Inlet air pre-filtering device for excavator

Abstract

The utility model relates to the technical field of air inlet filtering, and discloses an air inlet pre-filtering device for an excavator, which comprises a filter cartridge, two sides of the filter cartridge are respectively provided with a sealing cover plate, one side of the upper end of the filter cartridge is communicated with an air outlet pipe, the other side of the upper end of the filter cartridge is communicated with an air inlet pipe, and a servo motor is fixedly arranged in the middle of the other side of the filter cartridge. According to the technical scheme, the other filter screen layer can be rotated to be aligned with the air inlet pipe, so that the filter screen layer can be replaced without shutdown, and the problems that the air inlet filter screen is extremely easy to block and the working efficiency of the excavator can be influenced by frequent replacement due to the fact that the excavator is usually applied to a construction site are solved. And the brush strip can rotate from one side of the filter screen layer to the other side of the filter screen layer, so that dust attached to the surface of the filter screen layer is cleaned in a linkage mode, when the old filter screen layer is converted from the upper portion to the lower portion, the cleaned dust is discharged through the slag discharging channel, and the disassembly frequency of the filter screen layer is further reduced.

Description

Technical Field

[0001] This utility model relates to the field of air intake filtration technology, specifically an air intake pre-filtration device for excavators. Background Technology

[0002] An excavator, also known as a digging machine or a soil excavator, is a piece of earthmoving machinery that uses a bucket to excavate materials above or below the machine's bearing surface and load them into transport vehicles or unload them into a stockpile. Currently, in the development of construction machinery, excavators primarily excavate soil, coal, silt, and pre-loosened soil and rock. The development of excavators has been relatively rapid, and they have become one of the most important pieces of construction machinery. During the air intake process, the excavator engine requires a pre-filter to initially filter the air before it passes through an air filter for further filtration.

[0003] According to CN114542336A, an air intake pre-filter for excavators is disclosed, including a housing. An air intake mesh is formed around the top of the outer surface of the housing. An inclined block is fixedly connected to the outer ring of the bottom of the housing cavity. A noise reduction protrusion is fixedly connected to the inner wall of the inclined block. An air outlet pipe is connected to the center of the bottom of the housing. A fixed seat is fixedly connected to the middle of the inner cavity of the housing. A rotating rod is arranged below the fixed seat. A flow divider fan blade is fixedly sleeved on the bottom of the rotating rod surface. A first filter screen is fixedly connected to the outer ring of the top of the fixed seat. A fixed shell is fixedly connected to the inner ring of the fixed seat. A second filter screen is embedded around the top of the outer surface of the fixed shell.

[0004] The technical solution has at least the following drawbacks: While this invention can pre-filter the air intake of excavators, the air intake filter is easily clogged due to the frequent use of excavators on construction sites, and frequent replacements will affect the excavator's working efficiency, necessitating improvement. Therefore, we propose an air intake pre-filter for excavators. Utility Model Content

[0005] The purpose of this utility model is to provide an air intake pre-filter for excavators, which solves the problem mentioned in the background art that, since excavators are often used on construction sites, the air intake filter of the excavator is easily clogged, and frequent replacement will affect the working efficiency of the excavator.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an air intake pre-filtration device for excavators, comprising a filter cylinder, both sides of which are provided with cover plates, an air outlet pipe connected to one side of the upper end of the filter cylinder, an air intake pipe connected to the other side of the upper end of the filter cylinder, a servo motor fixedly installed in the middle of the other side of the filter cylinder, a transmission rod installed at the output end of the servo motor, a partition plate welded to the outer wall of the transmission rod, a filter screen layer provided inside the partition plate, a fixing rod fixedly installed on the side of the filter screen layer near the transmission rod, a brush strip provided on the front surface of the filter screen layer, and a fixing ring fixedly installed at the upper end of the brush strip.

[0007] By adopting the above technical solution, the transmission rod can be controlled to deflect 90 degrees, thereby rotating another filter layer to align with the intake pipe. This allows for filter layer replacement without stopping the machine, solving the problem that the intake filter is easily clogged due to the frequent use of excavators on construction sites, and that frequent replacement affects the excavator's working efficiency. At the same time, during the deflection of the partition plate, the brush strip can rotate from one side of the filter layer to the other, thus cleaning the dust attached to the surface of the filter layer in a coordinated manner. When the old filter layer is rotated from top to bottom, the swept dust is discharged through the slag discharge channel, ensuring that the filter layer can be replaced after several rotations, further reducing the frequency of filter layer disassembly.

[0008] Optionally, a plurality of counterweights are fixedly installed at the front end of the brush strip, and the counterweights are distributed at equal intervals.

[0009] By adopting the above technical solution and setting the counterweight, the weight of the brush strip is increased, making it easier for the brush strip to rotate by gravity.

[0010] Optionally, the partitions are configured as four, and the partitions are arranged in a ring.

[0011] By adopting the above technical solution and setting up partition plates, the filtration space is divided into four parts.

[0012] Optionally, the fixing ring is sleeved on the outside of the fixing rod, and the fixing ring is movably connected to the fixing rod.

[0013] By adopting the above technical solution and setting the fixing ring, the brush strip can be rotated stably.

[0014] Optionally, a slag discharge channel is provided at the lower end of the other side of the filter cylinder, and the slag discharge channel is located below the brush strip.

[0015] By adopting the above technical solution and setting up a slag discharge channel, it is convenient to discharge the swept dust.

[0016] Optionally, two cover plates are provided, and the cover plates are detachably connected to the filter cylinder by bolts.

[0017] By adopting the above technical solution and setting the cover plate, it is convenient to remove and replace the filter layer along which dust accumulates.

[0018] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0019] This technical solution, through the design of a filter cylinder, cover plate, servo motor, partition plate, filter screen layer, brush strip, and slag discharge channel, can control the transmission rod to deflect 90 degrees, thereby rotating another filter screen layer to align with the air intake pipe. This allows for filter screen layer replacement without stopping the machine, solving the problem that the air intake filter screen is easily clogged due to the frequent use of excavators on construction sites, and that frequent replacement affects the excavator's working efficiency. At the same time, during the deflection of the partition plate, the brush strip can rotate from one side of the filter screen layer to the other, thus cleaning the dust attached to the surface of the filter screen layer. When the old filter screen layer is rotated from top to bottom, the swept dust is discharged through the slag discharge channel, ensuring that the filter screen layer can be replaced after several rotations, further reducing the frequency of filter screen layer disassembly. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a top-view three-dimensional structural diagram of an air intake pre-filter device for an excavator according to the present invention;

[0022] Figure 2 This is a schematic diagram of the internal exploded structure of an air intake pre-filter device for an excavator according to the present invention.

[0023] Figure 3 This is a bottom-view three-dimensional structural diagram of an air intake pre-filter device for an excavator according to the present invention;

[0024] Figure 4 This is a partially enlarged structural diagram of section A of the air intake pre-filter device for excavators according to this utility model.

[0025] In the diagram: 1. Filter cylinder; 11. Cover plate; 12. Air outlet pipe; 13. Air inlet pipe; 2. Servo motor; 21. Transmission rod; 22. Divider plate; 23. Filter screen layer; 24. Fixing rod; 25. Brush strip; 26. Fixing ring; 27. Counterweight; 3. Slag discharge channel. Detailed Implementation

[0026] Please see Figure 1-4 This utility model provides a technical solution: an air intake pre-filtration device for excavators, including a filter cylinder 1, with cover plates 11 on both sides of the filter cylinder 1, an air outlet pipe 12 connected to one side of the upper end of the filter cylinder 1, and an air intake pipe 13 connected to the other side of the upper end of the filter cylinder 1. A servo motor 2 is fixedly installed in the middle of the other side of the filter cylinder 1, and a transmission rod 21 is installed at the output end of the servo motor 2. A partition plate 22 is welded to the outer wall of the transmission rod 21, and a filter screen layer 23 is provided inside the partition plate 22. A fixing rod 24 is fixedly installed on the side of the filter screen layer 23 near the transmission rod 21, and a brush strip 25 is provided on the front surface of the filter screen layer 23. A fixing ring 26 is fixedly installed at the upper end of the brush strip 25. The fixing ring 26 is sleeved on the outside of the fixing rod 24 and is movably connected to the fixing rod 24. The fixing ring 26 facilitates the stable rotation of the brush strip 25. A slag discharge channel 3 is provided at the lower end of the other side of the filter cylinder 1. The slag discharge channel 3 is located below the brush strip 25. The slag discharge channel 3 facilitates the discharge of the swept dust. Two cover plates 11 are provided. The cover plates 11 are detachably connected to the filter cylinder 1 by bolts. The cover plates 11 facilitate the removal and replacement of the filter screen layer 23 along which the dust accumulates.

[0027] Multiple counterweights 27 are fixedly installed at the front end of the brush strip 25, and the counterweights 27 are evenly distributed. By setting the counterweights 27, the weight of the brush strip 25 is increased, making it easier for the brush strip 25 to rotate by gravity.

[0028] Four partition plates 22 are set and arranged in a ring. The filtration space is divided into four parts by setting the partition plates 22.

[0029] During intake filtration, the filter cylinder 1 is first divided into four equal filtration spaces by the partition plate 22. Then, the gas flow rate in the outlet pipe 12 is monitored by a gas flow sensor. When the gas flow rate falls below a set threshold, the gas flow sensor transmits a signal to the PLC controller. The PLC controller then controls the transmission rod 21 to deflect 90 degrees, thereby rotating another filter layer 23 to align with the intake pipe 13. This allows for the replacement of the filter layer 23 without stopping the machine, thus solving the problem of easy clogging of the intake filter due to the frequent use of excavators on construction sites, which in turn affects the excavator's working efficiency. The problem is that, at the same time, during the deflection of the partition plate 22, the dust-laden filter layer 23 will also deflect, and the brush strip 25 corresponding to the filter layer 23 will also rotate. With the help of the counterweight block 27 to increase the weight of the brush strip 25, the brush strip 25 will rotate from one side of the filter layer 23 to the other side, thereby cleaning the dust attached to the surface of the filter layer 23 in a coordinated manner. When the old filter layer 23 is switched from top to bottom, the cleaned dust is discharged through the slag discharge channel 3, ensuring that the filter layer 23 can be replaced after several rotations, further reducing the frequency of disassembly of the filter layer 23.

Claims

1. An air intake pre-filtration device for an excavator, comprising a filter cartridge (1), characterized in that: Both sides of the filter cylinder (1) are provided with cover plates (11). One side of the upper end of the filter cylinder (1) is connected to an air outlet pipe (12), and the other side of the upper end of the filter cylinder (1) is connected to an air inlet pipe (13). A servo motor (2) is fixedly installed in the middle of the other side of the filter cylinder (1). A transmission rod (21) is installed at the output end of the servo motor (2). A partition plate (22) is welded to the outer wall of the transmission rod (21). A filter screen layer (23) is provided inside the partition plate (22). A fixing rod (24) is fixedly installed on the side of the filter screen layer (23) near the transmission rod (21). A brush strip (25) is provided on the front surface of the filter screen layer (23). A fixing ring (26) is fixedly installed at the upper end of the brush strip (25).

2. The air intake pre-filter device for an excavator according to claim 1, characterized in that: Multiple counterweights (27) are fixedly installed at the front end of the brush strip (25), and the counterweights (27) are distributed at equal intervals.

3. The air intake pre-filter for an excavator according to claim 2, characterized in that: The partition plates (22) are configured as four, and the partition plates (22) are arranged in a ring.

4. The air intake pre-filter for an excavator according to claim 3, characterized in that: The fixing ring (26) is sleeved on the outside of the fixing rod (24), and the fixing ring (26) is movably connected to the fixing rod (24).

5. An air intake pre-filter for an excavator according to claim 4, characterized in that: The filter cylinder (1) has a slag discharge channel (3) at the lower end of the other side, and the slag discharge channel (3) is located below the brush strip (25).

6. The intake pre-filter device for an excavator according to claim 5, characterized in that: Two cover plates (11) are provided, and the cover plates (11) are detachably connected to the filter cylinder (1) by bolts.

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