High-temperature-resistant fire hydrant casting
By using zirconia ceramic bolt structure and high-temperature resistant sealing gaskets in fire hydrant castings, the problem of adhesion between fire hydrant castings and rotating devices in high-temperature environments is solved, and normal use and avoiding adhesion under high-temperature conditions are achieved.
Patent Information
- Application Number
- CN202421725500.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-22
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-22
AI Technical Summary
The existing fire hydrant castings are prone to stick to the rotating device in high temperature environments, resulting in the shut-off valve bonnet being unable to open.
The zirconia ceramic bolt structure and high-temperature resistant sealing gasket are adopted to ensure that the rotating device and the inner wall of the fire hydrant cover do not come into contact with each other and avoid adhesion.
In high temperature state, the fire hydrant castings can be used normally, and the opening and closing of the rotating device is not affected, avoiding the occurrence of adhesion.
Smart Images
Figure CN222848723U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of fire protection, in particular to a high-temperature resistant fire hydrant casting. Background Art
[0002] In people's daily lives, flame is one of the most important energy sources for human beings. However, if the position and direction of the flame are not properly handled, it is very likely to ignite surrounding objects during use, thus causing a fire. When a fire occurs, the surrounding fire hydrants are the key to extinguishing the fire.
[0003] Existing fire hydrants are usually composed of an integral fire hydrant casting body, a fire hydrant cover that closes the fire hydrant casting body, a check valve cover that controls water flow, and a rotating device that controls the opening and closing of the check valve cover. The check valve cover is raised by rotating the rotating device, so that water flows from the water inlet below the check valve cover into the water hose connected to the water outlet, and the water source is brought into the fire area for fire extinguishing through the water hose energy device.
[0004] Although this type of fire hydrant casting structure can be used to extinguish common fires, if the fire is too large or directly near the fire hydrant, especially for indoor fire hydrants, the threads of the fire hydrant cover and the rotating device are likely to stick together due to the high temperature, making the rotating device unusable. Utility Model Content
[0005] The technical problem to be solved by the utility model is that the existing fire hydrant castings will adhere to the rotating device at high temperature, thereby causing the on-off valve cover to be unable to open.
[0006] In order to solve the above technical problems, the technical solution provided by the utility model is: a high temperature resistant fire hydrant casting, comprising a fire hydrant casting body and a fire hydrant upper cover, the interior of the fire hydrant casting body is provided with a stop valve cover, and a rotating device for controlling the opening and closing of the stop valve cover is provided above the stop valve cover, the rotating device passes through the fire hydrant upper cover, the interior of the fire hydrant upper cover is provided with a zirconia ceramic bolt structure, the zirconia ceramic screw structure passes through the fire hydrant upper cover, the rotating device and the inner wall of the fire hydrant upper cover do not contact each other, and the rotating device passes through the zirconia ceramic bolt structure.
[0007] As an improvement, the rotating device includes a rotating step rod passing through the fire hydrant cover and a turntable located at the thin column end of the rotating step rod, the rotating step rod passing through the fire hydrant cover, the rotating step rod does not contact the inner wall of the fire hydrant cover, the rotating step rod is connected to the fire hydrant cover through a high-temperature resistant sealing gasket, a gasket groove for storing the high-temperature resistant sealing gasket is stored on one side of the fire hydrant cover, a gasket threaded column for fixing the high-temperature resistant sealing gasket is provided inside the gasket groove, and the rotating step rod passes through the gasket threaded column.
[0008] As an improvement, the thick column end of the rotating step rod passes through the upper cover wall of the stop valve cover, and the rotating step rod is connected to the stop valve cover through a pin structure.
[0009] As an improvement, the zirconia ceramic bolt structure includes a zirconia ceramic nut passing through the fire hydrant cover and a zirconia ceramic screw corresponding to the zirconia ceramic nut, the zirconia ceramic nut passing through the bottom surface of the fire hydrant cover, the rotating step rod passing through the zirconia ceramic screw, a screw groove for controlling the rotation height of the zirconia ceramic screw is provided inside the fire hydrant cover, a screw fixing nut for fixing the zirconia ceramic screw is provided on the shaft of the rotating step rod, the rotating step rod passes through the screw fixing nut, and the diameter of the zirconia ceramic screw is not larger than the thick column end of the rotating step rod.
[0010] As an improvement, the turntable and the zirconia ceramic screw are connected to the rotating step rod through body contact, the fixing nut is connected to the rotating step rod through a bolt structure, the turntable is fixed in position with the rotating step rod by the screw, and the zirconia ceramic nut is connected to the nut through hole of the fire hydrant cover through body contact.
[0011] As an improvement, the stop valve cover and the fire hydrant upper cover are connected to the fire hydrant casting body through corrosion-resistant sealing gaskets, the water outlet of the fire hydrant casting body is provided with an opening and closing interface for connecting a water hose, and the opening and closing interface and the fire hydrant upper cover are connected to the fire hydrant casting body through a bolt structure.
[0012] The advantages of the utility model compared with the prior art are: the zirconia ceramic bolt structure of the device has high high and low temperature resistance and high wear resistance, and the rotating step rod does not contact the inner wall of the fire hydrant cover, which ensures that it will not affect the rotation and opening and closing of the rotating device in the high temperature of the fire, and even ensures that the fire hydrant can still be used normally under high temperature conditions without adhesion. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 The utility model is a general structural sectional view of a high temperature resistant fire hydrant casting.
[0014] Figure 2 The utility model discloses an exploded diagram of a zirconium oxide ceramic bolt structure of a high temperature resistant fire hydrant casting.
[0015] Figure 3 The utility model discloses an exploded view of a washer threaded column of a high temperature resistant fire hydrant casting.
[0016] Figure 4 The utility model discloses an exploded view of a high temperature resistant through-and-through valve cover of a fire hydrant casting.
[0017] As shown in the figure: 1. Fire hydrant casting body; 2. Fire hydrant upper cover; 3. Stop valve cover; 31. Corrosion-resistant sealing gasket; 4. Rotating device; 41. Rotating step rod; 42. Turntable; 43. High temperature resistant sealing gasket; 44. Gasket groove; 45. Gasket threaded column; 5. Zirconia ceramic bolt structure; 51. Zirconia ceramic nut; 52. Zirconia ceramic screw; 521. Screw groove; 53. Screw fixing nut; 6. Opening and closing interface. DETAILED DESCRIPTION
[0018] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0019] As the instruction manual Figure 1 , 4 As shown, it includes a fire hydrant casting body 1 and a fire hydrant upper cover 2, wherein the fire hydrant casting body 1 is provided with a check valve cover 3 inside, and a rotating device 4 for controlling the opening and closing of the check valve cover 3 is provided above the check valve cover 3, and the rotating device 4 passes through the fire hydrant upper cover 2, and a zirconia ceramic bolt structure 5 is provided inside the fire hydrant upper cover 2, and the zirconia ceramic screw structure 5 passes through the fire hydrant upper cover 2, and the rotating device 4 does not contact the inner wall of the fire hydrant upper cover 2, and the rotating device 4 passes through the zirconia ceramic bolt structure 5, and the check valve cover 3 and the fire hydrant upper cover 2 are connected by an anti-corrosion sealing gasket 31. The fire hydrant casting body 1 is connected, and the water outlet of the fire hydrant casting body 1 is provided with an opening and closing interface 6 for connecting a water hose. The opening and closing interface 6 and the fire hydrant upper cover 2 are connected to the fire hydrant casting body 1 through a bolt structure. The rotating device 4 includes a rotating step rod 41 passing through the fire hydrant upper cover 2 and a turntable 42 located at the thin column end of the rotating step rod 41. The thick column end of the rotating step rod 41 passes through the upper cover wall of the stop valve cover 3. The rotating step rod 41 is connected to the stop valve cover 3 through a pin structure. The switch of the fire hydrant is controlled by the up and down movement of the fire hydrant upper cover 2 at the water inlet of the fire hydrant casting body 1.
[0020] As the instruction manual Figure 1 , 2As shown in Figure 3, the rotating step rod 41 passes through the fire hydrant cover 2, and the rotating step rod 41 does not contact the inner wall of the fire hydrant cover 2. The rotating step rod 41 is connected to the fire hydrant cover 2 through a high-temperature resistant sealing gasket 43. A gasket groove 44 for storing the high-temperature resistant sealing gasket 43 is provided on one side of the fire hydrant cover 2. A gasket threaded column 45 for fixing the high-temperature resistant sealing gasket 43 is provided inside the gasket groove 44. The rotating step rod 41 passes through the gasket threaded column 45. The zirconia ceramic bolt structure 5 includes a zirconia ceramic nut 51 passing through the fire hydrant cover 2 and a zirconia ceramic screw 52 corresponding to the zirconia ceramic nut 51. The zirconia ceramic nut 51 passes through the bottom surface of the fire hydrant cover 2. The rotating step rod 41 passes through the inner hole of the zirconia ceramic screw 52 (the inner hole of the zirconia ceramic screw 52 is a polygonal hole, and the connecting surface between the rotating step rod 41 and the inner hole of the zirconia ceramic screw 52 is a polygonal column). The fire hydrant cover 2 is provided with a control A screw groove 521 is formed to determine the rotation height of the zirconia ceramic screw 52. A screw fixing nut 53 for fixing the zirconia ceramic screw 52 is provided on the shaft of the rotating step rod 41. The rotating step rod 41 passes through the screw fixing nut 53. The diameter of the zirconia ceramic screw 52 is not larger than the thick column end of the rotating step rod 41. The turntable 42 and the zirconia ceramic screw 52 are both connected to the rotating step rod 41 through body contact. The fixing nut 53 is connected to the rotating step rod 41 through a bolt structure. The turntable 42 is fixed in position with the rotating step rod 41 through a screw. The zirconia ceramic nut 51 is connected to the nut through-hole of the fire hydrant upper cover 2 through the body contact. The up and down rotation movement of the rotating step rod 41 is controlled by the zirconia ceramic bolt structure 5. Since the rotating step rod 41 is connected to the fire hydrant upper cover 2 through a high temperature resistant sealing gasket 43, and the rotating step rod 41 does not contact the inner wall of the fire hydrant upper cover 2, the threaded structure of the rotating step rod 41 is not affected by high temperature.
[0021] During the specific implementation of the utility model, the zirconia ceramic screw 52 is inserted from the thin column end of the rotating step rod 41 and falls to the thick column end of the rotating step rod 41; the washer threaded column 45 is used to screw from the thin column end of the rotating step rod 41 to the rod surface thread of the rotating step rod 41 above the zirconia ceramic screw 52 for fixing; the zirconia ceramic nut 51 is inserted into the nut through hole on the bottom surface of the fire hydrant upper cover 2 using a tool, and the zirconia ceramic screw 52 connected to the rotating step rod 41 is screwed into the zirconia ceramic nut 51 until it passes through the top gasket groove 44 of the fire hydrant upper cover 2; the high temperature resistant sealing gasket 43 is sleeved on the rod surface of the rotating step rod 41, and it is slid into the gasket groove 44, and the washer threaded column 45 is used to pass through the rotating step rod 41, Screw it into the screw hole of the gasket groove 44. At this time, the rotating step rod 41 and the fire hydrant cover 2 do not contact each other; put the turntable 42 on the top of the thin column end of the rotating step rod 41, and screw the screws into the screw holes of the two to fix them; put the corrosion-resistant sealing gasket 31 on the cover surface of the stop valve cover 3, insert the thick column end of the rotating step rod 41 into the column hole at the top of the stop valve cover 3, and screw the pins into the pin holes of the two to fix them; place the corrosion-resistant sealing gasket 31 at the entrance of the fire hydrant cover 2 above the fire hydrant casting body 1, put the fire hydrant cover 2 after assembling the stop valve cover 3 connection structure into the entrance above the fire hydrant casting body 1, and fix it by rotating the threads inside the fire hydrant cover 2; open and close the water outlet interface 6 at the fire hydrant casting body 1.
[0022] When in use, the turntable 42 is rotated, and the rotating step rod 41 is lifted upward under the relative action of the threads of the zirconia ceramic nut 51 and the zirconia ceramic screw 52. Under the pull of the rotating step rod 41, the check valve cover 3 moves upward accordingly. At this time, the check valve cover 3 and the water inlet of the fire hydrant casting body 1 are no longer in a sealed state, and the water flows to the outlet along the gap; when closed, the turntable 42 is reversed to make the check valve cover 3 seal the water inlet of the fire hydrant casting body 1 again; when encountering high temperature, because the zirconia ceramic nut 51 and the zirconia ceramic screw 52 of the zirconia ceramic screw structure 5 are both high-temperature resistant materials, the rotation and elevation of the rotating step rod 41 is not affected by the adhesion of the threads, and the rotating step rod 41 and the inner wall of the fire hydrant cover 2 do not contact each other, and the high-temperature resistant sealing gasket 43 connecting the rotating step rod 41 and the fire hydrant cover 2 also has high-temperature resistant characteristics, which avoids the occurrence of the rotating step rod 41 and the fire hydrant cover 2 Adhesion phenomenon.
[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A high temperature resistant fire hydrant casting, comprising a fire hydrant casting body (1) and a fire hydrant upper cover (2), wherein a check valve cover (3) is provided inside the fire hydrant casting body (1), and a rotating device (4) for controlling the opening and closing of the check valve cover (3) is provided above the check valve cover (3), and the rotating device (4) passes through the fire hydrant upper cover (2), characterized in that: A zirconia ceramic bolt structure (5) is provided inside the fire hydrant upper cover (2), and the zirconia ceramic bolt structure (5) passes through the fire hydrant upper cover (2). The rotating device (4) and the inner wall of the fire hydrant upper cover (2) do not contact each other, and the rotating device (4) passes through the zirconia ceramic bolt structure (5).
2. A high temperature resistant fire hydrant casting according to claim 1, characterized in that: The rotating device (4) comprises a rotating step rod (41) passing through the fire hydrant upper cover (2) and a rotating disk (42) located at the thin column end of the rotating step rod (41), the rotating step rod (41) passing through the fire hydrant upper cover (2), the rotating step rod (41) not contacting the inner wall of the fire hydrant upper cover (2), the rotating step rod (41) being connected to the fire hydrant upper cover (2) via a high temperature resistant sealing gasket (43), a gasket groove (44) for storing the high temperature resistant sealing gasket (43) is provided on one side of the fire hydrant upper cover (2), a gasket threaded column (45) for fixing the high temperature resistant sealing gasket (43) is provided inside the gasket groove (44), and the rotating step rod (41) passes through the gasket threaded column (45).
3. A high temperature resistant fire hydrant casting according to claim 2, characterized in that: The thick column end of the rotating step rod (41) passes through the upper cover wall of the on-off valve cover (3), and the rotating step rod (41) is connected to the on-off valve cover (3) via a pin structure.
4. A high temperature resistant fire hydrant casting according to claim 2, characterized in that: The zirconia ceramic bolt structure (5) comprises a zirconia ceramic nut (51) passing through the fire hydrant upper cover (2) and a zirconia ceramic screw (52) corresponding to the zirconia ceramic nut (51); the zirconia ceramic nut (51) passes through the bottom surface of the fire hydrant upper cover (2); the rotating step rod (41) passes through the zirconia ceramic screw (52); a screw groove (521) for controlling the rotation height of the zirconia ceramic screw (52) is provided inside the fire hydrant upper cover (2); a screw fixing nut (53) for fixing the zirconia ceramic screw (52) is provided on the shaft of the rotating step rod (41); the rotating step rod (41) passes through the screw fixing nut (53); and the diameter of the zirconia ceramic screw (52) is not greater than the thick column end of the rotating step rod (41).
5. A high temperature resistant fire hydrant casting according to claim 4, characterized in that: The rotating disk (42) and the zirconia ceramic screw (52) are both connected to the rotating step rod (41) through body contact, the fixing nut (53) is connected to the rotating step rod (41) through a bolt structure, the rotating disk (42) is fixed in position with the rotating step rod (41) through the screw, and the zirconia ceramic nut (51) is connected to the nut through hole of the fire hydrant upper cover (2) through body contact.
6. A high temperature resistant fire hydrant casting according to claim 1, characterized in that: The on-off valve cover (3) and the fire hydrant upper cover (2) are both connected to the fire hydrant casting body (1) via a corrosion-resistant sealing gasket (31); the water outlet of the fire hydrant casting body (1) is provided with an opening and closing interface (6) for connecting a water hose; the opening and closing interface (6) and the fire hydrant upper cover (2) are both connected to the fire hydrant casting body (1) via a bolt structure.