Noise reduction type high-strength centrifugal fan

Abstract

The utility model discloses a noise reduction type high strength centrifugal fan relates to ship fan technical field, including fan casing, the inner side of left and right two wall of fan casing is fixedly sleeved with two diversion ring that left and right symmetry distribution, the one side of two diversion ring close to each other is both fixedly connected with the connecting section, supporting mechanisms are fixedly connected to the left side and the right side of the fan shell, center shafts are movably installed on the inner sides of the supporting mechanisms, and four sealing mechanisms distributed in a rectangular shape are fixedly connected to the positions, close to the bottom, of the front side and the rear side of the fan shell. According to the noise reduction type high-strength centrifugal fan, the corrosion resistance is improved by changing materials into 316L stainless steel, the structure is changed into a welding structure from a riveting structure, the thickness of the corresponding materials is increased, the strength of the fan shell is improved, meanwhile, the bearing support is limited through the pressing plate, and the noise reduction type high-strength centrifugal fan is convenient to use. The lateral impact force borne by the pressing plate is further improved, and the overall strength is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a fan for ship technical field especially relates to a high strength centrifugal fan of noise reduction type. BACKGROUND

[0002] The fan for ship is a kind of equipment specially designed for the ventilation, ventilation, cooling, deodorization and other purposes of ship, and is widely used in each cabin of ship, such as kitchen, bathroom, cockpit etc.

[0003] The prior art has the following problems:

[0004] On some high corrosion resistance and high pressure ships, the original fan shell is riveted with galvanized sheet and then sprayed, and the corrosion resistance cannot be achieved, and rust will occur after a long time. The riveting strength is slightly poor, the ship bounces greatly when running, and the long-time bouncing will cause the riveted shell to loosen, causing large vibration. UTILITY MODEL CONTENTS

[0005] The utility model provides a high strength centrifugal fan of noise reduction type to solve the problems in the above background.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is:

[0007] A high strength centrifugal fan of noise reduction type, comprising a fan shell, two flow guide rings symmetrically distributed on the inner side of the left and right walls of the fan shell are fixedly sleeved, the side of the two flow guide rings close to each other is fixedly connected with a connecting section, the left and right sides of the fan shell are fixedly connected with a supporting mechanism, the inner side of the supporting mechanism is movably installed with a center shaft, and the positions close to the bottom of the front and rear sides of the fan shell are fixedly connected with four rectangularly distributed closed mechanisms.

[0008] The supporting mechanism comprises a bearing support, the front and rear sides and the bottom of the bearing support are fixedly connected with a first connecting wing plate, the upper side of the first connecting wing plate is fixedly connected with a self-aligning double-row roller bearing, the outer side of the center shaft is movably installed on the inner side of the self-aligning double-row roller bearing, and the center shaft and the fan shell are both made of 316L.

[0009] Preferably, the positions close to the bottom of the left and right sides of the fan shell are rotatably connected with two front and rear symmetrically distributed rotating rods, the outer side of the rotating rod is slidably connected with a pressing plate, the side of the rotating rod away from the connecting section on the rear side is rotatably connected with a sleeve rod, the side of the rotating rod away from the connecting section on the front side is rotatably connected with a plug rod, the outer side of the plug rod is rotatably connected with a threaded seat in the middle, and the outer side of the threaded seat is threadedly connected on the inner side of the sleeve rod close to the front side.

[0010] Preferably, the side of the pressing plate close to the connecting section is fixedly connected with a plurality of front and back distributed clamping seats, the inner side of the clamping seat is movably sleeved on the outer side of the vertical wall of the bearing support.

[0011] Preferably, the side of the pressing plate close to the connecting section and the inner side of the clamping seat are fixedly connected with first rubber pads.

[0012] Preferably, the closing mechanism comprises a second connecting wing plate, the side of the second connecting wing plate close to the connecting section is fixedly connected to the front and back sides of the fan shell close to the bottom, the upper side of the second connecting wing plate away from the fan shell is fixedly connected with a mechanism ring, the outer side of the mechanism ring is rotatably connected with a rotating sleeve, the outer wall of the rotating sleeve is movably sleeved with a plurality of annularly distributed balls, the outer side of the rotating sleeve is movably sleeved with a cover, the outer side of the ball is movably sleeved in the ball groove opened in the inner side of the cover close to the bottom, and the outer side of the mechanism ring is provided with a plurality of annularly distributed dislocation grooves.

[0013] Preferably, the inner side of the cover is fixedly connected with a cover plate, the lower side of the cover plate is fixedly connected with a second rubber pad, and the lower side of the cover plate is overlapped on the upper side of the rotating sleeve.

[0014] Preferably, the inner side of the mechanism ring close to the bottom is provided with a plurality of annularly distributed limiting grooves, and the protrusion on the inner side of the rotating sleeve close to the bottom is slidably connected in the limiting groove.

[0015] Due to the adoption of the above technical scheme, the technical progress achieved by the utility model relative to the prior art is:

[0016] 1. The utility model provides a high strength centrifugal fan of noise reduction type adopts the cooperation of fan shell, flow guide ring, connecting section, support mechanism, bearing support, first connecting wing plate, self aligning double row roller bearing, pressing plate, rotating rod, sleeve rod, plug rod, threaded seat, clamping seat and central shaft, improves corrosion resistance by relying on material change into 316L stainless steel, changes the riveting structure to the welding structure, and the corresponding material thickness increases, the strength of the fan shell increases, and the bearing support is limited by the pressing plate, the lateral impact force received by the pressing plate is further improved, and the overall strength is increased.

[0017] 2. The utility model provides a high strength centrifugal fan of noise reduction type adopts the cooperation of closing mechanism, second connecting wing plate, mechanism ring, ball, rotating sleeve, cover, cover plate, dislocation groove and limiting groove, the fixed position of the fan is closed by the cover, the fixed position is separated from the surrounding humid air, the erosion of the humidity in the surrounding environment to the connecting portion is reduced, and when the fan is disassembled later, the problem of difficult disassembly due to rust is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the three-dimensional structure schematic view of the utility model;

[0019] Figure 2 It is the three-dimensional structure schematic view of the utility model's partial section;

[0020] Figure 3 It is the three-dimensional structure schematic view of the utility model's flow guide ring part;

[0021] Figure 4 It is the three-dimensional structure schematic view of the utility model's support mechanism part's partial section;

[0022] Figure 5 It is the three-dimensional structure schematic view of the utility model's closure mechanism part's partial section.

[0023] In the drawing: 1, fan shell; 2, flow guide ring; 3, connecting section; 4, support mechanism; 41, bearing bracket; 42, first connecting wing plate; 43, self-aligning double-row roller bearing; 44, pressing plate; 45, rotating rod; 46, sleeve rod; 47, plug rod; 48, threaded seat; 49, clamping seat; 5, center shaft; 6, closure mechanism; 61, second connecting wing plate; 62, mechanism ring; 63, ball; 64, rotating sleeve; 65, cover; 66, cover plate; 67, dislocation groove; 68, limiting groove. DETAILED DESCRIPTION

[0024] In order to make the technical means, creation features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0025] As Figures 1-5 shown, a noise reduction type high-strength centrifugal fan, including fan shell 1, the left and right two walls of fan shell 1 inside fixed sleeve connection has the two flow guide rings 2 that are distributed left and right symmetry, two flow guide rings 2 mutually close one side is fixedly connected with connecting section 3, the left and right sides of fan shell 1 are fixedly connected with support mechanism 4, the inside of support mechanism 4 is movably installed with center shaft 5, the front and rear sides of fan shell 1 are fixedly connected with four rectangular distribution closure mechanisms 6 near the bottom position;

[0026] Support mechanism 4 includes bearing bracket 41, the front and rear sides and bottom of bearing bracket 41 are all fixedly connected with first connecting wing plate 42, the upper side of first connecting wing plate 42 is fixedly connected with self-aligning double-row roller bearing 43, the outside of center shaft 5 is movably installed in the inside of self-aligning double-row roller bearing 43, center shaft 5 and fan shell 1 are all made of 316L.

[0027] It should be noted that the fan shell 1 is made of 316L, and the riveting is changed to welding, so the thickness of the side wall of the fan shell 1 needs to be increased, the area of the left and right sides of the fan shell 1 is large, a U-shaped reinforcing rib needs to be welded to ensure the overall strength of the fan shell 1, three reinforcing rods are welded between the two side plates of the fan shell 1, the bearing is a self-aligning double-row roller bearing 43, which can withstand high load operation, the left and right sides of the inside of the fan shell 1 are fixedly connected with the volute plate, which further improves the strength of the fan shell 1, and the 316L material has low strength, so the diameter of the central shaft 5 needs to be increased, and the bearing support 41 is fixed on the left and right sides of the fan shell 1 by the first connecting wing plate 42.

[0028] As shown in Figure 4 , the left and right sides of the fan shell 1 are rotatably connected with two rotation rods 45 symmetrically distributed in front and back near the bottom, the outer side of the rotation rod 45 is slidably connected with the pressing plate 44, the rotation rod 45 located at the rear side is rotatably connected with the sleeve rod 46 away from one side of the connecting section 3, the rotation rod 45 located at the front side is rotatably connected with the insertion rod 47 away from one side of the connecting section 3, the outer side of the insertion rod 47 is rotatably connected with the threaded seat 48, and the outer side of the threaded seat 48 is threadedly connected with the inner side of the sleeve rod 46 near the front side.

[0029] It should be noted that rotating the threaded seat 48 increases or reduces the total length between the sleeve rod 46 and the insertion rod 47, so that the rotation rod 45 pushes the pressing plate 44 to press it towards the bearing support 41, avoiding the bearing support 41 abutting the end connection, causing the central shaft 5 to be subjected to lateral vibration impact and the middle part of the bearing support 41 not being fixed, resulting in poor stability of the middle part, and at the same time, the insertion rod 46 and the insertion rod 47 can be provided with a pin hole to avoid the threaded seat 48 from falling off due to vibration.

[0030] As shown in Figure 4 , the pressing plate 44 is fixedly connected with a plurality of front and rear distributed clamping seats 49 on one side close to the connecting section 3, and the inner side of the clamping seat 49 is movably sleeved on the outer side of the vertical wall of the bearing support 41.

[0031] It should be noted that the clamping seat 49 is used to stabilize the pressing plate 44 and the bearing support 41, avoiding the relative movement between the bearing support 41 and the pressing plate 44.

[0032] As shown in Figure 4 , the first rubber pad is fixedly connected to the inner side of the clamping seat 49 and the side of the pressing plate 44 close to the connecting section 3.

[0033] It should be noted that the first rubber pad is used to avoid rigid contact between the pressing plate 44, the clamping seat 49 and the bearing support 41, thereby causing direct wear of the components.

[0034] As shown in Figure 5As shown, the closing mechanism 6 comprises a second connecting flap 61 fixedly connected to the front and rear sides of the fan shell 1 near the bottom, a mechanism ring 62 fixedly connected to the upper side of the second connecting flap 61 away from the fan shell 1, a rotating sleeve 64 rotatably connected to the outer side of the mechanism ring 62, a plurality of annularly distributed balls 63 movably sleeved on the inner side of the outer wall of the rotating sleeve 64, a cover 65 movably sleeved on the outer side of the rotating sleeve 64, the outer side of the balls 63 movably sleeved in the ball groove formed on the inner side of the cover 65 near the bottom, and a plurality of annularly distributed dislocation grooves 67 formed on the outer side of the mechanism ring 62.

[0035] It should be noted that a torsional spring is arranged between the rotating sleeve 64 and the mechanism ring 62, the cover 65 and the rotating sleeve 64 cannot rotate relative to each other, the cover 65 is used to close the inner side of the second connecting flap 61 to prevent moisture from entering, when the balls 63 are misaligned with the dislocation grooves 67, the cover 65 cannot be removed from the rotating sleeve 64, and when the balls 63 are aligned with the dislocation grooves 67, the cover 65 can be removed from the rotating sleeve 64.

[0036] As shown in Figure 5 the inner side of the cover 65 is fixedly connected to the upper side of the cover 65, the lower side of the cover 66 is fixedly connected to a second rubber pad, and the lower side of the cover 66 is overlapped with the upper side of the rotating sleeve 64.

[0037] It should be noted that the second rubber pad is used to seal the gap between the cover 65 and the rotating sleeve 64 to prevent moisture from entering.

[0038] As shown in Figure 5 the inner side of the mechanism ring 62 is formed with a plurality of annularly distributed limiting grooves 68 near the bottom, and the protrusions on the inner side of the rotating sleeve 64 are slidably connected to the inner side of the limiting grooves 68.

[0039] It should be noted that the limiting grooves 68 are used to limit the rotation of the rotating sleeve 64, so that when the protrusions are at both ends of the limiting grooves 68, the balls 63 and the dislocation grooves 67 are in the aligned and misaligned states.

[0040] The utility model discloses a working principle: first, fan shell 1 adopts 316L to make, and riveting is changed to welding simultaneously, therefore needs to increase the thickness of fan shell 1 side wall, the left and right sides area of fan shell 1 is larger, needs to weld U type reinforcing rib, guarantees the overall strength of fan shell 1, and the welding three reinforcing rods between the two side plates of fan shell 1, bearing uses the double row roller bearing 43 of centring, this bearing can bear high load operation, and the left and right sides of the inboard of fan shell 1 are fixedly connected with volute board, further improve the strength of fan shell 1, and 316L material strength is lower simultaneously, so need to improve the diameter of central shaft 5, bearing support 41 is fixed in the left and right sides of fan shell 1 by first connecting wing plate 42, rotates screw seat 48, makes the total length between sleeve rod 46 and insert rod 47 increase or reduce, makes the rotating lever 45 push the pressing plate 44 and make it press to bearing support 41, avoids bearing support 41 to abut end connection, leads to the problem that central shaft 5 is subjected to lateral shock impact and bearing support 41 middle part is not fixed and leads to middle part poor stability, can set the bolt hole on sleeve rod 46 and insert rod 47 simultaneously, avoids the screw seat 48 from falling off due to vibration, by relying on material changes into 316L stainless steel, improved corrosion resistance, structure changes from riveting structure to welding structure, corresponding material thickness increases, the strength of fan shell 1 increases, adopts pressing plate 44 to limit bearing support 41 simultaneously, further improves the lateral impact force that pressing plate 44 receives, makes the overall strength increase, finally, torsional spring is equipped between rotating sleeve 64 and mechanism ring 62, and the relative rotation between cover 65 and rotating sleeve 64 cannot occur, cover 65 is used for closing the inboard of second connecting wing plate 61, avoids moisture from entering, when the ball 63 is staggered with dislocation groove 67, cover 65 can be taken off from rotating sleeve 64, when the ball 63 is aligned with dislocation groove 67, cover 65 can be taken off from rotating sleeve 64, the second rubber pad is used for sealing the gap between cover 65 and rotating sleeve 64, avoids the moisture from entering here, and limiting groove 68 is used for limiting the rotation floating of rotating sleeve 64, when the lug is in the inboard both ends of limiting groove 68, the ball 63 and dislocation groove 67 are just in alignment and staggered state, by cover 65, the fixed position of this fan is closed, makes the fixed position separate from the surrounding humid air, reduces the corrosion of the connecting place in the surrounding environment, is convenient for the disassembly of this fan, avoids the problem that disassembly is difficult due to rust.

[0041] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The skilled person in the art should understand that the utility model is not limited to the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can have various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A noise-reducing high-strength centrifugal fan, comprising a fan housing (1), characterized in that: Two symmetrically distributed guide rings (2) are fixedly sleeved on the inner sides of the left and right walls of the fan housing (1). A connecting section (3) is fixedly connected to the side of the two guide rings (2) that are close to each other. A support mechanism (4) is fixedly connected to the left and right sides of the fan housing (1). A central shaft (5) is movably installed on the inner side of the support mechanism (4). Four rectangularly distributed closing mechanisms (6) are fixedly connected to the front and rear sides of the fan housing (1) near the bottom. The support mechanism (4) includes a bearing bracket (41). The bearing bracket (41) is fixedly connected to the front and rear sides and the bottom. A self-aligning double-row roller bearing (43) is fixedly connected to the upper side of the first connecting wing plate (42). The outer side of the central shaft (5) is movably installed on the inner side of the self-aligning double-row roller bearing (43). The central shaft (5) and the fan housing (1) are both made of 316L stainless steel.

2. The noise-reducing high-strength centrifugal fan according to claim 1, characterized in that: Two rotating rods (45) are rotatably connected to the left and right sides of the fan housing (1) near the bottom. A pressure plate (44) is slidably connected to the outer side of the rotating rod (45). A sleeve rod (46) is rotatably connected to the side of the rotating rod (45) away from the connecting section (3). An insert rod (47) is rotatably connected to the side of the rotating rod (45) away from the connecting section (3). A threaded seat (48) is rotatably connected to the middle of the outer side of the insert rod (47). The outer side of the threaded seat (48) is threadedly connected to the inner side of the sleeve rod (46) near the front side.

3. The noise-reducing high-strength centrifugal fan according to claim 2, characterized in that: The pressure plate (44) is fixedly connected to a number of front and rear distributed card seats (49) on the side near the connecting section (3), and the inner side of the card seats (49) is movably sleeved on the outer side of the vertical wall of the bearing bracket (41).

4. The noise-reducing high-strength centrifugal fan according to claim 3, characterized in that: The pressure plate (44) is fixedly connected to the first rubber pad on the side near the connecting section (3) and on the inner side of the card seat (49).

5. A noise-reducing high-strength centrifugal fan according to claim 1, characterized in that: The closing mechanism (6) includes a second connecting wing plate (61). The second connecting wing plate (61) is fixedly connected to the front and rear sides of the fan housing (1) near the bottom on one side of the connecting section (3). A mechanism ring (62) is fixedly connected to the upper side of the second connecting wing plate (61) away from the fan housing (1). A rotating sleeve (64) is rotatably connected to the outer side of the mechanism ring (62). Several annularly distributed balls (63) are movably sleeved on the inner side of the outer wall of the rotating sleeve (64). A cover (65) is movably sleeved on the outer side of the rotating sleeve (64). The outer side of the balls (63) is movably sleeved in a ball groove opened near the bottom on the inner side of the cover (65). Several annularly distributed dislocation grooves (67) are opened on the outer side of the mechanism ring (62).

6. A noise-reducing high-strength centrifugal fan according to claim 5, characterized in that: A cover plate (66) is fixedly connected to the upper part of the inner side of the cover (65), and a second rubber pad is fixedly connected to the lower side of the cover plate (66). The lower side of the cover plate (66) overlaps the upper side of the rotating sleeve (64).

7. A noise-reducing high-strength centrifugal fan according to claim 5, characterized in that: The inner side of the mechanism ring (62) near the bottom is provided with several annularly distributed limiting grooves (68), and the protrusion on the inner surface of the rotating sleeve (64) near the bottom is slidably connected to the inner side of the limiting grooves (68).

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