Fireproof valve
By using fireproof valves made of galvanized steel sheets or stainless steel square tubes, combined with a stepped closure structure and an expansion-type sealing strip, the problems of deformation and air leakage of fireproof valves in high-temperature environments are solved, achieving effective smoke and fire blocking in fires.
Patent Information
- Application Number
- CN202520599670.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-01
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-04-01
AI Technical Summary
Existing fire valves are prone to deformation and excessive air leakage in high-temperature environments. Furthermore, they can undergo irreversible deformation or metal fatigue cracking after repeated opening and closing, resulting in insufficient fire resistance.
The valve body, blades, and baffles are made of galvanized sheet or stainless steel square tubing, combined with a stepped closure structure, expansion sealing strip, and spring plate design to enhance structural robustness and sealing performance, and reduce air leakage.
In a fire environment, it reduces air leakage, significantly blocks smoke and fire, effectively prevents the spread of smoke, protects lives, and prevents the spread of fire.
Smart Images
Figure CN223794681U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to ventilation and fire prevention equipment for building ventilation and smoke control systems. Background Technology
[0002] Existing fire valves suffer from two main problems: first, the galvanized or stainless steel blades expand and deform under high temperatures, causing excessive air leakage; second, the galvanized or stainless steel blades undergo irreversible deformation or metal fatigue cracking after repeated opening and closing impacts, resulting in the existing fire valves failing to meet the required risk resistance capabilities. Utility Model Content
[0003] To overcome the shortcomings of the existing technology, this utility model discloses a fireproof valve that can increase fireproof function, is sturdy and durable, and protects the lives of personnel.
[0004] The technical solution adopted in this utility model is a fireproof valve, mainly composed of a valve body, a flange, blades, and baffles. The valve body is made of metal sheet, with one sheet bent to form a square frame. Flanges are connected to both ends of the valve body. The flange is composed of a first square tube, with two first square tubes fixed to the left and right sides of the valve body. The blades are composed of a second square tube with a rectangular frame structure and a fireproof plate. Two fireproof plates are fixed to both sides of the second square tube with bolts. The fireproof plates are non-combustible inorganic composite boards. A blade shaft is installed in the middle of the wide side of the second square tube with the blade shaft. Bearings are installed at both ends of the blade shaft. Spring plates are set on the flange, and bearings are installed on the flange. Several blades are connected to a connecting rod at the same end, and one of the blade shafts at the other end is connected to a temperature control switch. The temperature control switch is installed outside the valve body. Baffles are set on the upper and lower sides of the valve body, and the baffles are third square tubes.
[0005] Furthermore, the blades and blades or baffles form a stepped closure, the blades and blades form a two-step closure, and the blades and baffles form a single-step closure.
[0006] Furthermore, an expansion-type sealing strip is provided between the blade and the upper and lower frame of the valve body, and the expansion-type sealing strip is adhered to the valve body.
[0007] The square tube is made of galvanized steel square tube or stainless steel square tube.
[0008] The beneficial effects of this utility model are that it replaces the sheet metal in the flat strips, baffles, and blades with square tubing, resulting in a robust and durable structure with minimal deformation and air leakage in fire conditions. It significantly improves smoke and fire resistance, effectively preventing the disorderly diffusion of high-temperature smoke and protecting people's lives during building fires, thus preventing the spread of fire. The use of stepped closure, expansion sealing strips, and spring sheets, among other methods, enhances the sealing performance of this utility model, thereby reducing air leakage. Attached Figure Description
[0009] Figure 1This is a schematic diagram of the structure of this utility model. Figure 2 This is a schematic diagram of the cross-sectional structure of the blade. Figure 3 This is a schematic diagram of the cross-sectional structure of the flat assembly. Figure 4 This is a schematic diagram of the closed cross-section structure of the blade and the baffle. Figure 5 This is a schematic diagram of the blade and its closed cross-section structure. Figure 6 This is a schematic diagram of the second square tube structure of the blade. Figure 7 This is a schematic diagram of the closed side structure of this utility model. Detailed Implementation
[0010] Example 1, such as Figure 1 , 2 As shown in Figures 3, 6, and 7, a fireproof valve mainly consists of a valve body 1, a blade 2, a vane, and a stop bar 3. The valve body 1 is made of metal sheet, with one sheet bent and welded into a square frame. Both ends of the valve body 1 are connected to a common plate flange or angle iron flange. The blade 2 is made of a first square tube, with two blades 2 fixed to the left and right sides of the valve body 1. The vane is composed of a second square tube 5 with a rectangular frame structure and a fireproof plate 6. The rectangular frame structure of the second square tube 5 is welded from ordinary square tubes, and three short tubes are welded in the middle of the rectangular frame structure to increase its strength. Two fireproof plates 6, which are non-combustible inorganic composite boards, are fixed to both sides of the second square tube 5 with bolts 12. A first hole is drilled in the middle of the wide side of the second square tube 5 to fix and install the vane shaft 4. Two blade shafts 4 are installed at both ends of the square tube 5. The two blade shafts 4 are installed on the left and right flat surfaces 2 respectively through bearings 7. Spring plates 8 are set on the flat surfaces 2, covering the flat surfaces 2. Four blades are installed on the flat surfaces 2 in the same direction. The same end of the four blades is connected to the connecting rod 9. The connecting rod 9 consists of a long rod and four short rods. The long rod and the short rods are connected by a shaft and can rotate relative to each other. A metal plate is fixed on the blade. The short rods are welded to the metal plate. The long rod is a fourth square tube. When the blades are open, the long rod is located on one side of the flat surfaces 2, parallel to the flat surfaces 2 and does not affect the blades. One of the blade shafts 4 at the other end is connected to the temperature control switch 10. The bearing 7 is not installed on the flat surfaces 2 here. A second hole is drilled on the valve body 1. The temperature control switch 10 is installed on the outside of the valve body 1 through the second hole. The upper and lower frames of the valve body 1 are respectively provided with baffles 3. The baffles 3 are third square tubes and are fixed to the valve body 1 with screws.
[0011] like Figure 4 , 5The blades and blades or baffles are closed in a stepped manner, and the blades are closed in a two-step manner. When manufacturing the blades, the two fireproof plates 6 are installed in a staggered manner. The long side of one fireproof plate 6 covers the long side of the second square tube 5 and protrudes, while the long side of the other fireproof plate 6 is exposed. The other fireproof plate 6 is also installed in this manner. The blade and baffle 3 are closed in a single-step manner. For blades manufactured in the above manner, the step on the side of the blade that contacts the baffle 3 is changed to a single step. That is, the part of the fireproof plate that protrudes from the square tube on one side of the blade is deleted and aligned with the square tube. The other fireproof plate 6 remains exposed from the square tube. This makes it a single step.
[0012] An expansion-type sealing strip 11 is provided between the blade and the upper and lower frame of the valve body 1. The expansion-type sealing strip 11 is bonded to the valve body 1. The expansion-type sealing strip 11 expands when heated to fill the space, thereby reducing air leakage.
[0013] The square tube is made of galvanized steel square tube or stainless steel square tube.
[0014] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A fireproof valve, mainly composed of a valve body, a flange, a blade, and a stop bar, wherein the valve body is made of metal sheet, a single sheet bent into a square frame, and flanges are connected to both ends of the valve body, characterized in that... The valve body is composed of two first square tubes, which are fixed to the left and right sides of the valve body respectively. The blades are composed of a second square tube with a rectangular frame structure and a fireproof plate. Two fireproof plates are fixed to both sides of the second square tube with bolts. The fireproof plates are non-combustible inorganic composite boards. The blade shaft is fixedly installed in the middle of the wide side of the second square tube with a rectangular frame structure. The two ends of the blade shaft are respectively installed on bearings. Spring plates are set on the valve body. The bearings are installed on the valve body. Several blades are connected to the connecting rod at the same end. The upper and lower sides of the valve body are respectively equipped with baffles, which are third square tubes.
2. The fireproof valve according to claim 1, characterized in that... The blades and blades or baffles form a stepped closure, the blades and blades form a two-step closure, and the blades and baffles form a single-step closure.
3. The fireproof valve according to claim 1, characterized in that... An expansion-type sealing strip is provided between the blade and the upper and lower frame of the valve body, and the expansion-type sealing strip is adhered to the valve body.
4. The fireproof valve according to claim 1, characterized in that... The square tube is made of galvanized steel square tube or stainless steel square tube.