Dust collector with two-stage spiral separation structure

Abstract

The utility model provides a dust collector with a two-stage spiral separation structure, which comprises a first-stage spiral separator, a second-stage spiral separator, a first dust collection component and a second dust collection component, the first-stage spiral separator and the second-stage spiral separator are sequentially arranged between a dust collection inlet of the dust collector and the filtering structure in a communicating mode in the gas flowing direction. The first spiral channel utilizes the centrifugal force principle to primarily separate large and heavy particles in air flow, the separated particles fall into the first dust collection assembly, and primary particle separation and collection are completed; the second spiral channel also utilizes the centrifugal force principle to separate finer particulate matters in the airflow subjected to the first separation treatment, and the separated particulate matters fall into a second dust collection assembly to finish the second separation and collection of the particulate matters; as the airflow is subjected to two-stage separation treatment, the number of particulate matters reaching the filtering structure is reduced, and the service lives of the filtering structure and the motor are prolonged.

Description

Technical Field

[0001] This utility model relates to the field of vacuum cleaner technology, and in particular to a vacuum cleaner with a two-stage spiral separation structure. Background Technology

[0002] Traditional vacuum cleaners work by relying on the suction power generated by a motor to draw dust and debris into the dustbin, with a filter structure located at the front of the motor for initial filtration. However, this simple filtration mechanism is ineffective at preventing small particles such as dust from accumulating and eventually clogging the filter. Therefore, users need to frequently replace or clean the filter, increasing operating costs and maintenance. Furthermore, if the filter is not replaced or cleaned in time, a clogged filter will severely affect the motor's suction power, increasing the motor load, generating excessive heat, and potentially damaging the motor. In addition, a clogged filter reduces the vacuum cleaner's energy efficiency, making it consume more electricity during use.

[0003] Furthermore, application number CN201810974260.7 discloses a cyclone separator and a vacuum cleaner, which adds a cyclone separator between the air inlet and the motor of the vacuum cleaner. While this improves the filtration efficiency and reduces filter clogging to some extent, it still has the following technical problems: Separating airflow from particles using only a single cyclone separator results in a relatively short separation path, limiting the chances of particles being separated in the airflow. Some fine particles are not effectively separated, leading to low separation efficiency. In addition, because the cyclone separator is fixed at the end of the handheld tube, the overall size of the handheld tube increases, requiring more space and making it difficult for the user to hold and operate.

[0004] In view of the above, this utility model is hereby proposed. Utility Model Content

[0005] To address the aforementioned technical problems, the purpose of this utility model is to provide a vacuum cleaner with a two-stage spiral separation structure. The preferred technical solutions among the various technical solutions provided by this utility model and their numerous technical effects are detailed below.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] This utility model provides a vacuum cleaner with a two-stage spiral separation structure, including a first-stage spiral separator, a second-stage spiral separator, a first dust collection component, and a second dust collection component. The first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between the vacuum cleaner's suction inlet and the filter structure along the gas flow direction.

[0008] The first-stage spiral separator includes a first spiral channel for driving the airflow entering from the dust inlet to separate the particulate matter for the first time; the first dust collection assembly is connected to the outlet end of the first spiral channel for collecting the particulate matter generated during the first separation.

[0009] The second-stage spiral separator includes a second spiral channel for driving the airflow and particulate matter to undergo a second separation after the first separation; the second dust collection assembly is sealed and connected to the outlet end of the second spiral channel for collecting the particulate matter generated during the second separation.

[0010] Preferably, the first-stage spiral separator further includes a first separation channel, which is located on the spiral axis of the first spiral channel and is used to connect the first spiral channel and the second-stage spiral separator.

[0011] Preferably, a first dust collection hopper is provided on the outer edge of the first spiral channel for connecting the first spiral channel and the first dust collection component.

[0012] Preferably, the second-stage spiral separator further includes a second separation channel located on the spiral axis of the second spiral channel, for connecting the second spiral channel and the filter structure.

[0013] Preferably, a second dust collection hopper is provided on the outer edge of the second spiral channel for sealing and connecting the first spiral channel and the second dust collection assembly.

[0014] Preferably, the first separation channel is sealed and connected to the second air intake channel via a connecting pipe.

[0015] Preferably, a guide portion with a gradually narrowing inner diameter is provided above the inlet end of the second dust collection component.

[0016] Preferably, it further includes a first mounting part, a second mounting part, and a vacuum cleaner body that are sequentially and sealed together from top to bottom.

[0017] The first mounting section is used to mount the filter structure and the motor;

[0018] The second mounting section is used to install the first-stage spiral separator and the second-stage spiral separator, and is provided with a dust suction inlet;

[0019] The vacuum cleaner body is used to install the first dust collection component and the second dust collection component.

[0020] Preferably, the first mounting part, the second mounting part, and the vacuum cleaner body are detachably connected by a snap-fit ​​assembly.

[0021] The preferred technical solution of this utility model can also produce at least the following technical effects:

[0022] This invention provides a vacuum cleaner with a two-stage spiral separation structure, including a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly, and a second dust collection assembly. The first-stage and second-stage spiral separators are sequentially connected and arranged between the vacuum cleaner's suction inlet and filter structure along the gas flow direction. The first-stage spiral separator includes a first spiral channel for driving the airflow entering from the suction inlet to perform a first separation with particulate matter. The first dust collection assembly is connected to the outlet end of the first spiral channel for collecting the particulate matter generated in the first separation. The second-stage spiral separator includes a second spiral channel for driving the airflow after the first separation to perform a second separation with particulate matter. The second dust collection assembly is sealed and connected to the outlet end of the second spiral channel for collecting the particulate matter generated in the second separation. This invention uses the suction force generated by the motor to draw dust and debris into the suction inlet, which then undergoes two-stage separation processing via the first and second-stage spiral separators. The airflow after the two-stage separation process is then discharged from the vacuum cleaner through the filter structure and the motor.

[0023] Specifically, the airflow entering from the dust inlet flows into the first-stage spiral separator. As the airflow passes through the first spiral channel, it is subjected to centrifugal force, causing larger and heavier particles to be separated and move downwards along the wall of the first spiral channel, falling into the first dust collection assembly, thus completing the first particulate matter separation and collection.

[0024] The airflow, after initial separation, continues into the second-stage spiral separator. Passing through the second spiral channel, it is again subjected to centrifugal force, effectively separating even finer particles. These particles move downwards along the wall of the second spiral channel and fall into the second dust collection assembly, completing the second stage of particle separation and collection. Subsequently, the airflow, after two stages of separation, reaches the filter structure. Because the airflow undergoes two-stage separation, the number of particles reaching the filter structure is greatly reduced, extending the service life of the filter structure and the motor. Furthermore, through the two-stage collection design, the first and second dust collection assemblies effectively classify and collect particles of different sizes, improving particle collection efficiency and facilitating user cleaning. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure of a vacuum cleaner with a two-stage spiral separation structure provided by this utility model;

[0027] Figure 2 This is a schematic diagram of the structure of a vacuum cleaner body with a two-stage spiral separation structure provided by this utility model.

[0028] Figure 3 This is a schematic diagram of the second mounting part, the first-stage spiral separator, the second-stage spiral separator, and the filter structure of a vacuum cleaner with a two-stage spiral separation structure provided by this utility model;

[0029] Figure 4 This is a schematic diagram of the second mounting part, the first-stage spiral separator, and the second-stage spiral separator of a vacuum cleaner with a two-stage spiral separation structure provided by this utility model.

[0030] Figure 5 yes Figure 4 Another structural diagram from another perspective;

[0031] Figure 6 This is a schematic diagram of the second mounting part and the first-stage spiral separator of a vacuum cleaner with a two-stage spiral separation structure provided by this utility model;

[0032] Figure 7 This utility model provides a schematic diagram of the connecting pipe and the second-stage spiral separator of a vacuum cleaner with a two-stage spiral separation structure.

[0033] Figure 8 yes Figure 1 A magnified view of part A.

[0034] In the picture:

[0035] 1. First Installation Section;

[0036] 2. Second mounting section; 21. Dust suction inlet; 22. Mounting groove;

[0037] 3. Vacuum cleaner body;

[0038] 4. First air intake channel; 5. First spiral channel; 6. First separation channel; 7. First dust collection hopper;

[0039] 8. Second air intake channel; 9. Second spiral channel; 10. Second separation channel; 11. Second dust collection hopper; 12. Second dust collection assembly; 121. Guide section;

[0040] 13. Connecting pipelines;

[0041] 14. Filter structure;

[0042] 15. First snap-fit ​​assembly; 151. First mounting base; 152. First snap-fit ​​element; 153. Second snap-fit ​​element; 154. Third snap-fit ​​element;

[0043] 16. Second snap-fit ​​assembly; 161. Second mounting base; 162. Fourth snap-fit ​​component; 163. Fifth snap-fit ​​component. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0045] like Figures 1-8 As shown, this utility model provides a vacuum cleaner with a two-stage spiral separation structure, including a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly, and a second dust collection assembly 12. The first-stage spiral separator and the second-stage spiral separator are sequentially connected and arranged between the vacuum cleaner's suction inlet 21 and the filter structure 14 along the gas flow direction. The first-stage spiral separator includes a first spiral channel 5, which is used to drive the airflow entering from the suction inlet 21 to perform a first separation with the particulate matter. The first dust collection assembly is connected to the outlet end of the first spiral channel 5 and is used to collect the particulate matter generated in the first separation. The second-stage spiral separator includes a second spiral channel 9, which is used to drive the airflow after the first separation to perform a second separation with the particulate matter. The second dust collection assembly 12 is sealed and connected to the outlet end of the second spiral channel 9 and is used to collect the particulate matter generated in the second separation.

[0046] This invention uses the suction force generated by the motor to draw dust and debris into the suction inlet, and then separates them in two stages, first through a first-stage spiral separator and second through a second-stage spiral separator. The airflow after the two-stage separation process then passes through a filter structure and the motor before being discharged from the vacuum cleaner.

[0047] Specifically, the airflow entering from the suction inlet flows into the first-stage spiral separator. As it passes through the first spiral channel 5, the airflow is subjected to centrifugal force, causing larger and heavier particles to be separated. These particles move downwards along the wall of the first spiral channel 5 and fall into the first dust collection assembly, completing the first particle separation and collection. The pre-separated airflow continues into the second-stage spiral separator. Passing through the second spiral channel 9, it is similarly subjected to centrifugal force, effectively separating even finer particles. These particles move downwards along the wall of the second spiral channel 9 and fall into the second dust collection assembly 12, completing the second particle separation and collection. Subsequently, the airflow, after two stages of separation, reaches the filter structure 14. Because the airflow undergoes two stages of separation, the number of particles reaching the filter structure is greatly reduced, extending the service life of the filter structure 14 and the motor. Furthermore, through the two-stage collection design, the first dust collection assembly and the second dust collection assembly 12 achieve effective graded collection of particles of different sizes, improving particle collection efficiency and facilitating user cleaning.

[0048] As an optional implementation, the first-stage spiral separator further includes a first separation channel 6, which is located on the spiral axis of the first spiral channel 5 and is used to connect the first spiral channel 5 and the second-stage spiral separator.

[0049] Furthermore, the first-stage spiral separator also includes a first air inlet channel 4, and the first air inlet channel 4, the first spiral channel 5 and the first separation channel 6 are connected in sequence along the gas flow direction; the inlet end of the first air inlet channel 4 is connected to the dust suction inlet, and the outlet end of the first air inlet channel 4 is tangentially connected to the inlet end of the first spiral channel 5.

[0050] Since the first air inlet channel 4 is tangentially connected to the first spiral channel 5, the airflow enters the first spiral channel 5 tangentially. The airflow is fully subjected to centrifugal force, causing larger and heavier particles to be separated under the action of centrifugal force. These particles move downwards along the wall of the first spiral channel 5 and fall into the first dust collection assembly, completing the first particulate matter separation and collection. Subsequently, the airflow after the first separation process flows into the second-stage spiral separator through the first separation channel 6.

[0051] As an optional implementation, a first dust collection hopper 7 is provided on the outer edge of the first spiral channel 5 to connect the first spiral channel 5 and the first dust collection assembly.

[0052] Furthermore, the first spiral channel 5 is designed to spiral downwards along the gas flow direction, and its lower part is an open structure.

[0053] Because the first spiral channel 5 is designed to spiral downwards, it optimizes the airflow path and better guides the airflow. This allows the airflow to fully utilize centrifugal force to separate particulate matter during the flow process. The particulate matter is thrown against the wall of the first spiral channel 5 and moves downwards along the wall, entering the first dust collection hopper 7.

[0054] The inlet end of the first separation channel 6 extends into the first dust collection hopper 7.

[0055] The inner diameter of the first dust collection hopper 7 gradually decreases from top to bottom, forming a guiding slope on its inner wall. This extends the path of centrifugal force to a certain extent, allowing the airflow to be subjected to centrifugal force for a longer period, thus more effectively separating particulate matter and improving separation efficiency. Subsequently, the separated particulate matter smoothly falls into the first dust collection assembly along the guiding slope of the first dust collection hopper 7. The airflow after the first separation process flows into the second-stage spiral separator through the first separation channel 6.

[0056] As an optional implementation, the second-stage spiral separator further includes a second separation channel 10, which is located on the spiral axis of the second spiral channel 9 and is used to connect the second spiral channel 9 and the filter structure 14.

[0057] Furthermore, the second-stage spiral separator also includes a second air inlet channel 8, and the second air inlet channel 8, the second spiral channel 9, and the second separation channel 10 are connected sequentially along the gas flow direction; the inlet end of the second air inlet channel 8 is connected to the first separation channel 6, and the outlet end of the second air inlet channel 8 is tangentially connected to the inlet end of the second spiral channel 9.

[0058] After initial separation, the airflow enters the second intake channel 8 through the first separation channel 6, and then enters the second spiral channel 9 tangentially. Again, it is subjected to centrifugal force, effectively separating even finer particles. These particles move downwards along the wall of the second spiral channel 9 and fall into the second dust collection assembly 12, completing the second particulate separation and collection. Subsequently, the airflow, after two stages of separation, passes through the second separation channel 10 and reaches the filter structure 14. Because the airflow undergoes two stages of separation, the number of particles reaching the filter structure 14 is greatly reduced, extending the service life of the filter structure 14.

[0059] As an optional implementation, a second dust collection hopper 11 is provided on the outer edge of the second spiral channel 9 for sealing and connecting the second spiral channel 9 and the second dust collection assembly 12.

[0060] Furthermore, the second spiral channel 9 is designed to spiral downwards along the gas flow direction, and its lower part is an open structure.

[0061] Because the second spiral channel 9 is designed to spiral downwards, it optimizes the airflow path and better guides the airflow. This allows the airflow to make full use of centrifugal force to separate finer particles during the flow process. The particles are thrown against the wall of the second spiral channel 9 and move downwards along the wall, entering the second dust collection hopper 11.

[0062] The inlet end of the second separation channel 10 extends into the second dust collection hopper 11, and the second separation channel 10 is arranged in parallel with the first separation channel 6.

[0063] The inner diameter of the second dust collection hopper 11 gradually decreases from top to bottom, forming a guiding slope on its inner wall. This extends the path of centrifugal force to a certain extent, allowing the airflow to be subjected to centrifugal force for a longer period within the second dust collection hopper 11, thus more effectively separating particulate matter from the airflow and further improving separation efficiency. Subsequently, the separated particulate matter smoothly falls into the second dust collection assembly 12 along the guiding slope of the second dust collection hopper 11. The airflow, after undergoing two separation processes, flows into the filter structure 14 through the second separation channel 10.

[0064] Furthermore, the particles separated by the first-stage spiral separator are collected by the first dust collection component, which can hold a large number of larger particles, reducing the need for frequent cleaning. Meanwhile, the even finer particles separated by the second-stage spiral separator are collected by the second dust collection component 12. This multi-stage separation design allows the vacuum cleaner to more effectively separate and collect particles of different sizes, making cleaning easier for the user.

[0065] As an optional implementation, the first separation channel 6 is sealed and connected to the second air intake channel 8 via the connecting pipe 13.

[0066] Furthermore, the connecting pipe 13 adopts a multi-segment bend connection structure, which can be flexibly designed according to usage requirements. For example... Figure 7 As shown, the connecting pipe 13 in this embodiment adopts a three-section bend connection structure. Furthermore, the inner wall of its bend section is a flow-guiding curved surface to optimize airflow.

[0067] The function of the connecting pipe 13 is to connect the first-stage spiral separator and the second-stage spiral separator, and to allow the airflow to still pass through the second intake channel 8 and enter the second spiral channel 9 in a tangential direction.

[0068] It should be noted that the specific sealing connection between the connecting pipe 13 and the first separation channel 6 and the second air intake channel 8 adopts the conventional detachable sealing design between pipes in the prior art, which will not be elaborated here.

[0069] As an optional implementation, a guide portion 121 with a gradually decreasing inner diameter is provided above the inlet end of the second dust collection assembly 12.

[0070] This configuration guides the outlet end of the second dust collection hopper 11 to be inserted into the inlet end of the second dust collection assembly 12, gradually reducing the gap between the two and ultimately forming a tight seal, effectively preventing particulate matter from leaking from the connection point.

[0071] As an optional implementation, it also includes a first mounting part 1, a second mounting part 2, and a vacuum cleaner body 3 that are sequentially and sealed together from top to bottom.

[0072] The first mounting section 1 is used to install the filter structure and the motor;

[0073] The second mounting section 2 is used to install the first-stage spiral separator and the second-stage spiral separator, and is provided with a dust suction inlet 21;

[0074] The vacuum cleaner body 3 is used to install the first dust collection component and the second dust collection component 12.

[0075] Furthermore, the first-stage spiral separator and the second dust collection hopper 11 are integrally injection molded with the first mounting part 1.

[0076] like Figure 3 , Figure 4 As shown, the second mounting part 2 is provided with a mounting groove 22 for mounting the second-stage spiral separator and part of the connecting pipe 13.

[0077] Furthermore, since the first-stage spiral separator and the second-stage spiral separator are located inside the second mounting part 2, rather than at the end of the handheld tube in the prior art, the volume and weight of the handheld tube are not increased, allowing the user to easily hold and operate the handheld tube.

[0078] The first dust collection component can be a separately set dust collection bin, or the dust collection chamber of the vacuum cleaner body 3 can be directly used as the first dust collection component. The second dust collection component 12 adopts a separately set dust collection bin with a gradually decreasing inner diameter. The specific specifications of the first dust collection component and the second dust collection component 12 can be flexibly designed according to the usage requirements.

[0079] As an optional implementation, the first mounting part 1, the second mounting part 2, and the vacuum cleaner body 3 are detachably connected by a snap-fit ​​assembly.

[0080] Furthermore, such as Figure 1 , Figure 8As shown, the latching assembly includes a first latching assembly 15, which includes a first mounting base 151, a first latching member 152, a second latching member 153, and a third latching member 154. The first mounting base 151 is rotatably mounted on the vacuum cleaner body 3, and the first latching member 152 is rotatably mounted on the first mounting base 151. The second latching member 153 is rotatably mounted on the second mounting part 2 and is provided with a first latching groove that matches the first latching member 152. The third latching member 154 is mounted on the first mounting part 1 and is provided with a second latching groove that matches the second latching member 153.

[0081] The number of the first buckle components 15 is two sets, and they are symmetrically arranged to improve the connection stability between the first mounting part 1, the second mounting part 2 and the vacuum cleaner body 3.

[0082] The first mounting base 151 is connected to the vacuum cleaner body 3 via a rotating shaft. The rotating end of the first fastener 152 is connected to the first mounting base 151 via a rotating shaft, and the hook end of the first fastener 152 engages with the first locking groove. The second fastener 153 is rotatably connected to the second mounting part 2 via a rotating shaft, and its hook end engages with the second locking groove of the third fastener 154.

[0083] First, align the hook end of the second fastener 153 with and engage it in the second slot of the third fastener 154, so that the first mounting part 1 and the second mounting part 2 are securely connected together. Then, align the hook end of the first fastener 152 with and engage it in the first slot on the second fastener 153, so that the second mounting part 2 and the vacuum cleaner body 3 are securely connected together.

[0084] The latching assembly also includes a second latching assembly 16, which includes a second mounting base 161, a fourth latching member 162, and a fifth latching member 163. The second mounting base 161 is disposed on the second mounting part 2, the fourth latching member 162 is rotatably disposed on the second mounting base 161, and the fifth latching member 163 is disposed on the vacuum cleaner body 3 and engages with the fourth latching member 162.

[0085] Furthermore, there are two sets of the second snap-fit ​​components 16, which are arranged symmetrically.

[0086] The rotating end of the fourth fastener 162 is rotatably connected to the second mounting base 161 via a rotating shaft, and the hook end of the fourth fastener 162 engages with the fifth fastener 163.

[0087] Align the hook end of the fourth fastener 162 with the fifth fastener 163 and apply external force to engage them together, so that the second mounting part 2 and the vacuum cleaner body 3 are securely connected together.

[0088] It should be noted that the specific snap-fit ​​structure of the first snap-fit ​​component 15 and the second snap-fit ​​component 16 adopts existing technology. As long as the function of rotation snap-fit ​​can be realized, it will not be elaborated here.

[0089] It is understood that the same or similar parts in the above embodiments can be referred to each other, and the contents not described in detail in some embodiments can be referred to the same or similar contents in other embodiments.

[0090] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0091] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "mounting part," "connection," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0092] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "a particular example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0093] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A vacuum cleaner with a two-stage spiral separation structure, characterized in that, The dust collector comprises a first-stage spiral separator, a second-stage spiral separator, a first dust collection assembly and a second dust collection assembly, wherein the first-stage spiral separator and the second-stage spiral separator are arranged in sequence along a gas flow direction between a dust suction inlet and a filter structure of the dust collector. The first-stage spiral separator comprises a first spiral channel for driving the gas flow entering from the dust suction inlet to separate particles for the first time; the first dust collection assembly is in communication with an outlet end of the first spiral channel for collecting the particles generated by the first separation. The second-stage spiral separator comprises a second spiral channel for driving the gas flow after the first separation to separate particles for the second time; the second dust collection assembly is in sealed communication with an outlet end of the second spiral channel for collecting the particles generated by the second separation.

2. The dust collector having a two-stage spiral separating structure according to claim 1, wherein, The first-stage spiral separator further comprises a first separation channel located on a spiral axis of the first spiral channel for connecting the first spiral channel and the second-stage spiral separator.

3. The dust collector having a two-stage spiral separating structure according to claim 1, wherein, An outer edge of the first spiral channel is provided with a first dust collection hopper for connecting the first spiral channel and the first dust collection assembly.

4. The dust collector having a two-stage spiral separating structure according to claim 1, wherein, The second-stage spiral separator further comprises a second separation channel located on a spiral axis of the second spiral channel for connecting the second spiral channel and the filter structure.

5. The dust collector having a two-stage spiral separating structure according to claim 1, wherein, An outer edge of the second spiral channel is provided with a second dust collection hopper for sealingly connecting the first spiral channel and the second dust collection assembly.

6. The dust collector having a two-stage spiral separating structure according to claim 2, wherein, The first separation channel is in sealed communication with a second air inlet channel of the second-stage spiral separator through a connecting pipeline.

7. The dust collector having a two-stage spiral separating structure according to claim 1, wherein, An upper portion of an inlet end of the second dust collection assembly is provided with a guide portion with a gradually reduced inner diameter.

8. The dust collector having a two-stage spiral separating structure according to claim 1, wherein, The dust collector further comprises a first mounting portion, a second mounting portion and a dust collector body which are sequentially and sealingly connected from top to bottom, The first mounting portion is used for mounting the filter structure and the motor; The second mounting portion is used for mounting the first-stage spiral separator and the second-stage spiral separator and is provided with the dust suction inlet; The dust collector body is used for mounting the first dust collection assembly and the second dust collection assembly.

9. The dust collector having a two-stage spiral separating structure according to claim 8, wherein, The first mounting portion, the second mounting portion and the dust collector body are detachably connected through a buckle assembly.

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