Direct-current micro-grid grid-connected inverter

Abstract

The invention relates to the technical field of grid-connected inverters, and discloses a direct-current micro-grid grid-connected inverter which comprises a grid-connected inverter body and further comprises a dust collection component, the dust collection component comprises a fixing frame, the top of the fixing frame is fixedly connected with the bottom of the grid-connected inverter body, the bottom of the fixing frame is fixedly connected with a motor, and the motor is fixedly connected with the dust collection component. The output end of the motor is fixedly connected with a fan blade frame, and the bottom of the fan blade frame is rotationally connected with a cylindrical frame. The dust collection component is arranged on the surface of the grid-connected inverter, dust in the grid-connected inverter is adsorbed and collected through the dust collection component, it is avoided that dust enters the grid-connected inverter and then is accumulated in the grid-connected inverter, heat dissipation is affected, the dust collection component pushes the separation component to rotate during rotation, the collected dust is treated through the separation component, and the dust collection efficiency is improved. Dust is prevented from being accumulated in the separation part to influence the treatment effect, the separation part drives the exhaust part to perform opening and closing operation during rotation, and gas of the dust collection part is discharged during opening.

Description

Technical Field

[0001] The present invention relates to the technical field of grid-connected inverters, and in particular to a direct current microgrid grid-connected inverter. Background Art

[0002] Photovoltaic inverter is a special inverter used in the field of solar photovoltaic power generation. It can convert the direct current generated by solar cells into alternating current energy that can be directly connected to the power grid and load through power electronic conversion technology. It is an indispensable core component in the photovoltaic system. The photovoltaic grid-connected inverter in the photovoltaic inverter serves as an interface device between photovoltaic cells and the power grid. It converts the electrical energy of photovoltaic cells into alternating current energy and transmits it to the power grid. It plays a vital role in the photovoltaic grid-connected power generation system. After the grid-connected inverter's shell is assembled, it needs to be fixed with screws. There will be gaps between the assembled shells. When the grid-connected inverter is in use, external dust can easily enter the interior of the grid-connected inverter through the gaps. After a long period of accumulation, the dust will gather on the surface of the parts inside the grid-connected inverter. When the parts inside the grid-connected inverter reach high temperature after long-term use, the accumulated dust will prevent the high temperature from dissipating, thereby affecting the service life of the grid-connected inverter. Summary of the invention

[0003] The object of the present invention is to provide a DC microgrid grid-connected inverter to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a DC microgrid grid-connected inverter, including a grid-connected inverter, and further comprising: A dust collecting component, wherein the dust collecting component comprises a fixing frame, the top of the fixing frame is fixedly connected to the bottom of the grid-connected inverter, the bottom of the fixing frame is fixedly connected to a motor, the output end of the motor is fixedly connected to a fan blade frame, and the bottom of the fan blade frame is rotatably connected to a cylindrical frame; A separation component, wherein the separation component comprises a rotating frame, an inner wall of the rotating frame is fixedly connected to the upper surface of the fan blade frame, an end of the rotating frame is fixedly connected to a limiting ring, and an end of the limiting ring is fixedly connected to a circular ring groove frame; The exhaust component comprises a through-hole frame, the through-hole frame is fixedly connected to the cylindrical frame, the inner wall of the through-hole frame is fixedly connected with a round hole plate, and the inner wall of the round hole plate is slidably connected with a round ball rod.

[0005] Furthermore, the dust collecting component includes a connecting pipe, the connecting pipe is connected to the surface of the cylindrical frame, one end of the connecting pipe away from the cylindrical frame is connected to the storage rack, and the surface of the storage rack is connected to the bent pipe rack; The upper surface of the bent pipe rack is connected to an air intake rack, and a circular hole is opened on the top of the storage rack.

[0006] Furthermore, one end of the air intake rack away from the bent pipe rack passes through the grid-connected inverter and extends to the interior of the grid-connected inverter, and the surface of the air intake rack is fixedly connected to the inner wall of the grid-connected inverter. There are four bent pipe racks, and the four bent pipe racks are arranged in a circle with the storage rack as the center.

[0007] Further, the separation component comprises a connecting rod, the end of the connecting rod is fixedly connected to the surface of the limiting ring, the end of the connecting rod away from the limiting ring is fixedly connected to the driving ring, the inner wall of the storage rack is fixedly connected to the sieve hole ring, the inner wall of the storage rack is fixedly connected to the extrusion rack, the bottom of the connecting pipe is fixedly connected to an elastic rod, the bottom of the elastic rod is fixedly connected to a lifting ring, the bottom of the lifting ring is fixedly connected to a push plate, the end of the push plate away from the lifting ring is fixedly connected to an arc plate, the bottom of the storage rack is provided with an arc hole, and the bottom of the driving ring is fixedly connected to a vertical rod; The bottom of the vertical rod is fixedly connected to a cylindrical rod, the surface of the cylindrical rod is fixedly connected to a scraper, and the end of the cylindrical rod away from the scraper is fixedly connected to a rubber pad. When the cylindrical rod rotates, the rubber pad will contact the extrusion frame and generate slight vibration, so as to clean the dust on the surface of the sieve ring by vibration.

[0008] Furthermore, the surface of the driving ring is rotatably connected to the inner wall of the circular hole, and there are two circular groove frames, which are symmetrically arranged with the limiting ring as the center, and the ends of the two circular groove frames that are away from each other are rotatably connected to the bottom of the fixed frame and the top of the cylindrical frame respectively.

[0009] Furthermore, the surface of the arc plate contacts the inner wall of the arc hole, the sieve ring is located at the connection of the storage rack close to the connecting pipe, the extrusion rack is located at one end of the storage rack close to the bending rack, and the end of the scraper away from the cylindrical rod contacts the surface of the sieve ring.

[0010] Further, the exhaust component comprises a linkage frame, the top of the linkage frame is fixedly connected to the bottom of the rotating frame, the bottom of the linkage frame is fixedly connected to a driving plate, the bottom of the driving plate is fixedly connected to a pressure ring, the top of the pressure ring is fixedly connected to a triangular plate, and the surface of the circular hole plate is fixedly connected to a spring; One end of the spring away from the circular hole disk is fixedly connected with a sealing disk, and one end of the sealing disk close to the spring is fixedly connected with the spherical rod.

[0011] Furthermore, the bottom of the pressure ring is rotatably connected to the bottom of the inner wall of the cylindrical frame, the end of the through-hole frame extends to the outer end of the cylindrical frame, the sealing disk contacts the inner wall of the through-hole frame, and the end of the spherical rod away from the sealing disk extends to the inside of the cylindrical frame.

[0012] The present invention has the following beneficial effects: The present invention provides a dust collecting component on the surface of the grid-connected inverter, and utilizes the dust collecting component to absorb and collect dust inside the grid-connected inverter, so as to prevent dust from entering the grid-connected inverter and accumulating inside the inverter to affect heat dissipation; the dust collecting component drives the separation component to rotate when rotating, and the collected dust is processed by the separation component to prevent dust from accumulating inside the separation component and affecting the processing effect; the separation component drives the exhaust component to perform an opening operation when rotating, and discharges the gas of the dust collecting component when opening.

[0013] The starting motor of the present invention drives the fan blade frame to rotate. The suction force generated by the rotation of the fan blade frame enters the interior of the storage frame through the connecting pipe. The bent pipe frame transmits the suction force to the interior of the air intake frame and then enters the interior of the grid-connected inverter. The dust inside the grid-connected inverter enters the interior of the storage frame through the suction force and is stored, thereby preventing dust from accumulating inside the grid-connected inverter and affecting the heat dissipation effect of parts. The dust entering the interior of the grid-connected inverter through the gap in the grid-connected inverter can be quickly cleaned up, thereby increasing the service life of the grid-connected inverter.

[0014] When the fan blade frame of the present invention rotates, the limit ring is driven to rotate through the rotating frame, and the limit ring is driven to rotate at the bottom of the fixed frame when rotating. When the limit ring is rotated, the driving ring is driven to rotate on the inner wall of the circular ring hole through the connecting rod when rotating. When the driving ring is rotated, it pushes the scraper to rotate inside the storage frame, and the scraper is used to clean the surface of the sieve hole ring to avoid dust accumulation on the surface of the sieve hole ring to affect the air intake effect of the connecting pipe. The sieve hole ring is used to isolate the dust inside the storage frame for storage, and the arc plate is pushed downward by the push plate when the lifting ring is pulled to move downward, so that the arc plate can be separated from the inner wall of the arc hole, so that the dust inside the storage frame can be cleaned regularly. Storing dust inside the storage frame can avoid repeated contact between dust and the grid-connected inverter.

[0015] When the rotating frame of the present invention rotates, the connection between the linkage frame and the driving plate drives the pressure ring to rotate. When the pressure ring rotates, it pushes the triangular plate to contact the surface of the spherical rod and pushes the spherical rod to move toward the inside of the through-hole frame. After the spherical rod pushes the sealing disk to separate from the inner wall of the through-hole frame, the gas generated by the fan blade frame can be discharged through the through-hole frame, thereby dissipating the adsorbed heat. After the elastic reset of the spring, the spherical disk contacts the inner wall of the through-hole frame to seal the cylindrical frame, so as to ensure that the suction force generated by the fan blade frame can enter the interior of the grid-connected inverter to process dust.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 The structure of the present invention is shown in FIG. Figure 1 ; Figure 3 The structure of the present invention is shown in FIG. Figure 2 ; Figure 4 This is a schematic diagram of the overall structure of the dust collecting component of the present invention; Figure 5 It is a schematic diagram of the overall structure of the separation component of the present invention; Figure 6 Another schematic diagram of the structure of the separation component of the present invention; Figure 7 This is a schematic diagram of the scraper structure of the present invention; Figure 8 It is a schematic diagram of the overall structure of the exhaust component of the present invention.

[0019] In the accompanying drawings, the components represented by the reference numerals are listed as follows: In the figure: 1, grid-connected inverter; 2, dust suction component; 3, separation component; 4, exhaust component; 10, fixed frame; 11, motor; 12, connecting pipe; 13, air intake frame; 14, fan blade frame; 15, cylindrical frame; 16, circular ring hole; 17, storage frame; 18, bent pipe frame; 20, rotating frame; 21, limit ring; 22, drive ring; 23, sieve hole ring; 24, connecting rod; 25, circular ring groove frame; 26, push plate; 27, arc hole; 28, lifting ring; 29, arc plate; 30, extrusion frame; 31, vertical rod; 32, cylindrical rod; 33, rubber pad; 34, scraper; 35, elastic rod; 40, connecting frame; 41, sealing disk; 42, spring; 43, pressure ring; 44, drive plate; 45, through-hole frame; 46, round ball rod; 47, triangular plate; 48, circular hole disk. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figure 1-Figure 8 As shown, the present invention is a DC microgrid grid-connected inverter, including a grid-connected inverter 1, and further including: The dust collecting component 2 includes a fixing frame 10, the top of the fixing frame 10 is fixedly connected to the bottom of the grid-connected inverter 1, the bottom of the fixing frame 10 is fixedly connected to a motor 11, the output end of the motor 11 is fixedly connected to a fan blade frame 14, and the bottom of the fan blade frame 14 is rotatably connected to a cylindrical frame 15; Separation component 3, the separation component 3 includes a rotating frame 20, the inner wall of the rotating frame 20 is fixedly connected to the upper surface of the fan blade frame 14, the end of the rotating frame 20 is fixedly connected to a limit ring 21, and the end of the limit ring 21 is fixedly connected to a circular ring groove frame 25; The exhaust component 4 includes a through-hole frame 45, which is fixedly connected to the cylindrical frame 15. A circular hole disk 48 is fixedly connected to the inner wall of the through-hole frame 45. The present invention provides a dust collecting component 2 on the surface of the grid-connected inverter 1. The dust collecting component 2 is used to absorb and collect dust inside the grid-connected inverter 1 to prevent dust from entering the grid-connected inverter 1 and accumulating inside the grid-connected inverter 1 to affect heat dissipation. The dust collecting component 2 pushes the separation component 3 to rotate when rotating, and the collected dust is processed by the separation component 3 to prevent dust from accumulating inside the separation component 3 and affecting the processing effect. The separation component 3 drives the exhaust component 4 to open and close when rotating, and discharges the gas of the dust collecting component 2 when opening. A spherical rod 46 is slidably connected to the inner wall of the circular hole disk 48.

[0022] The dust collecting component 2 includes a connecting pipe 12, the connecting pipe 12 is connected to the surface of the cylindrical frame 15, one end of the connecting pipe 12 away from the cylindrical frame 15 is connected to a storage frame 17, and the surface of the storage frame 17 is connected to a bent pipe frame 18; The upper surface of the bent pipe rack 18 is connected to the air inlet rack 13 , and a circular hole 16 is formed on the top of the storage rack 17 .

[0023] One end of the air intake frame 13 away from the bent pipe frame 18 penetrates the grid-connected inverter 1 and extends to the interior of the grid-connected inverter 1, and the surface of the air intake frame 13 is fixedly connected to the inner wall of the grid-connected inverter 1. The starting motor 11 of the present invention drives the fan blade frame 14 to rotate, and the suction generated by the rotation of the fan blade frame 14 enters the interior of the storage frame 17 through the connecting pipe 12. The bent pipe frame 18 transmits the suction force to the interior of the air intake frame 13 and then enters the interior of the grid-connected inverter 1. The dust inside the grid-connected inverter 1 will enter the interior of the storage frame 17 through the suction force for storage, so as to avoid dust accumulation inside the grid-connected inverter 1 and affect the heat dissipation effect of the parts. The dust entering the interior of the grid-connected inverter 1 through the gap in the grid-connected inverter 1 can be quickly cleaned up, thereby improving the service life of the grid-connected inverter 1. There are four bent pipe frames 18, and the four bent pipe frames 18 are arranged around the storage frame 17 as the center circle.

[0024] The separation component 3 includes a connecting rod 24, the end of which is fixedly connected to the surface of the limiting ring 21, the end of the connecting rod 24 away from the limiting ring 21 is fixedly connected to the driving ring 22, the inner wall of the storage rack 17 is fixedly connected to the sieve ring 23, the inner wall of the storage rack 17 is fixedly connected to the extrusion rack 30, the bottom of the connecting pipe 12 is fixedly connected to the elastic rod 35, the bottom of the elastic rod 35 is fixedly connected to the lifting ring 28, the bottom of the lifting ring 28 is fixedly connected to the push plate 26, the end of the push plate 26 away from the lifting ring 28 is fixedly connected to the arc plate 29, the bottom of the storage rack 17 is provided with an arc hole 27, and the bottom of the driving ring 22 is fixedly connected to the vertical rod 31; A cylindrical rod 32 is fixedly connected to the bottom of the vertical rod 31 , a scraper 34 is fixedly connected to the surface of the cylindrical rod 32 , and a rubber pad 33 is fixedly connected to one end of the cylindrical rod 32 away from the scraper 34 .

[0025] The surface of the driving ring 22 is rotatably connected to the inner wall of the circular hole 16. There are two circular groove frames 25, and the two circular groove frames 25 are symmetrically arranged with the limiting ring 21 as the center. When the fan blade frame 14 of the present invention rotates, the limiting ring 21 is driven to rotate through the rotating frame 20. When the limiting ring 21 rotates, it drives the circular groove frame 25 to rotate at the bottom of the fixed frame 10. When the limiting ring 21 rotates, it drives the driving ring 22 to rotate on the inner wall of the circular hole 16 through the connecting rod 24. When the driving ring 22 rotates, it pushes the scraper 34 to rotate inside the storage frame 17, and the scraper 34 is used to clean the surface of the sieve ring 23 , to prevent dust from accumulating on the surface of the sieve ring 23 and affecting the air intake effect of the connecting pipe 12, the sieve ring 23 is used to isolate the dust inside the storage rack 17 for storage, and when the lifting ring 28 is pulled to move downward, the arc plate 29 is pushed downward by the push plate 26, so that the arc plate 29 can be separated from the inner wall of the arc hole 27, so that the dust inside the storage rack 17 can be cleaned regularly. Storing dust inside the storage rack 17 can prevent dust from repeatedly contacting the grid-connected inverter 1, and the ends of the two annular groove frames 25 that are away from each other are rotatably connected to the bottom of the fixed frame 10 and the top of the cylindrical frame 15 respectively.

[0026] The surface of the arc plate 29 contacts the inner wall of the arc hole 27, the sieve ring 23 is located at the connection of the storage rack 17 close to the connecting pipe 12, the extrusion rack 30 is located at one end of the storage rack 17 close to the bending pipe rack 18, and the end of the scraper 34 away from the cylindrical rod 32 contacts the surface of the sieve ring 23.

[0027] The exhaust component 4 includes a linkage frame 40, the top of the linkage frame 40 is fixedly connected to the bottom of the rotating frame 20, the bottom of the linkage frame 40 is fixedly connected to a driving plate 44, the bottom of the driving plate 44 is fixedly connected to a pressure ring 43, the top of the pressure ring 43 is fixedly connected to a triangular plate 47, and the surface of the circular hole plate 48 is fixedly connected to a spring 42; One end of the spring 42 away from the circular hole disk 48 is fixedly connected to the sealing disk 41 , and one end of the sealing disk 41 close to the spring 42 is fixedly connected to the spherical rod 46 .

[0028] The bottom of the pressure ring 43 is rotatably connected to the bottom of the inner wall of the cylindrical frame 15, and the end of the through-hole frame 45 extends to the outer end of the cylindrical frame 15. When the rotating frame 20 of the present invention rotates, the pressure ring 43 is driven to rotate through the connection between the linkage frame 40 and the driving plate 44. When rotating, the pressure ring 43 pushes the triangular plate 47 to contact the surface of the spherical rod 46, and pushes the spherical rod 46 to move toward the inside of the through-hole frame 45. After the spherical rod 46 pushes the sealing disk 41 to separate from the inner wall of the through-hole frame 45, the gas generated by the fan blade frame 14 can be discharged through the through-hole frame 45, thereby dissipating the adsorbed heat. The spherical plate 48 contacts the inner wall of the through-hole frame 45 after the elastic reset of the spring 42 to seal the cylindrical frame 15, so as to ensure that the suction force generated by the fan blade frame 14 can enter the interior of the grid-connected inverter 1 to process dust. The sealing disk 41 contacts the inner wall of the through-hole frame 45, and the end of the spherical rod 46 away from the sealing disk 41 extends to the inside of the cylindrical frame 15.

[0029] When in use, a dust collecting component 2 is provided on the surface of the grid-connected inverter 1, and the dust collecting component 2 is used to absorb and collect dust inside the grid-connected inverter 1, so as to prevent dust from entering the grid-connected inverter 1 and accumulating inside the grid-connected inverter 1 to affect heat dissipation. When the dust collecting component 2 rotates, it pushes the separation component 3 to rotate, and the collected dust is processed by the separation component 3, so as to prevent dust from accumulating inside the separation component 3 and affecting the processing effect. When the separation component 3 rotates, it drives the exhaust component 4 to open and close, and discharges the gas of the dust collecting component 2 when it is opened. The starter motor 11 drives the fan blade frame 14 to rotate, and the suction force generated by the rotation of the fan blade frame 14 enters the storage rack 17 through the connecting pipe 12. The inside of the grid-connected inverter 1 is connected to the fan blade frame 14, and the curved pipe frame 18 transmits the suction force to the inside of the air intake frame 13 and then enters the inside of the grid-connected inverter 1. The dust inside the grid-connected inverter 1 will enter the inside of the storage rack 17 through the suction force for storage, so as to prevent the dust from accumulating inside the grid-connected inverter 1 and affecting the heat dissipation effect of the parts. The dust entering the inside through the gap in the grid-connected inverter 1 can be quickly cleaned up, thereby improving the service life of the grid-connected inverter 1. When the fan blade frame 14 rotates, the limit ring 21 drives the limit ring 21 to rotate through the rotating frame 20. When the limit ring 21 rotates, it drives the annular groove frame 25 to rotate at the bottom of the fixed frame 10. When the limit ring 21 rotates, it drives the drive ring 22 through the connecting rod 24. The inner wall of the annular hole 16 rotates, and the driving ring 22 pushes the scraper 34 to rotate inside the storage rack 17 during the rotation. The scraper 34 is used to clean the surface of the sieve hole ring 23 to prevent dust from accumulating on the surface of the sieve hole ring 23 and affecting the air intake effect of the connecting pipe 12. The sieve hole ring 23 is used to isolate the dust inside the storage rack 17 for storage. When the lifting ring 28 is pulled downward, the arc plate 29 is pushed downward by the push plate 26, so that the arc plate 29 can be separated from the inner wall of the arc hole 27, so as to regularly clean the dust inside the storage rack 17. Storing the dust inside the storage rack 17 can prevent the dust from repeatedly contacting the grid-connected inverter 1. When the movable frame 20 rotates, the pressure ring 43 is driven to rotate through the connection between the linkage frame 40 and the driving plate 44. When the pressure ring 43 rotates, it pushes the triangular plate 47 to contact the surface of the spherical rod 46, and pushes the spherical rod 46 to move toward the inside of the through-hole frame 45. After the spherical rod 46 pushes the sealing disk 41 to separate from the inner wall of the through-hole frame 45, the gas generated by the fan blade frame 14 can be discharged through the through-hole frame 45, thereby dissipating the adsorbed heat. After the elastic reset of the spring 42, the spherical disk 48 contacts the inner wall of the through-hole frame 45 to seal the cylindrical frame 15, so as to ensure that the suction force generated by the fan blade frame 14 can enter the interior of the grid-connected inverter 1 to deal with dust.

[0030] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A DC microgrid grid-connected inverter, comprising a grid-connected inverter (1), characterized in that: Also includes: A dust collecting component (2), the dust collecting component (2) comprising a fixing frame (10), the top of the fixing frame (10) being fixedly connected to the bottom of the grid-connected inverter (1), the bottom of the fixing frame (10) being fixedly connected to a motor (11), the output end of the motor (11) being fixedly connected to a fan blade frame (14), and the bottom of the fan blade frame (14) being rotatably connected to a cylindrical frame (15); A separation component (3), the separation component (3) comprising a rotating frame (20), the inner wall of the rotating frame (20) being fixedly connected to the upper surface of the fan blade frame (14), the end of the rotating frame (20) being fixedly connected to a limit ring (21), and the end of the limit ring (21) being fixedly connected to a circular ring groove frame (25); An exhaust component (4), the exhaust component (4) comprising a through-hole frame (45), the through-hole frame (45) being fixedly connected to a cylindrical frame (15), a round hole plate (48) being fixedly connected to an inner wall of the through-hole frame (45), and a round ball rod (46) being slidably connected to an inner wall of the round hole plate (48).

2. A DC microgrid grid-connected inverter according to claim 1, characterized in that: The dust collecting component (2) comprises a connecting pipe (12), the connecting pipe (12) being in communication with the surface of the cylindrical frame (15), one end of the connecting pipe (12) away from the cylindrical frame (15) being in communication with a storage frame (17), and the surface of the storage frame (17) being in communication with a bent pipe frame (18); The upper surface of the bent pipe rack (18) is connected to the air intake rack (13), and the top of the storage rack (17) is provided with a circular hole (16).

3. A DC microgrid grid-connected inverter according to claim 2, characterized in that: One end of the air intake rack (13) away from the bent pipe rack (18) penetrates the grid-connected inverter (1) and extends into the interior of the grid-connected inverter (1), and the surface of the air intake rack (13) is fixedly connected to the inner wall of the grid-connected inverter (1), and the number of the bent pipe racks (18) is four, and the four bent pipe racks (18) are arranged around a storage rack (17) as a central circumference.

4. A DC microgrid grid-connected inverter according to claim 3, characterized in that: The separation component (3) comprises a linkage rod (24), the end of which is fixedly connected to the surface of a limiting ring (21), the end of which is away from the limiting ring (21) being fixedly connected to a driving ring (22), the inner wall of the storage rack (17) being fixedly connected to a sieve hole ring (23), the inner wall of the storage rack (17) being fixedly connected to an extrusion rack (30), the bottom of the connecting pipe (12) being fixedly connected to an elastic rod (35), the bottom of the elastic rod (35) being fixedly connected to a lifting ring (28), the bottom of the lifting ring (28) being fixedly connected to a push plate (26), the end of which is away from the lifting ring (28) being fixedly connected to a circular arc plate (29), the bottom of the storage rack (17) being provided with a circular arc hole (27), and the bottom of the driving ring (22) being fixedly connected to a vertical rod (31); The bottom of the vertical rod (31) is fixedly connected to a cylindrical rod (32), the surface of the cylindrical rod (32) is fixedly connected to a scraper (34), and one end of the cylindrical rod (32) away from the scraper (34) is fixedly connected to a rubber pad (33).

5. A DC microgrid grid-connected inverter according to claim 4, characterized in that: The surface of the driving ring (22) is rotatably connected to the inner wall of the circular hole (16), and the number of the circular groove frames (25) is two. The two circular groove frames (25) are symmetrically arranged with the limiting ring (21) as the center, and the ends of the two circular groove frames (25) that are away from each other are rotatably connected to the bottom of the fixing frame (10) and the top of the cylindrical frame (15) respectively.

6. A DC microgrid grid-connected inverter according to claim 5, characterized in that: The surface of the arc plate (29) contacts the inner wall of the arc hole (27); the sieve ring (23) is located at a connection of the storage rack (17) close to the connecting pipe (12); the extrusion rack (30) is located at one end of the storage rack (17) close to the bending pipe rack (18); and the end of the scraper (34) away from the cylindrical rod (32) contacts the surface of the sieve ring (23).

7. A DC microgrid grid-connected inverter according to claim 6, characterized in that: The exhaust component (4) comprises a linkage frame (40), the top of the linkage frame (40) is fixedly connected to the bottom of the rotating frame (20), the bottom of the linkage frame (40) is fixedly connected to a driving plate (44), the bottom of the driving plate (44) is fixedly connected to a pressure ring (43), the top of the pressure ring (43) is fixedly connected to a triangular plate (47), and the surface of the circular hole plate (48) is fixedly connected to a spring (42); One end of the spring (42) away from the circular hole disk (48) is fixedly connected to a sealing disk (41), and one end of the sealing disk (41) close to the spring (42) is fixedly connected to a spherical rod (46).

8. A DC microgrid grid-connected inverter according to claim 7, characterized in that: The bottom of the pressure ring (43) is rotatably connected to the bottom of the inner wall of the cylindrical frame (15), the end of the through-hole frame (45) extends to the outer end of the cylindrical frame (15), the sealing disk (41) contacts the inner wall of the through-hole frame (45), and the end of the spherical rod (46) away from the sealing disk (41) extends to the inside of the cylindrical frame (15).

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