Anti-corrosion and wear-resistant cantilever type ventilator

Abstract

The utility model discloses a corrosion-resistant and wear-resistant cantilever type ventilator, which relates to the technical field of ventilators, and comprises an air inlet, a casing group, an impeller, a composite sealing group, a transmission group, a coupler, a motor, a base and a main shaft, the casing group is fixedly arranged on the left side of the upper end of the base, and the air inlet is arranged in the casing group; the motor is fixedly arranged on the right side of the upper end of the base, an output shaft of the motor is connected with the transmission set through a coupler, the output end of the transmission set is connected with the main shaft, the left end of the main shaft is connected with the impeller, and the composite sealing set is installed on the main shaft. The utility model has the advantages that the conical shaft structure main shaft is adopted, the assembly with the stainless steel hub does not need to heat the inner hole of the stainless steel hub to expand and cool and shrink the main shaft, the influence caused by manual misoperation is reduced, the influence of field conditions is avoided, the structure is simple, the cost is low, the assembly operation is simple, and the realization is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of ventilators, and particularly relates to a corrosion-resistant and wear-resistant cantilever ventilator. Background Technique

[0002] A centrifugal ventilator mainly consists of: an impeller, a casing, a coupling, and a shaft. The impeller is the main work component that generates wind pressure and transmits energy; the casing is mainly used to introduce and discharge 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 ventilator to transmit torque; the shaft installs and fixes the impeller and is connected to the motor through the coupling. The centrifugal ventilator is an important part of the manufacturing industry, and its products are widely used in industries such as environmental protection, iron and steel, non-ferrous metals, petrochemical, etc.;

[0003] At present, for some petrochemical ventilators, since most of the conveying media are corrosive gases, most users choose ventilators with an overall stainless steel or better-quality titanium alloy structure, which often have a high cost. At the same time, the processing and manufacturing cost and difficulty are higher than those of carbon steel. The purpose of this invention is to provide a ventilator for working conditions of conveying corrosive media, and to ensure that the carbon steel material ventilator is not corroded and meets the use conditions by lining the parts in contact with the media with rubber. Content of the Utility Model

[0004] The purpose of the utility model is to provide a corrosion-resistant and wear-resistant cantilever ventilator.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a corrosion-resistant and wear-resistant cantilever ventilator, including an air inlet, a casing group, an impeller, a composite seal group, a transmission group, a coupling, a motor, a base, and a main shaft. The casing group is fixedly arranged on the left side of the upper end of the base. The air inlet is installed in the casing group. The impeller is also installed in the casing group and is aligned with the air inlet. The motor is fixedly arranged on the right side of the upper end of the base. The output shaft of the motor is connected to the transmission group through the coupling. The output end of the transmission group is connected to the main shaft. The left end of the main shaft is connected to the impeller. The composite seal group is installed on the main shaft;

[0006] Both the air inlet and the casing group are made of carbon steel material, and the surfaces of the air inlet and the casing group are both lined with rubber.

[0007] As a further solution of the utility model: the blades of the impeller are of a backward single straight plate structure, and auxiliary blades are welded to the rear disc of the impeller.

[0008] As a further solution of the utility model: between the air inlet and the casing group, bolts are inserted into the corresponding blind holes of the two, and then they are fixed to each other by reverse welding.

[0009] As a further solution of the present utility model: It further includes a round nut, a lock washer, a hub, a bushing and a slotted set screw. The bushing is sleeved on the main shaft and fixed to the main shaft by the slotted set screw. The left end of the main shaft is tapered. The hub is also sleeved on the main shaft and located at the left end of the bushing. The left side of the hub is fixedly connected to the main shaft by the round nut. A lock washer is arranged between the round nut and the hub. A sealing groove for inserting the bushing is also provided on the right side of the hub.

[0010] As a further solution of the present utility model: The round nut is in a bullet shape. The round nut, the hub and the bushing are all made of stainless steel material.

[0011] Adopting the above technical solution, compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] 1. Compared with the overall stainless steel fan, the present utility model can meet the operating conditions at a lower cost, can operate stably under the condition of the fan transporting corrosive media, saves resources by eliminating the traditional assembly process, avoids the problems of not being able to use open fire and the small fire use index in the petrochemical industry, and the connection of bolts reduces the influence brought by human operation errors.

[0013] 2. The structure of the present utility model adopts a main shaft with a conical shaft structure. When assembling with the stainless steel hub, it is not necessary to heat the inner hole of the stainless steel hub to expand it and cool and contract the main shaft, which reduces the influence brought by human operation errors, is not affected by on-site conditions, has a simple structure, low cost, simple assembly operation and is easy to implement.

[0014] Other advantages, objectives and features of the present utility model will be described to some extent in the subsequent description, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the present utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present utility model;

[0016] Figure 2 It is a schematic diagram of the matching structure of the main shaft, the hub and the bushing in the embodiment of the present utility model.

[0017] In the figure: 1, air inlet; 2, casing group; 3, impeller; 4, composite seal group; 5, transmission group; 6, coupling; 7, motor; 8, base; 9, main shaft; 10, round nut; 11, lock washer; 12, hub; 13, bushing; 14, slotted set screw. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the specific embodiments of the present utility model in conjunction with the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not constitute a limitation to the present utility model.

[0019] In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0020] Please refer to the attached Figure 1 - attached Figure 2 As shown in the figure, a corrosion-resistant and wear-resistant cantilever ventilator of the present utility model includes an air inlet 1, a casing group 2, an impeller 3, a composite seal group 4, a transmission group 5, a coupling 6, a motor 7, a base 8, and a main shaft 9. The casing group 2 is fixedly arranged on the upper left side of the base 8. The air inlet 1 is installed in the casing group 2. The impeller 3 is also installed in the casing group 2 and is aligned with the air inlet 1. The motor 7 is fixedly arranged on the upper right side of the base 8. The output shaft of the motor 7 is connected to the transmission group 5 through the coupling 6. The output end of the transmission group 5 is connected to the main shaft 9. The left end of the main shaft 9 is connected to the impeller 3. The composite seal group 4 is installed on the main shaft 9.

[0021] Both the air inlet 1 and the casing group 2 are made of carbon steel material, and the surfaces of the air inlet 1 and the casing group 2 are both rubber-lined. When designing the casing group 2 and the air inlet 1, the rubber-lining dimensions are reserved to ensure that the assembly dimensions after rubber-lining are the same as the conventional design. After the casing group 2 and the air inlet 1 are welded, rubber-lining is carried out.

[0022] In an embodiment of the present utility model: the blades of the impeller 3 are of a backward single straight plate structure, and auxiliary blades are welded to the rear disc of the impeller 3 to reduce the flow of the medium to the shaft seal part at the front end.

[0023] In an embodiment of the present utility model: between the air inlet 1 and the casing group 2, bolts are inserted into the corresponding blind holes of the two, and then fixed to each other by reverse welding. After removing the nuts of the bolts for the connection between the casing group 2 and the air inlet 1, reverse welding is carried out on the casing group 2. All the installation holes of the air inlet 1 and the casing group 2 are cut by laser cutting, with high positioning accuracy and easy implementation. The bolts are inserted into the holes of the casing group 2 and fully welded, and the contact surface with the medium is rubber-lined. During on-site installation, only the holes of the air inlet 1 need to be aligned with the bolts and inserted.

[0024] In an embodiment of the present utility model: it further includes a round nut 10, a lock washer 11, a hub 12, a shaft sleeve 13, and a slotted set screw 14. The shaft sleeve 13 is sleeved on the main shaft 9 and fixed to the main shaft 9 by the slotted set screw. The left end of the main shaft 9 is tapered. The hub 12 is also sleeved on the main shaft 9 and is located at the left end of the shaft sleeve 13. The left side of the hub 12 is fixedly connected to the main shaft 9 by the round nut 10. A lock washer 11 is arranged between the round nut 10 and the hub 12. A sealing groove for the shaft sleeve 13 to insert is also provided on the right side of the hub 12.

[0025] In an embodiment of the present utility model: The round nut 10 is arranged in a bullet shape, and the round nut 10, the hub 12, and the shaft sleeve 13 are all made of stainless steel material.

[0026] The above front, back, left, right, up, and down are all based on the Figure 1 in the accompanying drawings of the specification. Taking the perspective of a person observing as the standard, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings. It is 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. Therefore, it should not be construed as a limitation to the protection scope of the present utility model.

[0028] It should be noted that the device structure and drawings of the present utility model mainly describe the principle of the present utility model. In terms of the technical principle of this design, the settings of the power mechanism, power supply system, and control system of the device are not fully described. On the premise that those skilled in the art understand the principle of the above-mentioned utility model, the specific details of its power mechanism, power supply system, and control system can be clearly known. The control method of the application document is to automatically control through a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art.

[0029] The standard parts used therein can all be purchased from the market, and can also be customized according to the records of the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the components known to those skilled in the art, their structures and principles can all be learned by those skilled in the art through technical manuals or through conventional experimental methods.

[0030] The above has described in detail the embodiments of the present utility model in conjunction with the drawings, but the present utility model is not limited to the described embodiments.

[0031] For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A corrosion-resistant and wear-resistant cantilever ventilator, comprising an air inlet (1), a casing group (2), an impeller (3), a composite seal group (4), a transmission group (5), a coupling (6), a motor (7), a base (8) and a main shaft (9), characterized in that: The housing group (2) is fixedly arranged on the upper left side of the base (8). The air inlet (1) is installed in the housing group (2). The impeller (3) is also installed in the housing group (2) and is aligned with the air inlet (1). The motor (7) is fixedly arranged on the upper right side of the base (8). The output shaft of the motor (7) is connected to the transmission group (5) through a coupling (6). The output end of the transmission group (5) is connected to the main shaft (9). The left end of the main shaft (9) is connected to the impeller (3). The composite seal group (4) is installed on the main shaft (9). Both the air inlet (1) and the housing group (2) are made of carbon steel material, and the surfaces of the air inlet (1) and the housing group (2) are both rubber-lined.

2. The cantilever ventilator with anti-corrosion and wear resistance according to claim 1, wherein: The blades of the impeller (3) are of a backward single straight plate structure, and auxiliary blades are welded to the rear disc of the impeller (3).

3. The cantilever ventilator with anti-corrosion and wear resistance according to claim 1, characterized in that: Between the air inlet (1) and the housing group (2), bolts are inserted into the corresponding blind holes of the two, and then they are fixed to each other by reverse welding.

4. The cantilever ventilator with anti-corrosion and wear resistance according to claim 1, characterized in that: It also includes a round nut (10), a lock washer (11), a hub (12), a shaft sleeve (13) and a slotted set screw with cone point (14). The shaft sleeve (13) is sleeved on the main shaft (9) and is fixed to the main shaft (9) by a slotted set screw. The left end of the main shaft (9) is tapered. The hub (12) is also sleeved on the main shaft (9) and is located at the left end of the shaft sleeve (13). The left side of the hub (12) is fixedly connected to the main shaft (9) by a round nut (10). A lock washer (11) is arranged between the round nut (10) and the hub (12). A sealing groove for the shaft sleeve (13) to insert is also provided on the right side of the hub (12).

5. The cantilever ventilator with anti-corrosion and wear resistance according to claim 4, wherein: The round nut (10) is in a bullet shape. The round nut (10), the hub (12) and the shaft sleeve (13) are all made of stainless steel material.

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