Quick-change multi-stage dust removal and sound elimination integrated device for a dust collection vehicle

Abstract

The utility model belongs to the field of environmental protection vehicles, concretely relates to a quick change formula multistage dust removal and sound absorption integrated device for dust suction vehicle. A quick change formula multistage dust removal and sound absorption integrated device for dust suction vehicle, including primary settling chamber, the inlet end of primary settling chamber is connected dust collecting pipe, is provided with fine filter chamber above primary settling chamber, is provided with filter core unit in fine filter chamber, filter core unit includes filter core end cover and filter core body, is provided with end cover handle and dusting motor on filter core end cover, the first end of filter core body is fixedly connected with filter core end cover, the second end of filter core body is fixed in the inside of fine filter chamber side plate opposite with filter core end cover. Fine filter chamber is connected with air outlet pipe through taper interface, air outlet pipe is connected with dust suction fan, and the sound absorber is connected at the air outlet position of dust suction fan. The device fuses multistage dust removal technology and high -efficient sound absorption technology in modularization unit, and the degree of integration is higher, and can realize the quick disassembly of filter core, greatly simplifies the process.

Description

Technical Field

[0001] This utility model belongs to the field of environmental protection vehicles, specifically relating to a quick-change multi-stage dust removal and noise reduction integrated device for vacuum trucks. Background Technology

[0002] Traditional sanitation cleaning relies heavily on manpower, leading to rising costs year by year. Furthermore, with increasing urban areas and population density, higher demands are being placed on the efficiency and quality of sanitation operations, making mechanized cleaning an inevitable trend to replace manual labor. Vacuum trucks utilize powerful negative pressure airflow to suck various types of waste from the road into an onboard garbage bin. After being filtered by a dust removal system, the clean air is released into the atmosphere. Currently, most vacuum trucks employ the following structure: a filter element is fixedly installed above the garbage bin, directly fixed to the air duct via flanges or bolts. When the filter element becomes severely clogged and needs replacement or cleaning, operators must climb to a height, use tools to loosen multiple bolts, and then manually lift and support the inside of the filter element to slowly remove the dust-covered filter. The process presents several problems: 1. Extremely inconvenient maintenance: narrow operating space, time-consuming and labor-intensive, and high-altitude operation risks; 2. Impact on work efficiency: long vehicle downtime reduces attendance rate; 3. Prone to secondary pollution: prolonged disassembly and unstable operation can easily lead to dust scattering, which is unfriendly to the environment and the health of operators; 4. Externally mounted muffler: usually installed as a separate component outside the vehicle body, it occupies a large space, has complex piping connections, and has limited noise reduction effect. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a quick-change multi-stage dust removal and noise reduction integrated device for vacuum trucks. This device integrates multi-stage dust removal technology and high-efficiency noise reduction technology into a modular unit, achieving a higher degree of integration. It also enables quick disassembly and assembly of filter elements, greatly simplifying the process of maintenance, cleaning, and switching between different operating conditions. Through multi-stage synergy, it achieves efficient capture of dust across the entire range, from large particles to micron-sized dust, and significantly reduces exhaust and system operating noise.

[0004] To solve the above technical problems, the present invention adopts the following technical solution: a quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner, including a primary settling chamber, the inlet end of which is connected to the dust collection pipe of the vacuum cleaner, and a fine filter chamber is provided above the primary settling chamber, the bottom of which is open and connected to the outlet end of the top of the primary settling chamber.

[0005] The fine filtration chamber is equipped with multiple filter element units. Each filter element unit includes a filter element end cap and a filter element body. The filter element end cap is threadedly connected to the side plate of the fine filtration chamber. The filter element end cap is equipped with an end cap handle and a dust-vibrating motor. The first end of the filter element body is fixedly connected to the filter element end cap, and the second end of the filter element body is fixed to the inside of the side plate of the fine filtration chamber opposite to the filter element end cap.

[0006] The fine filtration chamber is connected to the air outlet pipe via a conical interface. The conical interface is connected to the second end of all filter cartridges in the fine filtration chamber. The air outlet pipe is connected to the vacuum cleaner fan, and a silencer is connected at the air outlet of the vacuum cleaner fan.

[0007] Preferably, the fine filtration chamber is provided with two parallel filter cartridge units.

[0008] Preferably, a fixing boss is provided on the inner side of the fine filtration chamber side plate connected to the second end of the filter element body, and a sealing ring is provided on the outer side of the fixing boss, with the inner wall of the second end of the filter element body in close contact with the sealing ring.

[0009] Preferably, the muffler has multiple staggered muffler plates and muffler cavities arranged from bottom to top. The muffler plates are long plate-shaped structures, and the muffler cavities are composed of two inclined muffler plates and the inner wall of the muffler, forming a wedge-shaped sound absorber facing the center of the muffler.

[0010] More preferably, both the sound-absorbing plate and the sound-absorbing cavity are made of sound-absorbing material.

[0011] Preferably, a baffle is provided inside the muffler along the axial direction, and the inner wall of the muffler and the surface of the baffle are covered with a sound insulation layer.

[0012] Preferably, the tapered interface is larger in size when connected to the side of the fine filter chamber.

[0013] The beneficial effects of this utility model are as follows: 1. Integration. Multi-stage physical dust removal technology and high-efficiency noise reduction technology are integrated into a compact modular unit. The cyclone fan and silencer are integrated into a single design, resulting in a reasonable structure that greatly saves vehicle space.

[0014] 2. Quick-change type. The filter element end cap is fixedly connected to the first end of the filter element body. By pulling the filter element end cap, the filter element can be directly pulled out from the fine filtration chamber, realizing quick disassembly and assembly of the filter element. This greatly simplifies maintenance and cleaning work, which can be completed by a single person in a short time. It is safe, labor-saving, and low-pollution. The dust removal motor is directly integrated into the filter element end cap, which reduces maintenance time and labor costs, and improves vehicle uptime and operational efficiency.

[0015] 3. High efficiency. Through the multi-stage synergy of the primary settling chamber and the fine filtration chamber, it achieves efficient capture of dust ranging from large particles to micron-sized particles, significantly reducing exhaust and system operating noise; the conical connection port ensures airtightness of the connection and avoids performance loss. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of Embodiment 1; Figure 2 This is a schematic diagram of the primary settling chamber and the fine filtration chamber in Example 1; Figure 3 This is a schematic diagram of the overall structure of Embodiment 1; Figure 4 This is a schematic diagram of the primary settling chamber in Example 1; Figure 5 This is a schematic diagram of the filter element unit in Example 1; Figure 6 This is a schematic diagram of the connection structure between the filter element unit and the fine filtration chamber in Embodiment 1; Figure 7 This is a schematic diagram of the connection structure between the vacuum cleaner fan and the silencer in Embodiment 1; Figure 8 This is a schematic diagram of the internal structure of the silencing cavity in Embodiment 1; Figure 9 This is a schematic diagram of the silencer structure in Embodiment 2; Figure 10 This is a schematic diagram of the internal sound insulation layer of the muffler in Embodiment 2.

[0017] Figure label: 1. Primary settling chamber; 2. Fine filtration chamber; 3. Conical interface; 4. Air outlet duct; 5. Vacuum fan; 6. Silencer; 61. Silencing plate; 62. Silencing chamber; 7. Dust bin; 8. Filter element unit; 81. Filter element end cap; 82. Filter element body; 83. End cap handle; 84. Dust-vibrating motor; 9. Fixing boss; 10. Sealing ring; 11. Partition; 12. Sound insulation layer. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to illustrate the structure of the present invention more clearly.

[0019] Example 1: As per the instruction manual Figure 1-3As shown, a quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner cart includes a primary settling chamber 1. The inlet end of the primary settling chamber 1 is connected to the dust collection pipe of the vacuum cleaner cart, through which the dust-laden airflow enters. A fine filter chamber 2 is disposed above the primary settling chamber 1. The bottom of the fine filter chamber 2 is open and communicates with the outlet end of the top of the primary settling chamber 1. The fine filter chamber 2 is connected to an air outlet pipe 4 through a conical interface 3. The conical interface 3 communicates with all filter cartridge bodies 82 inside the fine filter chamber 2. The air outlet pipe 4 is connected to a vacuum cleaner fan 5, and a silencer 6 is connected at the air outlet of the vacuum cleaner fan 5.

[0020] The bottom of the primary settling chamber 1 is connected to the garbage bin 7 of the sweeper. The dust collection pipe of the sweeper sends the dust-laden airflow into the primary settling chamber 1 through the inlet. Large particles of garbage naturally settle into the garbage bin 7 below due to the reduced wind speed. Then, the airflow carrying this fine dust enters the fine filtration chamber 2 from the primary settling chamber 1. The fine filtration chamber 2 is a sealed structure, and sealing rings are installed at various points between it and the filter element unit 8 to ensure that the airflow can only enter and exit from the filter element body 82. After being filtered by the filter element body 82, the dust is trapped on the surface of the filter element body 82, while clean air enters the internal cavity of the filter element body 82. Under the suction of the vacuum fan 5, the airflow gathers at the conical interface 3 and enters the vacuum fan 5 through the air outlet pipe 4. A rotating airflow is formed in the volute of the vacuum fan 5. After being silenced by the silencer 6, the rotating airflow is discharged into the atmosphere.

[0021] like Figure 4 As shown, the conical interface 3 connected to the fine filter chamber 2 has a larger size on the side connected to the fine filter chamber 2, thus forming a flared shape from the fine filter chamber 2 to the air outlet duct 4. A sealing ring is also required at the connection between the conical interface 3 and the air outlet duct 4 to form a reliable airtight connection, so that all the airflow in the filter element body 82 is introduced into the air outlet duct 4 to prevent air leakage.

[0022] like Figure 5 As shown, two parallel filter element units 8 are arranged in the fine filtration chamber 2. Each filter element unit 8 includes a filter element end cap 81 and a filter element body 82. The filter element end cap 81 is threadedly connected to the side plate of the fine filtration chamber 2. The filter element end cap 81 is provided with an end cap handle 83 and a dust shaking motor 84. The first end of the filter element body 82 is fixedly connected to the filter element end cap 81, and the second end of the filter element body 82 is fixed to the inner side of the side plate of the fine filtration chamber 2 opposite to the filter element end cap 81.

[0023] After removing the bolts connecting the filter element end cap 81 to the side wall of the fine filtration chamber 2 during disassembly and assembly, the entire filter element unit 8 can be easily removed and placed in by holding the end cap handle 83 on the filter element end cap 81, greatly saving operation time and allowing for operation by a single person. In contrast, in the prior art, the filter element body 82 is directly fixed to the two side walls of the fine filtration chamber 2 at both ends. During disassembly and assembly, both ends of the filter element body 82 need to be disassembled and assembled separately, and another person is needed to assist in fixing the filter element. This operation is complicated and time-consuming, especially when cleaning the filter element body 82, which results in a large amount of dirt falling off.

[0024] A dust-vibrating motor 84 is installed on the filter element end cap 81. The dust-vibrating motor 84 is a pulse jet motor, which accurately sends an electrical signal according to a preset time or in conjunction with a differential pressure sensor based on the pressure difference across the filter element, controlling the emission of high-voltage pulses to cause the dust accumulated on the filter element body 82 to fall into the dustbin 7. Through the integration of the filter element body 82 and the filter element end cap 81, the filter element body 82 achieves an integrated design for filtration and dust removal, saving space. Furthermore, the filter element body 82 is designed with a drawer-type structure, solving the problem of difficult filter element replacement and maintenance.

[0025] like Figure 6 As shown, a fixing boss 9 is provided on the inner side of the side plate of the fine filter chamber 2, which is connected to the second end of the filter element body 82. A sealing ring 10 is fitted on the outer side of the fixing boss 9, and the inner wall of the second end of the filter element body 82 is in close contact with the sealing ring 10. The filter element body 82 has a hollow structure, with its first end connected to the filter element end cap 81, and its second end firmly fixed by the locking action of the fixing boss 9 and the sealing ring 10. The sealing ring 10, located on the outer side of the fixing boss 9, improves airtightness and increases the friction between the filter element body 82 and the fixing boss 9, thus improving the tightness of the connection between the two. In use, the second end of the filter element body 82 is fitted onto the outer side of the fixing boss 9, while the filter element end cap 81 at the first end of the filter element body 82 is threadedly connected to the fine filter chamber 2. The interaction of these two sides firmly clamps the filter element body 82 within the fine filter chamber 2.

[0026] The filter body 82 used in vacuum cleaners is mostly made of high-strength, high-filtration-efficiency fabric. Therefore, the filter body 82 is relatively lightweight and does not require any other supporting structures. If the integrated structure of the filter body 82 and the filter end cap 81 is applied to other heavier filter bodies 82, a guide rail structure needs to be designed in the fine filtration chamber 2 to allow the filter to slide out smoothly. This is something that those skilled in the art can obviously understand. It is a variation of this application and is also within the scope of protection of this application.

[0027] like Figure 7As shown, the vacuum cleaner fan 5 horizontally ejects airflow from the volute into the silencer 6, which is vertically positioned to effectively increase sound absorption efficiency. Figure 8 As shown, multiple staggered sound-absorbing plates 61 and sound-absorbing cavities 62 are arranged from bottom to top inside the muffler 6. The sound-absorbing plates 61 are long plate-shaped structures, and the sound-absorbing cavities 62 are composed of two inclined sound-absorbing plates 61 and the inner wall of the muffler 6, forming a wedge-shaped sound absorber towards the center of the muffler 6.

[0028] By placing sound-absorbing measures alternately on both sides of the inner wall of the silencer 6, the travel path of sound waves can be increased, and the absorption efficiency of sound waves can be improved. In particular, the wedge-shaped sound absorber structure of the sound-absorbing cavity 62 provides a continuously changing impedance compared with the rectangular cavity. It can more effectively deal with sound waves of different frequencies. Moreover, the sound waves will undergo more reflections in the acute angle space. Each reflection will convert some sound energy into heat energy, which will be absorbed by the sound-absorbing material, resulting in better attenuation effect.

[0029] Obviously, the design of silencer 6 does not conflict with other noise reduction measures. To further improve the noise reduction effect, the noise reduction material can be directly wrapped around the outside of the fan casing, or a silencer 6 can be added to the front end of the air inlet of the dust collector fan 5. This is something that can be obviously thought of by those skilled in the art and is also within the protection scope of this utility model.

[0030] Example 2: This utility model also provides, for example... Figure 9 The muffler 6 structure shown includes a partition 11 arranged along the axial direction of the muffler 6. This partition is located at the center of the muffler 6, and both the inner wall of the muffler 6 and the surface of the partition 11 are covered with a sound-insulating layer 12. Figure 10 As shown, the inner wall of the silencer 6 and the partition 11 can be made of a mesh plate with several sound-absorbing holes, and then covered with a sound insulation layer 12. This can improve the sound absorption efficiency and increase the fixing strength with the sound insulation layer 12.

[0031] This utility model mainly consists of three functional modules: 1. Multi-stage dust removal system. This system follows a series dust removal process, starting with easier stages and progressing to more difficult ones, and coarse particles before fine ones. In the primary settling chamber 1, the high-speed dust-carrying airflow suddenly decreases in velocity, causing large dust particles (such as pebbles and sand) to detach from the airflow due to inertia and settle into the bottom bin 7 by gravity. The remaining airflow carrying small dust particles rises into the fine filtration chamber 2. The filter element body 82 is covered with a polytetrafluoroethylene membrane, which has surface filtration properties, making it difficult for fine dust to enter the interior of the filter element body 82. Instead, it accumulates on the surface of the filter element body 82, facilitating pulse backwash cleaning by the dust-vibrating motor 84. Practical experience has proven that this dust removal system achieves a dust removal efficiency of over 99.9%. 2. Integrated silencing system. The silencer 6 is connected to the exhaust port of the vacuum cleaner fan 5, employing resistive silencing to eliminate exhaust noise and airflow jet noise. The silencing design is tightly integrated with the airflow path; the entire exhaust duct serves as both the channel and the silencer 6, eliminating the need for external components and saving space in the vacuum cleaner truck. 3. Quick-change modular structure. The filter element body 82 and filter element end cap 81 are integrated to form a robust, integrated filter element unit 8 with a pull-out end cap handle 83. It can be pulled out and removed from the fine filtration chamber 2 like a drawer, and with the fixing support of the fixing boss 9, quick and reliable fixing and release are achieved. To further improve quick-change efficiency, electrical quick-connect connectors can be provided for components such as the dust-vibrating motor 84, automatically connecting and disconnecting the circuit as the filter element unit 8 is pushed in or pulled out.

[0032] 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 technical principles 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 quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck, characterized in that: It includes a primary settling chamber, the inlet of which is connected to the dust collection pipe of the vacuum truck. Above the primary settling chamber is a fine filter chamber, the bottom of which is open and connected to the outlet at the top of the primary settling chamber. The fine filtration chamber contains multiple filter cartridge units. Each filter cartridge unit includes a filter cartridge end cap and a filter cartridge body. The filter cartridge end cap is threadedly connected to the side plate of the fine filtration chamber. The filter cartridge end cap is equipped with an end cap handle and a dust-vibrating motor. The first end of the filter cartridge body is fixedly connected to the filter cartridge end cap, and the second end of the filter cartridge body is fixed to the inner side of the fine filtration chamber side plate opposite to the filter cartridge end cap. The fine filtration chamber is connected to the air outlet duct via a conical interface, and the conical interface is connected to the second end of all the filter cartridges inside the fine filtration chamber. The air outlet pipe is connected to the vacuum cleaner fan, and a silencer is connected at the air outlet of the vacuum cleaner fan.

2. The quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck according to claim 1, characterized in that: The fine filtration chamber contains two parallel filter cartridge units.

3. The quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck according to claim 1, characterized in that: A fixing boss is provided on the inner side of the fine filter chamber side plate connected to the second end of the filter element body, and a sealing ring is fitted on the outer side of the fixing boss. The inner wall of the second end of the filter element body is in close contact with the sealing ring.

4. The quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck according to claim 1, characterized in that: The muffler has multiple staggered muffler plates and muffler cavities arranged from bottom to top. The muffler plates are long plate-shaped structures, and the muffler cavities are composed of two inclined muffler plates and the inner wall of the muffler, forming a wedge-shaped sound absorber towards the center of the muffler.

5. A quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck according to claim 4, characterized in that: Both the sound-absorbing plate and the sound-absorbing cavity are made of sound-absorbing material.

6. The quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck according to claim 1, characterized in that: A baffle is provided inside the muffler along the axial direction, and the inner wall of the muffler and the surface of the baffle are covered with a sound insulation layer.

7. A quick-change multi-stage dust removal and noise reduction integrated device for a vacuum cleaner truck according to claim 1, characterized in that: The tapered interface is larger in size when it connects to the side of the fine filtration chamber.

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