Negative pressure fan impeller structure

Abstract

The utility model discloses a negative pressure fan impeller structure which is arranged on a machine body, the inner wall of the machine body is fixedly connected with a bearing plate, the left side face of the bearing plate is fixedly connected with a power base, the output end of the power base is fixedly connected with a connecting base, and the outer surface of the connecting base is fixedly connected with two sets of symmetrical installation bases. Connecting grooves are formed in the side faces, away from each other, of the mounting bases, a connecting column is movably connected to the interior of each connecting groove, blades are fixedly connected to the ends, away from each other, of the connecting columns, and positioning columns are fixedly connected to the front faces of the blades. According to the device, through cooperation of the connecting grooves and the connecting columns, the blades can be independently replaced, the phenomenon that when the blades are deformed and damaged, the maintenance cost is too high due to the fact that the blades cannot be independently replaced is avoided, and through cooperation of the limiting rings and the mounting pressing plates, secondary positioning can be conducted on mounting of the blades; and the phenomenon that the blades easily fall off due to insufficient firmness is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of negative pressure fans, in particular to an impeller structure of a negative pressure fan. Background Art

[0002] Negative pressure fans use the cooling principle of air convection and negative pressure ventilation. They naturally inhale fresh air from the opposite door or window of the installation location, and quickly force the hot and stuffy air in the room to be discharged outdoors. Any poor ventilation problem can be improved by this machine, and the cooling and ventilation effect can reach 90%-97%. The whole machine adopts CAD / CAM design, and has the characteristics of low investment cost, large air volume, low noise, low energy consumption, stable operation, long life, and high efficiency. The shutters open and close automatically to prevent dust and water, and are beautiful and generous; they can blow air or exhaust air, and are the best choice for cooling and ventilation in modern workshops. Environmentally friendly and energy-saving negative pressure fans will become the mainstream of the ventilation and cooling equipment market.

[0003] According to a negative pressure fan impeller structure disclosed in Chinese patent number CN219549196, the wheel assembly includes a chassis and a top cover, and a groove is fixedly provided on the top of the chassis, and a socket is symmetrically fixedly provided on the surface of the chassis, and the inner cavity of the groove is symmetrically fixedly connected with a limit rod, and the surface of the mounting plate is symmetrically fixedly provided with mounting grooves, and the surfaces of the extrusion block and the top cover and the inner cavity of the groove are symmetrically fixedly provided with bolt holes. During the operation of the device, it is easy to break and deform due to contact with foreign objects. Such phenomenon requires replacement of the deformed or damaged impeller, but the traditional impeller mounting structure requires replacement of the impeller as a whole, and damaged blades cannot be replaced individually, thereby greatly increasing the maintenance cost of the device. For this reason, we propose a negative pressure fan impeller structure to solve the above problem. Utility Model Content

[0004] The purpose of the utility model is to provide a negative pressure fan impeller structure to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A negative pressure fan impeller structure is arranged on a body, the inner wall of the body is fixedly connected with a bearing plate, the left side of the bearing plate is fixedly connected with a power seat, the output end of the power seat is fixedly connected with a connecting seat, the outer surface of the connecting seat is fixedly connected with two groups of symmetrical mounting seats, each group of the mounting seats is provided with a connecting groove on a side away from each other, each of the connecting grooves is movably connected with a connecting column, each group of the connecting columns is fixedly connected with a blade at one end away from each other, and each group of the blades is fixedly connected with a positioning column on the front side, the left side of the connecting seat is fixedly connected with a threaded column, the outer surface of the threaded column is sleeved with a limiting ring, the right side of the limiting ring is in contact with the left side of the connecting seat, and the outer surface of the limiting ring is fixedly connected with two groups of symmetrical mounting pressure plates, the right side of each group of the mounting pressure plates is in contact with the left side of the blade, the right side of each group of the mounting pressure plates is provided with a positioning hole, and the positioning column is located inside the positioning hole, the outer surface of the threaded column is threadedly connected with a fixing ring, and the right side of the fixing ring is in contact with the left side of the limiting ring.

[0007] In a further embodiment, symmetrical rubber protective pads are provided below the machine body, and the upper surface of each of the rubber protective pads is in contact with the bottom surface of the machine body.

[0008] In a further embodiment, symmetrical limiting plates are provided inside the body, and the side surfaces of the two limiting plates that are away from each other are fixedly connected to the inner top wall and the inner bottom wall of the body respectively.

[0009] In a further embodiment, two groups of symmetrical anti-skid finger pads are provided inside the body, and the right side surface of each of the anti-skid finger pads is fixedly connected to the left side surface of the blade.

[0010] In a further embodiment, force bars are provided on both the left and right sides of the machine body, and the side surfaces of the two force bars close to each other are fixedly connected to the left and right side surfaces of the machine body respectively.

[0011] In a further embodiment, a buffer pad is fixedly connected to the inner bottom wall of each connection groove, and a side surface of each group of buffer pads that is away from each other is in contact with an end of each group of connection columns that is close to each other.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] Through the cooperation of the connecting groove and the connecting column, the device can replace the blades individually, avoiding the phenomenon of excessive maintenance costs due to the inability to replace the blades individually when the blades are deformed and damaged. By setting the cooperation of the limit ring and the mounting pressure plate, the installation of the blades can be re-positioned, avoiding the phenomenon of the blades easily falling off due to insufficient firmness. Through the cooperation of the threaded column and the fixing ring, the workers can disassemble the blades more conveniently, avoiding the inconvenience of the workers when disassembling them. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the machine body in the utility model.

[0015] Figure 2 It is a schematic diagram of the internal structure of the machine body in the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the connecting seat in the utility model.

[0017] Figure 4 For this utility model Figure 3 A schematic diagram of the enlarged structure in the middle.

[0018] In the figure: 1. body; 2. force bar; 3. limit plate; 4. load-bearing plate; 5. blade; 6. rubber protective pad; 7. mounting pressure plate; 8. anti-slip finger pad; 9. mounting seat; 10. connecting column; 11. positioning hole; 12. fixing ring; 13. threaded column; 14. limit ring; 15. connecting seat; 16. power seat; 17. buffer pad; 18. connecting groove; 19. positioning column. DETAILED DESCRIPTION

[0019] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0021] 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.

[0022] See also Figure 1-4 In the utility model, a negative pressure fan impeller structure is arranged on a machine body 1, the inner wall of the machine body 1 is fixedly connected with a bearing plate 4, the left side of the bearing plate 4 is fixedly connected with a power seat 16, the output end of the power seat 16 is fixedly connected with a connecting seat 15, and the outer surface of the connecting seat 15 is fixedly connected with two groups of symmetrical mounting seats 9, and each group of mounting seats 9 is provided with a connecting groove 18 on a side away from each other, and each connecting groove 18 is movably connected with a connecting column 10 inside, and each group of connecting columns 10 is fixedly connected with a blade 5 on one end away from each other, and each group of blades 5 is fixedly connected with a positioning column 19 on the front side, and the left side of the connecting seat 15 is fixedly connected with a threaded column 13, and the outer surface of the threaded column 13 is sleeved with a limiting ring 14 The right side surface of the limiting ring 14 contacts the left side surface of the connecting seat 15, and the outer surface of the limiting ring 14 is fixedly connected with two groups of symmetrical mounting pressure plates 7, and the right side surface of each group of mounting pressure plates 7 contacts the left side surface of the blade 5. A positioning hole 11 is opened on the right side surface of each group of mounting pressure plates 7, and the positioning column 19 is located inside the positioning hole 11. The outer surface of the threaded column 13 is threadedly connected with a fixing ring 12, and the right side surface of the fixing ring 12 contacts the left side surface of the limiting ring 14. The blade 5 is extracted by using the anti-slip finger pad 8, and a new blade 5 is installed, thereby achieving the purpose of replacing the blade 5 individually, avoiding the phenomenon that the traditional device cannot replace the blade 5 individually and the maintenance cost is too high.

[0023] Symmetrical rubber protective pads 6 are provided at the bottom of the body 1, and the upper surface of each rubber protective pad 6 is in contact with the bottom surface of the body 1, which can effectively protect the body 1 when it is placed, and prevent the body 1 from being damaged due to direct contact with the ground when it is placed. Symmetrical limit plates 3 are provided inside the body 1, and the side surfaces of the two limit plates 3 that are away from each other are fixedly connected to the inner top wall of the body 1 and the inner bottom wall of the body 1 respectively, which can limit and guide the installation of part of the structure of the body 1, and prevent the worker from installing the body 1 out of position and causing damage when assembling the body 1. Two sets of symmetrical anti-skid finger pads 8 are provided inside the body 1, and the right side of each anti-skid finger pad 8 is fixedly connected to the left side of the blade 5, which can make the worker's holding of the blade 5 more stable and prevent the worker from slipping when holding it.

[0024] Stress bars 2 are provided on the left and right sides of the body 1, and the sides of the two stress bars 2 that are close to each other are fixedly connected to the left and right sides of the body 1 respectively, which can provide the required stress points for workers to carry the body 1, avoiding the inconvenience caused by lack of stress points when workers move it. The inner bottom wall of each connecting groove 18 is fixedly connected with a buffer pad 17, and the sides of each group of buffer pads 17 that are far away from each other are respectively in contact with the ends of each group of connecting columns 10 that are close to each other, which can effectively protect the connecting columns 10 and avoid the phenomenon that the connecting columns 10 are easily damaged due to direct contact with the connecting grooves 18.

[0025] The working principle of the utility model is:

[0026] When in use, the device is first connected to a power source and controlled by a control switch. When a worker needs to replace a damaged blade 5, the worker removes the damaged blade 5 by rotating the fixing ring 12, removes the limiting ring 14 and the mounting plate 7, and then uses the anti-slip finger pad 8 to extract the blade 5 and install a new blade 5, thereby achieving the purpose of replacing the blade 5 individually and avoiding the problem that the traditional device cannot replace the blade 5 individually and the maintenance cost is too high.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0028] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A negative pressure fan impeller structure, characterized in that: The machine body (1) is provided with a bearing plate (4) fixedly connected to the inner wall of the machine body (1), a power seat (16) is fixedly connected to the left side of the bearing plate (4), an output end of the power seat (16) is fixedly connected to a connecting seat (15), an outer surface of the connecting seat (15) is fixedly connected to two groups of symmetrical mounting seats (9), a side of each group of mounting seats (9) away from each other is provided with a connecting groove (18), a connecting column (10) is movably connected inside each of the connecting grooves (18), a blade (5) is fixedly connected to the end of each group of connecting columns (10) away from each other, a positioning column (19) is fixedly connected to the front of each group of blades (5), and the connecting seat (15) is fixedly connected to the outer surface of the connecting seat (15). ) is fixedly connected to the left side of the blade (5), a threaded column (13) is sleeved on the outer surface of the threaded column (13), the right side of the limit ring (14) is in contact with the left side of the connecting seat (15), and the outer surface of the limit ring (14) is fixedly connected to two groups of symmetrical mounting plates (7), the right side of each group of mounting plates (7) is in contact with the left side of the blade (5), and the right side of each group of mounting plates (7) is provided with a positioning hole (11), and the positioning column (19) is located inside the positioning hole (11), and the outer surface of the threaded column (13) is threadedly connected to a fixing ring (12), and the right side of the fixing ring (12) is in contact with the left side of the limit ring (14).

2. The negative pressure fan impeller structure according to claim 1, characterized in that: Symmetrical rubber protective pads (6) are provided below the machine body (1), and the upper surface of each rubber protective pad (6) is in contact with the bottom surface of the machine body (1).

3. The negative pressure fan impeller structure according to claim 1, characterized in that: Symmetrical limiting plates (3) are provided inside the machine body (1), and the side surfaces of the two limiting plates (3) that are away from each other are respectively fixedly connected to the inner top wall of the machine body (1) and the inner bottom wall of the machine body (1).

4. The negative pressure fan impeller structure according to claim 1, characterized in that: Two sets of symmetrical anti-skid finger pads (8) are provided inside the machine body (1), and the right side surface of each anti-skid finger pad (8) is fixedly connected to the left side surface of the blade (5).

5. The negative pressure fan impeller structure according to claim 1, characterized in that: The left and right sides of the machine body (1) are both provided with force bars (2), and the side surfaces of the two force bars (2) that are close to each other are respectively fixedly connected to the left and right side surfaces of the machine body (1).

6. The negative pressure fan impeller structure according to claim 1, characterized in that: The inner bottom wall of each connection groove (18) is fixedly connected to a buffer pad (17), and the side faces of each group of buffer pads (17) that are away from each other are in contact with the ends of each group of connection columns (10) that are close to each other.

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