Tank body internal sealing type leaking stoppage head for fire fighting

Abstract

The utility model discloses a fire-fighting tank internally-sealed type leaking stoppage head which comprises a tank and an air inlet supporting and plugging pipe barrel piece, the air inlet supporting and plugging pipe barrel piece is inserted in the inner side surface of a crack of the tank in a penetrating mode, and the inner side surface of one end of the air inlet supporting and plugging pipe barrel piece is fixedly connected with a rubber air bag. A rubber air inlet nozzle is arranged on one side of the rubber air bag, the rubber air inlet nozzle is fixedly connected to the inner side surface of the air inlet supporting and plugging pipe barrel part, the outer surface of the air inlet supporting and plugging pipe barrel part is slidably sleeved with a supporting plate, and a plugging silica gel layer is arranged on one side of the supporting plate; the outer surface of the air inlet supporting and plugging pipe barrel part is connected with a locking nut through threads, the rubber air bag is adopted for supporting from the inner end, then the supporting plate and the silica gel layer are connected from the outer end in a sleeving mode, the supporting plate can be locked through the locking nut, then the silica gel layer extrudes a crack for sealing, the crack can be plugged through internal and external extrusion, sealing is firm, damage is not prone to occurring, and the service life of the air inlet supporting and plugging pipe barrel part is prolonged. The mechanism is simple and low in cost.

Description

Technical Field

[0001] This utility model relates to the field of sealing leak plugs inside fire-fighting tanks, and more specifically, to a sealing leak plug for fire-fighting tanks. Background Technology

[0002] When tanks storing or transporting oils, liquid chemicals, etc., crack and leak for some reason, firefighters need to urgently use plugging tools to plug and seal the leak. Existing technologies have the following problems: Due to the irregular shape of the crack, the plugging head cannot completely seal the crack in a timely manner; some existing plugging tools use a plug inserted into the crack from the inside out, but the plug is constantly pushed outward by the liquid inside the tank, causing it to shift outward over time, resulting in loosening and incomplete sealing of the crack, thus failing to achieve the original purpose of plugging. Therefore, structural innovation is needed to solve these specific problems.

[0003] In the prior art, such as the invention disclosed in application publication number CN113623402A, a fire-fighting tank internal sealing plug is disclosed, which relates to the field of fire-fighting equipment technology. It includes a plug and a pressure rod. The front end of the pressure rod is threadedly connected to the rear end of the plug. The plug includes a sealing plug and a gas generator. The rear end of the sealing plug is fixedly connected to the front end of the gas generator. The rear end of the gas generator is threadedly connected to the front end of the pressure rod. The invention, through the combination of the plug and the pressure rod, realizes that a large amount of carbon dioxide gas generated after the effervescent disintegrant undergoes an effervescent reaction enters the inflatable component that is plugged into the inner wall of the crack. After its volume expands, it adheres tightly to the inner wall of the tank due to the squeezing force of the liquid inside the tank. It plugs the crack from the inside while avoiding the situation where the liquid inside the tank squeezes the plug out of the crack, resulting in sealing failure. Moreover, the released magnetic powder gathers at the crack due to the mutual magnetic attraction with the annular magnet on the outside of the tank, which is beneficial for filling and sealing irregular cracks and small cracks.

[0004] In existing technologies, such as the aforementioned patent, a latex balloon is used to expand unidirectionally from the inside and press against the inner wall. However, this unidirectional sealing is unstable, the mechanism is complex and easily damaged, and the cost is high. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an internal sealing plug for fire-fighting tanks. It uses a rubber airbag for support from the inside, and then a support plate and a silicone layer are sleeved from the outside. The support plate can be locked by locking nuts, and the silicone layer is used to squeeze and seal the cracks. It can seal the cracks by squeezing from both inside and outside. The seal is firm and not easily damaged. The mechanism is simple and the cost is low.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A fire-fighting tank internal sealing plug includes a tank body and an air inlet support and sealing tube. The air inlet support and sealing tube is inserted into the inner surface of a crack in the tank body. A rubber air bladder is fixedly connected to the inner surface of one end of the air inlet support and sealing tube. A rubber air inlet is provided on one side of the rubber air bladder and is fixedly connected to the inner surface of the air inlet support and sealing tube. A support plate is slidably sleeved on the outer surface of the air inlet support and sealing tube. A sealing silicone layer is provided on one side of the support plate. A locking nut is threadedly connected to the outer surface of the air inlet support and sealing tube. A one-way valve shell is fixedly connected to the inner surface of the other end of the air inlet support and sealing tube. By using a rubber air bladder for support from the inside and then sleeved with the support plate and silicone layer from the outside, the support plate can be locked by the locking nut, and the crack can be sealed by the silicone layer. This allows for internal and external compression sealing of the crack, resulting in a strong seal that is not easily damaged. The mechanism is simple and low in cost.

[0008] Furthermore, the inner surface of the one-way valve housing is provided with an annular protrusion, and a spring and a circular valve sealing block body are slidably connected to the inner surface of the one-way valve housing.

[0009] Furthermore, the outer end of the circular valve sealing block body is tightly fitted to the inner surface of the annular protrusion, and an air inlet groove is provided on the outer surface of the circular valve sealing block body. The air inlet groove is located around the outer edge of the circular valve sealing block body. When the circular valve sealing block body is pushed out by gas, it can slide and move, and the gas can be introduced into the tube from the air inlet groove. The spring can re-compress the circular valve sealing block body to seal it. It can allow unidirectional air intake and is convenient to use.

[0010] Furthermore, the outer surface of the circular valve sealing block body is covered with a rubber layer to increase sealing performance.

[0011] Furthermore, one end of the sealing silicone layer is provided with a protrusion, which is fixedly connected to the inner surface of the support plate, and the inner surface of the protrusion of the sealing silicone layer is tightly fitted onto the outer surface of the air intake support sealing tube.

[0012] Furthermore, the intake support and sealing tube is made of stainless steel, and its outer surface is polished and ground. The sealing silicone layer 6 can be fitted and sealed to prevent leakage.

[0013] Furthermore, the rubber airbag is made of high-strength rubber.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] (1) By using a rubber airbag to support from the inside, and then attaching a support plate and a silicone layer from the outside, the support plate can be locked by locking the nut, and the crack can be sealed by squeezing the silicone layer. The crack can be sealed by squeezing from the inside and outside, and the seal is firm and not easily damaged. The mechanism is simple and the cost is low. Attached Figure Description

[0016] Figure 1 This is a first schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a second schematic diagram of the overall structure of this utility model;

[0018] Figure 3 This is a third schematic diagram of the overall structure of this utility model;

[0019] Figure 4 This is a schematic cross-sectional view of the overall structure of this utility model;

[0020] Figure 5 This is a schematic cross-sectional view of the main body of the one-way valve housing, spring, and circular valve sealing block of this utility model.

[0021] Explanation of the labels in the diagram:

[0022] 1. Tank body, 2. Inlet support and sealing pipe, 3. Rubber airbag, 4. Rubber air inlet nozzle, 5. Support plate, 6. Sealing silicone layer, 7. Locking nut, 8. One-way valve housing, 80. Annular protrusion, 81. Circular valve sealing block body, 82. Spring, 83. Inlet groove. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example 1

[0024] Please see Figure 1-5A fire-fighting tank internal sealing plug includes a tank body 1 and an air inlet support and sealing pipe 2. The air inlet support and sealing pipe 2 is inserted into the inner surface of a crack in the tank body 1. A rubber air bladder 3 is fixedly connected to the inner surface of one end of the air inlet support and sealing pipe 2. A rubber air inlet 4 is provided on one side of the rubber air bladder 3 and is fixedly connected to the inner surface of the air inlet support and sealing pipe 2. A support plate 5 is slidably sleeved on the outer surface of the air inlet support and sealing pipe 2. A sealing silicone layer 6 is provided on one side, and a locking nut 7 is threadedly connected to the outer surface of the air intake support sealing tube 2. A one-way valve shell 8 is fixedly connected to the inner surface of the other end of the air intake support sealing tube 2. By using a rubber airbag to support from the inner end, and then fitting the support plate and silicone layer from the outer end, the support plate can be locked by the locking nut, and the crack can be sealed by the silicone layer. The crack can be sealed by internal and external compression, which is firm and not easy to be damaged. The mechanism is simple and the cost is low.

[0025] An annular protrusion 80 is provided on the inner surface of the one-way valve housing 8. A spring 82 and a circular valve blocking block body 81 are slidably connected to the inner surface of the one-way valve housing 8. The spring 82 can compress the circular valve blocking block body 81 to close and seal. The outer end of the circular valve blocking block body 81 is tightly fitted to the inner surface of the annular protrusion 80, and an air inlet groove 83 is provided on the outer surface of the circular valve blocking block body 81. When air is introduced, the circular valve blocking block body 81 is compressed and slid, allowing the gas to flow along the air inlet groove 83. The air intake support and sealing tube 1 is inserted into the rubber airbag 3 for inflation. The spring 82 compresses the circular air valve sealing block body 81 to reseal and prevent gas leakage. (When removing the airbag, it is necessary to release the air. Insert a screwdriver or other long object along the one-way valve housing 8 to open the circular air valve sealing block body 81 and open the air intake slot 83. Then, the air intake support and sealing tube 2 can be pulled out directly. The rubber airbag 3 can be compressed and contracted, and the rubber airbag 3 can be pulled out for easy removal.)

[0026] The outer surface of the circular valve sealing block body 81 is covered with a rubber layer, which increases the sealing performance when closed. When closed, it can block the gas flow and prevent gas backflow and leakage.

[0027] One end of the sealing silicone layer 6 has a protrusion, which is fixedly connected to the inner surface of the support plate 5. The inner surface of the protrusion of the sealing silicone layer 6 is tightly fitted onto the outer surface of the air intake support sealing tube 2, thereby increasing the sealing performance when fitted onto the air intake support sealing tube 2. The air intake support sealing tube 2 is made of stainless steel, and its outer surface is polished. It can be fitted and sealed without leakage.

[0028] The rubber airbag 3 is made of high-strength rubber. The rubber airbag is made of synthetic rubber, natural rubber and fiber reinforcement layer vulcanized. It has good anti-inflation strength, as well as elasticity and flexibility. The rubber airbag can meet the construction use under various working conditions and has high strength.

[0029] In use, the air intake support and sealing tube 2 is inserted along the crack in the tank body 1. Air is then introduced, inflating the rubber airbag 3. Once fully inflated, the support plate 5 is fitted onto it. One end of the sealing silicone layer 6 has a protrusion, which is fixedly connected to the inner surface of the support plate 5. The inner surface of the protrusion of the sealing silicone layer 6 is tightly fitted onto the outer surface of the air intake support and sealing tube 2, increasing the sealing performance when fitted onto the outside of the air intake support and sealing tube 2. The air intake support and sealing tube 2 is made of stainless steel, and its outer surface is polished. It can be fitted and sealed without leakage. The locking nut 7 is then rotated and installed on the outside of the air intake support and sealing tube 2, and the locking nut 7 is locked and fixed to the outer surface of the support plate 5. This can compress the sealing silicone layer 6, allowing for mutual compression and sealing from the inside and outside, improving the sealing performance. The compression support is stable, with high support force, stable structure, not easily damaged, and low cost.

Claims

1. A fire-fighting tank internal sealing plug, comprising a tank body (1) and an air inlet support sealing pipe (2), characterized in that: The air intake support and sealing tube (2) is inserted into the inner surface of the crack in the tank (1). A rubber air bag (3) is fixedly connected to the inner surface of one end of the air intake support and sealing tube (2). A rubber air inlet (4) is provided on one side of the rubber air bag (3). The rubber air inlet (4) is fixedly connected to the inner surface of the air intake support and sealing tube (2). A support plate (5) is slidably sleeved on the outer surface of the air intake support and sealing tube (2). A sealing silicone layer (6) is provided on one side of the support plate (5). A locking nut (7) is threadedly connected to the outer surface of the air intake support and sealing tube (2). A one-way valve shell (8) is fixedly connected to the inner surface of the other end of the air intake support and sealing tube (2).

2. The fire-fighting tank internal sealing plug according to claim 1, characterized in that: The inner surface of the one-way valve housing (8) is provided with an annular protrusion (80), and the inner surface of the one-way valve housing (8) is slidably connected with a spring (82) and a circular valve sealing block body (81).

3. The fire-fighting tank internal sealing plug according to claim 2, characterized in that: The outer end of the circular air valve blocking block body (81) is tightly attached to the inner surface of the annular protrusion (80), and an air inlet groove (83) is provided on the outer surface of the circular air valve blocking block body (81).

4. The fire-fighting tank internal sealing plug according to claim 2, characterized in that: The outer surface of the circular valve sealing block body (81) is covered with a rubber layer.

5. A fire-fighting tank internal sealing plug according to claim 1, characterized in that: The sealing silicone layer (6) has a protrusion at one end, which is fixedly connected to the inner surface of the support plate (5). The inner surface of the protrusion of the sealing silicone layer (6) is tightly fitted onto the outer surface of the air intake support sealing tube (2).

6. The fire-fighting tank internal sealing plug according to claim 1, characterized in that: The air intake support and plug tube (2) is made of stainless steel, and its outer surface is polished.

7. The fire-fighting tank internal sealing plug according to claim 1, characterized in that: The rubber airbag (3) is made of high-strength rubber.

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