Air pre-purification device

Abstract

The utility model discloses an air pre-purification device which comprises a confluence assembly, a rotational flow assembly, a dust collection assembly and an air outlet pipe, an air outlet is formed above the rotational flow assembly, the confluence assembly is arranged corresponding to the air outlet, a dust outlet is formed below the rotational flow assembly, the dust collection assembly is arranged corresponding to the dust outlet, and the air outlet pipe is communicated with the confluence assembly. The air outlet pipe penetrates through the rotational flow assembly and the dust collection assembly in the vertical direction and is arranged close to the side edges of the rotational flow assembly and the dust collection assembly, so that the multiple rotational flow pipes in the rotational flow assembly and the dust collection basin in the dust collection assembly are all concentrated on the same side of the air outlet pipe. According to the air pre-purification device, the space used for containing dust in the dust collecting basin can be better concentrated, the dust discharging operation is more convenient, the connection stability of all the components is good, the overall structural strength of the air pre-purification device is enhanced, the connection and installation procedures are simplified, and the sealing performance is good.

Description

Technical Field

[0001] The utility model relates to the field of engine air intake filtration, in particular to an air pre-purification device for pre-filtering engine air intake. Background Art

[0002] Engines require air to operate. To reduce or prevent dust and impurities in the air from entering the engine with the airflow, an air filter is typically installed in the engine's intake system to filter the incoming air through a filter element. While filter elements offer excellent filtering performance, frequent replacement is costly and inconvenient. Therefore, existing engine intake systems incorporate a pre-cleaner device before the traditional air filter to pre-filter the air entering the filter element. This pre-cleaner device can pre-filter large amounts of dust and impurities, keeping the air filter clean for extended periods, thus enhancing engine performance. It also extends the life of the filter element, reduces replacement frequency, and lowers engine maintenance costs.

[0003] Existing air pre-purifiers typically have an outlet pipe extending vertically downward and passing through the center of the ash collection basin to ensure overall structural stability. However, this outlet pipe placement compromises the integrity of the ash collection space within the ash collection basin, making it difficult for dust to collect in the basin, and thus complicating ash removal operations. Utility Model Content

[0004] The purpose of this utility model is to provide an air pre-purification device that, by offsetting the air outlet pipe, centralizes the dust collection space in the dust collection basin while ensuring good overall structural stability of the air pre-purification device. The specific technical solution is as follows:

[0005] An air pre-purification device includes a converging assembly, a swirl assembly, a dust collecting assembly and an air outlet pipe. An air outlet is formed above the swirl assembly, and the converging assembly is arranged corresponding to the air outlet. A dust outlet is formed below the swirl assembly, and the dust collecting assembly is arranged corresponding to the dust outlet. The air outlet pipe is connected to the converging assembly, and the air outlet pipe passes through the swirl assembly and the dust collecting assembly in a vertical direction, and is arranged close to the sides of the swirl assembly and the dust collecting assembly, so that multiple swirl tubes in the swirl assembly and the dust collecting basin in the dust collecting assembly are concentrated on the same side of the air outlet pipe.

[0006] Furthermore, the swirl assembly includes an upper plate, the swirl tube includes an inner tube, the outlet pipe includes an upper tube, the upper tube and the inner tubes of multiple swirl tubes are integrally formed with the upper plate, and the upper tube is offset and arranged on one side of the upper plate so that the inner tubes of multiple swirl tubes are concentrated on the same side of the upper tube.

[0007] Furthermore, the swirl assembly includes a lower plate, the swirl tube includes an outer tube, the air outlet pipe includes a lower tube, the lower tube and the outer tubes of multiple swirl tubes are integrally formed with the lower plate, and the lower tube is offset and arranged on one side of the lower plate so that the outer tubes of multiple swirl tubes are concentrated on the same side of the lower tube.

[0008] Furthermore, the multiple swirl tubes in the swirl assembly are arranged in a semicircular shape around the air outlet pipe.

[0009] Furthermore, a groove structure with a single-side opening is formed on the ash collecting basin, and the air outlet pipe is embedded in the groove structure through the opening, so that the ash collecting basin and the air outlet pipe are embedded in each other.

[0010] Furthermore, the ash collecting basin is provided with extensions on both sides of the groove structure, and the extensions are extended toward the side walls of the air outlet pipe to increase the area of ​​the upper opening of the ash collecting basin.

[0011] Furthermore, the ash collecting basin includes an upper wall and a lower wall connected to each other, the upper wall is surrounded by multiple upper wall surfaces, and the upper wall close to the air outlet pipe is recessed toward the middle of the ash collecting basin to form a tubular chamber that can accommodate the air outlet pipe, and the lower wall is surrounded by multiple inclined lower wall surfaces, and the bottom converges to form an ash discharge port.

[0012] Furthermore, the automatic dust discharge device is located below the dust collecting assembly and is connected to the dust discharge port of the dust collecting assembly.

[0013] Furthermore, the automatic ash discharge device includes an ash discharge valve body assembly and an ash discharge control assembly. The ash discharge valve body assembly is installed at the ash discharge port at the bottom of the dust collection unit. The ash discharge control assembly is connected to the ash discharge valve body assembly to control the opening and closing of the ash discharge valve body assembly.

[0014] Furthermore, a containing cover is provided on the ash collecting basin, and the ash discharge control component is arranged in the containing cover.

[0015] The air pre-purifier of the present invention can better concentrate the space for accommodating dust within the dust collection basin, making dust removal from the dust collection basin more convenient and suitable for manual or automatic dust removal. Furthermore, the connection stability between the outlet pipe and the swirl assembly, the confluence assembly, and the dust collection assembly is good, thereby enhancing the overall structural strength of the air pre-purifier, ensuring the installation and operational stability of the air pre-purifier, and simplifying the connection and installation process between the outlet pipe and the swirl assembly. The air outlet pipe, the upper plate, and the lower plate provide good sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is an exploded view of Example 1 of the present utility model.

[0017] Figure 2 This is a schematic diagram of the inner tube of Example 1 of the present invention.

[0018] Figure 3 This is a schematic diagram of the outer tube of Example 1 of the present utility model.

[0019] Figure 4 This is a schematic diagram of the dust collection unit of Example 1 of the present invention being removed.

[0020] Figure 5 This is a schematic diagram of the carrying unit of Example 1 of the present invention.

[0021] Figure 6 This is a schematic diagram of the dust collection unit of Example 1 of the present invention.

[0022] Figure 7 This is a schematic diagram of the bottom of the dust collection unit in Example 1 of the present invention.

[0023] Figure 8 This is a schematic diagram of the loading of the dust collection unit of Example 1 of the present invention.

[0024] Figure 9 This is an overall schematic diagram of Example 2 of the present utility model.

[0025] Figure 10 This is a cross-sectional view of Example 2 of the present utility model.

[0026] Figure 11 This is an exploded view of Example 2 of the present utility model.

[0027] Figure 12 This is an exploded view of the swirl component of Example 2 of the present invention.

[0028] Figure 13 This is a top view of the upper plate of the swirl assembly in Example 2 of the present invention.

[0029] Figure 14 This is a bottom view of the lower plate of the swirl assembly in Example 2 of the present utility model.

[0030] Figure 15 It is a three-dimensional diagram of the dust collection component of the second embodiment of the present invention.

[0031] Figure 16 This is a top view of the dust collection assembly of Example 2 of the present utility model. DETAILED DESCRIPTION

[0032] In order to better understand the purpose, structure and function of the present invention, the air pre-purification device of the present invention is described in detail below with reference to the accompanying drawings.

[0033] like Figures 1 to 4In the embodiment shown, the air pre-purification device of the present invention includes a cyclone component 100 that can separate dust and impurities in the air. A cyclone tube is provided in the cyclone component 100. The cyclone tube is composed of an inner tube 110 and an outer tube 120. The inner tube 110 includes an air outlet 111 and a connecting end. The outer tube 120 includes a dust outlet 121 and a connecting end. The connecting end of the inner tube 110 extends into the connecting end of the outer tube 120, and forms an annular air inlet at the connection. A cyclone is provided at the air inlet. Blades, air containing dust and impurities enters the swirl tube from the air inlet, and swirls under the action of the swirl blades; dust and impurities spirally move along the outer tube 120 and are discharged through the dust outlet 121 of the outer tube 120, and the purified air spirally moves along the inner tube 110 and is discharged through the air outlet 111 of the inner tube 110; the air outlet 111 of the inner tube 110 of the swirl tube can be connected to the engine through the air outlet pipe 400 or other connecting parts to guide the purified air to the engine.

[0034] Specifically, the air pre-purifier typically includes multiple cyclone tubes arranged side by side. The air outlets 111 of the multiple cyclone inner tubes 110 can first collect the purified air together, and then pass it to the engine through a connecting piece such as an outlet pipe 400. For example, a confluence chamber can be provided in the air pre-purifier, so that the air outlet 111 of each cyclone inner tube 110 is connected to the confluence chamber. At the same time, one end of the outlet pipe 400 is connected to the confluence chamber and the other end is connected to the engine. Of course, the dust outlets 121 of the multiple cyclone outer tubes 120 can also collect the separated dust and impurities. For example, an ash basin assembly 300 can be provided in the air pre-purifier, so that the dust outlet 121 of each cyclone outer tube 120 is connected to the ash basin assembly 300, so that the separated dust and impurities are collected and temporarily stored in the ash basin assembly 300. When the impurities in the ash basin assembly 300 reach a certain amount, the ash basin assembly 300 is then discharged and cleaned.

[0035] like Figure 4As shown, the air pre-purification device of the present invention is particularly suitable for environments with high concentrations of air impurities, and is also suitable for equipment or environments with high purification requirements. This is because the ash basin assembly 300 of the air pre-purification device is provided with a detachable carrying unit 310 and a dust collecting unit 330. The carrying unit 310, on the one hand, receives the air impurities scattered on the edge of the dust collecting unit 330, and on the other hand, is tightly connected to the shell 321 and the confluence assembly 200 above it, so that the scattered air impurities are completely sealed in the device to prevent them from overflowing to the outside; at the same time, under the premise of providing the carrying unit 310, the utility model addresses the situation where the longitudinal external space of the air pre-purification device is insufficient and it is impossible to clean the ash downward or remove the ash basin assembly. By providing the dust collecting unit 330 and the carrying unit 310 with a lateral movable connection, a disassembly space for the ash basin assembly is formed in the lateral direction, making cleaning easy to operate, and during horizontal operation, it helps the operator to check the amount of impurities inside the dust collecting unit 330 in time before unloading the dust collecting unit 330, avoiding the dust collecting unit 330 from tipping over during loading and unloading, thereby enhancing the stability and ease of operation.

[0036] The lateral direction mentioned above is preferably a horizontal front-to-back direction, or a horizontal left-to-right direction. Of course, there may be a relative inclination angle with the horizontal plane, as long as no longitudinal space is required when disassembling the dust collecting unit.

[0037] Specifically, such as Figures 1 to 4 In the illustrated embodiment 1, the air pre-purification device includes a cyclone assembly 100, a converging assembly 200, an ash basin assembly 300, and an outlet pipe 400. The converging assembly 200 is located above the cyclone assembly 100 and communicates with the air outlet 111 of the cyclone assembly 100. The ash basin assembly 300 is located below the cyclone assembly 100 and communicates with the dust outlet 121 of the cyclone assembly 100. The outlet pipe 400 vertically penetrates the cyclone assembly 100. The upper end of the outlet pipe 400 communicates with the converging assembly 200, and the lower end of the outlet pipe 400 passes through the ash basin assembly 300 and communicates with the engine's air intake. Air containing dust and impurities enters the swirl assembly 100 and undergoes swirl motion. The impurity particles spiral downward and fall into the ash basin assembly 300 through the dust outlet 121. The purified air spirals upward and enters the confluence assembly 200 through the air outlet 111, and then flows to the engine through the air outlet pipe 400.

[0038] Furthermore, the cyclone component 100 also includes a filtering structure, which is arranged corresponding to the air outlet 111 of the cyclone component, that is, the filtering structure covers the air outlet 111, and the gas discharged from the air outlet 111 is filtered again before entering the confluence component 200. The filtering structure can use flat filter cotton, filter mesh, etc.

[0039] like Figure 5 and Figure 6As shown, the ash basin assembly 300 includes a carrier unit 310 and a dust collection unit 330 housed within the carrier unit 310. The ash basin assembly 300 has a square cross-section, which increases its capacity for carrying impurities and facilitates the subsequent installation of a retractable, laterally movable connection structure. The upper portion of the carrier unit 310 is tightly connected to a housing 321 surrounding the outer periphery of the cyclone assembly 100. The upper portion of the housing 321 is tightly connected to the top cover of the confluence assembly 200, creating a sealed structure for the air pre-purifier. Only the air inlet and outlet pipe 400 of the cyclone assembly 100 remain, retaining the filtered foreign matter within the device.

[0040] Specifically, the facing surfaces in the figure and the corresponding surfaces are defined as the front side and the rear side, the surfaces on both sides of the front side are defined as the left side and the right side respectively, and the upper and lower surfaces of the front side are defined as the upper side and the lower side respectively. Then, the lower side of the carrying unit 310 of the ash basin assembly 300 is the bottom frame 314, and three closed surfaces are fixedly set on the bottom frame 314, the left side, the rear side and the right side are respectively the first frame 311, the second frame 312 and the third frame 313, a hollow frame 315 is set on the front side of the carrying unit 310, and the upper side of the carrying unit 310 is open and corresponds to the dust outlet 121; the dust collecting unit 330 includes a lower wall 336 corresponding to the bottom frame 314, which is respectively connected to the first frame 311, the second frame 312 and the third frame 313 3, and a door panel 334 is provided between the first wall 331 and the third wall 333. The door panel 334 of the dust collecting unit 330 is provided corresponding to the frame 315 of the carrying unit 310. The upper side of the dust collecting unit 330 is open and corresponds to the dust outlet 121. The length and width of the first wall 331, the second wall 332, and the third wall 333 of the dust collecting unit 330 are respectively smaller than the length and width of the first frame 311, the second frame 312, and the third frame 313 of the carrying unit 310. Therefore, there is a certain gap between the walls of the dust collecting unit 330 and the frames of the carrying unit 310, thereby reducing the sliding friction between the two.

[0041] Of course, the above-mentioned setting method of placing the dust collecting unit 330 into the carrying unit 310 is only a preferred embodiment. Those skilled in the art can also set the carrying unit 310 on the outside of the swirl component shell, and the carrying unit 310 is connected to the dust collecting unit 330 by using slide rails, nesting and other structures, that is, the dust collecting unit 330 is set outside the carrying unit 310, or the dust collecting unit 330 and the carrying unit 310 are connected by other methods, as long as the effect of lateral movement of the dust collecting unit 330 can be achieved.

[0042] Furthermore, a hollowed-out frame 315 is provided on the side of the carrier unit 310. The dust collection unit 330 is positioned in close contact with the frame 315 of the carrier unit 310, thereby hermetically sealing the ash basin assembly 300. To further enhance the sealing between the two, a sealing structure is provided between the dust collection unit 330 and the carrier unit 310. Specifically, a sealing groove is provided outside the frame, and an annular elastic sealing strip is fixedly installed in the sealing groove. The sealing strip is stably embedded and fixed in the sealing groove to enhance the sealing effect between the dust collection unit 330 and the carrier unit 310 and prevent the leakage of air impurities.

[0043] The purpose of setting up the above structure is to accommodate the dust collecting unit 330 inside the carrying unit 310. At the same time, the dust collecting unit 330 can be moved in the front and rear directions to form a movable connection with the carrying unit 310 in the horizontal direction. On the one hand, it is to make full use of the front and rear horizontal space of the dust collecting unit for disassembly, and solve the problem of insufficient longitudinal space of the air pre-purification device and inability to clean and disassemble. On the other hand, the dust collecting unit 330 collects air impurities from the dust outlet 121 from the upper side, and the overflowing air impurities will enter the gap between the dust collecting unit 330 and the carrying unit 310. The carrying unit 310 further collects the air impurities to prevent them from overflowing to the outside of the device. In addition, the lateral movement makes it easy to check the amount of impurities in the dust collecting unit 330 and to load and unload the dust collecting unit 330 from the carrying unit 310.

[0044] Further, such as Figure 3 As shown, the swirl assembly 100 also includes a guide piece 130, which is arranged downward along the shell. Specifically, two guide pieces 130 are symmetrically arranged on the left and right, and the guide piece 130 includes an upper edge and a lower edge. The upper edge is connected to the shell, and the lower edge is respectively arranged on the inner side of the first wall 331 of the dust collecting unit 330 and the inner side of the third wall 333. That is, the guide piece 130 is inserted downward along the inner side of the first wall and the third wall of the dust collecting unit, so as to guide the impurities discharged from the dust outlet into the dust collecting unit along the guide piece 130, and avoid it from entering the gap between the dust collecting unit 330 and the carrying unit 310, thereby improving the dust collection efficiency.

[0045] Further, such as Figure 2 As shown, the swirl assembly also includes a sheet-like rainproof structure 140, which is arranged downward from the upper part of the shell and surrounds the outside of the inner tube of the swirl assembly to prevent rainwater from falling into the air inlet between the inner tube and the outer tube when it rains, thereby causing engine failure. A plurality of longitudinal convex strips can also be provided on the outside of the rainproof structure 140 to form a path to guide rainwater to fall in a concentrated manner to avoid splashing of rainwater.

[0046] Further, such as Figure 5 and Figure 6As shown, an inclined first slope 360 ​​is provided at the bottom of the second frame 312 of the carrying unit 310, and a second slope 370 with the same inclination angle is provided at the bottom of the second wall of the dust collecting unit. An angle greater than 90 degrees is formed between the second slope 370 and the second wall, and another angle greater than 90 degrees is formed between the second slope 370 and the lower wall, so that air impurities falling into the rear side of the dust collecting unit can be easily removed from the above two angles, thereby improving the cleaning efficiency.

[0047] Preferably, the air outlet pipe 400 is arranged near the rear side of the shell 321, and extends downward to the rear side of the ash basin assembly 300. The outer tube 120 of the swirl tube in the swirl assembly 100 is arranged around the front side and left and right sides of the air outlet pipe 400. Accordingly, a groove that can accommodate the air outlet pipe 400 is provided on the ash basin assembly 300. Specifically, a first groove 335 is provided on the second wall 332 of the dust collecting unit 330, and a second groove 316 is provided on the second frame 312 of the carrying unit 310. The first groove 335 can accommodate the second groove 316, and the second groove 316 can accommodate the air outlet pipe 400.

[0048] The purpose of setting up the above-mentioned structure is that by setting up the air outlet pipe 400 on the rear side, after the supporting unit 310 in the ash basin assembly 300 is clamped on the air outlet pipe 400, the position of the air outlet pipe 400 is conducive to the dust collecting unit 330 being placed into the supporting unit 310 from front to back, and the dust collecting unit 330 is a complete integral structure, so that loading and unloading can be completed efficiently in one go.

[0049] Of course, the air outlet pipe 400 can also be set near the side or the middle, and then two dust collecting units 330 can be set opposite to each other on both sides of the air outlet pipe 400, and the supporting unit 310 is opened on both sides thereof to form an inlet and outlet for loading and unloading the dust collecting unit 330, that is, as long as the effect of the horizontal movable connection between the supporting unit 310 and the dust collecting unit 330 in the ash basin assembly 300 can be achieved.

[0050] Preferably, a first convex rib 317 is arranged on the bottom frame 314 of the carrying unit 310 from front to back, the front end of the first convex rib 317 is connected to the bottom of the frame 315 of the carrying unit 310, and the rear end is connected to the middle of the bottom of the second groove 316, and a second convex rib 337 is arranged on the lower wall 336 of the dust collecting unit 330, the front end of the second convex rib 337 is connected to the middle of the bottom of the door panel 334 of the dust collecting unit 330, and the rear end is connected to the middle of the bottom of the first groove 335. At the same time, a concave cavity is arranged under the second convex rib 337 so that the first convex rib 317 can be accommodated in the concave cavity of the second convex rib 337.

[0051] The purpose of setting up the above-mentioned structure is that, through the nesting cooperation of the concave cavity of the first convex rib 317 and the second convex rib 337, a guide path for the loading and unloading route is established when the dust collecting unit 330 of the ash basin assembly 300 is placed in the carrying unit 310. The guide path helps to adjust the left and right positions of the dust collecting unit 330 so that it can be quickly and accurately aligned with the carrying unit 310, and its moving direction is maintained unchanged during the movement, thereby improving the efficiency and ease of loading and unloading of the dust collecting unit 330.

[0052] Further, such as Figure 7 As shown, the bottom of the dust collecting unit 330 also includes a scraper 338, which is a rib structure arranged on the lower surface of the lower wall 336, close to the rear side of the lower wall 336. One end of the scraper 338 abuts against the first frame 311 and the third frame 313 of the carrying unit 310, and the other end abuts against the side of the first groove 335 of the carrying unit 310. The bottom surface of the scraper 338 abuts against the upper surface of the bottom frame 314 of the carrying unit 310, and the impurities in the air flowing out of the dust outlet 121 are removed. The impurities in the air enter the bottom frame 314 of the carrying unit 310 along the gap between the carrying unit 310 and the dust collecting unit 330. When the dust collecting unit 330 is moved from the rear side to the front side and out of the carrying unit 310, the scraper 338 will push the air impurities in front of it forward, that is, unload them from the carrying unit 310 together, thereby clearing the air impurities remaining on the bottom frame 314 of the carrying unit 310, eliminating the step of manual dust removal, enhancing the efficiency of dust removal, and improving convenience.

[0053] Furthermore, the bottom of the dust collecting unit 330 also includes a guide flange 339, which is a rib structure provided on the lower surface of the lower wall 336 and protruding downward along the side of the lower wall 336. The guide flange 339 includes a first side opposite to the scraper 338 near the rear side, a second side and a third side are provided at both ends of the first side along the side of the lower wall 336 and the edge of the second groove 316, and a fourth side is provided along the second rib 337. The bottom surface of the guide flange 339 abuts against the carrying unit 310, wherein the second side and the fourth side both abut against the door panel 334 of the dust collecting unit 330, thereby An L-shaped channel 320 is formed between the edge, and the first edge and the side wall of the carrying unit 310. The entrance of the channel 320 is located on the left and right sides of the second groove 316. After the air impurities flowing out of the dust outlet 121 enter from the entrance of the channel 320, they move along their planned path and accumulate. When the dust collecting unit 330 is moved from the back side to the front side to escape from the carrying unit 310, the scraper 338 will push the air impurities in the channel 320 forward, that is, unload them from the carrying unit 310 together, thereby completely removing the air impurities remaining on the bottom frame 314 of the carrying unit 310, further enhancing the efficiency of dust removal and improving convenience.

[0054] Further, if Figure 8As shown, a fixing structure 340 is provided on the carrier unit 310 and the dust collection unit 330 for detachably fixing the dust collection unit 330 to the carrier unit 310, preventing the dust collection unit 330 from falling off the carrier unit 310 when the device is in operation. The fixing structure 340 includes a latching block provided on the bottom frame 314, the first frame 311, and the third frame 313 of the carrier unit 310, and a hook provided on the door panel 334. The hook and the latching block engage with each other to securely connect the door panel 334 of the dust collection unit 330 to the carrier unit 310. Of course, the positions of the hook and the latching block can also be reversed, with the latching block provided on the door panel 334 and the hook provided on the carrier unit 310. Of course, the fixing structure 340 can also adopt other existing detachable structures, such as magnetic attraction, spring clips, or bolt connections. The number of fixing structures 340 provided can also be selected according to actual needs, with at least one set being sufficient to achieve a secure connection.

[0055] Furthermore, the dust collecting unit 330 also includes a handle 350, which is protruding from the outside of the door panel 334 of the dust collecting unit 330 to facilitate pulling out the dust collecting unit 330, thereby improving the efficiency and ease of loading and unloading.

[0056] like Figures 9 to 12 In the second embodiment shown, the air pre-purification device includes a cyclone assembly 10, a confluence assembly 20, a dust collection assembly 30, an air outlet pipe 90, and an automatic dust discharge device. The confluence assembly 20 is located above the cyclone assembly 10 and is connected to the air outlet end 13 of the cyclone assembly 10. The dust collection assembly 30 is located below the cyclone assembly 10 and is connected to the dust outlet end 14 of the cyclone assembly 10. The automatic dust discharge device is located below the dust collection assembly 30 and is connected to the dust discharge port 31 of the dust collection assembly 30. The air outlet pipe 90 is arranged to penetrate the cyclone assembly 10 in the vertical direction. The upper end of the air outlet pipe 90 is connected to the confluence assembly 20, and the lower end of the air outlet pipe 90 passes through the dust collection assembly 30 and is connected to the air intake of the engine. Air containing dust and impurities enters the cyclone assembly 10, generating a swirling motion. Impurity particles spiral downward, passing through the dust outlet 14 of the cyclone assembly 10 and falling into the dust collection assembly 30. Purified air spirals upward, passing through the air outlet 13 of the cyclone assembly 10 and entering the confluence assembly 20, before flowing toward the engine through the air outlet pipe 90. The cyclone assembly 10 preferably includes multiple cyclone tubes 17 arranged side by side. A greater number of cyclone tubes 17 increases the air intake of the air pre-purifier and improves purification efficiency.

[0057] Further, if Figure 11 and Figure 14As shown, the outlet pipe 90 is disposed near the sides of the cyclone assembly 10 and the dust collection assembly 30, so that the multiple cyclone tubes 17 in the cyclone assembly 10 are concentrated on the same side of the outlet pipe 90, and the ash collection basin 32 in the dust collection assembly 30 are concentrated on the same side of the outlet pipe 90. The phrase "concentrated on the same side of the outlet pipe" specifically means that at least a portion of the sidewall of the outlet pipe 90 is located outside the cyclone assembly 10 and the ash collection basin 32. In this case, the cyclone assembly 10 and the ash collection basin 32 are both concentrated on the side corresponding to the other portion of the sidewall of the outlet pipe 90.

[0058] With this arrangement, the space for accommodating dust in the ash collecting basin 32 can be better concentrated, and the ash discharge operation of the ash collecting basin 32 is also more convenient. Specifically, the ash collecting basin 32 as a whole can be set to a shape similar to a funnel, and a single lowest point is formed at the bottom of the ash collecting basin 32. An ash discharge port 31 is opened at the lowest point, and the dust in the ash collecting basin 32 is gathered toward the lowest point and discharged centrally through the ash discharge port 31. An automatic ash discharge device can be set at the ash discharge port 31 to automatically discharge the dust in the ash basin. A ash discharge structure that can be manually opened or closed, such as a screw cover or a flip cover, can also be set. When the dust in the ash collecting basin 32 accumulates to a certain amount, the ash is discharged by opening the cover at the ash discharge port 31. Since the ash collecting basin 32 is centrally arranged on the same side of the air outlet pipe 90, a single ash discharge port 31 for centralized ash discharge can be formed on the ash collecting basin 32. When discharging ash, only one ash discharge port 31 needs to be opened and closed, which simplifies the ash discharge operation.

[0059] In addition, the ash collecting basin 32 is centrally arranged on the same side of the air outlet pipe 90, which makes it easier to set the ash collecting basin 32 in a detachable form. Figures 1 to 8 In the embodiment 1 shown in the figure, with this arrangement, not only is the ash collecting space of the ash basin 32 centrally arranged, but also, while keeping the outlet pipe 90 connected to the engine air intake end, the ash basin 32 as an integral structure can be directly removed from the lower part of the swirl assembly 10 and separated from the outlet pipe 90, which also makes the ash discharge operation more convenient.

[0060] Specifically, such as Figure 11 and Figure 14As shown, the swirl assembly 10 includes an upper plate 11 and a lower plate 12. The inner tube 15 of the swirl tube 17 is connected to the bottom of the upper plate 11, and the air outlet end 13 of the inner tube 15 is connected to the space above the upper plate 11. The outer tube 16 of the swirl tube 17 is connected to the top of the lower plate 12, and the dust outlet end 14 of the outer tube 16 is connected to the space below the lower plate 12. The inner tube 15 can be connected to the upper plate 11 separately or integrally, and the outer tube 16 can be connected to the lower plate 12 separately or integrally. The connecting end of the inner tube 15 extends into the connecting end of the outer tube 16, connecting to the outer tube 16, and forming an air inlet of the swirl tube 17 at the connection, and the air inlet is provided with swirl blades. An upper cover is sealed above the upper plate 11 , and the upper cover and the upper plate 11 together form a confluence assembly 20 to collect the clean air purified by the cyclone tube 17 and send it into the outlet pipe 90 ; the dust collecting assembly 30 is sealed below the lower plate 12 .

[0061] Furthermore, the air outlet pipe 90 is composed of an upper pipe 91 and a lower pipe 92. Figure 12 As shown, the upper tube 91 and the inner tubes 15 of the multiple vortex tubes 17 are integrally formed with the upper plate 11, and the upper tube is offset and arranged on one side of the upper plate 11 so that the inner tubes 15 of the multiple vortex tubes 17 are concentrated on the same side of the upper tube; the lower tube 92 and the outer tubes 16 of the multiple vortex tubes 17 are integrally formed with the lower plate 12, and the lower tube is offset and arranged on one side of the lower plate 12 so that the outer tubes 16 of the multiple vortex tubes 17 are concentrated on the same side of the lower tube.

[0062] A fixing component is provided between the upper tube 91 and the lower tube 92 of the air outlet pipe 90. When assembling the swirl component 10, the one-piece upper plate 11 is directly buckled on the one-piece lower plate 12, so that the upper tube 91 and the lower tube 92 of the air outlet pipe 90 are opposite to each other and connected to each other, so that the inner tube 15 of each swirl tube 17 extends into the corresponding outer tube 16, and then the fixing component is tightened to complete the assembly process of the swirl component 10. One end of the assembled air outlet pipe 90 is connected to the air outlet end 13 of the swirl tube 17 for discharging purified air, and the other end is connected to the engine air intake.

[0063] During use, the air pre-purifier of the present invention has its outlet pipe 90 fixedly connected to the engine's air intake. This serves to secure the entire air pre-purifier, significantly impacting the overall structural strength, connection stability, and operational stability of the device. The aforementioned integrated design ensures stable connections between the outlet pipe 90 and the swirl assembly 10, confluence assembly 20, and dust collection assembly 30, even when the outlet pipe 90 is offset and the swirl tube 17 and ash collection basin 32 are centrally located. This enhances the overall structural strength of the air pre-purifier and further ensures its installation and operational stability.

[0064] Furthermore, the integrated design simplifies the installation process for connecting the outlet pipe 90 and the swirl assembly 10. The outlet pipe 90, upper plate 11, and lower plate 12 only require a single sealing surface, significantly improving the overall sealing performance of the device. Preferably, a sealing ring is provided at the connection between the upper tube 91 and the lower tube 92 to further enhance the sealing performance.

[0065] Further, if Figures 11 to 12 As shown, the multiple cyclone tubes 17 in the cyclone assembly 10 are arranged in a semicircular shape around the air outlet pipe 90. This arrangement is conducive to fully utilizing the space of the cyclone assembly 10, increasing the number of cyclone tubes 17 in the cyclone assembly 10, and thus improving the air purification efficiency.

[0066] The ash collecting basin 32 is detachably connected to the bottom of the cyclone assembly 10. A groove structure 33 with a single-side opening is formed on the ash collecting basin 32. The outlet pipe 90 can be inserted into the groove structure 33 through the opening, so that the ash collecting basin 32 and the outlet pipe 90 can be embedded in each other without hindering the detachment of the ash collecting basin 32 and the outlet pipe 90. The ash collecting basin 32 is provided with extensions on both sides of the groove structure 33. The extensions are extended toward the side walls of the outlet pipe 90 to increase the area of ​​the upper opening of the ash collecting basin 32, so that the ash collecting basin 32 can be arranged corresponding to a larger number of cyclone tubes 17 in the cyclone assembly 10. On the one hand, by cooperating with the cyclone assembly 10, the air purification efficiency is improved. On the other hand, the volume of the ash collecting basin 32 can be increased to accommodate more dust.

[0067] In the present invention, the air pre-purification device as a whole can be set to the rectangular structure shown in Example 1, or it can be set to the octagonal structure shown in Example 2. In addition, the air pre-purification device as a whole can also be set to a circular or other polygonal structure according to actual needs such as installation space. For the above-mentioned situation where the outlet pipe 90 is offset and the ash collecting basin 32 and the swirl assembly 10 are centrally arranged, it is more advantageous to set the air pre-purification device as a whole in a rectangular or polygonal structure. Specifically, in Example 1 and Example 2, the outlet pipe 90 is set near the middle position of one of the side edges of the swirl assembly 10. At this time, there is more space on the left and right sides of the outlet pipe 90 for arranging the swirl tube 17. When the swirl assembly 10 occupies the same space, it is more conducive to increasing the number of swirl tubes 17 arranged and improving the filtration efficiency. At the same time, the center of gravity of the swirl assembly 10 as a whole can be closer to the outlet pipe 90, further enhancing the stability of the overall structure of the air pre-purification device.

[0068] Of course, in addition to the above-mentioned preferred embodiments, the air outlet pipe 90 can also be set at the top corner of the rectangular or polygonal cyclone component 10, or set close to the circumference of the circular cyclone component 10. At the same time, the shape of the ash collecting basin 32 is set accordingly, which can basically achieve the technical effect achieved by the utility model.

[0069] Specifically, such as Figure 15 and Figure 16 As shown, the ash collecting basin 32 includes an upper wall 34 and a lower wall 35. The upper wall 34 is formed into an octagon by the upper wall surface, and the upper wall surface close to the air outlet pipe 90 is recessed toward the middle of the ash collecting basin 32 to form a tubular chamber that can accommodate the air outlet pipe 90. The lower wall 35 is composed of four lower wall surfaces that are inclined and converge toward the ash discharge port 31. The top of the lower wall surface is connected to the upper wall surface, and the connection between the left and right sides of the lower wall surface forms an angle, so that the dust and impurities falling into the ash collecting basin 32 are gathered toward the ash discharge port 31 along the groove 36 formed by the angle.

[0070] On the one hand, the above-mentioned setting method can make the upper part of the ash collecting basin 32 have an opening area as large as possible to correspond to more dust outlet ends 14, that is, increase the steam intake of the air pre-purification device. On the other hand, it can make the dust and impurities in the ash collecting basin 32 be discharged more directly and fully, reducing the dead corners where impurities may remain.

[0071] Preferably, the center point of the ash discharge port 31 below the ash collecting basin 32 is located on the lower wall surface on the front side, so that the ash discharge port 31 as a whole is more inclined to be set on the lower wall surface close to the front side. This setting method can further increase the area of ​​the opening above the ash discharge port 31 to facilitate dust to enter the ash discharge port 31.

[0072] Furthermore, when the ash basin 32 is installed at the bottom of the cyclone assembly 10, it must align with the dust outlet ends 14 of the cyclone tubes 17, ensuring that the dust outlet ends 14 of all cyclone tubes 17 are contained within the upper opening of the ash basin 32. Furthermore, a sealed connection between the ash basin 32 and the cyclone assembly 10 is required. To this end, a first sealing structure for sealing the connection and a positioning structure for facilitating quick alignment and installation of the ash basin 32 are provided between the ash basin 32 and the cyclone assembly 10.

[0073] Specifically, the matching installation structure of the ash collecting basin 32 and the cyclone assembly 10 can have various forms. For example, a mounting groove is set on the lower plate 12, and the upper edge of the ash collecting basin 32 is inserted into the corresponding mounting groove to achieve the installation connection of the ash collecting basin 32.

[0074] Preferably, a sealing strip is also provided on the lower plate 12 of the swirl assembly 10. The sealing strip is located in an annular mounting groove and is arranged corresponding to the upper edge position of the ash collecting basin 32. When the ash collecting basin 32 is installed on the lower plate 12, the sealing strip is exactly located at the position where the basin body and the lower plate 12 are connected, thereby enhancing the sealing effect between the ash collecting basin 32 and the swirl assembly 10.

[0075] Further, if Figure 1 and Figure 15 As shown, when an automatic ash discharge device is used for ash discharge, a housing is further provided on the ash collection basin, and a mounting chamber is formed within the housing. The automatic ash discharge device includes an ash discharge valve assembly and an ash discharge control assembly. The ash discharge valve assembly is installed at the ash discharge port at the bottom of the dust collection unit, and the ash discharge control assembly is disposed in the mounting chamber of the housing. The ash discharge control assembly is connected to the ash discharge valve assembly to control the opening and closing of the ash discharge valve assembly.

[0076] Further, if Figures 11 to 12 As shown, the extended length of the connection end of the lower tube 92 of the air outlet pipe 90 is not greater than the extended length of the connection end of the outer tube 16 of the vortex tube 17, and the extended length of the connection end of the upper tube 91 of the air outlet pipe 90 is not greater than the extended length of the connection end of the inner tube 15 of the vortex tube 17. With this arrangement, the upper plate 11 structure and the lower plate 12 structure can be integrally formed without increasing the volume of the mold of the upper plate 11 structure and the lower plate 12 structure, thereby reducing the mold cost and the production cost of the product.

[0077] Preferably, the extension length of the connection end of the lower tube 92 of the air outlet pipe 90 is equal to the extension length of the connection end of the outer tube 16 of the swirl tube 17, that is, the extension length of the lower tube 92 is made as long as possible without increasing the volume of the structural mold of the lower plate 12. This arrangement can make the fixed connection position of the upper tube 91 and the lower tube 92 closer to the upper plate 11, making it convenient to operate the fixed component.

[0078] Further, if Figures 9 to 12 As shown, the rainproof air intake assembly is arranged around the periphery of the cyclone assembly 10, located between the confluence assembly 20 and the dust collection assembly 30, to protect the cyclone tube 17 in the cyclone assembly 10. The rainproof air intake assembly includes a mesh cover 41 and a rainproof baffle 42. A first annular mounting groove is provided at the edge of the upper plate 11, and a second annular mounting groove is provided at the edge of the lower plate 12. The upper edge of the annular mesh cover is embedded in the first mounting groove, and the lower edge is embedded in the second mounting groove, so that the mesh cover is stably installed outside the cyclone assembly 10.

[0079] The rain shield 42 is disposed between the mesh cover 41 and the plurality of vortex tubes 17 and is integrally formed with the upper plate 11. The rain shield 42 extends vertically downward from the lower surface of the upper plate 11 toward the air inlet 51 of the vortex tube 17, extending to a position where it can block the air inlet 51 of the vortex tube 17, thereby shielding the air inlet 51 and preventing rainwater from entering. A support structure is provided between the rain shield 42 and the mesh cover 41. Once the mesh cover 41 or the rain shield 42 is deformed by external force, the support structure can be supported between the mesh cover 41 and the rain shield 42, so that the mesh cover 41 and the rain shield 42 always maintain a spaced-apart state, thereby preventing the mesh cover 41 and the rain shield 42 from fitting together and blocking the normal air intake of the mesh cover 41 air inlet. The design of the rain shield 42 being integrally formed with the upper plate 11 is conducive to simplifying the assembly process, improving production efficiency, and reducing production costs.

[0080] The terms “above”, “below” and “within” mentioned above include the number itself; the terms “exceed” and “outside” do not include the number itself.

[0081] The present invention has been further described above with the aid of specific embodiments. However, it should be understood that the specific descriptions herein should not be construed as limiting the essence and scope of the present invention. Any modifications made to the above embodiments by a person skilled in the art after reading this specification are within the scope of protection of the present invention. The various specific technical features described in the above specific embodiments may be combined in any suitable manner unless there is any contradiction. To avoid unnecessary repetition, the present invention will not further describe various possible combinations in the embodiments.

[0082] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

Claims

1. An air pre-purification device, characterized in that: It includes a converging assembly, a swirl assembly, a dust collecting assembly and an air outlet pipe. An air outlet is formed above the swirl assembly, and the converging assembly is arranged corresponding to the air outlet. A dust outlet is formed below the swirl assembly, and the dust collecting assembly is arranged corresponding to the dust outlet. The air outlet pipe is connected to the converging assembly, and the air outlet pipe passes through the swirl assembly and the dust collecting assembly in the vertical direction, and is arranged close to the sides of the swirl assembly and the dust collecting assembly, so that the multiple swirl tubes in the swirl assembly and the ash collecting basin in the dust collecting assembly are concentrated on the same side of the air outlet pipe.

2. The air pre-purification device according to claim 1, characterized in that: The swirl assembly includes an upper plate, the swirl tube includes an inner tube, and the air outlet pipe includes an upper tube. The upper tube and the inner tubes of multiple swirl tubes are integrally formed with the upper plate. The upper tube is offset and arranged on one side of the upper plate so that the inner tubes of multiple swirl tubes are concentrated on the same side of the upper tube.

3. The air pre-purification device according to claim 1 or 2, characterized in that: The swirl assembly includes a lower plate, the swirl tube includes an outer tube, and the air outlet pipe includes a lower tube. The lower tube and the outer tubes of multiple swirl tubes are integrally formed with the lower plate, and the lower tube is offset and arranged on one side of the lower plate so that the outer tubes of multiple swirl tubes are concentrated on the same side of the lower tube.

4. The air pre-purification device according to claim 1, characterized in that: The multiple swirl tubes in the swirl assembly are arranged in a semicircle around the air outlet pipe.

5. The air pre-purification device according to claim 1, characterized in that: A groove structure with a single-side opening is formed on the ash collecting basin, and the air outlet pipe is embedded in the groove structure through the opening, so that the ash collecting basin and the air outlet pipe are embedded in each other.

6. The air pre-purification device according to claim 5, characterized in that: The ash collecting basin is provided with extension parts on both sides of the groove structure, and the extension parts are extended toward the side walls of the air outlet pipe to increase the area of ​​the upper opening of the ash collecting basin.

7. The air pre-purification device according to claim 1, characterized in that: The ash collecting basin includes an upper wall and a lower wall connected to each other. The upper wall is surrounded by multiple upper wall surfaces, and the upper wall close to the air outlet pipe is recessed toward the middle of the ash collecting basin to form a tubular chamber that can accommodate the air outlet pipe. The lower wall is surrounded by multiple inclined lower wall surfaces, and the bottom converges to form an ash discharge port.

8. The air pre-purification device according to claim 7, characterized in that: The automatic dust discharge device is located below the dust collecting component and is connected to the dust discharge port of the dust collecting component.

9. The air pre-purification device according to claim 8, characterized in that: The automatic ash discharge device includes an ash discharge valve body assembly and an ash discharge control assembly. The ash discharge valve body assembly is installed at the ash discharge port at the bottom of the dust collection unit. The ash discharge control assembly is connected to the ash discharge valve body assembly to control the opening and closing of the ash discharge valve body assembly.

10. The air pre-purification device according to claim 9, characterized in that: A accommodating cover is provided on the ash collecting basin, and the ash discharge control component is arranged in the accommodating cover.

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