Self-cleaning dust removal device for power distribution cabinet

Abstract

The utility model relates to power distribution cabinet technical field especially is involved in power distribution cabinet self -cleaning dust collector, include: ventilation frame, set up in the air inlet channel, it has cavity in it, vibration net subassembly and at least one group of filter cotton are equipped in the cavity, blowback fan, set up in the cabinet, with ventilation frame corresponding, in the utility model, the dust in filter cotton is stripped through vibration net subassembly, the migration of stripping dust is realized through blowback fan, under the mutual cooperation of vibration net subassembly and blowback fan, realize the self -cleaning function of dust removal device, ensure the normal operation of dust removal device. Dust removal device in the utility model, simple structure, self -cleaning operation easy implementation, need not to prepare washing equipment alone can complete the flushing action to filter cotton, be suitable for the public, realize the recycling of filter cotton through the flushing of filter cotton, reduce the maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of power distribution cabinet technology, and in particular to a self-cleaning dust removal device for power distribution cabinets. Background Technology

[0002] Distribution cabinets are core equipment in power systems used for distributing, controlling, protecting, and monitoring electrical energy, and are widely used in industrial, commercial, building, and infrastructure sectors. As the "nerve center" of the power network, distribution cabinets integrate components such as circuit breakers, disconnect switches, relays, and monitoring instruments to achieve rational distribution and safe management of electrical energy, ensuring the stable operation of the power system.

[0003] The electrical components inside the distribution cabinet generate heat during operation. Therefore, an exhaust channel is typically installed at the top of the cabinet door, and an intake channel at the bottom. Outside air enters the cabinet through the intake channel, carries heat, and is then exhausted through the exhaust channel, thus achieving heat exchange. To improve heat exchange efficiency, an exhaust fan is usually installed at the exhaust channel. This fan accelerates the expulsion of air from the cabinet, creating negative pressure inside and further accelerating airflow. To prevent dust from outside the distribution cabinet from entering through the intake channel and affecting the electrical components, potentially causing safety hazards, a dust removal device is usually installed at the intake channel.

[0004] In existing technologies, dust removal devices mostly use filter cotton, which is installed in the air intake channel to effectively adsorb dust in the air, thus preventing dust from entering the cabinet with the airflow. However, in practical applications, it has been found that when the distribution cabinet is in a low-dust environment, the dust-proof ability of the filter cotton is acceptable; but when the distribution cabinet is in a high-dust environment, the filter cotton becomes ineffective after 2 to 3 days (the adsorption capacity of the filter cotton reaches saturation). To ensure the normal operation of the filter cotton and prevent dust from entering the cabinet, common solutions are: 1. Manual maintenance, such as replacing the filter cotton. Although this method is simple and easy to operate, frequent replacement of the filter cotton not only increases the workload but also increases maintenance costs. 2. Washing the filter cotton with cleaning equipment. Although this method replaces manual maintenance, the cleaning equipment is too complex and not suitable for general use. Utility Model Content

[0005] The purpose of this utility model is to provide a self-cleaning dust removal device for power distribution cabinets to solve the problems mentioned in the background art.

[0006] The technical solution adopted in this utility model is:

[0007] The self-cleaning dust removal device for the power distribution cabinet includes:

[0008] A ventilation frame is located at the air intake channel of the power distribution cabinet. It has a cavity inside, and a vibration mesh assembly and at least one set of filter cotton are provided inside the cavity. The vibration mesh assembly and the filter cotton are tightly fitted together.

[0009] A back-blowing fan is installed inside the cabinet, corresponding to the ventilation frame;

[0010] in,

[0011] The self-cleaning dust removal device of the power distribution cabinet has a dust removal state and a self-cleaning state;

[0012] When external airflow enters the ventilation frame through the air intake channel, dust is adsorbed by the filter cotton, and the self-cleaning dust removal device of the power distribution cabinet is in dust removal state at this time; when the vibration mesh assembly and the back blower work together to back-blow, the dust on the filter cotton is migrated, and the self-cleaning dust removal device of the power distribution cabinet is in self-cleaning state at this time.

[0013] Optionally, the switching between the dust removal state and the self-cleaning state can be implemented by the controller or manually.

[0014] Optionally, the vibration net assembly includes:

[0015] The main body of the mesh is disposed inside the cavity and has a connecting ear on it, the connecting ear extending through the ventilation frame to the outside of the ventilation frame;

[0016] A vibration motor is located at the end of the connecting ear that is outside the ventilation frame.

[0017] Optionally, the filter cotton is provided with a hot air cotton layer and a glass fiber layer stacked sequentially along the air inlet surface to the air outlet surface.

[0018] Optionally, the hot air cotton layer and the glass fiber layer are bonded together.

[0019] Optional,

[0020] The thickness of the hot air cotton layer is 0.4-0.6 mm;

[0021] The thickness of the glass fiber layer is 0.3-0.5 mm.

[0022] Optionally, the ventilation frame includes:

[0023] The frame body is located at the air intake channel, and its outer peripheral wall is attached to the inner wall of the air intake channel. A first ventilation hole is provided through one side wall of the frame body.

[0024] The cover is disposed on the main frame body, and a second ventilation hole is provided through it, the second ventilation hole corresponding to the first ventilation hole.

[0025] Optionally, the cover has a dust outlet hole and a rotatable anti-reverse plate, which corresponds to the second ventilation hole.

[0026] Optionally, the end of the cover with the dust outlet is provided with a transmission channel, and the transmission channel is connected to the cavity.

[0027] Optionally, a dust collection bin is provided at one end of the transmission channel, and the dust collection bin is connected to the transmission channel.

[0028] Compared with the prior art, the beneficial effects of this utility model are:

[0029] In this invention, airflow from outside the cabinet enters the filter cotton through the cover, where the filter cotton adsorbs dust particles, thus achieving the dust removal function of the dust removal device. Then, a vibrating mesh assembly removes the dust from the filter cotton, and a back-blowing fan reverses the flow, migrating the removed dust. The combined action of the vibrating mesh assembly and the back-blowing fan achieves the self-cleaning function of the dust removal device. This dust removal device has a simple structure, is easy to operate, and requires no separate cleaning equipment to rinse the filter cotton, making it suitable for a wide range of users. By rinsing the filter cotton, it allows for its recycling, reducing maintenance costs. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the exploded structure of the ventilation frame in this application;

[0032] Figure 2 This is a schematic diagram of the vibration net assembly in this application;

[0033] Figure 3 This is a schematic diagram of the structure of the filter cotton in this application;

[0034] Figure 4 This is a schematic diagram showing the location and structure of the ventilation frame, filter cotton, and vibration mesh assembly in this application;

[0035] Figure 5 This is a structural schematic diagram of an embodiment (inner side of the cabinet door) in this application;

[0036] Figure 6 for Figure 5Another perspective (outside the cabinet door) structural diagram.

[0037] Figure label:

[0038] 1. Ventilation frame; 11. Cavity;

[0039] 12. Frame main body; 121. First connecting part; 122. First ventilation hole;

[0040] 13. Cover; 131. Second ventilation hole; 132. Dust outlet; 133. Second connecting part; 134. Anti-reverse plate;

[0041] 2. Vibration net assembly; 21. Net body; 22. Connecting ear; 23. Vibration motor;

[0042] 3. Filter cotton; 31. Hot air cotton layer; 32. Glass fiber layer;

[0043] 4. Backflow blower; 5. Transmission channel; 6. Dust collection bin; 7. Cabinet door; 8. Exhaust fan. Detailed Implementation

[0044] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0045] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Currently, to ensure the normal operation of the filter cotton and prevent dust from entering the cabinet, the common solutions are: 1. Manual maintenance, such as replacing the filter cotton. Although this method is simple and easy to operate, frequent replacement of the filter cotton not only increases the workload but also increases maintenance costs. 2. Washing the filter cotton with cleaning equipment. Although this method replaces manual maintenance, the cleaning equipment is too complex and not suitable for most common problems.

[0047] like Figures 1-6 As shown in the figure, this utility model embodiment provides a self-cleaning dust removal device for a power distribution cabinet, which mainly includes: a ventilation frame 1, a filter cotton 3, a vibration mesh assembly 2, and a back-blowing fan 4.

[0048] in,

[0049] The ventilation frame 1 is located at the air intake channel of the cabinet door 7. It is a frame structure. The interior of the ventilation frame 1 has a cavity 11, which is used to accommodate the vibration mesh assembly 2 and filter cotton 3 mentioned below.

[0050] Filter cotton 3, at least one set, is embedded in cavity 11 and is configured to trap and adsorb dust in the intake air.

[0051] The vibrating mesh assembly 2 is also located inside the cavity 11 and is tightly fitted with the filter cotton 3. It is configured to vibrate the dust in the filter cotton 3 to remove the dust.

[0052] The back-blowing fan 4 is installed inside the cabinet, corresponding to the cavity 11 of the ventilation frame 1. When dust removal is required, the back-blowing fan 4 can be reversed to achieve the transfer of dust. This part will be explained in detail later.

[0053] When the external airflow enters the ventilation frame 1 through the air intake channel under the action of the exhaust fan 8, the dust is adsorbed by the filter cotton 3, and the dust removal device is in the dust removal state at this time; when the vibration mesh assembly 2 vibrates, it cooperates with the back blower 4 to move the dust accumulated on the filter cotton 3, and the dust removal device is in the self-cleaning state at this time.

[0054] Specifically, such as Figure 2 and Figure 4 As shown, the vibration net assembly 2 includes several parts such as the net body 21, connecting ear 22, and vibration motor 23.

[0055] The mesh body 21 is disposed within the cavity 11, and a connecting ear 22 is provided on it, extending through the ventilation frame 1 to the outside of the ventilation frame 1. A vibration motor 23 is disposed at the end of the connecting ear 22 located outside the ventilation frame 1. The vibration motor 23 drives the connecting ear 22 to vibrate, which in turn drives the mesh body 21 to vibrate, which in turn drives the filter cotton 3 to vibrate (the filter cotton 3 is periodically tapped). During the vibration process, dust is separated from the filter cotton 3.

[0056] like Figure 3 As shown, the filter cotton 3 adopts a gradient structure design, with a hot air cotton layer 31 and a glass fiber layer 32 stacked sequentially along the air inlet to air outlet direction. The hot air cotton layer 31 and the glass fiber layer 32 are bonded together using edge-limited bonding technology, using a two-component epoxy adhesive (EP-828 / 650 system) to form a continuous adhesive strip (adhesive layer thickness 0.1mm) within 5mm from the edge, while the central filtration area remains adhesive-free to ensure air permeability.

[0057] The inlet-side hot air cotton layer 31 is the primary filtration layer, with a thickness of 0.4-0.6 mm, used to capture larger particles. The outlet-side glass fiber layer 32 is the subsequent fine filtration layer, with a thickness of 0.3-0.5 mm, used to capture smaller particles.

[0058] like Figure 1 As shown, the ventilation frame 1 includes a frame body 12 and a cover 13 disposed on the frame body 12. That is, the frame body 12 and the cover 13 enclose a ventilation frame 1 with a cavity 11.

[0059] The frame body 12 is mounted on the air intake channel, and the main part of the frame body 12 is installed on the inner side of the cabinet door 7, with its outer peripheral wall roughly fitting against the inner wall of the air intake channel. A first connecting part 121 extends outward from the edge of the side of the frame body 12 that contacts the cover 13, and one side of the first connecting part 121 is threadedly connected to the outer side of the cabinet door 7 (e.g., ...). Figure 6 As shown). Multiple first ventilation holes 122 arranged in a linear array are provided through the main side wall of the frame body 12. When the dust removal device is in the dust removal state, the main side wall of the frame body 12 is the air outlet side, and when the dust removal device is in the self-cleaning state, the main side wall of the frame body 12 is the air inlet side (the working process and principle are detailed later).

[0060] A second connecting portion 133 extends outward from the edge of the side of the cover 13 that contacts the frame body 12, and the second connecting portion 133 connects to the other side of the first connecting portion 121. Multiple second ventilation holes 131, arranged in a linear array and corresponding to the first ventilation holes 122, are provided through the main sidewall of the cover 13. When the dust removal device is in dust removal mode, the main sidewall of the cover 13 is the air inlet side; when the dust removal device is in self-cleaning mode, the main sidewall of the cover 13 is the air outlet side.

[0061] Furthermore, to facilitate maintenance of the filter cotton 3 and the vibrating mesh assembly 2, the frame body 12 and the cover 13 in this embodiment are detachably connected. Preferably, the second connecting portion 133 of the cover 13 is threadedly connected to the first connecting portion 121 of the frame body 12.

[0062] When using, such as Figures 5-6 As shown, the exhaust fan 8 creates a negative pressure inside the cabinet, causing airflow from outside the cabinet to enter the filter cotton 3 through the cover 13. The filter cotton 3 adsorbs dust particles in the air, thus achieving the dust removal function of the dust removal device. The airflow after dust removal undergoes heat exchange inside the cabinet, and then, under the action of the exhaust fan 8, the air carrying heat is exhausted to the outside of the cabinet door 7 (e.g., Figure 6(In the direction indicated by the arrow). After the filter cotton 3 has been continuously adsorbing for two hours, the vibration motor 23 is started. The vibration motor 23 drives the connecting ear 22 to vibrate, the connecting ear 22 drives the mesh body 21 to vibrate, and the mesh body 21 drives the filter cotton 3 to vibrate. During the vibration, the filter cotton 3 shakes off and peels off the dust. At the same time, the back-blowing fan 4 is started to back-blow. The airflow after back-blowing passes through the frame body 12, cavity 11 and cover 13 in sequence from inside the cabinet (e.g., Figure 5 (In the direction indicated by the arrow), the stripped dust migrates outward from the cabinet, thereby achieving the self-cleaning function of the dust removal device. After the vibration motor 23 and the back-blowing fan 4 have been working continuously for 1-5 minutes, the vibration motor 23 and the back-blowing fan 4 are turned off. After the filter cotton 3 has been adsorbing for another two hours, the vibration motor 23 and the back-blowing fan 4 are restarted and work continuously for another 1-5 minutes before stopping. This cycle repeats.

[0063] Furthermore, to facilitate the directional migration of the stripped dust and promote its centralized collection, in this embodiment, as... Figure 1 and Figure 4 As shown, multiple anti-reverse plates 134 arranged in a linear array and corresponding to the second ventilation hole 131 are rotatably disposed on the inner wall surface of the cover 13. A dust outlet hole 132 is provided through the anti-reverse plates 134, that is, on the bottom wall of the cover 13.

[0064] When external airflow enters the cabinet through the cover 13, the anti-reverse slip 134 rotates away from the second ventilation hole 131 under the action of the airflow. At this time, the anti-reverse slip 134 is partially in contact with the inner wall of the cover 13, and the second ventilation hole 131 is in an open state. When the stripped dust migrates out of the cabinet under the back-blowing action of the back-blowing fan 4, the anti-reverse slip 134 rotates closer to the second ventilation hole 131 under the action of the back-blowing fan 4. At this time, the anti-reverse slip 134 is completely in contact with the inner wall of the cover 13, the second ventilation hole 131 is in a closed state, and the stripped dust is discharged through the dust outlet 132.

[0065] Furthermore, such as Figure 6 As shown, a transmission channel 5 is provided at one end of the cover 13 where a dust outlet 132 is provided, and the transmission channel 5 is connected to the cavity 11.

[0066] Furthermore, a dust collection bin 6 is provided at the free extension end of the transmission channel 5, and the dust collection bin 6 is connected to the transmission channel 5.

[0067] When using, such as Figure 4As indicated by the arrow, when the stripped dust migrates out of the cabinet under the back-blowing action of the back-blowing fan 4, the anti-reverse plate 134 rotates in the direction close to the second ventilation hole 131 under the action of the back-blowing fan 4. At this time, the anti-reverse plate 134 is completely attached to the inner wall of the cover 13, the second ventilation hole 131 is in a closed state, and the stripped dust is transported to the transmission channel 5 through the dust outlet 132, and then transported to the dust collection bin 6 through the transmission channel 5, and discharged through the dust collection bin 6.

[0068] It should be noted that, in this embodiment, the switching between the self-cleaning state and the dust removal state of the dust removal device can be achieved through a PLC controller, or it can be done manually. When it is necessary to achieve the state switching through a PLC controller, it can be achieved using existing technology, which will not be elaborated upon in this embodiment.

[0069] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A self-cleaning dust removal device for power distribution cabinets, characterized in that, include: A ventilation frame, located at the air intake channel of the distribution cabinet, has a cavity inside. A vibration mesh assembly and at least one set of filter cotton are installed within the cavity, with the vibration mesh assembly and filter cotton tightly fitted together. A back-blowing fan is installed inside the cabinet, corresponding to the ventilation frame. The distribution cabinet's self-cleaning dust removal device has a dust removal state and a self-cleaning state. When external airflow enters the ventilation frame through the air intake channel, dust is adsorbed by the filter cotton, and the distribution cabinet's self-cleaning dust removal device is in the dust removal state. When the vibration mesh assembly and the back-blowing fan work together to reverse the airflow, the dust on the filter cotton is migrated, and the distribution cabinet's self-cleaning dust removal device is in the self-cleaning state.

2. The self-cleaning dust removal device for power distribution cabinets according to claim 1, characterized in that, The switching between the dust removal state and the self-cleaning state is implemented by the controller or manually.

3. The self-cleaning dust removal device for power distribution cabinets according to claim 1, characterized in that, The vibration net assembly includes: The main body of the mesh is disposed inside the cavity and has a connecting ear on it, the connecting ear extending through the ventilation frame to the outside of the ventilation frame; A vibration motor is located at the end of the connecting ear that is outside the ventilation frame.

4. The self-cleaning dust removal device for power distribution cabinets according to claim 1, characterized in that, The filter cotton is arranged in layers of hot air cotton and glass fiber along the direction from the air inlet to the air outlet.

5. The self-cleaning dust removal device for power distribution cabinets according to claim 4, characterized in that, The hot air cotton layer and the glass fiber layer are bonded together.

6. The self-cleaning dust removal device for power distribution cabinets according to claim 4, characterized in that, The thickness of the hot air cotton layer is 0.4-0.6 mm; the thickness of the glass fiber layer is 0.3-0.5 mm.

7. The self-cleaning dust removal device for power distribution cabinets according to claim 1, characterized in that, The ventilation frame includes: a frame body disposed at the air intake channel, the outer peripheral wall of which is attached to the inner wall of the air intake channel, and a first ventilation hole is provided through one side wall of the frame body; and a cover disposed on the frame body, on which a second ventilation hole is provided through, the second ventilation hole corresponding to the first ventilation hole.

8. The self-cleaning dust removal device for power distribution cabinets according to claim 7, characterized in that, The cover has a dust outlet hole and a rotatable anti-reverse plate, which corresponds to the second ventilation hole.

9. The self-cleaning dust removal device for power distribution cabinets according to claim 8, characterized in that, The cover has a transmission channel at one end where the dust outlet is located, and the transmission channel is connected to the cavity.

10. The self-cleaning dust removal device for power distribution cabinets according to claim 9, characterized in that, A dust collection chamber is provided at one end of the transmission channel, and the dust collection chamber is connected to the transmission channel.

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