Rapid fusing structure

Abstract

The utility model relates to the technical field of valve fusing structures, in particular to a rapid fusing structure which comprises a rain cover, a connecting rod, a fusing structure and a supporting rod, the supporting rod is arranged on a fire-retardant element, the fusing structure is arranged on the supporting rod, the connecting rod is arranged on the fusing structure, the rain cover is arranged on the connecting rod, and the fusing structure is arranged on the connecting rod. The top end of the fusing structure is arranged towards the rainproof cover, by arranging the fusing structure, flames directly make contact with the fusing structure when a fire disaster occurs, the reaction is sensitive, safe and reliable during fusing, and meanwhile the burning resistance of a fire retardant product can be fully exerted through the quick response of the fusing structure.

Description

Technical Field

[0001] The utility model relates to the technical field of valve fusing structures, in particular to a fast fusing structure. Background Art

[0002] Outdoor fire-retardant products, such as flame arresters and fire-retardant breathing valves, are equipped with rain covers to prevent water or impurities from entering the product and affecting its performance. When a fire occurs, the rain cover needs to be opened in time to prevent the flame on the fire-retardant element from burning in the narrow space inside the rain cover, causing rapid accumulation of heat and affecting the fire-resistant performance of the fire-retardant product. Therefore, for fire-resistant fire-retardant products, a rain cover that can be opened quickly is crucial.

[0003] However, the prior art still has shortcomings. For example, the patent number is: CN202121158325.4, which is a burn-resistant fire-retardant breathing valve fuse structure. The fuse structure is used to set a rain cover on the fire-retardant breathing valve body. The fuse structure includes an upper cover and a lower cover. The openings of the upper cover and the lower cover are connected to form a cavity for filling the fusible medium. The connection between the upper cover and the lower cover is achieved by extruding the fusible medium, and then connected by bolts to fix the rain cover on the breathing valve body. The structure wraps a fusible medium with upper and lower covers made of metal. The fusible medium melts at high temperature to open the rain cover. In this structure, since the fusible medium is wrapped in metal, a large amount of fusible medium will remain in the metal upper and lower covers when the fusible medium melts and opens. When the temperature continues to rise, the fusible medium remaining in the metal upper cover will continue to melt and then drip onto the fire-retardant element, affecting the fire-retardant performance. Utility Model Content

[0004] The purpose of the utility model is to provide a fast fuse structure to solve the problem raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a quick fuse structure, comprising: a rain cover, a connecting rod, a fuse structure and a support rod, wherein the support rod is arranged on the fire-blocking element, the support rod is equipped with the fuse structure, the fuse structure is equipped with a connecting rod, the connecting rod is provided with a rain cover, and the top of the fuse structure is arranged toward the rain cover.

[0006] Preferably, the connecting rod comprises: a spiral tube, a circular hole is opened on the top surface of the receiving seat of the fuse structure, the bottom surface of the receiving seat is connected to the support rod, the bottom end of the circular hole is connected to the second circular hole, the inner diameter of the second circular hole is larger than the inner diameter of the second circular hole, the bottom wall of the second circular hole is in contact with the bottom surface of the rod body of the connecting rod, the spiral tube is mounted on the rod body, and a fusible alloy is provided between the spiral tube and the inner wall of the circular hole.

[0007] Preferably, a clamping ring is sleeved on the rod body of the connecting rod, the clamping ring is arranged in the second circular hole, and a fusible alloy is arranged between the second circular hole and the clamping ring.

[0008] Preferably, a pin hole is formed through the side wall of the rod body of the connecting rod, and a fusible alloy is provided between the pin hole and the circular hole.

[0009] Preferably, an annular groove is formed in the circumferential direction of the side wall of the rod body of the connecting rod, and a plurality of fusible alloy balls are arranged between the bottom wall of the annular groove and the two top walls of the circular hole.

[0010] Preferably, the height of the top surface of the fusible alloy is lower than the height of the top surface of the receiving seat.

[0011] Preferably, a circular ring is provided on the top surface of the receiving seat, and the inner diameter of the circular ring is larger than the inner diameter of the circular hole.

[0012] Preferably, a chamfer is provided at the junction of the top surface of the circular ring and its side wall.

[0013] Preferably, a spring or a torsion spring is arranged between the rain cover and the fire-blocking element.

[0014] Preferably, a retaining ring is installed on the rod body, the bottom surface of the rain cover is in contact with the top surface of the retaining ring, the rod body is plugged into the mounting port of the rain cover, a stud is installed on the rod body, the stud is threadedly connected to the fastening nut, and the bottom surface of the fastening nut is in contact with the top surface of the rain cover.

[0015] The beneficial effects of the utility model are as follows:

[0016] 1. By setting up a fuse structure, the flame directly contacts the fuse structure when a fire occurs, and the fuse structure reacts sensitively, safely and reliably. At the same time, the rapid response of the fuse structure can fully exert the fire resistance performance of the fire-retardant product;

[0017] 2. The height of the top surface of the fusible alloy is set lower than the height of the top surface of the receiving seat. When the fusible alloy melts due to a fire, it is prevented from dripping onto the fire-blocking element, thereby further ensuring the performance of the fire-blocking element. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a cross-sectional view of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the rod structure equipped with a spiral tube in the utility model;

[0020] Figure 3 This is a schematic diagram of the rod structure equipped with a clamp ring according to the utility model;

[0021] Figure 4 This is a schematic diagram of the rod structure with a pin hole in the utility model;

[0022] Figure 5 This is a schematic diagram of the installation position of the fusible alloy ball of the utility model.

[0023] In the figure: a fastening nut 1, a rain cover 2, a connecting rod 3, a fuse structure 4, a fusible alloy 401, a receiving seat 402, a fusible alloy ball 403, and a supporting rod 5. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Example 1: Reference Figure 1-Figure 5 A quick fuse structure comprises: a rain cover 2, a connecting rod 3, a fuse structure 4 and a support rod 5, wherein the support rod 5 is arranged on a fire-blocking element, the support rod 5 is provided with the fuse structure 4, the fuse structure 4 is provided with a connecting rod 3, the connecting rod 3 is provided with a rain cover 2, and the top of the fuse structure 4 is arranged toward the rain cover 2.

[0027] The principle of the above scheme is:

[0028] The support rod 5 is installed on the fire-blocking element, the fuse structure 4 is installed on the support rod 5, and the connecting rod 3 is installed on the fuse structure 4. Finally, the position of the rain cover 2 is adjusted so that the top of the fuse structure 4 is set toward the rain cover 2, and the rain cover 2 is installed on the connecting rod 3. When a fire occurs, a stable flame is generated inside the rain cover 2. As the flame burns, the temperature inside the rain cover 2 gradually increases. The top of the fuse structure 4 is set toward the rain cover 2 and can be directly exposed to the flame. As the temperature rises, the fuse structure 4 melts, causing it to break away from the contact with the connecting rod 3, and finally the rain cover 2 is separated.

[0029] The beneficial effects of the above scheme are:

[0030] By providing the fuse structure 4, when a fire occurs, the flame directly contacts the fuse structure 4, and the fuse structure 4 reacts sensitively, safely and reliably when fusing. Meanwhile, the quick response of the fuse structure 4 can fully exert the burning resistance of the fire-retardant product.

[0031] Example 2: Reference Figure 1-Figure 5 The connecting rod 3 includes: a spiral tube, a circular hole is opened on the top surface of the receiving seat 402 of the fuse structure 4, the bottom surface of the receiving seat 402 is connected to the support rod 5, the bottom end of the circular hole is connected to the circular hole 2, the inner diameter of the circular hole 2 is larger than the inner diameter of the circular hole, the bottom wall of the circular hole 2 is in contact with the bottom surface of the rod body of the connecting rod 3, a spiral tube is mounted on the rod body, and a fusible alloy 401 is provided between the spiral tube and the inner wall of the circular hole.

[0032] The principle of the above scheme is:

[0033] A socket 402 is installed on the support rod 5, a circular hole is opened on the top surface of the socket 402, and a second circular hole is opened at the bottom end of the circular hole. The inner diameter of the second circular hole is larger than the inner diameter of the circular hole. When the connecting rod 3 is composed of a rod body and a screw tube, the screw tube can be fixed to the bottom of the rod body, and the bottom surface of the rod body contacts the bottom wall of the second circular hole. The fusible alloy 401 is poured between the screw tube and the inner wall of the circular hole to complete the fixation between the socket 402 and the connecting rod 3.

[0034] The beneficial effects of the above scheme are:

[0035] The fusible alloy 401 is poured between the spiral tube and the inner wall of the circular hole. After the fusible alloy 401 is cooled, a threaded hole is generated in the middle of the fusible alloy 401, and the threaded hole is connected to the spiral tube. The fusible alloy 401 is fixed in the circular hole and the second circular hole, which improves the stability of the connecting rod 3 and the rain cover 2 after installation, and facilitates the removal of the connecting rod 3 from the fusible alloy 401 with the threaded hole. The circular hole increases the contact area of ​​the fusible alloy 401 with the flame, and utilizes the physical properties of the alloy at high temperature, so as to quickly fuse the connection between the fusible alloy 401 and the spiral tube in the connecting rod 3.

[0036] Example 3: Reference Figure 1-Figure 5 The connecting rod 3 is provided with a clamping ring on its rod body, the clamping ring is arranged in the second circular hole, and a fusible alloy 401 is arranged between the second circular hole and the clamping ring.

[0037] The principle of the above scheme is:

[0038] When the connecting rod 3 is composed of a rod body and a clamping ring, the fusible alloy 401 is poured between the second circular hole and the clamping ring to complete the fixation between the receiving seat 402 and the connecting rod 3 .

[0039] The beneficial effects of the above scheme are:

[0040] When a fire occurs, it is convenient to quickly fuse the connection between the fusible alloy 401 and the clamp ring in the connecting rod 3; at the same time, when a fire does not occur, the longitudinal and radial stability of the connecting rod 3 after installation is improved.

[0041] Example 4: Reference Figure 1-Figure 5A pin hole is formed through the side wall of the connecting rod 3, and a fusible alloy 401 is provided between the pin hole and the circular hole.

[0042] The principle of the above scheme is:

[0043] When the connecting rod 3 is composed of a rod body and a pin hole opened on the rod body, the fusible alloy 401 is poured between the pin hole and the circular hole.

[0044] The beneficial effects of the above scheme are:

[0045] When a fire occurs, it is convenient to quickly fuse the connection between the fusible alloy 401 and the pin hole in the connecting rod 3; at the same time, when a fire does not occur, the longitudinal and circumferential stability of the connecting rod 3 after installation is improved.

[0046] Example 5: Reference Figure 1-Figure 5 The connecting rod 3 has an annular groove formed around its side wall, and a plurality of fusible alloy balls 403 are mounted between the bottom wall of the annular groove and the top walls of the circular hole.

[0047] The principle of the above scheme is:

[0048] When the connecting rod 3 is composed of a rod body and an annular groove on the rod body, a plurality of fusible alloy balls 403 are installed between the bottom wall of the annular groove and the two top walls of the circular hole. The fusible alloy balls 403 and the fusible alloy 401 are both composed of brass and white copper alloy with a melting point between 80°C and 160°C.

[0049] The beneficial effects of the above scheme are:

[0050] When a fire occurs, the fusible alloy ball 403 can be melted quickly, thereby disconnecting the annular groove on the connecting rod 3; at the same time, the fusible alloy ball 403 is provided to reduce the amount of alloy material used and reduce the manufacturing cost; while reducing the amount of alloy material used, the heating area of ​​the fusible alloy ball 403 is increased when a fire occurs, further improving the melting speed.

[0051] Example 6: Reference Figure 1-Figure 5 , the height of the top surface of the fusible alloy 401 is lower than the height of the top surface of the receiving seat 402.

[0052] The principles and beneficial effects of the above scheme are:

[0053] The height of the top surface of the fusible alloy 401 is set lower than the height of the top surface of the receiving seat 402. When the fusible alloy 401 melts in a fire, it is prevented from dripping onto the fire-blocking element, thereby further ensuring the performance of the fire-blocking element.

[0054] Example 7: Reference Figure 1 and Figure 2 A circular ring is disposed on the top surface of the receiving seat 402, and the inner diameter of the circular ring is larger than the inner diameter of the circular hole.

[0055] The principles and beneficial effects of the above scheme are:

[0056] A circular ring is disposed on the top surface of the receiving seat 402 to further restrict the flow of the melted fusible alloy 401 .

[0057] Example 8: Reference Figure 1-Figure 5 A chamfer is provided at the intersection of the top surface of the circular ring and its side wall.

[0058] The principles and beneficial effects of the above scheme are:

[0059] A chamfer is provided at the junction of the top surface of the ring and its side wall to prevent the operator from cutting his palm when disassembling and assembling the receiving seat 402 .

[0060] Example 9: Reference Figure 1-Figure 5 A spring or torsion spring is installed between the rain cover 2 and the fire-blocking element.

[0061] The principles and beneficial effects of the above scheme are:

[0062] When a spring is provided in the structure, the rain cover 2 can be quickly ejected after the connecting rod 3 is melted; when a torsion spring is provided in the structure, the rain cover 2 can be rotated at a specified angle and ejected after the connecting rod 3 is melted.

[0063] Example 10: Reference Figure 1-Figure 5 The rod body is provided with a retaining ring, the bottom surface of the rain cover 2 is in contact with the top surface of the retaining ring, the rod body is plugged into the mounting port of the rain cover 2, a stud is provided on the rod body, the stud is threadedly connected with the fastening nut 1, and the bottom surface of the fastening nut 1 is in contact with the top surface of the rain cover 2.

[0064] The principle of the above scheme is:

[0065] Move the rain cover 2 and insert its installation port onto the rod body. The bottom surface of the rain cover 2 contacts and fits with the top surface of the retaining ring. Screw the fastening nut 1 onto the stud until the bottom surface of the fastening nut 1 contacts and fits with the top surface of the rain cover 2. Then finish screwing the fastening nut 1.

[0066] The beneficial effects of the above scheme are:

[0067] The fastening nut 1 is arranged to cooperate with the retaining ring, thereby improving the stability of the rain cover 2 after installation and facilitating its replacement.

[0068] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

Claims

1. A fast-blow fuse structure, characterized in that: include: A rain cover (2), a connecting rod (3), a fuse structure (4) and a support rod (5), wherein the support rod (5) is arranged on a fire-blocking element, the support rod (5) is provided with a fuse structure (4), the fuse structure (4) is provided with a connecting rod (3), the connecting rod (3) is provided with a rain cover (2), and the top end of the fuse structure (4) is arranged toward the rain cover (2).

2. A fast-blow fuse structure according to claim 1, characterized in that: The connecting rod (3) comprises a spiral tube, a circular hole is formed on the top surface of the receiving seat (402) of the fuse structure (4), the bottom surface of the receiving seat (402) is connected to the support rod (5), the bottom end of the circular hole is connected to the second circular hole, the inner diameter of the second circular hole is larger than the inner diameter of the circular hole, the bottom wall of the second circular hole is in contact with the bottom surface of the rod body of the connecting rod (3), the spiral tube is mounted on the rod body, and a fusible alloy (401) is provided between the spiral tube and the inner wall of the circular hole.

3. A fast-blow fuse structure according to claim 1, characterized in that: The rod body of the connecting rod (3) is sleeved with a snap ring, which is arranged in the second circular hole, and a fusible alloy (401) is arranged between the second circular hole and the snap ring.

4. A fast-blow fuse structure according to claim 1, characterized in that: A pin hole is formed through the side wall of the rod body of the connecting rod (3), and a fusible alloy (401) is provided between the pin hole and the circular hole.

5. A fast-blow fuse structure according to claim 1, characterized in that: The connecting rod (3) has an annular groove circumferentially formed on the side wall of the rod body, and a plurality of fusible alloy balls (403) are arranged between the bottom wall of the annular groove and the two top walls of the circular hole.

6. A fast-blow fuse structure according to claim 4, characterized in that: The height of the top surface of the fusible alloy (401) is lower than the height of the top surface of the receiving seat (402).

7. A fast-blow fuse structure according to claim 6, characterized in that: The top surface of the receiving seat (402) is provided with a circular ring, and the inner diameter of the circular ring is larger than the inner diameter of the circular hole.

8. A fast-blow fuse structure according to claim 7, characterized in that: A chamfer is provided at the junction of the top surface of the circular ring and its side wall.

9. A fast-blow fuse structure according to claim 7, characterized in that: A spring or a torsion spring is arranged between the rain cover (2) and the fire-blocking element.

10. A fast-blow fuse structure according to claim 9, characterized in that: The rod body is provided with a retaining ring, the bottom surface of the rain cover (2) is in contact with the top surface of the retaining ring, the rod body is plugged into the mounting opening of the rain cover (2), the rod body is provided with a stud, the stud is threadedly connected to the fastening nut (1), and the bottom surface of the fastening nut (1) is in contact with the top surface of the rain cover (2).

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