Centrifugal fan volute

Abstract

The utility model discloses a volute of a centrifugal fan. The volute of the centrifugal fan comprises a volute body, an air outlet is formed in the upper end position of one side of the fan volute, a base is installed at the bottom end position of the fan volute, a bottom plate is arranged at the bottom end position of the base, a plurality of shock absorbers are arranged between the upper end of the bottom plate and the base, each shock absorber is composed of an inserting rod and an inserting cylinder, the inserting rods are installed at the bottom end position of the bottom plate, and the inserting cylinders are installed at the bottom end position of the base plate. An inserting cylinder is installed at the upper end of the bottom plate, the bottom end of the inserting rod is inserted into the inserting cylinder, a spring is installed at the position, located at the bottom end of the inserting rod, in the inserting cylinder, a damping sleeve is installed at the upper end of the inserting cylinder, and the damping sleeve is in sliding connection with the inserting rod. When the fan volute is used, shock absorption is carried out through the shock absorber, in the using process of the shock absorber, when the shock of the fan volute is large, the shock can be buffered through the spring, meanwhile, the friction force between the inserting rod and the inserting barrel can be increased through the damping sleeve, and the phenomenon that the fan volute shakes due to the shock in the using process is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of fan volutes, in particular to a centrifugal fan volute. Background Art

[0002] A centrifugal fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Centrifugal fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and air intake of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selection of grains; wind tunnel wind source and inflation and propulsion of hovercraft, etc. The volute of the centrifugal fan is a traditional Chinese medicine component of the centrifuge.

[0003] Application No. CN202222678068.8 discloses a centrifugal fan volute structure, including volute 1, volute 2 and a quick connection unit; volute 1: an air inlet is provided in the middle of its left surface; volute 2: a mounting port is provided in the middle of its right surface, and volute 1 and volute 2 are arranged in cooperation; the quick connection unit includes a sliding rod, a rectangular plate, a mounting cavity and a movable card plate, the sliding rods are respectively slidably connected to the sliding holes evenly arranged at the edge of the left surface of volute 1, the right end of the sliding rod is provided with a rectangular plate, the right surface of volute 1 is provided with a rectangular avoidance groove corresponding to the rectangular plate one by one, the surface of volute 2 is provided with a rectangular slot corresponding to the rectangular plate one by one, and the right surface edge of volute 2 is provided with evenly distributed mounting cavities, and the mounting cavities are respectively connected to the corresponding rectangular slots. The prior art has poor shock absorption performance during use, and long-term use may cause loosening of parts due to vibration. Utility Model Content

[0004] The utility model aims to provide a centrifugal fan volute to solve the problems in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a centrifugal fan volute, the fan volute; an air inlet is installed at the front end position of the fan volute, an air outlet is installed at the upper end position of one side of the fan volute, a base is installed at the bottom end position of the fan volute, a bottom plate is arranged at the bottom end position of the base, a plurality of vibration dampers are arranged between the upper end of the bottom plate and the base, the vibration damper is composed of a plug rod and a plug tube, the plug rod is installed at the bottom end position of the bottom plate, an plug tube is installed at the upper end position of the bottom plate, the bottom end of the plug rod is inserted into the plug tube, a spring is installed inside the plug tube at the bottom end position of the plug rod, a damping sleeve is installed at the upper end of the plug tube, and the damping sleeve is slidably connected to the plug rod.

[0006] Preferably, a protective cover is provided between the base and the bottom plate, and the protective cover is adhered to the bottom end of the base and the upper end of the bottom plate by adhesive.

[0007] Preferably, a corrosion-resistant layer is provided on the outer side of the fan volute, and the corrosion-resistant layer is provided as a corrosion-resistant coating layer.

[0008] Preferably, a limit plate is provided at the bottom end of the insertion rod inside the insertion tube, and the limit plate is welded to the bottom end of the insertion rod.

[0009] Preferably, a soft metal pad is provided at the bottom end of the base plate, and the soft metal pad is welded at the bottom end of the base plate.

[0010] Preferably, a mounting plate is provided at the upper end of the air outlet, the mounting plate is welded to the upper end of the air outlet, and a soft cushion is attached to the upper end of the mounting plate by adhesive.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. The vibration absorber is used to reduce vibration during use. When the fan volute vibrates greatly during use, the spring can buffer the vibration. At the same time, the damping sleeve can increase the friction between the plug rod and the plug cylinder to avoid the shaking of the fan volute due to vibration during use;

[0013] 2. The protective cover is used to protect the shock absorber, reduce the corrosion of the shock absorber by air and moisture during use, and extend the service life of the shock absorber;

[0014] 3. The setting of the limit plate is used to limit the range of motion of the plug rod to prevent the plug rod from being separated from the plug tube during use;

[0015] 4. The installation plate is used to install the air outlet. When the installation plate is installed, the cushion will be compressed and deformed to fill the gap between the installation plate and the installation base, making the installation of the installation plate more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is a side view structural schematic diagram of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the base of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the shock absorber of the utility model.

[0021] In the figure: 1. fan volute; 2. corrosion-resistant layer; 3. air outlet; 4. mounting plate; 5. soft pad; 6. base; 7. protective cover; 8. bottom plate; 9. soft metal pad; 10. shock absorber; 11. plug rod; 12. damping sleeve; 13. limit plate; 14. spring; 15. plug tube; 16. air inlet. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 In an embodiment of the utility model, a centrifugal fan volute, a fan volute 1; a corrosion-resistant layer 2 is arranged on the outer side of the fan volute 1, and the corrosion-resistant layer 2 is arranged as a corrosion-resistant paint layer. The corrosion-resistant paint layer used in the corrosion-resistant layer 2 has strong corrosion resistance and can reduce the corrosion of the turbine housing during use. An air inlet 16 is installed at the front end of the fan volute 1, an air outlet 3 is installed at the upper end of one side of the fan volute 1, a base 6 is installed at the bottom end of the fan volute 1, a bottom plate 8 is arranged at the bottom end of the base 6, and a plurality of shock absorbers 10 are arranged between the upper end of the bottom plate 8 and the base 6. The shock absorber 10 is composed of an insertion rod 11 and an insertion tube 15. The insertion rod 11 is installed at the bottom end of the bottom plate 8, and the insertion tube 15 is installed at the upper end of the bottom plate 8. The bottom end of the insertion rod 11 is inserted into the insertion tube 15, and a spring 14 is installed inside the insertion tube 15 at the bottom end of the insertion rod 11. A damping sleeve 12 is installed at the upper end of the insertion tube 15, and the damping sleeve 12 is slidably connected to the insertion rod 11; a limiting plate 13 is arranged at the bottom end of the insertion rod 11 at the inner end of the insertion tube 15, and the limiting plate 13 is welded to the bottom end of the insertion rod 11. The setting of the limiting plate 13 is used to limit the range of motion of the insertion rod 11 to prevent the insertion rod 11 from detaching from the insertion tube 15 during use.

[0024] A protective cover 7 is arranged between the base 6 and the bottom plate 8. The protective cover 7 is adhered to the bottom end of the base 6 and the upper end of the bottom plate 8 by adhesive. The protective cover 7 is arranged to protect the shock absorber 10, reduce the corrosion of the shock absorber 10 by air and moisture during use, and extend the service life of the shock absorber 10; a soft metal pad 9 is arranged at the bottom end of the bottom plate 8, and the soft metal pad 9 is welded at the bottom end of the bottom plate 8. The texture of the soft metal pad 9 is relatively soft. When the bottom plate 8 is installed, the soft metal pad 9 will be deformed by pressure to fill the gap between the bottom plate 8 and the mounting base, so that the bottom plate 8 and the mounting base are installed more tightly.

[0025] A mounting plate 4 is provided at the upper end of the air outlet 3, and the mounting plate 4 is welded to the upper end of the air outlet 3. A soft pad 5 is attached to the upper end of the mounting plate 4 by adhesive. The mounting plate 4 is used to install the air outlet 3. When the mounting plate 4 is installed, the soft pad 5 will be compressed and deformed to fill the gap between the mounting plate 4 and the mounting base, so that the mounting plate 4 can be installed more stably.

[0026] The working principle and use process of the utility model are as follows: the fan volute 1 is damped by the vibration absorber 10 when in use. During the use of the vibration absorber 10, when the fan volute 1 vibrates greatly, the vibration can be buffered by the spring 14. At the same time, the friction between the insertion rod 11 and the insertion tube 15 can be increased by the damping sleeve 12, so as to avoid the shaking of the fan volute 1 due to vibration during use.

[0027] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions described in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A centrifugal fan volute, the fan volute (1); characterized in that: An air inlet (16) is installed at the front end of the fan volute (1), an air outlet (3) is installed at the upper end of one side of the fan volute (1), a base (6) is installed at the bottom end of the fan volute (1), a bottom plate (8) is provided at the bottom end of the base (6), a plurality of vibration dampers (10) are provided between the upper end of the bottom plate (8) and the base (6), the vibration dampers (10) are composed of an insertion rod (11) and an insertion tube (15), the insertion rod (11) is installed at the bottom end of the bottom plate (8), an insertion tube (15) is installed at the upper end of the bottom plate (8), the bottom end of the insertion rod (11) is inserted into the insertion tube (15), a spring (14) is installed inside the insertion tube (15) at the bottom end of the insertion rod (11), a damping sleeve (12) is installed at the upper end of the insertion tube (15), and the damping sleeve (12) is slidably connected to the insertion rod (11).

2. A centrifugal fan volute according to claim 1, characterized in that: A protective sleeve (7) is provided between the base (6) and the bottom plate (8), and the protective sleeve (7) is adhered to the bottom end of the base (6) and the upper end of the bottom plate (8) by adhesive.

3. The centrifugal fan volute according to claim 1, characterized in that: A corrosion-resistant layer (2) is provided on the outside of the fan volute (1), and the corrosion-resistant layer (2) is provided as a corrosion-resistant coating layer.

4. A centrifugal fan volute according to claim 1, characterized in that: A limiting plate (13) is provided at the bottom end of the insertion rod (11) located inside the insertion tube (15), and the limiting plate (13) is welded to the bottom end of the insertion rod (11).

5. The centrifugal fan volute according to claim 1, characterized in that: A soft metal pad (9) is provided at the bottom end of the bottom plate (8), and the soft metal pad (9) is welded to the bottom end of the bottom plate (8).

6. A centrifugal fan volute according to claim 1, characterized in that: A mounting plate (4) is provided at the upper end of the air outlet (3); the mounting plate (4) is welded to the upper end of the air outlet (3); and a soft pad (5) is attached to the upper end of the mounting plate (4) by means of adhesive.

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