Extending interface of centrifugal fan case

Abstract

The utility model relates to the technical field of ventilation equipment. The centrifugal fan case outward-extending connector comprises an outer connector body arranged on a fan body, a connecting frame is arranged at the end of the outer connector body, a plurality of short connecting screw rods are evenly arranged on the upper edge and the lower edge of the connecting frame, and vertical strip-shaped holes are formed in the two side edges of the connecting frame. The connecting frame further comprises a side supporting plate matched with the strip-shaped hole, and one end of the side supporting plate is provided with a turning edge which is perpendicular to the side supporting plate and used for pressing the connecting frame and the end of the air pipe. Sliding grooves matched with the side supporting plates are formed in the outer surfaces of the two side walls of the outer connector, and one ends of the side supporting plates penetrate through the strip-shaped holes to stretch into the sliding grooves and are fixedly connected with the sliding grooves through side fixing bolts. The connection stability of the external connector and the air pipe can be effectively improved, and the risk of deformation is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a ventilation equipment technical field, concretely relates to a centrifugal fan machine case outer exhibition interface. BACKGROUND

[0002] At present, centrifugal fan is communicated with the wind pipe main pipe through the air inlet and outlet interface in the use process, and air is sent into the wind pipe main pipe or the air in the wind pipe main pipe is extracted through the positive pressure air supply or the negative pressure air exhaust. In the process of connecting the air inlet and outlet interface with the wind pipe, a plurality of connecting holes or connecting short screws are arranged on the connecting end frame of the air inlet and outlet interface and the wind pipe, and the two are fastened and connected by connecting bolts / screws. But this way is affected by the gravity of the wind pipe in the long-term use process, the shear effect of the bolt is more obvious, and there is a risk of deformation and even fracture, which affects the subsequent use and maintenance. And because the fan often vibrates in the working process, the deformation risk of the bolt in the long-term use process is greater, which is not conducive to the later disassembly, cleaning and maintenance operation. SUMMARY

[0003] The utility model discloses a centrifugal fan machine case outer exhibition interface not easy to deform.

[0004] In order to realize the above-mentioned invention purpose, the technical scheme that the utility model adopts is: a centrifugal fan machine case outer exhibition interface, including the outer interface that sets up on the fan main body, the end of outer interface sets up the connecting frame, the upper and lower two sides of connecting frame are evenly provided with a plurality of connecting short screws, and the both sides of connecting frame are provided with vertical strip holes;Still include with the lateral bracing plate that strip hole is adapted, one end of lateral bracing plate is provided with the elbow edge that is perpendicular to lateral bracing plate and is used for pressing the connecting frame and the end of wind pipe, the both side walls of outer interface are provided with the sliding groove that cooperates with lateral bracing plate, one end of lateral bracing plate passes through strip hole and extends into sliding groove, and is fixedly connected with sliding groove through lateral fixed bolt.

[0005] Preferably, the sliding groove is composed of two Z-shaped groove plates fixedly arranged on the side walls of the outer interface and oppositely arranged.

[0006] Preferably, two parallel strip holes are arranged on the both sides of the connecting frame, the edge of the elbow edge is provided with a bent edge bent towards the lateral bracing plate, and the bent edge also cooperates with the strip hole.

[0007] Preferably, the side opposite to the surface of the lateral bracing plate is provided with a rubber pad.

[0008] The utility model discloses beneficial effect concentrates in: can effectively promote the stability of external interface and air pipe connection, reduce the risk of deformation. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is structural diagram of fan main body;

[0010] Figure 2 It is Figure 1 The side view of the utility model discloses;

[0011] Figure 3 It is structural diagram of side bracing plate;

[0012] Figure 4 It is structural diagram of groove plate;

[0013] Figure 5 It is structural diagram of external interface and side bracing plate in a preferred implementation. DETAILED DESCRIPTION

[0014] As Figures 1-5 The utility model discloses a centrifugal fan case external interface, including setting up on the fan main body 1 external interface 2, the external interface 2 generally is square structure, the end of external interface 2 sets up connecting frame 3.

[0015] One big particular of the utility model lies in, the upper and lower two sides of connecting frame 3 evenly are provided with a plurality of connecting short screw 4, and the both sides of connecting frame 3 are provided with vertical strip hole 5.Connecting short screw 4 is connected when the end of wind pipe is connected, and the left and right sides are connected through the side bracing plate 6 inserted in strip hole 5.

[0016] Still include with strip hole 5 the side bracing plate 6 of adaptation, the one end of side bracing plate 6 is provided with the elbow 0 for pressing the connecting frame 3 and the end of wind pipe, which is perpendicular to side bracing plate 6.The both side walls of external interface 2 outer surface are provided with the sliding groove 7 that cooperates with side bracing plate 6, and the sliding groove 7 is preferably composed of groove plate 9 as Figure 4 Described in the middle, that is to say, the sliding groove 7 is composed of two fixedly set on the side wall of external interface 2, the Z-shaped groove plate 9 of opposite arrangement.

[0017] In the connected state, one end of the side support plate 6 extends into the sliding groove 7 through the strip-shaped hole 5 and is fixedly connected with the sliding groove 7 through the side fixing bolt 8. The utility model discloses a side support plate 6 as a side connecting component, replaces the original connecting short screw rod, can effectively share the longitudinal shearing force, is not easy to deform, can also avoid the deformation of the connecting short screw rod, prolongs the service life, is favorable for subsequent dismounting, cleaning and maintenance.

[0018] On this basis, further can be, as Figure 5 As shown in the figure, two parallel strip-shaped holes 5 are arranged on the two side edges of the connecting frame 3, the edge of the corner edge 0 is provided with a bent edge 10 which is bent towards the side support plate 6, and the bent edge 10 is matched with the strip-shaped hole 5. In this way, the corner edge 0 and the bent edge 10 form double supports, and the connection stability is better.

[0019] In addition, in order to improve the stability of the side support plate 6 after installation and reduce the influence of vibration, the side support plate 6 is provided with a rubber pad 11 on the side opposite to the surface of the external interface 2.

Claims

1. A centrifugal fan case extension interface, comprising an external interface (2) arranged on a fan body (1), an end of the external interface (2) is provided with a connecting frame (3), characterized in that: The connecting frame (3) is uniformly provided with a plurality of connecting short screws (4) on its upper and lower edges, and vertical strip-shaped holes (5) are arranged on the two side edges of the connecting frame (3); further comprising a side support plate (6) matched with the strip-shaped holes (5), one end of the side support plate (6) is provided with a corner edge (0) perpendicular to the side support plate (6) and used for pressing the connecting frame (3) and the end of the air pipe; the outer interface (2) is provided with a sliding groove (7) matched with the side support plate (6) on the outer surface of the two side walls, one end of the side support plate (6) extends into the sliding groove (7) through the strip-shaped hole (5), and the side support plate (6) is fixedly connected with the sliding groove (7) through a side fixing bolt (8).

2. The centrifugal fan box outboard interface of claim 1, wherein: The sliding groove (7) is composed of two Z-shaped groove plates (9) fixedly arranged on the side walls of the outer interface (2) and oppositely arranged.

3. The centrifugal fan box outboard interface of claim 2, wherein: The two side edges of the connecting frame (3) are provided with two parallel strip-shaped holes (5), and the edge of the corner edge (0) is provided with a bent edge (10) bent towards the side support plate (6), and the bent edge (10) is also matched with the strip-shaped hole (5).

4. The centrifugal fan box outboard interface of claim 3, wherein: The side opposite to the surface of the side support plate (6) is provided with a rubber pad (11).

Images