Outdoor fire hydrant

Abstract

The utility model discloses an outdoor fire hydrant which comprises a lower hydrant body, an upper hydrant body positioned at the upper end of the lower hydrant body, a turntable bearing, a sealing ring and a connecting sleeve, an external thread is arranged at the upper end of the outer wall of the lower hydrant body; an inner ring of the turntable bearing is fixedly connected with the lower portion of the outer wall of the upper hydrant body, the inner diameter of the connecting sleeve is larger than the outer diameter of the upper hydrant body, the upper end of the connecting sleeve is fixedly connected with the outer ring of the turntable bearing, a thickening portion is arranged at the lower end of the inner wall of the connecting sleeve, and internal threads matched with the external threads are arranged on the thickening portion. The sealing ring is sleeved with the connecting sleeve and located at the upper end of the thickening part. The connecting sleeve has the advantages that the innovative connecting structure design is adopted, the core lies in the connecting mode between the upper hydrant body and the lower hydrant body, the traditional complex connecting means is abandoned, the connecting sleeve scheme which is simpler, more convenient and more efficient is adopted, and the connecting sleeve is particularly suitable for application scenes needing on-site rapid assembly.

Description

Technical Field

[0001] This utility model relates to the field of fire protection equipment technology, and in particular to an outdoor fire hydrant. Background Technology

[0002] Outdoor fire hydrants are fixed fire-fighting devices installed on city streets, exteriors of buildings, or in industrial sites to provide water for firefighting. They are typically made of cast iron or steel, offering durability and corrosion resistance to withstand outdoor environments. Fire hydrants connect to underground water supply systems, drawing water directly from sources such as municipal water networks or dedicated fire pools via high-pressure pipes. Their design includes one or more outlets at the top for connecting fire hoses to firefighters. Additionally, fire hydrants are equipped with control valves that allow firefighters to quickly open or close the water flow. Outdoor fire hydrants are a vital component of urban and community fire safety infrastructure, playing a crucial role in the rapid control and suppression of fires.

[0003] Chinese utility model patent publication number CN221168015U discloses an outdoor fire hydrant, comprising a lower hydrant body buried underground with its top extending above the ground, an upper hydrant body with its bottom end inserted into an expanded cavity at the top of the lower hydrant body, a retaining spring detachably mounted on the upper hydrant body, and a locking structure mounted on the top of the lower hydrant body and abutting against the retaining spring. This utility model ensures that the upper hydrant body can rotate freely relative to the lower hydrant body, guaranteeing that each hydrant outlet is in the optimal position. However, it uses bolts and other connecting parts to lock the retaining spring, which are prone to loss during transport and easy to fall off during installation. Furthermore, the tightening force of each connecting part relies on manual adjustment during installation, making it difficult to maintain consistent tightening force, resulting in insufficient or excessive tightening. Additionally, installing multiple connecting parts is time-consuming and labor-intensive. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide an outdoor fire hydrant.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is as follows:

[0006] An outdoor fire hydrant includes a lower hydrant body, an upper hydrant body located at the upper end of the lower hydrant body, a rotary bearing, a sealing ring, and a connecting sleeve; the upper end of the outer wall of the lower hydrant body is provided with an external thread; the inner ring of the rotary bearing is fixedly connected to the lower part of the outer wall of the upper hydrant body; the inner diameter of the connecting sleeve is larger than the outer diameter of the upper hydrant body; the upper end of the connecting sleeve is fixedly connected to the outer ring of the rotary bearing; the lower end of the inner wall of the connecting sleeve has a thickened portion, and the thickened portion is provided with an internal thread matching the external thread; the sealing ring is fitted inside the connecting sleeve and located at the upper end of the thickened portion.

[0007] Preferably, the outer wall of the connecting sleeve is provided with a protrusion, and the protrusion is provided with an insertion hole.

[0008] Preferably, the outer diameter of the sealing ring is larger than the inner diameter of the thickened portion and smaller than the inner diameter of the non-thickened portion of the connecting sleeve.

[0009] Preferably, it also includes a corrugated protective sleeve covering the connecting sleeve.

[0010] Preferably, the sealing ring is a square sealing ring.

[0011] The above technical solution has the following advantages:

[0012] (1) This utility model adopts an innovative connection structure design, the core of which lies in the connection method between the upper and lower bolt bodies. It abandons the traditional complex connection methods and adopts a simpler and more efficient connection sleeve solution. The connection sleeve, as a transition component between the upper and lower bolt bodies, is pre-placed on the upper bolt body. When the two parts need to be combined, simply align the lower bolt body with the upper bolt body, and then rotate and tighten the connection sleeve to complete the entire connection process. No additional bolts or other connecting parts are required, which greatly simplifies the operation process and is particularly suitable for application scenarios that require rapid on-site assembly.

[0013] (2) This utility model not only significantly improves connection efficiency and reduces assembly time, but also reduces the risk of connection failure due to lost or damaged parts. In addition, the design also takes into account connection strength and sealing performance, ensuring stability and reliability even in high-pressure or harsh environments, and preventing easy loosening or leakage. Attached Figure Description

[0014] Figure 1 This is a front view of the first embodiment of the present invention, in which a partial section has been made;

[0015] Figure 2 for Figure 1 Enlarged view of section A;

[0016] Figure 3 For Figure 1 A three-dimensional image;

[0017] Figure 4 for Figure 1 A three-dimensional view of the middle and lower embolus;

[0018] Figure 5 for Figure 1 A three-dimensional enlarged view of the connecting sleeve, with partial cross-sections shown;

[0019] Figure 6 for Figure 1 Enlarged 3D view of the central sealing ring;

[0020] Figure 7 This is a perspective view of the second embodiment of the present utility model.

[0021] In the picture:

[0022] 1-Lower bolt body, 2-Upper bolt body, 3-Switch bearing, 4-Sealing ring, 5-Connecting sleeve, 6-External thread, 7-Thickened part, 8-Internal thread, 9-Protrusion, 10-Insertion hole, 11-Corrugated protective sleeve. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. It should be noted that these descriptions are for the purpose of aiding understanding of this utility model, but do not constitute a limitation thereof. Furthermore, the technical features involved in the various embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0024] Example 1

[0025] As shown in the attached figure, an outdoor fire hydrant includes a lower hydrant body 1, an upper hydrant body 2 located at the upper end of the lower hydrant body 1, a turntable bearing 3, a sealing ring 4, and a connecting sleeve 5; the upper end of the outer wall of the lower hydrant body 1 is provided with an external thread 6; the inner ring of the turntable bearing 3 is fixedly connected to the lower part of the outer wall of the upper hydrant body 2, the inner diameter of the connecting sleeve 5 is larger than the outer diameter of the upper hydrant body 2, the upper end of the connecting sleeve 5 is fixedly connected to the outer ring of the turntable bearing 3, the lower end of the inner wall of the connecting sleeve 5 has a thickened part 7, and the thickened part 7 is provided with an internal thread 8 that matches the external thread 6; the sealing ring 4 is fitted inside the connecting sleeve 5 and is located at the upper end of the thickened part 7.

[0026] As a further improvement to this embodiment, a protrusion 9 is provided on the outer wall of the connecting sleeve 5, and an insertion hole 10 is provided on the protrusion 9. During assembly and disassembly, a wrench is inserted into the insertion hole 10 to rotate the connecting sleeve 5. Obviously, a large-sized pipe wrench can also be used to rotate the connecting sleeve 5. The number of protrusions 9 is at least one, but can also be two symmetrically arranged, or three or more evenly distributed in a ring.

[0027] As a preferred embodiment, the outer diameter of the sealing ring 4 is larger than the inner diameter of the thickened portion 7, but smaller than the inner diameter of the non-thickened portion 7 of the connecting sleeve 5. The advantage of this design is that the sealing ring 4 can be pre-fitted into the connecting sleeve 5, making it less prone to loss, and the inner wall of the connecting sleeve 5 can relatively limit the position of the sealing ring 4, ensuring accurate sealing and reliable sealing.

[0028] As a preferred technical solution in this embodiment, the sealing ring 4 is a square sealing ring, but obviously it can also be an O-ring or a U-ring, etc.

[0029] Example 2

[0030] As shown in the attached diagram, an outdoor fire hydrant further includes a corrugated protective sleeve 11 covering the connecting sleeve 5. The corrugated protective sleeve 11 can be a rubber sleeve with a steel wire skeleton to protect the turntable bearing 3 and the connecting sleeve 5, preventing rainwater from wetting the turntable bearing 3 and the connecting sleeve 5, ensuring that the turntable bearing 3 and the connecting sleeve 5 do not rust during long-term use, and ensuring good disassembly and maintenance performance. The rest is basically the same as in Embodiment 1.

[0031] The connecting sleeve 5 of this utility model serves as a connecting component between the upper bolt body 2 and the lower bolt body 1. It is pre-positioned on the upper bolt body 2 via a turntable bearing 3. When the two parts need to be joined, simply align the lower bolt body 1 with the upper bolt body 2, and then rotate and tighten the connecting sleeve 5 to complete the entire connection process. No additional bolts or other connecting parts are required, which greatly simplifies the operation process.

[0032] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. An outdoor fire hydrant, comprising a lower hydrant body (1), an upper hydrant body (2) located at the upper end of the lower hydrant body (1), a turntable bearing (3), a sealing ring (4), and a connecting sleeve (5); characterized in that: The lower bolt (1) has an external thread (6) at the upper end of its outer wall; the inner ring of the turntable bearing (3) is fixedly connected to the lower part of the outer wall of the upper bolt (2); the inner diameter of the connecting sleeve (5) is larger than the outer diameter of the upper bolt (2); the upper end of the connecting sleeve (5) is fixedly connected to the outer ring of the turntable bearing (3); the lower end of the inner wall of the connecting sleeve (5) has a thickened part (7); the thickened part (7) has an internal thread (8) that matches the external thread (6); the sealing ring (4) is fitted inside the connecting sleeve (5) and is located at the upper end of the thickened part (7).

2. The outdoor fire hydrant according to claim 1, characterized in that: The outer wall of the connecting sleeve (5) is provided with a protrusion (9), and the protrusion (9) is provided with a socket (10).

3. The outdoor fire hydrant according to claim 1, characterized in that: The outer diameter of the sealing ring (4) is larger than the inner diameter of the thickened part (7) and smaller than the inner diameter of the non-thickened part (7) of the connecting sleeve (5).

4. The outdoor fire hydrant according to claim 1, characterized in that: It also includes a corrugated protective sleeve (11) that covers the connecting sleeve (5).

5. The outdoor fire hydrant according to claim 1, characterized in that: The sealing ring (4) is a square sealing ring.

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