Flexible connection mechanism of centrifugal fan

Abstract

A flexible connection mechanism of a centrifugal fan belongs to the technical field of centrifugal fans and comprises a first barrel and a second barrel, flange bodies are arranged at the outer ends of the first barrel and the second barrel respectively, and the inner ends of the first barrel and the second barrel are mutually inserted to form a complete connection barrel. A gap is reserved at the inserting part between the first barrel body and the second barrel body; a plurality of supporting frames are arranged on the first barrel body and the second barrel body, and soft cloth is arranged on the periphery of the inserting position in a surrounding mode through the supporting frames; connecting studs are arranged on the two sides of the connecting cylinder body, namely the two sides of the first cylinder body and the two sides of the second cylinder body respectively, and the connecting studs are connected with the flange body, so that the first cylinder body and the second cylinder body are fixed. The flexible connection mechanism of the centrifugal fan is reasonable in design, simple in structure, low in manufacturing cost, convenient to use, capable of effectively prolonging the service life and guaranteeing stable operation of a system, and suitable for popularization.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a soft connection mechanism of a centrifugal fan. Background Art

[0002] The centrifugal fan is mainly composed of impeller, casing, coupling, shaft and other parts. The impeller is the main working part that generates wind pressure and transmits energy; the casing is mainly used to introduce and exhaust gas, and at the same time convert part of the kinetic energy of the gas into pressure energy; the coupling is used to connect the motor and the fan to transmit torque; the shaft is installed and fixed with the impeller, and is connected to the motor through the coupling.

[0003] When the impeller of a centrifugal fan rotates, the gas between the blades gains kinetic energy (dynamic pressure head) due to the centrifugal force and is discharged from the periphery of the impeller. It is guided by the volute-shaped casing to flow toward the fan outlet, thereby forming a negative pressure in the center of the impeller, allowing external air to flow in continuously to replenish it, thereby enabling the fan to discharge the gas.

[0004] At present, the two metal pipes of the centrifugal fan are generally connected by a soft connection. The soft connection acts as a flexible connection between the two metal pipes, and its main function is to compensate for the displacement and stress generated by the equipment or pipes. In the prior art, the soft connection mainly uses metal soft connections, rubber soft connections and soft fabric soft connections, among which the soft fabric connection is the most common. In actual use, the soft fabric connection has the following shortcomings: the soft fabric is easily damaged due to fatigue, and the wear between the soft fabric and the flange inner tube causes the soft fabric to be damaged, which not only greatly reduces the service life of the soft connection, but also affects the operation and use of the entire system in severe cases. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the prior art that soft fabrics are easily damaged and have a short service life, and to provide a centrifugal fan soft connection mechanism, which has a reasonable design, a simple structure, a low manufacturing cost, is easy to use, can effectively extend the service life, ensure the stable operation of the system, and is suitable for promotion.

[0006] The utility model is realized through the following technical scheme: a centrifugal fan soft connection mechanism, comprising a first cylinder and a second cylinder, the outer ends of the first cylinder and the second cylinder are respectively provided with flange bodies, the inner ends of the first cylinder and the second cylinder are plugged into each other to form a complete connection cylinder, and a gap is left at the plug-in joint between the first cylinder and the second cylinder; a plurality of support frames are provided on the first cylinder and the second cylinder, and soft cloth is surrounded by the support frames at the periphery of the above-mentioned plug-in joint; connecting studs are respectively provided on both sides of the connecting cylinder, that is, on both sides of the first cylinder and the second cylinder, and the connecting studs are connected to the flange body, so as to fix the first cylinder and the second cylinder.

[0007] A further improvement of the utility model is that the soft cloth is covered with a layer of stainless steel mesh.

[0008] A further improvement of the utility model is that the soft cloth is connected to the support frame through a pressing plate and bolts.

[0009] A further improvement of the utility model is that the support frame is a plate with an "L"-shaped structure.

[0010] A further improvement of the utility model is that the second cylinder is a conical structure, and the inner end of the first cylinder is inserted into the wide end of the second cylinder, that is, inside the inner end of the second cylinder.

[0011] A further improvement of the utility model is that a fixing plate is arranged on the flange body, and the connecting stud is connected to the flange body through the fixing plate.

[0012] From the above technical scheme, it can be seen that the beneficial effects of the utility model are as follows: the connection mechanism is connected to the metal pipe of the centrifugal fan through the flange body, and the first cylinder and the second cylinder are plugged and fitted together, which greatly reduces the wear of the medium on the soft cloth, thereby extending the service life, and there is a gap at the fitting of the first cylinder and the second cylinder, through which the displacement deviation during the installation process can be compensated, and the practicality is relatively high. At the same time, the soft cloth is coated with a layer of stainless steel mesh. The use of soft cloth with this structure not only reduces the damage during transportation, but also reduces the wear on the soft cloth due to the instability of the gas during use. In summary, the design of the connection mechanism is reasonable, the overall structure is simple, the manufacturing cost is low, and it is easy to use. It can effectively extend the service life and ensure the stable operation of the system, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a structural schematic diagram of a specific embodiment of the utility model.

[0015] 1. First cylinder; 2. Second cylinder; 3. Flange; 4. Support frame; 5. Soft cloth; 6. Stainless steel mesh; 7. Connecting studs; 8. Pressing plate; 9. Fixing plate. DETAILED DESCRIPTION

[0016] In order to make the purpose, features and advantages of the utility model more obvious and easy to understand, the technical scheme of the utility model will be clearly and completely described below in combination with the drawings in the specific embodiment. Obviously, the embodiments described below are only part of the embodiments of the utility model, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this patent.

[0017] Please refer to the attached Figure 1 , combined with a specific embodiment, the following is described: The centrifugal fan soft connection mechanism described in the utility model includes a first cylinder 1 and a second cylinder 2, the outer ends of the first cylinder 1 and the second cylinder 2 are respectively provided with flange bodies 3, the inner ends of the first cylinder 1 and the second cylinder 2 are plugged into each other to form a complete connection cylinder, and a gap is left at the plug-in point between the first cylinder 1 and the second cylinder 2. Specifically, the second cylinder 2 is a conical structure, and the inner end of the first cylinder 1 is inserted into the wide end of the second cylinder 2, that is, inside the inner end of the second cylinder 2.

[0018] A plurality of support frames 4 are provided on the first cylinder 1 and the second cylinder 2. A soft cloth 5 is provided around the outer periphery of the above-mentioned plug-in part through the support frames 4. The soft cloth 5 is covered with a layer of stainless steel mesh 6. Connecting studs 7 are provided on both sides of the connecting cylinder, that is, both sides of the first cylinder 1 and the second cylinder 2, respectively. The connecting studs 7 are connected to the flange body 3, so as to fix the first cylinder 1 and the second cylinder 2.

[0019] The use principle of the utility model: the connection mechanism is connected to the metal pipe of the centrifugal fan through the flange body 3, and the first cylinder 1 and the second cylinder 2 are plugged and sleeved, which can reduce the wear of the medium on the soft cloth 5, thereby extending the service life, and there is a gap at the sleeve of the first cylinder 1 and the second cylinder 2, through which the displacement deviation during the installation process can be compensated, and the practicality is high. At the same time, the soft cloth 5 is coated with a layer of stainless steel mesh 6. The use of the soft cloth 5 with this structure can not only reduce the collision damage during transportation, but also reduce the wear of the soft cloth 5 due to the instability of the gas during use.

[0020] In one embodiment, the support frame 4 is an "L"-shaped plate, and the soft fabric 5 is connected to the support frame 4 through a pressing plate 8 and bolts. The above structure can facilitate the staff to disassemble and assemble the soft fabric 5, and can also avoid the use of self-tapping to cause gas medium leakage.

[0021] In one embodiment, a fixing plate 9 is provided on the flange body 3, and the connecting stud 7 is connected to the flange body 3 via the fixing plate 9. The above structure can facilitate the disassembly and assembly of the first cylinder body 1 and the second cylinder body 2 by the staff.

[0022] The terms "upper", "lower", "outer side", "inner side", etc. in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish the relative relationship in position if they exist, and do not need to be qualitative. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the utility model described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0023] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A centrifugal fan flexible connection mechanism, comprising a first cylinder (1) and a second cylinder (2), characterized in that: The outer ends of the first cylinder (1) and the second cylinder (2) are respectively provided with flange bodies (3), the inner ends of the first cylinder (1) and the second cylinder (2) are plugged into each other to form a complete connected cylinder, and a gap is left at the plug-in point between the first cylinder (1) and the second cylinder (2); a plurality of support frames (4) are provided on the first cylinder (1) and the second cylinder (2), and a soft cloth (5) is provided around the outer periphery of the plug-in point through the support frames (4); connecting studs (7) are respectively provided on both sides of the connected cylinder, that is, on both sides of the first cylinder (1) and the second cylinder (2), and the connecting studs (7) are connected to the flange body (3), thereby fixing the first cylinder (1) and the second cylinder (2).

2. A centrifugal fan soft connection mechanism according to claim 1, characterized in that: The soft cloth (5) is covered with a layer of stainless steel mesh (6).

3. A centrifugal fan soft connection mechanism according to claim 1 or 2, characterized in that: The soft cloth (5) is connected to the support frame (4) via a pressing plate (8) and bolts.

4. A centrifugal fan flexible connection mechanism according to claim 3, characterized in that: The support frame (4) is a plate member with an "L"-shaped structure.

5. A centrifugal fan flexible connection mechanism according to claim 4, characterized in that: The second cylinder (2) is a conical structure, and the inner end of the first cylinder (1) is inserted into the wide end of the second cylinder (2), that is, inside the inner end of the second cylinder (2).

6. A centrifugal fan flexible connection mechanism according to claim 5, characterized in that: A fixing plate (9) is provided on the flange body (3), and the connecting stud (7) is connected to the flange body (3) via the fixing plate (9).

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