Control fan volute molded line riveting tenon structure

Abstract

The utility model discloses a riveting tenon structure for controlling a molded line of a volute of a fan, relates to the technical field of fan processing, and aims to solve the problem that the molding of the molded line of the volute is influenced due to the fact that the volute is not easy to be tightly matched in the installation in the prior art, and the riveting tenon structure comprises the volute, a volute plate, an assembling bolt and an assembling bolt, and assembling frames are symmetrically arranged on the left side and the right side of the inner wall of a curved surface section of the volute; according to the utility model, the mounting structure of the fan volute is optimally designed, so that the molded line of the volute is accurately formed, and the main principle is that the assembling frames are uniformly mounted on the curved surface section of the volute, and the inner sealing strip at the edge of the volute plate is provided with the notch and the bolt sleeve; the volute and the volute plate are tightly connected through the pull rod, the connecting frame and the assembly bolts, meanwhile, the adjusting holes evenly distributed in the sealing strip in the volute plate are matched with the through holes of the outlet section, connection is conducted through the assembly bolts, the whole volute is more compact, the shape and position are more accurate, and therefore the air supply direction and efficiency of the draught fan are effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of fan processing, in particular to a rivet-tenon structure for controlling the profile of a fan volute. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is a driven fluid machine. Fans are widely used in ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, ventilation and air induction of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and conveying grains, wind tunnel wind sources and inflation and propulsion of hovercraft, etc.

[0003] The main structural components of the fan are the impeller, casing, air inlet, bracket, motor, pulley, coupling, muffler, transmission bearings, etc. Considering the direction and efficiency of air supply, the casing of the fan is generally an irregular volute shape, consisting of a volute and volute plates on both sides. During assembly, the arc surface of the volute is not easy to fit closely with the volute plates on both sides due to the processing accuracy, which affects the forming of the fan volute profile and thus affects the quality of the fan.

[0004] Therefore, the present application provides a rivet structure for controlling the fan volute profile to meet the needs. Utility Model Content

[0005] The purpose of this application is to provide a rivet structure for controlling the profile of a fan volute, so as to improve the matching accuracy between the volute and the volute plate and enhance the quality of the fan.

[0006] To achieve the above objectives, the present application provides the following technical solutions: a rivet-tenon structure for controlling the profile of a fan volute, comprising:

[0007] The volute further comprises a curved section and an outlet section, wherein through holes are symmetrically and evenly provided on the left and right sides of the curved section and the outlet section, and assembly racks are symmetrically provided on the left and right sides of the inner wall of the curved section, wherein the assembly racks are multiple and evenly distributed, and the positions of the assembly racks correspond to the positions of the through holes;

[0008] Volute plates, the volute plates are provided in two groups and are symmetrically assembled on the left and right sides of the volute, the edges of the volute plates are provided with inner seals, the inner seals are provided with notches, the notches are matched with the assembly frame, the inner seals are evenly provided with bolt sleeves, and the bolt sleeves are adapted to the through holes;

[0009] The assembly frame further includes a pull rod and a connecting frame, both ends of the connecting frame are connected to the volute through the pull rod, the pull rod is adapted to the notch, an assembly bolt is inserted into the through hole on the curved surface segment, the assembly bolt is threadedly connected to the bolt sleeve, and the end of the assembly bolt abuts on the connecting frame, and the assembly bolt is used to fasten the inner seal and the volute;

[0010] The inner seal strip is provided with adjustment holes, which are in multiple groups and matched with the through holes on the outlet section. Assembly bolts are inserted into the adjustment holes and the through holes, and assembly nuts are threadedly connected to the assembly bolts.

[0011] Preferably, the bolt sleeve is connected to the volute plate, and reinforcing ribs are symmetrically provided on the bolt sleeve and connected to the inner sealing strip.

[0012] Preferably, a rotating block is rotatably connected to the connecting frame, and the end of the assembling bolt abuts against the rotating block.

[0013] Preferably, the adjustment hole is a waist-shaped hole to facilitate fine-tuning.

[0014] Preferably, the assembly nut is located inside the adjustment hole, and auxiliary blocks are symmetrically provided on both sides of the adjustment hole, and the auxiliary blocks are used to assist in assembling the assembly bolt and the assembly nut.

[0015] In summary, the technical effects and advantages of the utility model are:

[0016] The utility model realizes precise forming of the volute profile by optimizing the design of the installation structure of the fan volute. The main principle is to evenly open through holes on the volute, evenly install assembly frames on the curved surface section, and provide notches and bolt sleeves on the inner seal strips at the edge of the volute plate. The volute and the volute plate are tightly connected by pull rods, connecting frames and assembly bolts. At the same time, the evenly distributed adjustment holes on the inner seal strips of the volute plate are adapted to the through holes of the outlet section, and are connected by assembly bolts, so that the volute as a whole is tighter and the shape and position are more precise, thereby effectively improving the air supply direction and efficiency of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a front view structural diagram of the utility model;

[0020] Figure 3 This is a schematic diagram of the AA cross-sectional structure of the present utility model;

[0021] Figure 4 This is an enlarged structural diagram of point B of the present utility model;

[0022] Figure 5 This is a schematic diagram of the volute structure of the utility model;

[0023] Figure 6 This is a schematic diagram of the volute plate structure of the utility model;

[0024] Figure 7 This is an enlarged structural diagram of point C of the present invention.

[0025] In the figure: 1. Volute; 2. Volute plate; 3. Assembly bolt; 4. Assembly bolt; 10. Pull rod; 11. Connecting frame; 12. Rotating block; 20. Inner seal; 21. Bolt sleeve; 22. Reinforcement rib; 23. Adjustment hole; 24. Auxiliary block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] Example: Reference Figure 1-7 The rivet tenon structure for controlling the profile of the fan volute shown in the figure includes a volute 1, which also includes a curved section and an outlet section. The curved section and the outlet section are symmetrically and evenly provided with through holes on the left and right sides. The left and right sides of the inner wall of the curved section are symmetrically provided with assembly racks. There are multiple groups of assembly racks and they are evenly distributed. The assembly racks correspond to the positions of the through holes. Two groups of volute plates 2 are symmetrically assembled on the left and right sides of the volute 1. The edges of the volute plates 2 are provided with inner seals 20. The inner seals 20 are provided with notches. The notches match the assembly racks. Bolt sleeves 21 are evenly provided on the inner seals 20. The bolt sleeves 21 are aligned with the through holes. adapted; the assembly frame also includes a pull rod 10 and a connecting frame 11. Both ends of the connecting frame 11 are connected to the volute 1 through the pull rod 10. The pull rod 10 is adapted to the notch. The through hole on the curved section is inserted with an assembly bolt 3. The assembly bolt 3 is threadedly connected to the bolt sleeve 21, and the end of the assembly bolt 3 abuts on the connecting frame 11; an adjustment hole 23 is provided on the inner seal 20, and there are multiple groups of adjustment holes 23 and the adjustment holes 23 are adapted to the through holes on the outlet section. Assembly bolts 4 are inserted in the adjustment holes 23 and the through holes, and assembly nuts are threadedly connected to the assembly bolts 4.

[0028] As an implementation method in this embodiment, in order to enhance the stability of the bolt sleeve 21, as shown in FIG. Figure 3 、 Figure 4 、 Figure 6 、 Figure 7 As shown, the bolt sleeve 21 is connected to the volute plate 2 , and reinforcing ribs 22 are symmetrically provided on the bolt sleeve 21 to be connected to the inner sealing strip 20 .

[0029] As an implementation method in this embodiment, in order to facilitate the rotation and installation of the assembly bolt 3, as shown in FIG. Figure 4 、 Figure 5 As shown, a rotating block 12 is rotatably connected to the connecting frame 11 , and the end of the assembly bolt 3 abuts against the rotating block 12 .

[0030] As an implementation method in this embodiment, in order to adapt to the deformation of the volute 1 at the air outlet during installation, as shown in FIG. Figure 6 、 Figure 7 As shown, the adjustment hole 23 is a waist-shaped hole.

[0031] As an implementation method in this embodiment, in order to facilitate the assembly of the assembly bolt 4 and the assembly nut, as shown in FIG. Figure 6 、 Figure 7 As shown, the assembly nut is located inside the adjustment hole 23 , and auxiliary blocks 24 are symmetrically provided on both sides of the adjustment hole 23 . The auxiliary blocks 24 are used to assist in assembling the assembly bolt 4 and the assembly nut.

[0032] Working principle of this utility model: When assembling the fan casing, first install a set of volute plates 2 on one side of the volute 1. When installing, align the pull rod 10 with the notch on the inner seal 20. Then use the assembly bolt 3 to insert it from the outside of the through hole on the volute 1 and rotate it into the corresponding bolt sleeve 21 until the end of the assembly bolt 3 extends out of the bolt sleeve 21 and the end of the assembly bolt 3 presses on the rotating block 12, squeeze the connecting frame 11 inward, and drive the volute 1 to fit on the inner seal 20 through the pull rod 10. In this way, the assembly bolt 3 is installed together with the bolt sleeve 21 on the volute plate 2, so that the volute 1 is close to the inner seal 20, so that the volute line reaches The molding effect in the design is then achieved, and then the assembly bolt 4 is used to pass through the through hole and the adjustment hole 23 at the air outlet of the volute 1, and the assembly nut is used in conjunction with the assembly bolt 4 to install and tighten the volute 1 and the volute plate 2 at the air outlet. The waist-shaped adjustment hole 23 can solve the problem that the through hole and the adjustment hole 23 cannot be aligned after a slight deformation occurs when the volute 1 is installed. The auxiliary block 24 can clamp the assembly nut from both sides during installation to improve the convenience of assembly. The reinforcement ribs 22 on both sides of the bolt sleeve 21 can enhance the structural strength of the bolt sleeve 21 and improve the stability after installation. In this way, the two sets of volute plates 2 are assembled on both sides of the volute 1 to complete the installation.

[0033] The mechanical connection involved in the present invention is a common means used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, which belongs to common knowledge.

[0034] Components not described in detail herein are prior art.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A rivet structure for controlling the profile of a fan volute, characterized in that: include: A volute (1), the volute (1) further comprising a curved section and an outlet section, through holes being symmetrically and evenly provided on the left and right sides of the curved section and the outlet section, and assembly racks being symmetrically provided on the left and right sides of the inner wall of the curved section, wherein the assembly racks are multiple and evenly distributed, and the assembly racks correspond to the positions of the through holes; Volute plates (2), the volute plates (2) having two groups and symmetrically assembled on the left and right sides of the volute (1), the edges of the volute plates (2) being provided with inner seals (20), the inner seals (20) being provided with notches, the notches being matched with the assembly frame, the inner seals (20) being evenly provided with bolt sleeves (21), the bolt sleeves (21) being matched with the through holes; The assembly frame further includes a pull rod (10) and a connecting frame (11), both ends of the connecting frame (11) are connected to the volute (1) via the pull rod (10), the pull rod (10) is adapted to the notch, an assembly bolt (3) is inserted into the through hole on the curved surface segment, the assembly bolt (3) is threadedly connected to the bolt sleeve (21), and the end of the assembly bolt (3) abuts against the connecting frame (11); The inner sealing strip (20) is provided with adjustment holes (23), the adjustment holes (23) are provided in multiple groups, and the adjustment holes (23) are adapted to the through holes on the outlet section. Assembly bolts (4) are inserted into the adjustment holes (23) and the through holes, and the assembly bolts (4) are threadedly connected with assembly nuts.

2. A rivet structure for controlling the profile of a fan volute according to claim 1, characterized in that: The bolt sleeve (21) is connected to the volute plate (2), and reinforcing ribs (22) are symmetrically provided on the bolt sleeve (21) and connected to the inner sealing strip (20).

3. The rivet structure for controlling the profile of a fan volute according to claim 1, characterized in that: A rotating block (12) is rotatably connected to the connecting frame (11), and the end of the assembly bolt (3) abuts against the rotating block (12).

4. The rivet structure for controlling the profile of a fan volute according to claim 1, characterized in that: The adjusting hole (23) is a waist-shaped hole.

5. The rivet structure for controlling the profile of a fan volute according to claim 4, characterized in that: The assembly nut is located inside the adjustment hole (23), and auxiliary blocks (24) are symmetrically provided on both sides of the adjustment hole (23). The auxiliary blocks (24) are used to assist in assembling the assembly bolt (4) and the assembly nut.

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