An independent over-temperature shutoff and over-flow shutoff gas safety intake joint mechanism

Abstract

The present invention relates to an independent over-temperature shutoff and over-flow shutoff gas safety air intake joint mechanism, comprising a joint, the end of the joint being axially connected to an air intake joint and an air intake passage being axially arranged in the center thereof, the air intake joint being axially arranged with an air intake hole; a plugging piece being arranged in an inner cavity formed between the joint and the air intake joint; at least one positioning piece being embedded in the air intake joint fixed at the top of the inner cavity through extrusion of a plastic piece in contact with the plugging piece and being adsorbed with the plugging piece, a ventilation gap being left between the plugging piece and the top of the inner cavity or a ventilation groove being staggered with the air intake passage being arranged on the plugging piece. The present invention has the functions of over-flow shutoff and over-temperature shutoff at the same time, and can be independently applied to any gas intake safety mechanism, solving the disadvantage that the over-temperature and over-flow devices of the traditional mechanism are arranged separately.

Description

Technical Field

[0001] The invention relates to the field of gas joints, and in particular to an independent over-temperature shutoff and over-flow shutoff gas safety intake joint mechanism. Background Art

[0002] The air inlet joint is a component that is often used in the gas field. However, the mainstream joint structure on the market now matches the cylinder valve, and does not need a built-in safety shut-off structure, so it cannot produce the overheating shut-off effect. The overheating shut-off device in the traditional cylinder air inlet joint structure on the market must be matched with a North American specification gas cylinder valve, and it needs to be matched with a built-in safety shut-off valve to work. Therefore, the current air inlet joint can no longer meet the needs of safe use of gas, so a new type of joint mechanism is needed. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an independent over-temperature shutdown and over-flow shutdown gas safety intake joint mechanism, which has the functions of over-flow shutdown and over-temperature shutdown, and can be independently applied to any gas intake safety mechanism, thus solving the disadvantage that the over-temperature and over-flow devices of the traditional mechanism are set separately.

[0004] The technical solution adopted by the present invention to solve its technical problems is: to provide an independent over-temperature shutdown and over-flow shutdown gas safety intake joint mechanism, including a joint, the end of the joint is axially connected to the intake joint and an intake air duct is axially arranged in the center, and the intake joint is axially arranged with an intake hole; a sealing piece is arranged in the inner cavity formed between the joint and the intake joint; at least one positioning piece is extruded and embedded in the intake joint fixed at the top of the inner cavity through a plastic piece in contact with it and adsorbed with the sealing piece, a ventilation gap is left between the sealing piece and the top of the inner cavity, or a ventilation groove staggered with the intake air duct is arranged on the sealing piece.

[0005] Furthermore, an elastic member is provided at the upper end of the positioning member.

[0006] Furthermore, the blocking piece and the positioning piece are made of magnet or iron material, and the materials used for the two are different.

[0007] Furthermore, the positioning member is columnar and has at least two members evenly arranged around the air inlet.

[0008] Furthermore, the plastic part is in a cap shape and sleeved on the upper end of the positioning part.

[0009] Furthermore, the plastic part is sleeve-shaped and sleeved on the outer side of the positioning part.

[0010] Furthermore, the plastic part is annular and embedded in the lower end of the air inlet connector. There are at least three positioning parts, which are axially embedded in the plastic part. A ventilation groove is provided in the middle of the blocking piece.

[0011] Furthermore, the positioning piece is annular, the plastic piece is also annular, the positioning piece and the plastic piece are concentrically and closely arranged, and a ventilation groove is provided in the middle of the blocking piece.

[0012] Furthermore, a threaded connection portion connected to the inner wall of the air inlet connector is provided on the outer side wall of the connector end.

[0013] Furthermore, a protrusion higher than the end surface is provided at one end of the air inlet duct, and a conical hole is axially provided between one end of the air inlet hole and the inner cavity.

[0014] Beneficial effect: The present invention relates to an independent over-temperature shutoff and over-flow shutoff gas safety intake joint mechanism, which has the functions of over-flow shutoff and over-temperature shutoff, and can be independently applicable to any gas intake safety mechanism, solving the shortcomings of the traditional mechanism of separate over-temperature and over-flow devices, and further solving the traditional design that the over-temperature must be combined with a special cylinder valve to make the function effective. It can be used on any independent gas pipeline and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view half-section structure diagram of the first structure of the present invention;

[0016] Figure 2 yes Figure 1 A magnified structural diagram;

[0017] Figure 3 It is a schematic diagram of the structure of the superfluid off state of the present invention;

[0018] Figure 4 It is a schematic diagram of the structure of the over-temperature shutdown state of the present invention;

[0019] Figure 5 is a half-section schematic diagram of a second structure of the present invention;

[0020] Figure 6 is a half-section schematic diagram of a third structure of the present invention;

[0021] Figure 7 It is a partial structural stereogram of the third structure of the present invention;

[0022] Figure 8 It is a partial structural stereogram of the third structure of the present invention;

[0023] Fig. 9 is a half-section schematic diagram of a fourth structure of the present invention;

[0024] Fig.10 It is a partial structural stereogram of the fourth structure of the present invention.

[0025] Illustration: 1. Connector; 2. Air inlet connector; 3. Sealing piece; 4. Positioning piece; 5. Threaded connection; 6. Plastic sleeve; 7. Air inlet duct; 8. Air inlet hole; 9. Ventilation gap; 10. Inner cavity; 11. Conical hole; 12. Raised part; 13. Ventilation groove; 14. Elastic part. DETAILED DESCRIPTION

[0026] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the appended claims of the application equally.

[0027] like Figure 1-10 As shown, an embodiment of the present invention relates to an independent over-temperature shutoff and over-flow shutoff gas safety intake joint mechanism, comprising a joint 1, wherein the end of the joint 1 is axially connected to an intake joint 2 and an intake air duct 7 is axially arranged in the center thereof.

[0028] The air intake connector 2 is axially provided with an air intake hole 8, and the sealing piece 3 is arranged in the inner cavity 10 formed between the connector 1 and the air intake connector 2; the sealing piece 3 is arranged in the inner cavity 10 formed between the connector 1 and the air intake connector 2; at least one positioning piece 4 is extruded and embedded in the air intake connector 2 fixed at the top of the inner cavity 10 through a plastic piece 6 in contact with it and is adsorbed with the sealing piece 3, and a ventilation gap 9 is left between the sealing piece 3 and the top of the inner cavity 10, or a ventilation groove 13 staggered with the air intake duct 7 is arranged on the sealing piece 3.

[0029] The upper end of the positioning member 4 is provided with an elastic member 14, such as Figure 1-2 As shown, the elastic member 14 has a spring, and its two ends respectively support the positioning member 4 and the air inlet connector 2, giving the positioning member 4 a downward force so that the positioning member 4 can be quickly pushed out and shut off together with the blocking piece 3.

[0030] The blocking piece 3 and the positioning piece 4 are made of magnet or iron material and the materials used for the two are different. It is sufficient as long as the blocking piece 3 and the positioning piece 4 can be adsorbed to each other.

[0031] As an embodiment of the positioning member 4, the positioning member 4 is columnar and has at least two evenly arranged around the air inlet 8. Generally, there are 2 or 3 positioning members 4, and the number can be adjusted according to the required size of the adsorption force.

[0032] As a plastic part 6 matching the above-mentioned columnar positioning part 4, Figure 1-4 As shown, the plastic part 6 is in a cap shape and sleeved on the upper end of the positioning part 4 , and the plastic part 6 is embedded in the mounting hole at the lower end of the air inlet connector 2 .

[0033] As a plastic part 6 matching the above-mentioned columnar positioning part 4, Figure 5 As shown, the plastic part 6 is sleeved on the outer side of the positioning part 4 in a sleeve shape, and the positioning part 4 can also fall off after the plastic part 6 melts.

[0034] As another form of the plastic part 6, Figure 6-8 As shown, the plastic part 6 is annular and embedded in the lower end of the air inlet connector 2. There are at least three positioning parts 4, which are axially embedded in the plastic part 6 and adopt a three-point support structure. A ventilation groove 13 is provided in the middle of the blocking piece 3. During normal operation, the airflow can pass through the ventilation groove 13 normally. The function of the ventilation groove 13 is the same as that of the ventilation gap 9. Due to the adoption of an annular structure, the ventilation gap 9 cannot be set.

[0035] As another structure of the positioning member 4, Figure 9-10 As shown, the positioning member 4 is annular, and the plastic member 6 is also annular. The positioning member 4 and the plastic member 6 are arranged concentrically and closely. A ventilation groove 13 is provided in the middle of the blocking piece 3. Similarly, the function of the ventilation groove 13 is the same as that of the ventilation gap 9. Due to the adoption of an annular structure, the ventilation gap 9 cannot be provided.

[0036] The outer side wall of the end of the connector 1 is provided with a threaded connection portion 5 connected to the inner side wall of the air inlet connector 2, so as to facilitate disassembly and installation.

[0037] One end of the air inlet duct 7 is provided with a raised portion 12 higher than the end surface, and the raised portion 12 contacts the fallen blocking piece 3 , so that the blocking piece 3 can quickly block the air inlet duct 7 .

[0038] A conical hole 11 is axially arranged between one end of the air inlet 8 and the inner cavity 10, which can facilitate the diffusion of the intake air and increase the flow rate.

[0039] As an embodiment of the present invention, Figure 2 As shown, during normal use, the air inlet connector 2 is connected to the air outlet of the gas cylinder, the connector 1 is connected to the air pipe, and the gas from the gas cylinder comes out from the air inlet hole 8 through the ventilation gap 9 or the ventilation groove 13 on the sealing piece 3 to enter the inner cavity 10. At this time, the incoming gas cannot push the sealing piece 3 to separate from the positioning piece 4, so the gas can smoothly enter the air inlet duct 7 to achieve normal air intake.

[0040] like Figure 3As shown, when the gas flow rate entering the gas cylinder is too large and overcomes the adsorption force between the blocking piece 3 and the positioning piece 4, the blocking piece 3 will be pushed to separate from the positioning piece 4, and the blocking piece 3 will block the end of the air inlet duct 7, realizing over-flow shutdown and playing a role of safety protection.

[0041] like Figure 4 As shown, when the temperature of the working environment of the connection structure described in this patent rises to a certain level, the plastic part 6 melts, turns into liquid and flows into the inner cavity 10, so that the positioning part 4 falls together with the blocking piece 3, so that the blocking piece 3 blocks the end of the air inlet duct 7, realizing the over-temperature shutdown. Of course, the over-temperature shutdown function is disposable. After use, it is necessary to remove the air inlet connector 2, replace the new plastic part 6, and reset the blocking piece 3.

[0042] The melting temperature of the plastic part 6 is determined according to the melting point of the material of the plastic part 6 itself, and the plastic part 6 made of different materials can be replaced as needed.

[0043] The present invention has the functions of over-flow shutoff and over-temperature shutoff at the same time, and can be independently applied to any gas inlet safety mechanism, which solves the shortcomings of the traditional mechanism that the over-temperature and over-flow devices are set separately, and further solves the traditional design that the over-temperature must be combined with a special cylinder valve to make the function effective. It can be used on any independent gas pipeline and is safe and reliable.

Claims

1. An independent over-temperature shutoff and over-flow shutoff gas safety intake joint mechanism, characterized in that: include: A connector (1), wherein the end of the connector (1) is axially connected to an air intake connector (2) and an air intake passage (7) is axially arranged in the center thereof, and the air intake connector (2) is axially arranged with an air intake hole (8); A blocking piece (3) is arranged in an inner cavity (10) formed between the joint (1) and the air inlet joint (2); At least one positioning member (4) is pressed and embedded into an air inlet connector (2) fixed at the top of the inner cavity (10) through a plastic member (6) in contact with the positioning member (4) and is adsorbed onto a blocking piece (3). A ventilation gap (9) is left between the blocking piece (3) and the top of the inner cavity (10), or a ventilation groove (13) staggered with the air inlet passage (7) is provided on the blocking piece (3).

2. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to claim 1 is characterized in that: An elastic member (14) is provided at the upper end of the positioning member (4).

3. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to claim 1 is characterized in that: The blocking piece (3) and the positioning piece (4) are made of magnets or iron materials, and the materials used for the two are different.

4. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to any one of claims 1 to 3, characterized in that: The positioning member (4) is columnar and has at least two members evenly arranged around the air inlet hole (8).

5. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to claim 4 is characterized in that: The plastic part (6) is in a cap shape and sleeved on the upper end of the positioning part (4).

6. The independent over-temperature shutoff and over-current shutoff gas safety inlet joint mechanism according to claim 4 is characterized in that: The plastic part (6) is sleeve-shaped and sleeved on the outer side of the positioning part (4).

7. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to claim 4 is characterized in that: The plastic part (6) is annular and embedded in the lower end of the air inlet connector (2). There are at least three positioning parts (4) which are axially embedded in the plastic part (6). A ventilation groove (13) is provided in the middle of the blocking piece (3).

8. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to any one of claims 1 to 3, characterized in that: The positioning piece (4) is annular, and the plastic piece (6) is also annular. The positioning piece (4) and the plastic piece (6) are arranged concentrically and closely together. A ventilation groove (13) is provided in the middle of the blocking piece (3).

9. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to any one of claims 1 to 3, characterized in that: The outer side wall of the end of the joint (1) is provided with a threaded connection portion (5) connected to the inner side wall of the air inlet joint (2).

10. The independent over-temperature shutoff and over-flow shutoff gas safety inlet joint mechanism according to any one of claims 1 to 3, characterized in that: One end of the air inlet passage (7) is provided with a raised portion (12) higher than the end surface, and a conical hole (11) is axially provided between one end of the air inlet hole (8) and the inner cavity (10).

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