Centrifugal fan hub with noise reduction mechanism

Abstract

The utility model relates to a centrifugal fan hub with a noise reduction mechanism, which belongs to the technical field of centrifugal fan hubs and comprises a hub body, a connecting plate is detachably mounted on one side of the hub body, a connecting rod is welded on one side of the connecting plate, and the connecting rod is used for being connected with a rotating end of a driving motor. A reminding structure is arranged on the connecting plate; the reminding structure comprises an alarm and a threaded pipe connected to the connecting plate in a threaded mode, a spring is installed on the inner side of the threaded pipe, and a feeler lever movably inserted into the threaded pipe is installed at one end of the spring. By arranging the reminding structure, when the bolt is loosened, the feeler lever continuously extrudes the hub body with the help of resilience force of the spring, the threaded pipe slightly moves, the feeler lever does not extrude the switch at the moment, then the switch controls the alarm to ring, and the effect of reminding workers to overhaul in time is achieved; and larger wind noise generated by unbalanced power in the rotating process of the hub body is avoided as much as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan hub technical field relates to a centrifugal fan hub with noise reduction mechanism. BACKGROUND

[0002] Centrifugal fan hub is the core part of fan impeller, it connects and fixes blade, makes blade can rotate along with the rotation of fan, hub not only plays the role of supporting blade, still influences the overall performance of fan through its design;

[0003] At present, centrifugal fan hub generally assembles on drive motor and uses, centrifugal fan hub is driven to rotate by drive motor, wherein, centrifugal fan hub is generally fixed by bolt, however, along with long -term use, bolt can produce loosening, thereby leading to unbalanced power of centrifugal fan hub in the process of rotation, produces greater wind noise;

[0004] To solve the above -mentioned problem, a centrifugal fan hub with noise reduction mechanism is provided in the application. UTILITY MODEL CONTENTS

[0005] The utility model provides a centrifugal fan hub with noise reduction mechanism in view of the technical problem existing in prior art.

[0006] The technical scheme that the utility model solves above -mentioned technical problem is as follows: a centrifugal fan hub with noise reduction mechanism, including hub body, the one side detachable mounting of hub body has the connecting plate, the one side welding of connecting plate has the connecting rod, the connecting rod is used for with drive motor rotating end connection;

[0007] The reminding structure is arranged on the connecting plate;

[0008] The reminding structure includes the alarm and the threaded tube that is screwed on the connecting plate, the inside of threaded tube is installed with spring, one end of spring is installed with the touch rod that is movably inserted in the inside of threaded tube, one side of touch rod is in contact with one side of hub body, the inside of threaded tube is installed with switch, one end of threaded tube is installed with power supply, power supply, switch and alarm are electrically connected, along with the lapse of time, bolt loosens, touch rod extrudes hub body by the resilience of spring, and threaded tube moves slightly, so that touch rod no longer extrudes switch, further make the switch control alarm ring, reach the effect that remind staff to overhaul in time.

[0009] The bolt is installed on the connecting plate, and the connecting plate is connected with the hub body by the bolt. The bolt is arranged to install the hub body.

[0010] The alarm is installed on the centrifugal fan.

[0011] The outer movable sleeve of the connecting rod is provided with a noise reduction shell, and the noise reduction shell is threadedly connected with the connecting plate.

[0012] The L-shaped hole is provided on the threaded pipe, and the dry plate is clamped on the threaded pipe through the L-shaped hole.

[0013] The dry plate is made of montmorillonite.

[0014] The utility model discloses the beneficial effect is:

[0015] When the bolt loosens, the touch rod continuously extrudes the hub body by the rebound force of the spring, and the threaded pipe slightly moves, at this time, the touch rod no longer extrudes the switch, and the switch controls the alarm to sound, which achieves the effect of reminding the staff to timely overhaul and avoids the power imbalance of the hub body during rotation to produce greater wind noise.

[0016] By inserting the dry plate into the L-shaped hole, the purpose of drying the threaded pipe is achieved, and the corrosion of the threaded pipe internal parts caused by the centrifugal fan to extract the gas with high humidity is avoided to affect the sensitivity. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The utility model discloses a whole structure schematic diagram of the device is shown.

[0018] Figure 2 The utility model discloses a connecting plate and its related part structure schematic diagram is shown.

[0019] Figure 3 The utility model discloses a threaded pipe internal structure section view schematic diagram is shown.

[0020] Figure 4 The utility model discloses a noise reduction shell structure schematic diagram is shown.

[0021] In the drawings, the component list represented by each sign is as follows:

[0022] 1, hub body;

[0023] 2, connecting plate;201, bolt;

[0024] 3, connecting rod;

[0025] 4, reminding structure;401, threaded pipe;402, spring;403, touch rod;404, switch;405, power supply;406, alarm;

[0026] 5, noise reduction shell;6, L-shaped hole;7, dry plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative work fall within the scope of protection of the present application.

[0028] In the description of the present application, the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0029] In the description of the present application, the term "for example" is used to indicate "as an example, illustration or explanation". Any embodiment described as "for example" in the present application is not necessarily interpreted as more preferred or more advantageous than other embodiments. The following description is given in order to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that a person skilled in the art can realize the present application without using these specific details. In other examples, well-known structures and processes will not be described in detail to avoid unnecessary details making the description of the present application obscure. Therefore, the present application is not intended to be limited to the shown embodiments, but is consistent with the broadest scope of principles and features disclosed in the present application.

[0030] Referring to Figures 1-3 A centrifugal fan hub with a noise reduction mechanism comprises a hub body 1, a connecting plate 2 is detachably installed on one side of the hub body 1, a connecting rod 3 is welded on one side of the connecting plate 2, the connecting rod 3 is used to be connected with the rotating end of a driving motor, when the driving motor is started, the rotation of the connecting rod 3 is driven, the rotation of the connecting rod 3 drives the rotation of the connecting plate 2, and the rotation of the connecting plate 2 drives the rotation of the hub body 1.

[0031] A bolt 201 is installed on the connecting plate 2, the connecting plate 2 is connected with the hub body 1 through the bolt 201, and the connecting plate 2 and the hub body 1 are installed and fixed by using the bolt 201.

[0032] The connection plate 2 is provided with a reminding structure 4, the reminding structure 4 comprises an alarm 406 and a threaded pipe 401 screwed on the connection plate 2, a spring 402 is mounted on the inner side of the threaded pipe 401, one end of the spring 402 is mounted with a touch rod 403 movably inserted into the inner side of the threaded pipe 401, one side of the touch rod 403 is in contact with one side of the hub body 1, a switch 404 is mounted on the inner side of the threaded pipe 401, and a power supply 405 is mounted on one end of the threaded pipe 401, the power supply 405, the switch 404 and the alarm 406 are electrically connected, and the alarm 406 is mounted on the centrifugal fan, according to the technical scheme, specifically, the installation mode is that the threaded pipe 401 is screwed on the connection plate 2 by rotating the threaded pipe 401, and one end of the touch rod 403 is attached to one side of the hub body 1, at this time, the spring 402 is compressed, the other end of the touch rod 403 presses the switch 404, and the alarm 406 is mounted on the centrifugal fan;

[0033] Wherein, with the passage of time, the bolt 201 loosens, at this time, the touch rod 403 continuously presses the hub body 1 by the rebound force of the spring 402, and the threaded pipe 401 moves slightly, so that the touch rod 403 no longer presses the switch 404, and the switch 404 controls the alarm 406 to ring, thereby achieving the effect of reminding the staff to repair in time, and avoiding greater wind noise caused by unbalanced power during rotation of the hub body 1;

[0034] Wherein, the specific model of the switch 404 is Omron micro-light touch switch B3F-4055, the specific model of the alarm 406 is SONITRON alarm SAS-2154-S, and the specific model of the power supply 405 is 6F22 battery, and the circuit connection mode between the three can be reasonably set according to actual conditions, and the signal transmission mode of the three is prior art.

[0035] Referring to Figure 2 and Figure 4 , the outer part of the connecting rod 3 is movably sleeved with a noise reduction shell 5, the noise reduction shell 5 is screwed on the connection plate 2, so as to cover the connection plate 2 and its related parts, thereby reducing the wind resistance generated during rotation.

[0036] Referring to Figure 3 , an L-shaped hole 6 is formed through the threaded pipe 401, and a drying plate 7 is clamped on the threaded pipe 401 through the L-shaped hole 6, and the specific material of the drying plate 7 is montmorillonite, according to the technical scheme, specifically, the drying plate 7 is inserted into the L-shaped hole 6, so as to realize the purpose of drying the inside of the threaded pipe 401, and to avoid the corrosion of the internal parts of the threaded pipe 401 caused by the centrifugal fan pumping and exhausting gas with high humidity, thereby affecting the sensitivity.

[0037] Working principle:

[0038] The centrifugal fan wheel hub with the noise reduction mechanism, when the bolt 201 is loose, the contact rod 403 continuously extrudes the wheel hub body 1 by the rebound force of the spring 402, and the threaded pipe 401 moves slightly, so that the contact rod 403 no longer extrudes the switch 404, thereby making the switch 404 control the alarm 406 to ring, achieving the effect of reminding the staff to repair in time, and avoiding that the wheel hub body 1 produces greater wind noise in the rotating process due to power imbalance.

[0039] The centrifugal fan wheel hub with the noise reduction mechanism, by inserting the drying plate 7 into the L-shaped hole 6, the purpose of drying in the threaded pipe 401 is achieved, and corrosion of the internal parts of the threaded pipe 401 due to the centrifugal fan pumping gas with high humidity is avoided as much as possible.

[0040] Although the preferred embodiments of the present application have been described, those skilled in the art who obtain the basic inventive concept can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0041] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A centrifugal fan hub with a noise reduction mechanism, comprising a hub body (1), characterized in that, A connecting plate (2) is detachably installed on one side of the hub body (1), and a connecting rod (3) is welded to one side of the connecting plate (2). The connecting rod (3) is used to connect to the rotating end of the drive motor. The connecting plate (2) is provided with a reminder structure (4); The reminder structure (4) includes an alarm (406) and a threaded tube (401) threaded to the connecting plate (2). A spring (402) is installed inside the threaded tube (401). A contact rod (403) is installed at one end of the spring (402) and is movably inserted into the threaded tube (401). One side of the contact rod (403) is in contact with one side of the hub body (1). A switch (404) is installed inside the threaded tube (401). A power supply (405) is installed at one end of the threaded tube (401). The power supply (405), the switch (404), and the alarm (406) are electrically connected.

2. A centrifugal fan hub with a noise reduction mechanism according to claim 1, characterized in that, Bolts (201) are installed on the connecting plate (2), and the connecting plate (2) is connected to the hub body (1) by bolts (201).

3. A centrifugal fan hub with a noise reduction mechanism according to claim 1, characterized in that, The alarm (406) is installed on the centrifugal fan.

4. A centrifugal fan hub with a noise reduction mechanism according to claim 1, characterized in that, The connecting rod (3) is movably fitted with a noise reduction shell (5), which is threadedly connected to the connecting plate (2).

5. A centrifugal fan hub with a noise reduction mechanism according to claim 1, characterized in that, An L-shaped hole (6) is provided through the threaded tube (401), and a drying plate (7) is clamped to the threaded tube (401) through the L-shaped hole (6).

6. A centrifugal fan hub with a noise reduction mechanism according to claim 5, characterized in that, The drying plate (7) is made of montmorillonite.

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