Automatic ash discharge prefilter and air cleaning device

Abstract

The utility model discloses an automatic ash removal prefilter, including dust collection unit, connecting unit and ash removal fan subassembly, dust collection unit and ash removal fan subassembly are communicated through connecting unit, and ash removal fan subassembly can exhaust to automatic ash removal prefilter outside, and dust in dust collection unit is in order through connecting unit and ash removal fan subassembly and is discharged to automatic ash removal prefilter outside. The utility model discloses that the ash removal is big and can continue to remove ash, and effectively increase the total amount and speed of ash removal in unit time, and the air intake of ash removal fan subassembly is sufficient, improves ash removal efficiency, and the airflow movement in automatic ash removal prefilter is smooth, and the negative pressure formed is big, is favorable to the rapid discharge of dust, is easy to disassemble and maintain, is adapted to the air cleaner of various specifications of existing, and the versatility is strong, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to engine intake filter technology field especially, relate to a kind of automatic dust discharge prefilter and the air purification device containing the automatic dust discharge prefilter. BACKGROUND

[0002] Engine needs to inhale air when working, in order to reduce or prevent dust impurities in air into engine with airflow, air cleaner is usually set in engine intake system, and air is filtered by filter element. Filter element has good filtering effect, but the cost of frequent replacement is very high, and it is inconvenient to replace.

[0003] The existing engine intake system is additionally provided with prefilter before traditional air cleaner, to prefilter the air entering into filter element. Pre-filter can pre-filter a large amount of dust and impurities, so that air cleaner can keep clean for a long time, so that the engine runs more powerfully, and the service life of the filter element in the air cleaner is prolonged, the replacement frequency is reduced, and the maintenance cost of the engine is reduced.

[0004] However, a large amount of dust and impurities filtered by the pre-filter are collected in the closed dust collecting basin, which has limited capacity. The dust and impurities need to be cleaned in time after being filled, and the power machine loaded with the pre-filter needs to be stopped, and then the dust collecting basin is opened manually for cleaning. If the cleaning is not in time, the engine may be damaged. Therefore, the structure of the pre-filter greatly reduces the working efficiency, increases the working intensity and repetitive labor of personnel, has poor convenience and low economic benefit. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an automatic dust discharge prefilter, which can automatically realize dust discharge action and improve the working efficiency of dust discharge and operation convenience. The specific technical scheme is as follows:

[0006] An automatic dust discharge prefilter includes a dust collecting unit, a connecting unit and a dust discharge fan assembly. The dust collecting unit and the dust discharge fan assembly are communicated through the connecting unit. The dust discharge fan assembly can discharge air outside the automatic dust discharge prefilter, so that the dust in the dust collecting unit is sequentially discharged to the outside of the automatic dust discharge prefilter through the connecting unit and the dust discharge fan assembly.

[0007] Further, the dust discharge fan assembly includes a shell, and the shell is formed with a communicating suction pipe and a discharge pipe. The suction pipe is communicated with the connecting unit, and the gas in the connecting unit can flow from the suction pipe to the discharge pipe.

[0008] Further, the connecting unit comprises at least two extension assemblies and a communication assembly, the extension assemblies are respectively provided with upper interfaces and lower interfaces at two ends, the upper interfaces are communicated with the dust collecting unit, and the lower interfaces are communicated with the dust discharging fan assembly through the communication assembly.

[0009] Further, the communication assembly comprises a second communication port and at least two first communication ports, the number of the first communication ports matches the number of the extension assemblies, the at least two first communication ports are respectively communicated with the lower interfaces of the at least two extension assemblies, and the second communication port is communicated with the dust discharging fan assembly.

[0010] Further, the dust collecting unit comprises at least two dust discharging ports, the dust discharging ports are respectively arranged in correspondence with the upper interfaces of the connecting unit, and the second communication port is communicated with the suction pipe of the dust discharging fan assembly.

[0011] Further, the dust discharging fan assembly further comprises a blocking part and a fourth port, the fourth port is arranged at one end of the exhaust pipe, and the blocking part is connected with the fourth port.

[0012] Further, the dust discharging fan assembly further comprises a fan blade arranged in the shell, and the fan blade is made of aluminum alloy.

[0013] Further, the extension assembly is a deformable tubular structure.

[0014] Further, the automatic dust discharging pre-filter further comprises a dust separating unit, a clean air collecting unit and a clean air channel, one end of the dust separating unit is communicated with the clean air collecting unit, the other end of the dust separating unit is communicated with the clean air collecting unit, and the clean air collecting unit is communicated with the clean air channel.

[0015] The air purification device comprises the automatic dust discharging pre-filter.

[0016] The automatic dust discharging pre-filter has the following advantages.

[0017] 1. The connecting unit is arranged between the dust collecting unit and the dust discharging fan assembly, so that negative pressure is formed in the connecting unit, and dust in the dust collecting unit is discharged to the outside under the action of the negative pressure, thereby realizing the effect that the dust in the dust collecting unit is automatically discharged to the outside.

[0018] 2. The dust discharging amount is large and the dust can be continuously discharged, so that the total amount and speed of dust discharging per unit time are effectively increased, and the dust discharging efficiency is improved.

[0019] 3. The air inlet of the dust discharging fan assembly is sufficient, so that the dust discharging efficiency is improved.

[0020] 4. The air flow in the automatic dust discharging pre-filter moves smoothly, the negative pressure formed is large, and the dust is quickly discharged.

[0021] 5. Easy to disassemble and maintain, suitable for existing various specifications of air cleaner, strong versatility, and reduced production cost. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic view of the air purification device of the present application.

[0023] Figure 2 is a sectional view of the filtering unit in the automatic dust discharging pre-filter of the present application.

[0024] Figure 3 is a schematic view of the dust discharging fan assembly in the automatic dust discharging pre-filter of the present application. DETAILED DESCRIPTION

[0025] As shown in Figure 1 and Figure 2 , the air purification device comprises a pre-filter and an air cleaner arranged from top to bottom, the air containing dust and impurities outside is firstly filtered by the pre-filter, the dust and impurities enter the dust collecting unit of the pre-filter, the filtered air enters the air cleaner for second filtration, the dust is blocked by the filter core in the air cleaner, and the clean air enters the engine through the inside of the filter core.

[0026] The automatic dust discharging pre-filter of the present application comprises a filtering unit, a connecting unit and an automatic dust discharging unit connected in sequence, the filtering unit has a cyclone tube capable of separating dust and impurities in the air, the cyclone tube is composed of an inner tube and an outer tube, the inner tube comprises an air outlet end and a connecting end, the outer tube comprises a dust outlet end and a connecting end, the connecting end of the inner tube extends into the connecting end of the outer tube, and an annular air inlet is formed at the connection; a cyclone vane is arranged at the air inlet, the air containing dust and impurities enters the cyclone tube through the air inlet and generates cyclone under the action of the cyclone vane; the dust and impurities move spirally along the outer tube and are discharged through the dust outlet end of the outer tube, and the purified air moves spirally along the inner tube and is discharged through the air outlet end of the inner tube; the air outlet end of the inner tube of the cyclone tube can be communicated with the air cleaner or the engine through an air outlet tube or other connecting piece, so as to guide the purified air to the air cleaner or the engine.

[0027] Specifically, the filtering unit usually comprises a plurality of cyclone pipes arranged side by side, and the air outlet ends of the inner pipes of the plurality of cyclone pipes can first collect the purified air together and then guide the purified air to the air cleaner or the engine through a connecting member such as an air outlet pipe. For example, a flow collecting chamber can be arranged in the filtering unit, the air outlet end of each inner pipe of the cyclone pipes is communicated with the flow collecting chamber, and one end of the air outlet pipe is arranged in communication with the flow collecting chamber and the other end is arranged in communication with the engine. Of course, the dust outlet ends of the outer pipes of the plurality of cyclone pipes can first collect the separated dust and impurities, for example, a dust collecting unit can be arranged in the filtering unit, the dust outlet end of each outer pipe of the cyclone pipes is communicated with the dust collecting unit, so that the separated dust and impurities can be collected, and the dust collecting unit is communicated with the automatic dust discharging unit to realize automatic dust discharging.

[0028] The automatic dust discharging unit comprises a dust discharging fan assembly and a dust discharging control assembly, the connecting unit is arranged at the dust discharging port at the bottom of the dust collecting unit, the dust discharging control assembly is connected with the dust discharging fan assembly and is used for controlling the opening and closing of the dust discharging fan assembly, wherein the dust discharging fan assembly is directly connected with the connecting unit, the gas in the connecting unit is guided to be discharged downward through the dust discharging fan assembly, and then negative pressure is generated in the connecting unit, so that the dust in the dust collecting unit and the connecting unit is discharged downward along the gas flow path.

[0029] In order to better understand the purpose, structure and function of the utility model, the automatic dust discharging pre-filter and the air purification device will be further described in detail below with reference to the specific structure of the automatic dust discharging pre-filter and the accompanying drawings.

[0030] As shown in Figure 1 The air purification device comprises an automatic dust discharging pre-filter and an air cleaner 200 arranged from top to bottom, the automatic dust discharging pre-filter comprises a filtering unit 300, a connecting unit 40 and an automatic dust discharging unit connected in sequence from top to bottom, a dust separating unit 10 for separating dust and impurities in air is arranged above the filtering unit, and a dust collecting unit 20 is arranged below the filtering unit, the dust separating unit 10 is usually a cyclone pipe 11, and external air containing dust is separated into clean air and dust in the cyclone pipe 11, the clean air enters a clean air collecting unit 30 upward and then flows into the air cleaner 200 downward through a clean air passage arranged in the middle of the filtering unit 300.

[0031] As shown in Figure 1As shown, the air filter 200 has a cylindrical structure with its axis oriented left-right, including a sealing shell and a filter element installed inside the sealing shell. End caps are used to seal both sides of the sealing shell, with the right end cap having an air outlet pipe 201. The end caps on both sides of the sealing shell are detachably installed; preferably, the end caps are connected to the sealing shell using snap-fit ​​connections. The upper end of the sealing shell is sealed to the lower end of the clean air passage 7. Air enters the sealing shell after initial filtration by the filter unit 300, and then passes through the filter element under negative pressure to obtain clean air. The air after the second filtration enters the engine through the air outlet pipe 201.

[0032] Among them, such as Figure 1 and Figure 2 As shown, the dust separated by the cyclone tube 11 falls downward into the dust collection unit 20. The dust collection unit 20 has two ash discharge ports 21 at the bottom. The automatic ash discharge unit includes an ash discharge fan assembly 100 and an ash discharge control assembly (not shown in the figure). The ash discharge fan assembly 100 and the ash discharge ports 21 are detachably connected through the connecting unit 40 and maintain a high degree of sealing. The ash discharge fan assembly 100 is started by controlling the ash discharge control assembly to generate negative pressure in the connecting unit 40, which guides the dust in the dust collection unit 20 to be discharged downward.

[0033] The dust collection unit 20 has two ash discharge ports 21 at its bottom. The connecting unit 40 includes two extension components 41 and one connecting component 42. The extension components 41 are hollow tubular structures, including an upper interface 43 and a lower interface 44. The two upper interfaces 43 are respectively connected to the two ash discharge ports 21 at the bottom of the dust collection unit 20. The upper interfaces 43 and the ash discharge ports 21 are sealed together by clamps. The connecting component 42 is a hollow Y-shaped tee structure, including two upward first connecting ports 45 and a downward second connecting port 46. The two first connecting ports 45 are respectively connected to the upper lower interface 44. The two can be connected by clamps or sealing tape. The second connecting port 46 is connected to the ash discharge fan assembly 100. The two are connected by clamps. The dust discharged from the two ash discharge ports 21 is merged into a connecting component 42 through the extension components 41 and then enters the ash discharge fan assembly 100.

[0034] The purpose of setting the above structure is that on one hand, the dust discharged from the two dust outlets 21 is concentrated to one area through the connecting unit 40, thereby solving the problem of needing to install two dust exhaust fan assemblies 100 for automatically discharging dust from the two dust outlets 21 at the same time, saving the cost, and on the other hand, the problem of insufficient installation space below the dust outlet 21 or insufficient space for the dust exhaust fan assembly 100 to discharge dust outward after installation is solved through the extension assembly 41, and the dust exhaust control assembly and the dust outlet 21 are connected through the connecting unit according to actual needs, thereby improving the adaptability and compatibility of the automatic dust discharge pre-filter and the air purification device. The connecting unit can be made of soft plastic pipe or hard metal pipe, and preferably made of soft deformable material to adapt to different installation spaces.

[0035] The connecting unit 40 can also be provided as one extension assembly 41 or a plurality of extension assemblies 41, and when the connecting unit 40 is provided as one extension assembly 41, the communication assembly is not needed, and the lower interface 44 is directly communicated with the dust exhaust fan assembly 100 to realize automatic dust discharge; when there are a plurality of dust outlets, a corresponding number of extension assemblies 41 are matched, and the communication assembly 42 is provided with a corresponding number of first communication ports 45, and as long as the effect of only providing one dust exhaust fan assembly 100 and the dust exhaust fan assembly 100 being easy to install can be achieved.

[0036] It should be noted that the connecting unit 40 can also be an adapter for the bottom dust outlet 21 of the dust collection unit 20 or an integral structure with the dust collection unit 20, as long as the effect of coupling and connecting the dust outlet and the dust exhaust fan assembly can be achieved. The coupling in the utility model is a connection mode, which includes direct connection of the two structures and indirect connection between the two structures.

[0037] As shown in FIG. 1, Figure 3 The dust exhaust fan assembly 100 includes a shell 101, a suction pipe 102, a discharge pipe 103 and an input port 104, the dust exhaust control assembly is connected with the input port 104, a driving motor 105 and a fan blade are arranged in the shell 101, the fan blade (not shown in the figure) is arranged above the driving motor 105, the suction pipe 102 includes a first port 108 and a second port 107, the first port 108 is communicated with the top of the shell 101, the second port 107 is communicated with the second communication port 46 of the communication assembly 42, the discharge pipe 103 includes a third port 109 and a fourth port 110, the third port 109 is connected to the right side of the shell 101 and is arranged opposite to the fan blade, the fourth port 110 is communicated with the outside, and the fourth port 110 is provided with a blocking part 106 outside to prevent air from being sucked back into the inside of the fan assembly.

[0038] The working principle of the automatic dust discharging unit is that the driving motor 105 rotates to drive the fan blade to rotate, the blades of the fan blade rotate spirally to generate centrifugal force, air in the connecting unit 40 above is sucked downward, and the air is discharged outward after passing through the suction pipe 102, the shell 101 and the discharge pipe 103 in turn. It can be understood that the connecting unit 40 is in communication with the dust collecting unit 20, and the air in the connecting unit 40 is sucked downward to generate negative pressure in the connecting unit 40, and then the dust in the dust collecting unit 20 moves downward under the action of the negative pressure at the bottom, and the dust is sucked by the dust discharging fan assembly 100 and discharged to the outside.

[0039] The blocking part 106 can be a normally closed elastic duckbill-shaped structure made of rubber, or a plate-shaped structure connected with a spring and capable of automatic reset to realize sealing. When the automatic dust discharging unit is started, the downward airflow formed by the dust discharging fan assembly blows open the blocking part 106. When the automatic dust discharging unit is closed or fails to stop, the blocking part 106 can be closed by automatic reset or shape recovery to prevent external air from being sucked back.

[0040] Further, the blades of the fan blade are made of high-hardness materials such as aluminum alloy and metal to withstand long-term impact and wear of dust and particles, enhance the service life of the blades, and avoid frequent replacement of the dust discharging fan assembly.

[0041] The control mode of the air purification device is that when working, the dust discharging fan assembly 100 is started first, and then the engine is started, the air is discharged outward through the discharge pipe 103 of the fan, and a negative pressure environment is formed in the connecting unit 40 and the dust collecting unit 20, so that when the engine is started, the external air containing dust or the residual dust in the dust collecting unit 20 is not sucked back into the air filter 200, and the filtering efficiency is improved. When it is finished, the engine is closed first, and then the dust discharging fan assembly 100 is closed, which is also to avoid that the external air containing dust or the residual dust in the dust collecting unit 20 is sucked back into the air filter 200. Correspondingly, the dust discharging control assembly can be provided with a delay function to automatically realize the control mode of closing the engine first and then closing the dust discharging fan assembly 100, and improve the degree of automation control.

[0042] The above "above", "below", "within", including the number; the "more than", "not including", not including the number.

[0043] The utility model is further described above with the help of specific embodiments, but it should be understood that the specific description here should not be understood as limiting the essence and scope of the utility model, and various modifications made by those of ordinary skill in the art after reading the specification to the above embodiments all belong to the scope protected by the utility model. In the above specific embodiments, various specific technical features described can be combined in any appropriate manner without contradiction. In order to avoid unnecessary repetition, various possible combinations are not described again in the embodiments of the utility model.

[0044] If the embodiments of the utility model involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.

Claims

1. An automatic ash discharge prefilter, characterized by, The dust collecting unit, the connecting unit and the dust discharging fan assembly are communicated through the connecting unit, the dust discharging fan assembly can discharge air outside the automatic dust discharging pre-filter, and the dust in the dust collecting unit is sequentially discharged to the outside of the automatic dust discharging pre-filter through the connecting unit and the dust discharging fan assembly.

2. The automatic ash removal prefilter according to claim 1, characterized in that The dust discharging fan assembly comprises a shell, a suction pipe and a discharge pipe are formed on the shell and are communicated, the suction pipe is communicated with the connecting unit, and the gas in the connecting unit can flow from the suction pipe to the discharge pipe.

3. The automatic ash discharge prefilter according to claim 1 or 2, characterized in that The connecting unit comprises at least two extension assemblies and a communication assembly, the two ends of the extension assembly are respectively provided with an upper interface and a lower interface, the upper interface is communicated with the dust collecting unit, and the lower interface is communicated with the dust discharging fan assembly through the communication assembly.

4. The automatic ash discharge prefilter according to claim 3, wherein The communication assembly comprises a second communication port and at least two first communication ports, the number of the first communication ports matches the number of the extension assemblies, the at least two first communication ports are respectively communicated with the lower interfaces of the at least two extension assemblies, and the second communication port is communicated with the dust discharging fan assembly.

5. The automatic ash discharge prefilter according to claim 4, characterized in that The dust collecting unit comprises at least two dust discharging ports, the dust discharging ports are respectively and correspondingly arranged and communicated with the upper interfaces of the connecting unit, and the second communication port is communicated with the suction pipe of the dust discharging fan assembly.

6. The automatic ash removal prefilter according to claim 2, wherein The dust discharging fan assembly further comprises a blocking part and a fourth port, the fourth port is arranged at one end of the discharge pipe, and the blocking part is connected with the fourth port.

7. The automatic ash removal prefilter according to claim 2, wherein The dust discharging fan assembly further comprises a fan blade arranged in the shell, and the fan blade is made of aluminum alloy.

8. The automatic ash removal prefilter according to claim 3, wherein The extension assembly is a deformable tubular structure.

9. The automatic ash removal prefilter of claim 1, wherein The dust separating unit, the clean air collecting unit and the clean air channel are further provided, one end of the dust separating unit is communicated with the clean air collecting unit, the other end of the dust separating unit is communicated with the clean air collecting unit, and the clean air collecting unit is communicated with the clean air channel.

10. An air purification device, characterized by, The automatic dust discharging pre-filter comprises the automatic dust discharging pre-filter according to any one of claims 1 to 9.

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