CN215647935U - Outdoor control cubicle is with ventilation dust keeper and control cubicle that converges - Google Patents

Abstract

The utility model discloses a ventilation dustproof device for an outdoor control cubicle and a control cubicle, which comprise an air inlet device bottom plate and a fan detachably connected to one side of the air inlet device bottom plate, wherein the fan is positioned on a first ventilation hole formed in the air inlet device bottom plate, the air inlet device bottom plate is used for being connected to the outer wall of the control cubicle, the other side of the air inlet device bottom plate is detachably connected with a high-efficiency filter screen pressing plate, an HEPA high-efficiency filter screen is placed between the high-efficiency filter screen pressing plate and the air inlet device bottom plate, and a plurality of second ventilation holes are formed in the high-efficiency filter screen pressing plate; the efficient filter screen pressing plate is detachably connected with a filter cotton pressing plate, primary filter cotton is placed between the filter cotton pressing plate and the efficient filter screen pressing plate, and a third ventilation hole is formed in the filter cotton pressing plate. This device is than ordinary ventilation filter screen group dustproof effectual. Adopt the inspiratory mode of air intake to form the pressure-fired in the cabinet, can improve the dustproof effect of the cabinet body.

Description

Outdoor control cubicle is with ventilation dust keeper and control cubicle that converges

Technical Field

The utility model belongs to the technical field of control cubicles, and particularly belongs to a ventilation and dust prevention device for an outdoor control cubicle and the control cubicle.

Background

The outdoor control cabinet is arranged outdoors, and needs to face the influence of various environmental factors such as wind sand, dust, rainwater and the like. Meanwhile, electronic measurement and control devices in the cabinet can only reliably operate under relatively stable temperature and humidity and high cleanliness. In the northwest areas with large wind sand and dust, in order to improve the protection level of the outdoor control cubicle, the cabinet body is not provided with wind heat dissipation holes, and the temperature and humidity in the cubicle are controlled by an air conditioner. This, while achieving a higher level of protection, is costly to configure and operate. Most of common ventilating filter screen sets adopt dustproof cotton with large porosity, which cannot meet the requirement of dust density, and filter cotton needs to be replaced regularly.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides a ventilation and dust prevention device for an outdoor control cubicle and the control cubicle, and solves the problems that dustproof cotton in ventilation and heat dissipation is large in pore size and poor in dustproof effect at present.

In order to achieve the purpose, the utility model provides the following technical scheme: a ventilation dustproof device for an outdoor convergence control cabinet comprises an air inlet device bottom plate and a fan detachably connected to one side of the air inlet device bottom plate, wherein the fan is positioned on a first ventilation hole formed in the air inlet device bottom plate, the air inlet device bottom plate is used for being connected to the outer wall of the convergence control cabinet, the other side of the air inlet device bottom plate is detachably connected with a high-efficiency filter screen pressing plate, an HEPA high-efficiency filter screen is placed between the high-efficiency filter screen pressing plate and the air inlet device bottom plate, and a plurality of second ventilation holes are formed in the high-efficiency filter screen pressing plate;

the efficient filter screen pressing plate is detachably connected with a filter cotton pressing plate, primary filter cotton is placed between the filter cotton pressing plate and the efficient filter screen pressing plate, and a third ventilation hole is formed in the filter cotton pressing plate.

The inner wall of the rain cover is of an opening structure, the top edge of the rain cover is in a shape of Chinese character 'ren', the bottom edge of the rain cover is of an inclined edge structure, and the height of the outer wall of the bottom edge of the rain cover is higher than that of the inner wall of the bottom edge of the rain cover;

the side of rain-proof cover is equipped with first bolt fastening hole, first bolt fastening hole is used for with the first blind hole rivet nut on the air intake device bottom plate and is connected.

Further, when the air inlet device bottom plate is connected with the rain cover, the air inlet device bottom plate is located in an inner cavity of the rain cover, the top edge of the air inlet device bottom plate is an inclined edge, the inclination angle of the top edge of the air inlet device bottom plate is the same as the inclination angle of the top of the herringbone shape of the rain cover, the air inlet device bottom plate is located in the inner cavity of the rain cover, and the bottom edge of the air inlet device bottom plate is close to the bottom edge of the rain cover but is not in contact with the bottom edge of the rain cover.

The air outlet device is characterized by further comprising an air outlet device bottom plate, wherein the air outlet device bottom plate is of a cuboid structure with an opening at the top, a plurality of fourth ventilation holes are formed in the side wall of the air outlet device bottom plate, an air outlet hole is formed in the bottom wall surface of the air outlet device bottom plate in a penetrating mode, and a one-way valve is connected to the air outlet hole;

the top of the bottom plate of the air outlet device is detachably connected with an upper cover plate, the bottom of the upper cover plate is of an opening structure, and the side wall of the upper cover plate is of an inclined structure;

when the upper cover plate is connected to the bottom plate of the air outlet device, the linear distance between the bottom edge of the upper cover plate and the side wall of the bottom plate of the air outlet device is larger than the linear distance between the top edge of the upper cover plate and the side wall of the bottom plate of the air outlet device.

Furthermore, a second bolt fixing hole for connecting a fan is formed in the bottom plate of the air inlet device, and a second blind hole rivet nut for connecting the control cubicle is further formed in the bottom plate of the air inlet device;

and an air inlet sealing gasket is arranged between the fan and the bottom plate of the air inlet device.

Furthermore, a stud is welded on the bottom plate of the air inlet device, a rectangular hole is also integrated on the bottom plate of the air inlet device, and the rectangular hole is vertical to the bottom plate of the air inlet device;

the efficient filter screen pressing plate is provided with a stud fixing hole for penetrating a stud, and the bottom of the efficient filter screen pressing plate is integrally formed with a convex body for penetrating a rectangular hole.

Furthermore, the efficient filter screen pressing plate is also provided with a plurality of wedge-shaped holes and threaded holes, hooks for extending into the wedge-shaped holes are arranged on the side edge of the filter cotton pressing plate, and third bolt fixing holes for connecting the threaded holes are also formed in the filter cotton pressing plate;

the side edge of the high-efficiency filter screen pressing plate is integrally formed with a reinforcing flange, and the reinforcing flange is perpendicular to the high-efficiency filter screen pressing plate.

Further, the fan is a bidirectional rotating fan, the bidirectional rotating fan is connected with a controller, and the controller is used for controlling the steering of the bidirectional rotating fan.

The utility model also provides a control cabinet, which adopts the ventilation and dust prevention device for the outdoor control cabinet, and comprises a cabinet body, wherein two air ports are arranged on the side wall of the cabinet body, the two air ports are both connected with an air inlet device bottom plate, the two air ports are respectively a first air port and a second air port, the first air port is arranged close to the top of the cabinet body, the second air port is arranged close to the bottom of the cabinet body, and the two fans are both bidirectional rotating fans.

The air outlet device further comprises an air outlet device bottom plate, a plurality of fourth ventilation holes are formed in the side wall of the air outlet device bottom plate, an air outlet hole is formed in the bottom wall surface of the air outlet device bottom plate in a penetrating mode, and a one-way valve is connected to the air outlet hole;

the top wall of the cabinet body is provided with an exhaust port in a penetrating way, and the bottom plate of the air outlet device is connected to the exhaust port.

Compared with the prior art, the utility model has at least the following beneficial effects:

the utility model provides a ventilation dustproof device for an outdoor control cubicle, which is characterized in that a fan is connected to a bottom plate of an air inlet device to provide basic power for airflow flowing, a high-efficiency filter screen pressing plate is connected to the bottom plate of the air inlet device, an HEPA high-efficiency filter screen is arranged between the high-efficiency filter screen pressing plate and the bottom plate of the air inlet device, a filter cotton pressing plate is connected to the high-efficiency filter screen pressing plate, primary filter cotton is arranged between the filter cotton pressing plate and the high-efficiency filter screen pressing plate, clean air filtered by the primary filter cotton and the HEPA high-efficiency filter screen is sucked by the fan, and a micro-positive pressure environment is formed in the cubicle to prevent dust from entering a cubicle body. HEPA high efficiency filter screen and the cooperation of just imitating the filter pulp use, have improved the filter capacity to the tiny dust of tiny particle, and this application is more dustproof effectual than ordinary ventilation filter screen group. Adopt the inspiratory mode of air intake to form the pressure-fired in the cabinet, can improve the dustproof effect of the cabinet body.

Furthermore, the air inlet device bottom plate is also connected with a rain cover which can prevent rain and sand.

Further, be close to but contactless between the base of hot blast blowpipe apparatus bottom plate and the rain-proof cover bottom plate, can form "S" type air inlet structure, can block the rainwater from the lower part splash-in, can also block the great sand grain of granule and get into, the lower surface of slope still helps the dust discharge that blows down when the blowback removes dust simultaneously, makes this device improve waterproof, sand prevention ability, dust exhaust function in addition simultaneously.

Further, the check valve of air-out device bottom plate can make the air inlet fan breathe in and the exhaust integrated configuration of check valve the pressure-fired environment that forms in the cabinet, can prevent that the dust from getting into from other gaps of the cabinet body, promotes the check valve of exhaust port department and opens when atmospheric pressure in the cabinet is a little higher than ambient pressure, outside inside air discharge cabinet, takes away the heat and reaches radiating purpose.

Furthermore, the air inlet device bottom plate and the fan are detachably connected through bolts, the air inlet device and the convergence control cabinet are detachably connected through bolts, disassembly, assembly and maintenance are facilitated, and the air inlet sealing gasket arranged between the fan and the air inlet device bottom plate can strengthen sealing between the fan and the air inlet device bottom plate.

Furthermore, the stud welded on the bottom plate of the air inlet device can be matched with a stud fixing hole in the high-efficiency filter screen pressing plate, and the convex body in the high-efficiency filter screen pressing plate can be inserted into the rectangular hole in the bottom plate of the air inlet device, so that the mounting and dismounting convenience is improved, the number of bolts and screws is reduced, and the cost is reduced.

Furthermore, the efficient filter screen pressing plate is also provided with a plurality of wedge-shaped holes and threaded holes which can be matched with hooks and third bolt fixing holes of the filter cotton pressing plate, so that the number of screws and bolts is reduced, the cost is reduced, and the convenience of disassembly and assembly is improved;

simultaneously, the intensity of high-efficient filter screen clamp plate can be strengthened to the enhancement turn-ups of high-efficient filter screen clamp plate.

Further, the fan is two-way rotatory fan, and after operation certain time, the control fan reversal will adsorb the dust on the filter screen surface and blow off, plays automatically cleaning, extension filter screen change time's effect to make this device can regularly blow back the adsorbed dust on the automatically cleaning filter screen, prolonged the change time of HEPA high efficiency filter screen and primary filter cotton.

The utility model also provides a control cabinet, wherein the fans are arranged at the positions of one higher position and one lower position on two sides of the cabinet body, one fan sucks air and the other fan exhausts air, and the fans are exchanged after a period of time, so that dust adsorbed on the filter screen during air suction can be blown off during air exhaust. Therefore, the dust adsorption quantity on the filter screen can be obviously reduced, and the service life of the filter screen is prolonged.

Furthermore, air sucked by the fan raises the air pressure in the cabinet, the one-way exhaust valve is pushed to be opened, and the air is exhausted out of the cabinet to take away heat in the cabinet. The slight positive pressure in the cabinet can prevent dust from entering from other gaps of the cabinet body. When the heat dissipation requirement is slow, the controller controls the two fans to alternately operate or stop according to the temperature in the cabinet. When the air conditioner runs for a certain time, the controller controls one fan to suck air and the other fan to reversely exhaust air, and the high-efficiency filter screen and the primary filter cotton outside the reverse fan are subjected to back flushing cleaning. After the filter screen of one side is accomplished cleanly, two fans all reverse operation, the filter screen of clean other one side. The back flushing cleaning can prolong the service life of the primary filter cotton and the HEPA high-efficiency filter screen and reduce the replacement times.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is an exploded view of the air intake device;

FIG. 3 is a schematic diagram of an explosion structure of the air outlet device;

FIG. 4 is a schematic view of a bottom plate of the intake device;

FIG. 5 is a schematic structural view of a high-efficiency filter screen pressing plate;

FIG. 6 is a schematic structural view of a cotton filter press plate;

fig. 7 is a schematic structural view of the rain cover;

FIG. 8 is a schematic view of a bottom plate of the air outlet device;

FIG. 9 is a schematic structural view of the upper shield plate;

FIG. 10 is a schematic view of the fixing process of the primary filter cotton;

FIG. 11 is a schematic view of a fixing process of the HEPA high efficiency filter screen;

fig. 12 is a schematic view of a fixing process of the rain cover;

FIG. 13 is a schematic view of the installation process of the air inlet device on the control cubicle;

FIG. 14 is a schematic view illustrating the flow direction of the air inside the air outlet device;

FIG. 15 is a schematic view of the mounting of the air inlet device and the air outlet device on the control cubicle;

FIG. 16 is a schematic view of the air inlet device mounted on the control cubicle;

in the drawings: 1-a controller, 2-a control line, 3-an air inlet device, 30-a fan, 31-an air inlet sealing gasket, 32-an air inlet device bottom plate, 3201-a stud, 3202-an air inlet device bottom plate top edge, 3203-an air inlet device bottom plate side edge, 3204-a second blind hole rivet nut, 3205-a second bolt fixing hole, 3206-a first vent hole, 3207-a boss, 3208-an air inlet device bottom plate bottom edge, 3209-a first blind hole rivet nut, 3210-a rectangular hole, 33-a first filter screen sealing gasket, 34-a HEPA high efficiency filter screen, 35-a second filter screen sealing gasket, 36-a high efficiency filter screen pressing plate, 3601-a threaded hole, 3602-a stud fixing hole, 3603-a reinforced flanging, 3604-a wedge-shaped hole and 3605-a second vent hole, 3606-convex body, 37-primary filter cotton, 38-filter cotton pressing plate, 3801-third bolt fixing hole, 3802-hook, 3803-third ventilation hole, 39-rain cover, 3901-top edge of the rain cover, 3902-first bolt fixing hole, 3903-bottom edge of the rain cover, 4-air outlet device, 40-upper cover plate, 4001-third blind hole rivet nut, 4002-side wall of the upper cover plate, 41-one-way valve, 42-bottom plate of the air outlet device, 4201-fourth ventilation hole, 4202-fourth blind hole rivet nut, 4203-fifth blind hole rivet nut, 4204-air outlet hole and 43-air outlet sealing gasket.

Detailed Description

The utility model is further described with reference to the following figures and detailed description.

The utility model provides a ventilation and dust prevention device for an outdoor control cubicle, which is characterized in that a controller controls a fan 30 to suck clean air filtered by primary filter cotton 37 and an HEPA high-efficiency filter screen 34, and a micro-positive pressure environment is formed in the cubicle to prevent dust from entering a cubicle body. When the air pressure in the cabinet is slightly higher than the ambient air pressure, the one-way valve 41 at the air outlet is pushed to be opened, and the internal air is exhausted out of the cabinet to take away heat so as to achieve the purpose of heat dissipation. After the filter screen runs for a certain time, the controller 1 controls the fan 30 to rotate reversely to blow off dust adsorbed on the surface of the filter screen, so that the effects of self-cleaning and prolonging the replacement time of the filter screen are achieved.

As shown in fig. 1, in the present embodiment, the ventilation and dust prevention device includes three parts, namely an air inlet device 3, an air outlet device 4 and a controller 1, wherein the air inlet device 3 is connected with the controller 1 through a control line 2;

as shown in fig. 2, in this embodiment, the air intake device 3 includes, from inside to outside, a fan 30, an air intake gasket 31, an air intake device bottom plate 32, a first filter screen gasket 33, a HEPA high efficiency filter screen 34, a second filter screen gasket 35, a high efficiency filter screen pressure plate 36, a primary filter cotton 37, a filter cotton pressure plate 38, and a rain cover 39 in sequence, where the fan 30 in the air intake device 3 is a bidirectional rotary fan and is controlled by a controller, and can suck air into the inside cabinet or blow air out. The air inlet gasket 31 is used for sealing between the cabinet mounting hole and the air inlet device 3, in this embodiment, the air inlet gasket 31 is disposed between the blower 30 and the air inlet device bottom plate 32, and the blower 30 and the air inlet device bottom plate 32 are in compression joint with the air inlet gasket 31. The intake device floor 32 is used to carry and secure other components within the intake device 3. The first screen gasket 33 and the second screen gasket 35 are used for front and rear sealing of the HEPA high efficiency screen 34. HEPA high efficiency filter screen 34 is the main filter, can filter the particulate matter of diameter more than 0.3 micron. The high efficiency screen hold down 36 is used to cooperate with the air intake assembly base plate 32 to secure the HEPA high efficiency screen 34 and ensure airflow therethrough. The primary filter cotton 37 has larger pores for filtering larger diameter particles and fibers. The filter cotton pressing plate 38 is used for matching with the high-efficiency filter screen pressing plate 36 to fix the primary filter cotton 37 and ensure that the air flow passes through. The rain cover 39 is used for rain and sand prevention.

Specifically, as shown in fig. 4, the intake device bottom plate 32 is provided with: a boss 3207 for mounting the fan 30; a first vent 3206 for airflow in and out; a second bolt fixing hole 3205 for fixing the fan 30; a second blind rivet nut 3204 for connecting with the cabinet body mounting hole; the two sides are used for guiding water to flow downwards to the side 3203 of the bottom plate of the air inlet device, wherein the side 3203 of the bottom plate of the air inlet device is a flanging; the top of the air inlet device bottom plate 32 is an air inlet device bottom plate top edge 3202, the air inlet device bottom plate top edge 3202 is used for a rain cover top edge 3901 matched with the rain cover 39, in the embodiment, the air inlet device bottom plate top edge 3202 is a bevel edge, the inclination angle of the air inlet device bottom plate top edge 3202 is the same as the inclination angle of the herringbone top of the rain cover 39, and meanwhile, the rain cover has a rain-proof effect; the air inlet device bottom plate 32 is also welded with a stud 3201 for fixing the high-efficiency filter screen pressing plate 36; the air inlet device bottom plate 32 is also provided with a rectangular hole 3210, the rectangular hole 3210 is perpendicular to the air inlet device bottom plate 32, and the rectangular hole 3210 is used for inserting the convex body 3606 of the high-efficiency filter screen pressing plate 36; a first blind hole rivet nut 3209 for fixing the rain cover 39 is further arranged on the air inlet device bottom plate 32; the bottom plate 32 of the air inlet device is also provided with a bottom edge 3208 of the bottom plate of the air inlet device for retaining water and preventing sand, the bottom edge 3208 of the bottom plate of the air inlet device is a flanging, and the bottom edge 3208 of the bottom plate of the air inlet device is an inclined structure.

Specifically, as shown in fig. 5, the efficient filter screen pressing plate 36 is provided with a plurality of second ventilation holes 3605, in this embodiment, the second ventilation holes 3605 are strip-shaped ventilation holes; the high-efficiency filter screen pressing plate 36 is also provided with a wedge-shaped hole 3604 matched with the filter cotton pressing plate 38; the periphery of the high-efficiency filter screen pressing plate 36 is provided with a reinforcing flange 3603; the efficient filter screen pressing plate 36 is provided with stud fixing holes 3602, studs 3201 of the air inlet device bottom plate 32 extend into the stud fixing holes 3602, and the efficient filter screen pressing plate 36 is hung on the air inlet device bottom plate 32, wherein the stud fixing holes 3602 are strip-shaped fixing holes; the high-efficiency filter screen pressing plate 36 is also provided with a threaded hole 3601 for fixing the filter cotton pressing plate 38; the bottom integration of high-efficient filter screen clamp plate 36 is equipped with convex body 3606, when high-efficient filter screen clamp plate 36 is installed on air intake device bottom plate 32, convex body 3606 stretches into in air intake device bottom plate 32's rectangular hole 3210, HEPA high-efficient filter screen 34 is pressed between high-efficient filter screen clamp plate 36 and air intake device bottom plate 32, preferably, the sealed pad 33 of first filter screen has been arranged between HEPA high-efficient filter screen 34 and the air intake device bottom plate 32, the sealed pad 35 of second filter screen has been arranged between HEPA high-efficient filter screen 34 and the high-efficient filter screen clamp plate 36.

Specifically, as shown in fig. 6, the cotton filter pressing plate 38 is provided with a third ventilation hole 3803, and the third ventilation hole 3803 is used for airflow flowing; the side edge of the filter cotton pressing plate 38 is also integrally formed with a hook 3802, and the hook 3802 is used for extending into the wedge-shaped hole 3604 of the high-efficiency filter screen pressing plate 36; the filter cotton pressure plate 38 is also provided with a third bolt fixing hole 3801, and the filter cotton pressure plate 38 is aligned with the threaded hole 3601 of the high-efficiency filter screen pressure plate 36 through the third bolt fixing hole 3801 and then connected through a screw or a bolt.

Specifically, as shown in fig. 7, the rain cover 39 is provided with a rain cover top edge 3901 used for being matched with the air inlet device bottom plate top edge 3202, in this embodiment, the inner wall of the rain cover 39 is of an open structure, the rain cover top edge 3901 is herringbone, the rain cover bottom edge 3903 is of a bevel edge structure, the outer wall height of the rain cover bottom edge 3903 is higher than the inner wall height of the rain cover bottom edge 3903, and the rain cover bottom edge 3903 is a flanging used for water retaining and sand preventing; rain-proof cover 39 is last still to be equipped with and to be used for with the first blind hole riveting nut 3209 complex first bolt fixed orifices 3902 of air intake device bottom plate 32, and first bolt fixed orifices 3902 is the bar fixed orifices.

In this embodiment, as shown in fig. 3, the outlet gasket 43 of the outlet device 4 is used for sealing between the outlet device 4 and the cabinet mounting hole. The outlet device base plate 42 is used to carry and hold other components of the outlet device 4 and to ensure airflow therethrough. The one-way valve 41 is used for one-way exhaust to the outside of the cabinet. The upper cover plate 40 serves to protect the check valve 41.

Specifically, as shown in fig. 8, a fourth ventilation hole 4201 is formed on the air outlet device bottom plate 42, and the fourth ventilation hole 4201 is a strip-shaped ventilation hole; a fourth blind rivet nut 4202 used for being matched with the upper cover plate 40 is further arranged on the air outlet device bottom plate 42; a fifth blind hole riveting nut 4203 used for being matched with the cabinet body mounting hole is further arranged on the air outlet device bottom plate 42; an air outlet 4204 is formed on the bottom wall surface of the air outlet device bottom plate 42 in a penetrating manner, and the one-way valve 41 is connected to the air outlet 4204.

Specifically, as shown in fig. 9, the upper cover plate 40 is provided with an upper cover plate sidewall 4002 inclined downward from the periphery, the upper cover plate sidewall 4002 is a flanged edge, and when the upper cover plate 40 is connected to the air outlet device bottom plate 42, a linear distance between a bottom edge of the upper cover plate 40 and a sidewall of the air outlet device bottom plate 42 is greater than a linear distance between a top edge of the upper cover plate 40 and a sidewall of the air outlet device bottom plate 42, so that air flow in the cabinet is conveniently discharged; the upper housing plate 40 is further provided with a third blind rivet nut 4001 for cooperating with a fourth blind rivet nut 4202 of the air outlet device bottom plate 42.

In this embodiment, the fixing process of the primary filter cotton 37 is shown in fig. 10. The primary filter cotton 37 is clamped through the matching of the hooks 3802 of the filter cotton pressing plate 38 and the wedge-shaped holes 3604 on the efficient filter screen pressing plate 36 and the matching of the third bolt fixing holes 3801 on the filter cotton pressing plate 38 and the threaded holes 3601 on the efficient filter screen pressing plate 36. The use of the hook 3802 can reduce the use amount of screws, and the primary filter cotton 37 is convenient to replace.

In this embodiment, as shown in fig. 11, the HEPA high efficiency filter 34 is fixed. Through the cooperation of the convex body 3606 on the high-efficiency filter screen pressing plate 36 and the rectangular hole 3210 on the air inlet device bottom plate 32, the strip-shaped stud fixing hole on the high-efficiency filter screen pressing plate 36 is matched with the stud 3201 on the air inlet device bottom plate 32, so that the HEPA high-efficiency filter screen 34 is clamped. The convex body 3606 is matched with the rectangular hole 3210, so that the using amount of screws is reduced, and the HEPA high-efficiency filter screen 34 is convenient to replace.

In this embodiment, as shown in fig. 12, a fixing manner of the rain cover 39 is provided. Through the cooperation of rain-proof cover topside 3901 on the rain-proof cover 39 and the air intake device bottom plate topside 3202 on the air intake device bottom plate 32, through the cooperation of the first bolt fixed orifices of bar on the rain-proof cover 39 and the first blind hole riveting nut 3209 on the air intake device bottom plate 32, fix rain-proof cover 39. Rain-proof cover 39 upper portion comes the cooperation through the turn-ups of slope and firstly can play the purpose that reduces the convenient assembly of screw, secondly plays the drainage effect, prevents that the rainwater from piling up at the top.

In this embodiment, as shown in fig. 13, the air intake device 3 is mounted on the outer wall of the cabinet body and is fixed by a bolt in cooperation with a second blind rivet nut 3204 on the bottom plate 32 of the air intake device. Rain-proof cover bottom edge 3903, air intake device bottom plate bottom edge 3208 and cabinet wall form an "S" type intake duct in air intake device 3 bottom, can block rainwater from the lower part splash into, can also block the great sand grain of granule to get into, and the lower surface of slope still helps the dust discharge that blows off when the blowback removes dust simultaneously. The air flow direction of the air inlet device 3 during air suction is shown in fig. 13, and the reverse is performed during back blowing dust removal.

In this embodiment, as shown in fig. 14, the airflow inside the air outlet device 3 flows, and when the air pressure inside the cabinet is slightly higher than the air pressure outside the cabinet, the check valve is opened, and the air is exhausted from the cabinet to the outside of the cabinet through the check valve 41.

The working principle of the utility model is that the controller 1 controls the fan 30 to suck clean air filtered by the primary filter cotton 37 and the HEPA high-efficiency filter screen 34, and a micro-positive pressure environment is formed in the cabinet to prevent dust from entering the cabinet body from other gaps of the cabinet body. When the air pressure in the cabinet is slightly higher than the ambient air pressure, the one-way valve 41 at the air outlet is pushed to be opened, and the internal air is exhausted out of the cabinet to take away heat so as to achieve the purpose of heat dissipation. After the filter screen runs for a certain time, the controller controls the fan to rotate reversely to blow off dust adsorbed on the surface of the filter screen, and the effects of self-cleaning and prolonging the replacement time of the filter screen are achieved.

In another embodiment of the present invention, a control cubicle is proposed based on a ventilation and dust-proof device for an outdoor control cubicle, as shown in fig. 15, an air inlet device can be respectively arranged on two sides of the cubicle body, and the positions are one higher and one lower. An air outlet device 4 is arranged under the rain-proof cover at the top of the cabinet body. The controller 1 is installed in the cabinet and connected with the fan 30 through a cable. When the heat dissipation needs to be carried out quickly, the two fans 30 can work simultaneously to suck clean air filtered by the primary filter cotton 37 and the HEPA high-efficiency filter screen 34, the air pressure in the cabinet rises due to the sucked air, the one-way valve 41 in the air outlet device is pushed to be opened, and the heat in the cabinet is taken away outside the air exhaust cabinet. The slight positive pressure in the cabinet can prevent dust from entering from other gaps of the cabinet body. When the heat dissipation requirement is slow, the controller 1 controls the two fans 30 to alternately operate or stop according to the temperature in the cabinet. When the air conditioner runs for a certain time, the controller 1 controls one fan 30 to suck air, the other fan 30 reversely discharges air, and the high-efficiency filter screen and the primary filter cotton 37 outside the reverse fan 30 are reversely cleaned. After the filter screen of one side is accomplished cleanly, the equal reverse operation of two fans of controller control, the filter screen of clean other one side. The back flushing cleaning can prolong the service life of the primary filter cotton and the HEPA high-efficiency filter screen and reduce the replacement times.

In another embodiment of the present invention, as shown in fig. 16, two air inlet devices can be disposed on two sides of the cabinet, one high and one low, and the controller is installed in the cabinet and connected to the fan 30 through a cable. In operation, the controller 1 controls one fan 30 to draw air and the other fan 30 to discharge air. After a period of time, the controller 1 controls the two fans 30 to change the running direction. Thus, the dust collector can always suck air one by one and discharge air one by one, and the dust adsorbed on the filter screen during air suction can be blown off during air discharge. Therefore, the dust adsorption quantity on the filter screen can be obviously reduced, and the service life of the filter screen is prolonged.

Specifically, the start and stop of the two fans 30 can be realized by controlling the start and stop technology of the fans according to the temperature and humidity conditions in the prior art, and the turning time of the fans is directly realized by setting time.

Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The ventilation dustproof device for the outdoor convergence control cabinet is characterized by comprising an air inlet device bottom plate (32) and a fan (30) detachably connected to one side of the air inlet device bottom plate (32), wherein the fan (30) is positioned on a first ventilation hole (3206) formed in the air inlet device bottom plate (32), the air inlet device bottom plate (32) is used for being connected to the outer wall of the convergence control cabinet, the other side of the air inlet device bottom plate (32) is detachably connected with a high-efficiency filter screen pressing plate (36), a HEPA high-efficiency filter screen (34) is placed between the high-efficiency filter screen pressing plate (36) and the air inlet device bottom plate (32), and a plurality of second ventilation holes (3605) are formed in the high-efficiency filter screen pressing plate (36);

the efficient filter screen pressing plate (36) is also detachably connected with a filter cotton pressing plate (38), primary filter cotton (37) is placed between the filter cotton pressing plate (38) and the efficient filter screen pressing plate (36), and a third ventilation hole (3803) is formed in the filter cotton pressing plate (38).

2. The ventilation and dust prevention device for the outdoor control cubicle according to claim 1, further comprising a rain-proof cover (39), wherein the inner wall of the rain-proof cover (39) is of an open structure, the top edge (3901) of the rain-proof cover is of a herringbone shape, the bottom edge (3903) of the rain-proof cover is of a bevel edge structure, and the height of the outer wall of the bottom edge (3903) of the rain-proof cover is higher than the height of the inner wall of the bottom edge (3903) of the rain-proof cover;

the side of rain-proof cover (39) is equipped with first bolt fastening hole (3902), first bolt fastening hole (3902) be used for with air intake device bottom plate (32) on first blind hole rivet nut (3209) be connected.

3. The ventilation and dust prevention device for the outdoor control cubicle according to claim 2, wherein when the air intake device bottom plate (32) is connected to the rain cover (39), the air intake device bottom plate (32) is located in the inner cavity of the rain cover (39), the top edge (3202) of the air intake device bottom plate is a bevel edge, the inclination angle of the top edge (3202) of the air intake device bottom plate is the same as the inclination angle of the top of the herringbone shape of the rain cover (39), the air intake device bottom plate (32) is located in the inner cavity of the rain cover (39), and the bottom edge (3208) of the air intake device bottom plate is close to the bottom edge (3903) of the rain cover but is not in contact with the bottom edge (3903) of the rain cover.

4. The ventilation and dust prevention device for the outdoor control cubicle according to claim 1, further comprising an air outlet device bottom plate (42), wherein the air outlet device bottom plate (42) is of a cuboid structure with an open top, a plurality of fourth ventilation holes (4201) are formed in the side wall of the air outlet device bottom plate (42), an air outlet hole is formed in the bottom wall surface of the air outlet device bottom plate (42) in a penetrating manner, and a one-way valve (41) is connected to the air outlet hole;

the top of the air outlet device bottom plate (42) is detachably connected with an upper cover plate (40), the bottom of the upper cover plate (40) is of an open structure, and the side wall (4002) of the upper cover plate is of an inclined structure;

when the upper cover plate (40) is connected to the air outlet device bottom plate (42), the linear distance between the bottom edge of the upper cover plate (40) and the side wall of the air outlet device bottom plate (42) is larger than the linear distance between the top edge of the upper cover plate (40) and the side wall of the air outlet device bottom plate (42).

5. The ventilation and dust prevention device for the outdoor control cubicle according to claim 1, wherein a second bolt fixing hole (3205) for connecting a fan (30) is arranged on the air inlet device bottom plate (32), and a second blind rivet nut (3204) for connecting the control cubicle is further arranged on the air inlet device bottom plate (32);

an air inlet sealing gasket (31) is arranged between the fan (30) and the air inlet device bottom plate (32).

6. The ventilation and dust prevention device for the outdoor control cubicle according to claim 1, wherein a stud (3201) is further welded on the air inlet device bottom plate (32), a rectangular hole (3210) is further integrated on the air inlet device bottom plate (32), and the rectangular hole (3210) is perpendicular to the air inlet device bottom plate (32);

the efficient filter screen pressing plate (36) is provided with stud fixing holes (3602) for penetrating studs (3201), and the bottom of the efficient filter screen pressing plate (36) is integrally formed with convex bodies (3606) for penetrating into the rectangular holes (3210).

7. The ventilation and dust prevention device for the outdoor control cubicle according to claim 1, wherein a plurality of wedge-shaped holes (3604) and threaded holes (3601) are further provided on the high-efficiency filter screen pressing plate (36), hooks (3802) for extending into the wedge-shaped holes (3604) are provided on the side of the filter cotton pressing plate (38), and third bolt fixing holes (3801) for connecting the threaded holes (3601) are further provided on the filter cotton pressing plate (38);

the side edge of the high-efficiency filter screen pressing plate (36) is integrally formed with a reinforcing flange (3603), and the reinforcing flange (3603) is perpendicular to the high-efficiency filter screen pressing plate (36).

8. The ventilation and dust prevention device for the outdoor control cubicle according to claim 1, wherein the fan (30) is a bidirectional rotary fan, the bidirectional rotary fan is connected with a controller (1), and the controller (1) is used for controlling the steering of the bidirectional rotary fan.

9. A control cabinet, characterized in that, adopt any one of claims 1-8 an outdoor control cabinet with ventilating dust keeper, including the cabinet body, be equipped with two wind gaps on the lateral wall of the cabinet body, all be connected with air intake device bottom plate (32) on two wind gaps, two wind gaps are first wind gap and second wind gap respectively, first wind gap is close to the top of the cabinet body and arranges, the second wind gap is close to the bottom of the cabinet body and arranges, two fans are two-way rotating fan.

10. The control cabinet according to claim 9, further comprising an air outlet device bottom plate (42), wherein a plurality of fourth ventilation holes (4201) are formed in a side wall of the air outlet device bottom plate (42), an air outlet hole (4204) is formed in a bottom wall surface of the air outlet device bottom plate (42) in a penetrating manner, and a check valve (41) is connected to the air outlet hole (4204);

an air outlet is formed in the top wall surface of the cabinet body in a penetrating mode, and a bottom plate (42) of the air outlet device is connected to the air outlet.

Images