KR100921666B1 - Apparatus for Automatic Gas Shut-off and LPG Container Valve Assembly Having Function of Intercepting Gas Automatically Using the Same - Google Patents

Abstract

The present invention is to improve the structure of the gas flow path and the car shutoff device to minimize the charging resistance of the LPG gas during charging to smooth the flow of LPG gas to significantly shorten the charging time and the blocking function LPG using the same A valve assembly for a container.

The present invention provides a valve assembly for a shut-off type LPG container including a body having a flow path formed therein, a container fastening portion, and a filling portion having a built-in cut-off device, wherein the cut-off device is inserted into an inner circumferential surface of the filling part and protrudes inwardly at one end. Check body is formed support jaw; A return spring coupled to the inner circumferential surface of the check body; A check valve inserted into the check body to prevent separation and being inserted in a direction in which the support jaw is formed and elastically supported by the return spring in a tubular shape and including at least one gas flow hole; And a check sheet fixedly coupled to one end of the check valve, elastically supported by the return spring, and one side of the check valve being in close contact with the supporting jaw of the check body to block the gas.

Shut-off function, valve assembly for LPG container, check body, check seat, check valve, filling time

Description

Apparatus for Automatic Gas Shut-off and LPG Container Valve Assembly Having Function of Intercepting Gas Automatically Using the Same}

The present invention relates to an automobile shut-off device and a valve assembly for a shut-off type LPG container using the same. More particularly, the flow of LPG is smoothly improved by improving the structure of the gas flow path and the shut-off device so that the charging resistance of the LPG is minimized during charging. It relates to a vehicle shut-off device that can significantly shorten the charging time and the valve assembly for the shut-off type LPG container using the same.

In general, LPG container (1) in which LPG is stored is used a lot in businesses such as homes or restaurants, as shown in Figure 1, LPG container (1) valve assembly (9) is coupled to the upper end of the LPG container (1) On one side of the filling part 4 formed in the valve assembly 9 for the LPG container, one end is connected to a hose connected to a gas device (not shown) such as a gas range, and the other end is fitted to the filling part 4 so that the LPG container ( The pressure regulator 60 for adjusting the pressure and the amount of LPG supplied to the gas equipment from 1) is combined.

At this time, the pressure regulator 60 is fitted to the charging portion 4, the shaft portion 62 of the handle 63 is rotatably installed on the outer circumferential surface of the fastening portion 61 with a sealing member such as rubber packing at the tip. According to the valve assembly (9) for LPG container.

The valve assembly 9 for the LPG container has a filling part 4 protruding from one outer circumferential surface of the body 6 having a space for forming a flow path therein, and an LPG safety discharge part on the other side of the body 6. (3) is protruding, the container fastening portion (5) is inserted into the valve coupling hole (1a) formed on the upper end of the LPG container (1) at the lower end of the body (6) protruding, the body (9) The handle 2 for opening and closing the flow path between the charging section 4 and the container fastening section 5 is rotatably mounted left and right at the upper end.

On the other hand, when all the LPG stored in the LPG container (1) is exhausted, when replacing the LPG container (1) with a new one, first turn the handle (2) to lock the valve assembly (9) for LPG container to fasten the container (4) After closing the flow path between the sections (5), the pressure regulator (60) connected to the charging section (4) of the LPG container valve assembly (9), and then the new LPG container (1) and the valve for LPG container Reassemble the assembly (9) and the pressure regulator (60), then turn the handle (2) to open the valve assembly (9) for the LPG container, open the flow path between the filling section (4) and the container fastening section (5), and replace it with a new one. LPG is supplied from a LPG vessel to a gas appliance such as a gas range via a valve assembly 9 for LPG vessel, a pressure regulator 60 and a hose.

However, the LPG container valve assembly must repeat the handle opening and closing operation for gas filling, and the pressure regulator is separated from the live part without the operator accidentally turning the handle to lock the LPG container valve assembly while replacing the LPG container. In this case, since the flow path between the filling part and the container fastening part is kept open, the LPG remaining inside the LPG container leaks to the outside, causing a large gas explosion accident, and even if the LPG container 1 is not replaced. LPG container (1), even when separated from the pressure regulator (60) by turning the handle (11) to open the LPG container valve assembly (10) simply because the internal LPG leaks to the outside, accidents due to deliberate LPG leakage There is also a problem that may occur.

Thus, to solve the above problems, as shown in Figure 2, even if the handle operation for closing the valve is not separate, if the pressure regulator is separated from the LPG container to automatically close the flow path inside the valve assembly body for LPG container A valve assembly for an LPG container with a built-in shutoff device is disclosed in Korean Patent No. 634489.

Referring to FIGS. 2 and 3, a conventional shutoff type LPG container valve assembly will be described. A conventional shutoff type LPG container valve assembly 10 includes a body having a space for forming a flow path 12 therein. 20, the body 20 to cover the first charging part 41 while having an inner diameter larger than the outer diameter of the first charging part 41 and the first charging part 41 protruding from one side outer circumferential surface of the body 20. It has an inner diameter larger than the outer diameter of the first safety discharge portion 31 and the first safety discharge portion 31 protruding from the outer peripheral surface of the second charging portion 42, the body 20, protruding from one outer peripheral surface of the The second safety discharge portion 30 protruding from the other outer peripheral surface of the body 20 to cover the first safety discharge portion 31, the handle 11 for opening and closing the flow path 12, and the pressure regulator 60 When separated, it is automatically connected to the LPG container (1) in the second charging section 42 to block the LPG passage inside the body 20 to the outside of the LPG container (1) Rain shut off device 70 is included.

The shut-off device 70 has a spring 83, a locking jaw 91 is formed on one side of the inner circumferential surface, and is inserted into the second charging part 42 so that the connecting pipe 61 of the pressure regulator 60 is the second charging part. When fitted to the (42) is pushed toward the body 20 while pressing the spring 83, and when the connecting pipe 61 is separated from the second charging portion 42 by the repulsive force of the spring 83 to the outside of the body 20 The sealing member 81 is attached to the guide 90 which is pushed out and the head caught by the locking jaw 91, and a plurality of through holes 82 (see FIG. 4) are formed on the outer circumferential surface thereof. LPG along the guide 90 which is inserted and the head is caught by the locking jaw 91 and is inserted into the first charging part 41 and slides toward the body 20 and the body 20 from the second charging part 42. It consists of a retainer 80 to supply or block.

However, the conventional shut-off valve assembly for LPG container 10 is a structure that forms the flow path 12 while pushing the guide 90 in a state where the valve retainer 80 is fixed during filling as shown in FIG. As the charging is performed while the charging interference occurs by the retainer 80 during the charging, the charging time required to charge is more than the charging time of the existing filling valve.

In addition, since the assembling of the valve retainer 80 is determined by the assemblability of the guide 90, the valve assembly 10 for the conventional shut-off type LPG container may include the assembly portion of the valve body 20 and the guide 90 during processing. If the processing precision is not guaranteed, the guide 90 and the retainer 80 independent of each other are assembled, resulting in an assembly structure in which eccentricity occurs, which may cause a problem in airtightness.

Furthermore, the conventional shut-off valve assembly 10 for LPG container has a structure in which the gas flow passage 12 is directly formed in the valve retainer 80 so as to secure the tightening force by screwing the valve body 20 in use. It is a structure that can loosen and lose its function as a shut-off valve.

In addition, the valve assembly 10 for the conventional shut-off type LPG container has a structure in which the outer diameter of the valve guide 90 and the inner diameter of the connection pipe 61 are closely adhered to each other to maintain the airtightness. It is a structure that can cause a malfunction due to the phenomenon occurs.

In addition, since the valve assembly 10 for the conventional shut-off type LPG container is operated depending on the O-ring 71 for hermetic holding during filling, the operating load of the guide 90 is applied to the O-ring 71. As it is delivered as it is a structure that can shorten the life of the O-ring (71).

In addition, the conventional shut-off valve assembly for LPG container 10 is formed with a retainer O-ring contact sheet inside the valve guide 90 can be easily adhered to the retainer O-ring when mixed.

In addition, the valve assembly 10 for the conventional shut-off type LPG container is a natural separation of the valve guide 90 and the retainer 80 separated by the weakening of durability during use when the clamping force of the valve guide 90 cannot be corrected. It can be a structure.

Accordingly, the present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to improve the structure of the gas flow path and the auto shutoff device so that the charging resistance of the LPG is minimized during the charging, thereby smoothing the flow of the LPG, thereby improving the charging time. The present invention provides an automobile shut-off device that can be greatly shortened and a valve assembly for a shut-off LPG container using the same.

In addition, the present invention is because the check valve is coupled to the check body while being elastically supported through a return spring is formed as a separate component from the valve assembly for LPG container can further secure airtightness and may occur during assembly An object of the present invention is to provide an automobile shut-off device capable of completely eliminating eccentricity and a valve assembly for an LPG container using the same.

In addition, the present invention is a check body O-ring is a structure that only the airtightness is secured in the state in which the shut-off device is assembled can improve the durability by reducing the wear than the structure that requires the existing operation at the same time, and also made by injection injection The injection packing of the seat is to provide an improved valve assembly for LPG containers with a structure that can prevent the escape during gas filling.

In addition, the present invention is because the check valve is operated inside the check body is less influenced by external shocks can induce a stable operation of the check valve, the check seat portion is installed outside the check body is the foreign matter inside the cylinder seat portion An object of the present invention is to provide a valve assembly for an LPG container that is not easily adhered to the structure.

In addition, the present invention forms a spring guide inside the check body, so that the check valve O-ring, the spring, the check body O-ring is operated in a completely separate space can improve the airtightness of the check valve and can lead to a stable operation of the return spring The purpose is to provide a valve assembly for LPG containers.

In order to achieve the above object, the present invention is a vehicle shut-off device which is built in the gas filling / discharging portion of the gas container valve assembly to automatically block the flow path formed inside the body, the outer peripheral portion of the tubular filling / discharge A check body coupled to an inner circumferential surface of the part, the inner circumferential portion of the inner circumference gradually decreasing toward the inner side, and a supporting jaw bent in the center direction at the inner end; A return spring coupled to the inner circumferential surface of the check body; The inner end is inserted in a tubular shape so as to be disposed at a minute interval at the inner circumference of the support jaw of the check body, and in the normal state, the inner end is elastically supported by the return spring to maintain airtightness with the check body. A check valve slidably moved along the inner circumferential surface of the check body such that gas is introduced into the flow path of the body through at least one gas flow hole formed on an outer circumferential surface of the end portion; And a check sheet which is fixedly coupled to the inner end of the check valve and checks the outer surface to be in close contact with the supporting jaw of the check body to block gas flow when in a normal state. It includes a valve assembly.

Here, the check body has a spring guide of a predetermined width with a spring insertion groove into which the return spring is inserted, so that the outer circumferential surface of the check valve is in close contact with the inner circumferential side of the spring guide.

In addition, a packing may be coupled to the check seat for airtightness with the fixing seat of the check valve and the support jaw of the check body.

In this case, the check valve and the check seat may be a riveting fixed coupling, a screw fastening coupling or a bonding coupling. However, the check valve and the check seat may be fixed by any method.

On the other hand, the check valve may be formed with at least one check valve O-ring for maintaining the air tightness with the check body, the check valve O-ring may be in contact with the spring guide of the check body.

In addition, a check body O-ring may be formed between the charging unit and the check body to maintain airtightness.

The shut-off device according to the present invention made as described above and the shut-off valve assembly for the LPG container using the same provide the following effects.

First, by improving the structure to maximize the efficiency of the flow path by minimizing the charging resistance and widening the passage of the gas flow path, it is possible to significantly shorten the charging time because the LPG gas flows smoothly during charging.

Second, while the conventional check valve and check body are screwed together, the check valve is a component that is separate from the LPG container valve assembly because the check valve is coupled to the check body by being elastically supported through a return spring. It can be formed to ensure more airtightness and can completely eliminate the eccentricity that may occur during assembly.

Third, because the check valve moves while the check body is fixed to the valve body during filling, the durability of the check body can be reduced by reducing the wear of the check body O-ring.In addition, the injection packing of the check sheet is manufactured by injection injection. It is a structure that can prevent.

Fourth, since the check valve is operated inside the check body is less influenced by external impact can ensure the operation of the check valve.

Fifth, the check body part O-ring is a structure that only the airtightness is secured in the state that the shut-off device is assembled, it is more efficient in maintaining the airtight than the structure that requires the existing operation at the same time.

Sixth, the check sheet portion is installed outside the check body so that foreign matters in the cylinder are not easily adhered to the sheet portion.

Seventh, the operation part of the check valve O-ring operated by the check body O-ring and the return spring can induce a stable operation with each independent structure.

Eighth, the structure of the independent integrated shut-off device is designed to be the shortest length, can operate in the minimum assembly space, and can maintain the airtightness without using the strong force of the spring.

Ninth, check valve O-rings, springs, and check-body O-rings operate in completely separate spaces by forming a spring guide inside the check body, thereby improving the airtightness of the check valve and ensuring the operation of the spring.

Tenth, the check body and the check valve are not riveted easily by the riveted by the check seat, so that the role of the auto disconnect device is not lost unless the check body is completely detached from the valve inlet.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

5 is an exploded perspective view showing a shut-off type LPG container valve assembly according to the present invention, Figure 6 is a cross-sectional view showing the LPG container valve assembly shown in Figure 5, Figure 7 is a LPG container shown in Figure 6 An enlarged cross-sectional view showing an enlargement of the shutoff function in the valve assembly.

FIG. 8 is a cross-sectional view illustrating a gas flow in a state in which a check valve is opened in the valve assembly for LPG container shown in FIG. 7, and FIG. 9 is an O-ring support for sealing the check valve in the valve assembly for LPG container shown in FIG. 7. It is sectional drawing which shows another Example of a structure.

First, the description of the present invention focuses on the operation of filling the gas, but when the pressure regulator is connected to the charging unit, the charging unit serves as an outlet for discharging the gas.

First, referring to FIG. 5, the LPG container valve assembly 100 according to the present invention automatically shuts off and opens the flow passage 12 (see FIG. 6) according to the connection of the charging adapter without a separate handle 11. As the valve assembly 100 for the shut-off type LPG container that can be, because the structure is improved to minimize the charging resistance of the LPG during charging and to maximize the efficiency of the gas flow path, the charging time can be significantly shortened.

In detail, the shutoff type LPG container valve assembly 100 includes a body 110, a container fastening portion 50 formed at a lower side of the body 110, and a filling portion 120 formed at both sides of the body 110. ), The LPG safety discharge unit 30, and rotatably coupled to the upper portion of the body 110, as the user rotates the flow path 12 between the container fastening portion 50 and the charging unit 120 It includes a handle 11 for opening and closing.

The body 110 has a flow passage 12 formed therein, and a container fastening portion 50 is formed at the lower side of the body 110 to engage with the valve coupling hole 1a formed at the upper end of the LPG container 1. Is formed, protruding to one side of the body 110 and the charging unit 120 is built in the interior cut-off device 200, and the LPG safety discharge portion 30 is formed to protrude to the other side of the body (110). .

Here, the shut-off device 200 according to the present invention is inserted into the inner peripheral surface of the charging unit 120 to automatically open and block the flow path inside the body in accordance with the connection of the charging adapter, check body 210 and the check body The check valve 220 is inserted into the inner circumferential surface of the 210, and coupled to the check body 210 and elastically supports the check valve 220, so as to return to the original position after the pressure movement of the check valve 220 during charging It includes a return spring 250 for providing a restoring force, and a check seat 230 is fixedly coupled to the end of the check valve 220.

The check body 210 has a tubular outer circumference portion screwed to the inner circumferential surface of the charging unit 120, the through hole formed in the inner circumference gradually widens gradually toward the inlet (A) to which the charging adapter (not shown) is coupled At the end, a support jaw 211 protrudes vertically in the center width is formed.

Here, the check body 210 is coupled in the form of screwing the charging unit 120 in the present invention, it is also possible to fasten through a stop ring (stop ring).

Here, the support jaw 211 of the check body 210 in the inward direction so that the gas flows smoothly along the gas flow hole 221 of the check valve 220 to the internal space 50a (see FIG. 7) during gas filling. An arc-shaped groove 211a is formed.

The spring guide 212 protrudes from the inner circumferential surface of the check body 210 to form a spring insertion groove 251 into which the return spring 250 is inserted.

At this time, the spring insertion groove 251 is formed in an open shape toward the inlet (A) side of the check body 210, and thus the spring insertion groove 251 is returned in the direction in which the connector 61 of the charging adapter is coupled. Spring 250 is inserted.

In addition, a check body O-ring 215 is formed between the charging unit 120 and the check body 210 to maintain airtightness, and when the check body 210 is charged, the check valve 220 moves. Therefore, since the check body O-ring 215 does not actually move, wear resistance may be reduced, thereby improving durability.

According to the structure in which the spring guide 212 is formed in the check body 210, the shutoff type LPG container valve assembly 100 according to the present invention includes a check valve O-ring 225 and a return spring 250 which will be described later. Since the check body o-ring 215 is operated in a completely separate space, it is possible to improve the airtightness of the check valve 220 and ensure the operation of the return spring 250.

At this time, the check body O-ring 215 is more efficient in maintaining the airtight than the structure that requires the existing operation at the same time as the structure only need to ensure the airtight because there is no movement in the assembled state of the shut-off device 200.

On the other hand, the check valve 220 is inserted into the inner peripheral surface of the check body 210 and the inner peripheral surface of the spring guide 212 in the inlet (A) direction.

The check valve 220 has a tubular shape in which the inlet side is sequentially widened corresponding to the internal structure of the check body 210 to increase the filling speed by increasing the flow rate when gas is filled, and the inner end of the check body The support jaw 211 of 210 is inserted in the formed direction, and the outer diameter of the inner end is set smaller than the inner diameter of the check body support jaw 211.

In addition, the seat fixing part 231 is vertically protruded to a predetermined length in the center direction at the inner end of the check valve 220, and the engaging portion 222 protruding toward the outer circumferential surface is formed at the inlet side of the check valve 220. It is formed to contact the return spring 250, so that the check valve 220 is elastically supported by the return spring (250).

At least one gas flow hole 221 is formed on an inner circumferential surface of the check valve 220, and the number and shape of the gas flow holes 221 may be set according to a condition.

In addition, the seat fixing part 231 of the check valve 220 is elastically supported by the return spring 250 when it is in a normal state, and is in close contact with the support jaw 211 of the check body 210 to block the gas. The check body 210 and the check sheet 230 to maintain confidentiality are fixedly coupled.

Here, the check sheet 230 is coupled to the outside of the check body 210 has a structure in which foreign matters, etc. are not easily adhered to the sheet portion.

In addition, the check seat 230 has a plate-shaped packing 235 for hermetic contact with the seat fixing part 231 of the check valve 220 and the support jaw 211 of the check body 210 in plane. It is formed on the contact surface.

The packing 235 is manufactured by injection injection, and is coupled to prevent departure from the check sheet 230 during gas charging.

According to the structure described above, the check valve 220 is elastically supported by the return spring 250 as shown in FIG. 7 to maintain the air tightness with the check body 210 as shown in FIG. 7, and fills the LPG as shown in FIG. 8. When the connection port of the charging adapter is pressed on the other side of the inlet to move the check valve 220 inward, the gas flow hole 221 is moved to the inside of the body 110 to be opened to open the gas flow hole 221. Gas flows into the flow path 12 of the body 110.

As described above, the check valve 220 of the present invention is combined with the return spring 250 to the check body 210 and is formed as one accessory regardless of the valve, thereby ensuring airtightness and may occur when assembling parts. Eccentricity can be completely eliminated.

In addition, since the check valve 220 is operated inside the check body 210, the impact of the external shock may be less, thereby ensuring the operation of the check valve 220.

In addition, the check valve 220 is formed with at least one check valve O-ring 225 to maintain the air tightness with the check body 210.

At this time, the check valve O-ring 225 may be in contact with the spring guide 212 of the check body 210, in another embodiment is designed to contact the inner peripheral surface of the check body 210a as shown in FIG. can do.

In this case, when the O-ring 225a of the check valve 220a is designed to contact the inner circumferential surface of the check body 210a as shown in FIG. 9, the length of the engaging portion 222a of the check valve 220a is the check valve O-ring. Since the 225a is relatively long by the coupling, the length of the spring guide 212a may be shorter to secure the movement clearance of the check valve 220a.

On the other hand, the check seat 230 is fixed to one of the check valve (220, 220a) and riveting fixed coupling, screw fastening or bonding coupling method is not limited to this if the durability and airtightness of the coupling can be maintained.

Meanwhile, the check bodies 210 and 210a and the check valves 220 and 220a as described above are not easily disassembled by the check seat 230 fixedly coupled to the check valves 220 and 220a. The role of the shutoff device 200 is not lost unless the valve is completely removed from the filling port.

Therefore, the present invention is designed to be the shortest length in the structure of an independent integrated block device is capable of operating even in the minimum assembly space, it is a structure that can maintain the airtightness without using the strong force of the spring.

8 is a cross-sectional view showing the gas flow in the check valve 220 of the shut-off type LPG container valve assembly 100 according to the present invention, referring to the drawing, the connector of the charging adapter during gas charging When inserted into the charging unit 120 of the body 110, the check valve 220 is pressed accordingly to move in the direction of the body 110, thereby the gas flow hole 221 formed in the check valve 220 is The gas flows open as shown.

Looking at such a gas flow, first of all, the present invention improves the size and shape of the gas flow hole 221 of the check valve 220 to allow the gas to flow smoothly during gas filling, and maximizes the efficiency of the flow path by minimizing the filling resistance Overall, using the shut-off valve assembly 100 LPG container according to the present invention can greatly shorten the charging time.

On the other hand, the clearance of the movement of the check valve 220 is made according to the clearance distance between the one end of the spring guide 212 of the check body 210 and the engaging portion 22 of the check valve 220, in this design The length of the spring guide 212 can be changed in design according to the desired play.

Compared with the conventional LPG container valve assembly 10 through the retainer 80, the conventional valve assembly for LPG container 10 has a gas guide 90 and a sealing member. It passes through the 81 and flows into the retainer 80 through the through-hole 82 formed in the retainer 80, so the gas flow path is narrow and there are many elements that obstruct the flow, so the charging resistance is large and the charging time is large. In contrast, the present invention forms a flow path 12 of the filling part 120 in which the gas passing through the gas flow hole 221 of the check valve 220 does not have any element that can obstruct the flow of gas. As a structure that can flow directly into the internal space 50a (see FIG. 7), the gas flow path is wide and simple, thereby reducing the charging resistance and greatly shortening the charging time.

That is, the shut-off type LPG container valve assembly 100 according to the present invention further includes a check body 210 in the charging unit 120 to move the check valve 220 fixedly coupled to the check sheet 230 and to the gas. The gas flows through the gas flow hole 221 of the check valve 220 directly to the outlet to improve the structure so that the gas flows smoothly to minimize the charging resistance of the gas can greatly shorten the charging time.

In addition, the conventional LPG container valve assembly 10 has a structure in which the flow path flows into the retainer 80 through the through-hole 82 of the retainer 80, so that the flow path itself is large in the structure of the retainer 80. Restricted That is, the conventional shut-off valve assembly for LPG container 10 has a structural limit that cannot freely change the structure of the retainer 80 in the designated space in the filling part 40, so that the flow path and gas flow are further increased. While there is a problem that it is difficult to structurally improve to flow smoothly, the present invention has the advantage that the shape or size of the flow hole of the check valve can be changed according to the conditions.

In addition, the present invention is coupled to the check valve 220 is elastically supported through the return spring 250 to the check body 210 without fixing the check valve 220 and the check body 210 by screwing. Implemented in a structure that is formed as a separate component from the conventional LPG container valve assembly 10 can ensure more airtightness and can eliminate the eccentricity that may occur during assembly.

In addition, in the present invention, since the check valve 220 moves in a state where the check body 210 is fixed to the valve body 110 during charging, the check body O-ring 215 is a state in which the auto shutoff device 200 is assembled. It is a structure that only needs to ensure airtightness, so it has less wear than the structure that requires the existing operation at the same time, so it can improve durability and thus it is efficient in airtightness.

In addition, the present invention is a number of times for the gas flow path compared to the conventional sealing by only the sealing member 81 and the backup ring 71 by the check body O ring 215, the check valve O ring 225 and the packing 235 Since the structure is improved to achieve multiple sealing by going through the sealing step, the airtightness can be further secured. In addition, since the conventional backup ring 71 has a diagonal contact structure, the airtightness is repeated when the contact and detachment are repeated continuously. This can be bad.

1 is an exploded perspective view showing a conventional LPG container valve assembly coupled to the LPG container;

2 and 3 are a cross-sectional view of the LPG container valve assembly shown in Figure 1 and an enlarged cross-sectional view of an enlarged blocking function in the LPG container valve assembly,

4 is a cross-sectional view showing a gas flow in the LPG container valve assembly shown in FIG.

5 is an exploded perspective view showing a valve assembly for a shut-off LPG container according to the present invention;

Figure 6 is a cross-sectional view showing the valve assembly for the shut-off LPG container shown in Figure 5,

FIG. 7 is an enlarged cross-sectional view illustrating an enlarged blocking function part in a valve assembly for a blocking function LPG container shown in FIG. 6;

8 is a cross-sectional view showing the gas flow of the check valve is open in the valve assembly for LPG container shown in FIG.

9 is a cross-sectional view showing another embodiment of the O-ring support structure for sealing the check valve in the valve assembly for LPG container shown in FIG.

<Description of the symbols for the main parts of the drawings>

11 ... handle 30 ... LPG safety outlet

50 ... container connection 100 ... valve assembly for shut-off LPG container

110 ... body 120 ... live parts

200 ... shut-off 210,210a ... checkbody

211 ... Supporting jaw 212 ... Spring guide

215 ... check body O-ring 220 ... check valve

221 Gas flow hole 222,222a

225 ... check valve O-ring 230 ... check seat

235 ... packing 250 ... return spring

Claims (8)

In the automatic shut-off device which is embedded in the gas filling / discharge portion of the valve assembly for a gas container to automatically block the flow path formed inside the body, the automatic shut-off device, It is configured in a tubular shape, the outer peripheral portion is coupled to the inner circumferential surface of the filling / discharge portion, the inner circumference has a structure in which the inner diameter gradually decreases toward the inner side, the support end 211 is formed bent in the center direction at the inner end A check body 210 having a spring guide 212 protruding from the inner circumference of the inner circumference to form a spring insertion groove 251; A return spring 250 inserted into the spring insertion groove 251 formed on the inner circumferential surface of the check body 210; The gas flow hole 221 is formed in a tubular shape, the seat fixing portion 231 disposed on the inner circumferential portion of the support jaw 211 of the check body 210 and the outer circumferential surface of the upper portion of the seat fixing portion 231. In the normal state, it is elastically supported by the return spring 250 to close the gas flow hole 221 to maintain airtightness, and in the open state, press the return spring 250 inward to press the gas flow. A check valve 220 capable of sliding along the inner circumferential surface of the check body so that the hole 221 is opened to allow the gas to flow into the flow passage 12 of the body; It is coupled to the check valve 220 at a position corresponding to the spring guide 212, the sliding sliding contact with the corresponding surface of the spring guide 212 by the sliding movement of the check valve 220 A check valve O-ring 225 for moving and sealing between the check body 210 and the spring guide 212 to maintain airtightness; And  In the normal state, the support jaw 211 of the check body 210 is in close contact with the plane to block the flow of gas to maintain the airtight to the seat fixing portion 231 of the check valve 220 It has a plate-shaped packing 235 is provided on the contact surface, characterized in that it comprises a check sheet 230 which is coupled to the seat fixing portion 231 of the check valve 220 via the packing 235 Blocking device for valve assembly for shut-off type LPG container. delete delete The method of claim 1, The check valve and the check seat is an automatic shut-off device for a valve assembly valve assembly for a shut-off type LPG container, characterized in that coupled to any one selected from riveting fixed coupling, screw fastening or bonding coupling. The method of claim 1, The shut-off function of the shut-off type LPG container valve assembly auto shutoff device, characterized in that the sealing coupling between the outer circumferential surface of the check valve and the inner circumferential surface of the check body. The method of claim 1, The check valve is an automobile shut-off device for a valve assembly for valve type LPG container, characterized in that the inner diameter is sequentially reduced toward the inner side. The method of claim 1, The shut-off function of the shut-off type LPG container valve assembly for automobile assembly comprising a sealing coupling portion and a screw coupling portion between the inner circumferential surface of the gas filling portion and the outer circumferential surface of the check body. delete

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