Axial flow fan structure

Abstract

The utility model discloses a kind of axial flow fan structure, it is related to fan technical field, and its technical scheme main points are as follows: including body and motor, bottom foot is arranged outside body, several slide rails are equipped in body, support frame is slidably connected on slide rail, the end cover of body is detachably connected, support frame includes T-shaped frame and annular frame, motor is installed on annular frame by fixed bolt, one end of slide rail is fixed with stop block, end cover is fixed with contact lever, the end of contact lever is fixed with rubber block. By removing installation screw to release the limiting of end cover on body, make rubber block no longer tightly contact T-shaped frame on stop block, make the end surface of support frame towards body slide, make impeller and motor expose outside body, so that the outer wall of ventilation duct cannot influence the maintenance of impeller and motor, facilitate the maintenance of axial flow fan.

Description

Technical Field

[0001] This utility model relates to the field of fan technology, and more specifically, to an axial flow fan structure. Background Technology

[0002] Axial flow fans are ventilation devices that use rotating impellers to propel gas along the axial direction. They are characterized by large flow rate and low pressure and are widely used in industries, construction, and agriculture.

[0003] Chinese patent CN223075787U discloses a vertical axial flow fan. Its key technical features are: it includes a body, which includes a housing and fixing rings welded to both ends of the housing. The housing includes a fixed arc plate and a sliding arc plate. The top of the fixed arc plate has a maintenance cavity. The sliding arc plate is slidably connected to the outer wall of the fixed arc plate in the circumferential direction. The fixed arc plate and the sliding arc plate are fixed together by bolts.

[0004] The above solution allows maintenance tools to be inserted from both ends of the fan or from above the maintenance chamber during maintenance, facilitating the repair of the fan impeller and motor. However, for some axial flow fans installed at the inlet or opening of ventilation ducts, the outer wall of the ventilation duct restricts the access of maintenance tools from above the maintenance chamber even when the sliding arc plate is opened, thus limiting the axial flow fan in this solution.

[0005] Therefore, a new solution is needed to address this problem. Utility Model Content

[0006] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide an axial flow fan structure.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an axial flow fan structure, including a body and a motor disposed within the body, a base is provided on the outer side of the body, and a plurality of slide rails are provided within the body along the circumference of the body. All slide rails are slidably connected to the same support frame for mounting the motor, and an end cap is detachably connected to the end of the body; the support frame includes a T-shaped frame and an annular frame, one end of the T-shaped frame is slidably connected to the slide rail, and the motor is mounted on the annular frame by fixing bolts; a stop block is fixed to one end of the slide rail, and an abutment rod sleeved on the slide rail is fixed to the end cap, and a rubber block for pressing the T-shaped frame against the stop block is fixed to the end of the abutment rod.

[0008] The present invention is further configured such that: limiting grooves are provided on both sides of the slide rail, and the abutment rod and the T-shaped frame are provided with inserts that slide in the limiting grooves.

[0009] The present invention is further configured such that a handle is provided at the output end of the motor.

[0010] The present invention is further configured such that: a first wire slot is provided on the slide rail away from the base, and a second wire slot communicating with the first wire slot is provided on one of the T-shaped frames.

[0011] The present invention is further configured such that a wire fixing bracket is provided on the T-shaped frame having the second wire slot.

[0012] In summary, this utility model has the following beneficial effects: By removing the mounting screws, the end cover is released from its limiting position on the machine body, so that the rubber block no longer presses the T-shaped frame against the stop block. The support frame slides toward the end face of the machine body, exposing the impeller and motor outside the machine body. This ensures that the outer wall of the ventilation duct will not affect the maintenance of the impeller and motor, making it easier to maintain the axial flow fan. During the use of the axial flow fan, the rubber block presses the T-shaped frame against the stop block, making it difficult for the support frame to shift axially in the machine body. At the same time, the vibration generated by the motor operation can be well absorbed by the rubber block, which is less likely to cause resonance in the machine body and can ensure the operational stability of the axial flow fan. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention; Figure 2 for Figure 1 Enlarged diagram of section A in the middle; Figure 3 for Figure 1 Enlarged schematic diagram of section B.

[0014] In the diagram: 1. Body; 2. Motor; 3. Foot; 4. Slide rail; 5. End cover; 6. T-shaped frame; 7. Ring frame; 8. Fixing bolt; 9. Stop block; 10. Abutment rod; 11. Rubber block; 12. Limiting groove; 13. Insert strip; 14. Handle; 15. First wire receiving groove; 16. Second wire receiving groove; 17. Wire fixing frame. Detailed Implementation

[0015] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0016] An axial flow fan structure, such as Figure 1 and Figure 3As shown, the fan includes a body 1, a motor 2 housed within the body 1, and an impeller fixed to the output end of the motor 2. A base 3 is provided on the outer side of the body 1. Four slide rails 4, each circumferentially arranged, are welded inside the body 1. The slide rails 4 are fixed to the body 1 at positions 3, 6, 9, and 12 o'clock. The length of the slide rails 4 is less than the length of the body 1. The end face of the slide rail 4 is flush with one end face of the body 1. Whether it is flush with the end face of the body 1 closest to the motor 2 or the end face of the body 1 closest to the impeller depends on the actual installation conditions. For example, if the axial flow fan is installed near the inlet of a ventilation duct, since the airflow direction of most axial flow fans is from the impeller towards the motor 2... If the motor 2 is closer to the interior of the ventilation duct than the impeller, then the end face of the slide rail 4 should be aligned with the end face of the body 1 closest to the impeller, and vice versa. In this embodiment, only the above situation will be described in detail. All slide rails 4 are slidably connected to the same support frame for mounting the motor 2. The end of the body 1 is provided with an end cover 5. The end face of the body 1 has several threaded holes, and the end cover 5 has several round holes. The round holes are filled with mounting screws threaded into the threaded holes. The support frame includes a T-shaped frame 6 and an annular frame 7. One end of the T-shaped frame 6 is slidably connected to the slide rail 4. The motor 2 is mounted on the annular frame 7 by fixing bolts 8. The width of the annular frame 7 is less than the length of the motor 2. The slide rail 4 is located in the machine A stop block 9 is fixed at one end inside the body 1. An abutment rod 10, sleeved on the slide rail 4, is fixed on the end cover 5. A rubber block 11, used to press the T-shaped frame 6 against the stop block 9, is fixed at the end of the abutment rod 10. The sum of the lengths of the rubber block 11 and the abutment rod 10 is greater than the length of the slide rail 4. When the axial flow fan needs to be repaired, the maintenance personnel remove the mounting screws to release the end cover 5 from the body 1, allowing the end cover 5 to be removed from the body 1. During the removal of the end cover 5, the abutment rod 10 slides along the slide rail 4 away from the stop block 9, so that the rubber block 11 no longer presses the T-shaped frame 6 against the stop block 9, giving the support frame the freedom to slide along the slide rail 4 in the axial direction of the body 1. After rod 10 is completely detached from slide rail 4, maintenance personnel can slide the support frame toward the end face of body 1, exposing the impeller and motor 2 outside body 1. This ensures that the outer wall of the ventilation duct will not affect the maintenance of the impeller and motor 2, facilitating the maintenance of the axial flow fan. During the use of the axial flow fan, the mounting screws fix the end cover 5 to the end face of body 1, causing the rubber block 11 to press the T-shaped frame 6 against the stop block 9, making it difficult for the support frame to shift axially in body 1. At the same time, the vibration generated by the motor 2 can be well absorbed by the rubber block 11, making it less likely to cause resonance in body 1. This not only effectively reduces the noise generated during the operation of the axial flow fan but also ensures the operational stability of the axial flow fan.

[0017] like Figures 1 to 3As shown, limit grooves 12 are provided on both sides of the slide rail 4. Both the abutment rod 10 and the T-shaped frame 6 are equipped with inserts 13 that slide within the limit grooves 12. When the abutment rod 10 is fitted onto the slide rail 4, the inserts 13 on the abutment rod 10 simultaneously embed into the limit grooves 12, ensuring that the abutment rod 10 can only slide along the length of the slide rail 4. When the mounting screws completely fix the end cover 5, the abutment rod 10 is also completely confined to the slide rail 4, preventing the vibration generated by the axial flow fan from causing the abutment rod 10 to axially jump, thus avoiding the possibility of the abutment rod 10 colliding with the slide rail 4. This provides better protection. Protective contact rod 10 or slide rail 4; a handle 14 is provided at the output end of motor 2; the impeller is fixed between the handle 14 and motor 2. After end cover 5 is removed, maintenance personnel can pull the impeller and motor 2 out of the body 1 by holding the handle 14. The handle 14 provides maintenance personnel with a good point of force to drag the impeller and motor 2, facilitating subsequent maintenance of the impeller and motor 2. A first wire slot 15 is provided on the slide rail 4 away from the base 3, and a second wire slot 16 communicating with the first wire slot 15 is provided on a T-shaped frame 6. When installing this axial flow fan, The power cord is threaded through a movable cable tray, which in turn passes through the first cable tray 15 and the second cable tray 16, electrically connecting the power cord to the motor 2. The movable cable tray provides support for the power cord and ensures it remains within the tray, preventing it from snagging on other components. The first and second cable trays 15 and 16 provide ample space for the movable cable tray and limit its range of motion during the sliding of the T-shaped frame 6, preventing interference between the tray and the motor 2. Since the weight of the impeller and motor 2 primarily acts on the slide rail 4 near the base 3, the... The slide rail 4, located away from the base 3, mainly bears the centrifugal force when the motor 2 is running. The first cable tray 15 is opened on the slide rail 4, which is far away from the base 3. This not only facilitates the installation of power cables and other lines, but also ensures the strength of the slide rail 4. The T-shaped frame 6, which has a second cable tray 16, is equipped with a cable fixing frame 17. On the path where the power cables and other lines pass through the second cable tray 16 and connect to the motor 2, the power cables and other lines can be pre-fixed in the cable fixing frame 17 using tools such as cable ties. This prevents the airflow generated when the axial flow fan is running from blowing the power cables and other lines, and ensures the stability of the power cables and other lines in the body 1.

[0018] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. An axial flow fan structure, comprising a body (1) and a motor (2) disposed within the body (1), wherein a base (3) is provided on the outer side of the body (1), characterized in that: The body (1) is provided with a number of slide rails (4) arranged around the circumference of the body (1). All slide rails (4) are slidably connected to the same support frame for installing motor (2). The end of the body (1) is detachably connected to an end cover (5). The support frame includes a T-shaped frame (6) and a ring frame (7). One end of the T-shaped frame (6) is slidably connected to the slide rail (4), and the motor (2) is mounted on the ring frame (7) by fixing bolts (8). One end of the slide rail (4) is fixed with a stop block (9), and the end cover (5) is fixed with an abutment rod (10) sleeved on the slide rail (4). The end of the abutment rod (10) is fixed with a rubber block (11) for pressing the T-shaped frame (6) against the stop block (9).

2. The axial flow fan structure according to claim 1, characterized in that: The slide rail (4) has limit grooves (12) on both sides, and the abutment rod (10) and the T-shaped frame (6) are provided with inserts (13) that slide in the limit grooves (12).

3. The axial flow fan structure according to claim 1, characterized in that: The output end of the motor (2) is provided with a handle (14).

4. The axial flow fan structure according to claim 1, characterized in that: A first wire slot (15) is provided on the slide rail (4) located away from the foot (3), and a second wire slot (16) is provided on one of the T-shaped frames (6) that communicates with the first wire slot (15).

5. The axial flow fan structure according to claim 4, characterized in that: A cable holder (17) is provided on the T-shaped frame (6) with the second cable tray (16).

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