CN109687315B - Communication cabinet with heat dissipation dustproof function - Google Patents

Abstract

The invention discloses a communication cabinet with heat dissipation and dust prevention functions, which comprises supporting legs, a cabinet body, a top cover, a ventilation pipe, a heat dissipation fan, a side door, a safety lock, a fixed frame, a ventilation groove, a through hole, an air deflector, a heat dissipation plate, a heat dissipation net, a fixed plate, an exhaust fan, an air inlet groove, a first filter screen, a connecting frame, a spring, a second filter screen, a mounting frame, a miniature motor, a transmission shaft, a cam, an arc-shaped block, a pull plate, an ash accumulation groove, a stepping motor, a first connecting rod, a rotating shaft, a second connecting rod, a sliding block, a limit groove, a push rod, a push plate, a sliding groove and an ash discharge hole. The invention has reasonable structure, the first connecting rod is driven to rotate by the operation of the stepping motor, the second connecting rod is driven to rotate by the first connecting rod, the sliding block is driven to reciprocate in the limiting groove by the second connecting rod, the sliding block drives the pushing plate to reciprocate in the fixed plate by the pushing plate, so that dust falling in the fixed plate is pushed up, and the dust is discharged through the dust discharging hole in the fixed plate, thereby facilitating the discharge of the dust in the cabinet body, facilitating the cleaning and improving the heat radiation capability.

Description

A communication cabinet with heat dissipation and dustproof function

technical field

The invention relates to a communication cabinet, in particular to a communication cabinet with heat dissipation and dustproof functions, belonging to the technical field of communication cabinet applications.

Background technique

Outdoor communication cabinet is a kind of outdoor cabinet, which refers to the cabinet made of metal or non-metal materials that is directly under the influence of natural climate and does not allow unauthorized operators to enter and operate. It provides wireless communication stations or wired network station workstations. Outdoor physical working environment and safety system equipment, with the rapid development of the communication industry, outdoor communication cabinets are widely used due to their low cost and wide coverage. Since outdoor communication cabinets are usually safe outdoors, the working environment is relatively harsh.

Existing communication cabinets are usually provided with ventilation holes facing downwards on the side of the cabinet body. Since the openings of the ventilation holes are facing downwards, the heat dissipation and ventilation effect will be affected, and the service life of the communication cabinet will be affected. filter, but dust is easy to stay on the filter, which will block the filter and affect the ventilation and heat dissipation of the communication cabinet. In addition, the top of the communication cabinet is generally set on a plane, which is prone to water accumulation and corrosion of the cabinet. When the inside of the communication cabinet is opened and closed, the dust is easy to run into the inside of the communication cabinet, and the dust in the communication cabinet is not easy to discharge, and it is easy to accumulate at the bottom of the communication cabinet, which affects the service life of the communication cabinet. Therefore, in view of the above problems, a communication cabinet with heat dissipation and dustproof function is proposed.

Contents of the invention

The object of the present invention is to provide a communication cabinet with heat dissipation and dustproof function in order to solve the above problems.

The present invention achieves the above object through the following technical solutions, a communication cabinet with heat dissipation and dustproof function, including support legs, cabinet body, heat dissipation device, ash accumulation device and ash discharge device;

The bottom end of the cabinet is fixedly connected with four supporting legs;

The heat dissipation device includes a top cover, a ventilation pipe, a heat dissipation fan, a side door, a safety lock, a fixed frame, a ventilation groove, a through hole, a wind deflector, a heat dissipation plate and a heat dissipation net. One end hinge of the cabinet body is connected to the side door. The top of the cabinet is fixedly connected to the top cover, the bottom of the top cover is provided with a ventilation pipe, the top of the ventilation pipe is equipped with a cooling fan, and a safety lock is installed on the side wall of the cabinet. The inside of the fixed frame is fixedly connected to the fixed frame, and the side wall of the fixed frame is provided with a through hole. A ventilation slot is provided, and the side wall of the ventilation slot is fixedly connected to the wind deflector;

The dust accumulating device includes an air intake slot, a first filter screen, a connecting frame, a spring, a second filter screen, a mounting frame, a micro motor, a transmission shaft, a cam, an arc block, a drawing plate and an ash accumulating tank. The top of the cabinet body is provided with an air intake slot, the inside of the air intake slot is fixedly connected to the first filter screen, the inner top of the cabinet body is fixedly connected to the connection frame, and the top end of the connection frame is fixedly connected to one end of the spring. The other end of the spring is fixedly connected to the top of the second filter screen, the bottom end of the second filter screen is elastically connected to the mounting frame, the bottom end of the second filter screen is fixedly connected to two arc blocks, and the mounting frame A micromotor is installed inside the micromotor, the output end of the micromotor is socketed on the transmission shaft, two cams are socketed on the transmission shaft, the bottom end of the connecting frame is slidably connected to the drawing plate, and the inside of the drawing plate There are ash traps;

The ash discharge device includes a fixed plate, an exhaust fan, a stepping motor, a first connecting rod, a rotating shaft, a second connecting rod, a slider, a limit groove, a push rod, a push plate, a chute and an ash discharge hole. The bottom end of the cabinet body is fixedly connected to the fixing plate, and a stepping motor is installed inside the fixing plate, and the output end of the stepping motor is sleeved with one end of the first connecting rod, and the other end of the first connecting rod passes through The rotating shaft is rotatably connected to the second connecting rod, and one end of the second connecting rod is rotatably connected to the slider through the rotating shaft. One end of the push rod is fixedly connected with the push plate, the two ends of the fixed plate are provided with chute, the bottom of the fixed plate is provided with an ash discharge hole, and the one end of the fixed plate is equipped with an exhaust fan.

Preferably, the limiting slot is opened at the inner top of the fixing plate, and one end of the sliding block is snapped into the limiting slot.

Preferably, the two cams correspond to the two arc blocks one by one, and the two cams are mated with the two arc blocks.

Preferably, the second filter screen is elastically connected between the connection frame and the installation frame through a spring.

Preferably, the centers of the ventilation pipe, the air intake slot and the connection frame are coaxial, and the inner diameter of the ventilation pipe is larger than the diameter of the air intake slot.

Preferably, both ends of the push plate are slidably connected to the slide grooves at both ends of the fixed plate, and the upper half of the push plate is inclined from bottom to top from inside to outside to form a guide slope.

Preferably, a pull handle is provided at one end of the pull plate, and the pull handle is attached to the outer ring side wall of the connecting frame.

Preferably, the air deflector is an arc-shaped plate, and the two ends of the air deflector are respectively fixedly connected to the inner wall of the cabinet and the bottom end of the through hole.

Preferably, the fixed frame is a rectangular frame, and a cooling net is fixedly connected between the fixed frame and the inside of the cabinet.

Preferably, the two ends of the top cover and the top of the cabinet are distributed in a triangle, and the two ends of the top cover are open structures.

The beneficial effects of the present invention are:

1. Turn on the cooling fan through the external switch. The cooling fan works and blows the wind into the air intake slot through the ventilation pipe. The dust in the air is filtered through the first filter in the air intake slot, and the wind passes through the connection frame. The second filter screen filters the dust a second time. The wind passes through the connection frame and enters the ventilation slot. The wind in the ventilation slot enters the interior of the fixed frame through the through hole in the side wall of the fixed frame. The heat is absorbed, and the heat dissipation plate transfers the heat to the heat dissipation net. The wind blows the heat dissipation net and the heat dissipation plate to dissipate heat. The wind passes through the through hole at the bottom of the fixed frame, and the heat is transferred to the outside of the cabinet through the exhaust fan, which facilitates the heat dissipation of the communication cabinet. and ventilation.

2. Turn on the micro motor through an external switch, the micro motor drives the transmission shaft to rotate, the transmission shaft drives the cam to rotate, and the cam rotates once to move the arc block and squeeze the arc block at the same time, the arc block squeezes the second filter, the second filter The net vibrates under the spring elastic connection at both ends, so as to shake off the dust on the second filter net, and the dust falls into the dust accumulation groove inside the drawing plate. By pulling the drawing plate, the drawing plate is pulled out, and the dust accumulation groove The dust inside is discharged, which is convenient for dust collection, avoids dust clogging the filter screen, and avoids affecting heat dissipation.

3. The dust inside the cabinet falls into the fixed plate, and the stepping motor is turned on through the external switch. The stepping motor works to drive the first connecting rod to rotate, and the other end of the first connecting rod drives the second connecting rod to rotate. The rod drives the slider to reciprocate in the limit slot, and the slider drives the push plate to reciprocate inside the fixed plate through the push plate, so as to push up the dust falling inside the fixed plate and discharge it through the ash discharge hole inside the fixed plate , to facilitate the discharge of dust inside the cabinet, easy to clean, and improve heat dissipation.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings on the premise of not paying creative efforts.

Fig. 1 is a schematic diagram of the overall structure of the present invention;

Fig. 2 is a partial enlarged view of place A of the present invention;

Fig. 3 is a schematic diagram of the position of the fixed plate, the first connecting rod, the second connecting rod, the slider, the limit groove and the push plate of the present invention;

Fig. 4 is the structural representation of push plate and push rod of the present invention;

In the figure: 1. Supporting legs, 2. Cabinet body, 3. Top cover, 4. Ventilation pipe, 5. Cooling fan, 6. Side door, 7. Safety lock, 8. Fixed frame, 9. Ventilation slot, 10. Ventilation Hole, 11, wind deflector, 12, cooling plate, 13, cooling net, 14, fixed plate, 1401, exhaust fan, 15, air intake groove, 16, first filter screen, 17, connecting frame, 18, spring , 19, the second filter screen, 20, mounting frame, 21, micro motor, 22, transmission shaft, 23, cam, 24, arc block, 25, pull-out plate, 26, dust accumulation tank, 27, stepper motor , 28, first connecting rod, 29, rotating shaft, 30, second connecting rod, 31, slider, 32, limit slot, 33, push rod, 34, push plate, 35, chute, 36, ash discharge hole .

Detailed ways

In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner" and "outer" are based on those shown in the accompanying drawings. Orientation or positional relationship is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

Please refer to Figures 1-4, a communication cabinet with heat dissipation and dustproof functions, including support legs 1 and cabinet body 2, as well as heat dissipation devices, dust accumulation devices and dust discharge devices;

The bottom end of the cabinet body 2 is fixedly connected with four supporting legs 1;

The heat dissipation device includes a top cover 3, a ventilation pipe 4, a heat dissipation fan 5, a side door 6, a safety lock 7, a fixed frame 8, a ventilation groove 9, a through hole 10, a wind guide plate 11, a heat dissipation plate 12 and a heat dissipation net 13. One end hinge of the cabinet body 2 is connected to the side door 6, the top of the cabinet body 2 is fixedly connected to the top cover 3, the bottom end of the top cover 3 is provided with a ventilation pipe 4, and a cooling fan is installed on the top of the ventilation pipe 4 5. A safety lock 7 is installed on the side wall of one end of the cabinet body 2, and the interior of the cabinet body 2 is fixedly connected to the fixed frame 8, and the side wall of the fixed frame 8 has a through hole 10, and the fixed frame 8 The interior is fixedly connected to the heat dissipation net 13, the center of the heat dissipation net 13 is fixedly connected to the heat dissipation plate 12, a ventilation slot 9 is arranged between the fixed frame 8 and the cabinet body 2, and the side wall of the ventilation slot 9 is fixedly connected to the air deflector 11. It is convenient for heat dissipation and ventilation of the communication cabinet;

Described dust accumulating device comprises air inlet groove 15, the first filter screen 16, connecting frame 17, spring 18, the second filter screen 19, mounting frame 20, micromotor 21, transmission shaft 22, cam 23, arc block 24, Pull-out plate 25 and ash accumulation groove 26, the top of described cabinet body 2 has air intake groove 15, the inside of described air intake groove 15 is fixedly connected with first filter screen 16, and the inner top of described cabinet body 2 is fixedly connected with Connection frame 17, the top of the connection frame 17 is fixedly connected to one end of the spring 18, the other end of the spring 18 is fixedly connected to the top of the second filter screen 19, and the bottom end of the second filter screen 19 is elastically connected by the spring 18 Mounting frame 20, the bottom end of described second filter screen 19 is fixedly connected with two arc-shaped blocks 24, the inside of described mounting frame 20 is equipped with micromotor 21, and the output end of described micromotor 21 is socketed transmission shaft 22, Two cams 23 are sleeved on the transmission shaft 22, and the bottom end of the connection frame 17 is slidably connected to the drawing plate 25. The inside of the drawing plate 25 is provided with a dust accumulation groove 26, which facilitates the collection of dust and avoids dust Block the filter to avoid affecting heat dissipation;

The ash discharge device includes a fixed plate 14, an exhaust fan 1401, a stepping motor 27, a first connecting rod 28, a rotating shaft 29, a second connecting rod 30, a slider 31, a limit groove 32, a push rod 33, and a push plate 34. The chute 35 and the ash discharge hole 36, the bottom end of the cabinet body 2 is fixedly connected to the fixed plate 14, the inside of the fixed plate 14 is equipped with a stepping motor 27, and the output end of the stepping motor 27 is socketed One end of the first connecting rod 28, the other end of the first connecting rod 28 is connected to the second connecting rod 30 through the rotating shaft 29, and one end of the second connecting rod 30 is connected to the slider 31 through the rotating shaft 29, the sliding The block 31 is slidably connected in the two limiting grooves 32, one end of the slider 31 is fixedly connected to the push rod 33, one end of the push rod 33 is fixedly connected to the push plate 34, and the side walls at both ends of the fixed plate 14 are opened. There is a chute 35, and the bottom end of the fixed plate 14 is provided with an ash discharge hole 36, and an exhaust fan 1401 is installed on the side wall of one end of the fixed plate 14, so as to facilitate the discharge of dust inside the cabinet body 2, facilitate cleaning, and improve heat dissipation ability.

The limiting groove 32 is opened on the inner top of the fixed plate 14, and one end of the connecting slider 31 is engaged in the limiting groove 32, the structure is more reasonable and easy to connect; the two cams 23 and the two arc blocks 24 One-to-one correspondence, and the two cams 23 are connected with the two arc-shaped blocks 24 to make the second filter screen 19 vibrate; the second filter screen 19 is elastically connected between the connection frame 17 and the mounting frame 20 through the spring 18 , the structure is more reasonable and easy to connect; the center of the ventilation pipe 4, the air inlet groove 15 and the connection frame 17 are coaxial, and the inner diameter of the ventilation pipe 4 is greater than the diameter of the air inlet groove 15, which is convenient for air to enter; the push plate 34 The two ends of the two ends are slidingly connected with the chute 35 at the two ends of the fixed plate 14, and the upper half of the push plate 34 is inclined from the bottom to the outside to form a guide slope, which is convenient for pushing up the dust; one end of the pull plate 25 A pull handle is provided, and the pull handle is attached to the outer ring side wall of the connecting frame 17, so as to facilitate pulling the pull plate 25; the wind deflector 11 is an arc-shaped plate, and the two ends of the wind deflector 11 are respectively fixed Connect the inner wall of the cabinet body 2 and the bottom end of the through hole 10 to guide the wind; the fixed frame 8 is a rectangular frame, and the fixed frame 8 is fixedly connected with the cooling net 13 inside the cabinet body 2 to facilitate heat dissipation and ventilation The two ends of the top cover 3 and the top of the cabinet body 2 are distributed in a triangle, and the two ends of the top cover 3 are open structures to avoid rainwater accumulation and affect the adaptation of the communication cabinet.

When the present invention is in use, at first the electrical components in the device are all externally connected to the control switch and power supply, the safety lock 7 is opened, the side door 6 is opened, and then the electrical components to be installed are installed on the cooling plate 12, the side door 6 is closed, and the The external switch turns on the heat dissipation fan 5, and the heat dissipation fan 5 works to blow the wind into the air intake slot 15 through the ventilation pipe 4, and filter the dust in the air once through the first filter screen 16 in the air intake slot 15, and the wind passes through the connection The second filter screen 19 inside the frame 17 performs secondary filtration of dust, the wind passes through the connection frame 17 and enters the ventilation slot 9, and the wind in the ventilation slot 9 enters the interior of the fixed frame 8 through the through hole 10 inside the side wall of the fixed frame 8 The heat generated by the electrical components is absorbed through the heat dissipation plate 12, the heat dissipation plate 12 transfers the heat to the heat dissipation net 13, and the wind blows and dissipates heat to the heat dissipation net 13 and the heat dissipation plate 12, and the wind passes through the through hole at the bottom of the fixed frame 8 10. The heat is transferred to the outside of the cabinet 2 through the exhaust fan 1401, which is convenient for the heat dissipation of the communication cabinet. The dust is left on the second filter screen 19, and the micro motor 21 is turned on through the external switch. The micro motor 21 drives the transmission shaft 22 to rotate, and the transmission The shaft 22 drives the cam 23 to rotate, and the cam 23 rotates once to move the arc block 24 and squeeze the arc block 24 at the same time, the arc block 24 squeezes the second filter screen 19, and the second filter screen 19 is elastically connected by the springs 18 at both ends Vibration is generated to shake off the dust on the second filter screen 19, and the dust falls into the ash deposit tank 26 inside the drawer plate 25. By pulling the drawer plate 25, the drawer plate 25 is extracted, and the dust deposit tank 26 The dust is discharged to facilitate the collection of dust, avoid the dust from clogging the filter screen, and avoid affecting the heat dissipation. The dust inside the cabinet 2 falls into the fixed plate 14, and the stepping motor 27 is turned on through the external switch, and the stepping motor 27 works to drive the first continuous The rod 28 rotates, the other end of the first connecting rod 28 drives the second connecting rod 30 to rotate, the second connecting rod 30 drives the slider 31 to reciprocate in the limit groove 32, and the slider 31 drives the pushing plate 34 through the pushing plate 34 Do reciprocating motion inside the fixed plate 14, thereby pushing up the dust falling on the fixed plate 14, and discharge through the ash discharge hole 36 inside the fixed plate 14, so as to facilitate the discharge of dust inside the cabinet body 2, facilitate cleaning, and improve heat dissipation.

The exhaust fan 1401 adopts the industrial cabinet cooling fan of the model DHBFG and its related supporting power supply and circuit sold in the Aoyue specialty store of Delixi Electric.

Cooling fan 5 adopts the industrial cabinet cooling fan of model DHBFG sold in Delixi Electric Aoyue store and its related supporting power supply and circuit.

What micro-motor 21 adopted is the 30W miniature speed-adjusting motor of model XD-3420-2 and its related supporting power supply and circuit sold in Cinda Electric Factory Store.

The stepper motor 27 adopts the 42 stepper motor kit of model 42BYGH34 sold in the risym flagship store and its related supporting power supply and circuit.

The circuits, electronic components and modules involved are all existing technologies, and those skilled in the art can fully implement them. Needless to say, the protected content of the present invention does not involve the improvement of software and methods.

It will be apparent to those skilled in the art that the invention is not limited to the details of the above-described exemplary embodiments, but that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Accordingly, the embodiments should be regarded in all points of view as exemplary and not restrictive, the scope of the invention being defined by the appended claims rather than the foregoing description, and it is therefore intended that the scope of the invention be defined by the appended claims rather than by the foregoing description. All changes within the meaning and scope of the same elements are included in the present invention. Any reference sign in a claim should not be construed as limiting the claim concerned.

As mentioned above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still understand the foregoing The technical solutions recorded in each embodiment are modified, or some of the technical features are replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (9)

1. Communication cabinet with dustproof function of heat dissipation, its characterized in that: comprises supporting legs (1), a cabinet body (2), a heat radiating device, an ash depositing device and an ash discharging device;

the bottom end of the cabinet body (2) is fixedly connected with four supporting legs (1);

the heat dissipation device comprises a top cover (3), a ventilation pipe (4), a heat dissipation fan (5), a side door (6), a safety lock (7), a fixed frame (8), a ventilation groove (9), a through hole (10), an air deflector (11), a heat dissipation plate (12) and a heat dissipation net (13), wherein one end of a cabinet body (2) is hinged with the side door (6), the top end of the cabinet body (2) is fixedly connected with the top cover (3), the ventilation pipe (4) is arranged at the bottom end of the top cover (3), the heat dissipation fan (5) is arranged at the top of the ventilation pipe (4), the safety lock (7) is arranged on one end side wall of the cabinet body (2), the fixed frame (8) is fixedly connected with the inside of the cabinet body (2), the through hole (10) is formed in the side wall of the fixed frame (8), the heat dissipation net (13) is fixedly connected with the inside of the fixed frame (8), the heat dissipation plate (12) is fixedly connected with the center of the heat dissipation net (13), the ventilation groove (9) is arranged between the fixed frame (8) and the cabinet body (2), and the side wall of the air deflector (9) is fixedly connected with the air deflector (11).

The ash deposition device comprises an air inlet groove (15), a first filter screen (16), a connecting frame (17), a spring (18), a second filter screen (19), a mounting frame (20), a micro motor (21), a transmission shaft (22), a cam (23), arc blocks (24), a drawing plate (25) and an ash deposition groove (26), wherein the air inlet groove (15) is formed in the top of the cabinet body (2), the first filter screen (16) is fixedly connected to the inner top of the cabinet body (2), the connecting frame (17) is fixedly connected to the top of the connecting frame (17), one end of the first spring is fixedly connected to the top of the first filter screen (17), the other end of the first spring is fixedly connected to the top of the second filter screen (19), the bottom of the second filter screen (19) is elastically connected with the mounting frame (20) through the second spring, the bottom of the second filter screen (19) is fixedly connected with two arc blocks (24), the micro motor (21) is mounted in the inner part of the mounting frame (20), the output end of the micro motor (21) is sleeved with the transmission shaft (22), the transmission shaft (22) is sleeved with the two cams (23) in a sleeved mode, two arc blocks (23) are correspondingly matched with the two arc blocks (23), the bottom end of the connecting frame (17) is connected with a drawing plate (25) in a sliding manner, and an ash accumulation groove (26) is formed in the drawing plate (25);

the ash discharging device comprises a fixed plate (14), an exhaust fan (1401), a stepping motor (27), a first connecting rod (28), a rotating shaft (29), a second connecting rod (30), a sliding block (31), a limiting groove (32), a push rod (33), a push plate (34), a sliding groove (35) and an ash discharging hole (36), wherein the bottom end of the cabinet body (2) is fixedly connected with the fixed plate (14), the stepping motor (27) is arranged in the fixed plate (14), the output end of the stepping motor (27) is sleeved with one end of the first connecting rod (28), the other end of the first connecting rod (28) is connected with the second connecting rod (30) through the rotation of the first rotating shaft, one end of the second connecting rod (30) is connected with the sliding block (31) through the rotation of the second rotating shaft, one end of the sliding block (31) is fixedly connected with the push rod (33), one end of the push rod (33) is fixedly connected with the push plate (34), sliding grooves (35) are formed in the side walls at two ends of the fixed plate (14), two side walls of the fixed plate (14) are provided with the bottom end of the fixed plate (14), and two exhaust fans (1401) are arranged on the side walls of the exhaust fan (14).

2. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: the limiting groove (32) is formed in the top end of the inner portion of the fixing plate (14), and one end of the sliding block (31) is connected in the limiting groove (32) in a clamping mode.

3. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: the second filter screen (19) is elastically connected between the connecting frame (17) and the mounting frame (20) through the first spring and the second spring.

4. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: the centers of the ventilation pipe (4), the air inlet groove (15) and the connecting frame (17) are coaxial, and the inner diameter of the ventilation pipe (4) is larger than the diameter of the air inlet groove (15).

5. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: the two ends of the push plate (34) are in sliding connection with sliding grooves (35) at the two ends of the fixed plate (14), and the upper half part of the push plate (34) is inclined from bottom to top to form a guide inclined plane.

6. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: one end of the drawing plate (25) is provided with a drawing handle, and the drawing handle is attached to the outer ring side wall of the connecting frame (17).

7. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: the air deflector (11) is an arc-shaped plate, and two ends of the air deflector (11) are respectively and fixedly connected with the inner wall of the cabinet body (2) and the bottom end of the through hole (10).

8. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein:

the fixed frame (8) is a rectangular frame, and a heat dissipation net (13) is fixedly connected between the fixed frame (8) and the inside of the cabinet body (2).

9. The communication cabinet with heat dissipation and dust prevention functions according to claim 1, wherein: the two ends of the top cover (3) and the top end of the cabinet body (2) are distributed in a triangular shape, and the two ends of the top cover (3) are of an opening structure.

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