Portable low-voltage comprehensive distribution box

Abstract

The invention belongs to the technical field of power distribution cabinet equipment, and particularly relates to a portable low-voltage comprehensive power distribution box which comprises a box body and a filter screen plate installed on the box body, an air inlet groove is formed in the box body, and the filter screen plate is installed in the air inlet groove; the multi-layer air filter further comprises a layer-by-layer stacking and detaching mechanism, and the layer-by-layer stacking and detaching mechanism is installed in the air inlet groove and used for stacking and detaching the multiple layers of filter screen plates. The multi-layer filter screen plates are extruded into a whole through the layering and disassembling mechanism, then the air flowing path is changed by means of dislocation of the mesh holes in the filter screen plates, and along with improvement of the complexity degree of the air flowing path, the intercepting effect of the multi-layer filter screen plates on impurities in air is gradually improved, so that the filtering effect of the multi-layer filter screen plates on the impurities in the air is improved. And after the single-layer filter screen plate is detached, the single-layer filter screen plate can be conveniently cleaned, so that the convenience of cleaning the filter screen plate is realized while the air filtering precision is maintained.

Description

Technical Field

[0001] The invention belongs to the technical field of power distribution cabinet equipment, in particular to a portable low-voltage integrated power distribution box. Background Art

[0002] Low-voltage integrated distribution cabinet is an important distribution device in the classification of electrical equipment. It is used to distribute, control, monitor and protect electrical energy in low-voltage power systems. It is widely used in industrial and mining enterprises, commercial buildings, residential communities and other places.

[0003] Low-voltage integrated distribution cabinets are usually equipped with circulating fans to achieve heat dissipation for electrical components inside the distribution cabinet in an air-cooled manner. At the same time, in order to filter dust and impurities from the cooling air, a filter plate fixedly mounted on the distribution cabinet body is usually used to filter out dust and impurities using the selective permeability of the filter plate. When the low-voltage integrated distribution cabinet is used outdoors, due to the complexity of the outdoor environment, the dust accumulation rate of the filter plate is too fast during air cooling. As dust and impurities accumulate step by step on the filter plate, the mesh holes of the filter plate will gradually become clogged. Although the reduction of the mesh holes will further enhance the filtering effect of the filter plate, thereby effectively reducing the amount of dust entering the distribution cabinet, the continuous clogging of the filter plate mesh holes will also lead to a continuous decrease in the ventilation volume of the filter plate, thereby leading to a continuous decrease in the heat dissipation efficiency, and ultimately, it will be unable to meet the ventilation and heat dissipation needs.

[0004] In order to solve the above problems, the Chinese patent with publication number CN118572523A discloses an MNS type low-voltage distribution cabinet, which can effectively reduce the downtime of the ventilation device. As the internal and external cleaning devices are energized and move to the right, the ventilation filter plate on the left is cleaned, and its ventilation duct is also opened. The incoming air can enter the distribution cabinet through the cleaned ventilation filter plate on the left, and the uncleaned part on the right is still cleaned by the cleaning device. Cleaning and ventilation are operated synchronously, taking into account heat dissipation and dust cleaning, ensuring the temperature and cleanliness of the air in the distribution cabinet. However, in actual application, it was found that when the mesh size of the filter plate used is large, the dust blocking effect of the cleaned filter plate is poor, and if the mesh size of the filter plate used is small, the cleaning of the blocked filter plate is too difficult, and a higher cleaning frequency is required to maintain the normal ventilation effect of the filter plate.

[0005] In view of this, the present invention proposes a portable low-voltage integrated distribution box to solve the above technical problems. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the present invention proposes a portable low-voltage integrated distribution box.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: the portable low-voltage integrated distribution box of the present invention comprises a box body and a filter plate installed on the box body, the box body is provided with an air intake groove, and the filter plate is installed in the air intake groove;

[0008] It also includes a layered stacking and disassembling mechanism, which is installed in the air inlet groove and is used for stacking and disassembling multiple layers of filter plates;

[0009] The layered stacking and disassembling mechanism includes a mounting box and a frame plate;

[0010] The installation box is installed in the air inlet groove. The installation box is a cavity-type structure with openings at both ends. The installation box extends into the box and is connected to the ventilation equipment in the box.

[0011] The frame plate is detachably fixedly mounted on one end of the installation box that is in contact with the outside world;

[0012] The filter plates are designed in plural, and multiple filter plates are installed in the installation box, and the mesh distribution of the multiple filter plates is staggered;

[0013] It also includes an air volume regulating mechanism, which is installed in the installation box. The air volume regulating mechanism adjusts the ventilation volume by adjusting the gaps between multiple filter plates.

[0014] Preferably, the air volume adjustment mechanism includes a top frame and a support spring;

[0015] A support spring is fixedly installed at one end of the top frame away from the frame plate, and the support spring is fixedly connected to the installation box. An oblique groove is opened on the installation box, and the oblique groove extends to the side walls of multiple filter plates. The depth of the oblique groove is less than the total thickness of the multiple filter plates.

[0016] Preferably, a plurality of elastic sheets are fixedly mounted on the inner side of the top frame. In the initial state, the plurality of elastic sheets are assembled to form a conical structure and seal the inner cavity of the top frame. When the ventilation device is started, the plurality of elastic sheets are separated and the inner cavity of the top frame is opened.

[0017] Preferably, the plurality of filter plates are composed of a magnetic frame and a filter, and two adjacent filter plates attract each other. The installation box is provided with evenly distributed expansion slots, and a stop block is elastically installed in the expansion slot by a spring. The stop block is designed with an inclined surface away from the side of the frame plate, and the filter plates are provided with a docking groove on the side facing the frame plate, and the docking groove matches the stop block.

[0018] Preferably, the distance between the frame plate and the expansion slot and the distance between two adjacent expansion slots are the same and greater than the thickness of a single filter plate, and the distance between the first and last expansion slots is less than the total thickness of the filter plate equal to the number of expansion slots.

[0019] Preferably, a replacement recoil mechanism is included, the replacement recoil mechanism cooperates with the layered stacking and disassembling mechanism, and the replacement recoil mechanism includes a replacement box and a discharge pipe;

[0020] The replacement box is installed in the box, the replacement box is located below the installation box, and the replacement box is conductively connected to the air outlet of the negative pressure vacuum device in the box;

[0021] A discharge pipe is fixedly installed between the installation box and the replacement box, and the discharge pipe extends to the inner cavity of the installation box and the replacement box, and the filter plate close to the frame plate is located directly above the discharge pipe;

[0022] The opening area of the discharge pipe is larger than the bottom area of the filter plate, and the opening of the discharge pipe is larger than the thickness of a single filter plate and smaller than the total thickness of the two filter plates.

[0023] Preferably, an air outlet is provided on the replacement box, and the air outlet and the installation box opening are on different sides of the box body. A drainage groove is provided on the side of the replacement box facing the air outlet, and multiple drainage grooves are evenly arranged in the vertical direction. The drainage grooves are all connected to the air outlet end of the negative pressure dust collection equipment through the inner cavity of the replacement box, and the drainage grooves are used to guide the airflow to impact the filter plate.

[0024] Preferably, the replacement recoil mechanism further comprises a piston plate, a retaining ring, a return spring, a feeding tube and an electric push rod;

[0025] A piston plate is sealingly and slidably mounted in the replacement box, a return spring is fixedly mounted on the side of the piston plate away from the discharge pipe, and the return spring is fixedly connected to the inner wall of the replacement box;

[0026] A clamping ring is fixedly installed on the side of the piston plate close to the discharge pipe. The clamping ring is a C-shaped structure and is used to fix the filter plate;

[0027] The feeding pipe is fixedly installed between the installation box and the replacement box, and the feeding pipe extends to the inner cavity of the installation box and the replacement box;

[0028] An electric push rod is installed at the bottom of the replacement box. When the piston plate is reset, the electric push rod, the clamping ring and the discharge pipe are on the same vertical route.

[0029] Preferably, the inner wall of the clamping ring is made of elastic material, and the clamping ring forms an elastic clamp on the filter plate.

[0030] Preferably, the top cross-section of the filter plate is conical in design.

[0031] The beneficial effects of the present invention are as follows:

[0032] 1. The portable low-voltage integrated distribution box described in the present invention adopts a layered stacking and disassembling mechanism to extrude the multi-layer filter plates into a whole, and then utilizes the misalignment of the mesh holes on the multi-layer filter plates to change the air flow path. As the complexity of the air flow path increases, the multi-layer filter plates will gradually improve their interception effect on impurities in the air. When the single-layer filter plates are removed, the single-layer filter plates can be conveniently cleaned, thereby achieving the convenience of cleaning the filter plates while maintaining the air filtration accuracy.

[0033] 2. The portable low-voltage integrated distribution box described in the present invention, through the successive separation of multiple filter plates, cooperates with the second air circulation path provided by the oblique through-groove. When used for a long time, when the blockage degree of multiple filter plates increases, the first, second and other filter plates can be passed over in succession to maintain the heat dissipation of the electrical components inside the box. Moreover, as time goes by, dust gradually accumulates on the filter plates, even if the number of filter plates used for filtration gradually decreases, the filtering effect on the air is still maintained to a certain extent, thereby reducing the probability of a large amount of dust entering the inside of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The present invention will be further described below with reference to the accompanying drawings.

[0035] Figure 1 It is an overall schematic diagram of the present invention;

[0036] Figure 2 It is a schematic diagram of the assembly of the installation box and the replacement box in the present invention;

[0037] Figure 3 It is a three-dimensional image of the frame board;

[0038] Figure 4 It is a three-dimensional view of the top frame;

[0039] Figure 5 It is a three-dimensional diagram of the filter plate;

[0040] Figure 6 This is a three-dimensional diagram of the assembly of the piston plate and the retaining ring;

[0041] Figure 7 It is a three-dimensional diagram of the electric linear actuator;

[0042] Figure 8 It is an overall cross-sectional view of the installation box and the replacement box;

[0043] Figure 9 yes Figure 8 A partial enlarged view of point A in the middle;

[0044] Figure 10 is a transverse cross-sectional view of the replacement cartridge;

[0045] Figure 11 is a transverse cross-sectional view of the installation box;

[0046] In the figure: 1. Box body; 11. Air inlet slot; 2. Mounting box; 21. Frame plate; 22. Filter plate; 23. Top frame; 24. Support spring; 25. Oblique slot; 26. Elastic sheet; 3. Telescopic slot; 31. Stop block; 32. Docking slot; 4. Replacement box; 41. Discharge pipe; 42. Air outlet; 43. Drainage slot; 5. Piston plate; 51. Return spring; 52. Mounting ring; 53. Feeding pipe; 54. Electric push rod. DETAILED DESCRIPTION

[0047] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0048] like Figures 1 to 11 As shown, the portable low-voltage integrated distribution box of the present invention comprises a box body 1 and a filter plate 22 mounted on the box body 1. The box body 1 is provided with an air inlet groove 11, and the filter plate 22 is mounted in the air inlet groove 11;

[0049] It also includes a layered stacking and disassembling mechanism, which is installed in the air inlet groove 11 and is used to stack and disassemble multiple layers of filter plates 22;

[0050] The layered stacking and disassembling mechanism includes a mounting box 2 and a frame plate 21;

[0051] The installation box 2 is installed in the air inlet groove 11. The installation box 2 is a cavity-type structure with openings at both ends. The installation box 2 extends into the box body 1 and is connected to the ventilation equipment in the box body 1.

[0052] The frame plate 21 is detachably fixedly mounted on the end of the installation box 2 that is in contact with the outside world. The frame plate 21 is made of a grid plate. The frame plate 21 can not only cooperate with the top frame 23 to clamp the filter plate 22, but also intercept large-volume debris from the outside world.

[0053] The filter plates 22 are designed in plural, and multiple filter plates 22 are installed in the installation box 2, and the mesh distribution of the multiple filter plates 22 is staggered;

[0054] When the distribution box is in normal use, in order to maintain the filtering effect of the air entering the box body 1 and to conveniently clean the filter plate 22, the present invention adopts a layered stacking mechanism to combine and manage multiple filter plates 22, so that when the filter plates 22 are closed, the filtering accuracy of the air is maintained, and when the multiple filter plates 22 are disassembled, it is convenient to clean the filter plates 22.

[0055] Specifically, in the present invention, the layered stacking mechanism is installed in the air inlet groove 11, wherein the installation box 2 is a straight cylindrical structure with openings at both ends, wherein one end opening of the installation box 2 is directly connected to the outside world, and the other end opening is connected to the ventilation equipment installed in the air inlet groove 11, and multiple filter plates 22 are installed in the inner cavity of the installation box 2. In the initial state, multiple filter plates 22 are superimposed on each other, and the mesh distribution of two adjacent filter plates 22 is staggered. Therefore, when multiple filter plates 22 are superimposed, when air enters the interior of the multiple filter plates 22, the air movement route gradually deviates from the straight line under the obstruction of the multiple filter plates 22, while extending the air movement path, improving the interception effect of impurities in the air, thereby improving the air filtration accuracy. It should be noted that when multiple filter plates 22 are superimposed, when the mesh distribution of the multiple filter plates 22 is flat, The smaller the number of Qi, the better the effect of intercepting impurities in the air. Therefore, when the ventilation equipment is started, the ventilation equipment draws the air in the installation box 2 and discharges it into the box body 1, and uses the airflow to cool the electrical components in the box body 1. When the air in the installation box 2 is extracted, a negative pressure is formed in the inner cavity of the installation box 2, which causes the outside air to enter the installation box 2. In this process, the air comes into contact with the multi-layer filter plates 22, thereby filtering the air. As time goes by, the dust and debris intercepted on the multiple filter plates 22 gradually increase, and the closer the filter plate 22 is to the outside, the higher the degree of blockage. As the degree of blockage gradually increases, the ventilation volume in the installation box 2 gradually decreases. At this time, the outermost filter plate 22 is removed and cleaned. Since the mesh of the single filter plate 22 after removal is larger, it is more convenient to clean.

[0056] The present invention adopts a layered stacking mechanism to squeeze multiple filter plates 22 into a whole, and then utilizes the misalignment of the mesh holes on the multiple filter plates 22 to change the air flow path. As the complexity of the air flow path increases, the interception effect of the multi-layer filter plates 22 on impurities in the air will gradually improve. When the single-layer filter plate 22 is removed, the single-layer filter plate 22 can be conveniently cleaned, thereby maintaining the air filtration accuracy while achieving the convenience of cleaning the filter plate 22.

[0057] It also includes an air volume regulating mechanism, which is installed in the installation box 2. The air volume regulating mechanism adjusts the ventilation volume by adjusting the gap between the multi-layer filter plates 22.

[0058] The air volume adjustment mechanism includes a top frame 23 and a support spring 24;

[0059] The top frame 23 is fixedly installed with a support spring 24 at one end away from the frame plate 21. The support spring 24 is fixedly connected to the installation box 2. The support spring 24 pushes the top frame 23 and cooperates with the frame plate 21 to clamp the filter plate 22. When the length of the support spring 24 is shortened, the gap between multiple filter plates 22 can be changed. An oblique through groove 25 is opened on the installation box 2. The oblique through groove 25 extends to the side walls of multiple filter plates 22. The depth of the oblique through groove 25 is less than the total thickness of multiple filter plates 22.

[0060] The plurality of filter plates 22 are composed of a magnetic frame and a filter screen. Two adjacent filter plates 22 attract each other. The mounting box 2 is provided with evenly distributed telescopic slots 3. A stopper 31 is elastically installed in the telescopic slot 3 by a spring. The stopper 31 is designed with an inclined surface away from the side of the frame plate 21. The filter plates 22 are provided with a docking slot 32 on the side facing the frame plate 21, and the docking slot 32 matches the stopper 31.

[0061] The spacing between the frame plate 21 and the expansion slot 3 and the spacing between two adjacent expansion slots 3 are the same and greater than the thickness of a single filter plate 22. The spacing between the first and last expansion slots 3 is less than the total thickness of the filter plates 22 equal to the number of expansion slots 3. That is to say, as in this embodiment, the number of expansion slots 3 is three, and the spacing between the first and last expansion slots 3 is less than the stacked thickness of the three filter plates 22. Therefore, when the filter plate 22 is squeezed and fitted on the frame plate 21, the fourth filter plate 22 cannot completely pass over the rearmost stopper 31.

[0062] Under the continuous suction action of the ventilation device, the negative pressure intensity of the installation box 2 near the ventilation device will gradually increase. At this time, under the action of negative pressure and external atmospheric pressure, the air not only circulates along the outermost filter plate 22, but also flows into the side walls of multiple filter plates 22 through the oblique grooves 25. Since in the present invention, the total thickness of the filter plate 22 is greater than the depth of the oblique grooves 25, the air in the oblique grooves 25 cannot pass through the filter plate 22 to enter the deep part of the installation box 2. Therefore, the air enters the gaps between the multiple filter plates 22. As the blockage degree of the outermost filter plate 22 increases, the air flow rate in the oblique grooves 25 gradually increases. Combined with the negative pressure in the deep part of the installation box 2, the filter plate 22 squeezes the support spring 24, and the multiple filter plates 22 all have a tendency to move toward the deep part of the installation box 2. Since the multiple filter plates 22 all adopt magnetic edges The frame and the filter screen are composed, so multiple filter plates 22 move synchronously, but as the movement proceeds, the filter plate 22 close to the frame plate 21 is first blocked by the block 31, and under the continuous negative pressure traction, the first filter plate 22 is separated from the subsequent filter plate 22, and then as the traction distance increases, the second and third filter plates 22 are separated from the subsequent filter plates 22 in succession. In this process, the spacing between the filter plates 22 increases, which will cause the air in the oblique groove 25 to directly enter the gap between the filter plates 22, and finally be filtered by the remaining filter plates 22, thereby alleviating the negative pressure deep in the installation box 2 and maintaining the air flow into the box body 1. When the box body 1 does not need to dissipate heat, the ventilation equipment stops running. At this time, under the action of the support spring 24, the filter plate 22 will be pushed to be squeezed and fitted again for the next use.

[0063] It should be noted that, as time goes by, the multiple filter plates 22 arranged in sequence all have a certain degree of clogging. Therefore, when the first filter plate 22 is separated from the second filter plate 22, part of the air directly passes through the gap between the first and second filter plates 22 and enters the subsequent filter plate 22. Although this part of the air has not been filtered by one filter plate 22 during the flow process, since the second and subsequent filter plates 22 have been used for a certain period of time, their filtration accuracy has been improved due to the adhesion of dust and impurities. Therefore, the interception accuracy of dust in the air will not be significantly improved. Lowered, similarly, as more filter plates 22 are separated, the subsequent filter plates 22 are used for a longer time, so that the dust in the air entering the interior of the box body 1 is maintained within a certain range, and due to the presence of the oblique grooves 25, when the air flows along the oblique grooves 25, the flow cross-section gradually decreases, and then the air entering the gap between the filter plates 22 from the oblique grooves 25 only accounts for a part of the total air flow. Therefore, during long-term use, the degree of blockage of the filter plates 22 is positively correlated with their arrangement position. Therefore, when cleaning, the filter plates 22 can be directly removed one by one from the end of the installation box 2 close to the outside.

[0064] In the present invention, the multiple filter plates 22 are separated in sequence, and the second air circulation path provided by the oblique groove 25 is coordinated. When used for a long time, when the blockage degree of the multiple filter plates 22 increases, the first, second, and other filter plates 22 can be passed over in sequence to maintain the heat dissipation of the electrical components inside the box 1. Moreover, as time goes by, dust gradually accumulates on the filter plates 22. Even if the number of filter plates 22 used for filtering gradually decreases, the filtering effect on the air is still maintained to a certain extent, thereby reducing the probability of a large amount of dust entering the interior of the box 1.

[0065] As a preferred embodiment of the present invention, a plurality of elastic sheets 26 are fixedly installed on the inner side of the top frame 23. In the initial state, the plurality of elastic sheets 26 are assembled to form a conical structure and seal the inner cavity of the top frame 23. When the ventilation device is started, the plurality of elastic sheets 26 are separated and the inner cavity of the top frame 23 is opened.

[0066] The presence of the elastic sheet 26 can correspondingly enhance the attraction of the negative pressure on the top frame 23, so as to achieve the movement effect of the multi-layer filter plate 22 under the traction of the negative pressure.

[0067] As a preferred embodiment of the present invention, a replacement recoil mechanism is included, which cooperates with the layered stacking and disassembling mechanism, and the replacement recoil mechanism includes a replacement box 4 and a discharge pipe 41;

[0068] The replacement box 4 is installed in the box body 1, and the replacement box 4 is located below the installation box 2. The replacement box 4 is conductively connected to the air outlet of the negative pressure dust collection device in the box body 1. The ventilation device and the negative pressure dust collection device act simultaneously inside the box body 1. The former is used to pump low-temperature air into the box body 1, and the latter sucks the air in the box body 1 through negative pressure to clean the dust on the electrical components. The simultaneous use of the two is one of the common solutions for controlling the dust content of components in the box body 1 in the related art.

[0069] A discharge pipe 41 is fixedly installed between the installation box 2 and the replacement box 4. The discharge pipe 41 extends to the inner cavity of the installation box 2 and the replacement box 4, and the filter plate 22 close to the frame plate 21 is located directly above the discharge pipe 41. The discharge pipe 41 is used to guide the first filter plate 22 in the installation box 2 to facilitate the filter plate 22 to fall into the replacement box 4;

[0070] The opening area of the discharge pipe 41 is larger than the bottom area of the filter plate 22 , and the opening of the discharge pipe 41 is larger than the thickness of a single filter plate 22 and smaller than the total thickness of the two filter plates 22 .

[0071] The replacement box 4 is provided with an air outlet 42, and the air outlet 42 and the opening of the installation box 2 are on different sides of the box body 1. The air outlet 42 extends and passes through the box body 1. The air outlet 42 and the opening of the installation box 2 are on different sides, which can effectively avoid the probability of hot air discharged from the air outlet 42 directly entering the installation box 2. The replacement box 4 is provided with a drainage groove 43 on the side facing the air outlet 42, and multiple drainage grooves 43 are evenly arranged in the vertical direction. The drainage grooves 43 are all connected to the air outlet end of the negative pressure vacuum cleaner through the inner cavity of the replacement box 4.

[0072] As time goes by, the filter plate 22 in the installation box 2 is blocked more and more, and the first filter plate 22 is blocked the most. Therefore, when the ventilation equipment is started, under the action of negative pressure, the first filter plate 22 is separated from the second filter plate 22 under the action of the stopper 31, and under the action of gravity, the first filter plate 22 falls into the replacement box 4 along the discharge pipe 41. At this time, the negative pressure dust collection equipment in the box body 1 discharges the airflow into the drainage groove 43. In this embodiment, the drainage groove 43 is F-shaped, and two outlets of the drainage groove 43 are located on both sides of the filter plate 22. Since the two outlets of the drainage groove 43 are respectively located on both sides of the filter plate 22, the airflow directly impacts the two sides of the filter plate 22. At the same time, because the air outlet 42 is misaligned with the fallen filter plate 22, the air outlet 42 is only connected to one side of the filter plate 22, and the conductive side is surrounded by dust interception side. Refer to the attached manual Figure 8 The air outlet 42 is connected to the left side of the filter plate 22, so the air pumped to the right side of the filter plate 22 needs to pass through the mesh holes of the filter plate 22 and enter the space on the left side of the filter plate 22 before it can be discharged outward along the air outlet 42, thereby achieving a backwashing effect on the filter plate 22 and accelerating the removal efficiency of dust on the filter plate 22. It should be noted that in order to further improve the backwashing effect of the filter plate 22, in actual design, the outlet channel of the two outlet channels of the drainage groove 43 has a larger diameter toward the right side of the filter plate 22, and a smaller diameter toward the left side of the filter plate 22. At the same time, in some embodiments of the present application, the drainage groove 43 is a C-shaped structure, and its air outlet end is only connected to the space on the right side of the filter plate 22. Therefore, the airflow pumped by the negative pressure dust collection equipment is all used to back-impact the filter plate 22, thereby enhancing the cleaning effect of the filter plate 22.

[0073] As a preferred embodiment of the present invention, the replacement recoil mechanism further includes a piston plate 5, a retaining ring 52, a return spring 51, a feeding tube 53 and an electric push rod 54;

[0074] A piston plate 5 is sealingly and slidably mounted in the replacement box 4. A return spring 51 is fixedly mounted on the side of the piston plate 5 away from the discharge pipe 41. The return spring 51 is fixedly connected to the inner wall of the replacement box 4.

[0075] A snap ring 52 is fixedly mounted on the side of the piston plate 5 close to the discharge pipe 41. The snap ring 52 is a C-shaped structure and is used to fix the filter plate 22.

[0076] The feeding pipe 53 is fixedly installed between the installation box 2 and the replacement box 4, and the feeding pipe 53 extends to the inner cavity of the installation box 2 and the replacement box 4;

[0077] An electric push rod 54 is installed at the bottom of the replacement box 4. When the piston plate 5 is reset, the electric push rod 54, the retaining ring 52 and the discharge pipe 41 are on the same vertical route.

[0078] The inner wall of the clamping ring 52 is made of elastic material, and the clamping ring 52 elastically clamps the filter plate 22 .

[0079] The top cross-section of the filter plate 22 is conical in design.

[0080] As the negative pressure dust suction device is continuously started, the gas is pumped into the inner cavity of the replacement box 4. In the initial state, under the action of the piston plate 5 and the return spring 51, the negative pressure dust suction device and the drainage groove 43 are in a non-conductive state. Therefore, as the air flow is continuously pumped, the piston plate 5 moves toward the discharge pipe 41 under the push of the air pressure, and in the process of movement, the retaining ring 52 clamps the side wall of the filter plate 22. At this time, the piston plate 5 passes over the inlet of the drainage groove 43 until the gas is sprayed on both sides of the filter plate 22 through the drainage groove 43, and the filter plate 22 entering the replacement box 4 is impacted by the air flow, causing dust and impurities to separate from the filter plate 22, and then the filter plate 22 is cleaned. When the heat dissipation structure in the box body 1 After the end, the negative pressure dust collection equipment stops running. Under the action of the return spring 51, the piston plate 5 and the retaining ring 52 pull the filter plate 22 to move, and finally the electric push rod 54, the filter plate 22 and the feeding pipe 53 are aligned. The electric push rod 54 pushes the filter plate 22 to move into the installation box 2 under the control of a pre-set program. The top of the filter plate 22 is inserted into the gap between the top frame 23 and the filter plate 22 in the installation box 2 under the guidance of the feeding pipe 53, so that the cleaned filter plates 22 are arranged at the tail ends of multiple filter plates 22, thereby realizing the recycling of the filter plates 22. When the distribution box is used outdoors, the manual maintenance cycle of the filter plate 22 is extended, and the air filtering effect is maintained for a long time.

[0081] It should be noted that in other embodiments of the present application, in order to enhance the counter-impact effect on the filter plate 22, a multi-headed tube for guiding the airflow is also installed in the gap between the piston plate 5 and the retaining ring 52. One end of the multi-headed tube is aligned with the opening of the drainage tube, and the other ends of the multi-headed tube are spread out toward various parts of the filter plate 22. Therefore, the airflow enters the multi-headed tube from the drainage groove 43, and under the guidance of the multi-headed tube, is sprayed onto the filter plate 22, thereby achieving an impact on the filter plate 22.

[0082] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A portable low-voltage integrated distribution box, comprising a box body (1) and a filter plate (22) mounted on the box body (1), wherein the box body (1) is provided with an air inlet groove (11), and the filter plate (22) is mounted in the air inlet groove (11); Its characteristics are: It also includes a layered stacking and disassembling mechanism, which is installed in the air inlet groove (11) and is used for stacking and disassembling multiple layers of filter screen plates (22); The layered stacking and disassembling mechanism comprises a mounting box (2) and a frame plate (21); The installation box (2) is installed in the air inlet groove (11). The installation box (2) is a cavity-type structure with openings at both ends. The installation box (2) extends into the box body (1) and is connected to the ventilation equipment in the box body (1). The frame plate (21) is detachably fixedly mounted on one end of the installation box (2) that is in communication with the outside world; The filter plates (22) are designed in plural, and a plurality of the filter plates (22) are installed in the installation box (2), and the mesh distribution of the plurality of the filter plates (22) is staggered; It also includes an air volume regulating mechanism, which is installed in the installation box (2) and adjusts the ventilation volume by adjusting the gaps between the plurality of filter plates (22).

2. A portable low-voltage integrated distribution box according to claim 1, characterized in that: The air volume adjustment mechanism includes a top frame (23) and a support spring (24); A support spring (24) is fixedly mounted on one end of the top frame (23) away from the frame plate (21), and the support spring (24) is fixedly connected to the installation box (2). An oblique through-groove (25) is provided on the installation box (2), and the oblique through-groove (25) extends to the side walls of the plurality of filter screen plates (22). The depth of the oblique through-groove (25) is less than the total thickness of the plurality of filter screen plates (22).

3. A portable low-voltage integrated distribution box according to claim 2, characterized in that: A plurality of elastic sheets (26) are fixedly mounted on the inner side of the top frame (23). In an initial state, the plurality of elastic sheets (26) are assembled to form a conical structure and block the inner cavity of the top frame (23). When the ventilation device is started, the plurality of elastic sheets (26) are separated and the inner cavity of the top frame (23) is opened.

4. A portable low-voltage integrated distribution box according to claim 3, characterized in that: The plurality of filter plates (22) are composed of a magnetic frame and a filter screen, and two adjacent filter plates (22) attract each other. The installation box (2) is provided with evenly distributed telescopic slots (3), and a stopper (31) is elastically installed in the telescopic slot (3) through a spring. The stopper (31) is designed with an inclined surface away from the frame plate (21). The filter plates (22) are provided with a docking slot (32) on the side facing the frame plate (21), and the docking slot (32) matches the stopper (31).

5. A portable low-voltage integrated distribution box according to claim 4, characterized in that: The spacing between the frame plate (21) and the telescopic slots (3) and the spacing between two adjacent telescopic slots (3) are the same and greater than the thickness of a single filter plate (22), and the spacing between the first and last telescopic slots (3) is less than the total thickness of the filter plate (22) equal to the number of telescopic slots (3).

6. A portable low-voltage integrated distribution box according to claim 1 or 5, characterized in that: It includes a replacement recoil mechanism, the replacement recoil mechanism cooperates with the layered stacking and disassembling mechanism, and the replacement recoil mechanism includes a replacement box (4) and a discharge pipe (41); The replacement box (4) is installed in the box body (1), the replacement box (4) is located below the installation box (2), and the replacement box (4) is conductively connected to the air outlet of the negative pressure dust collection device in the box body (1); A discharge pipe (41) is fixedly installed between the installation box (2) and the replacement box (4), and the discharge pipe (41) extends to the inner cavity of the installation box (2) and the replacement box (4), and the filter plate (22) close to the frame plate (21) is located directly above the discharge pipe (41); The opening area of the discharge pipe (41) is larger than the bottom area of the filter plate (22), and the opening of the discharge pipe (41) is larger than the thickness of a single filter plate (22) and smaller than the total thickness of the two filter plates (22).

7. A portable low-voltage integrated distribution box according to claim 6, characterized in that: The replacement box (4) is provided with an air outlet (42), the air outlet (42) and the opening of the installation box (2) are located on different sides of the box body (1), the replacement box (4) is provided with a drainage groove (43) on the side facing the air outlet (42), a plurality of the drainage grooves (43) are evenly arranged in the vertical direction, the drainage grooves (43) are all connected to the air outlet end of the negative pressure dust collection device through the inner cavity of the replacement box (4), and the drainage grooves (43) are used to guide the air flow to impact the filter plate (22).

8. A portable low-voltage integrated distribution box according to claim 7, characterized in that: The replacement recoil mechanism further comprises a piston plate (5), a retaining ring (52), a return spring (51), a feeding pipe (53) and an electric push rod (54); A piston plate (5) is sealingly and slidably mounted inside the replacement box (4); a return spring (51) is fixedly mounted on the side of the piston plate (5) away from the discharge pipe (41); and the return spring (51) is fixedly connected to the inner wall of the replacement box (4); A snap ring (52) is fixedly mounted on one side of the piston plate (5) close to the discharge pipe (41), and the snap ring (52) is a C-shaped structure. The snap ring (52) is used to fix the filter plate (22); The feeding pipe (53) is fixedly installed between the installation box (2) and the replacement box (4), and the feeding pipe (53) extends to the inner cavity of the installation box (2) and the replacement box (4); An electric push rod (54) is installed at the bottom of the replacement box (4). When the piston plate (5) is reset, the electric push rod (54), the retaining ring (52) and the discharge pipe (41) are on the same vertical route.

9. A portable low-voltage integrated distribution box according to claim 8, characterized in that: The inner wall of the clamping ring (52) is made of elastic material, and the clamping ring (52) forms an elastic clamp on the filter plate (22).

10. The portable low-voltage integrated distribution box according to claim 8, characterized in that: The top cross-section of the filter plate (22) is designed to be conical.

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