CN219345579U - Decompression type oxygen cylinder valve assembly - Google Patents

Abstract

The utility model discloses a pressure-reducing oxygen cylinder valve assembly, which comprises a valve core assembly, an inflation valve assembly, a valve body, a mandrel, an upper cover shell, a switch turning block, a spring seat and a pressure gauge, wherein pipelines are integrally formed on the front side of the outer wall of the valve body, a plug is arranged in the lower pipeline, transverse pipes are integrally formed on the outer wall of the valve body in a bilateral symmetry mode, the two transverse pipes are respectively provided with the pressure gauge and the inflation valve assembly, cavities are respectively formed at the upper end and the lower end of the valve body, a communication hole is formed between the lower cavity and the transverse pipe for installing the pressure gauge, two-stage stepped grooves are formed in the upper cavity, and the upper cover shell is assembled in the upper stepped grooves in the upper cavity.

Description

Decompression type oxygen cylinder valve assembly

Technical Field

The utility model belongs to the technical field of oxygen cylinder assemblies, and particularly provides a pressure-reducing oxygen cylinder valve assembly.

Background

The decompression type oxygen cylinder component is an important component of the oxygen equipment of the ejection seat and is used as an inflation air source of the oxygen equipment for emergency inflation when the seat works, and the function of the decompression type oxygen cylinder component needs to be capable of safely storing high-pressure oxygen of 21 Mpa. The valve component is used for carrying out inflation and deflation work on the oxygen cylinder. Because of the specific application of the oxygen bottle, the valve assembly is required to be capable of carrying out the inflation and deflation work with stable output pressure and flow, and can effectively carry out the repeated inflation and deflation work for a plurality of times. It is desirable to design a pressure reducing oxygen cylinder valve assembly.

Disclosure of Invention

In order to solve the problems, the utility model provides a pressure-reducing oxygen cylinder valve assembly.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a decompression formula oxygen cylinder valve subassembly, includes case subassembly, inflation valve subassembly, valve body, dabber, upper cover casing, switch turn over piece, spring holder and manometer, respectively integrated into one piece has the pipeline about the outer wall front side of valve body, the downside the inside of pipeline is equipped with the end cap, the outer wall bilateral symmetry integrated into one piece of valve body has horizontal pipe, two horizontal pipe is equipped with manometer and inflation valve subassembly respectively, the cavity has all been seted up at the upper and lower both ends of valve body, the downside the communication hole has been seted up between the horizontal pipe of cavity and installation manometer, the upside two-stage ladder groove has been seted up in the cavity, the upper cover casing assemble in the upside ladder inslot in the cavity.

The lower half of dabber is the cylinder pole, and the upper half is the circular cone piece, and leaves the space between the inner wall of circular cone piece and upside cavity, the upside the inside lower extreme of cavity is equipped with the off-load ring, and the lower extreme grafting of dabber is assembled in the off-load ring, the upper end of off-load ring is equipped with the dabber spring holder, be equipped with the dabber spring between the upper surface of dabber spring holder and the circular cone piece lower surface of dabber, and the dabber spring is in compression state all the time, the case subassembly is assembled in the upside in the downside ladder inslot of cavity, the integrated into one piece of circular cone piece upper end of dabber has the inserted bar of grafting in the case subassembly inside, the upside the inboard ladder inslot spiro union of cavity has the dabber gland nut that is used for compressing tightly the case subassembly, the middle part through-hole of dabber gland nut is equipped with the ejector pin, the upper wall of upper cover casing is equipped with the locating cap, the upper end of spring holder runs through the locating cap, and the switch turns over the piece and is equipped with the upper end in the spring holder through the round pin, the surface outer end of round pin is equipped with the cotter, between locating cap and rectangle spring holder, rectangle spring holder and rectangle spring holder are in extension state all the time.

The distance between the pin shaft and the lower surface and the side surface of the switch turning block are different.

Further, the valve core assembly comprises a sealing guide sleeve and an ejector rod guide sleeve, a groove for assembling the sealing guide sleeve is formed in the lower surface of the ejector rod guide sleeve, a cylinder protrusion inserted into a middle through hole of a mandrel compression nut is integrally formed in the upper surface of the ejector rod guide sleeve, an inner hole of the ejector rod guide sleeve is in a countersunk hole shape with a narrow upper part and a wide lower part, a plug rod at the upper end of a mandrel conical block and the lower end of the ejector rod are inserted into the ejector rod guide sleeve, an inclined hole is formed in the circumferential direction of the upper surface of the ejector rod guide sleeve, the diameter of the plug rod at the upper end of the mandrel conical block is smaller than the large diameter of the inner hole of the ejector rod guide sleeve, and a gap is reserved between the ejector rod guide sleeve and a cavity at the upper side of the valve body.

Further, an upper cover compression nut is screwed in the upper side stepped groove in the cavity at the upper side, and an annular plate positioned between the upper side stepped groove and the upper cover compression nut is integrally formed at the lower end of the outer surface of the upper cover shell.

Further, the upper side of the outer wall of the valve body is in threaded connection with a positioning screw, and the inner end of the positioning screw is inserted into the side wall of the annular plate of the upper cover shell.

Further, adjusting nuts are arranged on the upper side of the inner wall of the upper cover shell, flat head set screws with inner ends tightly pressed against the adjusting nuts are connected to the outer wall of the upper cover shell in a threaded mode, spring gaskets are arranged on the lower surface of the adjusting nuts, and the upper ends of the rectangular springs are attached to the spring gaskets.

Further, the inner wall of the cavity at the lower side is fixedly provided with a large filter screen through a large filter screen nut.

Further, a rubber diaphragm is assembled in the upper stepped groove of the cavity on the upper side, a diaphragm pressing sheet is assembled on the periphery of the upper surface of the rubber diaphragm, an annular groove is formed in the surface of the upper stepped groove of the cavity on the upper side, and an annular protrusion matched with the annular groove is integrally formed on the periphery of the lower surface of the rubber diaphragm.

Further, the inner surface of the unloading ring is provided with a mandrel retainer ring, and the outer surface of the spring seat, the inner surface and the outer surface of the unloading ring and the outer surface of the plug are all provided with O-shaped rings.

Further, a copper pad is arranged between the inflation valve assembly and the transverse tube.

The beneficial effects of using the utility model are as follows:

1. the utility model designs the structures of the valve body, the mandrel, the valve core component, the spring seat, the switch turning block and the like, effectively leads out high-pressure gas in the oxygen cylinder during deflation, and reduces the pressure to form low-pressure gas for release, so that the output pressure and flow are stable, the effect of quick and safe gas release is achieved, and in addition, safe and effective inflation work can be carried out.

2. The inflation and deflation work is controlled by the turning block of the turning switch, the turning pressure range is 19N-98N, and the operation is simple and labor-saving.

3. The valve component has high integral strength, can realize more than 5000 times of filling and deflating work, and ensures that the product is normally used in the use temperature range, wherein the use temperature range is between-55 ℃ and 70 ℃.

4. Through dabber retaining ring and O type circle isotructure, strengthened the inside sealed effect of valve assembly, effectively avoided gas leakage.

Drawings

Fig. 1 is a front cross-sectional view of the present utility model.

Fig. 2 is a left side view of the present utility model.

Fig. 3 is an enlarged view of a portion of fig. 1 in accordance with the present utility model.

Fig. 4 is a top view of the ejector pin guide sleeve of the present utility model.

Fig. 5 is an enlarged view of a portion b of fig. 1 in accordance with the present utility model.

Fig. 6 is a schematic perspective view of the valve body of the present utility model.

Fig. 7 is a schematic perspective view of the valve body of the present utility model.

The reference numerals include: 1. the valve core component, 101, the sealing guide sleeve, 102, the ejector rod guide sleeve, 2, the inflation valve component, 3, the valve body, 4, the unloading ring, 5, the mandrel, 6, the mandrel check ring, 7, the mandrel spring seat, 8, the mandrel spring, 9, the mandrel compression nut, 10, the upper cover shell, 11, the upper cover compression nut, 12, the adjusting nut, 13 and the spring gasket, 14, a positioning cover, 15, a switch turning block, 16, a pin shaft, 17, a spring seat, 18, a diaphragm pressing piece, 19, a rubber diaphragm, 20, an ejector rod, 21, a red copper pad, 22, a large filter screen, 23, a large filter screen nut, 24, a plug, 25, an O-shaped ring, 26, a flat head set screw, 27, a rectangular spring, 28, a cotter pin, 29 and a pressure gauge.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1 to 7, the pressure reducing oxygen cylinder valve assembly comprises a valve core assembly 1, an inflation valve assembly 2, a valve body 3, a mandrel 5, an upper cover shell 10, a switch turning block 15, a spring seat 17 and a pressure gauge 29, wherein pipelines are respectively integrally formed on the front side of the outer wall of the valve body 3, a plug 24 is arranged in the lower pipeline, transverse pipes are integrally formed on the outer wall of the valve body 3 in a bilateral symmetry mode, the two transverse pipes are respectively provided with the pressure gauge 29 and the inflation valve assembly 2, cavities are respectively formed at the upper end and the lower end of the valve body 3, a communication hole is formed between the lower cavity and the transverse pipe for installing the pressure gauge 29, two-stage ladder grooves are formed in the upper cavity, and the upper cover shell 10 is assembled in the upper ladder grooves in the upper cavity.

The small holes are formed in the upper side pipeline and the two transverse pipes, the upper side pipeline is communicated with the upper side cavity of the valve body 3, the upper side pipeline is communicated with the lower side stepped groove of the upper side cavity, and the two transverse pipes are communicated with the lower end of the upper side cavity.

In the using process of the pressure-reducing oxygen bottle valve assembly, the lower side cavity of the valve body 3 is assembled to the mouth of the oxygen bottle. When in deflation, the overturning switch overturning block 15 opens the oxygen bottle valve assembly, gas in the oxygen bottle enters the lower side cavity of the valve body 3 and then reaches the transverse pipe provided with the pressure gauge 29 through the communication hole, and the gas is discharged after reaching the upper side pipeline through the upper side cavity; when in inflation, the overturning switch overturning block 15 closes the oxygen cylinder valve assembly, then the oxygen cylinder valve assembly 2 is inflated, and gas flows to the transverse pipe provided with the pressure gauge 29 after passing through the upper side cavity of the valve body 3, then reaches the lower side cavity through the communication hole, and finally enters the oxygen cylinder.

In the deflation process, the high-pressure gas in the oxygen cylinder reaches the transverse pipe and the upper cavity, can be depressurized due to the increase of the space, and finally is output as low-pressure gas after passing through the valve assembly, so that the effect of depressurization type deflation is realized, and the deflation work of the oxygen cylinder is safer.

The lower cavity is connected with an oxygen bottle and is a high-pressure cavity; the upper cavity is a decompression cavity.

When the input oxygen pressure of the high-pressure cavity is 5MPa and 21MPa and the output flow is 100L/min, the output pressure range is between 0.40MPa and 0.65 MPa.

When the pressure of the high-pressure cavity is 21MPa, no matter whether the oxygenation connector plug cap is installed or not, the high-pressure cavity is airtight; when the pressure of the high-pressure cavity is 21MPa, the pressure reducing cavity is airtight when the oxygen bottle equipment is not in on-state work and is in on-state work.

As shown in fig. 1, the lower half part of the mandrel 5 is a cylindrical rod, the upper half part is a conical block, a gap is reserved between the conical block and the inner wall of the upper cavity, an unloading ring 4 is assembled at the lower end of the inner part of the upper cavity, the lower end of the mandrel 5 is assembled in the unloading ring 4 in a plugging manner, a mandrel spring seat 7 is assembled at the upper end of the unloading ring 4, a mandrel spring 8 is assembled between the upper surface of the mandrel spring seat 7 and the lower surface of the conical block of the mandrel 5, the valve core assembly 1 is assembled in a lower stepped groove in the upper cavity, a mandrel compression nut 9 for compressing the valve core assembly 1 is integrally formed at the upper end of the conical block of the mandrel 5, a mandrel push rod 20 is assembled in the lower stepped groove of the upper cavity in a threaded manner, a positioning cover 14 is assembled at the upper wall of the upper cover housing 10 in a penetrating manner, a positioning cover 14 penetrates through the upper end of the spring seat 17, a switch flip 15 is assembled at the upper end of the spring seat 17 through a pin 16, a cotter pin 28 is assembled at the outer end of the outer surface of the pin 16, and a rectangular spring 27 is assembled between the positioning cover 14 and 17.

The valve core component 1 is matched with a conical block at the upper end of the mandrel 5, so that the communication and the sealing between the upper side pipeline and the transverse pipe are realized.

The mandrel compression nut 9 is used for fixing the position of the valve core assembly 1, and guaranteeing the sealing between the valve core assembly 1 and the inner lower surface of the lower stepped groove and guaranteeing that gas can only pass through the inner hole of the valve core assembly 1.

Both spindle spring 8 and rectangular spring 27 are always in compression.

As shown in fig. 1, the distance between the pin 16 and the lower surface and side surface of the switch block 15 is different.

The length of the pin 16 from the lower surface of the switch turning block 15 is smaller than the length of the pin from the right surface of the switch turning block 15, so that the position of the spring seat 17 in the upper cover housing 10 is changed after the switch turning block 15 is turned along the pin 16.

The turning pressure range of the switch turning block 15 is 19N-98N, and the operation is simple and labor-saving.

Specifically, as shown in fig. 1 and 3, the valve core assembly 1 comprises a sealing guide sleeve 101 and a push rod guide sleeve 102, a groove for assembling the sealing guide sleeve 101 is formed in the lower surface of the push rod guide sleeve 102, a cylinder protrusion inserted into a middle through hole of the mandrel compression nut 9 is integrally formed in the upper surface of the push rod guide sleeve 102, an inner hole of the push rod guide sleeve 102 is in a countersunk hole shape with a narrow upper part and a wide lower part, an inserted rod at the upper end of a conical block of the mandrel 5 and the lower end of the push rod 20 are inserted into the push rod guide sleeve 102, an inclined hole is formed in the circumferential direction of the upper surface of the push rod guide sleeve 102, the diameter of the inserted rod at the upper end of the conical block of the mandrel 5 is smaller than the large diameter of the inner hole of the push rod guide sleeve 102, and a gap is reserved between the push rod guide sleeve 102 and a cavity at the upper side of the valve body 3.

During deflation, the switch turning block 15 is turned over, so that the lower surface of the switch turning block 15 is parallel to the upper surface of the positioning cover 14, at this time, under the action of the spring force of the rectangular spring 27, the spring seat 17 and the switch turning block 15 are driven to move downwards, the spring seat 17 drives the ejector rod 20 to move downwards, and then the mandrel 5 is driven to move downwards, so that the conical block of the mandrel 5 is separated from the sealing guide sleeve 101, gas can flow into the inner hole of the sealing guide sleeve 101, then flows through the inner hole and the inclined hole of the ejector rod guide sleeve 102, enters into the lower step groove of the upper cavity, and finally flows out of the upper pipeline.

When the oxygen cylinder is inflated, the switch turning block 15 is reversed, the right surface of the switch turning block 15 is parallel to the upper surface of the positioning cover 14, so that the spring seat 17 is driven to do upward movement of the compression rectangular spring 27, the spring seat 17 does not have pressure on the ejector rod 20, the ejector rod 20 moves upward under the action of the spring force of the mandrel spring 8, the conical block of the mandrel 5 is tightly attached to the inner hole of the sealing guide sleeve 101, sealing is achieved, and then gas is inflated through the inflation valve assembly 2, and finally flows into the oxygen cylinder.

Specifically, as shown in fig. 1, an upper cover compression nut 11 is screwed in an upper step groove in the upper cavity, and an annular plate located between the upper step groove and the upper cover compression nut 11 is integrally formed at the lower end of the outer surface of the upper cover shell 10, so that the upper cover shell 10 is fixed in a rotating manner.

Specifically, as shown in fig. 1, a set screw is screwed to the upper side of the outer wall of the valve body 3, and the inner end of the set screw is inserted into the annular plate side wall of the upper cover case 10, thereby further fixing the position of the upper cover case 10 and preventing the upper cover case 10 from deflecting.

Specifically, as shown in fig. 1, an adjusting nut 12 is mounted on the upper side of the inner wall of the upper cover case 10, a flat head set screw 26 whose inner end is pressed against the adjusting nut 12 is screwed to the outer wall of the upper cover case 10, a spring washer 13 is mounted on the lower surface of the adjusting nut 12, and the upper end of a rectangular spring 27 is fitted to the spring washer 13.

The compression degree of the rectangular spring 27 can be adjusted by the adjusting nut 12, so that when the air is discharged, the spring force generated by the rectangular spring 27 is larger than the spring force generated by the mandrel spring 8, and the spring seat 17, the ejector rod 20 and the mandrel 5 are integrally moved downwards.

Specifically, as shown in fig. 1, the inner wall of the lower cavity is fixedly provided with a large filter screen 22 through a large filter screen nut 23, so that the gas filtering effect is achieved, and the gas filtering device is convenient to replace.

Specifically, as shown in fig. 1 and 5, a rubber diaphragm 19 is assembled in the upper stepped groove of the upper cavity, a diaphragm pressing piece 18 is assembled on the periphery of the upper surface of the rubber diaphragm 19, an annular groove is formed in the surface of the upper stepped groove of the upper cavity, and an annular protrusion matched with the annular groove is integrally formed on the periphery of the lower surface of the rubber diaphragm 19.

The rubber diaphragm 19 is arranged, so that gas leakage from the upper side can be effectively avoided, and the annular groove and the annular bulge are arranged, so that the firmness and the tightness of the installation of the rubber diaphragm 19 are improved.

Specifically, as shown in fig. 1 and 2, the inner surface of the unloading ring 4 is provided with a mandrel retainer ring 6, the outer surface of the spring seat 17, the inner and outer surfaces of the unloading ring 4 and the outer surface of the plug 24 are provided with O-rings 25, so that the tightness is improved, and gas leakage is avoided.

Specifically, as shown in fig. 1, a copper pad 21 is arranged between the inflation valve assembly 2 and the transverse tube.

The foregoing is merely exemplary of the present utility model, and many variations may be made in the specific embodiments and application scope of the utility model by those skilled in the art based on the spirit of the utility model, as long as the variations do not depart from the gist of the utility model.

Claims (9)

1. Decompression formula oxygen cylinder valve assembly, its characterized in that: the valve comprises a valve core assembly (1), an inflation valve assembly (2), a valve body (3), a mandrel (5), an upper cover shell (10), a switch turning block (15), a spring seat (17) and a pressure gauge (29), wherein pipelines are integrally formed on the front side of the outer wall of the valve body (3), plugs (24) are assembled in the pipelines at the lower side, transverse pipes are integrally formed on the outer wall of the valve body (3) in a bilateral symmetry mode, the two transverse pipes are respectively provided with the pressure gauge (29) and the inflation valve assembly (2), cavities are formed at the upper end and the lower end of the valve body (3), communication holes are formed between the cavities and the transverse pipes for installing the pressure gauge (29), two-stage ladder grooves are formed in the cavities at the upper side, and the upper cover shell (10) is assembled in the ladder grooves at the upper side in the cavities at the upper side.

The lower half part of the mandrel (5) is a cylindrical rod, the upper half part is a conical block, a gap is reserved between the conical block and the inner wall of the upper cavity, an unloading ring (4) is assembled at the lower end of the inner part of the cavity, the lower end of the mandrel (5) is assembled in the unloading ring (4) in a plugging manner, a mandrel spring seat (7) is assembled at the upper end of the unloading ring (4), a mandrel spring (8) is assembled between the upper surface of the mandrel spring seat (7) and the lower surface of the conical block of the mandrel (5), the mandrel spring (8) is always in a compressed state, the valve core assembly (1) is assembled in a lower stepped groove at the upper side in the cavity, a plug rod is integrally formed at the upper end of the conical block of the mandrel (5) and is inserted in the valve core assembly (1), a mandrel compression nut (9) for compressing the valve core assembly (1) is in the lower stepped groove in a plugging manner, a mandrel spring seat (20) is assembled in a middle through hole of the mandrel compression nut (9), a positioning pin (16) is assembled at the upper end of the upper cover housing (10), a positioning pin (16) is assembled at the outer surface of the positioning pin (16), a rectangular spring (27) is arranged between the positioning cover (14) and the spring seat (17), and the rectangular spring (27) is always in a stretching state;

the distance between the pin shaft (16) and the lower surface and the side surface of the switch turning block (15) are different.

2. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: the valve core assembly (1) comprises a sealing guide sleeve (101) and an ejector rod guide sleeve (102), a groove for assembling the sealing guide sleeve (101) is formed in the lower surface of the ejector rod guide sleeve (102), a cylinder protrusion inserted into a middle through hole of a mandrel compression nut (9) is integrally formed in the upper surface of the ejector rod guide sleeve (102), an inner hole of the ejector rod guide sleeve (102) is in a countersunk hole shape with a narrow upper part and a wide lower part, an inserting rod at the upper end of a conical block of a mandrel (5) and the lower end of an ejector rod (20) are inserted into the ejector rod guide sleeve (102), an inclined hole is formed in the circumferential direction of the upper surface of the ejector rod guide sleeve (102), the diameter of the inserting rod at the upper end of the conical block of the mandrel (5) is smaller than the large diameter of the inner hole of the ejector rod guide sleeve (102), and a gap is reserved between the ejector rod guide sleeve (102) and a cavity at the upper side of the valve body (3).

3. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: an upper cover compression nut (11) is connected in the upper stepped groove in the cavity in a threaded manner, and an annular plate positioned between the upper stepped groove and the upper cover compression nut (11) is integrally formed at the lower end of the outer surface of the upper cover shell (10).

4. A reduced pressure oxygen cylinder valve assembly according to claim 3, wherein: the upper side of the outer wall of the valve body (3) is in threaded connection with a positioning screw, and the inner end of the positioning screw is inserted into the side wall of the annular plate of the upper cover shell (10).

5. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: the upper cover is characterized in that an adjusting nut (12) is arranged on the upper side of the inner wall of the upper cover shell (10), the outer wall of the upper cover shell (10) is in threaded connection with a flat head set screw (26) with the inner end tightly pressed against the adjusting nut (12), a spring gasket (13) is arranged on the lower surface of the adjusting nut (12), and the upper end of a rectangular spring (27) is attached to the spring gasket (13).

6. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: the inner wall of the cavity at the lower side is fixedly provided with a large filter screen (22) through a large filter screen nut (23).

7. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: the upper side ladder groove of cavity is assembled with rubber diaphragm (19), and the upper surface periphery of rubber diaphragm (19) is assembled with diaphragm preforming (18), and the upside the annular groove has been seted up to the upper side ladder groove surface of cavity, the lower surface periphery one-tenth of rubber diaphragm (19) has with annular groove assorted annular bulge.

8. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: the inner surface of the unloading ring (4) is provided with a mandrel retainer ring (6), and the outer surface of the spring seat (17), the inner surface and the outer surface of the unloading ring (4) and the outer surface of the plug (24) are provided with O-shaped rings (25).

9. The reduced pressure oxygen cylinder valve assembly of claim 1, wherein: a copper pad (21) is arranged between the inflation valve assembly (2) and the transverse tube.

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