PP diagonal flow fan for air exhaust of laboratory

Abstract

The utility model relates to the technical field of laboratory equipment, in particular to a PP diagonal flow fan for laboratory exhaust, which comprises a diagonal flow fan body, a fan base and a mounting base. And the angle adjusting assembly comprises a fixing frame fixedly connected to the outer wall of the oblique flow fan body, the lower end of the fixing frame is fixedly connected with a rotating column, the rotating column is rotationally connected with the upper end face of the fan base through an annular bearing, and the outer wall of the rotating column is fixedly connected with a polygonal annular plate. According to the diagonal flow fan, the rotation angle of the diagonal flow fan body can be rapidly adjusted, so that the ventilation angle of the diagonal flow fan body in a large range can be conveniently adjusted, the universality of the diagonal flow fan is improved, rapid disassembly and assembly of the fan base and the installation base can be achieved, and the disassembly, maintenance and use convenience of the diagonal flow fan can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of laboratory equipment technology, specifically to a PP diagonal flow fan for laboratory exhaust. Background Technology

[0002] PP diagonal flow fans are ventilation devices made of polypropylene (PP) material. Their impellers direct airflow at an angle. PP diagonal flow fans play a crucial role in laboratories, effectively removing various harmful gases, chemical odors, dust, and other pollutants generated during experiments, maintaining good air quality in the laboratory. The PP material makes the fans corrosion-resistant, suitable for laboratory environments containing acids, alkalis, and other chemicals, providing reliable ventilation for the health of laboratory personnel and the accurate conduct of experiments.

[0003] Existing technologies often have the following problems when used:

[0004] As an important ventilation device in laboratories, the ventilation angle of PP mixed flow fans is usually fixed during installation, which makes it inconvenient to adjust the ventilation angle of PP mixed flow fans over a wide range, thus resulting in poor versatility of PP mixed flow fans.

[0005] In addition, PP mixed flow fans are usually fixed at multiple points using relatively independent bolt or plug-in structures during installation. However, this installation and fixing method results in low disassembly and assembly efficiency of PP mixed flow fans, affecting the ease of disassembly, maintenance and use of PP mixed flow fans. Utility Model Content

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a PP mixed-flow fan for laboratory exhaust, which can effectively solve the problems of the inconvenience of adjusting the ventilation angle of the PP mixed-flow fan over a large range, resulting in poor versatility of the PP mixed-flow fan, as well as the low disassembly and assembly efficiency of the PP mixed-flow fan, which affects the convenience of disassembly, maintenance and use of the PP mixed-flow fan.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model provides a PP diagonal flow fan for laboratory exhaust, comprising:

[0009] Mixed-flow fan body, fan base, and mounting base;

[0010] An angle adjustment assembly includes a fixed frame fixedly connected to the outer wall of the mixed-flow fan body, a rotating column fixedly connected to the lower end of the fixed frame, the rotating column being rotatably connected to the upper end face of the fan base via an annular bearing, a polygonal annular plate fixedly connected to the outer wall of the rotating column, a straight plate fixedly connected to the outer wall of the fan base, a first fixing screw threaded through the straight plate, and a plurality of threaded sleeves arranged in a ring fixedly connected to the outer wall of the polygonal annular plate, the first fixing screw being matched with the threaded sleeves.

[0011] The mounting base has a threaded connection on its side wall for easy assembly and disassembly.

[0012] Furthermore, both the fan base and the mounting base are concave in shape, and the outer wall of the fan base matches the inner side of the mounting base.

[0013] Furthermore, the convenient assembly and disassembly component includes a second fixing screw that is threadedly connected to the side wall of the mounting base. Both the mounting base and the fan base have threaded through holes on their side walls, and the second fixing screw is matched with the threaded through holes.

[0014] Furthermore, the convenient assembly and disassembly assembly also includes a support plate rotatably connected to the outer wall of the second fixing screw via a bidirectional damping bearing. Several plug-in rods are fixedly connected to the side of the support plate facing the mounting base. The mounting base and the fan base sidewalls are provided with plug-in through holes, and the plug-in rods match the plug-in through holes.

[0015] Furthermore, both the first and second fixing screws are fixedly connected to an adjustment knob at their ends.

[0016] Furthermore, an annular support plate is fixedly connected to the upper part of the outer peripheral wall of the rotating column, and the lower end face of the annular support plate is in contact with the upper end face of the fan base and the mounting base.

[0017] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0018] This invention includes an angle adjustment component. By rotating the main body of the mixed-flow fan, the rotating column rotates a certain angle relative to the fan base. The corresponding threaded sleeve on the polygonal annular plate aligns with the first fixing screw. The rotating column is limited and fixed through the threaded engagement of the first fixing screw and the threaded sleeve, thus allowing for quick adjustment of the rotation angle of the mixed-flow fan body. This enables adjustment of the ventilation angle of the mixed-flow fan body over a wide range, improving the versatility of the mixed-flow fan. Furthermore, a convenient disassembly and assembly component is included, allowing the fan base and the inner side of the mounting base to be placed accordingly. After installation, by driving the No. 2 fixing screw to rotate, the No. 2 fixing screw can sequentially engage with the threaded through holes on the mounting base and the fan base. During this process, the No. 2 fixing screw can drive the support plate to gradually move closer to the mounting base, so that several plug-in rods on the support plate can be simultaneously inserted into the plug-in through holes, so as to quickly install and fix the fan base at multiple points. When disassembling the fan base, simply drive the No. 2 fixing screw to rotate in the opposite direction. By realizing the quick assembly and disassembly of the fan base and the mounting base, the convenience of disassembly, maintenance and use of the mixed flow fan can be effectively improved. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the fan base and mounting base in this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the convenient disassembly and assembly component in this utility model;

[0023] Figure 4 This is a three-dimensional structural diagram of the fan base in this utility model;

[0024] Reference numerals in the attached drawings: 1. Mixed-flow fan body; 2. Fan base; 3. Mounting base; 4. Fixed frame; 5. Rotating column; 6. Polygonal annular plate; 7. Straight plate; 8. No. 1 fixing screw; 9. Threaded sleeve; 10. No. 2 fixing screw; 11. Threaded through hole; 12. Support plate; 13. Insert rod; 14. Insert through hole; 15. Adjusting knob; 16. Annular support plate. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] The present invention will be further described below with reference to the embodiments.

[0027] Example: Refer to Figures 1 to 4 A PP diagonal flow fan for laboratory exhaust, comprising:

[0028] The fan body 1, fan base 2, mounting base 3, and angle adjustment assembly are provided. Both fan base 2 and mounting base 3 are concave in shape, and the outer wall of fan base 2 matches the inner side of mounting base 3. The angle adjustment assembly includes a fixed frame 4 fixedly connected to the outer wall of fan body 1. A rotating column 5 is fixedly connected to the lower end of the fixed frame 4. An annular support plate 16 is fixedly connected to the upper position of the outer peripheral wall of the rotating column 5. The lower end face of the annular support plate 16 is in contact with the upper end face of fan base 2 and mounting base 3. The rotating column 5 is rotatably connected to the upper end face of fan base 2 through an annular bearing. A polygonal annular plate 6 is fixedly connected to the outer wall of the rotating column 5. A straight plate 7 is fixedly connected to the outer wall of fan base 2. A first fixing screw 8 is threaded through the straight plate 7. Several threaded sleeves 9 arranged in a ring are fixedly connected to the outer wall of the polygonal annular plate 6. The first fixing screw 8 is matched with the threaded sleeve 9.

[0029] By rotating the main body 1 of the mixed flow fan, the rotating column 5 rotates at a certain angle relative to the fan base 2. The corresponding threaded sleeve 9 on the rotated polygonal annular plate 6 is aligned with the first fixing screw 8. By rotating the first fixing screw 8, the rotating column 5 can be limited and fixed through the threaded engagement between the first fixing screw 8 and the threaded sleeve 9. This allows for quick adjustment of the rotation angle of the main body 1 of the mixed flow fan, enabling adjustment of the ventilation angle of the main body 1 of the mixed flow fan over a wider range, which is beneficial to improving the versatility of the mixed flow fan.

[0030] Reference Figures 1 to 4The mounting base 3 has a convenient disassembly and assembly component connected by a through thread on its side wall. The convenient disassembly and assembly component includes a second fixing screw 10 that is threaded to the side wall of the mounting base 3. The ends of the first fixing screw 8 and the second fixing screw 10 are both fixedly connected to an adjustment knob 15. The side walls of the mounting base 3 and the fan base 2 are both provided with threaded through holes 11. The second fixing screw 10 is matched with the threaded through holes 11. The convenient disassembly and assembly component also includes a support plate 12 that is rotatably connected to the outer wall of the second fixing screw 10 through a bidirectional damping bearing. Several plug-in rods 13 are fixedly connected to the side of the support plate 12 facing the mounting base 3. The side walls of the mounting base 3 and the fan base 2 are both provided with plug-in through holes 14. The plug-in rods 13 are matched with the plug-in through holes 14.

[0031] When installing and using the fan base 2, place it inside the mounting base 3. By driving the second fixing screw 10 to rotate, the second fixing screw 10 sequentially engages with the threaded through holes on the mounting base 3 and the fan base 2. During this process, the second fixing screw 10 can drive the support plate 12 to gradually move closer to the mounting base 3, so that several plug-in rods 13 on the support plate 12 can be simultaneously inserted into the plug-in through holes 14, so as to quickly install and fix the fan base 2 at multiple points. When disassembling and using the fan base 2, drive the second fixing screw 10 to rotate in the opposite direction, so that the second fixing screw 10 and several plug-in rods 13 are no longer fixed to the fan base 2. By realizing the quick assembly and disassembly of the fan base 2 and the mounting base 3, the convenience of disassembly, maintenance and use of the mixed flow fan can be effectively improved.

[0032] The working principle of this utility model is as follows:

[0033] When in use, if it is necessary to adjust the ventilation angle of the mixed flow fan body 1 over a large range according to ventilation requirements, the mixed flow fan body 1 can be rotated so that the rotating column 5 rotates at a certain angle relative to the fan base 2. The corresponding threaded sleeve 9 on the rotated polygonal annular plate 6 is aligned with the first fixing screw 8. The first fixing screw 8 is rotated, and the rotating column 5 can be limited and fixed through the threaded engagement between the first fixing screw 8 and the threaded sleeve 9. This allows for quick adjustment of the rotation angle of the mixed flow fan body 1, so as to adjust the ventilation angle of the mixed flow fan body 1 over a large range, which is beneficial to improving the versatility of the mixed flow fan.

[0034] When installing and using the mixed-flow fan, i.e., when installing the fan base 2, place the fan base 2 inside the mounting base 3. By driving the second fixing screw 10 to rotate, the second fixing screw 10 sequentially engages with the threaded through holes on the mounting base 3 and the fan base 2. During this process, the second fixing screw 10 can drive the support plate 12 to gradually move closer to the mounting base 3, so that several plug-in rods 13 on the support plate 12 can be simultaneously inserted into the plug-in through holes 14, so as to quickly install and fix the fan base 2 at multiple points. When disassembling and using the fan base 2, drive the second fixing screw 10 to rotate in the opposite direction, so that the second fixing screw 10 and several plug-in rods 13 are no longer fixed to the fan base 2. By realizing the quick assembly and disassembly of the fan base 2 and the mounting base 3, the convenience of disassembly, maintenance and use of the mixed-flow fan can be effectively improved.

[0035] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A PP diagonal flow fan for laboratory exhaust, characterized in that, include: The mixed-flow fan body (1), the fan base (2) and the mounting base (3); An angle adjustment assembly includes a fixed frame (4) fixedly connected to the outer wall of the mixed flow fan body (1), a rotating column (5) fixedly connected to the lower end of the fixed frame (4), the rotating column (5) being rotatably connected to the upper end face of the fan base (2) through an annular bearing, a polygonal annular plate (6) fixedly connected to the outer wall of the rotating column (5), a straight plate (7) fixedly connected to the outer wall of the fan base (2), a first fixing screw (8) threadedly connected through the straight plate (7), and a plurality of threaded sleeves (9) arranged in annular pattern fixedly connected to the outer wall of the polygonal annular plate (6), the first fixing screw (8) and the threaded sleeves (9) being matched. The mounting base (3) has a threaded connection on its side wall with a convenient assembly and disassembly component.

2. The PP diagonal flow fan for laboratory exhaust according to claim 1, characterized in that, Both the fan base (2) and the mounting base (3) are concave in shape, and the outer wall of the fan base (2) matches the inner side of the mounting base (3).

3. A PP diagonal flow fan for laboratory exhaust according to claim 1, characterized in that, The convenient assembly and disassembly assembly includes a second fixing screw (10) that is threaded through and connected to the side wall of the mounting base (3). The side walls of the mounting base (3) and the fan base (2) are provided with threaded through holes (11). The second fixing screw (10) is matched with the threaded through holes (11).

4. A PP diagonal flow fan for laboratory exhaust according to claim 3, characterized in that, The convenient assembly and disassembly assembly also includes a support plate (12) rotatably connected to the outer wall of the second fixing screw (10) via a bidirectional damping bearing. Several plug-in rods (13) are fixedly connected to the side of the support plate (12) facing the mounting base (3). The mounting base (3) and the fan base (2) are both provided with plug-in through holes (14). The plug-in rods (13) are matched with the plug-in through holes (14).

5. A PP diagonal flow fan for laboratory exhaust according to claim 3, characterized in that, The ends of the first fixing screw (8) and the second fixing screw (10) are both fixedly connected with adjustment knobs (15).

6. A PP diagonal flow fan for laboratory exhaust according to claim 1, characterized in that, An annular support plate (16) is fixedly connected to the upper part of the outer peripheral wall of the rotating column (5). The lower end face of the annular support plate (16) is in contact with the upper end face of the fan base (2) and the mounting base (3).

Images