Fire-fighting anti-explosion centrifugal fan

Abstract

The utility model provides a fire-fighting explosion-proof centrifugal fan, and relates to the technical field of fire-fighting equipment. The fire-fighting anti-explosion centrifugal fan comprises a fire-fighting centrifugal fan body, and a mounting base is fixed to the output end of the fire-fighting centrifugal fan body; a connecting base is arranged at the upper end of the mounting base, a fire fighting pipe is fixed to the upper end of the connecting base, penetrating grooves are formed in the four corners of the mounting base, through holes are formed in the four corners of the connecting base, hexagon bolts are arranged at the four corners of the mounting base, and a hexagon nut is in threaded connection with the outer surface of each hexagon bolt. A clamping frame is arranged on the two hexagon bolts, and through holes are formed in the two sides of the clamping frame. According to the fire-fighting anti-explosion centrifugal fan, the mounting base is in butt joint with the connecting base, the overall stress effect is achieved, the effect of prolonging the service life of the centrifugal fan is achieved, the stable limiting effect is achieved by tightening the hexagon bolt and the hexagon nut, and the effect of improving the use stability of the centrifugal fan is achieved.

Description

Technical Field

[0001] The utility model relates to a fire-fighting explosion-proof centrifugal fan, belonging to the technical field of fire-fighting facilities. Background Art

[0002] Firefighting centrifugal fans are a crucial piece of equipment in firefighting systems. Their function is to transport air, providing the required air volume and overcoming the resistance created by air flowing through the system. There are many types of centrifugal fans, and ventilation and dust removal systems often employ a centrifugal fan structure, as ventilation and dust removal systems have significant resistance. Currently, centrifugal fans all utilize an impeller for exhaust, a design that offers low noise levels and high efficiency, making it a popular choice in the market.

[0003] While existing firefighting centrifugal fans are capable of routine air delivery, in actual use, the internal pressure of the fan increases during operation, causing a sharp rise in pressure within the pipes connected to it by bolts. Relying solely on bolts for connection, due to the concentrated stress points, can easily lead to ruptures at the connection between the fan and the pipe due to excessive pressure, shortening the centrifugal fan's service life. Furthermore, the vibrations generated by the fan during operation can easily loosen the bolts, making the connection unstable and the centrifugal fan less reliable. Utility Model Content

[0004] (1) Technical problems solved

[0005] The utility model provides a fire-fighting explosion-proof centrifugal fan to solve the problems of short service life and insufficient stability of centrifugal fans in the prior art.

[0006] (2) Technical solution

[0007] The utility model is realized by the following technical solutions: a fire-fighting explosion-proof centrifugal fan, comprising a fire-fighting centrifugal fan, wherein an output end of the fire-fighting centrifugal fan is fixed with a mounting seat;

[0008] A connecting seat is provided at the upper end of the mounting seat, a fire hose is fixed to the upper end of the connecting seat, through slots are provided at the four corners of the mounting seat, through holes are provided at the four corners of the connecting seat, hexagonal bolts are provided at the four corners of the mounting seat, and a hexagonal nut is threadedly connected to the outer surface of each hexagonal bolt, and a clamping frame is provided on the two hexagonal bolts, and through holes are provided on both sides of the clamping frame;

[0009] A fixing frame is fixed in the middle of each of the card frames, a frame groove is opened in the middle of each of the fixing frames, a connecting structure is provided on the inner wall of each of the frame grooves, and two limit frames are provided on the connecting structure; the connecting structure can slide with the two limit frames in the depth direction of the frame groove to limit the tightened hexagonal bolts and hexagonal nuts.

[0010] Preferably, the connection structure includes a sliding plate, a spring is fixed on one side of the sliding plate, a fixed plate is fixed in the middle of the sliding plate, limiting frames are fixed at both ends of the fixing plate, and limiting slots are provided at both ends of each limiting frame.

[0011] Preferably, the outer surface of each limit frame is slidably connected to the inner wall of one side of each card frame, the vertical section of each limit frame is U-shaped, each limit groove is opened at one end of each limit frame, and the limit grooves opened at both ends of each limit frame are respectively in contact with the bolt head of the hexagonal bolt and the outer surface of the hexagonal nut.

[0012] Preferably, both ends of each of the fixing plates are fixed to the middle of the two limiting frames, and the middle of each of the fixing plates is fixed to the middle of each sliding plate.

[0013] Preferably, the outer surface of each sliding plate is slidably connected to the inner wall of each frame groove, the vertical section of each sliding plate is circular, one end of each spring is fixed on one side of each sliding plate, and the other end of each spring is fixed on the inner wall of each frame groove away from the sliding plate.

[0014] Preferably, the inner wall of the card bracket contacts the outer surface of one side of the mounting seat and the connecting seat, and each vertical section of the card bracket is U-shaped.

[0015] Preferably, each of the hexagonal bolts passes through the through hole, the through groove and the inner wall of the through hole in sequence from bottom to top, the upper surface of the bolt head of the hexagonal bolt contacts the lower surface of the bracket, and the lower surface of the hexagonal nut contacts the upper surface of the connecting seat.

[0016] The utility model provides a fire-fighting explosion-proof centrifugal fan, which has the following beneficial effects:

[0017] (1) The fire-fighting explosion-proof centrifugal fan achieves the effect of overall force bearing by docking the mounting base with the connecting base, so that the hexagonal bolts, hexagonal nuts, brackets, through slots and through holes work together to avoid the occurrence of bursting of the connection caused by the concentrated force points, thereby achieving the effect of increasing the service life of the centrifugal fan.

[0018] (2) The fire-fighting explosion-proof centrifugal fan achieves a stable limiting effect by tightening the hexagonal bolts and hexagonal nuts so that the hexagonal bolts, hexagonal nuts, limit frames, limit slots, fixing plates, springs, sliding plates, frame slots, and fixing frames cooperate with each other to avoid the loosening of the bolts caused by vibrations generated when the fan is working, thereby improving the stability of the centrifugal fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 A magnified view of the structure of part A;

[0022] Figure 4 For this utility model Figure 2 Enlarged view of the B structure.

[0023]

Main component symbol description

[0024] 1. Fire-fighting centrifugal fan; 2. Mounting base; 3. Connecting base; 4. Fire-fighting pipe; 5. Through-slot; 6. Through-hole; 7. Hexagonal bolt; 8. Hexagonal nut; 9. Bracket; 10. Through-hole; 11. Fixing frame; 12. Frame slot; 13. Sliding plate; 14. Spring; 15. Fixing plate; 16. Limiting frame; 17. Limiting slot. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] Example 1

[0027] The embodiment of the utility model provides a fire-fighting explosion-proof centrifugal fan.

[0028] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , including a fire-fighting centrifugal fan 1, which is an important equipment in the fire-fighting system. Its function is to transport air, provide the required air volume for the system, and overcome the resistance generated when the air flows in the system. A mounting base 2 is fixed at the output end of the fire-fighting centrifugal fan 1, and the mounting base 2 is used to connect the fire-fighting pipe; a connecting base 3 is provided on the upper end of the mounting base 2, and a fire-fighting pipe 4 is fixed on the upper end of the connecting base 3. Through grooves 5 are provided at the four corners of the mounting base 2, and through holes 6 are provided at the four corners of the connecting base 3. Hexagonal bolts 7 are provided at the four corners of the mounting base 2, and the outer surface of each hexagonal bolt 7 is threadedly connected to a hexagonal nut 8. A clamping frame 9 is provided on the two hexagonal bolts 7, and through holes 10 are provided on both sides of the clamping frame 9. The clamping frame 9 works together with the hexagonal bolts 7 and the hexagonal nuts 8 to tightly connect the mounting base 2 and the connecting base 3 together, thereby increasing the force-bearing area.

[0029] Please refer again Figure 1 、 Figure 2 、 Figure 3 and Figure 4It is worth mentioning that the inner wall of the bracket 9 is in contact with the outer surface of one side of the mounting base 2 and the connecting base 3. The vertical cross-section of each bracket 9 is U-shaped. Each hexagonal bolt 7 passes through the through hole 10, the through groove 5 and the inner wall of the through hole 6 from bottom to top. The upper surface of the bolt head of the hexagonal bolt 7 is in contact with the lower surface of the bracket 9, and the lower surface of the hexagonal nut 8 is in contact with the upper surface of the connecting base 3.

[0030] When the utility model is in use: dock the mounting base 2 with the connecting base 3, then clamp the bracket 9 on one side of the mounting base 2 and the connecting base 3, and then pass the hexagonal bolt 7 through the through hole 10, the through groove 5 and the through hole 6 in sequence. At this time, the bolt head of the hexagonal bolt 7 presses the lower side of the bracket 9 to limit the bracket 9. Then, manually pull the limiting frame 16 to a position that does not affect the rotation of the hexagonal bolt 7 and the hexagonal nut 8. During this process, the limiting frame 16 drives the sliding plate 13 to compress the spring 14 through the fixed plate 15. Finally, by tightening the hexagonal bolt 7 and the hexagonal nut 8, the bracket 9, the mounting base 2 and the connecting base 3 are tightly connected together, thereby increasing the force-bearing area. The overall force effect is achieved, and the occurrence of bursting of the connection caused by the concentrated force points is avoided, thereby achieving the effect of increasing the service life of the centrifugal fan.

[0031] Example 2

[0032] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 4 , based on the embodiment 1, a function of position limiting and stabilizing is added;

[0033] Please refer again Figure 1 、 Figure 2 、 Figure 3 and Figure 4 It is worth mentioning that a fixing frame 11 is fixed in the middle of each card frame 9, a frame groove 12 is provided in the middle of each fixing frame 11, and a connecting structure is provided on the inner wall of each frame groove 12. The connecting structure includes a sliding plate 13, a spring 14 is fixed on one side of the sliding plate 13, and a fixing plate 15 is fixed in the middle of the sliding plate 13. Limiting frames 16 are fixed at both ends of the fixing plate 15, and limiting slots 17 are provided at both ends of each limiting frame 16. It should be noted in this process that the position of the hexagonal bolt 7 and the hexagonal nut 8 after tightening must match the limiting slot 17. If they do not match, they can be removed and reinstalled.

[0034] Please refer again Figure 1 、 Figure 2 、 Figure 3 and Figure 4It is worth mentioning that the outer surface of each limit frame 16 is slidably connected to the inner wall of one side of each card frame 9, and the vertical sections of each limit frame 16 are U-shaped. Each limit groove 17 is opened at one end of each limit frame 16, and the limit grooves 17 opened at both ends of each limit frame 16 are in contact with the bolt head of the hexagonal bolt 7 and the outer surface of the hexagonal nut 8 respectively. The two ends of each fixed plate 15 are fixed to the middle of the two limit frames 16, and the middle of each fixed plate 15 is fixed to the middle of each sliding disk 13. The outer surface of each sliding disk 13 is slidably connected to the inner wall of each frame groove 12, and the vertical sections of each sliding disk 13 are circular. One end of each spring 14 is fixed to one side of each sliding disk 13, and the other end of each spring 14 is fixed to the inner wall of each frame groove 12 away from the sliding disk 13.

[0035] During use, the present invention is constructed by tightening the hexagonal bolt 7 and hexagonal nut 8, then loosening and pulling the limiting bracket 16. The elastic force generated by the compressed spring 14 then resets the sliding plate 13. The reset sliding plate 13 resets the fixed plate 15 to which it is attached, which in turn resets the limiting bracket 16 connected thereto. The reset limiting bracket 16, with its retaining groove 17, retains the tightened hexagonal bolt 7 and hexagonal nut 8. This stabilizes the position, preventing the bolts from loosening due to vibrations generated during fan operation, thereby improving the operational stability of the centrifugal fan.

[0036] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A fire-fighting explosion-proof centrifugal fan, comprising a fire-fighting centrifugal fan (1), characterized in that: The output end of the fire-fighting centrifugal fan (1) is fixed with a mounting seat (2); The upper end of the mounting seat (2) is provided with a connecting seat (3), and a fire hose (4) is fixed to the upper end of the connecting seat (3). The four corners of the mounting seat (2) are provided with through grooves (5), and the four corners of the connecting seat (3) are provided with through holes (6). The four corners of the mounting seat (2) are provided with hexagonal bolts (7), and the outer surface of each hexagonal bolt (7) is threadedly connected with a hexagonal nut (8). A clamping frame (9) is provided on the two hexagonal bolts (7), and through holes (10) are provided on both sides of the clamping frame (9); A fixing frame (11) is fixed in the middle of each of the clamping frames (9), a frame groove (12) is opened in the middle of each of the fixing frames (11), and a connecting structure is provided on the inner wall of each of the frame grooves (12), and two limiting frames (16) are provided on the connecting structure; the connecting structure can slide with the two limiting frames (16) in the depth direction of the frame groove (12) to limit the tightened hexagonal bolts (7) and hexagonal nuts (8).

2. A fire-fighting explosion-proof centrifugal fan according to claim 1, characterized in that: The connection structure comprises a sliding plate (13), a spring (14) is fixed on one side of the sliding plate (13), a fixed plate (15) is fixed in the middle of the sliding plate (13), limiting frames (16) are fixed at both ends of the fixing plate (15), and limiting slots (17) are provided at both ends of each limiting frame (16).

3. The fire-fighting explosion-proof centrifugal fan according to claim 2, characterized in that: The outer surface of each limiting frame (16) is slidably connected to the inner wall of one side of each clamping frame (9), and the vertical section of each limiting frame (16) is U-shaped. Each limiting groove (17) is opened at one end of each limiting frame (16), and the limiting grooves (17) opened at both ends of each limiting frame (16) are in contact with the bolt head of the hexagonal bolt (7) and the outer surface of the hexagonal nut (8) respectively.

4. The fire-fighting explosion-proof centrifugal fan according to claim 2, characterized in that: Both ends of each fixed plate (15) are fixed to the middle of two limiting frames (16), and the middle of each fixed plate (15) is fixed to the middle of each sliding plate (13).

5. The fire-fighting explosion-proof centrifugal fan according to claim 2, characterized in that: The outer surface of each sliding plate (13) is slidably connected to the inner wall of each frame groove (12), and the vertical section of each sliding plate (13) is circular. One end of each spring (14) is fixed to one side of each sliding plate (13), and the other end of each spring (14) is fixed to the inner wall of each frame groove (12) away from the sliding plate (13).

6. The fire-fighting explosion-proof centrifugal fan according to claim 1, characterized in that: The inner wall of the card frame (9) contacts the outer surface of one side of the mounting seat (2) and the connecting seat (3), and each vertical section of the card frame (9) is U-shaped.

7. The fire-fighting explosion-proof centrifugal fan according to claim 1, characterized in that: Each of the hexagonal bolts (7) passes through the through hole (10), the through groove (5) and the inner wall of the through hole (6) in sequence from bottom to top, the upper surface of the bolt head of the hexagonal bolt (7) contacts the lower surface of the bracket (9), and the lower surface of the hexagonal nut (8) contacts the upper surface of the connecting seat (3).

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