Connecting structure of fire hydrant
By improving the fire hydrant connection structure and adopting an I-shaped plug and sealing ring design, the problems of cumbersome fire hydrant connection and insufficient sealing have been solved, realizing a fast and reliable connection between the fire hydrant and the water pipe, and improving fire fighting efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- FUJIAN SHUNYIDA CONSTRUCTION ENGINEERING CO LTD
- Filing Date
- 2025-06-08
- Publication Date
- 2026-05-08
AI Technical Summary
The existing fire hydrant connection structure is cumbersome, and the connection sealing and stability are insufficient, which affects the fire fighting efficiency.
The system employs a quick-connection positioning mechanism using a connecting block on the outer surface of the outlet pipe and an I-shaped insert block on the connecting pipe. Combined with a double-seal design of a sealing ring and an anti-slip strip, it achieves convenient fixation and sealing through a snap ring structure.
It enables rapid connection between fire hydrants and water pipes, ensuring sealing and stability, meeting emergency firefighting needs, and improving operational efficiency.
Smart Images
Figure CN224213436U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fire hydrant technology, and in particular to a connection structure for a fire hydrant. Background Technology
[0002] In firefighting operations, fire hydrants, as crucial water supply equipment, directly impact the timing of firefighting efforts due to the efficiency of their connection with fire hoses. With urban development, the complexity of fire hazards and the difficulty of firefighting are constantly increasing, placing higher demands on the rapid response capabilities of firefighting equipment. Fire hydrant connection structures need to achieve rapid and reliable installation in emergency situations to ensure timely delivery of firefighting water to the fire scene. However, existing fire hydrant connection structures mostly have significant drawbacks: firstly, the connection methods are cumbersome, requiring firefighters to spend considerable time aligning and securing them in emergency situations, making it difficult to meet the urgent time requirements of firefighting; secondly, the sealing and stability of the connections are insufficient, easily leading to leaks during water delivery, affecting the normal supply of firefighting water, and potentially causing loosening at the connection points due to insecure connections, further delaying firefighting. These problems, to some extent, affect firefighting efficiency, reduce the practicality of fire hydrants, and fail to fully meet the actual needs of firefighting operations. Therefore, it is necessary to design a fire hydrant connection structure to solve these problems. Utility Model Content
[0003] The main purpose of this utility model is to provide a connection structure for fire hydrants, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A fire hydrant connection structure includes a fire hydrant body and a connecting flange. The lower end of the fire hydrant body is fixedly connected to a connecting pipe through the connecting flange. A connecting device is fixedly connected to the right side of the outer surface of the fire hydrant body. A docking device is provided at the right end of the connecting device. A fixing device is sleeved on the right side of the outer surface of the connecting device.
[0006] The connecting device includes a water outlet pipe. Connecting blocks are fixedly connected to the upper and lower parts of the outer surface of the water outlet pipe. The upper left part of the upper connecting block and the lower left part of the lower connecting block are both provided with fixing grooves. The right end of the connecting blocks is provided with slots. The right end of the water outlet pipe is provided with a sealing groove. A sealing ring is placed in the sealing groove. The water outlet pipe is fixedly connected to the outer surface of the fire hydrant body.
[0007] Preferably, the docking device includes a connecting pipe, and the upper and lower parts of the outer surface of the connecting pipe are fixedly connected with inserts. The upper left part of the upper insert and the lower left part of the lower insert are provided with multiple anti-slip grooves. The connecting pipe is closely attached to the right end of the water outlet pipe.
[0008] Preferably, the fixing device includes a lower retaining ring and an upper retaining ring. A fixing rod is inserted and fixedly connected to the front end of the lower retaining ring. Side blocks are fixedly connected to the left and right sides of the outer surface of the fixing rod. A movable rod is inserted and movably connected between the upper left and upper right ends of the two side blocks. A pressure groove is opened in the middle of the lower surface of the upper retaining ring and the middle of the upper surface of the lower retaining ring. Multiple anti-slip strips are fixedly connected in the pressure groove. A docking block is fixedly connected to one end of the lower retaining ring. A docking groove is opened at one end of the upper retaining ring. A first insertion hole is opened in the right front end of the upper retaining ring and the upper front end of the docking block. An insertion rod is inserted into the first insertion hole. The lower retaining ring and the upper retaining ring are sleeved and installed on the outside of the water outlet pipe.
[0009] Preferably, a bottom-top cap is fixedly connected to the upper end of the fire hydrant body, a valve stem is threadedly connected to the middle of the upper end of the bottom-top cap, and a handle is fixedly connected to the upper end of the valve stem.
[0010] Preferably, the inserts are all I-shaped and each corresponds to a slot.
[0011] Preferably, the movable rod passes through both side blocks, and the upper retaining ring is rotatably connected to the lower retaining ring via the movable rod. The insertion rod is simultaneously inserted into the first insertion hole of the upper retaining ring and the docking block.
[0012] Preferably, the lower retaining ring and the upper retaining ring are sleeved together to form a ring structure, which surrounds the right side of the outer surface of the water outlet pipe, and the pressure groove is correspondingly pressed into the anti-slip groove.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. In this utility model, the slot of the connecting block on the outer surface of the outlet pipe and the I-shaped plug on the outer surface of the connecting pipe are quickly inserted and positioned, avoiding the tedious operation of repeated alignment in the traditional connection. The lower and upper retaining rings of the fixing device are conveniently opened and closed and fixed through the cooperation of the movable rod and the plug rod. The entire connection process does not require tools and is simple and fast to operate. It effectively solves the problem of the tedious and time-consuming connection of the existing fire hydrant, ensuring that firefighters can quickly complete the connection of fire water pipes and fire hydrants in emergency situations, meeting the urgent time requirements of fire fighting.
[0015] 2. In this utility model, the sealing ring in the sealing groove at the right end of the water outlet pipe fits tightly with the end face of the connecting pipe to form a preliminary seal. The anti-slip strip in the pressure groove of the fixing device is embedded in the anti-slip groove of the connecting pipe plug block. The interlocking further enhances the sealing effect and connection stability. The double sealing design ensures that there is no water leakage at the connection point. The anti-slip structure prevents the connection from loosening, effectively solving the problem of insufficient sealing and stability of existing fire hydrant connections. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of a fire hydrant connection structure according to the present invention;
[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the connecting device of the fire hydrant connection structure according to this utility model;
[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the docking device for the connection structure of a fire hydrant according to the present invention;
[0019] Figure 4 This is a schematic diagram of the fixing device of the connection structure of a fire hydrant in the open state according to the present invention;
[0020] Figure 5 This is an enlarged structural diagram showing the details of point A in the connection structure of a fire hydrant according to this utility model.
[0021] In the diagram: 1. Bottom cap; 2. Valve stem; 3. Handle; 4. Fire hydrant body; 5. Connecting flange; 6. Connecting pipe; 7. Connecting device; 8. Butt joint device; 9. Fixing device; 71. Water outlet pipe; 72. Connecting block; 73. Fixing groove; 74. Slot; 75. Sealing groove; 76. Sealing ring; 81. Butt joint pipe; 82. Insert block; 83. Anti-slip groove; 91. Lower retaining ring; 92. Pressure groove; 93. Anti-slip strip; 94. Butt joint block; 95. Insert rod; 96. First insertion hole; 97. Side block; 98. Fixing rod; 99. Movable rod; 910. Upper retaining ring; 911. Butt joint groove. Detailed Implementation
[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0025] Please see Figure 1-5 This utility model provides a technical solution:
[0026] A fire hydrant connection structure includes a fire hydrant body 4 and a connecting flange 5. The lower end of the fire hydrant body 4 is fixedly connected to a connecting pipe 6 through the connecting flange 5. A connecting device 7 is fixedly connected to the right side of the outer surface of the fire hydrant body 4. A docking device 8 is provided at the right end of the connecting device 7. A fixing device 9 is sleeved on the right side of the outer surface of the connecting device 7.
[0027] The upper end of the fire hydrant body 4 is fixedly connected to a bottom-top cap 1, and the upper middle part of the bottom-top cap 1 is threadedly connected to a valve stem 2. The upper end of the valve stem 2 is fixedly connected to a handle 3.
[0028] In this embodiment, the connecting device 7 includes a water outlet pipe 71. Connecting blocks 72 are fixedly connected to the upper and lower parts of the outer surface of the water outlet pipe 71. Fixing grooves 73 are formed on the upper left side of the upper connecting block 72 and the lower left side of the lower connecting block 72. A slot 74 is formed on the right end of each connecting block 72. A sealing groove 75 is formed on the right end of the water outlet pipe 71, and a sealing ring 76 is placed inside the sealing groove 75. The water outlet pipe 71 is fixedly connected to the outer surface of the fire hydrant body 4. The connecting device 7 includes a water outlet pipe 71, and the upper part of the outer surface of the water outlet pipe 71... Connecting blocks 72 are fixedly connected to the lower part of the outer surface. The upper left end of the upper connecting block 72 and the lower left end of the lower connecting block 72 both have fixing grooves 73. A slot 74 is opened at the right end of each connecting block 72. A sealing groove 75 is opened at the right end of the water outlet pipe 71, and a sealing ring 76 is placed inside the sealing groove 75. The water outlet pipe 71 is fixedly connected to the outer surface of the fire hydrant body 4. The fixing device 9 includes a lower retaining ring 91 and an upper retaining ring 910. A fixing rod 98 is fixedly connected to the front end of the lower retaining ring 91. The left side of the outer surface of the fixing rod 98 is connected to the outer surface of the fire hydrant body 4. Side blocks 97 are fixedly connected to the right side of both sides 97. A movable rod 99 is movably connected between the upper left and upper right ends of the two side blocks 97. A pressure groove 92 is formed in the middle of the lower surface of the upper retaining ring 910 and the middle of the upper surface of the lower retaining ring 91. Multiple anti-slip strips 93 are fixedly connected within the pressure groove 92. A mating block 94 is fixedly connected to one end of the lower retaining ring 91. A mating groove 911 is formed at one end of the upper retaining ring 910. A first insertion hole 96 is formed on the right front end of the upper retaining ring 910 and the upper front end of the mating block 94. A [missing information - likely a device or component] is inserted into the first insertion hole 96. There is an insertion rod 95, and the lower retaining ring 91 and the upper retaining ring 910 are sleeved and installed on the outside of the water outlet pipe 71. The insertion blocks 82 are all of I-shaped structure and correspond one-to-one in the slot 74. The movable rod 99 passes through the two side blocks 97, and the upper retaining ring 910 is rotatably connected to the lower retaining ring 91 through the movable rod 99. The insertion rod 95 is inserted into the first insertion hole 96 of the upper retaining ring 910 and the docking block 94. After the lower retaining ring 91 and the upper retaining ring 910 are sleeved, they form a ring structure that surrounds the right side of the outer surface of the water outlet pipe 71, and the pressure groove 92 is correspondingly pressed into the anti-slip groove 83.
[0029] Through the above scheme: the outlet pipe 71 is fixed to the outer surface of the fire hydrant body 4, and the sealing ring 76 in the sealing groove 75 at its right end can fit tightly with the end face of the connecting pipe 81. The slot 74 of the outer surface connecting block 72 and the I-shaped insert 82 on the outer surface of the connecting pipe 81 are quickly inserted to achieve initial positioning, avoiding the trouble of repeated alignment in traditional connections. The lower retaining ring 91 and the upper retaining ring 910 of the fixing device 9 are rotatably connected to the side block 97 on the fixing rod 98 through the movable rod 99, which can be easily opened and closed and fitted onto the right side of the outer surface of the outlet pipe 71. After the mating block 94 of the lower retaining ring 91 is inserted into the mating groove 911 of the upper retaining ring 910, the insert rod 95 is inserted into the first insert hole 96 to complete the fixation. At this time, the anti-slip strip 93 in the pressure groove 92 is embedded. The anti-shift groove 83 of the connector 81 and plug 82 prevents displacement at the connection point through interlocking. The entire connection process is tool-free, simple and quick to operate. This structure effectively solves the defects of the existing fire hydrant and fire water pipe connection. The cooperation between the I-shaped plug 82 and the slot 74 achieves quick positioning and insertion, shortening the connection time. The double sealing design of the sealing ring 76 and the anti-shift strip 93 ensures the sealing of the connection and prevents water leakage. The rotatable snap ring structure is fixed by the plug rod 95, making installation and disassembly more convenient and efficient. The interlocking of the anti-shift groove 83 and the anti-shift strip 93 enhances the stability of the connection, effectively improving the operating efficiency of firefighters and meeting the need for quick connection during fire fighting.
[0030] It should be noted that this utility model is a connection structure for a fire hydrant. First, the fire hydrant body 4 is fixedly connected to the connecting pipe 6 through the connecting flange 5 at the lower end, forming a basic water flow channel. During operation, rotating the handle 3 drives the valve stem 2 to rotate inside the large cap 1 at the bottom, thereby opening or closing the water passage inside the fire hydrant body 4. When connecting external water pipes, the connecting pipe 81 of the connecting device 8 needs to be connected to the outlet pipe 71 of the connecting device 7. At this time, the I-shaped inserts 82 on the outer surface of the connecting pipe 81 need to be inserted one by one into the slots 74 of the connecting blocks 72 on the outer surface of the outlet pipe 71. The initial positioning is achieved through the cooperation of the inserts 82 and the slots 74. At the same time, the sealing ring 76 in the sealing groove 75 at the right end of the outlet pipe 71 will be tightly attached to the end face of the connecting pipe 81 to form a preliminary seal. After positioning, the connection part needs to be reinforced by the fixing device 9. The lower retaining ring 91 and the upper retaining ring 910 of the fixing device 9 are sleeved on the outside of the outlet pipe 71. On the right side of the surface, the mating block 94 of the lower retaining ring 91 is inserted into the mating groove 911 of the upper retaining ring 910, and then the retaining ring is initially fixed by inserting the rod 95 into the first insertion hole 96. Since the lower retaining ring 91 and the upper retaining ring 910 are rotatably connected to the side block 97 on the fixed rod 98 through the movable rod 99, they can be flexibly opened and closed to adapt to installation requirements. After the lower retaining ring 91 and the upper retaining ring 910 are sleeved to form a ring structure, the pressure groove 92 will press against the anti-shift groove 83 of the insert block 82 of the connecting pipe 81. At this time, the anti-shift strip 93 in the pressure groove 92 is embedded in the anti-shift groove 83. The interlocking of the two further prevents the connecting pipe 81 from shifting, and at the same time enhances the sealing effect. In this way, through the coordinated action of the connecting device 7, the mating device 8 and the fixing device 9, a stable connection and reliable sealing between the fire hydrant and the external water pipe are achieved, ensuring that the water flow can be smoothly delivered to the connecting pipe 81 through the fire hydrant body 4 and the connecting pipe 6 during fire fighting, meeting the needs of fire fighting operations.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A connection structure for a fire hydrant, comprising a fire hydrant body (4) and a connecting flange (5), characterized in that: The lower end of the fire hydrant body (4) is fixedly connected to a connecting pipe (6) via a connecting flange (5). A connecting device (7) is fixedly connected to the right side of the outer surface of the fire hydrant body (4). A docking device (8) is provided at the right end of the connecting device (7). A fixing device (9) is sleeved on the right side of the outer surface of the connecting device (7). The connecting device (7) includes a water outlet pipe (71). A connecting block (72) is fixedly connected to the upper part and the lower part of the outer surface of the water outlet pipe (71). A fixing groove (73) is opened on the upper left part of the upper connecting block (72) and the lower left part of the lower connecting block (72). A slot (74) is opened on the right end of the connecting block (72). A sealing groove (75) is opened on the right end of the water outlet pipe (71). A sealing ring (76) is placed in the sealing groove (75). The water outlet pipe (71) is fixedly connected to the outer surface of the fire hydrant body (4).
2. The connection structure of a fire hydrant according to claim 1, characterized in that: The docking device (8) includes a connecting pipe (81). The upper part and the lower part of the outer surface of the connecting pipe (81) are fixedly connected with a plug (82). The upper left part of the upper plug (82) and the lower left part of the lower plug (82) are provided with multiple anti-slip grooves (83). The connecting pipe (81) is closely attached to the right end of the water outlet pipe (71).
3. The connection structure of a fire hydrant according to claim 1, characterized in that: The fixing device (9) includes a lower retaining ring (91) and an upper retaining ring (910). A fixing rod (98) is inserted and fixedly connected to the front end of the lower retaining ring (91). Side blocks (97) are fixedly connected to the left and right sides of the outer surface of the fixing rod (98). A movable rod (99) is inserted and movably connected between the upper left and upper right ends of the two side blocks (97). A pressure groove (92) is opened in the middle of the lower surface of the upper retaining ring (910) and the middle of the upper surface of the lower retaining ring (91). Multiple anti-slip strips (93) are fixedly connected inside the pressure groove (92). One end of the lower retaining ring (91) is fixedly connected to a docking block (94). One end of the upper retaining ring (910) has a docking groove (911). The front right part of the upper retaining ring (910) and the front upper part of the docking block (94) both have a first insertion hole (96). A plug rod (95) is inserted into the first insertion hole (96). The lower retaining ring (91) and the upper retaining ring (910) are sleeved and installed on the outside of the water outlet pipe (71).
4. The connection structure of a fire hydrant according to claim 1, characterized in that: The upper end of the fire hydrant body (4) is fixedly connected to a bottom top cap (1), and the middle of the upper end of the bottom top cap (1) is threadedly connected to a valve stem (2), and the upper end of the valve stem (2) is fixedly connected to a handle (3).
5. The connection structure of a fire hydrant according to claim 2, characterized in that: The inserts (82) are all in the shape of an I-beam and are located one by one in the slots (74).
6. The connection structure of a fire hydrant according to claim 3, characterized in that: The movable rod (99) passes through the two side blocks (97), and the upper retaining ring (910) is rotatably connected to the lower retaining ring (91) through the movable rod (99). The insertion rod (95) is simultaneously inserted into the first insertion hole (96) of the upper retaining ring (910) and the docking block (94).
7. The connection structure of a fire hydrant according to claim 3, characterized in that: The lower retaining ring (91) and the upper retaining ring (910) are fitted together to form a ring structure, which surrounds the right side of the outer surface of the water outlet pipe (71), and the pressure groove (92) is pressed into the anti-slip groove (83).