Volute disassembly-free automatic auxiliary cleaning fan

Abstract

The utility model relates to the field of machinery. A volute disassembly-free automatic auxiliary cleaning fan comprises a back cover plate and a volute, a motor is fixedly arranged on the back cover plate, and the back cover plate is rotatably connected with a front shell; the back cover plate and the front shell are closed to form a closed space; a rotating shaft of the motor penetrates through the back cover plate and is provided with an impeller, and the impeller is arranged in the closed space; an opening and closing mechanism is installed between the back cover plate and the front shell and drives the back cover plate to rotate along the connecting position. The back cover plate rotates along the joint, and the impeller moves out of the closed space. The back cover plate is rotatably connected with the front shell, and the opening and closing mechanism is used for driving the back cover plate to be opened and closed, so that a labor-consuming and low-efficiency treatment mode that screws need to be disassembled when dust is cleaned by an original impeller is eliminated, on one hand, manpower is saved, on the other hand, opening and closing control becomes simple and convenient, and the working efficiency is improved. And the working efficiency of dust cleaning is improved, and the shutdown time of the fan is shortened, so that the production cost is reduced, beneficial technical effects are obtained, and certain progress is achieved.

Description

Technical Field

[0001] The utility model relates to the field of mechanical equipment, in particular to an industrial fan. Background Art

[0002] The fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. As the fan runs longer, the dust inside the fan will adhere to the impeller unevenly, gradually destroying the dynamic balance of the fan and increasing the vibration of the bearing. Once the vibration reaches the maximum value allowed by the fan, the fan must be shut down for repair, dust accumulation must be removed, and dynamic balance must be redone.

[0003] To clean the dust from a traditional fan, you need to remove the bolts that secure the cover on the back of the motor before you can open the casing and clean the impeller. This cleaning process is time-consuming and labor-intensive, and affects the working efficiency of the fan. Utility Model Content

[0004] The utility model aims to provide a fan for automatically assisting in cleaning the volute without requiring disassembly, so as to solve the above-mentioned technical problems.

[0005] The technical problem solved by the present invention can be achieved by adopting the following technical solutions:

[0006] The invention discloses a volute-free disassembly-free automatic auxiliary cleaning fan, comprising a motor, a volute and an impeller, wherein the volute comprises a back cover and a front shell, the back cover and the front shell are combined to form an inner cavity of the volute, and the impeller is arranged in the inner cavity of the volute; the back cover and the front shell are rotatably connected; the diameter of the connection between the back cover and the front shell is larger than the outer diameter of the impeller, the motor is arranged on the back cover, and the rotating shaft of the motor passes through the back cover and is fixedly connected to the impeller; a sealing structure is arranged at the connection between the back cover and the front shell, and the sealing structure has at least one elastic hollow rubber O-ring, which is fixed to one of the back cover and the front shell.

[0007] The back cover and the front housing are rotatably connected. When the impeller needs to be cleaned, the back cover can be rotated away from the front housing to transfer the impeller working in the inner cavity out. At this time, the impeller can be cleaned and dust can be removed.

[0008] The elastic hollow rubber O-ring has a large deformation sealing ability. On the one hand, the deformation ability of the rubber O-ring can be used to play a sealing role. On the other hand, it can reduce the requirements for the flatness of the shell sealing surface during the manufacturing process and reduce the requirements for assembly accuracy.

[0009] In addition, the elastic hollow rubber O-ring can also buffer the impact force when the back cover and the front shell are closed, avoiding noise generated when metals collide, which is beneficial to reducing noise pollution in the production environment.

[0010] Furthermore, an opening and closing mechanism driven by a power device is installed between the back cover and the front shell.

[0011] The opening and closing mechanism drives the back cover plate to open and close along the connection, driving the impeller to enter and exit the inner cavity, making opening and closing more labor-saving.

[0012] Further preferably, the opening and closing mechanism includes: a vortex casing shaft, a power device, a straight handle rod and a cover plate shaft, the vortex casing shaft is arranged above the front shell body, the cover plate shaft is arranged above the back cover plate, the vortex casing shaft is rotatably connected to one end of the power device, the other end of the power device is rotatably connected to the straight handle rod, and the straight handle rod is rotatably connected to the cover plate shaft.

[0013] Further preferably, when the power device is at the minimum stroke position, the back cover and the front housing are in a closed state; when the power device is at the maximum stroke position, the back cover and the front housing are in an open state.

[0014] The telescopic part of the power device drives the back cover plate through the straight handle rod, with the vortex casing shaft as the fulcrum, and the opening and closing mechanism acts on the cover plate shaft. When the telescopic part stroke increases, it pushes the back cover plate to rotate away from the front housing; when the telescopic part stroke decreases, it drives the back cover plate to close to the front housing.

[0015] Further preferably, the power device is a bidirectional power cylinder.

[0016] The cylinder has the characteristics of fast response, easy control, and smooth movement, which can improve production efficiency.

[0017] Furthermore, the impeller is fixedly mounted on the rotating shaft of the motor through a shaft head sealing plate.

[0018] By installing the impeller through the shaft head sealing plate, the impeller can be fixed on the rotating shaft of the motor more stably and firmly to prevent the impeller from slipping when working.

[0019] Furthermore, the back cover and the front shell are rotatably connected and are hinge crank connected.

[0020] The hinge crank connection can provide a larger opening and closing angle for the back cover, making it easier to clean the dust on the impeller and also convenient for the impeller to be dynamically re-balanced.

[0021] Further preferably, the sealing structure further comprises a metal-clad gasket of flexible graphite wrapped with a circle of stainless steel sheet, and a layer of flexible graphite corrugated tape is attached to the outside of the metal-clad gasket.

[0022] The fan has a harsh working environment, and further sealing measures need to be taken to protect the impeller from the impact of the environment, which helps to increase the working time of the fan and also helps to prevent the leakage of harmful gases in the pipeline. For corrosive gases, corrosion-resistant materials are also required, such as stainless steel 1Cr18Ni9Ti. By wrapping the soft graphite with metal materials, the sealing gasket after wrapping can withstand high temperature and high pressure during use, and there will be no cross-flow of contents, and the soft core material will not be squeezed out from the joint. The sealing performance can be further improved by applying the graphite corrugated tape to the wrapped gasket.

[0023] The utility model uses a hinge to connect the back cover and the front shell body, and then uses a power device to drive the opening and closing of the back cover, thereby eliminating the need to remove screws and remove the impeller when cleaning dust with an impeller. The laborious and inefficient processing method saves manpower on the one hand, and on the other hand, the opening and closing control becomes simple, thereby improving the work efficiency of cleaning dust, shortening the downtime of the fan, thereby reducing production costs, achieving beneficial technical effects, and having certain progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0025] Figure 1 It is a front view of the utility model;

[0026] Figure 2 It is a cross-sectional view of the front view of the utility model;

[0027] Figure 3 It is a top view of the utility model.

[0028] Explanation of symbols:

[0029] 1. Front housing; 2. Back cover; 3. Impeller; 4. Motor; 5. Shaft head cover; 6. Hinge; 7. Straight handle; 8. Cylinder; 9. Rubber O-ring; 10. Volute shaft; 11. Cover shaft; 12. Inner cavity. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with the accompanying drawings.

[0031] Reference Figure 1 , Figure 2As shown, the volute-free disassembly-free automatic auxiliary cleaning fan includes a motor 4, a volute and an impeller 3. The volute includes a back cover 2 and a front shell 1. The back cover 2 and the front shell 1 are combined to form an inner cavity of the volute, and the impeller 3 is arranged in the inner cavity 12 of the volute; the back cover 2 and the front shell 1 are rotatably connected; the diameter of the connection between the back cover 2 and the front shell 1 is larger than the outer diameter of the impeller 3, the motor 4 is arranged on the back cover 2, and the rotating shaft of the motor 4 passes through the back cover 2 and is fixedly connected to the impeller 3; a sealing structure is provided at the connection between the back cover 2 and the front shell 1, and the sealing structure has at least one elastic hollow rubber O-ring 9, which is fixed to one of the back cover 2 and the front shell 1.

[0032] In this embodiment, the back cover 2 and the front shell 1 are rotatably connected. When the impeller 3 needs to be cleaned, the back cover 2 can be rotated to leave the front shell 1, and the impeller 3 located in the inner cavity 12 can be moved out. At this time, the impeller 3 can be cleaned, dust can be removed, and the dynamic balance of the impeller 3 can be adjusted.

[0033] The elastic hollow rubber O-ring 9 has a large deformation sealing ability. On the one hand, the deformation ability of the rubber O-ring 9 can be used to play a sealing role. On the other hand, the requirements for the flatness of the housing sealing surface during the manufacturing process can be reduced, and the requirements for assembly accuracy can be reduced.

[0034] In addition, the elastic hollow rubber O-ring 9 can also buffer the impact force when the back cover and the front housing are closed, avoiding noise generated when metals collide with each other, which is beneficial to reducing noise pollution in the production environment.

[0035] Furthermore, an opening and closing mechanism driven by a power device is installed between the back cover 2 and the front housing 1 .

[0036] In this embodiment, the opening and closing mechanism drives the back cover plate 2 to open and close along the connection, driving the impeller 3 to enter and exit the inner cavity 12, making the opening and closing more labor-saving and more efficient.

[0037] Further preferably, the opening and closing mechanism includes: a vortex casing shaft 10, a power device, a straight handle rod 7 and a cover plate shaft 11, the vortex casing shaft 10 is arranged above the front shell 1, the cover plate shaft 11 is arranged above the back cover plate 2, the vortex casing shaft 10 can be rotatably connected to one end of the power device, and the other end of the power device can be rotatably connected to the straight handle rod 7, and the straight handle rod 7 can be rotatably connected to the cover plate shaft 11.

[0038] Further preferably, when the power device is at the minimum stroke position, the back cover 2 and the front housing 1 are in a closed state; when the power device is at the maximum stroke position, the back cover 2 and the front housing 1 are in an open state.

[0039] In this embodiment, one end of the power device is connected to the volute shaft 10, forming a fixed fulcrum with a constant position; the other end of the power device is connected to the volute shaft 10 through a straight handle rod 7, forming a dynamic fulcrum with a variable position. The position of the volute shaft 10 changes with the stroke of the power device piston, thereby driving the opening and closing position of the back cover 2.

[0040] When the telescopic member stroke increases, the back cover plate 2 moves away from the front housing 1, driving the impeller 3 to move out of the inner cavity 12; when the telescopic member stroke decreases, the back cover plate 2 moves closer to the front housing 1, driving the impeller 3 to enter the inner cavity 12.

[0041] Further preferably, the power device is a bidirectional power cylinder 8.

[0042] In this embodiment, the power device can be selected from one of the pneumatic cylinder, electric cylinder and hydraulic cylinder, and the power cylinder is preferably selected. Compared with other power devices, the power cylinder has the characteristics of fast response speed, easy control, smooth movement, etc. It is particularly suitable for light load and short stroke applications, and has lower maintenance and use costs, which can reduce production costs and improve production efficiency.

[0043] Furthermore, the impeller 3 is fixedly mounted on the rotating shaft of the motor 4 via a shaft head sealing plate 5 .

[0044] In this embodiment, there are many conventional installation methods for installing the impeller 3 to the rotating shaft of the motor 4. By installing the impeller 3 through the shaft head cover plate 5, the impeller 3 can be more stably and firmly fixed on the rotating shaft of the motor 4, preventing the impeller 3 from slipping, causing safety hazards and resulting in production accidents.

[0045] Furthermore, the back cover plate 2 and the front housing 1 are rotatably connected, and are hinge crank connections.

[0046] This embodiment uses a combination of hinge 6 and crank to connect the back cover 2 and the front shell 1. The hinge can provide a larger supporting force for supporting the weight of the motor, and the crank can provide a larger opening and closing angle for the back cover 2, which is convenient for dust cleaning efficiency and for the impeller 3 to be dynamically re-balanced.

[0047] More preferably, it also includes a metal-clad gasket of flexible graphite wrapped with a circle of stainless steel sheet, and a layer of flexible graphite corrugated tape is attached to the outside of the metal-clad gasket.

[0048] The working environment of the fan is harsh, and further sealing measures need to be taken to protect the impeller 3 from the influence of the environment, which helps to increase the working time of the fan and also helps to prevent the leakage of harmful gases in the pipeline. For corrosive gases, it is also necessary to use corrosion-resistant materials, such as stainless steel 1Cr18Ni9Ti. By wrapping the soft graphite with metal materials, the sealing gasket after wrapping can withstand high temperature and high pressure during use, and there will be no cross-flow of contents, and the soft core material will not be squeezed out from the joint. The sealing performance can be further improved by applying the graphite corrugated tape to the wrapped gasket.

[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A volute-free automatic auxiliary cleaning fan includes a motor, a volute and an impeller, and is characterized by: The volute comprises a back cover plate and a front housing, the back cover plate and the front housing are combined to form an inner cavity of the volute, and the impeller is arranged in the inner cavity of the volute; The back cover and the front housing are rotatably connected; The diameter of the connection between the back cover and the front housing is larger than the outer diameter of the impeller. The motor is arranged on the back cover plate, and the rotating shaft of the motor passes through the back cover plate and is fixedly connected to the impeller; A sealing structure is provided at the connection between the back cover plate and the front housing. The sealing structure contains at least one elastic hollow rubber O-ring, which is fixed on one of the back cover plate and the front housing.

2. The vortex casing-free automatic auxiliary cleaning fan according to claim 1 is characterized in that: An opening and closing mechanism driven by a power device is installed between the back cover plate and the front shell.

3. The vortex casing-free automatic auxiliary cleaning fan according to claim 2 is characterized in that: The opening and closing mechanism includes: a vortex casing shaft, a power device, a straight handle rod and a cover plate shaft. The vortex casing shaft is arranged above the front shell, and the cover plate shaft is arranged above the back cover plate. The vortex casing shaft can be rotatably connected to one end of the power device, and the other end of the power device can be rotatably connected to the straight handle rod, and the straight handle rod can be rotatably connected to the cover plate shaft.

4. The vortex casing disassembly-free automatic auxiliary cleaning fan according to claim 2 is characterized in that: The power device is located at the minimum stroke position, and the back cover and the front housing are in a closed state; the power device is located at the maximum stroke position, and the back cover and the front housing are in an open state.

5. The vortex casing disassembly-free automatic auxiliary cleaning fan according to claim 2, characterized in that: The power device is a bidirectional power cylinder.

6. The vortex casing-free automatic auxiliary cleaning fan according to claim 1 is characterized in that: The impeller is fixedly mounted on the rotating shaft of the motor through a shaft head sealing plate.

7. The vortex casing-free automatic auxiliary cleaning fan according to claim 1 is characterized in that: The back cover plate and the front housing are rotatably connected and are connected by a hinge crank.

8. The vortex casing-free automatic auxiliary cleaning fan according to claim 1, characterized in that: The sealing structure also includes a metal-clad gasket formed by wrapping a circle of stainless steel sheet with flexible graphite, and a layer of flexible graphite corrugated tape is attached to the outside of the metal-clad gasket.

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