Dust filtration and noise reduction device for air inlet of power box
By installing a dust filter and noise reduction device at the air intake of the power box, dust filter cotton and rock wool are used to absorb dust, and combined with the diesel engine muffler to reduce noise, the various hazards of the power box in a dusty environment are solved, and the stable operation and noise control of the equipment are achieved.
Patent Information
- Application Number
- CN202520367803.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2035-03-04
AI Technical Summary
The lack of dust filtration devices in the power box of tracked mobile crushing equipment leads to problems such as reduced generator insulation performance, reduced heat dissipation, mechanical and chemical corrosion, bearing damage, and excessive diesel engine noise, making it difficult to meet environmental protection requirements.
A dust and noise reduction device is installed at the air intake of the power box, including a rectangular frame, a herringbone folded shell and a dust removal filter plate. It uses dust filter cotton and rock wool to absorb dust, and combines with the diesel engine muffler to reduce noise, thus achieving dual filtration of dust and noise.
It effectively prevents dust from entering the power box, reduces the risk of machine failure, extends equipment life, and ensures that the noise level is below 85dB, meeting environmental protection requirements.
Smart Images
Figure CN223594278U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to engineering machinery power equipment technical field more specifically, the utility model relates to a kind of power box air inlet dust filtering noise reduction device. BACKGROUND
[0002] Crawler mobile crushing equipment is widely used in construction site, mine, quarry and other fields, and these construction sites often produce a lot of dust, which can cause great harm to diesel generator set equipment in the power box. Mainly includes the following aspects:
[0003] 1. Insulation performance of the generator is reduced: dust can adhere to the surface of the insulation, combine with oil vapor and moisture to form a hard shell, which gradually cracks under thermal stress, causing cracks in the insulating paint film layer of the motor, resulting in turn-to-turn, phase-to-phase and ground insulation breakdown failure.
[0004] 2. Heat dissipation effect of the generator is reduced: dust can cover the surface of the winding, core and housing, hindering heat dissipation and reducing ventilation cooling effect, resulting in poor heat dissipation conditions of the motor.
[0005] 3. Mechanical and chemical erosion: mechanical and chemical action of dust can erode winding insulation and damage insulation layer, causing turn-to-turn short circuit failure.
[0006] 4. Electrical performance of the generator deteriorates: dust can affect the dielectric loss angle tangent of the motor, increase the leakage current and shorten the creepage distance of the insulation surface.
[0007] 5. Bearing damage: dust can affect the bearings on the shaft of the motor, causing bearing wear and then causing the stator and rotor to grind and heat, which can burn the coil.
[0008] 6. Belt wear of the diesel engine front end train: dust can adhere to the surface of various parts of the diesel engine, accelerating the wear of moving parts and transmission parts (belts of the diesel engine front end train).
[0009] 7. Impact on the working performance of the diesel engine: dust entering can block the radiator of the diesel engine, causing the diesel engine to overheat, reducing the power of the diesel engine and affecting its working performance.
[0010] Since dust environment causes the above-mentioned hazards to diesel generator set, the power box of existing crawler mobile crushing equipment basically does not have a dust filtering device. Therefore, the above-mentioned hazards occur from time to time.
[0011] And the diesel generator set has relatively large noise, the noise is generally 95-120 dB, only a large amount of noise reduction can make the noise level of the diesel generator set meet the current environmental protection requirements (the noise limit of crushing equipment engineering machinery equipment is 85 dB).
[0012] Based on this, a power box air inlet dust filtering and noise reduction device is provided. Contents of the utility model
[0013] The utility model discloses in order to solve the prior art problem, provide a power box air inlet dust filtering and noise reduction device. In order to realize the above purpose, the utility model adopts the following technical scheme:
[0014] A power box air inlet dust filtering and noise reduction device, including power box base, be provided with generator on the power box base, be provided with diesel engine on generator one side, be provided with diesel engine air cleaner on the diesel engine, be provided with air outlet on the power box base upper end and at diesel engine place, be provided with diesel engine silencer on the diesel engine upper end and at air outlet one side, be provided with power box cover shell subassembly on the diesel engine and generator upper end, be provided with dust filtering and noise reduction subassembly in power box cover shell subassembly and away from both sides of air outlet.
[0015] Preferably, the dust filtering and noise reduction subassembly includes a rectangular frame, a plurality of herringbone folded plate shells, and a dust filtering screen, a rectangular frame is provided on both sides of the power box cover shell subassembly away from the air outlet, a plurality of herringbone folded plate shells are provided in the rectangular frame, and a dust filtering screen is provided outside the plurality of herringbone folded plate shells.
[0016] Preferably, the herringbone folded plate shell is a perforated plate with rock wool inserted inside.
[0017] Preferably, dust filtering cotton is provided between the dust filtering screen and the plurality of herringbone folded plate shells, and the dust filtering cotton is polyurethane filtering cotton.
[0018] Preferably, the power box cover shell subassembly includes a rectangular cover shell, a smoke exhaust elbow, a power box air inlet, and an access door, a smoke exhaust elbow is provided at the top of the rectangular cover shell, power box air inlets are provided on both sides of the outer side of the rectangular cover shell, a dust filtering and noise reduction subassembly is provided in the power box air inlet, and an access door is provided on one side of the narrow edge of the rectangular cover shell and below the power box air inlet.
[0019] Preferably, an engine fan is provided on one side of the diesel engine and close to the air outlet.
[0020] Preferably, a diesel engine radiator is provided between the engine fan and the air outlet.
[0021] Preferably, the diesel engine silencer is a square structure.
[0022] Preferably, the diesel engine silencer is provided with an exhaust pipe, and the exhaust pipe is in communication with the smoke exhaust elbow.
[0023] In conclusion, the utility model has the following technical effects:
[0024] 1. The filter dust and noise reduction assembly is installed at the air inlet of the power box of the diesel engine, which is an important protective measure.
[0025] 2. The filter dust and noise reduction assembly is installed on the power box cover assembly, which can be disassembled.
[0026] 3. The human-shaped folded plate shell and the diesel engine silencer can utilize the sound waves to propagate in the sound-absorbing material, convert sound energy into heat energy due to friction, and dissipate, and the human-shaped folded plate shell can effectively improve the silencing effect and meet the requirement of 85dB for the noise limit value of the crushing equipment engineering machinery. BRIEF DESCRIPTION OF DRAWINGS
[0027] Figure 1 is an exploded view of the filter dust and noise reduction device for the air inlet of the power box of the utility model;
[0028] Figure 2 is a perspective view of the filter dust and noise reduction device for the air inlet of the power box of the utility model;
[0029] Figure 3 is a disassembly view of the dust removal filter screen plate of the utility model;
[0030] Figure 4 is a top view of the filter dust and noise reduction device for the air inlet of the power box of the utility model;
[0031] Figure 5 is Figure 4 a sectional view of A-A in FIG.
[0032] Figure 6 is a perspective view of the filter dust and noise reduction assembly;
[0033] Figure 7 is an exploded view of the filter dust and noise reduction assembly;
[0034] Figure 8 is a structure view of the herringbone-shaped folded plate shell;
[0035] Figure 9 is a front view of the filter dust and noise reduction assembly.
[0036] In the drawings, 1 - power box base, 2 - generator, 3 - diesel engine, 4 - diesel engine air filter, 5 - dust filtering and noise reduction assembly, 51 - rectangular frame, 52 - herringbone folded shell, 53 - dust removal filter screen, 54 - perforated plate, 55 - rock wool, 56 - dust filter cotton, 6 - diesel engine muffler, 61 - exhaust pipe, 7 - power box cover assembly, 71 - rectangular cover, 72 - smoke elbow, 73 - power box air inlet, 74 - access door, 8 - engine fan, 9 - diesel engine radiator, 10 - air outlet. DETAILED DESCRIPTION
[0037] In order to make the purpose, technical scheme and advantages of the utility model more clearly and clearly, the following preferred embodiments are given with reference to the drawings, and the utility model is further described in detail. However, it should be pointed out that many details listed in the description are only for the reader to have a thorough understanding of one or more aspects of the utility model, and the aspects of the utility model can be realized even without these specific details.
[0038] In the description of the utility model, it should be pointed out that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicative or suggestive of relative importance, and in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0039] Please refer to Figures 1-9As shown, a power box air inlet dust filtering and noise reduction device, comprising a power box base 1, a generator 2 is arranged on the power box base 1, a diesel engine 3 is arranged on one side of the generator 2, a diesel engine air cleaner 4 is arranged on the diesel engine 3, an air outlet 10 is arranged on the upper end of the power box base 1 and at the diesel engine, a diesel engine silencer 6 is arranged on the upper end of the diesel engine 3 and at one side of the air outlet 10, a power box cover assembly 7 is arranged on the upper end of the diesel engine 3 and the generator 2, and a dust filtering and noise reduction assembly 5 is arranged in the power box cover assembly 7 and away from both sides of the air outlet 10. The dust filtering and noise reduction assembly 5 comprises a rectangular frame 51, a plurality of herringbone folded plate shells 52 and a dust filtering screen 53, the rectangular frame 51 is arranged in the power box cover assembly 7 and away from both sides of the air outlet 10, the plurality of herringbone folded plate shells 52 are arranged in the rectangular frame 51, and the dust filtering screen 53 is arranged outside the plurality of herringbone folded plate shells 52. The two sides of the herringbone folded plate shell 52 are perforated plates 54, and rock wool 55 is inserted inside. The perforated plate 54 is made into a hollow plate with rock wool 55 inserted inside for sound absorption. The dust filtering cotton 56 is arranged between the dust filtering screen 53 and the plurality of herringbone folded plate shells 52, and the dust filtering cotton 56 is polyurethane filtering cotton. The dust is first blocked by the dust filtering screen 53 arranged in the power box cover assembly 7, so that the dust is blocked outside the device, and then the dust filtering cotton 56 arranged between the dust filtering screen 53 and the plurality of herringbone folded plate shells 52 is further blocked to further reduce the dust content in the air. Finally, the remaining dust in the air adheres to the herringbone folded plate shell 52, and the herringbone folded plate shell 52 has perforated plates 54 on both sides and rock wool 55 inserted inside to increase the adhesion of dust on the herringbone folded plate shell 52. The rock wool 55 inside can block dust, so that dust is not attached to the surface of the insulation, the winding, the core and the surface of the machine shell, and is not attached to the generator, the diesel engine and the radiator, thereby reducing the harm of dust to the diesel generator set equipment in the power box.
[0040] In one embodiment, as shown in Figure 2 The power box cover assembly 7 comprises a rectangular cover 71, a smoke exhaust elbow 72, a power box air inlet 73 and a maintenance door 74. The smoke exhaust elbow 72 is arranged on the top of the rectangular cover 71, the power box air inlets 73 are arranged on both sides of the outer side of the rectangular cover 71, and the maintenance door 74 is arranged on one side of the narrow side of the rectangular cover 71 and below the power box air inlet 73.
[0041] In one embodiment, as shown in Figure 5As shown, an engine fan 8 is installed on one side of the diesel engine 3, near the air outlet 10. A diesel engine radiator 9 is installed between the engine fan 8 and the air outlet 10. Since dust is trapped in the herringbone-shaped folding shell 52, no dust will enter the engine fan 8 and the diesel engine radiator 9, thereby improving heat dissipation and enhancing the ventilation and cooling effect of the diesel engine 3.
[0042] In one embodiment, such as Figure 1 As shown, the diesel engine muffler 6 has a square structure. The diesel engine muffler 6 is equipped with an exhaust pipe 61, which is connected to the exhaust bend 72.
[0043] In summary, the working principle of the dust filtration and noise reduction device for the power box air inlet of this utility model is as follows:
[0044] After generator 2 and diesel engine 3 start running, dust is stirred up. The dust first passes through the dust filter screen 53 at the power box air inlet 73, where it is initially blocked, preventing large dust particles from entering the equipment. Then, it is further blocked by dust filter cotton 56 placed between the dust filter screen 53 and multiple herringbone-shaped folded shells 52, further reducing the dust content in the air. Finally, any remaining dust in the air adheres to the herringbone-shaped folded shells 52. These shells have perforated plates 54 on both sides and are filled with rock wool 55, increasing dust adsorption. The rock wool 55 also blocks dust, reducing the risk of dust entering the equipment. The diesel engine muffler 6 reduces the noise of diesel engine 3. The perforated plates 54 are hollow and filled with rock wool 55 for sound absorption, further reducing the noise of diesel engine 3, thus limiting the noise level of diesel engine 3 to 85 dB. When the diesel engine 3 is running, the clean air required for combustion in the cylinder is obtained through the diesel engine air filter 4, and the exhaust gas produced is discharged through the exhaust pipe 61 provided by the diesel engine muffler 6 and the exhaust bend 72.
[0045] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A power box air inlet dust filtering and noise reduction device, comprising a power box base, characterized in that, The power box base is provided with a generator, a diesel engine is arranged on one side of the generator, a diesel engine air filter is arranged on the diesel engine, an air outlet is arranged on the upper end of the power box base and at the diesel engine, a diesel engine silencer is arranged on the upper end of the diesel engine and at one side of the air outlet, a power box cover assembly is arranged on the upper end of the diesel engine and the generator, and a dust filtering and noise reducing assembly is arranged in the power box cover assembly and away from both sides of the air outlet.
2. The device according to claim 1, characterized in that, The dust filtering and noise reducing assembly comprises a rectangular frame, a plurality of herringbone folded plate shells and a dust filtering screen, the rectangular frame is arranged in the power box cover assembly and away from both sides of the air outlet, the plurality of herringbone folded plate shells are arranged in the rectangular frame, and the dust filtering screen is arranged outside the plurality of herringbone folded plate shells.
3. The device according to claim 2, characterized in that, The herringbone folded plate shell is provided with a perforated plate on both sides and is filled with rock wool in the inside.
4. The device according to claim 2, characterized in that, Dust filtering cotton is arranged between the dust filtering screen and the plurality of herringbone folded plate shells, and the dust filtering cotton is polyurethane filtering cotton.
5. The device according to claim 1, characterized in that, The power box cover assembly comprises a rectangular cover, a smoke exhaust elbow, a power box air inlet and an access door, the smoke exhaust elbow is arranged on the top of the rectangular cover, the power box air inlets are arranged on both sides of the outer side of the rectangular cover, the dust filtering and noise reducing assembly is arranged in the power box air inlets, and the access door is arranged on one side of the narrow edge of the rectangular cover and at the lower side of the power box air inlets.
6. The device according to claim 1, characterized in that, An engine fan is arranged on one side of the diesel engine and close to the air outlet.
7. The device according to claim 6, characterized in that, A diesel engine radiator is arranged between the engine fan and the air outlet.
8. The device according to claim 1, characterized in that, The diesel engine silencer is of a square structure.
9. The device according to claim 8, characterized in that, The diesel engine silencer is provided with an exhaust pipe, and the exhaust pipe is communicated with the smoke exhaust elbow.