Filter screen anti-blocking structure of fan

Abstract

The utility model relates to the technical field of fans, in particular to a filter screen anti-blocking structure of a fan, which comprises a mounting bracket arranged in an air inlet pipe of a fan body and an annular mounting frame used for mounting a filter screen, the annular mounting frame comprises a mounting annular plate arranged in the circumferential direction of the air inlet pipe and a back frame connected to one side face of the mounting annular plate, the filter screen is fixed to the other side face of the mounting annular plate through screws, and guide rods penetrating through the mounting support are evenly distributed on the back frame in the circumferential direction of the mounting annular plate. The penetrating end of the guide rod is in threaded connection with a nut used for limiting the guide rod, and a vibration assembly used for driving the annular installation frame to vibrate is arranged on the installation support. Through the structure, the vibration assembly can drive the annular mounting frame to vibrate, namely vibration of the filter screen is achieved, impurities on the filter screen fall off, the filter screen is prevented from being blocked, the filtering effect of the filter screen is guaranteed, and the ventilation effect of the fan body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of fans, in particular to an anti-clogging structure for a filter screen of a fan. Background Art

[0002] A fan is a machine that relies on input mechanical energy to increase gas pressure and discharge gas. It is widely used in ventilation, dust removal and cooling processes in factories, mines, tunnels, cooling towers, vehicles, ships and buildings. At present, in the use of fans, in order to prevent foreign matter from entering and damaging the motor and fan blades, most fans will install a filter in the air inlet pipe to pre-filter the gas entering the fan. However, after long-term use, the filter will be blocked, resulting in a reduction in its filtering effect and affecting the ventilation efficiency of the fan.

[0003] For example, a silent fan disclosed in patent number CN207945101U has a filter assembly disposed in a cabinet and located on one side of an air inlet pipe, the filter assembly includes a filter screen disposed in the cabinet, a feed opening disposed on the bottom wall of the cabinet and located below the filter screen, and a receiving box detachably connected to the outer wall of the cabinet and located below the feed opening. Although the disclosed silent fan uses a filter screen to filter the air entering from the air inlet pipe, the impurities in the air can be intercepted by the filter screen, and the impurities fall into the receiving box under the action of gravity, which is convenient for cleaning and discharge, but when it is used for a long time, the filter screen will be blocked by impurities in the air, resulting in a reduction in its filtering effect and affecting the ventilation efficiency of the fan, so it needs to be improved. Utility Model Content

[0004] The utility model aims to provide a filter screen anti-clogging structure for a fan to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A filter anti-clogging structure for a fan comprises a mounting bracket arranged in an air inlet duct of a fan body and an annular mounting bracket for mounting the filter, the annular mounting bracket comprising a mounting ring plate arranged along the circumference of the air inlet duct and a back frame connected to one side of the mounting ring plate, the filter is fixed to the other side of the mounting ring plate by screws, guide rods penetrating the mounting bracket are evenly arranged on the back frame along the circumference of the mounting ring plate, a nut for limiting the guide rod is threadedly connected to the penetrating end of the guide rod, and a vibration component for driving the annular mounting bracket to vibrate is provided on the mounting bracket.

[0007] Preferably, the vibration component includes a rotating shaft rotatably arranged on the mounting bracket, one end of the rotating shaft passes through the back frame, a baffle is provided at the through end of the rotating shaft, a plurality of push rods are evenly arranged along the circumference of the rotating shaft on the side wall of the baffle facing the back frame, a convex ring which is sleeved on the outside of the rotating shaft is provided on the side of the back frame away from the mounting bracket, grooves for corresponding push rods to extend into are evenly arranged along the circumference on the outer wall of the convex ring, guiding inclined surfaces for corresponding push rods to slide out of the grooves are provided on the side walls of the grooves, a spring for pushing the back frame toward the baffle is sleeved on the rotating shaft between the mounting bracket and the back frame, and the rotation of the rotating shaft is used to drive the push rods to slide in or out of the grooves to realize the vibration of the annular mounting frame.

[0008] Preferably, the mounting bracket is provided with a motor for driving the rotating shaft to rotate.

[0009] Preferably, the convex ring faces the end wall of the baffle plate and is provided with a limiting groove communicating with the groove along its circumference at the edge.

[0010] Preferably, a mounting pipe communicating with the interior of the fan body is provided on the outer side wall of the fan body, and the mounting bracket is fixedly connected to the mounting pipe.

[0011] Preferably, an outer side wall of the mounting bracket is provided with a mounting ring portion along its circumference.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model drives the rotating shaft to rotate through the motor, which can drive the push rod to slide out or slide into the groove. With the action of the spring, the annular mounting frame can be better vibrated, so that the filter installed thereon vibrates, causing the debris attached to the filter to fall off, avoiding the clogging of the filter, and ensuring its filtering effect, that is, ensuring the ventilation effect of the fan body.

[0014] 2. The utility model, through the detachable setting of the air inlet pipe, allows the debris dropped into the air inlet pipe by the vibration of the filter to be discharged, thereby preventing the debris from accumulating in the air inlet pipe and affecting the normal use of the fan body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the installation of the filter anti-clogging structure on the fan body in the utility model.

[0016] Figure 2 It is a structural schematic diagram of the blower body in the utility model.

[0017] Figure 3 It is a schematic diagram of a partial explosion structure of the filter screen anti-clogging structure in the utility model.

[0018] Figure 4 It is a structural schematic diagram of the annular mounting frame in the utility model.

[0019] Figure 5 It is a structural schematic diagram of the mounting bracket in the utility model.

[0020] The meaning of the symbols in the figure is:

[0021] 100, fan body; 101, air outlet duct; 110, air inlet duct; 120, filter; 200, mounting tube; 300, mounting bracket; 310, annular mounting bracket; 311, guide rod; 410, mounting ring plate; 420, back frame; 431, nut; 440, convex ring; 441, groove; 442, guide slope; 443, limit groove; 501, mounting ring; 510, rotating shaft; 511, baffle plate; 512, push rod; 520, spring; 530, motor. Implementation

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are only used to explain the utility model but not to limit it.

[0023] The following is combined with Figure 1-Figure 5 This embodiment is described in further detail.

[0024] like Figure 1-4 As shown, in the present embodiment, a filter anti-clogging structure of a fan comprises a mounting bracket 300 arranged in the air inlet pipe 110 of the fan body 100 and an annular mounting bracket 310 for mounting a filter 120, the annular mounting bracket 310 comprises a mounting ring plate 410 arranged along the circumference of the air inlet pipe 110 and a back frame 420 connected to one side of the mounting ring plate 410, the filter 120 is fixed to the other side of the mounting ring plate 410 by screws, and guide rods 311 penetrating the mounting bracket 300 are evenly arranged on the back frame 420 along the circumference of the mounting ring plate 410, the penetrating end of the guide rod 311 is threadedly connected with a nut 431 for limiting the guide rod 311, and a vibration component for driving the annular mounting bracket 310 to vibrate is provided on the mounting bracket 300.

[0025] In actual use of this embodiment, the fan body 100 is of an existing structure, which includes an air inlet pipe 110 and an air outlet pipe 101, wherein the air inlet pipe 110 is in a round tube shape, and its end extends outward to form a mounting portion, and the mounting portion is fixedly mounted on the outer wall of the fan body 100 by screws, thereby realizing the detachable installation of the air inlet pipe 110;

[0026] The size of the filter 120 is adapted to the size of the air inlet pipe 110, that is, when the filter 120 is installed in the air inlet pipe 110, its side wall is slidably fitted with the inner wall of the air inlet pipe 110, so that the filter 120 can filter the gas entering the fan body 100 from the air inlet pipe 110;

[0027] In actual use, the filter screen 120 is fixed to one side wall of the mounting ring plate 410 by means of screws or other fasteners, wherein the back frame 420 is cross-shaped, and its end is bent to form a bent portion fixed to the other side wall of the mounting ring plate 410. With this structure, a space for the vibration assembly to be installed and operated is formed between the back frame 420 and the mounting ring plate 410.

[0028] Among them, by setting the guide rod 311 and the nut 431, in actual use, four guide rods 311 are provided, one end of which is fixed at the end of the back frame 420 respectively, and the other end passes through the mounting bracket 300, and is threadedly connected to the nut 431 at the other end, so that the guide rod 311 is slidably installed on the mounting bracket 300, that is, the sliding installation of the annular mounting bracket 310 on the mounting bracket 300 is realized, and at the same time, the annular mounting bracket 310 cannot rotate circumferentially;

[0029] Among them, by setting the vibration component, the vibration component can drive the annular mounting frame 310 to vibrate, thereby vibrating the filter 120 installed thereon, so that the debris filtered by the filter 120 can fall onto the air inlet pipe 110, thereby avoiding clogging of the filter 120 and ensuring its filtering effect;

[0030] When it is actually used, the sundries dropped into the air inlet pipe 110 can be discharged preferably by disassembling and assembling the air inlet pipe 110 .

[0031] Combination Figure 5 As shown, in this embodiment, the vibration assembly includes a rotating shaft 510 rotatably arranged on the mounting bracket 300, one end of the rotating shaft 510 is arranged through the back frame 420, a baffle 511 is provided at the through end of the rotating shaft 510, and a plurality of push rods 512 are evenly arranged along the circumference of the rotating shaft 510 on the side wall of the baffle 511 facing the back frame 420, and a convex ring 440 is provided on the side of the back frame 420 away from the mounting bracket 300, and the outer side of the convex ring 440 Grooves 441 for the corresponding push rods 512 to extend into are evenly distributed on the wall along its circumference, and guiding slopes 442 for the corresponding push rods 512 to slide out of the grooves 441 are provided on the side walls of the grooves 441. A spring 520 for pushing the back frame 420 to move toward the baffle 511 is sleeved on the rotating shaft 510 between the mounting bracket 300 and the back frame 420. The rotation of the rotating shaft 510 is used to drive the push rods 512 to slide into or out of the grooves 441 to realize the vibration of the annular mounting frame 310.

[0032] In actual use of this embodiment, one end of the rotating shaft 510 is rotatably mounted on the mounting bracket 300, and the other end passes through the center of the back frame 420. The baffle 511 is fixedly mounted on the through end of the rotating shaft 510 for mounting the push rod 512. At the same time, the push rod 512 is matched with the convex ring 440 to prevent the spring 520 from pushing the annular mounting frame 310 away from the rotating shaft 510.

[0033] One side wall of the groove 441 is provided with an inclined guide slope 442, and the other side wall is arranged along the axial direction of the convex ring 440, so that the rotation of the rotating shaft 510 can drive the baffle 511 to rotate, and then drive the push rod 512 to rotate. During the rotation of the push rod 512, the push rod 512 can slide out of the groove 441 along the guide slope 442, so that the annular mounting frame 310 moves toward the mounting bracket 300, so that the spring 520 is compressed. At this time, the push rod 512 continues to rotate, so that it slides into the other side wall of the adjacent groove 441 along the end wall of the convex ring 440. Since the side wall is arranged along the axial direction of the convex ring 440, under the reset action of the spring 520, the annular mounting frame 310 moves away from the mounting bracket 300, so that the push rod 512 hits the bottom wall of the groove 441, thereby causing the annular mounting frame 310 to vibrate, even if the filter 120 installed thereon vibrates. During this process, the rotating shaft 510 continues to rotate in the same direction, which can drive the push rod 512 to continuously slide into or out of the corresponding groove 441, thereby preferably achieving continuous vibration of the filter 120, thereby preferably avoiding clogging of the filter 120;

[0034] In actual use, the mounting bracket 300 is provided with a motor 530 for driving the rotating shaft 510 to rotate. The motor 530 can better control the rotation of the rotating shaft 510, so that the user can better control the vibration of the filter 120, making the use of the filter anti-clogging structure more convenient.

[0035] Combination Figure 4 As shown, in this embodiment, the convex ring 440 faces the end wall of the baffle plate 511 and is located at the edge thereof and is provided with a limiting groove 443 communicating with the groove 441 along its circumference.

[0036] By setting the limiting groove 443 in this embodiment, when multiple push rods 512 slide out of the groove 441 and move into the limiting groove 443, the push rods 512 can be restricted, that is, the multiple push rods 512 slide along the side wall of the limiting groove 443, which better avoids the shaking of the rotating shaft 510 in the convex ring 440, making it more stable to use.

[0037] Combination Figure 2 and Figure 5 As shown, in this embodiment, a mounting pipe 200 communicating with the inside of the fan body 100 is disposed on the outer side wall thereof, and the mounting bracket 300 is fixedly connected to the mounting pipe 200 .

[0038] In actual use of this embodiment, the air inlet pipe 110 is covered and installed outside the mounting pipe 200 , and the mounting pipe 200 is used to install the mounting bracket 300 , so that the filter anti-clogging structure can be installed on the fan body 100 .

[0039] In this embodiment, the outer wall of the mounting bracket 300 is provided with a mounting ring portion 501 along its circumference. In actual use, the mounting bracket 300 is in a circular ring shape and extends into the mounting tube 200. The diameter of the mounting ring portion 501 is adapted to the inner diameter of the mounting tube 200, so that the mounting ring portion 501 can fit the inner wall of the mounting tube 200 when extending into the mounting tube 200. The outer wall of the mounting tube 200 is provided with bolts that penetrate the mounting ring portion 501 to realize its installation in the mounting tube 200. Utilizing this structure, the mounting bracket 300 can be installed more stably on the mounting tube 200, and the installation of the filter net anti-clogging structure is made more stable.

[0040] Working principle: By extending the mounting ring 501 into the mounting tube 200 and fixing it with bolts, the air inlet pipe 110 is then covered outside the filter anti-clogging structure and fixed to the fan body 100 with screws. When the filter 120 needs to be vibrated, the motor 530 drives the rotating shaft 510 to rotate to drive the filter 120 to vibrate, thereby preferably avoiding impurities from clogging the filter 120 and affecting its filtering effect.

[0041] In short, the above is only a preferred embodiment of the present utility model, and all equivalent changes and modifications made according to the scope of the patent application of the present utility model should fall within the scope of the present utility model patent.

Claims

1. A filter screen anti-clogging structure for a fan, characterized in that: The invention comprises a mounting bracket (300) arranged in an air inlet pipe (110) of a fan body (100) and an annular mounting bracket (310) for mounting a filter screen (120); the annular mounting bracket (310) comprises a mounting ring plate (410) arranged along the circumference of the air inlet pipe (110) and a back frame (420) connected to one side of the mounting ring plate (410); the filter screen (120) is fixed to the other side of the mounting ring plate (410) by screws; guide rods (311) penetrating the mounting bracket (300) are evenly arranged on the back frame (420) along the circumference of the mounting ring plate (410); a nut (431) for limiting the guide rod (311) is threadedly connected to the through end of the guide rod (311); and a vibration component for driving the annular mounting bracket (310) to vibrate is provided on the mounting bracket (300).

2. The filter screen anti-clogging structure of a fan according to claim 1, characterized in that: The vibration assembly comprises a rotating shaft (510) rotatably arranged on a mounting bracket (300), one end of the rotating shaft (510) passes through a back frame (420), a baffle plate (511) is provided at the through end of the rotating shaft (510), a plurality of push rods (512) are evenly arranged along the circumference of the rotating shaft (510) on a side wall of the baffle plate (511) facing the back frame (420), a convex ring (440) sleeved on the outside of the rotating shaft (510) is provided on a side wall of the back frame (420) away from the mounting bracket (300), and a convex ring (440) is provided on an outer wall of the convex ring (440) along its circumference. Grooves (441) for corresponding push rods (512) to extend into are evenly distributed, and guide slopes (442) for corresponding push rods (512) to slide out of the grooves (441) are provided on the side walls of the grooves (441). A spring (520) for pushing the back frame (420) to move toward the baffle (511) is sleeved on the rotating shaft (510) between the mounting bracket (300) and the back frame (420). The rotating shaft (510) rotates to drive the push rods (512) to slide into or out of the grooves (441) to achieve vibration of the annular mounting frame (310).

3. The filter screen anti-clogging structure of a fan according to claim 2, characterized in that: The mounting bracket (300) is provided with a motor (530) for driving the rotating shaft (510) to rotate.

4. The filter screen anti-clogging structure of a fan according to claim 2, characterized in that: The convex ring (440) faces the end wall of the baffle plate (511) and is provided with a limiting groove (443) communicating with the groove (441) along its circumference at the edge.

5. The filter screen anti-clogging structure of a fan according to claim 1, characterized in that: An installation pipe (200) communicating with the inside of the fan body (100) is provided on the outer side wall of the fan body (100), and the installation bracket (300) is fixedly connected to the inside of the installation pipe (200).

6. The filter screen anti-clogging structure of a fan according to claim 5, characterized in that: The outer side wall of the mounting bracket (300) is provided with a mounting ring portion (501) along its circumference.

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