Modularly assembled intelligent miniature circuit breaker

Abstract

The invention discloses a modularly-assembled intelligent miniature circuit breaker, and relates to the technical field of low-voltage electric appliances. The modularly-assembled intelligent miniature circuit breaker comprises a supporting seat, the top of the supporting seat is fixedly connected with a dustproof shell, and the interior of the supporting seat is fixedly connected with a circuit breaker body. According to the modularly-assembled intelligent miniature circuit breaker, through arrangement of a dust suction port, the dust suction port is driven by rotation of a second fan blade to continuously suck raised dust swept off by a brush into the dust suction port, and the dust enters the collection box body through a second dust suction pipeline and a first dust suction pipeline to be collected, so that secondary pollution is effectively prevented; the dust removal quality and effect are enhanced, so that it is guaranteed that the circuit breaker body works within the normal temperature range, the air flow speed in the first heat dissipation window is increased while the second fan blades rotate, heat exchange between the circuit breaker body and outside cold air is further accelerated, and it is further guaranteed that the circuit breaker body works within the normal temperature range.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical appliance technology, specifically to a modularly assembled intelligent miniature circuit breaker. Background Technology

[0002] In modern power systems, intelligent miniature circuit breakers play a crucial role as key equipment for ensuring the safety of terminal power distribution. With the continuous growth of electricity demand and the increasing diversification of electrical equipment, the performance requirements for intelligent miniature circuit breakers are becoming increasingly stringent.

[0003] Citing the Chinese invention patent with publication number "CN222421838U", it includes a right-side mechanism module and a left-side sampling control module. The right-side mechanism module is equipped with an operating mechanism, a closing drive unit, and a opening drive unit. The operating mechanism can realize the opening and closing functions of the miniature circuit breaker. The closing drive unit drives the operating components to realize the automatic or remote control closing of the miniature circuit breaker, and the opening drive unit drives the operating components to realize the automatic or remote control opening of the miniature circuit breaker.

[0004] Under normal load conditions, the heat generated by existing circuit breakers can be kept within an acceptable temperature range through natural heat dissipation. However, when abnormal conditions such as overload or short circuit occur in the circuit, the current increases sharply, and the heat generated will increase rapidly and accumulate inside without being dissipated, leading to damage to the circuit breaker and causing unnecessary trouble. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a modularly assembled intelligent miniature circuit breaker to solve the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a modularly assembled intelligent miniature circuit breaker, comprising a support base, a dustproof shell fixedly connected to the top of the support base, a circuit breaker body fixedly connected inside the support base, a handle rotatably connected to the top of the circuit breaker body, a heat dissipation mechanism fixedly connected to the surface of the circuit breaker body, a connecting end fixedly connected to the surface of the circuit breaker body, a heat dissipation window mechanism fixedly connected inside the circuit breaker body, the heat dissipation window mechanism comprising a first heat dissipation window fixedly connected to the surface of the circuit breaker body, a through groove formed inside the first heat dissipation window, and a dust collection mechanism fixedly connected inside the circuit breaker body, the dust collection mechanism being fixedly connected to the bottom of the first heat dissipation window; The ventilation window mechanism includes: The first slider is slidably connected inside the circuit breaker body; A rotating slide bar is rotatably connected to the bottom of the first slider. A rack is fixedly connected to the surface of the first heat dissipation window. The rotating slide bar is engaged with the first heat dissipation window and slidably connected inside the first heat dissipation window.

[0007] Preferably, the heat dissipation mechanism includes an air outlet duct, which is fixedly connected to the surface of the dustproof shell. The dustproof shell is made of polycarbonate, which has a much lower density than ordinary metal materials. This makes it easier to handle, install, and maintain during installation and use, reducing the labor intensity of workers and minimizing the load on the installation foundation and support structure, especially in applications requiring frequent movement or with strict weight requirements. Furthermore, using engineering plastics effectively controls product costs and enhances the product's market competitiveness while meeting the basic performance requirements of the circuit breaker. The air outlet duct is internally fixedly connected to a... A small motor has a first fan blade fixedly connected to its internal output shaft. Four air outlet pipes are evenly distributed on the surface of the dustproof housing. A heat-conducting plate, model Tflex600, is fixedly connected to the surface of the circuit breaker body. This heat-conducting plate has a thermal conductivity of 2-6 W / (m·K) or even higher, allowing for rapid and effective heat transfer from the heat source. This meets the heat dissipation requirements of the miniature circuit breaker during normal operation or overload. It also fits tightly against the surfaces of the heating elements and heat dissipation components within the circuit breaker, filling tiny gaps, reducing thermal resistance, and improving thermal conductivity. Good contact is achieved even on irregular surfaces. This effectively prevents electrical short circuits, ensuring the safe operation of the circuit breaker. Furthermore, it maintains stable performance within a temperature range of -40℃ to 200℃, adapting to different working environments. A temperature detection device is fixedly connected inside the circuit breaker body.

[0008] Preferably, the heat dissipation window mechanism further includes a limiting rod, which is fixedly connected to the inside of the circuit breaker body, and the first slider is slidably connected to the surface of the limiting rod, with a sliding handle fixedly connected to the surface of the first slider.

[0009] Preferably, a second heat dissipation window is fixedly connected to the surface of the circuit breaker body, the surface of the second heat dissipation window is provided with a groove, and a sliding handle is slidably connected to the inside of the second heat dissipation window, and a through groove is provided inside the second heat dissipation window.

[0010] Preferably, a first dust suction pipe is fixedly connected inside the second heat dissipation window, a second dust suction pipe is fixedly connected to the surface of the first dust suction pipe, and a dust suction port is fixedly connected to the surface of the second dust suction pipe. There are two first dust suction pipes, and the two first dust suction pipes are symmetrically distributed about the axis of the rotating slide rod.

[0011] Preferably, a brush is fixedly connected to the surface of the rotating slide rod. The brush is made of carbon fiber anti-static bristles. From a safety perspective, during circuit breaker operation, internal components are prone to generating static electricity due to friction. Carbon fiber can quickly conduct away static electricity, avoiding discharge phenomena caused by static electricity accumulation, preventing short circuits, open circuits, and other faults, and ensuring the stable operation of the power system. In terms of cleaning efficiency, the fine and soft carbon fiber bristles of the brush can penetrate into the narrow gaps and complex structures inside the circuit breaker, efficiently adsorbing dust, debris, and other impurities, ensuring the cleanliness of critical parts, maintaining good heat dissipation and electrical performance. At the same time, the carbon fiber material gives the brush excellent wear resistance and chemical stability. Facing frequent cleaning operations, it is not easily worn and can maintain its cleaning ability for a long time. At the same time, it can resist the corrosion of various chemicals and is not afraid of complex environments, providing long-lasting and reliable cleaning protection for the circuit breaker, extending the service life of the equipment, and reducing maintenance costs. The brush is set between the through slots opened in the first heat dissipation window, and the surface of the dustproof shell also has through slots. The sliding handle is also slidably connected in the through slots opened in the dustproof shell.

[0012] Preferably, the dust collection mechanism includes a spring, one end of which is fixedly connected to the inside of the circuit breaker body, and a fixing plate is fixedly connected to the other end of the spring, the fixing plate being slidably connected to the inside of the circuit breaker body.

[0013] Preferably, the dust collection mechanism further includes a collection box, which is slidably connected to the inside of the circuit breaker body. A first dust suction pipe is sleeved on the top of the collection box. The collection box is movably connected to the top of the fixed plate. A pressing block is fixedly connected to the top of the collection box. A second fan blade is rotatably connected to the inside of the collection box. A handle is fixedly connected to the surface of the collection box.

[0014] This invention provides a modularly assembled intelligent miniature circuit breaker. It has the following advantages: 1. This modularly assembled intelligent miniature circuit breaker, by setting a first heat dissipation window and a second heat dissipation window, enables heat exchange between the air inside and outside the circuit breaker body. Hot air can be discharged through the heat dissipation window and exchange heat with the outside cold air, continuously circulating to quickly remove heat and prevent heat accumulation inside. This effectively reduces the internal temperature of the circuit breaker body. Compared with a circuit breaker body without heat dissipation windows, it expands the heat dissipation area, allowing heat to be dissipated more directly and quickly to the outside of the circuit breaker body. This avoids the problem of heat not being dissipated due to overload or short circuit, thus ensuring that the circuit breaker body operates within the normal temperature range.

[0015] 2. This modularly assembled intelligent miniature circuit breaker, by incorporating a dustproof housing, effectively prevents dust, debris, and other particulate matter from the external environment from entering the circuit breaker and adhering to the surface of electrical components, thus affecting the heat dissipation of the circuit breaker itself. Furthermore, the inclusion of a first fan blade actively drives airflow, accelerating the airflow speed inside the dustproof housing, significantly improving heat dissipation efficiency. This allows the heat generated during circuit breaker operation and the heat conducted to the dustproof housing through heat-conducting plates to be quickly dissipated into the surrounding environment, ensuring that the internal temperature of the circuit breaker remains within a safe range. Additionally, it can blow some dust out of the dustproof housing, further optimizing the working environment of the circuit breaker and ensuring that it operates within its normal temperature range.

[0016] 3. This modularly assembled intelligent miniature circuit breaker uses brushes on the surfaces of the first and second heat dissipation windows. By moving the sliding handle and rotating the slide rod, the brushes are rotated to remove dust from the heat dissipation window surfaces in a timely manner, preventing dust accumulation and blockage. This ensures that air can flow smoothly through the heat dissipation windows, allowing the heat inside the circuit breaker body to be effectively dissipated to the external environment, maintaining good heat dissipation performance, thereby improving heat dissipation efficiency and ensuring that the circuit breaker body operates within the normal temperature range.

[0017] 4. This modularly assembled intelligent miniature circuit breaker features a dust extraction port. The rotation of the second fan blade drives the port to continuously draw in dust swept up by the brush. This dust is then collected inside the collection box via the second and first dust extraction pipes, preventing dust from flying around and effectively preventing secondary pollution. This enhances the quality and effectiveness of dust removal, ensuring the circuit breaker operates within its normal temperature range. Simultaneously, the rotation of the second fan blade accelerates the airflow inside the first heat dissipation window, further speeding up heat exchange between the circuit breaker and the outside cold air, thus further ensuring the circuit breaker operates within its normal temperature range. Attached Figure Description

[0018] Figure 1 This is a front-view stereoscopic structural diagram of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the back side of the present invention; Figure 3 This is a cross-sectional schematic diagram of the dustproof shell of the present invention; Figure 4 For the present invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a three-dimensional structural diagram of the circuit breaker of the present invention; Figure 6 This is a cross-sectional schematic diagram of the circuit breaker of the present invention; Figure 7 For the present invention Figure 6Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the heat dissipation window mechanism of the present invention; Figure 9 For the present invention Figure 8 Enlarged diagram of point C in the middle.

[0019] In the diagram: 1. Support base; 2. Dustproof shell; 3. Handle; 4. Heat dissipation mechanism; 41. First small motor; 42. First fan blade; 43. Air outlet duct; 44. Heat-conducting plate; 45. Temperature detection device; 5. Connection end; 6. Circuit breaker body; 7. Heat dissipation window mechanism; 71. First heat dissipation window; 72. Second heat dissipation window; 73. Sliding grip; 74. First slider; 75. Rotating slide bar; 76. Limiting rod; 77. First suction pipe; 78. Second suction pipe; 79. Suction port; 710. Brush; 8. Dust collection mechanism; 81. Collection box; 82. Fixing plate; 83. Spring; 84. Pressing block; 85. Second fan blade; 86. Handle. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.

[0022] Example 1: Please refer to Figure 1-5 The present invention provides a technical solution: a modularly assembled intelligent miniature circuit breaker, including a support base 1, a dustproof shell 2 fixedly connected to the top of the support base 1, a circuit breaker body 6 fixedly connected inside the support base 1, a handle 3 rotatably connected to the top of the circuit breaker body 6, a heat dissipation mechanism 4 fixedly connected to the surface of the circuit breaker body 6, a connection end 5 fixedly connected to the surface of the circuit breaker body 6, a heat dissipation window mechanism 7 fixedly connected inside the circuit breaker body 6, the heat dissipation window mechanism 7 including a first heat dissipation window 71, the first heat dissipation window 71 fixedly connected to the surface of the circuit breaker body 6, a through groove opened inside the first heat dissipation window 71, and a dust collection mechanism 8 fixedly connected inside the circuit breaker body 6, and the dust collection mechanism 8 fixedly connected to the bottom of the first heat dissipation window 71; The heat dissipation window mechanism 7 includes: The first slider 74 is slidably connected inside the circuit breaker body 6; A rotating slide rod 75 is rotatably connected to the bottom of the first slider 74. A rack is fixedly connected to the surface of the first heat dissipation window 71. The rotating slide rod 75 is engaged with the first heat dissipation window 71 and slidably connected inside the first heat dissipation window 71.

[0023] The heat dissipation mechanism 4 includes an air outlet duct 43, which is fixedly connected to the surface of the dustproof shell 2. A first small motor 41 is fixedly connected inside the air outlet duct 43. A first fan blade 42 is fixedly connected inside the first small motor 41 through an output shaft. There are four air outlet ducts 43, which are evenly distributed on the surface of the dustproof shell 2. A heat-conducting plate 44 is fixedly connected to the surface of the circuit breaker body 6, and a temperature detection device 45 is fixedly connected inside the circuit breaker body 6.

[0024] The heat dissipation window mechanism 7 also includes a limiting rod 76, which is fixedly connected to the inside of the circuit breaker body 6. A first slider 74 is slidably connected to the surface of the limiting rod 76, and a sliding handle 73 is fixedly connected to the surface of the first slider 74.

[0025] A second heat dissipation window 72 is fixedly connected to the surface of the circuit breaker body 6. The surface of the second heat dissipation window 72 is provided with a groove, and the sliding handle 73 is slidably connected to the inside of the second heat dissipation window 72. The inside of the second heat dissipation window 72 is provided with a through groove.

[0026] When in use, when the temperature detection device 45 detects an abnormal temperature in the circuit breaker body 6, the heat will first dissipate to the outside through the heat-conducting plate 44, the first heat dissipation window 71 and the second heat dissipation window 72. The hot air can be discharged through the heat dissipation window and exchange heat with the outside cold air, circulating continuously, thereby quickly removing the heat and preventing the heat from accumulating inside. This effectively reduces the internal temperature of the circuit breaker body 6. Compared with the circuit breaker body 6 without heat dissipation windows, the heat dissipation area is increased, allowing the heat to be dissipated to the outside of the circuit breaker body 6 more directly and quickly, avoiding the problem of heat generated by overload or short circuit not being able to dissipate. Then, the first small motor 41 is started. The start of the first small motor 41 drives the first fan blade 42 to rotate through the output shaft. The rotation of the first fan blade 42 quickly dissipates the heat generated when the circuit breaker body 6 is working and the heat conducted to the inside of the dustproof shell 2 through the heat-conducting plate 44 to the surrounding environment. At the same time, it also discharges the dust inside the dustproof shell 2 to the outside of the dustproof shell 2.

[0027] By setting the first heat dissipation window 71 and the second heat dissipation window 72, heat exchange can be achieved between the air inside and outside the circuit breaker body 6. Hot air can be discharged through the heat dissipation window and exchange heat with the cold air outside, circulating continuously to quickly remove heat and prevent heat from accumulating inside. This effectively reduces the internal temperature of the circuit breaker body 6. Compared with a circuit breaker body 6 without heat dissipation windows, the heat dissipation area is increased, allowing heat to be dissipated more directly and quickly to the outside of the circuit breaker body 6. This avoids the problem of heat generated by overload or short circuit not being able to dissipate, thus ensuring that the circuit breaker body 6 operates within the normal temperature range.

[0028] By setting up the dustproof housing 2, dust, debris, and other particulate matter from the external environment are effectively prevented from entering the circuit breaker and adhering to the surface of electrical components, thus affecting the heat dissipation effect of the circuit breaker body 6. Furthermore, the first fan blade 42 is set up, and the rotation of the first fan blade 42 actively drives the airflow, accelerating the airflow speed inside the dustproof housing 2, which can significantly improve the heat dissipation efficiency. The heat generated by the circuit breaker body 6 during operation and the heat conducted to the inside of the dustproof housing 2 through the heat-conducting plate 44 are quickly dissipated to the surrounding environment, ensuring that the internal temperature of the circuit breaker is always kept within a safe range. It can also blow some dust to the outside of the dustproof housing 2, further optimizing the working environment of the circuit breaker body 6, thereby ensuring that the circuit breaker body 6 operates within the normal temperature range.

[0029] Example 2: Please refer to Figure 1-9 Based on Embodiment 1, the present invention provides the following technical solution: The second heat dissipation window 72 is fixedly connected to a first dust suction pipe 77, and a second dust suction pipe 78 is fixedly connected to the surface of the first dust suction pipe 77. A dust suction port 79 is fixedly connected to the surface of the second dust suction pipe 78. There are two first dust suction pipes 77, and the two first dust suction pipes 77 are symmetrically distributed about the axis of the rotating slide bar 75.

[0030] A brush 710 is fixedly connected to the surface of the rotating slide bar 75. The brush 710 is located between the through slots opened in the first heat dissipation window 71. The surface of the dust cover 2 is also provided with through slots. The sliding handle 73 is also slidably connected in the through slots opened in the dust cover 2.

[0031] The dust collection mechanism 8 includes a spring 83, one end of which is fixedly connected to the inside of the circuit breaker body 6, and the other end of which is fixedly connected to a fixing plate 82, which is slidably connected to the inside of the circuit breaker body 6.

[0032] The dust collection mechanism 8 also includes a collection box 81, which is slidably connected inside the circuit breaker body 6. A first dust suction pipe 77 is sleeved on the top of the collection box 81. The collection box 81 is movably connected to the top of the fixed plate 82. A pressing block 84 is fixedly connected to the top of the collection box 81. A second fan blade 85 is rotatably connected inside the collection box 81. A handle 86 is fixedly connected to the surface of the collection box 81.

[0033] In use, the sliding handle 73 is then manually slidable. The sliding handle 73 causes the first slider 74 to slide inside the first heat dissipation window 71. Simultaneously, the rotating rod 75 rotates under the meshing transmission of gears, thereby causing the brush 710 fixedly connected to the surface of the rotating rod 75 to rotate. The rotation of the brush 710 sweeps away dust from the surface of the first heat dissipation window 71, promptly removing dust and preventing dust accumulation that could clog the heat dissipation window. This ensures smooth airflow through the heat dissipation window, allowing the heat inside the circuit breaker body 6 to be effectively dissipated to the outside. In the environment, good heat dissipation performance is maintained, thereby improving heat dissipation efficiency. Then, the rotation of the second fan blade 85 drives the airflow inside the collection box 81, so that the dust suction port 79 continuously sucks in the dust swept off by the brush 710. Through the connection of the pipe, the dust is finally collected inside the collection box 81, preventing dust from flying and effectively preventing secondary pollution, enhancing the quality and effect of dust removal. In addition, the rotation of the second fan blade 85 further accelerates the heat exchange between the circuit breaker body 6 and the outside cold air, thereby further ensuring that the circuit breaker body 6 operates within the normal temperature range.

[0034] After the collection box 81 has been used for a period of time, the pressing block 84 can be pressed manually. Pressing the pressing block 84 will compress the spring 83, thereby moving the fixing plate 82 to the position of the support base 1, which will facilitate the removal of the collection box 81.

[0035] By installing brushes 710 on the surfaces of the first heat dissipation window 71 and the second heat dissipation window 72, and by moving the sliding handle 73 to drive the rotating slide rod 75 to move while simultaneously rotating the brushes 710, dust on the surface of the heat dissipation window is removed in a timely manner, preventing dust accumulation and blockage of the heat dissipation window. This ensures that air can flow smoothly through the heat dissipation window, allowing the heat inside the circuit breaker body 6 to be effectively dissipated to the external environment, maintaining good heat dissipation performance, thereby improving heat dissipation efficiency and ensuring that the circuit breaker body 6 operates within the normal temperature range.

[0036] By setting up a dust suction port 79, the rotation of the second fan blade 85 drives the dust suction port 79 to continuously suck the dust swept down by the brush 710 into its interior. The dust then enters the collection box 81 through the second dust suction pipe 78 and the first dust suction pipe 77 and is collected inside, preventing dust from flying around and effectively preventing secondary pollution. This enhances the quality and effect of dust removal, thereby ensuring that the circuit breaker body 6 operates within the normal temperature range. At the same time as the second fan blade 85 rotates, the airflow speed inside the first heat dissipation window 71 is accelerated, further accelerating the heat exchange between the circuit breaker body 6 and the outside cold air, thereby further ensuring that the circuit breaker body 6 operates within the normal temperature range.

[0037] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A modularly assembled intelligent miniature circuit breaker, including a support base (1), characterized in that: A dustproof shell (2) is fixedly connected to the top of the support base (1). A circuit breaker body (6) is fixedly connected inside the support base (1). A handle (3) is rotatably connected to the top of the circuit breaker body (6). A heat dissipation mechanism (4) is fixedly connected to the surface of the circuit breaker body (6). A connection end (5) is also fixedly connected to the surface of the circuit breaker body (6). A heat dissipation window mechanism (7) is fixedly connected inside the circuit breaker body (6). The heat dissipation window mechanism (7) includes a first heat dissipation window (71). The first heat dissipation window (71) is fixedly connected to the surface of the circuit breaker body (6). A through groove is opened inside the first heat dissipation window (71). A dust collection mechanism (8) is also fixedly connected inside the circuit breaker body (6). The dust collection mechanism (8) is fixedly connected to the bottom of the first heat dissipation window (71). The heat dissipation window mechanism (7) includes: The first slider (74) is slidably connected inside the circuit breaker body (6); A rotating slide rod (75) is rotatably connected to the bottom of the first slider (74). A rack is fixedly connected to the surface of the first heat dissipation window (71). The rotating slide rod (75) is engaged with the first heat dissipation window (71). The rotating slide rod (75) is slidably connected inside the first heat dissipation window (71).

2. The modularly assembled intelligent miniature circuit breaker according to claim 1, characterized in that: The heat dissipation mechanism (4) includes an air outlet pipe (43), which is fixedly connected to the surface of the dustproof shell (2). A first small motor (41) is fixedly connected inside the air outlet pipe (43). A first fan blade (42) is fixedly connected inside the first small motor (41) through an output shaft. There are four air outlet pipes (43), and the four air outlet pipes (43) are evenly distributed on the surface of the dustproof shell (2). A heat-conducting plate (44) is fixedly connected to the surface of the circuit breaker body (6), and a temperature detection device (45) is fixedly connected inside the circuit breaker body (6).

3. The modularly assembled intelligent miniature circuit breaker according to claim 2, characterized in that: The heat dissipation window mechanism (7) also includes a limiting rod (76), which is fixedly connected to the inside of the circuit breaker body (6). The first slider (74) is slidably connected to the surface of the limiting rod (76), and a sliding handle (73) is fixedly connected to the surface of the first slider (74).

4. The modularly assembled intelligent miniature circuit breaker according to claim 3, characterized in that: The surface of the circuit breaker body (6) is fixedly connected to a second heat dissipation window (72), the surface of the second heat dissipation window (72) is provided with a groove, and the sliding handle (73) is slidably connected to the inside of the second heat dissipation window (72), and the inside of the second heat dissipation window (72) is provided with a through groove.

5. The modularly assembled intelligent miniature circuit breaker according to claim 4, characterized in that: The second heat dissipation window (72) is fixedly connected to the inside of a first dust suction pipe (77), and a second dust suction pipe (78) is fixedly connected to the surface of the first dust suction pipe (77). A dust suction port (79) is fixedly connected to the surface of the second dust suction pipe (78). There are two first dust suction pipes (77), and the two first dust suction pipes (77) are symmetrically distributed about the axis of the rotating slide bar (75).

6. The modularly assembled intelligent miniature circuit breaker according to claim 5, characterized in that: A brush (710) is fixedly connected to the surface of the rotating slide bar (75). The brush (710) is located between the through slots opened in the first heat dissipation window (71). The surface of the dust cover (2) is also provided with through slots. The sliding handle (73) is also slidably connected in the through slots opened in the dust cover (2).

7. The modularly assembled intelligent miniature circuit breaker according to claim 6, characterized in that: The dust collection mechanism (8) includes a spring (83), one end of which is fixedly connected to the inside of the circuit breaker body (6), and the other end of which is fixedly connected to a fixing plate (82), which is slidably connected to the inside of the circuit breaker body (6).

8. The modularly assembled intelligent miniature circuit breaker according to claim 7, characterized in that: The dust collection mechanism (8) also includes a collection box (81), which is slidably connected to the inside of the circuit breaker body (6). A first dust suction pipe (77) is sleeved on the top of the collection box (81). The collection box (81) is movably connected to the top of the fixed plate (82). A pressing block (84) is fixedly connected to the top of the collection box (81). A second fan blade (85) is rotatably connected inside the collection box (81). A handle (86) is fixedly connected to the surface of the collection box (81).

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