Air filtering structure of air blower

Abstract

The invention discloses an air filtering structure of an air blower. The air filtering structure comprises a shell, a click, an air inlet pipe and a filtering cover. The air inlet pipe is composed of an air inlet seat and a fixing sleeve, a fixing groove and a positioning groove are formed in the outer wall of the fixing sleeve, a first limiting groove, a second limiting groove and an elastic arm are arranged in the positioning groove, a first elastic piece is arranged in the first limiting groove, and a second elastic piece is arranged in the second limiting groove. The filter cover is inserted into the positioning groove through the limiting plate, and the limiting block is arranged in the limiting opening to limit the position of the limiting plate. The air filter structure of the air blower is ingenious in design, adopts a rotary structure for disassembly, does not need other tools for assistance during installation and disassembly, can be installed in a direct insertion mode during installation, and can be taken out only by rotating the filter cover during disassembly, so that the filter piece can be conveniently and quickly installed and replaced, and the cost is reduced. And external impurities can be prevented from entering the shell to affect normal operation of the fan blades, manufacturing is convenient, and the manufacturing cost is reduced.

Description

Technical Field

[0001] The invention relates to blower technology, in particular to an air filter structure for a blower. Background Art

[0002] The blower is mainly composed of the following six parts: motor, air filter, blower body, air chamber, base, and oil dripping nozzle. The blower operates eccentrically with the rotor offset in the cylinder, and the volume changes between the blades in the rotor slots to inhale, compress, and spit out air. During operation, the pressure difference of the blower is used to automatically send lubrication to the oil dripping nozzle and drip into the cylinder to reduce friction and noise, while keeping the gas in the cylinder from flowing back. This type of blower is also called a sliding vane blower.

[0003] Fans are mainly used in ventilation, coal, electricity, petroleum and other industrial fields. With the development of various industries in recent years, blowers are mainly used in the ventilation field. Most of them supply air to the inside of the purification device through blowers. However, this connection method increases the flow resistance of the blower outlet, resulting in increased pressure inside the blower. In the long run, it will cause damage to the impeller inside the blower, resulting in a decrease in air supply.

[0004] CN217646058U discloses an air intake filter device for a Roots blower. Although it can prevent the entry of foreign matter, its structure is relatively complex, installation is inconvenient, and manufacturing is difficult, resulting in high costs. Summary of the invention

[0005] In order to solve the defects of the prior art mentioned above, the present invention proposes a blower air filter structure.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A blower air filter structure, comprising:

[0008] A housing, one end of the housing is provided with a motor, the other end is provided with an air intake pipe, the lower end of the motor is provided with a bracket, and a filter cover is provided on the air intake pipe.

[0009] The air intake pipe is composed of an air intake seat and a fixing sleeve, an air intake hole is formed in the middle of the fixing sleeve, a fixing groove and a positioning groove are arranged on the outer wall of the fixing sleeve, a fixing plate is arranged in the fixing groove, a first limiting groove, a second limiting groove and an elastic arm are arranged in the positioning groove, a first elastic member is arranged in the first limiting groove, a second elastic member is arranged in the second limiting groove, the first elastic member is arranged at the upper end of the second elastic member, and a limiting block is arranged at one end of the elastic arm,

[0010] The filter cover is composed of an inner ring and an outer ring, and a plurality of filter holes are arranged on the filter cover. An air inlet chamber is formed in the middle of the inner ring, and the air inlet chamber is communicated with the air inlet hole. A receiving chamber is formed between the inner ring and the outer ring, and the fixing sleeve is arranged in the receiving chamber. A movable groove is arranged on the top wall of the receiving chamber, and a limiting plate matched with the positioning groove is arranged in the movable groove, and a limiting opening matched with the limiting block is arranged on the limiting plate. The first elastic member and the second elastic member are subjected to the pressure of the limiting plate to keep the limiting block under force in the limiting opening.

[0011] The filter cover is inserted into the positioning groove through the limiting plate, and the limiting block is placed in the limiting opening to limit the position of the limiting plate.

[0012] In the present invention, an inclined surface is provided on one side of the movable groove.

[0013] In the present invention, a first mounting hole and an arc-shaped hole are provided at the upper end of the limiting plate, a second mounting hole cooperating with the first mounting hole and a third mounting hole cooperating with the arc-shaped hole are provided on the filter cover, a hinged rod is provided in the first mounting hole and the second mounting hole, a positioning rod is provided in the arc-shaped hole and the third mounting hole, and when the filter cover is installed on the intake pipe through the limiting plate, the positioning rod is kept at the lower end of the arc-shaped hole.

[0014] In the present invention, the limiting block is triangular in shape and is provided with a guiding inclined surface.

[0015] In the present invention, the limiting plate is provided with a pushing arc surface which cooperates with the guiding inclined surface.

[0016] In the present invention, one side of the elastic arm is in the positioning groove, and the other side forms a compression area where the elastic arm is deformed and moved under force.

[0017] In the present invention, a first blocking slope, a second blocking slope and a vertical surface are provided in the positioning groove, the first blocking slope is arranged at the vertical surface opposite, the second blocking slope is at the lower end of the vertical surface, the first limiting groove is arranged at the lower ends of the vertical surface and the second blocking surface, the second limiting groove is arranged at the lower end of the first blocking slope, the elastic arm is at the lower end of the first blocking slope, and the first blocking slope and the second blocking slope are arranged in parallel.

[0018] In the present invention, a first active area is formed between the first blocking inclined surface and the limiting plate, and a second active area is formed between the second blocking inclined surface and the limiting plate.

[0019] In the present invention, the first elastic member is composed of a first bending section, a first mounting section, a first deformation section, a second deformation section, a matching section and a pressure section. The first mounting section is arranged in a first limiting groove, the first bending section and the first mounting section are arranged vertically, the first mounting section and the first deformation section are connected by a first arc section, the first deformation section and the second deformation section are connected by a second arc section, a limiting arc opening matching with the limiting plate is formed at the matching section, and the pressure section is placed on the second elastic member.

[0020] In the present invention, the second elastic member is composed of a second bending section, a second mounting section, a first elastic section and a second elastic section. The second mounting section is arranged in the second limiting groove, and the pressure section is placed on the second elastic section.

[0021] The blower air filter structure implementing the present invention has the following beneficial effects: the blower air filter structure is cleverly designed, adopts a rotating structure for disassembly, and does not require the use of other tools to assist in installation and disassembly. During installation, it can be installed by direct insertion, and during disassembly, it only needs to rotate the filter cover to take it out. The filter element can be installed and replaced conveniently and quickly, and external impurities can be prevented from entering the shell and affecting the normal operation of the fan blades. It is easy to manufacture and reduces manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the air filter structure of the blower of the present invention;

[0023] Figure 2 for Figure 1 The air intake pipe and filter cover in the

[0024] Figure 3 for Figure 2 Exploded diagram of

[0025] Figure 4 for Figure 3 A perspective view of the filter housing structure;

[0026] Figure 5 for Figure 4 A local enlarged view of point A in FIG.

[0027] Figure 6 for Figure 3 Schematic diagram of the intake pipe structure;

[0028] Figure 7 for Figure 6 A partial enlarged view of the positioning groove and the fixing groove;

[0029] Figure 8 for Figure 3 Schematic diagram of the limiting plate structure;

[0030] Fig. 9 It is a schematic diagram of the structure of the limiting plate, the first elastic member and the second elastic member in the present invention;

[0031] Fig.10 It is a schematic diagram of the installation state of the limit plate, the first elastic member, the second elastic member and the air intake pipe in the present invention;

[0032] Fig.11 for Fig.10 Schematic diagram of the status when inserted.

[0033] In the figure: motor 1, housing 2, bracket 3, filter cover 4, air outlet pipe 5, air inlet pipe 6, air inlet seat 7, fixing sleeve 8, air inlet hole 9, fixing groove 10, positioning groove 11, fixing plate 12, first limiting groove 13, second limiting groove 14, corner 15, first elastic member 16, second elastic member 17, first bending section 18, first installation section 19, first deformation section 20, second deformation section 21, matching section 22, pressure section 23, first arc section 24, second arc section 25, limiting plate 26, limiting arc opening 27, first retaining groove 28, limiting arc surface 29, second retaining groove 30, second Bending section 31, second mounting section 32, first elastic section 33, second elastic section 34, limiting block 35, limiting opening 36, guiding inclined surface 37, pushing arc surface 38, elastic arm 39, compression area 40, inner ring 41, outer ring 42, filter hole 43, air intake chamber 44, accommodating chamber 45, movable groove 46, inclined surface 47, first mounting hole 48, arc hole 49, second mounting hole 50, third mounting hole 51, hinged rod 52, positioning rod 53, first blocking inclined surface 54, second blocking inclined surface 55, vertical surface 56, first active area 57, second active area 58, extension section 59. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0035] like Figures 1 to 11 As shown, the blower air filter structure of the present invention comprises a motor 1, a housing 2, a bracket 3 and a filter cover 4. The motor 1 is arranged on the bracket 3, and the housing 2 is also arranged on the bracket 3. The interior of the housing 2 is provided with a fan blade connected to the motor 1, and the housing 2 is provided with an air outlet pipe 5. External air enters the interior of the housing 2 through the filter cover 4 and is discharged from the air outlet pipe 5 through the acceleration of the fan blade. The filter cover 4 can block external impurities and avoid damaging the fan blade.

[0036] The motor 1 is arranged at one end of the housing 2 , and an air inlet pipe 6 is arranged at the other end, on which a filter cover 4 is arranged.

[0037] The air intake pipe 6 is composed of an air intake seat 7 and a fixing sleeve 8. The air intake seat 7 is installed on the housing 2, and an air intake hole 9 is formed in the middle of the fixing sleeve 8.

[0038] A fixing groove 10 and a positioning groove 11 are provided on the outer wall of the fixing sleeve 8, a fixing plate 12 is provided in the fixing groove 10, and the fixing plate 12 can be installed on the fixing sleeve 8 by bolts. The number of the fixing grooves 10 and the positioning grooves 11 can be increased according to actual product requirements to improve the stability of the installation of the filter cover 4.

[0039] A first limiting groove 13 , a second limiting groove 14 and an elastic arm 39 are provided in the positioning groove 11 . A first elastic member 16 is provided in the first limiting groove 13 , a second elastic member 17 is provided in the second limiting groove 14 , and the first elastic member 16 is arranged at the upper end of the second elastic member 17 .

[0040] The first elastic member 16 is composed of a first bending section 18, a first mounting section 19, a first deformation section 20, a second deformation section 21, a matching section 22 and a pressure section 23. The first mounting section 19 is arranged in the first limiting groove 13, and the first bending section 18 is arranged perpendicular to the first mounting section 19. The first mounting section 19 is connected to the first deformation section 20 through a first arc section 24, and the first deformation section 20 and the second deformation section 21 are connected through a second arc section 25. A limiting arc opening 27 that matches the limiting plate 26 is formed at the matching section 22, and the pressure section 23 is placed on the second elastic member 17.

[0041] A first retaining groove 28 for mounting the first bending section 18 is provided at the first limiting groove 13, and a second retaining groove 30 for mounting the second bending section 31 is provided at the second limiting groove 14, so as to improve the installation stability of the first elastic member 16 and the second elastic member 17.

[0042] The second elastic member 17 is composed of a second bending section 31 , a second mounting section 32 , a first elastic section 33 and a second elastic section 34 . The second mounting section 32 is disposed in the second limiting groove 14 , and the pressure section 23 is disposed on the second elastic section 34 .

[0043] like Fig.10 As shown, the first elastic member 16 and the second elastic member 17 in the figure are Fig.11 In the state after the first elastic member 16 and the second elastic member 17 are deformed by force, the first elastic member 16 and the second elastic member 17 are pushed downward by the limiting plate 26, so that the first elastic member 16 pushes the second elastic member 17 downward to deform. The limiting plate 26 can push the first elastic member 16 and the second elastic member 17 upward by the elastic force generated after the first elastic member 16 and the second elastic member 17 are deformed by force, but because the limiting block 35 is placed in the limiting opening 36, the limiting plate 26 is restricted by the limiting block 35 and cannot move upward, so that the filter cover 4 is installed on the air intake pipe 6.

[0044] A stopper 35 is provided at one end of the elastic arm 39. The stopper 35 is triangular in shape, and a guide slope 37 is provided on the stopper 35. A push arc surface 38 cooperating with the guide slope 37 is provided on the stopper plate 26. One side of the elastic arm 39 is in the positioning groove 11, and the other side forms a compression area 40 where the elastic arm 39 is deformed and moved under force. The guide slope 37 can cooperate with the push arc surface 38 to push the stopper 35, so that the elastic arm 39 is forced to enter the compression area 40.

[0045] The filter cover 4 is inserted into the positioning groove 11 through the limiting plate 26, and the limiting block 35 is placed in the limiting opening 36 to limit the position of the limiting plate 26. The filter cover 4 is composed of an inner ring 41 and an outer ring 42. The filter cover 4 is provided with multiple filter holes 43. An air inlet chamber 44 is formed in the middle of the inner ring 41, and the air inlet chamber 44 is connected to the air inlet hole 9. A receiving chamber 45 is formed between the inner ring 41 and the outer ring 42. The fixing sleeve 8 is arranged in the receiving chamber 45. A movable groove 46 is arranged on the top wall of the receiving chamber 45. The limiting plate 26 cooperating with the positioning groove 11 is arranged in the movable groove 46. An inclined surface 47 is arranged on one side of the movable groove 46.

[0046] The limiting plate 26 is provided with a limiting opening 36 cooperating with the limiting block 35 , and the first elastic member 16 and the second elastic member 17 are subjected to the pressure of the limiting plate 26 to keep the limiting block 35 in the limiting opening 36 .

[0047] The upper end of the limiting plate 26 is provided with a first mounting hole 48 and an arc-shaped hole 49, and the filter cover 4 is provided with a second mounting hole 50 matched with the first mounting hole 48 and a third mounting hole 51 matched with the arc-shaped hole 49. A hinge rod 52 is provided in the first mounting hole 48 and the second mounting hole 50, and a positioning rod 53 is provided in the arc-shaped hole 49 and the third mounting hole 51. When the filter cover 4 is installed on the intake pipe 6 through the limiting plate 26, the positioning rod 53 is kept at the lower end of the arc-shaped hole 49.

[0048] The hinge rod 52 can limit the position of the limit plate 26 to always be in the movable groove 46 , but the arc-shaped hole 49 can keep the limit plate 26 rotating, so that the limit block 35 is separated from the limit opening 36 .

[0049] The positioning groove 11 is provided with a first blocking slope 54, a second blocking slope 55 and a vertical surface 56, wherein the first blocking slope 54 is arranged at the opposite surface of the vertical surface 56. The second blocking slope 55 is at the lower end of the vertical surface 56, the first limiting groove 13 is arranged at the lower ends of the vertical surface 56 and the second blocking slope 55, the second limiting groove 14 is arranged at the lower end of the first blocking slope 54, the elastic arm 39 is at the lower end of the first blocking slope 54, and the first blocking slope 54 and the second blocking slope 55 are arranged in parallel.

[0050] A first active area 57 is formed between the first blocking inclined surface 54 and the limiting plate 26 , and a second active area 58 is formed between the second blocking inclined surface 55 and the limiting plate 26 .

[0051] An extension section 59 is provided in the positioning groove 11, and the extension section 59 can limit the position of the second mounting section 32 and limit the reset angle of the second elastic section 34. Fig.11 As shown, at this time, the angle between the second installation section 32 and the first elastic section 33 is H1, but when the second elastic member 17 is not installed, the angle between the second installation section 32 and the first elastic section 33 is H2, H1>H2.

[0052] The first arc segment 24 is pushed by the force and encounters the obstruction of the second obstruction slope 55 , and a limiting arc surface 29 cooperating with the limiting arc opening 27 is provided on the limiting plate 26 .

[0053] When the filter cover 4 needs to be removed from the air intake pipe 6, no external tools are required, and the filter cover 4 only needs to be rotated. When disassembling, the filter cover 4 is first rotated in the direction of F1. Since the first blocking surface and the elastic arm 39 form an angle, the angle will be blocked, and the upper end of the limit plate 26 can be rotated along with the filter cover 4 in the direction of F1, but the lower end is blocked by the elastic arm 39, so it will not rotate along with it. However, the lower end of the limit plate 26 can use the angle 15 as a fulcrum to keep the lower end of the limit plate 26 rotating in the opposite direction of the filter cover 4, that is, rotating in the direction of F3, so that the limit plate 26 pushes the first elastic member 16 to rotate into the second active area 58, and the upper end of the limit plate 26 rotates into the first active area 57, that is, rotating in the direction of F2, and the side of the limit plate 26 is kept in contact with the inclined surface 47 in the active groove 46. At the same time, the limiting plate 26 is kept to rotate around the hinge rod 52, and the positioning rod 53 can move in the arc hole 49 from the lower end to the upper end of the arc hole 49. And the limiting block 35 is kept to push the limiting opening 36, so that the limiting plate 26 can be taken out of the positioning groove 11 at an angle.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A blower air filter structure, characterized in that: include: A housing, one end of the housing is provided with a motor, the other end is provided with an air intake pipe, the lower end of the motor is provided with a bracket, and a filter cover is provided on the air intake pipe. The air intake pipe is composed of an air intake seat and a fixing sleeve, an air intake hole is formed in the middle of the fixing sleeve, a fixing groove and a positioning groove are arranged on the outer wall of the fixing sleeve, a fixing plate is arranged in the fixing groove, a first limiting groove, a second limiting groove and an elastic arm are arranged in the positioning groove, a first elastic member is arranged in the first limiting groove, a second elastic member is arranged in the second limiting groove, the first elastic member is arranged at the upper end of the second elastic member, and a limiting block is arranged at one end of the elastic arm, The filter cover is composed of an inner ring and an outer ring, the filter cover is provided with multiple filter holes, an air inlet chamber is formed in the middle of the inner ring, the air inlet chamber is connected with the air inlet hole, a receiving chamber is formed between the inner ring and the outer ring, the fixed sleeve is arranged in the receiving chamber, a movable groove is provided on the top wall of the receiving chamber, a limiting plate matched with the positioning groove is provided in the movable groove, a limiting opening matched with the limiting block is provided on the limiting plate, the first elastic member and the second elastic member are subjected to the pressure of the limiting plate to keep the limiting block under force in the limiting opening, the filter cover is inserted into the positioning groove through the limiting plate, and the limiting block is placed in the limiting opening to limit the position of the limiting plate.

2. The blower air filter structure according to claim 1, characterized in that: One side of the movable groove is provided with an inclined surface.

3. The blower air filter structure according to claim 2, characterized in that: The upper end of the limiting plate is provided with a first mounting hole and an arc-shaped hole, the filter cover is provided with a second mounting hole matching with the first mounting hole and a third mounting hole matching with the arc-shaped hole, a hinged rod is provided in the first mounting hole and the second mounting hole, and a positioning rod is provided in the arc-shaped hole and the third mounting hole. When the filter cover is installed on the intake pipe through the limiting plate, the positioning rod is kept at the lower end of the arc-shaped hole.

4. The blower air filter structure according to claim 1, characterized in that: The limiting block is triangular in shape and is provided with a guiding inclined surface.

5. The blower air filter structure according to claim 4, characterized in that: The limiting plate is provided with a pushing arc surface which cooperates with the guiding inclined surface.

6. The blower air filter structure according to claim 1, characterized in that: One side of the elastic arm is in the positioning groove, and the other side forms a compression area where the elastic arm is deformed and moved under force.

7. The blower air filter structure according to claim 1, characterized in that: A first blocking slope, a second blocking slope and a vertical surface are provided in the positioning groove, the first blocking slope is arranged at the vertical surface, the second blocking slope is at the lower end of the vertical surface, the first limiting groove is arranged at the lower ends of the vertical surface and the second blocking surface, the second limiting groove is arranged at the lower end of the first blocking slope, the elastic arm is at the lower end of the first blocking slope, and the first blocking slope and the second blocking slope are arranged in parallel.

8. The blower air filter structure according to claim 7, characterized in that: A first active area is formed between the first blocking inclined surface and the limiting plate, and a second active area is formed between the second blocking inclined surface and the limiting plate.

9. The blower air filter structure according to claim 8, characterized in that: The first elastic member is composed of a first bending section, a first mounting section, a first deformation section, a second deformation section, a matching section and a pressure section. The first mounting section is arranged in a first limiting groove. The first bending section and the first mounting section are arranged perpendicularly. The first mounting section and the first deformation section are connected by a first arc section. The first deformation section and the second deformation section are connected by a second arc section. A limiting arc opening that matches the limiting plate is formed at the matching section. The pressure section is placed on the second elastic member.

10. The blower air filter structure according to claim 9, characterized in that: The second elastic member is composed of a second bending section, a second mounting section, a first elastic section and a second elastic section. The second mounting section is arranged in the second limiting groove, and the pressure section is placed on the second elastic section.

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