A dustproof power metering box

Abstract

This invention relates to the field of electricity metering boxes and discloses a dustproof electricity metering box, comprising an electricity metering box, a box body heat dissipation assembly on one side of the electricity metering box, the box body heat dissipation assembly including an air intake treatment box fixedly installed on one side of the electricity metering box, an air intake connecting pipe and an exhaust connecting pipe fixedly installed on one side of the air intake treatment box, one end of the air intake connecting pipe and one end of the exhaust connecting pipe communicating with the inner cavity of the electricity metering box, an air intake fan installed on the air intake connecting pipe, a rotating dust removal component is provided inside the air intake treatment box, and an ionization treatment component is provided inside the rotating dust removal component, wherein the rotating dust removal component includes a filter cylinder provided inside the air intake treatment box. In this invention, the air-cooled air is filtered once by the filter screen, and the filter holes on the filter cylinder achieve secondary filtration of the air-cooled air. At the same time, the electrostatic charge on the outer wall of the filter cylinder can adsorb and separate dust in the air, further improving the dustproof effect.

Description

Technical Field

[0001] This invention belongs to the field of electricity metering boxes, specifically a dustproof electricity metering box. Background Technology

[0002] Electricity metering boxes are core terminal devices in power systems for electricity metering, distribution protection, and data acquisition. They are widely used in residential buildings, industrial and commercial parks, mining enterprises, and new energy grid connection scenarios. According to the patent document with authorization announcement number "CN220544569U" and patent name "An Electricity Metering Box with Good Heat Dissipation," the description states that during use, the dustproof mesh is attached to the inside of the through slot. The motor inside the mounting bracket is started, causing the motor to drive the rotating shaft in the rotating assembly to rotate. A belt controls the rotation of the lead screw, causing the two fixed plates threaded on the outer surface of the lead screw to move to opposite sides until the positioning plate in the fixed plate moves to the side of the dustproof mesh, thus fixing the dustproof mesh in place. The radiator is then activated, thereby extracting hot air from inside the electricity metering box and filtering dust from the ambient temperature air entering the box using the dustproof mesh, thus maintaining good heat dissipation. However, the following defects still exist: When using air cooling, only one layer of dust filter is used to filter and clean the incoming air. The dust filtration effect of a single layer of dust filter is not good, resulting in poor dust protection for the electricity metering box. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a dustproof power metering box, which effectively solves the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a dustproof power metering box, comprising a power metering box, wherein a heat dissipation assembly is provided on one side of the power metering box; The heat dissipation assembly of the box includes an air intake treatment box fixedly installed on one side of the power metering box. An air intake connection pipe and an exhaust connection pipe are fixedly installed on one side of the air intake treatment box. One end of the air intake connection pipe and one end of the exhaust connection pipe are connected to the inner cavity of the power metering box. An air intake fan is installed on the air intake connection pipe. The air intake treatment box is equipped with a rotating dust collector, and an ionization treatment component is provided inside the rotating dust collector. The rotating dust collector includes a filter cartridge located inside the air intake treatment box, and the ionization treatment component includes a partition located inside the filter cartridge. The partition divides the inner cavity of the filter cartridge into an upper air intake treatment chamber and a lower exhaust backflush chamber. The other end of the air intake connecting pipe and the other end of the exhaust connecting pipe are respectively connected to the air intake treatment chamber and the exhaust backflush chamber. The rotating dust collector is used to perform secondary filtration of the incoming air. At the same time, the ionization treatment component causes static electricity to adhere to the outer surface of the filter cartridge, improving the dust removal effect. Meanwhile, the air entering the intake treatment chamber is ionized to form ion wind, which is destaticated after being passed into the power metering box. The exhaust air flows downward from the exhaust backflush chamber to backflush the filter cartridge.

[0005] Preferably, an end pipe is fixedly installed on the side of the air intake treatment box away from the power metering box. The end pipe is located above the filter cylinder, and a filter screen is fixedly installed at one end of the end pipe. A ash discharge port is provided at the bottom of the air intake treatment box.

[0006] Preferably, the filter cartridge is rotatably disposed inside the air intake treatment box. A rotating sealing ring is provided at one end of the filter cartridge near the power metering box. The rotating sealing ring is rotatably connected to the inner wall of the air intake treatment box near the power metering box. Filter holes are evenly opened on the filter cartridge. An insulating end plate is fixedly installed at the other end of the filter cartridge. A limiting groove is opened in the middle of the insulating end plate. An insulating toothed ring is installed on the circumferential outer wall of the insulating end plate. A sealing gasket is provided on the side of the insulating end plate away from the power metering box.

[0007] Preferably, the filter cylinder is composed of an outer electrostatic attachment cylinder and an inner insulating cylinder. The inner insulating cylinder has an annular groove at one end near the power metering box, and a metal conductive ring is provided inside the annular groove. The metal conductive ring is fixedly installed inside the outer electrostatic attachment cylinder.

[0008] Preferably, a gear is meshed below the insulating toothed ring, the gear is fixedly connected to the output shaft of the drive motor, the drive motor is installed on the outer wall of the air intake treatment box away from the power metering box, and two sealing side blocks are installed on the inner wall of the air intake treatment box, the two sealing side blocks are symmetrically arranged on both sides of the filter cartridge.

[0009] Preferably, a fixed shaft is fixedly installed at the end of the partition away from the power metering box. The end of the fixed shaft and the end of the partition are both fixedly connected to the inner wall of the air intake treatment box. A sealing gasket is provided in the circumferential direction of the partition. The fixed shaft is located inside the limiting groove, and a rotating sealing ring is provided between the fixed shaft and the limiting groove.

[0010] Preferably, electrodes are uniformly arranged on the upper surface of the partition, and a high-voltage coupling half-ring is fixedly installed at the top of the end of the partition near the power metering box. The high-voltage coupling half-ring is coaxially arranged with the filter cylinder, and the high-voltage coupling half-ring corresponds to the position of the metal conductive ring. A conductive brush is fixedly installed at the top of the high-voltage coupling half-ring, and the conductive brush contacts the inner wall of the metal conductive ring. The electrodes and the high-voltage coupling half-ring are electrically connected to the high-voltage power supply through a wire harness.

[0011] Preferably, the partition is composed of an upper ceramic substrate and a lower insulating substrate. The insulating substrate has cooling water channels inside, which are arranged in an S-shape, and both ends of the cooling water channels pass through to one end of the fixed shaft.

[0012] Preferably, a cooling water tank is fixedly installed on one side of the air intake treatment box, and two connecting pipes are installed on the cooling water tank, which are respectively connected to both ends of the cooling water channel.

[0013] Compared with the prior art, the beneficial effects of the present invention are: (1) In this invention, the air-cooled air is filtered once by the filter screen, and the air-cooled air is filtered twice by the filter holes on the filter cylinder. At the same time, the static electricity on the outer wall of the filter cylinder can adsorb and separate dust in the air, further improving the dust prevention effect and thus forming multiple dust removal and protection functions. (2) In this invention, electrodes are uniformly arranged on the upper surface of the partition plate, and the conductive brush on the high-voltage coupling half ring at the top of the partition plate contacts the metal conductive ring inside the outer electrostatic attachment cylinder, so that ion wind generation and electrostatic attachment on the outer surface of the filter cylinder can be achieved through the same high-voltage power supply, which is convenient to use. (3) In this invention, the upper and lower sides of the inner cavity of the filter cylinder are divided into an air intake treatment chamber and an exhaust backflush chamber by a partition. The air intake treatment chamber is used for air intake ionization, which facilitates the elimination of static electricity inside the power metering box and improves the accuracy of power metering. The exhaust backflush chamber is used for the flow of exhaust air, so that the exhaust air can backflush and clean the filter cylinder part that has rotated to the bottom of the partition. (4) In this invention, the partition is composed of a ceramic substrate facing the air intake chamber and an insulating substrate facing the exhaust backflush chamber. The ceramic substrate facilitates the installation of electrodes, while the insulating substrate has a cooling water channel for circulating coolant. On the one hand, it removes the heat generated by the ionization of air by the electrodes, maintains ionization stability, and ensures subsequent air cooling stability. On the other hand, it avoids the hot air in the power metering box from affecting the air intake temperature when it is discharged. Attached Figure Description

[0014] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0015] In the attached diagram: Figure 1 This is a schematic diagram of the dustproof power metering box structure of the present invention; Figure 2 This is a schematic diagram of the heat dissipation assembly structure of the housing of the present invention; Figure 3 This is a schematic diagram of the internal structure of the air intake treatment box of the present invention; Figure 4This is a schematic diagram of the filter cartridge structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the filter cartridge of the present invention; Figure 6 This is a schematic diagram of the ionization treatment device of the present invention; Figure 7 This is a schematic diagram of the partition structure of the present invention; Figure 8 This is a schematic diagram showing the positions of the intake treatment chamber and the exhaust backflush chamber of the present invention; In the diagram: 1. Electricity metering box; 2. Box heat dissipation assembly; 21. Air intake treatment box; 22. Ash discharge port; 23. Air intake connection pipe; 24. Air intake fan; 25. Exhaust connection pipe; 26. End pipe; 27. Filter screen; 28. Rotating dust collector; 281. Filter cylinder; 2811. Outer electrostatic adhesion cylinder; 2812. Inner insulating cylinder; 2813. Annular groove; 2814. Metal conductive ring; 282. Filter holes; 283. Insulating end plate; 284. Limiting groove; 285, Insulating gear ring; 29, Ionization treatment component; 291, Partition plate; 2911, Ceramic substrate; 2912, Insulating substrate; 2913, Cooling water channel; 292, Fixed shaft; 293, Electrode; 294, High-voltage coupling half ring; 295, Conductive brush; 296, Wire harness; 297, Cooling water tank; 298, Connecting pipe; 210, Gear; 211, Drive motor; 212, Sealing side block; 3, Intake treatment chamber; 4, Exhaust backflush chamber. Detailed Implementation

[0016] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0017] Example 1, by Figures 1-3 The present invention relates to a dustproof power metering box, comprising a power metering box 1, wherein a heat dissipation assembly 2 is provided on one side of the power metering box 1.

[0018] The heat dissipation assembly 2 includes an air intake treatment box 21 fixedly installed on one side of the power metering box 1. An air intake connecting pipe 23 and an exhaust connecting pipe 25 are fixedly installed on one side of the air intake treatment box 21. One end of the air intake connecting pipe 23 and one end of the exhaust connecting pipe 25 are connected to the inner cavity of the power metering box 1. An air intake fan 24 is installed on the air intake connecting pipe 23. An end pipe 26 is fixedly installed on the side of the air intake treatment box 21 away from the power metering box 1. The end pipe 26 is located above the filter cartridge 281. A filter screen 27 is fixedly installed on one end of the end pipe 26. A dust discharge port 22 is provided at the bottom of the air intake treatment box 21. A rotating dust collector 28 is provided inside the air intake treatment box 21. An ionization treatment component 29 is provided inside the rotating dust collector 28.

[0019] Depend on Figures 4-5 The rotating dust collector 28 includes a filter cartridge 281 disposed inside the air intake treatment box 21. The filter cartridge 281 is rotatably disposed inside the air intake treatment box 21. A rotating sealing ring is provided at the end of the filter cartridge 281 near the power metering box 1. The rotating sealing ring is rotatably connected to the inner wall of the air intake treatment box 21 near the power metering box 1. Filter holes 282 are evenly distributed on the filter cartridge 281. The filter screen 27 performs primary filtration of the air-cooled air, while the filter holes 282 on the filter cartridge 281 perform secondary filtration of the air-cooled air. At the same time, the electrostatic charge on the outer wall of the filter cartridge 281 can adsorb and separate dust in the air, further improving the dust prevention effect. An insulating end plate 283 is fixedly installed at the other end of the filter cartridge 281. A limiting groove 284 is opened in the middle of the insulating end plate 283. An insulating toothed ring 285 is installed on the circumferential outer wall of the insulating end plate 283. A sealing gasket is provided on the side of the insulating end plate 283 away from the power metering box 1. A gear 210 is meshed and connected below the insulating toothed ring 285. The gear 210 is fixedly connected to the output shaft of the drive motor 211. The drive motor 211 is installed on the outer wall of the air intake treatment box 21 away from the power metering box 1. Two sealing side blocks 212 are installed on the inner wall of the air intake treatment box 21. The two sealing side blocks 212 are symmetrically arranged on both sides of the filter cartridge 281. The filter cartridge 281 is composed of an outer electrostatic attachment cartridge 2811 and an inner insulating cartridge 2812. An annular groove 2813 is provided at one end of the inner insulating cartridge 2812 near the power metering box 1. A metal conductive ring 2814 is provided inside the annular groove 2813. The metal conductive ring 2814 is fixedly installed inside the outer electrostatic attachment cartridge 2811.

[0020] Depend on Figures 6-7The ionization treatment component 29 includes a partition 291 disposed inside the filter cartridge 281. A fixed shaft 292 is fixedly installed at the end of the partition 291 away from the power metering box 1. The ends of the fixed shaft 292 and the partition 291 are both fixedly connected to the inner wall of the air intake treatment box 21. A sealing gasket is provided around the partition 291. The fixed shaft 292 is disposed inside the limiting groove 284, and a rotating sealing ring is provided between the fixed shaft 292 and the limiting groove 284. Electrodes 293 are uniformly disposed on the upper surface of the partition 291. A high-voltage coupling half-ring 294 is fixedly installed at the top of the end of the partition 291 near the power metering box 1. The high-voltage coupling half-ring 294 and the filter cartridge 281 are connected. 1. The high-voltage coupling half-ring 294 and the metal conductive ring 2814 are coaxially arranged, and the high-voltage coupling half-ring 294 is correspondingly positioned. A conductive brush 295 is fixedly installed at the top of the high-voltage coupling half-ring 294. The conductive brush 295 contacts the inner wall of the metal conductive ring 2814. The electrode 293 and the high-voltage coupling half-ring 294 are electrically connected to the high-voltage power supply through the wire harness 296. The electrode 293 is evenly arranged on the upper surface of the partition 291. At the same time, the conductive brush 295 on the high-voltage coupling half-ring 294 at the top of the partition 291 contacts the metal conductive ring 2814 on the inner side of the outer electrostatic attachment cylinder 2811. Thus, the same high-voltage power supply can be used to realize the generation of ion wind and electrostatic attachment on the outer surface of the filter cylinder 281, which is convenient to use. The partition 291 is composed of an upper ceramic substrate 2911 and a lower insulating substrate 2912. The insulating substrate 2912 has a cooling water channel 2913 inside, which is S-shaped. Both ends of the cooling water channel 2913 pass through to one end of the fixed shaft 292. A cooling water tank 297 is fixedly installed on one side of the air intake treatment chamber 21. Two connecting pipes 298 are installed on the cooling water tank 297, which are respectively connected to both ends of the cooling water channel 2913. The partition 291 is composed of a ceramic substrate 2911 facing the air intake treatment chamber 3 and an insulating substrate 2912 facing the exhaust backflush chamber 4. The ceramic substrate 2911 facilitates the installation of the electrode 293, while the insulating substrate 2912 has a cooling water channel 2913 for circulating coolant. On the one hand, it removes the heat generated by the ionization of air by the electrode 293, maintaining ionization stability and ensuring subsequent air cooling stability. On the other hand, it prevents the hot air in the power metering box 1 from affecting the intake air temperature.

[0021] Depend on Figure 8As shown, the partition 291 divides the inner cavity of the filter cylinder 281 into an upper air intake treatment chamber 3 and a lower exhaust backflush chamber 4. The other end of the air intake connecting pipe 23 and the other end of the exhaust connecting pipe 25 are connected to the air intake treatment chamber 3 and the exhaust backflush chamber 4, respectively. The partition 291 divides the upper and lower sides of the inner cavity of the filter cylinder 281 into the air intake treatment chamber 3 and the exhaust backflush chamber 4. The air intake treatment chamber 3 is used for air intake ionization, which facilitates the elimination of static electricity inside the power metering box 1 and improves the accuracy of power metering in the power metering box 1. The exhaust backflush chamber 4 is used for the flow of exhaust air, so that the exhaust air can backflush and clean the part of the filter cylinder 281 that has rotated to the lower part of the partition 291.

[0022] Working principle: When in use, the cooling water tank 297 is first turned on, and then the pump inside drives the coolant to flow from one of the connecting pipes 298 into the S-shaped cooling water channel 2913 in the insulating substrate 2912, and then flows back to the cooling water tank 297 for cooling. During the circulation of the coolant, the partition 291 is cooled as a whole. On the one hand, it removes the heat generated by the ionization of air by the electrode 293, maintains the stability of ionization and ensures the stability of subsequent air cooling. On the other hand, it avoids the hot air in the power metering box 1 from affecting the air intake temperature when it is discharged. When the drive motor 211 is turned on, the drive gear 210 rotates. The gear 210 meshes with the insulating gear ring 285, thereby driving the filter cartridge 281 to rotate. At the same time, the circuit switch of the high-voltage power supply is turned on, energizing each electrode 293 and the high-voltage coupling half-ring 294. After the electrode 293 is energized, it can ionize the air. In addition, since the conductive brush 295 on the high-voltage coupling half-ring 294 is in contact with the metal conductive ring 2814, static electricity is continuously attached to the surface of the outer static cylinder 2811 during the rotation of the filter cartridge 281. When the air passes through the filter cartridge 281, small particles in the air are adsorbed on the outer wall of the filter cartridge 281, further improving the dust removal effect. Then, the intake fan 24 is turned on, driving outside air to enter the space above the filter cartridge 281 in the inner cavity of the intake treatment box 21 through the end pipe 26. When it passes through the filter screen 27, the first filtration and dust removal is achieved. Then, the air enters the intake treatment chamber 3 from above the filter cartridge 281 through the filter hole 282, achieving the second filtration and dust removal. After air enters the air intake chamber 3, the air is ionized by the electrode 293 to form an ion wind. The low-temperature ion wind enters the power metering box 1 through the air intake connection pipe 23. On the one hand, it cools down the inside of the power metering box 1, and on the other hand, it eliminates the static electricity inside the power metering box 1, thus improving the accuracy of power metering. After the new air enters the electricity metering box 1, the original air in the electricity metering box 1 is forced into the exhaust backflush chamber 4 through the exhaust connection pipe 25, and then flows downward to backflush and clean the filter cartridge 281 part that has rotated to the bottom of the partition 291. The falling dust is discharged from the ash discharge port 22.

[0023] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0024] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A dustproof electric energy metering box, comprising an electric energy metering box (1), characterized in that: A heat dissipation assembly (2) is provided on one side of the power metering box (1). The heat dissipation assembly (2) includes an air intake treatment box (21) fixedly installed on one side of the power metering box (1). An air intake connection pipe (23) and an exhaust connection pipe (25) are fixedly installed on one side of the air intake treatment box (21). One end of the air intake connection pipe (23) and one end of the exhaust connection pipe (25) are connected to the inner cavity of the power metering box (1). An air intake fan (24) is installed on the air intake connection pipe (23). The air intake treatment box (21) is equipped with a rotating dust collector (28), and an ionization treatment component (29) is provided on the inner side of the rotating dust collector (28). The rotating dust collector (28) includes a filter cartridge (281) located inside the air intake treatment box (21), and the ionization treatment component (29) includes a partition (291) located inside the filter cartridge (281). The partition (291) divides the inner cavity of the filter cartridge (281) into an upper air intake treatment chamber (3) and a lower exhaust backflush chamber (4). The other end of the air intake connecting pipe (23) and the other end of the exhaust connecting pipe (25) are respectively connected to the air intake treatment chamber (3) and the exhaust backflush chamber (4). The rotating dust removal component (28) is used to perform secondary filtration of the incoming air. At the same time, the ionization treatment component (29) causes static electricity to be attached to the outer surface of the filter cartridge (281), which ionizes the air entering the air intake treatment chamber (3) to form an ion wind. After being introduced into the power metering box (1), the static electricity is removed. The exhaust air flows downward from the exhaust backflush chamber (4) to backflush the filter cartridge (281).

2. The dustproof electric energy metering box according to claim 1, characterized in that: An end pipe (26) is fixedly installed on the side of the air intake treatment box (21) away from the power metering box (1). The end pipe (26) is located above the filter cylinder (281). A filter screen (27) is fixedly installed at one end of the end pipe (26). A ash discharge port (22) is provided at the bottom of the air intake treatment box (21).

3. The dustproof electric energy metering box according to claim 1, characterized in that: The filter cylinder (281) is rotatably disposed inside the air intake treatment box (21). A rotating sealing ring is provided at one end of the filter cylinder (281) near the power metering box (1). The rotating sealing ring is rotatably connected to the inner wall of the air intake treatment box (21) near the power metering box (1). Filter holes (282) are evenly opened on the filter cylinder (281). An insulating end plate (283) is fixedly installed at the other end of the filter cylinder (281). A limiting groove (284) is opened in the middle of the insulating end plate (283). An insulating toothed ring (285) is installed on the circumferential outer wall of the insulating end plate (283). A sealing gasket is provided on the side of the insulating end plate (283) away from the power metering box (1).

4. The dustproof electric energy metering box according to claim 3, characterized in that: The filter cylinder (281) is composed of an outer electrostatic attachment cylinder (2811) and an inner insulating cylinder (2812). An annular groove (2813) is provided at one end of the inner insulating cylinder (2812) near the power metering box (1). A metal conductive ring (2814) is provided inside the annular groove (2813). The metal conductive ring (2814) is fixedly installed inside the outer electrostatic attachment cylinder (2811).

5. The dustproof electric energy metering box according to claim 3, characterized in that: The insulating toothed ring (285) is meshed with a gear (210) below it. The gear (210) is fixedly connected to the output shaft of the drive motor (211). The drive motor (211) is installed on the outer wall of the air intake treatment box (21) away from the power metering box (1). Two sealing side blocks (212) are installed on the inner wall of the air intake treatment box (21). The two sealing side blocks (212) are symmetrically arranged on both sides of the filter cartridge (281).

6. The dustproof electric energy metering box according to claim 1, characterized in that: A fixed shaft (292) is fixedly installed at the end of the partition (291) away from the power metering box (1). The end of the fixed shaft (292) and the end of the partition (291) are both fixedly connected to the inner wall of the air intake treatment box (21). A sealing gasket is provided on the circumference of the partition (291). The fixed shaft (292) is located inside the limiting groove (284), and a rotating sealing ring is provided between the fixed shaft (292) and the limiting groove (284).

7. The dustproof electric energy metering box according to claim 6, characterized in that: Electrodes (293) are uniformly arranged on the upper surface of the partition (291). A high-voltage coupling half-ring (294) is fixedly installed on the top of one end of the partition (291) near the power metering box (1). The high-voltage coupling half-ring (294) is coaxially arranged with the filter cylinder (281), and the high-voltage coupling half-ring (294) corresponds to the position of the metal conductive ring (2814). A conductive brush (295) is fixedly installed on the top of the high-voltage coupling half-ring (294). The conductive brush (295) contacts the inner wall of the metal conductive ring (2814). The electrodes (293) and the high-voltage coupling half-ring (294) are electrically connected to the high-voltage power supply through the wire harness (296).

8. The dustproof electric energy metering box according to claim 6, characterized in that: The partition (291) is composed of an upper ceramic substrate (2911) and a lower insulating substrate (2912). The insulating substrate (2912) has a cooling water channel (2913) inside. The cooling water channel (2913) is arranged in an S-shape, and the two ends of the cooling water channel (2913) respectively pass through to one end of the fixed shaft (292).

9. The dustproof electric energy metering box according to claim 8, characterized in that: A cooling water tank (297) is fixedly installed on one side of the air intake treatment box (21). Two connecting pipes (298) are installed on the cooling water tank (297), and the two connecting pipes (298) are respectively connected to both ends of the cooling water channel (2913).

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