Dust collector

Abstract

The utility model belongs to the technical field of dust collectors, and particularly relates to a dust collector. A dust collector is characterized in that the dust collector comprises a dust collector body, a fan and a filter assembly are arranged in the dust collector body, and the fan is communicated with the filter assembly; the barrel is matched with the dust collector body and comprises an air duct pipe and a dust cup, the dust cup wraps the outer side of the air duct pipe in the circumferential direction, and a dust collecting cavity is formed between the dust cup and the air duct pipe; one axial end of the air duct pipe is provided with an air inlet, the other axial end of the air duct pipe is provided with an air and dust separation cavity, the filter assembly extends into the air and dust separation cavity, and the side wall of the air and dust separation cavity is provided with a dust guide notch communicated with the dust collection cavity; and the flow guide ramp spirally extends from the air inlet to the wind-dust separation cavity and is used for converting axial airflow into centrifugal vortex, so that dust moves along the inner wall of the wind-dust separation cavity under the action of centrifugal force. The dust collection device has the advantages that dust adsorbed on the filter assembly is reduced, blockage is not prone to occurring, and the dust collection efficiency is good.

Description

TECHNICAL FIELD

[0001] The utility model belongs to dust collector technical field especially relates to a dust collector. BACKGROUND

[0002] The patent with the application number 202421225826.3 discloses a small cylindrical dust collector convenient for dust pouring, the main body structure of which comprises a cylinder and a dust cup assembly connected with the cylinder, the cylinder is internally integrated with a fan device, and air-solid separation is realized through a filtering assembly extending into the dust cup. When the fan is running, dust-containing airflow enters the cylinder under the action of negative pressure, and dust and sundries are intercepted on the surface of the filtering assembly.

[0003] The existing technology has the following defects: the dust collector adopts a straight-through air duct structure, and airflow and dust directly impact and adhere to the surface of the filtering assembly along the axial direction, which easily leads to a significant decrease in the air permeability of the filter screen, and further causes airflow blockage and dust suction efficiency attenuation. UTILITY MODEL CONTENTS

[0004] To solve the problems in the prior art, the utility model provides a dust collector which reduces dust adsorption on the filtering assembly, is not prone to blockage, and has good dust suction efficiency.

[0005] The utility model adopts the following technical solutions to achieve the purpose: a dust collector comprises:

[0006] A dust collector body is internally provided with a fan, an axially extending filtering assembly is arranged at one end of the dust collector body in the axial direction, and the fan is in communication with the filtering assembly;

[0007] A cylinder is adapted to the axial end of the dust collector body with the filtering assembly, the cylinder comprises a wind duct pipe and a dust cup coaxially sleeved, the dust cup is wrapped on the circumferential outer side of the wind duct pipe, and an annular dust collecting cavity is formed between the dust cup and the wind duct pipe; an air inlet is arranged at one end of the wind duct pipe in the axial direction, a dust-air separation cavity is arranged at the other end of the wind duct pipe in the axial direction, the filtering assembly extends into the dust-air separation cavity, and a dust guide gap in communication with the dust collecting cavity is formed in the side wall of the dust-air separation cavity; and

[0008] A flow guide ramp is arranged between the air inlet and the dust-air separation cavity, the flow guide ramp extends spirally from the air inlet to the dust-air separation cavity, is used for converting axial airflow into centrifugal vortex flow, and enables dust to move along the inner wall of the dust-air separation cavity under the action of centrifugal force and enter the dust collecting cavity through the dust guide gap.

[0009] The dust collector of the utility model converts axial airflow into centrifugal vortex flow through the spiral flow guide ramp, enables dust to move along the inner wall of the wind duct pipe under the action of centrifugal force and enter the dust collecting cavity through the dust guide gap, so that the amount of dust and sundries on the filtering assembly is significantly reduced, the filtering assembly is not prone to blockage, and the dust suction efficiency is good.

[0010] As a preferred, the filter assembly is cylindrical and coaxially arranged with the air duct pipe, and an annular equidistant gap is formed between the side wall of the filter assembly and the inner wall of the dust separation chamber, under the action of centrifugal vortex, the dust is tightly attached to the inner wall of the dust separation chamber under the action of centrifugal force, and the gap is used to isolate the main flow area of the dust-containing airflow from the filter assembly to reduce the risk of dust adhesion.

[0011] The flow of dust in the dust wind chamber is in the form of centrifugal vortex, so the dust will tightly adhere to the inner wall of the dust separation chamber, and the above-mentioned arrangement can reduce the adhesion of dust on the filter assembly, and isolate the main flow area of the dust from the filter assembly through the uniform and equidistant annular gap. The filter assembly only contacts the edge airflow with low dust concentration, thereby significantly reducing the dust accumulation rate of the filter assembly and improving the gas-solid separation efficiency.

[0012] As a preferred, the filter assembly is provided with a uniform array of filter holes, and the axial end face of the filter assembly abuts against the bottom wall of the dust separation chamber.

[0013] Through the cooperation of the axial end face limiting of the filter assembly and the uniform distribution of the filter holes, the dust-containing airflow in the dust separation chamber is more stable, and the dust is further moved tightly along the inner wall of the chamber under the action of centrifugal force.

[0014] As a preferred, the axial end face of the dust separation chamber abuts against the axial end face of the dust collector body, so that the dust separation chamber and the dust collection chamber are physically isolated by the wall of the dust separation chamber.

[0015] Through the above-mentioned arrangement, the negative pressure suction force generated by the filter assembly can be concentrated inside the dust separation chamber, so as to avoid that the settled dust in the dust collection chamber is disturbed by the negative pressure and sucked into the dust separation chamber again, thereby improving the dust collection efficiency and reducing the risk of filter assembly blockage.

[0016] As a preferred, the dust guide gap is arranged at one end of the dust separation chamber close to the dust collector body.

[0017] The dust can rise along the vortex of the dust separation chamber, and by arranging the dust guide gap at one end of the dust separation chamber close to the dust collector body, the dust can be finally discharged at the end of the dust separation chamber, thereby increasing the discharge rate of the dust.

[0018] As a preferred, the air duct pipe is further provided with an axially extending air inlet chamber, the air inlet chamber is arranged between the air inlet and the flow guide slope, the flow guide slope is arranged outside the wall of the air inlet chamber, and the radial projection of the flow guide slope at least partially overlaps the wall of the air inlet chamber.

[0019] The radial projection of the flow guide slope at least partially overlaps the wall of the air inlet chamber, so that the cylinder is more compact in structure.

[0020] As preferred, the guide slope and the air inlet cavity are communicated through a through hole, and a one-way component is arranged in the through hole, and the one-way component is configured to be in a conductive state driven by air flow pressure when the fan is started, and to allow the dust-containing air flow to enter the guide slope from the air inlet through the through hole; and the one-way component is automatically reset to a closed state to block the reverse flow of dust when the fan is turned off.

[0021] The one-way component can avoid the reverse flow of dust from the air inlet, and the one-way component can adopt any existing component capable of realizing one-way flow of air flow.

[0022] As preferred, the one-way component comprises a flexible sheet and a blocking protrusion, the flexible sheet comprises a fixed end fixed to the hole wall of the through hole and a free end capable of free swinging, and the blocking protrusion is arranged on the hole wall of the through hole and used for blocking the free end from swinging toward the air inlet cavity side; when the fan is started, the flexible sheet swings its free end toward the guide slope side under the action of air flow pressure, so that the through hole is in a conductive state.

[0023] When the fan is started, the flexible sheet swings under the action of air flow pressure to realize the opening and closing of the through hole, and the blocking protrusion is used for blocking the free end from swinging toward the air inlet cavity side, so that the one-way effect is realized.

[0024] As preferred, the free end of the flexible sheet is provided with a clearance gap, and the clearance gap is matched with the profile of the guide slope and used for avoiding the guide slope.

[0025] The free end of the flexible sheet is provided with the clearance gap, so that when the channel is in a conductive state, the free end of the flexible sheet can be matched with the profile of the guide slope when swinging to the guide slope side, so that the free end of the flexible sheet can be tightly attached to the guide slope, and the conductive effect is better.

[0026] As preferred, the cylinder is made of transparent material; the cylinder is detachably fixed to the dust collector body, and an axial end of the cylinder is sleeved outside an axial end of the dust collector body.

[0027] The transparent material facilitates observation of the accumulation of dust, so that the dust can be cleaned in time. The detachable fixing of the cylinder to the dust collector body facilitates the dismounting of the cylinder for dust cleaning. The detachable fixing can be magnetic attraction, buckle fixing, etc.

[0028] Compared with the prior art, the utility model has the advantages of reducing dust adsorption on the filter assembly, being not easy to be blocked, and having good dust collection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 It is a structural schematic view of the utility model;

[0030] Figure 2Fig. 1 is an exploded view of the dust collector body and the dust cup;

[0031] Figure 3 Fig. 2 is a top view of the dust cup;

[0032] Figure 4 Fig. 3 is a sectional view of the dust cup;

[0033] Figure 5 Fig. 4 is a sectional view of the dust cup from another perspective;

[0034] Figure 6 Fig. 5 is a sectional view of the air duct pipe;

[0035] Figure 7 Fig. 6 is a sectional view of the air duct pipe from another perspective;

[0036] Figure 8 Fig. 7 is a sectional view of Figure 1 Fig. 8 is a sectional view of the filter assembly and the dust cup when they are mounted together.

[0037] Figure 9 Fig. 9 is a sectional view of the filter assembly and the dust cup when they are mounted together.

[0038] Reference numerals: 1, dust cup; 11, dust cup; 12, dust collecting cavity; 111, connecting groove; 2, dust collector body; 21, connecting piece; 22, filter assembly; 3, air duct pipe; 31, dust-air separating cavity; 32, dust guiding notch; 4, air flow guiding ramp; 5, air inlet cavity; 51, air inlet; 511, first sleeve; 13, air inlet of the dust cup; 131, second sleeve; 6, flexible sheet; 61, fixed end; 62, free end; 621, avoiding notch; 63, blocking protrusion; 7, air blower; 71, sponge and filter screen assembly. DETAILED DESCRIPTION

[0039] The utility model will be further described below according to the drawings and specific embodiments.

[0040] As Figure 1 , Figure 2 and Figure 8As shown, the embodiment discloses a dust collector, including a dust collector body 2 and a barrel 1. The dust collector body 2 is provided with a fan 7, and the lower end of the dust collector body 2 is provided with an axial downward extending filter assembly 22, which is cylindrical and has a uniform filter hole array on its outer wall. The fan 7 is in communication with the filter assembly 22, and a sponge and filter screen assembly 71 possessed by the existing dust collector is further provided between the two. The barrel 1 can be sleeved on the lower end of the dust collector body 2, and the axial upper end inner wall of the barrel 1 is provided with three uniformly spaced connecting grooves 111, which are L-shaped. The outer wall of the lower end of the dust collector body 2 is provided with connecting pieces 21 corresponding to the connecting grooves 111. When the dust collector body 2 and the barrel 1 are matched, the upper end of the barrel 1 is sleeved on the lower end of the dust collector body 2, and the connecting pieces 21 are fitted into the connecting grooves 111. Then, the barrel 1 is rotated to make the connecting pieces 21 and the connecting grooves 111 misaligned to realize the fixation between the dust collector body 2 and the barrel 1. Thus, the detachable connection between the two is realized.

[0041] As shown, Figures 3 to 7 and Figure 9 As shown, the barrel 1 includes a coaxially sleeved air duct pipe 3 and a dust cup 11, both of which are cylindrical. The dust cup 11 is actually the outer wall of the barrel 1, and the dust cup 11 covers the circumferential outer side of the air duct pipe 3, and an annular dust collecting cavity 12 is formed between the two. The axial lower end of the air duct pipe 3 is provided with an axial extension into the air inlet cavity 5 and an axial extension into the air inlet 51. The axial upper end of the air duct pipe 3 is provided with a dust separation cavity 31, and the filter assembly 22 extends into the dust separation cavity 31, and the axial end face of the filter assembly 22 abuts against the bottom wall face of the dust separation cavity 31. At the same time, the axial upper end face of the dust separation cavity 31 abuts against the axial lower end face of the dust collector body 2, so that the dust separation cavity 31 and the dust collecting cavity 12 are physically isolated by the wall body of the dust separation cavity 31. The side wall of the dust separation cavity 31 is provided with a dust guide gap 32 in communication with the dust collecting cavity 12, and the dust guide gap 32 is located at one end of the dust separation cavity 31 close to the dust collector body 2, i.e. the upper end of the dust separation cavity 31.

[0042] The air duct pipe 3 is provided with a guide slope 4 between the air inlet cavity 5 and the dust separation cavity 31. The guide slope 4 is arranged outside the wall of the air inlet cavity 5 and extends spirally from the air inlet 51 to the dust separation cavity 31. The radial projection of the guide slope 4 coincides with the wall of the air inlet cavity 5. The guide slope 4 is used to convert the axial airflow into a centrifugal vortex, so that the dust moves along the inner wall of the air duct pipe 3 (i.e. the inner wall of the dust separation cavity 31) under the action of the centrifugal force, and enters the dust collection cavity 12 through the dust guide gap 32. The filter assembly 22 is coaxially arranged with the air duct pipe 3. An annular equidistant gap is formed between the side wall of the filter assembly 22 and the inner wall of the dust separation cavity 31. Under the action of the centrifugal vortex, the dust moves closely along the inner wall of the dust separation cavity under the action of the centrifugal force. The gap is used to isolate the filter assembly 22 and the main flow area of the dust-containing airflow, reducing the risk of dust adhesion.

[0043] The lower end of the barrel 1 is provided with a barrel air inlet 13 formed by an axially extending second sleeve 131. The air inlet 51 of the air duct pipe 3 is formed by an axially extending first sleeve 511, which is sleeved on the second sleeve 131 to form an air inlet of the dust collector.

[0044] As shown in Figure 5 , Figure 7 and Figure 9 , the guide slope 4 and the air inlet cavity 5 are connected by a through hole. A one-way component is arranged in the through hole. The one-way component includes a flexible sheet 6 and a blocking protrusion 63. The flexible sheet 6 includes a fixed end 61 fixed to the hole wall of the through hole and a free end 62 capable of free swinging. The lower end of the free end 62 is provided with an avoidance gap 621. The avoidance gap 621 is triangular and matches the profile of the guide slope 4 and is used to avoid the guide slope 4. The blocking protrusion 63 is arranged on the hole wall of the through hole and is used to block the free end 62 from swinging towards the air inlet cavity 5. The blocking protrusion 63 is L-shaped and is used to block the upper side wall and the outer side wall of the free end 62. When the fan is started, the flexible sheet 6 swings the free end 62 towards the guide slope 4 under the pressure of the airflow, so that the through hole is in a conductive state. When the fan is turned off, the free end 62 of the flexible sheet 6 automatically resets to a closed state, blocking the reverse flow of dust.

[0045] When the dust collector is in use, when the fan is started, dust will be sucked into the barrel 1. Under the action of the guide slope 4, the dust moves upwards along the inner wall of the air duct pipe 3 under the action of the centrifugal force, and the main flow area of the dust avoids the filter assembly 22. Finally, the dust enters the dust collection cavity 12 through the dust guide gap 32 and settles.

Claims

1. A vacuum cleaner characterised in that, The application relates to a dust collector, which comprises a dust collector body, a filter assembly arranged at an axial end of the dust collector body, and a dust collecting cylinder. The dust collecting cylinder is coaxially arranged with the filter assembly and comprises a dust collecting cup and a duct pipe. The dust collecting cup is arranged on the outer side of the duct pipe and forms an annular dust collecting cavity with the duct pipe. The duct pipe is provided with an air inlet at one axial end and a dust-air separation cavity at the other axial end. The filter assembly is arranged in the dust-air separation cavity.

2. The dustsucker according to claim 1, characterized in that: The dust-air separation cavity is provided with a dust guide gap on the side wall.

3. The dustsweeper of claim 2, wherein: The filter assembly is arranged in the dust-air separation cavity.

4. The dust cup according to claim 2, wherein: The filter assembly is provided with a plurality of filter holes.

5. The dustsucker according to any one of claims 1 to 4, characterized in that: The filter assembly is provided with an axial end surface.

6. The dustsweeper according to any one of claims 1 to 4, characterized in that: The axial end surface of the dust-air separation cavity is in abutment with the axial end surface of the dust collector body.

7. The dustsweeper of claim 6, wherein: The dust guide gap is arranged at the end of the dust-air separation cavity close to the dust collector body.

8. The dust cup according to claim 7, wherein: The duct pipe is provided with an axial air inlet cavity.

9. The dustsweeper of claim 8, wherein: The air inlet cavity is arranged between the air inlet and the flow guide ramp.

10. The dustsweeper according to any one of claims 1 to 4, characterized in that: The flow guide ramp is arranged on the outer side of the wall of the air inlet cavity. The radial projection of the flow guide ramp at least partially overlaps the wall of the air inlet cavity. The flow guide ramp and the air inlet cavity are connected through a through hole. The through hole is provided with a one-way component. The one-way component is configured to be in an open state when the fan is started and to be in a closed state when the fan is stopped. The one-way component comprises a flexible sheet and a blocking convex edge. The flexible sheet comprises a fixed end and a free end. The blocking convex edge is arranged on the hole wall of the through hole. The free end of the flexible sheet is provided with an avoiding gap. The avoiding gap is matched with the profile of the flow guide ramp. The dust collecting cylinder is made of transparent material. The dust collecting cylinder is detachably fixed to the dust collector body. The axial end of the dust collecting cylinder is arranged on the outer side of the axial end of the dust collector body.

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