Anti-explosion wall type axial flow fan

Abstract

The utility model discloses an anti-explosion wall type axial flow fan which comprises an impeller, a motor is arranged on one side of the impeller, a protection device is installed on the outer side of the motor, the protection device comprises an installation bin and a connecting frame, the installation bin is arranged on the outer side of the motor, the connecting frame is arranged in the installation bin, and abutting devices are arranged on the connecting frame and on the two sides of the installation bin. The abutting device comprises an adaptive sleeve, an abutting sleeve, an abutting rod, a reducing groove, an abutting groove, an abutting ball and a rolling groove, the reducing groove is formed in the adaptive sleeve, the abutting groove is formed in the outer side of the abutting rod, the abutting ball is installed in the rolling groove, the rolling groove is formed in the side wall of the abutting sleeve, and a locking mechanism is arranged on the outer side of the abutting sleeve. The locking mechanism comprises a fixed block, a movable spring, a movable hole, a movable block, a movable plate, a supporting rod, a limiting sleeve, a movable block, a movable spring and a limiting block, the movable spring is connected with the fixed block and the movable block, and the problems of a traditional device in the aspects of protection performance, assembly and disassembly convenience and installation stability are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of explosion -proof wall type axial flow fan more specifically, it relates to an explosion -proof wall type axial flow fan. BACKGROUND

[0002] In the field of explosion -proof wall type axial flow fan, equipment protection performance and assembly convenience directly influence operation safety and maintenance efficiency, however, the explosion -proof axial flow fan on the current market still has many technical defects in practical application, these problems not only influence equipment safety, but also can lead to service life reduction and maintenance cost increase.

[0003] The primary problem is poor protection performance, and the explosion -proof axial flow fan in the prior art has significant defects: first, the motor is highly exposed, and lacks effective protection measures; second, the impeller is simply placed in the flow passage cylinder, and the protection is not comprehensive; third, the key components are exposed to the environment; in addition, the deficiencies of this design not only reduce the protection level of the equipment, but also can lead to safety hazards due to improper protection, increasing the risk of accidents and maintenance difficulty.

[0004] More prominent is the complicated assembly and disassembly, and there are obvious problems in the assembly and maintenance process of the explosion -proof axial flow fan: first, multiple professional tools are needed for assembly and disassembly; second, the space in some positions is narrow, and the tool operation is limited; third, the maintenance process is complex and inefficient; in addition, the complicated disassembly process not only increases the maintenance difficulty, but also can cause component damage due to improper operation, and the deficiencies of this design not only reduce the maintenance efficiency, but also can affect the equipment performance due to operation errors, increasing the maintenance cost and manpower investment.

[0005] The most critical is the poor installation stability, and some equipment has realized the function of quick assembly and disassembly, but there are serious problems: first, the connection structure is designed simply, and the vibration during fan operation can cause the structure to loosen; second, the airflow impact can cause the displacement of components, and the loosening of the structure not only affects the running stability, but also can cause the components to fall off due to fixation failure, and the deficiencies of this design not only affect the running safety, but also can cause accidents due to unstable structure, reducing the reliability of the equipment. INVENTION CONTENTS

[0006] (I) Technical problems solved

[0007] In view of the problems in the prior art, the utility model provides an explosion -proof wall type axial flow fan to solve the technical problems mentioned in the background art.

[0008] (II) Technical scheme

[0009] To achieve the above object, the utility model provides following technical scheme: an explosion -proof wall type axial flow fan, including impeller, the one side of impeller is detachably equipped with motor, motor output and impeller axle core connection, the outside of motor is equipped with protection device, the protection device includes installation warehouse and connecting frame, the installation warehouse sets up the outside of motor, the connecting frame is fixedly arranged in the inside of installation warehouse, the motor is detachably connected with the connecting frame, the connecting frame and the both sides of installation warehouse all are provided with abutment device, the abutement device includes adaptation sleeve, abutment sleeve, abutment rod, variable diameter groove, abutment groove, abutment ball and rolling groove, the adaptation sleeve rotation is installed in the outside of abutment sleeve, the abutment sleeve is detachably covered in the outside of abutment rod, the variable diameter groove is set up in the adaptation sleeve, the abutment groove is set up in the outside of abutment rod, the abutment ball is rollingly installed in the rolling groove, and a part of the abutment ball is clamped into the abutment groove, the rolling groove is set up in the side wall of abutment sleeve, the outside of abutment sleeve is provided with locking mechanism, the locking mechanism includes fixed block, mobile spring, mobile hole, mobile block, moving plate, support rod, limit sleeve, movable block, movable spring and limit block, the fixed block is fixedly installed in the outside of abutment sleeve, the mobile spring both ends are connected with fixed block and mobile block respectively, the mobile hole is set up on the moving plate, the mobile block is fixedly connected on the one side of moving plate, the moving plate rotation is installed in the outside of abutement sleeve, the support rod is fixedly connected on the one side of limit sleeve, the limit sleeve is covered in the outside of abutment sleeve, the movable block is arranged on the one side of adaptation sleeve, the movable spring both ends are connected with adjacent two movable blocks, and multiple limit blocks are fixedly installed in the outside of abutment sleeve.

[0010] The utility model further sets up, one side of installation warehouse is detachably equipped with filter plate, the filter plate sets up in input.

[0011] The utility model further sets up, the other side of installation warehouse is detachably equipped with installation frame, a plurality of protection blocks are fixedly equipped on one side of installation frame, and a plurality of protection blocks are installed on one side of installation frame in an inclined manner.

[0012] The utility model further sets up, one side of limit sleeve is connected with support spring, the support spring is movably covered in the outside of support rod, and the other end of support spring is connected with moving plate in a contact mode.

[0013] The utility model further sets up, one side of movable block is rotatably equipped with gyro wheel, the gyro wheel is clamped between corresponding two limit blocks, and smooth operation is ensured.

[0014] The utility model further sets up, one side of adaptation sleeve is fixedly equipped with a plurality of slide rails, the inside of movable block is equipped with sliding slot, the sliding slot is matched with slide rail, and the accurate movement of movable block is ensured.

[0015] The utility model further sets up, the inside fixed of restriction cover is equipped with guide block, the outside of abutment cover is equipped with a plurality of guide groove correspondingly, the guide block is arranged in the guide groove, realized the direction and location of restriction cover.

[0016] The utility model further sets up, the rolling groove is recessed structure design, prevents abutment ball and rolls to abutment cover inside.

[0017] (Three) beneficial effect

[0018] Compared with the prior art, the utility model provides a kind of anti-explosion wall type axial flow fan, with following

[0019] Beneficial effect:

[0020] 1, protective device is precisely matched by installation bin, connecting frame, filter plate, mounting frame and protection block, a comprehensive protection system is constructed, installation bin provides closed protection space for motor and impeller, the setting of filter plate realizes air inlet filtration, and the inclined installation of protection block ensures rainproof effect, this structure not only realizes the protection of motor and impeller by installation bin, but also prevents impurities from entering by filter plate, and rainwater is blocked by inclined protection block, effectively solve the problem of poor protection performance of traditional device, improve equipment protection level, realize comprehensive protection.

[0021] 2, abutment device is cooperated by adapting sleeve, abutment cover, abutment rod, variable-diameter groove, abutment groove, abutment ball and rolling groove, and forms a set of convenient quick disassembly system, the rotating design of adapting sleeve and abutment cover provides operating basis, the cooperation of abutment ball and abutment groove realizes clamping and fixing, and the setting of variable-diameter groove and rolling groove ensures the movement of ball, this structure not only realizes quick locking by ball groove cooperation, but also provides convenient operation by rotating mechanism, effectively solve the problem of complicated assembly and disassembly of traditional device, improve maintenance efficiency, realize convenient disassembly.

[0022] 3, locking mechanism is precisely matched by fixed block, moving spring, moving hole, moving block, moving plate, support rod, restriction cover, movable block, movable spring and limit block, and a reliable locking system is constructed, the design of moving plate and restriction cover provides unlocking control, the cooperation of movable spring and movable block realizes position reset, and the setting of idler wheel and limit block ensures positioning, this structure not only realizes position fixation by multiple locking, but also provides automatic protection by elastic reset, and ensures movement accuracy by guiding cooperation, effectively solve the problem of poor installation stability of traditional device, prevent vibration loosening, and ensure reliable connection. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is whole structure schematic diagram of a kind of anti-explosion wall type axial flow fan in the utility model;

[0024] Figure 2 It is the dispersion structure schematic view after the section of the utility model;

[0025] Figure 3 It is the structure schematic view of the abutting device and the locking mechanism part of the utility model;

[0026] Figure 4 It is the dispersion structure schematic view of the section of the abutting device and the locking mechanism part of the utility model;

[0027] Figure 5 It is the dispersion structure schematic view of the section of the abutting device and the locking mechanism part of the utility model;

[0028] In the drawing: 1, impeller; 2, motor; 3, installation bin; 4, connecting frame; 5, adaptive sleeve; 6, abutting sleeve; 7, abutting rod; 8, variable-diameter groove; 9, abutting groove; 10, abutting ball; 11, rolling groove; 12, fixed block; 13, moving spring; 14, moving hole; 15, moving block; 16, moving plate; 17, support rod; 18, limiting sleeve; 19, movable block; 20, movable spring; 21, limit block; 22, filter plate; 23, installation frame; 24, protection block; 25, support spring; 26, roller; 27, slide rail; 28, slide groove; 29, guide block; 30, guide groove. DETAILED DESCRIPTION

[0029] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0030] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0031] In the utility model, unless otherwise stated, the orientation such as "up, down" is generally for the direction shown in the drawing, or for the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally for the left and right shown in the drawing; "inner, outer" refers to the inner and outer relative to the contour of each component itself, but the above orientation words are not used to limit the utility model.

[0032] Please refer to Figures 1-5An explosion-proof wall-mounted axial flow fan includes an impeller 1. A motor 2 is detachably mounted on one side of the impeller 1, and the output end of the motor 2 is connected to the shaft of the impeller 1. A protective device is installed on the outside of the motor 2. The protective device includes an installation chamber 3 and a connecting frame 4. The installation chamber 3 is located outside the motor 2, and the connecting frame 4 is fixedly located inside the installation chamber 3. The motor 2 is detachably connected to the connecting frame 4. Abutment devices are provided on the connecting frame 4 and on both sides of the installation chamber 3. The abutment devices include an adapter 5, an abutment sleeve 6, an abutment rod 7, a reducing groove 8, an abutment groove 9, an abutment ball 10, and a rolling groove 11. The adapter 5 is rotatably mounted on the outside of the abutment sleeve 6. The abutment sleeve 6 is detachably fitted on the outside of the abutment rod 7. The reducing groove 8 is opened in the adapter 5, the abutment groove 9 is opened on the outside of the abutment rod 7, and the abutment ball 10 is rolled in the rolling groove 11, with a portion of the abutment ball 10 inserted into the abutment groove 11. In groove 9, rolling groove 11 is formed on the side wall of abutting sleeve 6. A locking mechanism is provided on the outside of abutting sleeve 6. The locking mechanism includes a fixed block 12, a moving spring 13, a moving hole 14, a moving block 15, a moving plate 16, a support rod 17, a limiting sleeve 18, a movable block 19, a movable spring 20, and a limiting block 21. The fixed block 12 is fixedly installed on the outside of abutting sleeve 6. The two ends of the moving spring 13 are respectively connected to the fixed block 12 and the moving block 15. The moving hole 14 is formed on the moving plate 16. The moving block 15 is fixedly connected to one side of the moving plate 16. The moving plate 16 is rotatably installed on the outside of abutting sleeve 6. The support rod 17 is fixedly connected to one side of the limiting sleeve 18. The limiting sleeve 18 is fitted on the outside of abutting sleeve 6. The movable block 19 is set on one side of the adapter sleeve 5. The two ends of the movable spring 20 are connected to two adjacent movable blocks 19. Multiple limiting blocks 21 are fixedly installed on the outside of abutting sleeve 6.

[0033] A filter plate 22 is detachably installed on one side of the installation chamber 3, and the filter plate 22 is located at the input end.

[0034] On the other side of the installation compartment 3, there is a detachable installation frame 23. Multiple protective blocks 24 are fixedly installed on one side of the installation frame 23. The multiple protective blocks 24 are installed at an angle on one side of the installation frame 23.

[0035] In this embodiment, when the device is needed, the motor 2 installed in the installation chamber 3 is turned on. The motor 2 drives the impeller 1 connected to the output end to rotate. Then, the air enters the installation chamber 3 after being filtered by the filter plate 22. The filter plate 22 can effectively intercept and block impurities and foreign objects in the air, preventing these impurities and foreign objects from affecting the motor 2 and the impeller 1. The air then flows out of the installation chamber 3 through the gap between the protective blocks 24, thus achieving air discharge. The installation frame 23 and the protective blocks 24 are located on the outside of the building. The inclined protective blocks 24 can effectively prevent rainwater from entering the installation chamber 3 and affecting the motor 2 and the impeller 1, thereby extending the service life of the equipment and ensuring stable use of the equipment.

[0036] Please see Figures 3-5As a further embodiment of the whole device: the limiting sleeve 18 is connected on one side with a supporting spring 25, which is movably sleeved on the outside of the supporting rod 17, and the other end of the supporting spring 25 is in contact with the moving plate 16.

[0037] The movable block 19 is rotatably provided on one side with a roller 26, which is clamped between the corresponding two limiting blocks 21.

[0038] The adapting sleeve 5 is fixed on one side with a plurality of sliding rails 27, and the inside of the movable block 19 is provided with a sliding groove 28, which is adapted with the sliding rail 27.

[0039] The inside of the limiting sleeve 18 is fixedly provided with a guide block 29, and the outside of the abutting sleeve 6 is correspondingly provided with a plurality of guide grooves 30, and the guide block 29 is slidably arranged in the guide groove 30.

[0040] The rolling groove 11 is designed in an inner recessed structure.

[0041] More specifically, when the whole needs to be split, first remove the abutting sleeve 6 and abutting rod 7 on one side of the filter plate 22, first rotate the moving plate 16 forward, the moving plate 16 drives the moving block 15 installed on one side to rotate, the moving block 15 and the fixed block 12 cooperate to press the moving spring 13, at the same time, the moving plate 16 drives the moving hole 14 to rotate, when the moving spring 13 is pressed to the limit, the moving hole 14 is just rotated to the position concentric with the support rod 17, then push the limiting sleeve 18, the limiting sleeve 18 drives the guide block 29 to slide along the guide groove 30, and the limiting sleeve 18 drives the support rod 17 to slide into the moving hole 14, at the same time, the limiting sleeve 18 and the moving plate 16 cooperate to press the support spring 25, then the limiting sleeve 18 no longer limits the roller 26, then rotate the adapter sleeve 5 forward, the adapter sleeve 5 drives the movable block 19 to rotate through the cooperation of the slide rail 27 and the slide groove 28 on one side, then the movable block 19 drives the roller 26 to roll out from between the two limiting blocks 21, and the roller 26 drives the movable block 19 to slide outward along the slide rail 27 and the slide groove 28, at the same time, the movable block 19 will drive the movable spring 20 to stretch outward, at this time, the adapter sleeve 5 will drive the internally provided variable-diameter groove 8 to rotate forward synchronously, then the wider side of the variable-diameter groove 8 corresponds to the position of the rolling groove 11, then pull the abutting sleeve 6 and the abutting rod 7 to the two sides respectively, so that the abutting rod 7 drives the inner wall of the abutting groove 9 to press the outer wall of the abutting ball 10, then the abutting groove 9 rolls along the rolling groove 11, so that most of the abutting ball 10 enters the variable-diameter groove 8, then the abutting sleeve 6 and the abutting rod 7 can be removed, then remove all the abutting sleeves 6 and the abutting rods 7 provided outside the installation bin 3 according to the above steps, then take the installation frame 23 and the filter plate 22 from both sides of the installation bin 3 respectively, then remove the abutting sleeves 6 and the abutting rods 7 provided on the connecting frame 4 according to the above steps, then take the motor 2 and the impeller 1 out from the inside of the installation bin 3, when the whole device needs to be assembled, first place the motor 2 and the impeller 1 in the installation bin 3 and ensure that they are in the correct direction, then align the reserved hole on the motor 2 and the reserved hole on the connecting frame 4, then pass the abutting rod 7 through the reserved hole on the motor 2 and the reserved hole on the connecting frame 4 from one side, then fit the abutting sleeve 6 to the outside of the abutting rod 7 from the other side, then rotate the adapter sleeve 5 reversely, the adapter sleeve 5 drives the movable block 19 and the roller 26 to rotate reversely through the slide rail 27 and the slide groove 28, and the adapter sleeve 5 drives the internally provided variable-diameter groove 8 to rotate reversely, then the inner wall of the variable-diameter groove 8 gradually presses the abutting ball 10 inward, so that the abutting ball 10 rolls reversely along the rolling groove 11, so that part of the abutting ball 10 reenters the abutting groove 9 to form a clamping relationship, at this time, the adapter sleeve 5 cannot rotate, and the movable block 19 drives the roller 26 to move between the two original limiting blocks 21, then the movable spring 20 resets to pull the movable block 19 to slide inward along the slide rail 27 and the slide groove 28, then the movable block 19 will drive the roller 26 to reenter between the two original limiting blocks 21, then release the limiting sleeve 18,The supporting spring 25 pushes the limiting sleeve 18 to drive the guide block 29 to slide and reset along the guide groove 30, then the limiting sleeve 18 drives the supporting rod 17 to slide and reset, then the supporting rod 17 no longer limits the moving plate 16 through the moving hole 14, then the moving spring 13 pushes the moving block 15 to rotate and reset, then the moving block 15 drives the moving hole 14 to rotate and reset to a position not corresponding to the supporting rod 17 through the moving plate 16, then the supporting rod 17 supports the limiting sleeve 18, and the limiting sleeve 18 is limited by the guide block 29 and the guide groove 30, so that the limiting sleeve 18 cannot easily slide, then the inner wall of the limiting sleeve 18 re-limits the outer side of the roller 26, so that the roller 26 and the movable block 19 cannot slide outward, achieving limiting of the adapting sleeve 5, thereby ensuring stable installation, then other abutting sleeves 6 and abutting rods 7 are installed on the connecting frame 4 one by one, achieving installation of the motor 2, then the installation frame 23 and the filter plate 22 are installed on the corresponding two sides of the installation bin 3 according to the above steps.

[0042] In summary, when the device is in use or operation: when the device needs to be used, the motor 2 provided in the installation bin 3 is turned on, the motor 2 drives the impeller 1 connected to the output end to rotate, then the air enters the installation bin 3 after being filtered by the filter plate 22, the filter plate 22 can effectively intercept and block impurities and foreign matters in the air, preventing the impurities and foreign matters from affecting the motor 2 and the impeller 1, then the air in the installation bin 3 flows out of the installation bin 3 through the gap between the protection blocks 24, achieving air exhaust, the installation frame 23 and the protection blocks 24 are located on the outside of the building, and the inclined protection blocks 24 can effectively prevent external rainwater from entering the installation bin 3 and affecting the motor 2 and the impeller 1, thereby prolonging the service life of the device and ensuring stable use of the device.

[0043] When the whole needs to be split, the abutting sleeve 6 and the abutting rod 7 on one side of the filter plate 22 are first disassembled, the moving plate 16 is first rotated forward, the moving plate 16 drives the moving block 15 installed on one side to rotate, the moving block 15 and the fixed block 12 cooperate to extrude the moving spring 13, at the same time, the moving plate 16 drives the moving hole 14 to rotate, when the moving spring 13 is extruded to the limit, the moving hole 14 is just rotated to the position concentric with the supporting rod 17, then the limiting sleeve 18 is pushed, the limiting sleeve 18 drives the guide block 29 to slide along the guide groove 30, and the limiting sleeve 18 drives the supporting rod 17 to slide into the moving hole 14, at the same time, the limiting sleeve 18 and the moving plate 16 cooperate to extrude the supporting spring 25, then the limiting sleeve 18 no longer limits the roller 26, then the adaptive sleeve 5 is rotated forward, the adaptive sleeve 5 drives the movable block 19 to rotate through the cooperation of the slide rail 27 and the slide groove 28 on one side, then the movable block 19 drives the roller 26 to roll out from between the two limiting blocks 21, and the roller 26 drives the movable block 19 to slide outward along the slide rail 27 and the slide groove 28, at the same time, the movable block 19 drives the movable spring 20 to stretch outward, at this time, the adaptive sleeve 5 drives the internally provided variable-diameter groove 8 to rotate forward synchronously, then the wider side of the variable-diameter groove 8 corresponds to the position of the rolling groove 11, then the abutting sleeve 6 and the abutting rod 7 are pulled to two sides respectively, so that the abutting rod 7 extrudes the outer wall of the abutting ball 10 through the inner wall of the abutting groove 9, then the abutting groove 9 rolls along the rolling groove 11, so that most of the abutting ball 10 enters the variable-diameter groove 8, then the abutting sleeve 6 and the abutting rod 7 can be disassembled, then all the abutting sleeves 6 and the abutting rods 7 provided outside the installation bin 3 are disassembled according to the above steps, then the installation frame 23 and the filter plate 22 are taken out from both sides of the installation bin 3 respectively, then the abutting sleeves 6 and the abutting rods 7 provided on the connecting frame 4 are disassembled according to the above steps, then the motor 2 and the impeller 1 are disassembled from the inside of the installation bin 3, when the whole device needs to be assembled, first, the motor 2 and the impeller 1 are placed in the installation bin 3, and the direction is ensured to be correct, then the reserved hole on the motor 2 and the reserved hole on the connecting frame 4 are aligned, then the abutting rod 7 is inserted from one side through the reserved hole on the motor 2 and the reserved hole on the connecting frame 4, then the abutting sleeve 6 is sleeved on the outside of the abutting rod 7 from the other side, then the adaptive sleeve 5 is reversely rotated, the adaptive sleeve 5 drives the movable block 19 and the roller 26 to rotate reversely through the slide rail 27 and the slide groove 28, and the adaptive sleeve 5 drives the internally provided variable-diameter groove 8 to rotate reversely, then the inner wall of the variable-diameter groove 8 gradually extrudes the abutting ball 10 inward, so that the abutting ball 10 rolls reversely along the rolling groove 11, so that part of the abutting ball 10 is re-clamped into the abutting groove 9 to form a clamping relationship, at this time, the adaptive sleeve 5 cannot be rotated, and the movable block 19 drives the roller 26 to move between the original two limiting blocks 21, then the movable spring 20 resets the movable block 19 to slide inward along the slide rail 27 and the slide groove 28, then the movable block 19 drives the roller 26 to be re-clamped between the original two limiting blocks 21, then the limiting sleeve 18 is released,The support spring 25 pushes the limiting sleeve 18 to drive the guide block 29 to slide and reset along the guide groove 30, then the limiting sleeve 18 drives the support rod 17 to slide and reset, then the support rod 17 no longer limits the moving plate 16 through the moving hole 14, then the moving spring 13 pushes the moving block 15 to rotate and reset, then the moving block 15 drives the moving hole 14 to rotate and reset to a position not corresponding to the support rod 17 through the moving plate 16, then the support rod 17 supports the limiting sleeve 18, and the limiting of the guide block 29 and the guide groove 30 makes the limiting sleeve 18 unable to slide easily, then the inner wall of the limiting sleeve 18 limits the outer side of the roller 26 again, so that the roller 26 and the movable block 19 cannot slide outward, the limiting of the adaptive sleeve 5 is realized, so as to ensure the stable installation, then the other abutting sleeves 6 and the abutting rods 7 are installed on the connecting frame 4 one by one, the installation of the motor 2 is realized, then the installation frame 23 and the filter plate 22 are installed on the corresponding two sides of the installation bin 3 according to the above steps.

[0044] In all the schemes mentioned above, the connection between two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which will not be described one by one. In the above, whenever it is mentioned that it is fixedly connected, it is preferred to consider welding. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof wall type axial flow fan comprising an impeller (1) and a motor (2) provided on one side of the impeller (1), characterized in that: The motor (2) is provided with a protective device outside the motor (2), the protective device comprises a mounting bin (3) and a connecting frame (4), the mounting bin (3) is arranged outside the motor (2), the connecting frame (4) is arranged inside the mounting bin (3), and abutting devices are arranged on the connecting frame (4) and two sides of the mounting bin (3), the abutting devices comprise an adapting sleeve (5), an abutting sleeve (6), an abutting rod (7), a variable-diameter groove (8), an abutting groove (9), an abutting ball (10) and a rolling groove (11), the variable-diameter groove (8) is arranged in the adapting sleeve (5), the abutting groove (9) is arranged outside the abutting rod (7), the abutting ball (10) is arranged in the rolling groove (11), the rolling groove (11) is arranged in the side wall of the abutting sleeve (6), the abutting sleeve (6) is provided with a locking mechanism outside, the locking mechanism comprises a fixed block (12), a moving spring (13), a moving hole (14), a moving block (15), a moving plate (16), a supporting rod (17), a limiting sleeve (18), a movable block (19), a movable spring (20) and a limiting block (21), the moving spring (13) is connected with the fixed block (12) and the moving block (15), the moving hole (14) is arranged on the moving plate (16), the supporting rod (17) is connected to one side of the limiting sleeve (18), the movable block (19) is arranged on one side of the adapting sleeve (5), the movable spring (20) is connected with two adjacent movable blocks (19), and the plurality of limiting blocks (21) are arranged outside the abutting sleeve (6).

2. The explosion-proof wall-mounted axial flow fan according to claim 1, characterized in that: The mounting bin (3) is detachably provided with a filter plate (22) on one side, and the filter plate (22) is arranged on the input end.

3. The explosion-proof wall-mounted axial flow fan according to claim 2, characterized in that: The mounting bin (3) is detachably provided with a mounting frame (23) on the other side, a plurality of protective blocks (24) are fixedly arranged on one side of the mounting frame (23), and the plurality of protective blocks (24) are obliquely arranged on one side of the mounting frame (23).

4. A flameproof axial wall fan according to any one of claims 1 to 3, characterized in that: The limiting sleeve (18) is connected with a supporting spring (25) on one side, the supporting spring (25) is movably sleeved outside the supporting rod (17), and the other end of the supporting spring (25) is connected with the moving plate (16) in a contact mode.

5. The explosion-proof wall-mounted axial flow fan according to claim 4, characterized in that: A roller (26) is rotatably arranged on one side of the movable block (19), and the roller (26) is clamped between two corresponding limiting blocks (21).

6. The explosion-proof wall-mounted axial flow fan according to claim 5, characterized in that: A plurality of sliding rails (27) are fixedly arranged on one side of the adapting sleeve (5), a sliding groove (28) is arranged on the inner side of the movable block (19), and the sliding groove (28) is matched with the sliding rail (27).

7. The explosion-proof wall-mounted axial flow fan according to claim 6, characterized in that: A guide block (29) is fixedly arranged on the inner side of the limiting sleeve (18), a plurality of guide grooves (30) are arranged on the outer side of the abutting sleeve (6), and the guide block (29) is slidably arranged in the guide groove (30).

8. The explosion-proof wall-mounted axial flow fan according to claim 1, characterized in that: The rolling groove (11) is designed in an inner recess structure.

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