Fire hydrant blank cap

Abstract

The utility model discloses a fire hydrant blank cap which comprises a shell, the shell comprises an installation cavity, a structural ring extending outwards from the bottom of the installation cavity is arranged in the installation cavity, a protection box is installed in the installation cavity and comprises a first cavity, a second cavity and a third cavity which are arranged in the axial direction of the shell, the first cavity is connected with the second cavity, and the third cavity is connected with the second cavity. The second cavity is connected with the third cavity, the first cavity and the second cavity are arranged in the structural ring, the cavities are connected with a supporting ring detachably connected with the structural ring, and the third cavity is partially arranged in the structural ring and partially extends to the opening of the mounting cavity. The electronic components are contained in the protection box, meanwhile, the protection box is divided into the first sealing box, the second sealing box and the third sealing box, different parts in the whole body in the three sealing boxes can be independently protected, when one part is affected, the other part cannot be involved, and the sealing effect is good. Meanwhile, when one part is damaged, only the corresponding sealing box needs to be replaced, and the whole part does not need to be replaced.

Description

Technical Field

[0001] The utility model relates to the technical field of fire hydrant accessories, and more specifically, to a fire hydrant blank cap. Background Art

[0002] The Chinese utility model patent with the publication number of CN221193550U discloses a smart blank cap structure for a fire hydrant. The smart blank cap structure for the fire hydrant includes a blank cap body, a fan blade and a sensing structure. The blank cap body includes an upper cover and a lower cover. The sensing structure includes a main circuit, a detection circuit and a sensing circuit. The detection circuit and the sensing circuit are both electrically connected to the main circuit. The sensing circuit is a closed loop. An electrode is provided on the detection circuit, and the electrode is provided at the bottom of the lower cover. A magnet is provided on the fan blade, and the fan blade is hingedly provided at the bottom of the lower cover. The blank cap body is arranged at the water outlet of the fire hydrant, and the lower cover is located inside the water outlet of the fire hydrant.

[0003] In the above sealing cap, the battery and the circuit board are both installed in the space formed by the upper cover and the lower cover. The battery, the circuit board and the electrode are installed integrally inside. When one of them is damaged, the whole needs to be disassembled and replaced, and the maintenance period is long and the cost is high. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a fire hydrant blank cap that is convenient for maintenance.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model discloses a fire hydrant blank cap, which includes a housing. The housing includes an installation cavity. A structural ring extending outward from the bottom of the installation cavity is arranged in the installation cavity. A protection box is installed in the installation cavity. The protection box includes a first chamber, a second chamber and a third chamber arranged along the axial direction of the housing. The first chamber is connected to the second chamber, and the second chamber is connected to the third chamber. The first chamber and the second chamber are placed inside the structural ring. The chamber is connected with a support ring that is detachably connected to the structural ring. Part of the third chamber is placed inside the structural ring and part of it extends to the opening of the installation cavity.

[0007] Further, a first sealing groove is arranged on the end face of the structural ring, a first sealing ring is embedded in the first sealing groove, and the support ring presses the first sealing ring and contacts the structural ring.

[0008] Further, the protective box includes a first sealed box, a second sealed box, and a third sealed box each having an opening. A sealing cover is provided at the opening of the first sealed box. The bottom of the first sealed box is inserted into the opening of the second sealed box, and the bottom of the second sealed box is inserted into the opening of the third sealed box. The first sealed box and the sealing cover form the first chamber, the second sealed box and the bottom of the first sealed box form the second chamber, the third sealed box and the bottom of the second sealed box form the third chamber, and the support ring is fixed to the outer wall of the third sealed box.

[0009] Further, a limiting groove is provided at the bottom of the installation cavity, a spring is installed in the limiting groove, the sealing cover is provided with a recessed portion recessed towards the first sealed box, and the spring extends into the recessed portion to abut against the sealing cover.

[0010] Further, a second sealing groove is provided at the opening of the first sealed box, a second sealing ring is embedded in the second sealing groove, the sealing cover is inserted into the opening of the first sealed box, and the sealing cover presses the second sealing ring and contacts the second sealing groove.

[0011] Further, a third sealing groove is provided at the opening of the second sealed box, a third sealing ring is embedded in the third sealing groove, the bottom of the first sealed box is provided with a first plugging ring inserted into the opening of the second sealed box, and the first plugging ring presses the third sealing ring and contacts the third sealing groove.

[0012] Further, a fourth sealing groove is provided at the opening of the third sealed box, a fourth sealing ring is embedded in the fourth sealing groove, the bottom of the second sealed box is provided with a second plugging ring inserted into the opening of the third sealed box, and the second plugging ring presses the fourth sealing ring and contacts the fourth sealing groove.

[0013] The beneficial effects of the present utility model are as follows:

[0014] The electronic components are accommodated by the protective box. At the same time, the protective box is divided into a first sealed box, a second sealed box, and a third sealed box. Different components in the whole are in the three sealed boxes, and the components can be protected separately. When one of the components is affected, it will not implicate another component. At the same time, when one of the components is damaged, only the corresponding sealed box needs to be replaced instead of replacing the whole component, which is more convenient for maintenance and also reduces the cost. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a sectional view of the present utility model;

[0017] Figure 3 is Figure 2 an enlarged view of part A in

[0018] Figure 4 is Figure 2 an enlarged view of part B in

[0019] Figure 5 a structural schematic diagram of the housing

[0020] Figure 6 a structural schematic diagram of the protective box

[0021] Reference numerals: housing 100, installation cavity 110, structural ring 120, first sealing groove 121, first sealing ring 122, limiting groove 130, spring 131, protective box 200, first chamber 201, second chamber 202, third chamber 203, wire passing hole 204, first sealing box 210, second sealing groove 211, second sealing ring 212, first plugging ring 213, second sealing box 220, third sealing groove 221, third sealing ring 222, second plugging ring 223, third sealing box 230, fourth sealing groove 231, fourth sealing ring 232, sealing cover 240, support ring 300, fastener 310. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Refer to Figures 1 to 6, a fire hydrant blanking cap, comprising a housing 100. The housing 100 includes an installation cavity 110. A protection box 200 is installed in the installation cavity 110. A battery, a circuit board and electrodes are installed in the protection box 200. The protection box 200 includes a first sealing box 210 with an opening, a second sealing box 220 and a third sealing box 230. A sealing cover 240 is provided at the opening of the first sealing box 210. A second sealing groove 211 is provided at the opening of the first sealing box 210. A second sealing ring 212 is embedded in the second sealing groove 211. The sealing cover 240 is inserted into the opening of the first sealing box 210. The sealing cover 240 presses the second sealing ring 212 and contacts the second sealing groove 211. The first sealing box 210 and the sealing cover 240 form a first chamber 201. A third sealing groove 221 is provided at the opening of the second sealing box 220. A third sealing ring 222 is embedded in the third sealing groove 221. A first insertion ring 213 is provided at the bottom of the first sealing box 210 and is inserted into the opening of the second sealing box 220. The first insertion ring 213 presses the third sealing ring 222 and contacts the third sealing groove 221. The second sealing box 220 and the bottom of the first sealing box 210 form a second chamber 202. A fourth sealing groove 231 is provided at the opening of the third sealing box 230. A fourth sealing ring 232 is embedded in the fourth sealing groove 231. A second insertion ring 223 is provided at the bottom of the second sealing box 220 and is inserted into the opening of the third sealing box 230. The second insertion ring 223 presses the fourth sealing ring 232 and contacts the fourth sealing groove 231. The third sealing box 230 and the bottom of the second sealing box 220 form a third chamber 203. A battery is installed in the first chamber 201, a circuit board is installed in the second chamber 202, and electrodes are installed in the third chamber 203. At the same time, wire passing holes 204 are provided at the bottom of the first sealing box 210 and the bottom of the second airtight box. The battery is electrically connected to the circuit board through a wire passing through the wire passing hole 204 of the first sealing box 210. The circuit board is connected to the electrodes through a wire passing through the wire passing hole 204 of the second sealing box 220.

[0024] The second sealing ring 212 is pressed to seal the connection between the opening of the first sealing box 210 and the sealing cover 240, thereby preventing water from entering the first chamber 201 and affecting the battery. The third sealing ring 222 is pressed to seal the connection between the second sealing box 220 and the first sealing box 210, thereby preventing water from entering the second chamber 202 and affecting the circuit board. The fourth sealing ring 232 is pressed to seal the connection groove between the third sealing box 230 and the second sealing box 220, thereby preventing water from entering the third chamber 203 and affecting the electrodes.

[0025] A structural ring 120 extending outward from the bottom of the installation cavity 110 is provided inside the installation cavity 110. A support ring 300 is fixed to the outer wall of the third sealing box 230. The support ring 300 and the structural ring 120 are fixed by fasteners 310, so that the protection box 200 is fixed to the housing 100. At this time, the first sealing box 210 and the second sealing box 220 are embedded in the structural ring 120, and a part of the third sealing box 230 is embedded in the structural ring 120. A first sealing groove 121 is provided on the structural ring 120, and a first sealing ring 122 is embedded in the first sealing groove 121. Through the first sealing ring 122, the connection between the structural ring 120 and the support ring 300 can be sealed. At the same time, the first sealing ring 122, the second sealing ring 212, the third sealing ring 222, and the fourth sealing ring 232 form a double sealing effect, further preventing water from entering the inside of the protection box 200.

[0026] A limit groove 130 is installed at the bottom of the installation cavity 110, and a spring 131 is installed in the limit groove 130. The sealing cover 240 is provided with a recessed portion recessed in the direction of the first sealing box 210, and the spring 131 extends into the recessed portion and abuts against the sealing cover 240. When the protection box 200 extends to the bottom of the installation cavity 110, the spring 131 will squeeze the protection box 200, so that the first sealing box 210, the second sealing box 220, and the third sealing box 230 are squeezed against each other, ensuring the stability of their connection. At the same time, the second sealing ring 212, the third sealing ring 222, and the fourth sealing ring 232 are subjected to increased extrusion and greater deformation, thereby enhancing the sealing performance of the first chamber 201, the second chamber 202, and the third chamber 203.

[0027] One end of the third sealing box 230 facing the opening of the installation cavity 110 is provided with an extension end, and an extension hole is provided at the end of the extension section. A part of the electrode extends out of the installation hole, and at the same time, the injection hole is sealed with epoxy resin on the extension hole.

[0028] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should also be regarded as the protection scope of the present invention.

Claims

1. A fire hydrant blanking cap, characterized in that, It includes a housing (100), the housing (100) includes an installation cavity (110), a structural ring (120) extending outward from the bottom of the installation cavity (110) is provided in the installation cavity (110), a protection box (200) is installed in the installation cavity (110), the protection box (200) includes a first chamber (201), a second chamber (202) and a third chamber (203) arranged along the axial direction of the housing (100), the first chamber (201) is connected to the second chamber (202), the second chamber (202) is connected to the third chamber (203), the first chamber (201) and the second chamber (202) are placed within the structural ring (120), the chambers are connected with a support ring (300) detachably connected to the structural ring (120), a part of the third chamber (203) is placed within the structural ring (120) and a part extends to the opening of the installation cavity (110), the protection box (200) includes a first sealing box (210), a second sealing box (220) and a third sealing box (230) having openings, a sealing cover (240) is provided at the opening of the first sealing box (210), the bottom of the first sealing box (210) is inserted into the opening of the second sealing box (220), the bottom of the second sealing box (220) enters the opening of the third sealing box (230), the first sealing box (210) and the sealing cover (240) form the first chamber (201), the second sealing box (220) and the bottom of the first sealing box (210) form the second chamber (202), the third sealing box (230) and the bottom of the second sealing box (220) form the third chamber (203), and the support ring (300) is fixed to the outer wall of the third sealing box (230).

2. The hydrant blanking cap according to claim 1, characterized in that, A first sealing groove (121) is provided on the end face of the structural ring (120), a first sealing ring (122) is embedded in the first sealing groove (121), and the support ring (300) presses the first sealing ring (122) and contacts the structural ring (120).

3. A fire hydrant blank cap according to claim 1, characterized in that, A limiting groove (130) is provided at the bottom of the installation cavity (110), a spring (131) is installed in the limiting groove (130), the sealing cover (240) is provided with a recessed portion recessed towards the first sealing box (210), and the spring (131) extends into the recessed portion and abuts against the sealing cover (240).

4. A fire hydrant blanking cap according to claim 1, characterized in that, A second sealing groove (211) is provided at the opening of the first sealing box (210), a second sealing ring (212) is embedded in the second sealing groove (211), the sealing cover (240) is inserted into the opening of the first sealing box (210), and the sealing cover (240) presses the second sealing ring (212) and contacts the second sealing groove (211).

5. A fire hydrant blanking cap according to claim 1, characterized in that, A third sealing groove (221) is provided at the opening of the second sealing box (220), and a third sealing ring (222) is embedded in the third sealing groove (221). A first insertion ring (213) for inserting into the opening of the second sealing box (220) is provided at the bottom of the first sealing box (210), and the first insertion ring (213) presses the third sealing ring (222) and contacts the third sealing groove (221).

6. A fire hydrant blanking cap according to claim 1, characterized in that, A fourth sealing groove (231) is provided at the opening of the third sealing box (230), and a fourth sealing ring (232) is embedded in the fourth sealing groove (231). A second insertion ring (223) for inserting into the opening of the third sealing box (230) is provided at the bottom of the second sealing box (220), and the second insertion ring (223) presses the fourth sealing ring (232) and contacts the fourth sealing groove (231).

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