A soundproof box for a generator set and a maintenance method

Abstract

This invention belongs to the field of generator technology, specifically relating to a soundproof enclosure for generator sets. The enclosure has a hollow housing, with the generator set housed inside. The side walls of the housing are provided with a sound-absorbing layer. This invention creates a closed space inside the enclosure by adding an intake silencing structure and an exhaust silencing structure. The intake silencing structure forms an intake channel along an inclined direction through a combination of a guide plate and a mesh panel. This not only prevents external foreign objects from entering and improves the cleanliness of the enclosure, but also blocks noise diffusion. The mesh panel of the upper blocking component is connected to the guide plate of the lower blocking component. The silencing filter layer is located inside the housing of the blocking component. When the generator set starts, noise leakage is effectively suppressed. This invention also discloses a maintenance method for the soundproof enclosure for generator sets, which can effectively shorten maintenance time and improve maintenance efficiency.

Description

Technical Field

[0001] This invention belongs to the field of generator technology, specifically relating to a soundproof enclosure for generator sets and a maintenance method thereon. Background Technology

[0002] Generator sets, as independent power generation devices, are widely used in emergency power supply scenarios such as field operations, hospitals, data centers, and residential areas. However, generator sets generate significant noise during operation, seriously disrupting the normal production and living order of people in the surrounding area.

[0003] Existing soundproof enclosures for generator sets typically reduce noise by adding a sound-absorbing layer inside the enclosure. The working principle involves absorbing noise through porous sound-absorbing material. However, generator sets require air intake and heat dissipation during operation, and noise can diffuse through the airflow channels, thus reducing the effectiveness of the soundproof enclosure.

[0004] In addition, when used in outdoor environments, especially in windy and sandy Gobi and desert environments, the filter cloth layer at the air inlet of the silent box needs to be replaced frequently, and each replacement takes a long time. During this period, the box needs to be kept open, which leads to a rapid increase in contamination inside the box and increases the workload of subsequent cleaning. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a soundproof enclosure for generator sets and a maintenance method thereon. By setting an intake silencer structure and an exhaust silencer structure, the soundproof enclosure's noise reduction effect is improved, and the noise pollution generated by the generator set during operation is reduced.

[0006] The specific technical solution adopted in this invention is as follows:

[0007] A soundproof enclosure for a generator set includes a hollow housing with the generator set housed within it. The housing sidewalls are lined with a sound-absorbing layer, and the air inlet end of the housing has an air intake silencing structure mounted on the door. The air intake silencing structure comprises a blocking component and a silencing filter layer. The blocking component is a hollow structure with an L-shaped cross-section. The upper surface of the blocking component is a guide plate, and the lower surface is a mesh panel. Multiple blocking components are arranged adjacent to each other, with the gaps between adjacent blocking components forming an air intake channel. The mesh panel of the upper blocking component is connected to the guide plate of the lower blocking component. The silencing filter layer is located inside the housing of the blocking component.

[0008] The guide plate includes a horizontal guide section, an inclined guide section, and a vertical guide section. The plane containing the lower edge of the vertical guide section on the upper barrier assembly is lower than the plane containing the horizontal guide section of the lower barrier assembly.

[0009] The mesh panel includes an outer inclined portion and an inner inclined portion, the outer inclined portion and the inner inclined portion are in an L-shaped structure, the outer inclined portion is arranged parallel to the inclined guide portion, and the inner inclined portion is connected to the horizontal guide portion and abuts against the sound-absorbing filter layer.

[0010] The exhaust end of the enclosure is provided with an exhaust silencing structure, which is located at the output end of the cooling fan of the generator set. The exhaust silencing structure includes a sealing plate and an air guide shroud on the sealing plate. The sealing plate and the exhaust window of the enclosure form a flow stabilizing cavity.

[0011] The flow stabilizing cavity is provided with a set of spaced flow stabilizing plates. The length direction of the flow stabilizing plates is parallel to the flow direction of the airflow in the flow stabilizing cavity, and the windward end of the flow stabilizing plates is provided with a guide cone surface.

[0012] The air guide hood is provided with a set of spaced air guide plates, and the air guide direction of the air guide plates is inclined upward.

[0013] The exhaust window is provided with an exhaust guide plate, and multiple exhaust guide plates are arranged at intervals. The air guiding direction of the exhaust guide plate is inclined downward.

[0014] The noise-absorbing filter layer includes a filter cloth layer and a replacement mechanism. The replacement mechanism is located inside the door. The filter cloth layer is located between the replacement mechanism and the blocking assembly. The replacement mechanism includes a filter cloth roller and a clamping conveyor belt mounted on the frame of the door. Two sets of clamping conveyor belts are symmetrically arranged on the left and right sides of the frame of the door in the vertical direction. Each set of clamping conveyor belts includes an insertion fixing belt and a compression fixing belt. The filter cloth layer is clamped between the insertion fixing belt and the compression fixing belt.

[0015] The filter cloth is drawn from the filter cloth roller and clamped by the clamping conveyor belt to form a filter cloth layer. A support grid is provided on the side of the box door facing the inside of the box, and the support grid is placed behind the filter cloth layer.

[0016] The clamping conveyor belt is further provided on the lower side of the clamping conveyor belt. The clamping conveyor belt includes a first clamping belt and a second clamping belt. The clamping gaps of the first clamping belt and the second clamping belt are aligned with the clamping gaps of the clamping conveyor belt.

[0017] The upper end of the insertion fixing band extends beyond the end of the compression fixing band. An insertion assembly is provided on the surface of the insertion fixing band. The insertion assembly includes a connecting shell that is fixedly connected to the surface of the insertion fixing band. An insertion lever is provided inside the connecting shell. A receiving groove is provided on the connecting shell. The insertion lever is hinged in the receiving groove. An insertion pin is provided at the insertion end of the insertion lever. A return spring is provided between the compression end of the insertion lever and the connecting shell. The return spring pushes the compression end of the insertion lever to extend out of the receiving groove.

[0018] The surface of the compression fixing belt abuts against and presses against the compression end of the insertion lever, causing the insertion end of the insertion lever to swing out of the receiving groove and insert the insertion needle into the filter cloth layer.

[0019] A maintenance method for a generator set soundproof enclosure, based on the generator set soundproof enclosure, includes the following steps:

[0020] S1. Tear lines are set on the filter cloth at the designed interval, and the filter cloth is wound into the filter cloth roller to form a storage capacity;

[0021] S2. The end of the filter cloth is placed at the entrance of the clamping gap of the clamping conveyor belt. The clamping conveyor belt is started to pull the filter cloth down and cover the support grid plate to form a filter cloth layer for filtering the air intake of the generator set.

[0022] S3. When the filter cloth layer needs to be replaced and maintained, the generator set is stopped, the waste port located at the bottom of the box door is opened, and the clamping conveyor belt and the traction conveyor belt are started. The clamping conveyor belt holds the new filter cloth, and the old filter cloth enters the traction conveyor belt. When the tear line at the junction of the new and old filter cloth is between the clamping conveyor belt and the traction conveyor belt, the clamping conveyor belt stops rotating, and the traction conveyor belt continues to rotate to tear the filter cloth from the tear line and discharge the old filter cloth from the waste port, thus completing the maintenance.

[0023] The beneficial effects of this invention are:

[0024] This invention creates a closed space inside the housing by adding an intake silencing structure and an exhaust silencing structure. The intake silencing structure forms an intake channel along an inclined direction by combining a guide plate and a mesh panel. The mesh panel can block the intrusion of foreign objects and improve the cleanliness of the housing. It can also partially block and reflect the diffusion of noise. The mesh panel of the upper blocking component is connected to the guide plate of the lower blocking component. The silencing filter layer is set inside the housing of the blocking component. When the generator set starts, the noise leakage is effectively suppressed. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention;

[0026] Figure 2 for Figure 1 An enlarged schematic diagram of part A in the middle;

[0027] Figure 3 for Figure 1 A diagram showing the view from the right.

[0028] Figure 4 This is a top-view cross-sectional diagram of the present invention;

[0029] Figure 5 A structural diagram of the replacement mechanism;

[0030] Figure 6 This is a schematic diagram of the structure of the clamping conveyor belt and the pulling conveyor belt on the side.

[0031] Figure 7 This is a schematic diagram of the plug-in assembly.

[0032] In the attached diagram, 1 is the housing, 2 is the door, 3 is the sound-absorbing filter layer, 4 is the guide plate, 401 is the horizontal guide section, 402 is the inclined guide section, 403 is the vertical guide section, 5 is the mesh panel, 501 is the outward inclined section, 502 is the inward inclined section, 6 is the air intake channel, 7 is the cooling fan, 8 is the sealing plate, 9 is the air guide hood, 10 is the flow stabilizer plate, 11 is the air guide plate, 12 is the exhaust guide plate, 30 is the clamping conveyor belt, 31 is the pulling conveyor belt, 301 is the plug-in fixing belt, 302 is the extrusion fixing belt, 303 is the connecting shell, 304 is the plug-in lever, 305 is the filter cloth roller, and 306 is the support grid plate. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0034] Specific implementation examples Figure 1 As shown, the present invention provides a soundproof enclosure for a generator set. The soundproof enclosure has a hollow housing 1, and the generator set is installed inside the housing 1. The side wall of the housing 1 is provided with a sound-absorbing layer. The air intake end of the housing 1 is provided with an air intake silencing structure, which is installed on the door 2. The air intake silencing structure includes a blocking component and a silencing filter layer 3. The blocking component is a hollow structure with an L-shaped cross-section. The upper surface of the blocking component is a guide plate 4, and the lower surface of the blocking component is a mesh panel 5. Multiple sets of blocking components are arranged adjacent to each other, and the gap between adjacent blocking components forms an air intake channel 6. The mesh panel 5 of the upper blocking component is connected to the guide plate 4 of the lower blocking component. The silencing filter layer 3 is installed inside the housing 1 of the blocking component.

[0035] The air intake silencing structure of the present invention is installed on the door 2 of the housing 1, so that it can open and close together with the door 2. The installed blocking components are formed by the combination of guide plate 4 and mesh panel 5. The guide plate 4 faces the outside of the door 2 and plays a role in rain protection. An air intake channel 6 is formed between adjacent blocking components. The air intake channel 6 is inclined and has an L-shaped structure to prevent the noise of the generator set from directly passing to the outside. The sound waves are partially reflected by the guide plate 4 in the air intake channel 6, thereby consuming noise energy and reducing noise leakage.

[0036] The bottom of the container 1 of the present invention is also provided with a bottom plate, and the bottom plate is provided with a container interface to facilitate the loading and unloading of the container of the present invention.

[0037] The mesh panel 5 is set inside the air intake channel 6, which filters the air intake airflow and reflects noise waves again. The mesh panel 5 is located inside the air intake channel 6 and below the guide plate 4. With the help of the shielding of the guide plate 4, the durability of the mesh panel 5 is improved.

[0038] Furthermore, such as Figure 2 As shown, the guide plate 4 includes a horizontal guide portion 401, an inclined guide portion 402, and a vertical guide portion 403. The plane where the lower edge of the vertical guide portion 403 on the upper barrier assembly is located is lower than the plane where the horizontal guide portion 401 of the lower barrier assembly is located.

[0039] The inclined guide 402 and the vertical guide 403 form a drip edge structure and block the air intake channel 6 to face the ground, so that the noise emitted from the air intake channel faces the ground, reducing the tendency of noise to propagate to a distance.

[0040] The mesh panel 5 includes an outwardly inclined portion 501 and an inwardly inclined portion 502. The outwardly inclined portion 501 and the inwardly inclined portion 502 are in an L-shaped structure. The outwardly inclined portion 501 is arranged parallel to the inclined guide portion 402. The inwardly inclined portion 502 is connected to the horizontal guide portion 401 and abuts against the sound-absorbing filter layer 3.

[0041] The horizontal guide part 401 is connected to the inner inclined part 502 of the mesh panel 5 on the side facing the inside of the box 1, and the connection part of the two abuts against the sound-absorbing filter layer 3. The sound-absorbing filter layer 3 includes an air filter and a support rod disposed inside the box 1. The support rod is fixed to the box door 2 and is used to abut the air filter against the box door 2 and the blocking assembly.

[0042] Furthermore, such as Figure 1 and Figure 4 As shown, the exhaust end of the housing 1 is provided with an exhaust silencing structure, which is located at the output end of the cooling fan 7 of the generator set. The exhaust silencing structure includes a sealing plate 8 and an air guide shroud 9 installed on the sealing plate 8. The sealing plate 8 and the exhaust window of the housing 1 form a flow stabilizing cavity.

[0043] The generator set of the present invention is installed inside the housing 1. When the generator set is working, the cooling fan 7 starts to provide cooling for the generator set's engine. At the same time, the air intake side of the cooling fan 7 faces the side where the air intake silencer structure is located. Through the suction of the cooling fan 7, outside air enters the housing 1 through the air intake silencer structure to supply the engine and for heat dissipation.

[0044] The exhaust end of the cooling fan 7 is connected to the flow stabilization chamber. The flow stabilization chamber stabilizes the airflow before outputting it, reducing the noise generated by air turbulence.

[0045] Furthermore, such as Figure 4As shown, a set of spaced flow stabilizing plates 10 are provided in the flow stabilizing cavity. The length direction of the flow stabilizing plate 10 is parallel to the flow direction of the airflow in the flow stabilizing cavity, and a flow guide cone surface is provided on the windward end of the flow stabilizing plate 10.

[0046] The side wall of the flow stabilizer 10 is provided with a recess. When sound is reflected on the flow stabilizer 10, the recess and the flow stabilizer 10 partially reflect and consume the sound wave. At the same time, an airflow channel is formed between the flow stabilizers 10, so that the output airflow is stable and wind noise is reduced.

[0047] Furthermore, a set of spaced-apart air guide plates 11 are provided inside the air guide shroud 9, with the air guide plate 11 tilted upwards. The airflow is directed upwards by the air guide plate 11, while avoiding direct connection between the soundproof box and the flow stabilization chamber, thus preventing obstruction of sound propagation. The air guide plate 11 is hinged to the air guide shroud 9 and is connected to an opening adjustment mechanism. The opening adjustment mechanism includes a gear mounted on the hinge shaft of the air guide plate 11 and a rack driven by a telescopic cylinder. The angle of the air guide plate 11 relative to the horizontal plane is changed by the meshing transmission of the rack and gear, thereby adjusting the air output and the sound reflection angle.

[0048] The upward-pointing air guide plate 11 causes the exhaust airflow to converge upwards. After being stabilized by the flow stabilizer plate 10, the airflow is concentrated and discharged from the upper part of the exhaust window, increasing the distance to the ground and thus reducing the intensity of the airflow to the ground and preventing dust. At the same time, it can also guide some sound waves upwards to contact the sound-absorbing layer wrapped on the side wall of the housing 1, thereby dissipating the sound wave energy.

[0049] Furthermore, such as Figure 1 As shown, an exhaust guide plate 12 is provided on the exhaust window, and multiple exhaust guide plates 12 are arranged at intervals. The air guiding direction of the exhaust guide plate 12 is inclined downward.

[0050] The exhaust guide plate 12 forms a guide structure for the exhaust window, preventing rainwater from entering, and at the same time forms a grid shape to prevent foreign objects from entering the flow stabilization cavity.

[0051] Furthermore, such as Figure 5 and Figure 6 As shown, the noise-absorbing filter layer 3 includes a filter cloth layer and a replacement mechanism. The replacement mechanism is located inside the door 2. The filter cloth layer is located between the replacement mechanism and the blocking assembly. The replacement mechanism includes a filter cloth roller 305 and a clamping conveyor belt 30 mounted on the frame of the door 2. Two sets of clamping conveyor belts 30 are symmetrically arranged on the left and right sides of the frame of the door 2 in the vertical direction. Each set of clamping conveyor belts 30 includes an insertion fixing belt 301 and a compression fixing belt 302. The filter cloth layer is clamped between the insertion fixing belt 301 and the compression fixing belt 302.

[0052] The box door 2 is also provided with a maintenance port for loading the filter cloth roller 305 and a waste port for discharging the old filter cloth. The maintenance port is located at the top inside the box door 2, and the waste port is located at the side of the bottom of the box door 2, preferably on the outside of the box door 2. This way, the box door 2 can be kept closed when discharging waste, reducing pollution.

[0053] The filter cloth is drawn from the filter cloth roller 305 and clamped by the clamping conveyor belt 30 to form a filter cloth layer. A support grid plate 306 is provided on the side of the box door 2 facing the inside of the box body 1. The support grid plate 306 is placed behind the filter cloth layer. When the filter cloth layer needs to be replaced, the new filter cloth is pulled out from the filter cloth roller 305 by the rotation of the clamping conveyor belt 30. As the clamping conveyor belt 30 slides on the support grid plate 306, the inside of the box body 1 is under negative pressure after the generator set is started. The outside air passes through the filter cloth layer and enters the box body 1 for the generator set to use. The outside sand and gravel will be intercepted on the filter cloth layer. The support grid plate 306 supports the filter cloth layer to prevent the filter cloth from falling off the clamping conveyor belt 30.

[0054] Furthermore, the outer ring of the support grid plate 306 is a closed frame structure, and a sealing ring is provided on its outer ring. The opening diameter of the box door 2 is smaller than the diameter of the support grid plate 306. When the box body 1 is under negative pressure, the filter cloth layer undergoes elastic deformation and abuts against the support grid plate 306 and its surrounding sealing ring to form a seal, reducing the force on the clamping conveyor belt 30 while ensuring the sealing performance of the opening of the box door 2.

[0055] Furthermore, a tension conveyor belt 31 is also provided on the lower side of the clamping conveyor belt 30. The tension conveyor belt 31 includes a first tension belt and a second tension belt, and the clamping gaps of the first tension belt and the second tension belt are aligned with the clamping gaps of the clamping conveyor belt 30.

[0056] The filter cloth layer is simultaneously pulled and tensioned by the clamping conveyor belt 30 and the pulling conveyor belt 31, so that the filter cloth layer covers the opening of the box door 2 and is supported by the support grid plate 306 provided on the opening.

[0057] Furthermore, the upper end of the insertion fixing band 301 extends beyond the end of the compression fixing band 302. An insertion assembly is provided on the surface of the insertion fixing band 301. The insertion assembly includes a connecting shell 303 fixedly connected to the surface of the insertion fixing band 301. An insertion lever 304 is provided inside the connecting shell 303. A receiving groove is provided on the connecting shell 303. The insertion lever 304 is hinged within the receiving groove. An insertion pin is provided at the insertion end of the insertion lever 304. A return spring is provided between the compression end of the insertion lever 304 and the connecting shell 303. The return spring pushes the compression end of the insertion lever 304 out of the receiving groove. The insertion assembly effectively tensions the filter cloth layer, preventing loosening. The surface of the compression fixing band 302 abuts against and presses against the compression end of the insertion lever 304, causing the insertion end of the insertion lever 304 to swing out of the receiving groove and insert the insertion pin into the filter cloth layer.

[0058] The upper end of the insertion fixing belt 301 extends beyond the end of the compression fixing belt 302, so that the insertion components on the insertion fixing belt 301 are aligned in a straight line before contacting the compression fixing belt 302. Then, the insertion fixing belt 301 and the compression fixing belt 302 are squeezed to form a clamping gap. The belt surface of the compression fixing belt 302 abuts against the connecting shell 303, and the compression end of the insertion lever 304 extending beyond the end face of the connecting shell 303 is pressed into the receiving groove. The insertion end of the insertion lever 304 swings out of the receiving groove, so that the needle-shaped insertion needle pierces into the filter cloth layer. The compression fixing belt 302 is a mesh conveyor belt, or a channel for the insertion needle to pierce is preset on the compression fixing belt 302, so that the compression conveyor belt 302 closes and fixes the overhanging end of the insertion needle, preventing the filter cloth layer from falling off.

[0059] The insertion fixing belt 301 and the extrusion fixing belt 302 of the present invention are belt-type conveyor belts or chain conveyor belts, and a support strip is provided on one side of the clamping gap to support the belt surface or chain and prevent clamping failure.

[0060] When the compression fixing belt 302 separates from the insertion fixing belt 301, the insertion pin swings into the receiving groove by the push of the return spring. The filter cloth layer is positioned at the upper limit of the groove side. At the same time, the compression end is lifted, which partially lifts the filter cloth layer, thus effectively separating the insertion pin from the filter cloth layer, so that the filter cloth layer can smoothly enter the pulling conveyor belt 31.

[0061] The present invention also includes a maintenance method for a generator set soundproof enclosure, which, based on the generator set soundproof enclosure, includes the following steps:

[0062] S1. Tear lines are set on the filter cloth at the designed interval, and the filter cloth is wound into the filter cloth roller 305 to form a storage quantity; the tear lines are tear guide lines cut in the shape of dotted lines, so that the filter cloth can be easily broken on the tear lines.

[0063] S2. The end of the filter cloth is placed at the entrance of the clamping gap of the clamping conveyor belt 30. The clamping conveyor belt 30 is started to pull the filter cloth down and cover the support grid plate 306 to form a filter cloth layer for filtering the air intake of the generator set.

[0064] S3. When the filter cloth layer needs to be replaced and maintained, the generator set is stopped, the waste port located at the bottom of the box door is opened, and the clamping conveyor belt 30 and the pulling conveyor belt 31 are started. The clamping conveyor belt 30 clamps the new filter cloth to form a filter cloth layer, and the old filter cloth layer enters the pulling conveyor belt 31. When the tear line at the junction of the old and new filter cloth is located between the clamping conveyor belt 30 and the pulling conveyor belt 31, the clamping conveyor belt 30 stops rotating, and the pulling conveyor belt 31 continues to rotate to tear the filter cloth from the tear line and discharge the old filter cloth layer from the waste port, thus completing the maintenance.

[0065] When replacing the filter cloth, the traction conveyor belt 31 can move synchronously on both sides to quickly break off and discharge the old filter cloth layer, or the traction conveyor belt 31 can rotate a set distance on one side first to break off the filter cloth from one side first. Compared with tearing from both sides at the same time, this can reduce the stress on the filter cloth layer, avoid excessive stress on the filter cloth layer and deformation, and ensure sealing.

Claims

1. A soundproof enclosure for a generator set, the enclosure having a hollow housing (1), the generator set being installed inside the housing (1), the side walls of the housing (1) being provided with a sound-absorbing layer, characterized in that: The air intake end of the box (1) is provided with an air intake silencing structure. The air intake silencing structure is set on the box door (2). The air intake silencing structure includes a barrier component and a silencing filter layer (3). The barrier component is a hollow structure with an L-shaped cross section. The upper surface of the barrier component is a guide plate (4). The lower surface of the barrier component is a mesh panel (5). Multiple sets of barrier components are arranged adjacent to each other. The gap between adjacent barrier components forms an air intake channel (6). The mesh panel (5) of the upper barrier component is connected to the guide plate (4) of the lower barrier component. The silencing filter layer (3) is set inside the box (1) of the barrier component.

2. The soundproof enclosure for a generator set according to claim 1, characterized in that: The guide plate (4) includes a horizontal guide (401), an inclined guide (402) and a vertical guide (403). The plane where the lower edge of the vertical guide (403) on the upper barrier assembly is located is lower than the plane where the horizontal guide (401) of the lower barrier assembly is located.

3. The soundproof enclosure for a generator set according to claim 2, characterized in that: The mesh panel (5) includes an outwardly inclined portion (501) and an inwardly inclined portion (502). The outwardly inclined portion (501) and the inwardly inclined portion (502) are in an L-shaped structure. The outwardly inclined portion (501) is arranged parallel to the inclined guide portion (402). The inwardly inclined portion (502) is connected to the horizontal guide portion (401) and abuts against the sound-absorbing filter layer (3).

4. The soundproof enclosure for a generator set according to claim 1, characterized in that: The exhaust end of the housing (1) is provided with an exhaust silencing structure, which is located at the output end of the cooling fan (7) of the generator set. The exhaust silencing structure includes a sealing plate (8) and a guide shroud (9) on the sealing plate (8). The sealing plate (8) and the exhaust window of the housing (1) form a flow stabilizing cavity. A set of spaced flow stabilizing plates (10) are provided in the flow stabilizing cavity. The length direction of the flow stabilizing plate (10) is parallel to the flow direction of the airflow in the flow stabilizing cavity. A guide cone surface is provided on the windward end of the flow stabilizing plate (10).

5. A silent enclosure for a generator set according to claim 4, characterized in that: The air guide hood (9) is provided with a set of spaced air guide plates (11), and the air guide plate (11) is inclined upward.

6. A soundproof enclosure for a generator set according to claim 4, characterized in that: The exhaust window is provided with an exhaust guide plate (12), and multiple exhaust guide plates (12) are provided at intervals. The air guiding direction of the exhaust guide plate (12) is inclined downward.

7. A soundproof enclosure for a generator set according to claim 1, characterized in that: The noise-absorbing filter layer (3) includes a filter cloth layer and a replacement mechanism. The replacement mechanism is located inside the door (2). The filter cloth layer is located between the replacement mechanism and the blocking assembly. The replacement mechanism includes a filter cloth roller (305) and a clamping conveyor belt (30) located on the frame of the door (2). Two sets of clamping conveyor belts (30) are symmetrically arranged on the left and right sides of the frame of the door (2) in the vertical direction. Each set of clamping conveyor belts (30) includes an insertion fixing belt (301) and a compression fixing belt (302). The filter cloth layer is clamped between the insertion fixing belt (301) and the compression fixing belt (302).

8. A soundproof enclosure for a generator set according to claim 7, characterized in that: The filter cloth is drawn from the filter cloth roller (305) and clamped by the clamping conveyor belt (30) to form a filter cloth layer. A support grid plate (306) is provided on the side of the box door (2) facing the inside of the box body (1). The support grid plate (306) is placed on the back side of the filter cloth layer. The clamping conveyor belt (30) is further provided with a pulling conveyor belt (31) on its lower side. The pulling conveyor belt (31) includes a first pulling belt and a second pulling belt. The clamping gaps of the first pulling belt and the second pulling belt are aligned with the clamping gaps of the clamping conveyor belt (30).

9. A soundproof enclosure for a generator set according to claim 7, characterized in that: The upper end of the insertion fixing band (301) extends beyond the end of the compression fixing band (302). An insertion assembly is provided on the band surface of the insertion fixing band (301). The insertion assembly includes a connecting shell (303) fixedly connected to the band surface of the insertion fixing band (301). An insertion lever (304) is provided inside the connecting shell (303). A receiving groove is provided on the connecting shell (303). The insertion lever (304) is hinged in the receiving groove. An insertion pin is provided at the insertion end of the insertion lever (304). A return spring is provided between the compression end of the insertion lever (304) and the connecting shell (303). The return spring pushes the compression end of the insertion lever (304) to extend out of the receiving groove. The surface of the compression fixing band (302) abuts against and presses against the compression end of the insertion lever (304), causing the insertion end of the insertion lever (304) to swing out of the receiving groove and insert the insertion needle into the filter cloth layer.

10. A maintenance method for a generator set soundproof enclosure, based on the generator set soundproof enclosure as described in claim 7, characterized in that: Includes the following steps: S1. Tear lines are set on the filter cloth at the designed interval, and the filter cloth is wound into the filter cloth roller (305) to form a storage quantity; S2. The end of the filter cloth is placed at the entrance of the clamping gap of the clamping conveyor belt (30). The clamping conveyor belt (30) is started to pull down the clamping filter cloth and cover it on the support grid plate (306) to form a filter cloth layer for use in the air intake filtration of the generator set. S3. When the filter cloth layer needs to be replaced and maintained, the generator set is stopped, the waste port located at the bottom of the box door is opened, and the clamping conveyor belt (30) and the pulling conveyor belt (31) are started, so that the clamping conveyor belt (30) clamps the new filter cloth and the old filter cloth enters the pulling conveyor belt (31). When the tear line at the junction of the new and old filter cloth is between the clamping conveyor belt (30) and the pulling conveyor belt (31), the clamping conveyor belt (30) stops rotating, and the pulling conveyor belt (31) continues to rotate to tear the filter cloth from the tear line and discharge the old filter cloth from the waste port to complete the maintenance.

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