Novel explosion-proof centrifugal fan

Abstract

The utility model discloses a novel explosion-proof centrifugal fan which comprises a base, a centrifugal fan body is fixed on the surface of the base, a driving shaft is arranged at the outer end of the centrifugal fan body, a supporting seat is fixed on the surface of the base, the driving shaft is connected in the supporting seat through a bearing, and an inserting hole is formed in the surface of the base. A supporting table is fixed to the surface of the supporting rod, a motor is fixed to the surface of the supporting table, a spline protrusion is arranged outside a shaft rod of the motor, a spline groove is formed in the inner side of a driving shaft, a positioning shaft is arranged at the outer end of the supporting table, and a side plate is fixed to the surface of the base. The driving device is installed on the surface of the liftable supporting table, the lifting height of the driving device can be adjusted, the driving device and the driving shaft are installed in a matched mode, a spline insertion meshing transmission structure is adopted during installation, lifting meshing installation can be adjusted, the deformation problem cannot occur during driving, installation is adjustable, and installation is smooth.

Description

Technical Field

[0001] The utility model relates to the field of explosion-proof centrifugal fans, and more specifically, to a novel explosion-proof centrifugal fan. Background Art

[0002] Most of the existing explosion-proof centrifugal fans will vibrate during use. When the connection between the explosion-proof centrifugal fan and the ground is unstable, the explosion-proof centrifugal fan will shake violently, and the connection between the motor and the fan shaft will be unstable.

[0003] For example, CN216342873U discloses an explosion-proof centrifugal fan, which belongs to the technical field of centrifugal fans. An explosion-proof centrifugal fan comprises a placing frame, a driver is fixedly mounted on the top of the placing frame, a limiter is fixedly sleeved on the bottom of the placing frame, an extrusion rod is sleeved on the internal thread of the placing frame, a casing is fixedly mounted on the top of the placing frame, and an impeller is movably mounted inside the casing;

[0004] In the above-mentioned patent, the motor and the fan drive shaft are directly connected through a linkage shaft and a sleeve, that is, they are connected through a shaft pin. This connection method is stable when used, and during installation, the motor shaft point and the fan shaft are required to be at the same center point. However, during machining, there will be an error between the installation hole position and the actual one, resulting in an unsmooth installation of the shaft pin, vibration loss when used with the motor, deformation of the connection and other problems. Utility Model Content

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide a new explosion-proof centrifugal fan, which is installed by the motor and is installed on the surface of a liftable support platform. The lift height can be adjusted to match the drive shaft for installation, and a spline plug-in meshing transmission structure is used during installation. The lift meshing installation can be adjusted, and there will be no deformation problems during driving. The installation is adjustable and smooth.

[0006] To solve the above problems, the utility model adopts the following technical solutions.

[0007] A novel explosion-proof centrifugal fan comprises a base, a centrifugal fan body is fixed on the surface of the base, a driving shaft is arranged on the outer end of the centrifugal fan body, a support seat is fixed on the surface of the base, the driving shaft is connected in the support seat through a bearing, an insertion hole is arranged on the surface of the base, a support rod is inserted in the insertion hole, a support platform is fixed on the surface of the support rod, a motor is fixed on the surface of the support platform, a spline protrusion is arranged on the outside of the shaft rod of the motor, a spline groove is arranged on the inside of the driving shaft, a positioning shaft is arranged on the outer end of the support platform, a side plate is fixed on the surface of the base, the positioning shaft is stuck in the inner surface of the side plate, and a sliding groove is arranged on the surface of the side plate, a first nut is installed on the outside of the positioning shaft through a thread, and a second nut is connected to the outer surface of the support rod through a thread. When the motor is installed, it is installed on the surface of the liftable support platform, and its adjustable lifting height is matched with the driving shaft for installation, and a spline plug-in meshing transmission structure is adopted during installation, and the lifting meshing installation can be adjusted, and there will be no deformation problem during driving, and the installation is adjustable and smooth.

[0008] Furthermore, the inner side surface of the outer end of the base is connected to a bolt rod through a thread, and a spiral blade is fixed to the outer surface of the bolt rod.

[0009] Furthermore, the spiral blades are conically distributed on the outer surface of the bolt rod, and the spiral blades are made of stainless steel.

[0010] Furthermore, the bolt rods are distributed at four corners of the base, and the lower surface of the bolt rods is configured as a conical head.

[0011] Furthermore, the front end of the support platform is attached to the inner surface of the support seat, and the rear side of the support platform is attached to the inner surface of the side plate.

[0012] Furthermore, the four groups of support rods are distributed and fixed on the lower surface of the support platform and are fixedly connected by welding.

[0013] Furthermore, the outer surface of the lower end of the support rod is tightly fitted to the inner surface of the insertion hole.

[0014] Compared with the prior art, the advantages of the present invention are:

[0015] (1) When installing through the motor, it is installed on the surface of the liftable support platform, and its adjustable lifting height is installed in conjunction with the drive shaft. During installation, a spline plug-in meshing transmission structure is used, and the lifting meshing installation can be adjusted. There will be no deformation problems during driving, and the installation is adjustable and smooth. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a bottom view of the support platform of the utility model;

[0018] Figure 3 This is a view of the bolt rod and spiral blade of the utility model;

[0019] Figure 4 It is a top view of the bolt rod and spiral blade of the utility model;

[0020] Figure 5 It is a side view showing the positional relationship between the drive shaft and the spline groove of the utility model.

[0021] Description of the numbers in the figure:

[0022] 1 base, 2 centrifugal fan body, 3 drive shaft, 4 support seat, 5 insertion hole, 6 support rod, 7 support platform, 8 motor, 9 spline protrusion, 10 spline groove, 11 positioning shaft, 12 side plate, 120 slide groove, 13 first nut, 60 second nut, 14 bolt rod, 15 spiral blade. DETAILED DESCRIPTION

[0023] 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.

[0024] Example 1

[0025] See also Figure 1-5 A novel explosion-proof centrifugal fan comprises a base 1, a centrifugal fan body 2 is fixed on the surface of the base 1, a driving shaft 3 is arranged at the outer end of the centrifugal fan body 2, a supporting seat 4 is fixed on the surface of the base 1, the driving shaft 3 is connected to the supporting seat 4 through a bearing, an interpenetrating hole 5 is arranged on the surface of the base 1, a supporting rod 6 is inserted in the interpenetrating hole 5, a supporting platform 7 is fixed on the surface of the supporting rod 6, a motor 8 is fixed on the surface of the supporting platform 7, a spline protrusion 9 is arranged on the outside of the shaft of the motor 8, a spline groove 10 is arranged on the inside of the driving shaft 3, a positioning shaft 11 is arranged on the outer end of the supporting platform 7, a side plate 12 is fixed on the surface of the base 1, the positioning shaft 11 is stuck in the inner surface of the side plate 12, a sliding groove 120 is arranged on the surface of the side plate 12, a first nut 13 is installed on the outside of the positioning shaft 11 through a thread, and a second nut 60 is connected to the outer surface of the support rod 6 through a thread;

[0026] The inner surface of the outer end of the base 1 is connected to the bolt rod 14 through a thread, and a spiral blade 15 is fixed on the outer surface of the bolt rod 14. The spiral blade 15 is arranged on the outer surface of the bolt rod 14 in a conical shape. The spiral blade 15 is made of stainless steel. The bolt rod 14 is distributed at the four corners of the base 1. The lower surface of the bolt rod 14 is arranged as a conical head, which is convenient for inserting into the ground. When it is used, the bolt rod 14 is twisted downward to drive the spiral blade 15 to rotate and drive into the ground, which can keep the fuselage stable.

[0027] The front end of the support platform 7 is attached to the inner surface of the support seat 4, and the rear side of the support platform 7 is attached to the inner surface of the side plate 12. The four groups of support rods 6 are distributed and fixed on the lower surface of the support platform 7 and fixedly connected by welding. The outer surface of the lower end of the support rod 6 is tightly attached to the inner surface of the insertion hole 5. When installing the drive, twist the second nut 60 to adjust the height of the support rod 6, which can drive the motor 8 to rise. After the spline protrusion 9 rises, it is inserted into the meshing spline groove 10, and then the motor 8 is fixed to the surface of the support platform 7, so that the motor 8 directly drives the drive shaft 3 to rotate, and then the position of the support platform 7 is fixed by locking the first nut 13. The support platform 7 is stable and firm, the installation is stable and will not loosen, it is not easy to wear and deform during transmission, it is easy to disassemble, and it is convenient to use.

[0028] The above is only a preferred specific implementation of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. A novel explosion-proof centrifugal fan, comprising a base (1), characterized in that: A centrifugal fan body (2) is fixed on the surface of the base (1), a driving shaft (3) is provided at the outer end of the centrifugal fan body (2), a support seat (4) is fixed on the surface of the base (1), the driving shaft (3) is connected to the support seat (4) via a bearing, an insertion hole (5) is provided on the surface of the base (1), a support rod (6) is inserted into the insertion hole (5), a support platform (7) is fixed on the surface of the support rod (6), a motor (8) is fixed on the surface of the support platform (7), and the motor (8) is ) is provided with a spline protrusion (9) on the outside of the shaft rod, a spline groove (10) is provided on the inner side of the driving shaft (3), a positioning shaft (11) is provided on the outer end of the support platform (7), a side plate (12) is fixed on the surface of the base (1), the positioning shaft (11) is inserted into the inner surface of the side plate (12), and a sliding groove (120) is provided on the surface of the side plate (12), a first nut (13) is installed on the outside of the positioning shaft (11) through a thread, and the outer surface of the support rod (6) is connected to a second nut (60) through a thread.

2. A novel explosion-proof centrifugal fan according to claim 1, characterized in that: The inner side surface of the outer end of the base (1) is connected to a bolt rod (14) via a thread, and a spiral blade (15) is fixed to the outer surface of the bolt rod (14).

3. A novel explosion-proof centrifugal fan according to claim 2, characterized in that: The spiral blades (15) are arranged in a conical distribution on the outer surface of the bolt rod (14), and the spiral blades (15) are made of stainless steel.

4. A novel explosion-proof centrifugal fan according to claim 3, characterized in that: The bolt rods (14) are distributed at the four corners of the base (1), and the lower surface of the bolt rods (14) is configured as a conical head.

5. The novel explosion-proof centrifugal fan according to claim 1 is characterized in that: The front end of the support platform (7) is in contact with the inner surface of the support seat (4), and the rear side of the support platform (7) is in contact with the inner surface of the side plate (12).

6. The novel explosion-proof centrifugal fan according to claim 1 is characterized in that: The support rods (6) are distributed in four groups and fixed on the lower surface of the support platform (7) and are fixedly connected by welding.

7. The novel explosion-proof centrifugal fan according to claim 1 is characterized in that: The outer surface of the lower end of the support rod (6) is tightly fitted to the inner surface of the insertion hole (5).

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