Explosion-proof fan

Abstract

The utility model discloses an explosion-proof fan which comprises a shell, one end of the shell is provided with a mesh enclosure and a limiting cover, the shell is provided with a limiting groove, the mesh enclosure is provided with a supporting part embedded into the limiting groove, the limiting cover is provided with a limiting part extending towards the center of the shell, an installation opening is formed between every two adjacent limiting parts, and the limiting cover is rotationally connected with the shell. The limiting cover rotates to limit separation of the mesh enclosure and the shell when the limiting part and the supporting part coincide, and the limiting cover rotates to enable the mesh enclosure to be separated from the shell when the mounting opening and the supporting part coincide. Through rotation of the limiting cover, the supporting part can rotate between the limiting part and the mounting opening, so that mounting and dismounting of the mesh enclosure are facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan technical field more particularly, relate to a kind of explosion-proof fan. BACKGROUND

[0002] Explosion-proof fan is often used in flammable, explosive environment ventilation. The dust attached to the blade of explosion-proof fan during operation can cause the weight of each blade to be inconsistent, resulting in bearing eccentric wear, increasing the vibration of the fan, and there is also a possibility of local abnormal temperature rise, affecting safety, so the blade needs to be cleaned and maintained regularly. A mesh cover is usually installed at the air inlet of the fan to protect the internal blades and motor. When cleaning the blades, the mesh cover needs to be disassembled. The existing mesh cover is usually fixed by fasteners, which is relatively cumbersome to disassemble. SUMMARY

[0003] The utility model aims at overcoming the deficiency of the prior art, and provides an explosion-proof fan with a mesh cover that is easy to disassemble.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an explosion-proof fan includes a housing, a mesh cover is installed at one end of the housing, and a limiting cover covers the edge of the mesh cover. The housing is provided with a limiting groove, the mesh cover is provided with a supporting part embedded in the limiting groove, the limiting cover is provided with a limiting part extending towards the center of the housing, the limiting parts between adjacent limiting parts form an installation opening, the limiting cover is rotatably connected to the housing, and the limiting cover is rotated to limit the mesh cover from separating from the housing when the limiting part coincides with the supporting part. When the installation opening coincides with the supporting part, the mesh cover can be separated from the housing.

[0005] Further, the limiting cover includes a limiting plate placed at one end of the housing where the mesh cover is located, the limiting plate is provided with an extension ring extending to the side surface of the housing, the side surface of the housing is provided with a rotating groove, and the extension ring is provided with a fixed plate embedded in the rotating groove.

[0006] Further, the side surface of the housing is provided with a first ring body and a second ring body, the first ring body and the second ring body form the rotating groove therebetween, the first ring body is closer to one end of the housing where the mesh cover is located relative to the second ring body, one side of the second ring body away from the first ring body extends a structural block, the structural block is provided with a telescopic rod that can be extended and retracted, and the telescopic rod can abut against the fixed plate to limit the rotation of the limiting cover.

[0007] Further, the structure block is provided with a telescopic slot penetrating the second ring body, the telescopic rod penetrates the telescopic slot and extends into a rotating slot, one side of the fixed plate is provided with a positioning slot facing the second ring body, the telescopic rod is inserted into the positioning slot to limit the rotation of the limiting cover.

[0008] Further, the side wall of the telescopic slot is provided with a guide slot, the telescopic rod is provided with a baffle extending into the guide slot, and a spring is arranged between the baffle and the end of the guide slot away from the fixed plate

[0009] Further, one side of the first ring body facing the second ring body is provided with a buffer pad, and the fixed plate abuts against the buffer pad.

[0010] In summary, the utility model has the following beneficial effects:

[0011] When the limiting cover rotates to make the limiting part coincide with the supporting part, the mesh cover can be separated from the shell; when the limiting cover rotates to make the mounting opening coincide with the supporting part, the mesh cover can be separated from the shell. The rotation of the limiting cover can make the supporting part rotate between the limiting part and the mounting opening, thereby facilitating the installation and disassembly of the mesh cover. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic view of the shell inside;

[0013] Figure 2 It is Figure 1 It is an enlarged view of A in the middle;

[0014] Figure 3 It is a structural schematic view of the shell;

[0015] Figure 4 It is a structural schematic view of the mesh cover;

[0016] Figure 5 It is a structural schematic view of the limiting cover;

[0017] The drawings show that the shell 100, the motor 110, the support frame 111, the impeller 120, the limiting slot 130, the mesh cover 200, the supporting part 210, the limiting cover 300, the limiting plate 310, the limiting part 311, the mounting opening 312, the extension ring 320, the fixed plate 321, the positioning slot 322, the rotating slot 400, the buffer pad 401, the first ring body 410, the second ring body 420, the structure block 500, the telescopic slot 510, the guide slot 520, the spring 521, the telescopic rod 600, and the baffle 610. DETAILED DESCRIPTION

[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0019] With reference to Figures 1 to 5 The embodiment discloses an explosion-proof fan, which comprises a shell 100, a motor 110 is installed in the shell 100 through a support frame 111, an impeller 120 is connected to an output shaft of the motor 110, a mesh cover 200 and a limiting cover 300 are installed at one end of a side where the impeller 120 is located on the shell 100. A plurality of limiting grooves 130 arranged at equal intervals in a ring shape are arranged on an end surface of the shell 100, the mesh cover 200 is provided with a plurality of support portions 210 embedded in the limiting grooves 130 and corresponding to the limiting grooves 130 one by one, so that the mesh cover 200 is fixed on the end surface of the shell 100. The limiting cover 300 is provided with a plurality of limiting portions 311 arranged at equal intervals and extending towards the center of the shell 100, an installation opening 312 is formed between adjacent limiting portions 311, and the number of the installation openings 312 is the same as that of the support portions 210. The limiting cover 300 is rotationally connected to the shell 100, when the limiting cover 300 is rotated to make the limiting portions 311 coincide with the support portions 210, the limiting portions 311 block the support portions 210, so that the support portions 210 are difficult to be taken out of the limiting grooves 130, thereby limiting the mesh cover 200 from being separated from the shell 100, and ensuring the stability of the fixation of the mesh cover 200; when the limiting cover 300 is rotated to make the installation openings 312 coincide with the support portions 210, the support portions 210 can be separated from the limiting grooves 130 at the installation openings 312, so that the mesh cover 200 can be separated from the shell 100, and the rotation of the limiting cover 300 can make the support portions 210 rotate between the limiting portions 311 and the installation openings 312, thereby facilitating the installation and dismounting of the mesh cover 200.

[0020] The limiting cover 300 comprises a limiting plate 310 arranged at one end of the shell 100 where the mesh cover 200 is arranged, and the limiting plate 310 is provided with an extension ring 320 extending to the side surface of the shell 100. The side surface of the shell 100 is provided with a first ring body 410 and a second ring body 420, and a rotating groove 400 is formed between the first ring body 410 and the second ring body 420. The extension ring 320 is provided with a fixing plate 321 embedded in the rotating groove 400. The side of the first ring body 410 facing the second ring body 420 is provided with a buffer pad 401 made of rubber and having good elasticity. When the limiting portion 311 coincides with the supporting portion 210, the fixing plate 321 abuts against the buffer pad 401, the fixing plate 321 extrudes the buffer pad 401 to make the buffer pad 401 deform, and at the same time, the friction between the fixing plate 321 and the buffer pad 401 is increased to restrict the rotation of the fixing plate 321 along with the extension ring 320, so that the limiting portion 311 and the supporting portion 210 are kept in the coinciding state, and the stability of the mesh cover 200 fixed to the end surface of the shell 100 is ensured.

[0021] The first ring body 410 is closer to the end of the shell 100 where the mesh cover 200 is arranged than the second ring body 420. The side of the second ring body 420 away from the first ring body 410 is provided with a structure block 500, and the structure block 500 is provided with an extension groove 510 penetrating through the second ring body 420. A telescopic rod 600 penetrates through the extension groove 510 and extends into the rotating groove 400. The side of the fixing plate 321 facing the second ring body 420 is provided with a positioning groove 322, and the telescopic rod 600 is inserted into the positioning groove 322 to restrict the rotation of the limiting cover 300. The position of the structure block 500 corresponds to the position of the buffer pad 401. When the fixing plate 321 abuts against the buffer pad 401, the telescopic rod 600 is also inserted into the positioning groove 322, so that the rotation of the fixing plate 321 is restricted from two directions, and the stability of the mesh cover 200 fixed to the end surface of the shell 100 is further ensured.

[0022] The side wall of the extension groove 510 is provided with a guide groove 520, and the telescopic rod 600 is provided with a baffle 610 extending into the guide groove 520. A spring 521 is arranged between the baffle 610 and the end of the guide groove 520 away from the fixing plate 321, and the spring 521 can push the telescopic rod 600 to move towards the fixing plate 321, so that the telescopic rod 600 is kept in the state of being inserted into the guide groove 520. When the limiting cover 300 needs to be rotated, the telescopic rod 600 is pulled away from the side where the mesh cover 200 is arranged, so that the telescopic rod 600 is pulled out of the positioning groove 322, and then the limiting cover 300 is rotated with force to make the fixing plate 321 disengage from the buffer pad 401, so that the limiting cover 300 can be freely rotated.

[0023] The above merely is preferred implementation manner of the present application, the protection scope of the present application is not only limited to the above examples, and belongs to the technical scheme under the idea of the present application all belongs to the protection scope of the present application. It should be pointed out that, for ordinary skilled person in the art, under the premise of not departing from the principle of the present application, some improvements and decorations, these improvements and decorations should also be considered as the protection scope of the present application.

Claims

1. An explosion-proof fan, characterized by, The utility model provides a shell (100) one end is equipped with the mesh cover (200) and the limiting cover (300) of mounting, the shell (100) is provided with the limiting groove (130), the mesh cover (200) is provided with the support part (210) embedding in the limiting groove (130), the limiting cover (300) is provided with the limiting part (311) extending towards the center of the shell (100), and the limiting part (311) between adjacent constitutes the installation opening (312), the limiting cover (300) is rotatably connected with the shell (100), and when the limiting cover (300) rotates and makes the limiting part (311) coincide with the support part (210), the mesh cover (200) is separated from the shell (100) and is limited, and when the limiting cover (300) rotates and makes the installation opening (312) coincide with the support part (210), the mesh cover (200) can be separated from the shell (100).

2. An explosion-proof fan as claimed in claim 1, characterized in that The limiting cover (300) includes a limiting plate (310) disposed at one end of the shell (100) where the mesh cover (200) is located, and the limiting plate (310) is provided with an extension ring (320) extending to the side surface of the shell (100). The side surface of the shell (100) is provided with a rotating groove (400), and the extension ring (320) is provided with a fixed plate (321) embedded in the rotating groove (400).

3. An explosion-proof fan as claimed in claim 2, characterized in that The side surface of the shell (100) is provided with a first ring body (410) and a second ring body (420), and the first ring body (410) and the second ring body (420) constitute the rotating groove (400). The first ring body (410) is closer to one end of the shell (100) where the mesh cover (200) is located than the second ring body (420). The second ring body (420) extends a structure block (500) away from the first ring body (410). The structure block (500) is provided with a telescopic rod (600) that can be extended and retracted. The telescopic rod (600) can abut against the fixed plate (321) to limit the rotation of the limiting cover (300).

4. An explosion-proof fan as claimed in claim 3, characterized in that The structure block (500) is provided with a telescopic groove (510) penetrating through the second ring body (420). The telescopic rod (600) penetrates through the telescopic groove (510) and extends into the rotating groove (400). The fixed plate (321) is provided with a positioning groove (322) on the side facing the second ring body (420). The telescopic rod (600) is inserted into the positioning groove (322) to limit the rotation of the limiting cover (300).

5. An explosion-proof fan as claimed in claim 4, characterized in that The side wall of the telescopic groove (510) is provided with a guide groove (520), and the telescopic rod (600) is provided with a baffle (610) extending into the guide groove (520). The baffle (610) and the end of the guide groove (520) away from the fixed plate (321) are provided with a spring (521).

6. An explosion-proof fan as claimed in claim 3, wherein The first ring body (410) is provided with a buffer pad (401) on one side facing the second ring body (420), and the fixing plate (321) abuts against the buffer pad (401).

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