Fireproof joint of oxygen generator

Abstract

The utility model relates to the technical field of oxygenerators, in particular to a fireproof joint of an oxygenerator, which comprises a joint base mounted on the oxygenerator; the installation connector is installed on the connector base, a guide rod assembly moving in the axial direction of the installation connector is arranged in the installation connector, and when the installation connector is connected with the connector base, a containing cavity is formed in the connector base; the inflammable cap is detachably installed at the end, away from the connector base, of the installation connector, and the end, close to the guide rod assembly, of the inflammable cap abuts against the guide rod assembly. The inflammable cap is screwed to the installation connector, the guide rod assembly is triggered to isolate oxygen after the inflammable cap is combusted, fire disasters are prevented, the inflammable cap can be replaced with a new inflammable cap after the fire is extinguished, and the inflammable cap is convenient to use. The fireproof joint can be repeatedly used; the overall size of the fireproof connector is small, installation is more convenient in a limited space, response can be made faster through the small size, oxygen supply is cut off, and fire spreading is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of oxygen generators, and particularly relates to a fireproof joint for an oxygen generator. Background Art

[0002] In the medical, home healthcare, and industrial fields, as an important medical device, an oxygen generator is widely used to provide high-purity oxygen to meet the oxygen needs of patients or in specific environments. However, with the widespread use of oxygen generators, their safety issues have increasingly attracted attention. Especially during the operation of an oxygen generator, due to the combustion-supporting property of oxygen, once a fire breaks out near the gas outlet or connecting components of the oxygen generator, the continuously output high-concentration oxygen from the oxygen generator will greatly fuel the fire and even trigger more serious fire accidents.

[0003] Existing fire prevention measures involve installing a fireproof joint on the oxygen generator. However, the existing fireproof joint is difficult to install, and after use, a new fireproof joint needs to be replaced and cannot be reused.

[0004] Therefore, this application has developed a fireproof joint for an oxygen generator to solve the problems existing in the prior art. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a fireproof joint for an oxygen generator to solve the problems of untimely triggering of the fireproof joint and failure after one use in the prior art.

[0006] The technical solution of the utility model is: a fireproof joint for an oxygen generator, comprising:

[0007] A joint base, installed on the oxygen generator;

[0008] A mounting joint, installed on the joint base. A guide rod assembly that moves axially along the mounting joint is arranged inside the mounting joint. When the mounting joint is connected to the joint base, a receiving cavity is formed inside the joint base;

[0009] An inflammable cap, detachably installed at one end of the mounting joint away from the joint base, and one end of the inflammable cap close to the guide rod assembly abuts against the guide rod assembly.

[0010] Preferably, the guide rod assembly includes a connecting rod, an elastic element, and a sealing ring. A limiting plate is arranged at one end of the connecting rod away from the inflammable cap and is located inside the receiving cavity. Sealing rings and elastic elements are respectively installed on both sides of the limiting plate along the connecting rod. The sealing ring is close to the inflammable cap. One end of the elastic element abuts against the limiting plate, and the other end is fixed on the inner wall surface of the joint base. And when the connecting rod is installed, the elastic element is in a compressed state.

[0011] Preferably, the flammable cap is screwed onto the mounting joint. After the flammable cap burns, a new flammable cap is replaced and mounted on the mounting joint.

[0012] Preferably, after the flammable cap burns, the elastic element rebounds to make the sealing ring abut against one end of the mounting joint away from the flammable cap, sealing the mounting joint.

[0013] Preferably, after the joint base, the mounting joint and the flammable cap are installed, the length of the fireproof joint is between 32 mm and 40 mm, and the maximum diameter of the fireproof joint is less than 15 mm.

[0014] Preferably, the outer side surface of the joint base is also provided with threads and is connected to the outer shell of the oxygen generator through a nut.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] (1) The flammable cap is screwed onto the mounting joint. After the flammable cap burns, the guide rod assembly is triggered to isolate oxygen, preventing a fire. After the fire is extinguished, a new flammable cap can be replaced, enabling the fireproof joint to be reused;

[0017] (2) The overall size of the fireproof joint is small, which is more convenient for installation in a limited space. Moreover, the small volume can respond faster to cut off the oxygen supply and prevent the spread of fire;

[0018] (3) The fireproof joint is installed on the oxygen generator through a nut, which is convenient for disassembly and installation. Description of the Drawings

[0019] The present utility model will be further described below with reference to the drawings and embodiments:

[0020] Figure 1 It is an exploded view of a fireproof joint of an oxygen generator according to the present utility model;

[0021] Figure 2 It is an assembled view of a fireproof joint of an oxygen generator according to the present utility model;

[0022] Figure 3 It is a side sectional view of a fireproof joint of an oxygen generator according to the present utility model;

[0023] Figure 4 It is a structural view of the guide rod assembly according to the present utility model.

[0024] Among them: 1. Joint base; 2. Mounting joint; 3. Guide rod assembly; 31. Connecting rod; 32. Elastic element; 33. Sealing ring; 34. Limiting plate; 4. Accommodating cavity; 5. Flammable cap. Detailed Embodiments

[0025] The following will further elaborate on the content of the present utility model in conjunction with specific embodiments:

[0026] As Figure 1 - Figure 2 shown, an oxygen generator fireproof joint includes a joint base 1, a mounting joint 2, and a flammable cap 5. The outer surface of the joint base 1 is provided with threads and is installed on the outer shell of the oxygen generator through a nut. Using the nut can quickly and firmly connect the joint base 1 to the oxygen generator, improving the installation efficiency. When maintenance or replacement of the fireproof joint is required, using the nut for installation makes it more convenient to disassemble, improving the maintenance efficiency. At the same time, the nut connection is tighter and can prevent oxygen or other media from leaking at the fireproof joint. The mounting joint 2 is installed on the joint base 1, and the flammable cap 5 is installed at one end of the mounting joint 2 away from the joint base 1. And a guide rod assembly 3 is provided inside the mounting joint 2. One end of the guide rod assembly 3 abuts against the flammable cap 5. When the flammable cap 5 burns, the guide rod assembly 3 loses the abutting flammable cap 5 and will move towards the direction of the flammable cap 5, sealing the mounting joint 2 to prevent oxygen from entering.

[0027] Among them, the flammable cap 5 is made of combustible material, while the joint base 1 and the mounting joint 2 are both made of non-combustible materials. After the flammable cap 5 burns, it will not affect the mounting joint 2 and the joint base 1.

[0028] In this embodiment, as Figure 3 - Figure 4 shown, the guide rod assembly 3 includes a connecting rod 31, an elastic element 32, and a sealing ring 33. A limiting plate 34 is provided on the connecting rod 31. The elastic element 32 and the sealing ring 33 are respectively arranged on both sides of the limiting plate 34. The sealing ring 33 is located on the side close to the mounting joint 2. And the elastic element 32, the sealing ring 33, and the limiting plate 34 are all located in the accommodating cavity 4. The accommodating cavity 4 provides a moving space for the movement of the connecting rod 31. The elastic element 32 is a compressible and resilient structure. When the guide rod assembly 3 is installed, one end of the elastic element 32 abuts against the flammable cap 5, and the other end is fixed on the inner wall of the joint base 1 and is in a compressed state. When the connecting rod 31 is not blocked by the flammable cap 5, the spring rebounds and pushes the connecting rod 31 towards the direction of the flammable cap 5, pushing the sealing ring 33 to the end of the mounting joint 2 away from the flammable cap 5, thereby sealing the oxygen channel and interrupting the supply of oxygen.

[0029] Among them, the flammable cap 5 is installed on the mounting joint 2 by screwing. When the flammable cap 5 burns, the connecting rod 31 moves towards the direction of the flammable cap 5 and makes the sealing ring 33 abut against the end of the mounting joint 2 away from the flammable cap 5, thereby preventing oxygen from passing through. The detachable flammable cap 5 is convenient for maintenance personnel to clean and inspect regularly, effectively removing dust, dirt and other substances that may affect its performance, ensuring its normal working state. At the same time, it can also ensure that when damage or performance decline is found, it can be replaced in time, thus avoiding potential safety hazards. And when the flammable cap 5 is damaged or used, there is no need to replace the entire fireproof joint, thereby reducing the overall replacement cost.

[0030] Furthermore, after the flammable cap 5 burns, the elastic element 32 rebounds to make the sealing ring 33 abut against one end of the mounting joint 2 away from the flammable cap 5. The moving distance of the connecting rod 31 is less than the rebound distance of the elastic element 32, ensuring that the sealing ring 33 can be pressed against the mounting joint 2 under force, and the contour of the sealing ring 33 matches the contour of the end of the mounting joint 2, so as to completely seal the mounting joint 2 under the action of the elastic element 32.

[0031] To facilitate the installation of the fireproof joint and enable a quick response in case of fire, the total length of the fireproof joint is between 32 mm and 40 mm, and the maximum diameter of the fireproof joint is less than 15 mm. Preferably, the length of the fireproof joint is 36 mm and the maximum diameter is 14 mm. The small-sized fireproof joint will reduce the use of combustible materials, thereby reducing the fire risk to a certain extent and also reducing the cost. Moreover, the small-sized fireproof joint is easier to burn out, thus enabling the guide rod assembly 3 to respond faster and cut off the oxygen supply.

[0032] The implementation principle of this embodiment:

[0033] The fireproof joint is installed on the outer shell of the oxygen generator through a nut. After the flammable cap 5 is installed, the elastic element 32 is in a compressed state, and the connecting rod 31 abuts against the flammable cap 5. Oxygen can pass through the fireproof joint smoothly. When a fire occurs, the flammable cap 5 is ignited. After the flammable cap 5 burns, the connecting rod 31 loses the abutting part. At this time, the elastic element 32 rebounds and pushes the connecting rod 31 in the direction of the flammable cap 5, and at the same time makes the sealing ring 33 abut against one end of the mounting joint 2 away from the flammable cap 5, thereby sealing the mounting joint 2 and preventing oxygen from passing through, and not further fueling the fire. When the fire is extinguished, since the installation structure and the joint base 1 are both made of non-combustible materials, only the flammable cap 5 needs to be replaced, and the fireproof joint can be reused.

[0034] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention. The purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention.

Claims

1. A fireproof joint for an oxygen concentrator, characterized in that: include: A connector base (1) is mounted on the oxygen concentrator; A mounting joint (2) is mounted on the joint base (1); a guide rod assembly (3) is provided inside the mounting joint (2) and moves along the axial direction of the mounting joint (2); when the mounting joint (2) is connected to the joint base (1), a receiving cavity (4) is formed inside the joint base (1); The flammable cap (5) is detachably mounted on an end of the mounting joint (2) away from the joint base (1); an end of the flammable cap (5) close to the guide rod assembly (3) abuts against the guide rod assembly (3).

2. The fireproof joint of an oxygen concentrator according to claim 1, characterized in that: The guide rod assembly (3) comprises a connecting rod (31), an elastic element (32), and a sealing ring (33); a limiting plate (34) is provided at one end of the connecting rod (31) away from the flammable cap (5) and is located in the accommodating cavity (4); a sealing ring (33) and an elastic element (32) are respectively installed along two sides of the limiting plate (34) of the connecting rod (31); the sealing ring (33) is close to the flammable cap (5); one end of the elastic element (32) abuts against the limiting plate (34) and the other end is fixed to the inner wall surface of the joint base (1); and when the connecting rod (31) is installed, the elastic element (32) is in a compressed state.

3. The fireproof joint of an oxygen concentrator according to claim 1, characterized in that: The flammable cap (5) is screwed onto the mounting joint (2); when the flammable cap (5) burns, a new flammable cap (5) is replaced and mounted on the mounting joint (2).

4. The fireproof joint of an oxygen concentrator according to claim 2, characterized in that: When the flammable cap (5) burns, the elastic element (32) rebounds to cause the sealing ring (33) to abut against an end of the mounting joint (2) away from the flammable cap (5), thereby sealing the mounting joint (2).

5. The fireproof joint of an oxygen concentrator according to claim 1, characterized in that: After the joint base (1), the mounting joint (2) and the flammable cap (5) are installed, the length of the fireproof joint is between 32 mm and 40 mm, and the maximum diameter of the fireproof joint is less than 15 mm.

6. The fireproof joint of an oxygen concentrator according to claim 1, characterized in that: The outer side surface of the joint base (1) is also provided with threads and is connected to the outer shell of the oxygen concentrator via a nut.

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