A multi-wing explosion-proof centrifugal fan with box plate installation for an integrated air conditioner in a coal mine underground

Abstract

The utility model provides a kind of box board installation multi-wing type explosion-proof centrifugal fan of coal mine underground integrated air conditioner, which comprises a fan mounting plate, a central motor hole and a fan mounting hole; the volute is provided with a volute mounting hole on one side and fixed to the fan mounting plate; the motor mounting plate is provided with a motor mounting hole in the middle and fixed to the front end of the motor, and the outer ring and the edge are respectively provided with a mounting plate fixing hole and an open hole, which are matched with the fan mounting hole to realize three-point synchronous fixing; the motor output shaft is connected to the impeller, and the two are detachable. The fan is easy to install, reliable in explosion-proof and convenient to maintain, and is suitable for coal mine underground air conditioning ventilation.

Description

Technical Field

[0001] This utility model relates to the technical field of ventilation equipment in coal mines, and more specifically, to a multi-bladed explosion-proof centrifugal fan mounted on a box panel for an integrated air conditioner in coal mines. Background Technology

[0002] In the underground working environment of coal mines, ventilation is a crucial factor in ensuring safe production and the health of workers. The fans equipped with integrated air conditioning systems in coal mines must not only meet ventilation requirements but also adapt to the complex and hazardous underground environment, placing extremely high demands on their explosion-proof performance, ease of installation, and ease of maintenance. However, existing underground coal mine air conditioning fans have many shortcomings.

[0003] Traditional underground air conditioning fans in coal mines suffer from inadequate structural design and a cumbersome installation process. They typically require multiple independent installation components and steps, consuming significant time and manpower. Furthermore, the confined space underground makes operation difficult, increasing the risk of inaccurate installation and impacting the fan's operational stability and performance.

[0004] Furthermore, the maintenance of traditional fans is also difficult. Due to the inflexible connection between components, when maintenance is required on critical components such as motors, it is often necessary to disassemble a large number of surrounding parts, which increases maintenance costs and time, leads to prolonged equipment downtime, affects the normal operation of underground air conditioning systems in coal mines, and consequently affects the comfort of the underground working environment and production efficiency. Utility Model Content

[0005] Based on the above-mentioned technical problems, this utility model proposes a multi-bladed explosion-proof centrifugal fan with a box-mounted integrated air conditioner for underground coal mines.

[0006] A multi-blade explosion-proof centrifugal fan mounted on a panel of an integrated air conditioner for underground coal mines includes: The fan mounting plate, as part of the air conditioning unit, has a central motor hole and multiple fan mounting holes evenly distributed around the circumference of the motor hole; The volute has through openings on both sides, and the outer ring of one of the openings has volute mounting holes corresponding to the fan mounting holes. It is fixed to one side of the fan mounting plate by volute fixing bolts. The motor mounting plate has a through hole in the middle and motor mounting holes evenly distributed around the through hole. The motor mounting plate is fixed to the front end of the motor by the cooperation of motor bolts and motor mounting holes. The motor's output shaft passes through a perforation and connects to the impeller, which is located inside the volute casing. The fan mounting holes are divided into motor mounting holes and volute mounting holes, which are distributed alternately. The outer ring of the motor mounting plate is provided with mounting plate fixing holes corresponding to the motor fixing holes. The motor fixing bolts pass through the mounting plate fixing holes, the motor fixing holes and the volute mounting holes in sequence to achieve three-point synchronous fixing of the motor mounting plate, the fan mounting plate and the volute. The motor mounting plate has an opening at its edge that corresponds to the volute fixing hole, and the volute fixing bolt passes through the volute fixing hole without contacting the opening.

[0007] Furthermore, the diameter of the opening is larger than the diameter of the volute fixing bolt, forming a radial clearance fit.

[0008] Furthermore, the impeller and the motor output shaft are detachably connected and can be disassembled and assembled through the opening on the outside of the volute.

[0009] Beneficial effects: 1. Simple and efficient installation: The unique fan mounting hole design and three-point synchronous fixing method make the installation of each component of the fan simpler and faster, reducing installation time and labor costs. It is especially suitable for installation operations in narrow underground spaces, improving the accuracy and stability of installation. 2. Convenient maintenance: The detachable connection between the impeller and the motor output shaft, as well as the special design of the motor mounting plate, make it easy to disassemble the motor and impeller during maintenance without disassembling too many peripheral parts, greatly reducing maintenance costs and downtime, and improving the maintainability and overall operating efficiency of the fan. Attached Figure Description

[0010] Figure 1 A schematic diagram of the structure of this utility model is shown. Figure 1 ; Figure 2 A schematic diagram of the structure of this utility model is shown. Figure 2 ; Figure 3 A schematic diagram of the fan structure is shown; Figure 4 A schematic diagram of the fan mounting plate is shown. Figure 5 A schematic diagram of the motor mounting plate is shown. Figure 6 A schematic diagram showing the fit between the motor mounting plate and the fan mounting plate is provided. In the attached diagram, 1 is the fan mounting plate, 11 is the motor hole, 12 is the fan mounting hole, 121 is the motor fixing hole, 122 is the volute fixing hole, 2 is the motor, 3 is the motor mounting plate, 31 is the through hole, 32 is the motor mounting hole, 33 is the output shaft, 34 is the mounting plate fixing hole, 35 is the opening hole, 4 is the fan, 41 is the volute, 42 is the impeller, 411 is the opening, 412 is the air inlet, 413 is the volute mounting hole, 414 is the air outlet, 5 is the motor bolt, 6 is the volute fixing bolt, and 7 is the motor fixing bolt. Detailed Implementation

[0011] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0012] like Figures 1-6 The illustrated integrated air conditioner for underground coal mines features a multi-bladed explosion-proof centrifugal fan mounted on a panel, comprising a fan mounting plate 1, a volute 41, a motor mounting plate 3, and a motor 2.

[0013] As part of the air conditioning unit, the fan mounting plate 1 plays a key role in supporting and fixing other components. The plate is provided with a central motor hole 11 and multiple fan mounting holes 12 evenly distributed around the circumference of the motor hole 11. These fan mounting holes 12 are divided into motor fixing holes 121 and volute fixing holes 122, which are alternately distributed to provide precise positioning and connection points for the installation of subsequent components.

[0014] The volute 41 is an important component of the fan 4. It has through openings 411 on both sides. One side of the opening 411 has a volute mounting hole 413 on the outer ring corresponding to the fan mounting hole 12. It is fixed to one side of the fan mounting plate 1 by the volute fixing bolts 6. The opening 411 on the other side is the air inlet 412 of the fan 4. The function of the volute 41 is to guide the airflow from the air inlet 412 to the air outlet 414, so that the air forms a centrifugal motion in the volute 41, thereby improving the ventilation efficiency of the fan 4. Its fixed connection with the fan mounting plate 1 ensures the stability of the overall structure of the fan 4.

[0015] The motor mounting plate 3 has a through hole 31 in the middle, and motor mounting holes 32 are evenly distributed around the through hole 31. The motor mounting plate 3 is fixed to the front end of the motor 2 by the cooperation of the motor bolts 5 with the motor mounting holes 32, which serves to fix the motor 2 and assist in the installation. The outer ring of the motor mounting plate 3 has mounting plate fixing holes 34 corresponding to the motor fixing holes 121. The motor fixing bolts 7 pass through the mounting plate fixing holes 34, the motor fixing holes 121 and the volute mounting holes 413 in sequence to achieve three-point synchronous fixing of the motor mounting plate 3, the fan mounting plate 1 and the volute 41. This fixing method enhances the stability and integrity of the entire fan 4 structure. The edge of the motor mounting plate 3 has an opening hole 35 corresponding to the volute fixing hole 122. The volute fixing bolts 6 pass through the volute fixing hole 122 without contacting the opening hole 35, and the diameter of the opening hole 35 is larger than the diameter of the volute fixing bolts 6, forming a radial clearance fit. This design does not affect the fixing of the volute 41 and provides convenience for the installation and removal of the motor mounting plate 3.

[0016] The motor 2 serves as the power source for the fan 4. Its output shaft 33 passes through the perforation 31 and is connected to the impeller 42. The impeller 42 is located inside the volute 41. The motor 2 drives the impeller 42 to rotate, thereby generating airflow and achieving the ventilation function. The impeller 42 and the output shaft 33 of the motor 2 are detachably connected and can be disassembled and assembled from the air inlet 412 on the outside of the volute 41. This design facilitates the individual maintenance and replacement of the impeller 42 and the motor 2, and improves maintenance efficiency.

[0017] The assembly process of fan 4 is as follows: Installation of volute 41: Align the volute mounting hole 413 on the outer ring of the opening 411 on one side of volute 41 with the volute fixing hole 122 on the fan mounting plate 1. Use the volute fixing bolt 6 to pass through the volute mounting hole 413 and the volute fixing hole 122 to fix the volute 41 to one side of the fan mounting plate 1, ensuring that the volute 41 is installed firmly and in the correct position.

[0018] Assembly of motor 2 and motor mounting plate 3: The motor mounting plate 3 is fixedly connected to the motor mounting hole 32 at the front end of motor 2 by motor bolts 5, thus completing the assembly of motor 2 and motor mounting plate 3.

[0019] Overall Fixing: Move the motor mounting plate 3 with the assembled motor 2 to the corresponding position on the fan mounting plate 1, so that the output shaft 33 of the motor 2 passes through the through hole 31 in the middle of the motor mounting plate 3 and the central motor hole 11 of the fan mounting plate 1. At the same time, align the mounting plate fixing holes 34 on the outer ring of the motor mounting plate 3 with the motor fixing holes 121 on the fan mounting plate 1. Then, use the motor fixing bolts 7 to pass through the mounting plate fixing holes 34, the motor fixing holes 121 and the volute mounting holes 413 in sequence, and tighten the bolts to achieve three-point synchronous fixing of the motor mounting plate 3, the fan mounting plate 1 and the volute 41. During this process, pay attention to the fact that the volute fixing bolts 6 do not contact the opening holes 35 on the edge of the motor mounting plate 3 when passing through the volute fixing holes 122.

[0020] Impeller 42 installation: Connect the impeller 42 to the output shaft 33 of the motor 2 through the opening 411 on the outside of the volute 41, ensuring a firm connection so that the impeller 42 can rotate normally under the drive of the motor 2.

[0021] The disassembly process is as follows: Impeller 42 disassembly: First, disconnect the power supply to the motor 2 to ensure that the fan 4 is in a stopped state. From the opening 411 on the outside of the volute 41, separate the impeller 42 from the detachable connection part of the output shaft 33 of the motor 2, and carefully remove the impeller 42 from the volute 41.

[0022] Motor 2 disassembly: Use tools to unscrew the motor fixing bolts 7. These bolts pass through the mounting plate fixing holes 34 of the motor mounting plate 3, the motor fixing holes 121 of the fan mounting plate 1, and the volute mounting holes 413 of the volute 41 in sequence. After unscrewing the motor fixing bolts 7, separate the motor 2 from the motor mounting plate 3. At this time, the motor 2 can be removed from the overall structure of the fan 4 for separate maintenance or repair.

[0023] Disassembly of volute 41: Unscrew the volute fixing bolts 6. These bolts pass through the volute mounting hole 413 and the volute fixing hole 122 of the fan mounting plate 1. After unscrewing the bolts, the volute 41 can be removed from the fan mounting plate 1, thus completing the disassembly of the volute 41 and facilitating cleaning, inspection or maintenance of the volute 41.

[0024] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A multi-bladed explosion-proof centrifugal fan mounted on a panel of an integrated air conditioner for underground coal mines, characterized in that, include: The fan mounting plate (1), as part of the air conditioning unit, is provided with a central motor hole (11) and multiple fan mounting holes (12) evenly distributed around the motor hole (11). The volute (41) has through holes (411) on both sides. The outer ring of one of the holes (411) has a volute mounting hole (413) corresponding to the fan mounting hole (12). It is fixed to one side of the fan mounting plate (1) by volute fixing bolts (6). The motor mounting plate (3) has a through hole (31) in the middle and motor mounting holes (32) evenly distributed around the through hole (31). The motor mounting plate (3) is fixed to the front end of the motor (2) by the cooperation of the motor bolts (5) and the motor mounting holes (32). The motor (2) has its output shaft passing through a through hole (31) and connected to the impeller (42), which is located inside the volute (41). The fan mounting hole (12) is divided into a motor fixing hole (121) and a volute fixing hole (122), which are distributed alternately. The outer ring of the motor mounting plate (3) is provided with mounting plate fixing holes (34) corresponding to the motor fixing holes (121). The motor fixing bolts (7) pass through the mounting plate fixing holes (34), the motor fixing holes (121) and the volute mounting holes (413) in sequence to achieve three-point synchronous fixing of the motor mounting plate (3), the fan mounting plate (1) and the volute (41); The motor mounting plate (3) has an opening (35) at its edge that corresponds to the volute fixing hole (122). The volute fixing bolt (6) passes through the volute fixing hole (122) without contacting the opening (35).

2. The multi-blade explosion-proof centrifugal fan mounted on the casing of the integrated underground air conditioner in coal mines according to claim 1, characterized in that, The diameter of the opening hole (35) is larger than the diameter of the volute fixing bolt (6), forming a radial clearance fit.

3. The multi-bladed explosion-proof centrifugal fan mounted on the casing of the integrated underground air conditioner in coal mines according to claim 1, characterized in that, The impeller (42) and the output shaft of the motor (2) are detachably connected and can be disassembled and assembled from the opening (411) on the outside of the volute (41).

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