阅读说明：本技术 一种负压排风高效过滤装置 (Negative-pressure air-exhaust efficient filtering device ) 是由 刘志坚 刘海洋 靳光亚 宋扬凡 于 2021-11-16 设计创作，主要内容包括：本发明公开了一种负压排风高效过滤装置,包括排风接口,其中,所述排风接口为管型接口,其底部外壁固定有一圈端盖,所述端盖底部设有绕其一圈圆周分布的多片过滤叶片,每片过滤叶片通过转轴与端盖可转动地连接,所述转轴贯穿到端盖的上表面上,所述转轴远离端盖的一端共同可转动地连接到底盖中,所述底盖下方设有可拆卸的集尘盒；所述排风接口、端盖、底盖与过滤叶片围成的内部空间贯通；所述端盖上设有能够调节过滤叶片转角的叶片调整组件。与现有技术相比,本发明能够将排出气流的杂质颗粒捕集到过滤叶片的表面上,并且能够根据排风气流的流速和气流中的杂质浓度,通过叶片调整组件调节过滤叶片的间隙间大小,还具有清理过滤叶片的功能。(The invention discloses a negative-pressure air-exhaust high-efficiency filtering device which comprises an air-exhaust interface, wherein the air-exhaust interface is a tubular interface, a circle of end cover is fixed on the outer wall of the bottom of the air-exhaust interface, a plurality of filtering blades distributed around the circle of the air-exhaust interface are arranged at the bottom of the end cover, each filtering blade is rotatably connected with the end cover through a rotating shaft, the rotating shaft penetrates through the upper surface of the end cover, one ends of the rotating shafts, far away from the end cover, are rotatably connected into a bottom cover together, and a detachable dust collection box is arranged below the bottom cover; the air exhaust interface, the end cover and the bottom cover are communicated with an inner space defined by the filter blades; and the end cover is provided with a blade adjusting assembly capable of adjusting the rotation angle of the filter blade. Compared with the prior art, the invention can collect the impurity particles of the exhausted airflow on the surface of the filter blade, can adjust the size of the gap between the filter blades through the blade adjusting assembly according to the flow velocity of the exhausted airflow and the impurity concentration in the airflow, and also has the function of cleaning the filter blade.)

1. The negative-pressure air-exhaust efficient filtering device comprises an air-exhaust interface (1), and is characterized in that the air-exhaust interface (1) is a pipe type interface, a circle of end cover (2) is fixed on the outer wall of the bottom of the air-exhaust interface, a plurality of filtering blades (3) distributed around the circle of the end cover (2) are arranged at the bottom of the end cover (2), each filtering blade (3) is rotatably connected with the end cover (2) through a rotating shaft (31), the rotating shaft (31) penetrates through the upper surface of the end cover (2), one end of the rotating shaft (31), which is far away from the end cover (2), is rotatably connected into a bottom cover (4) together, and a detachable dust collecting box (5) is arranged below the bottom cover (4);

the air exhaust interface (1), the end cover (2), the bottom cover (4) and the filter blade (3) are enclosed to form an internal space which is communicated;

and the end cover (2) is provided with a blade adjusting component (6) capable of adjusting the rotation angle of the filter blade (3).

2. The negative-pressure air-exhausting efficient filtering device according to claim 1, wherein at least two lead screw rods (8) are fixed outside the outer walls of the end cover (2) to the bottom cover (4), the lead screw rods (8) are connected with the blade cleaning assembly (7) in common, a driving motor (9) is fixed in the bottom cover (4), and the output shaft of the driving motor (9) is connected into the lead screw rods (8).

3. The negative-pressure air-exhausting efficient filtering device according to claim 1, wherein the vane adjusting assembly (6) comprises a plurality of first connecting rods (62), one end of each first connecting rod (62) is fixedly connected with each rotating shaft (31), the other end of each first connecting rod (62) is hinged to a second connecting rod (63), the other end of each second connecting rod (63) is hinged to the edge of the same hinge ring (61), and the hinge ring (61) is rotatably sleeved in the outer wall of the air-exhausting port (1).

4. A negative pressure air exhaust high-efficiency filter device according to claim 3, characterized in that a rotating handle (64) extending to the outside of the outer wall of the end cover (2) is fixed on the hinge ring (61), a fixed handle (21) extending to the outside of the outer wall is also fixed on the end cover (2), and the fixed handle (21) and the rotating handle (64) are connected through a servo telescopic rod (22):

the tail end of a cylinder body of the servo telescopic rod (22) is hinged to the fixed handle (21), and the tail end of a piston rod of the servo telescopic rod (22) is hinged to the rotating handle (64).

5. The negative-pressure air-exhausting efficient filtering device according to claim 2, wherein the blade cleaning assembly (7) comprises a fixing ring (71), the fixing ring (71) is sleeved on the periphery of a cylinder surrounded by the filtering blades (3), and the fixing ring (71) is in fit connection with the lead screw rod (8) through a lead screw nut (72);

a rotatable rotating ring (73) can be arranged in the fixed ring (71), and a cleaning brush rod (75) extending between gaps of the filter blades (3) is arranged in the rotating ring (73).

6. A negative pressure air exhaust high efficiency filter device according to claim 5, characterized in that the ends of the cleaning brush rods (75) far away from the rotating ring (73) are connected together in an inner ring (77):

the inner ring (77) is positioned in a cylinder surrounded by the filter blades (3), at least two guide shafts (78) are connected in the inner ring (77) in a sliding manner, and two ends of each guide shaft (78) are fixedly connected with the end cover (2) and the bottom cover (4) respectively.

7. A negative pressure air exhaust high-efficiency filtering device according to claim 5, characterized in that the outer wall of the rotating ring (73) is fixed with a vertical bolt (74), the bolt (74) is concentric with the connecting sleeve (23) fixed below the rotating handle (64), the connecting sleeve (23) is in an inverted funnel shape with an expanded lower part, when the rotating ring (73) moves to the uppermost end, the bolt (74) is inserted into the connecting sleeve (23) so as to fixedly connect the rotating ring (73) with the hinge ring (61).

8. The negative-pressure air-exhaust high-efficiency filtering device is characterized in that the cleaning brush rod (75) is hinged to the rotating ring (73) through a brush rod hinge (76), the cleaning brush rod (75) is connected with the inner ring (77) through a connecting hole (771) formed in the inner ring (77) in a penetrating mode, and the cleaning brush rod (75) can stretch and rotate in the connecting hole (771).

9. A negative pressure air exhaust high efficiency filter device according to claim 1, characterized in that the filter blade (3) is a hollow cavity with the surface being an air permeable filter screen.

10. A negative pressure air exhaust high efficiency filter device according to claim 9, characterized in that the side filter screen near the outside of the filter blade (3) is provided with diversion holes (32).

Technical Field

The invention relates to the technical field of air filtration, in particular to a negative-pressure air-exhaust high-efficiency filtering device.

Background

The negative pressure air exhaust equipment is a machine which utilizes the cooling principle of air convection and negative pressure ventilation, and is a machine which can improve any problem of poor ventilation by naturally sucking fresh air from a gate or a window opposite to an installation place and quickly and forcibly exhausting indoor hot air out of the room.

The exhaust air of an area containing pollutants is filtered by a high-efficiency filter and then discharged, the existing filter is provided with a device for filtering the pollutants in the discharged air flow through a filter screen, but the particle pollutants in the air can pollute and block the filter, the service life of the high-efficiency filter is greatly shortened, and the use cost of the filter is high; the existing filtering air has a device for collecting air flow by rapidly changing the direction of the air flow by using the inertia of impurity particles, however, when the flow rate of the air flow passing through a flow filter is large, the discharge speed of the air flow is limited to reduce the filtering efficiency, and when the flow rate of the air flow is small, the speed of the impurity particles in the air flow is possibly insufficient to enable the impurity particles to collide with a barrier to escape, so that the filtering effect is influenced, and the filtering air cannot be well suitable for negative pressure air exhaust equipment with different air flow rates.

Therefore, there is a need to provide a negative pressure air exhaust high efficiency filter device to solve the above problems in the background art.

Disclosure of Invention

In order to achieve the purpose, the invention provides the following technical scheme: a negative pressure air exhaust high-efficiency filter device comprises an air exhaust interface, wherein the air exhaust interface is a pipe type interface, a circle of end cover is fixed on the outer wall of the bottom of the air exhaust interface, a plurality of filter blades distributed around the circle of circumference of the end cover are arranged at the bottom of the end cover, each filter blade is rotatably connected with the end cover through a rotating shaft, the rotating shaft penetrates through the upper surface of the end cover, one ends of the rotating shafts, far away from the end cover, are jointly rotatably connected into a bottom cover, and a detachable dust collection box is arranged below the bottom cover;

the air exhaust interface, the end cover and the bottom cover are communicated with an inner space defined by the filter blades;

and the end cover is provided with a blade adjusting assembly capable of adjusting the rotation angle of the filter blade.

Further, preferably, at least two screw rods are fixed outside the outer wall from the end cover to the bottom cover, the blade cleaning assembly is connected between the screw rods, a driving motor is fixed in the bottom cover, and an output shaft of the driving motor is connected to the screw rods.

Further, as preferred, the blade adjusting component includes many connecting rods one, every the one end and every pivot fixed connection of connecting rod one, the other end of connecting rod one respectively articulates there is a connecting rod two, every the other end of connecting rod two articulates the edge of same articulated ring respectively, the articulated ring rotationally overlaps and establishes in the outer wall of the interface of airing exhaust.

Further, as a preferred option, a rotation handle extending to the outside of the outer wall of the end cover is fixed on the hinge ring, a fixed handle extending to the outside of the outer wall of the end cover is also fixed on the end cover, and the fixed handle and the rotation handle are connected through a servo telescopic rod:

the tail end of a cylinder body of the servo telescopic rod is hinged to the fixed handle, and the tail end of a piston rod of the servo telescopic rod is hinged to the rotating handle.

Further, preferably, the blade cleaning assembly comprises a fixing ring, the fixing ring is sleeved on the periphery of a cylinder surrounded by the filter blades, and the fixing ring is connected with the screw rod through a screw rod nut in a matched manner;

the fixed ring can be internally provided with a rotatable rotating ring, and the rotating ring is internally provided with a cleaning brush rod extending between the gaps of the filter blades.

Further, preferably, the ends of the cleaning brush rods, which are far away from the rotating ring, are connected together in the inner ring:

the inner ring is positioned in a cylinder defined by the filter blades, at least two guide shafts are connected in the inner ring in a sliding mode, and two ends of each guide shaft are fixedly connected with the end cover and the bottom cover respectively.

Further, as the preferred, the swivel collar outer wall is fixed with vertical bolt, the bolt is concentric with the adapter sleeve of fixing under the swivel handle, the adapter sleeve is the shape of the funnel that falls of below expansion, thereby when the swivel collar removed the top, thereby the bolt inserts in the adapter sleeve and makes swivel collar and articulated ring fixed connection.

Further, as an optimization, the cleaning brush rod is hinged with the rotating ring through a brush rod hinge, the cleaning brush rod is connected with the inner ring through a connecting hole formed in the penetrating inner ring, and the cleaning brush rod can stretch out and draw back and rotate in the connecting hole.

Further, preferably, the filter blade is a hollow cavity with the surface being an air-permeable filter screen.

Further, as a preferred option, a flow guide hole is formed in a side filter screen of the filter blade close to the outer side. Compared with the prior art, the invention has the beneficial effects that:

according to the invention, the servo telescopic rod is driven to stretch to push the rotating handle to drive the hinged ring to rotate, when the hinged ring rotates, each connecting rod II drives the corresponding connecting rod I to rotate, so that the corresponding rotating shaft rotates, each filter blade synchronously rotates, and when the included angle between the width direction of each filter blade and the straight line from the rotating shaft to the center of the end cover is larger, the gap between each filter blade is smaller;

because the clearance of the filter blade and the airflow flowing out from the center of the cylinder enclosed by the filter blade form a certain included angle, when the airflow passes through the clearance of the filter blade, the airflow collides with the filter blade to change the airflow direction sharply, most of the air enters the atmosphere through the clearance of the filter blade, and impurities such as particle dust and the like still move forwards along the original direction due to the inertia effect and are trapped on the surface of the filter blade, so that the airflow is filtered and purified, and the size of the clearance of the filter blade can be adjusted through the blade adjusting assembly according to the flow rate of the exhaust airflow and the impurity concentration in the airflow.

In the invention, the blade cleaning assembly also has the function of cleaning the filter blade, and when the hinged ring rotates to enable the filter blade to rotate and change the angle, the connecting sleeve can be linked with the bolt to enable the rotating ring to synchronously rotate, so that the angle of the cleaning brush rod is changed at the same time, the cleaning brush rod is always kept in a state of being parallel to the filter blade, and the filter blade can be smoothly cleaned.

Drawings

FIG. 1 is a schematic structural view of a negative pressure air exhaust high efficiency filter device;

FIG. 2 is a schematic view of the upper structure of a negative pressure air exhaust high efficiency filter device;

FIG. 3 is a schematic view of a blade adjusting assembly of a negative pressure air exhaust high efficiency filtering device;

FIG. 4 is a schematic view of a blade cleaning assembly of a negative pressure air exhaust high efficiency filter device;

FIG. 5 is a schematic view of a filter blade structure of a negative pressure air exhaust high efficiency filter device;

in the figure: 1. an air exhaust interface; 2. an end cap; 21. a fixed handle; 22. a servo telescopic rod; 23. connecting sleeves; 3. a filter blade; 31. a rotating shaft; 32. a flow guide hole; 4. a bottom cover; 5. a dust collecting box; 6. a blade adjustment assembly; 7. a blade cleaning assembly; 8. a screw rod and a screw rod; 9. a drive motor; 61. a hinge ring; 62. a first connecting rod; 63. a second connecting rod; 64. rotating the handle; 71. a fixing ring; 72. a feed screw nut; 73. a rotating ring; 74. a bolt; 75. cleaning the brush rod; 76. a brush bar hinge; 77. an inner ring; 771. connecting holes; 78. and a guide shaft.

Detailed Description

Referring to fig. 1, in the embodiment of the present invention, a negative pressure air exhaust high efficiency filter device includes an air exhaust interface 1, where the air exhaust interface 1 is a pipe type interface, a circle of end cover 2 is fixed on an outer wall of a bottom of the air exhaust interface, a plurality of filter blades 3 distributed around a circle of circumference of the end cover 2 are arranged at a bottom of the end cover 2, each filter blade 3 is rotatably connected with the end cover 2 through a rotating shaft 31, the rotating shaft 31 penetrates through an upper surface of the end cover 2, one end of the rotating shaft 31, which is far away from the end cover 2, is rotatably connected to a bottom cover 4, and a detachable dust collecting box 5 is arranged below the bottom cover 4;

the air exhaust interface 1, the end cover 2, the bottom cover 4 and the filter blade 3 form an internal space which is communicated;

and the end cover 2 is provided with a blade adjusting component 6 capable of adjusting the rotation angle of the filter blade 3.

In this embodiment, at least two lead screw rods 8 are fixed outside the outer wall of the end cover 2 to the bottom cover 4, the lead screw rods 8 are connected with a blade cleaning assembly 7, a driving motor 9 is fixed in the bottom cover 4, and an output shaft of the driving motor 9 is connected to the lead screw rods 8.

Referring to fig. 2 and 3, in the present embodiment, the vane adjusting assembly 6 includes a plurality of first connecting rods 62, one end of each first connecting rod 62 is fixedly connected to each rotating shaft 31, the other end of each first connecting rod 62 is hinged to a second connecting rod 63, the other end of each second connecting rod 63 is hinged to the edge of the same hinge ring 61, and the hinge ring 61 is rotatably sleeved in the outer wall of the air exhaust interface 1;

when the hinge ring 61 rotates, each second connecting rod 63 drives the corresponding first connecting rod 62 to rotate, so that the corresponding rotating shaft 31 rotates, each filter blade 3 synchronously rotates, and when the included angle between the width direction of each second connecting rod and the straight line from the rotating shaft 31 to the circle center of the end cover 2 is larger, the gap between each filter blade 3 is smaller;

because the clearance of the filter blade 3 and the airflow flowing out from the center of the cylinder enclosed by the filter blade 3 form a certain included angle, when the airflow passes through the clearance of the filter blade 3, the airflow collides with the filter blade 3 to change the airflow direction rapidly, most of the air enters the clearance of the filter blade 3 and is discharged into the atmosphere, and impurities such as particle dust and the like move forwards according to the original direction due to the inertia effect and are captured on the surface of the filter blade 3, so that the airflow is filtered and purified;

in this embodiment, a rotating handle 64 extending out of the outer wall of the end cap 2 is fixed on the hinge ring 61, a fixing handle 21 extending out of the outer wall of the end cap 2 is also fixed on the end cap 2, and the fixing handle 21 and the rotating handle 64 are connected through a servo telescopic rod 22:

the tail end of the cylinder body of the servo telescopic rod 22 is hinged with the fixed handle 21, and the tail end of the piston rod of the servo telescopic rod 22 is hinged with the rotating handle 64;

that is, the rotation angle of the filter blade 3 can be controlled by driving the telescopic rod 22 to extend and retract to push the rotating handle 64 to rotate the hinge ring 61.

Referring to fig. 2 and 4, in the present embodiment, the vane cleaning assembly 7 includes a fixing ring 71, the fixing ring 71 is sleeved on the periphery of a cylinder surrounded by the filter vanes 3, and the fixing ring 71 is connected with the lead screw 8 through a lead screw nut 72;

a rotatable rotating ring 73 may be provided in the fixed ring 71, and a cleaning brush bar 75 extending between the gaps of the filter blades 3 is provided in the rotating ring 73.

In this embodiment, the ends of the cleaning brush bars 75 remote from the rotating ring 73 are connected together in an inner ring 77:

the inner ring 77 is located in a cylinder surrounded by the filter blades 3, at least two guide shafts 78 are slidably connected in the inner ring 77, and two ends of each guide shaft 78 are fixedly connected with the end cover 2 and the bottom cover 4 respectively.

In this embodiment, the cleaning brush bar 75 is hinged to the rotating ring 73 through a brush bar hinge 76, the cleaning brush bar 75 is connected to the inner ring 77 through a connecting hole 771 formed through the inner ring 77, and the cleaning brush bar 75 can extend and retract and rotate in the connecting hole 771;

that is, when the rotating ring 73 rotates, the cleaning brush bar 75 is driven to rotate, so that the brush bar hinge 76 and the connecting hole 771 are staggered by a certain position, the two ends of the cleaning brush bar 75 are asymmetric and inclined by a certain angle, and the filter blade 3 rotating by a certain angle can be cleaned.

Referring to fig. 2, in the present embodiment, a vertical pin 74 is fixed on an outer wall of the rotating ring 73, the pin 74 is concentric with the connecting sleeve 23 fixed below the rotating handle 64, the connecting sleeve 23 is in an inverted funnel shape with an expanded lower portion, and when the rotating ring 73 moves to the uppermost end, the pin 74 is inserted into the connecting sleeve 23 so as to fixedly connect the rotating ring 73 with the hinge ring 61;

that is, when the hinge ring 61 rotates to rotate the filter blade 3 to change the angle, the connecting sleeve 23 can be linked with the latch 74 to synchronously rotate the rotating ring 73, thereby simultaneously changing the angle of the cleaning brush bar 75, so that the cleaning brush bar 75 is always kept in a state of being parallel to the filter blade 3, and ensuring smooth cleaning of the filter blade 3;

it should be noted that when the rotating ring 73 is moved to the highest position, i.e. when the pin 74 is inserted into the connecting sleeve 23, the telescopic servo rod 22 can telescopically drive the hinge ring 61 and the rotating ring 73 to rotate, and simultaneously change the rotation angles of the filter blade 3 and the cleaning brush bar 75 to ensure that the two are kept parallel.

Referring to fig. 5, in the present embodiment, the filter blade 3 is a hollow cavity with a surface being a breathable filter net, that is, a part of the airflow colliding with the filter blade 3 can be filtered by the filter net and then directly penetrates through the filter blade 3 to be discharged into the atmosphere, so as to achieve a filtering effect.

In this embodiment, a flow guiding hole 32 is formed in a side filter screen of the filter blade 3 near the outer side, so that the airflow penetrating through the filter screen and entering the filter blade 3 can be discharged into the atmosphere.

During specific implementation, an exhaust pipe of the negative pressure exhaust device is connected into the exhaust interface 1, air flow enters a cylinder body surrounded by the filter blades 3 from the exhaust interface 1 and is exhausted to the atmosphere by penetrating through the filter blades 3 or from gaps among the filter blades 3, and the size of the gaps among the filter blades 3 is adjusted by the blade adjusting assembly 6 according to the flow rate of the exhaust air flow and the impurity concentration in the air flow, wherein the specific adjusting mode is as follows:

the servo telescopic rod 22 is driven to stretch to push the rotating handle 64 to drive the hinged ring 61 to rotate, when the hinged ring 61 rotates, each connecting rod II 63 drives the corresponding connecting rod I62 to rotate, so that the corresponding rotating shaft 31 rotates, each filter blade 3 synchronously rotates, and when the included angle between the width direction of each connecting rod II and the straight line from the rotating shaft 31 to the circle center of the end cover 2 is larger, the gap between each filter blade 3 is smaller;

because the clearance of the filter blade 3 and the airflow flowing out from the center of the cylinder enclosed by the filter blade 3 form a certain included angle, when the airflow passes through the clearance of the filter blade 3, the airflow collides with the filter blade 3 to change the airflow direction rapidly, most of the air enters the clearance of the filter blade 3 and is discharged into the atmosphere, and impurities such as particle dust and the like move forwards according to the original direction due to the inertia effect and are captured on the surface of the filter blade 3, so that the airflow is filtered and purified;

theoretical analysis and practice prove that the filtering efficiency of the airflow flowing through the gap of the filtering blade 3 is related to the diameter and density of impurity particles, the rotation angle and the flow speed of the airflow; specifically, when the same airflow velocity is faster, the impurity particles in the airflow more easily collide into the filter blades 3, the rotation angle may be reduced to ensure the filtering efficiency, and when the airflow velocity is slower, the velocity of the impurity particles in the airflow may not be enough to collide into the filter blades 3 and escape from the gaps thereof, so that the rotation angle needs to be increased and the gaps of the filter blades 3 need to be reduced to ensure the filtering effect;

in addition, a part of the airflow colliding with the filter blade 3 can pass through the filter blade 3 after being filtered by the filter screen and is discharged to the atmosphere from the diversion hole 32, so that the filtering effect can be achieved;

after airing exhaust, still have the function of clearance filter vane 3 through blade clearance subassembly 7, specifically, it is rotatory through driving motor 9 drive lead screw 8, make solid fixed ring 71 reciprocate, and drive swivel becket 73 and reciprocate between filter vane 3 clearance at clearance brush-holder stud 75 of filter vane 3, thereby make clearance brush-holder stud 75 will filter in the foreign particle brush that depends on blade 3 falls to dust collection box 5, and clearance brush-holder stud 75 is rotatory along with filter vane 3's rotation, its concrete mode is:

when the hinge ring 61 rotates to rotate the filter blade 3 to change the angle, the connecting sleeve 23 can be linked with the bolt 74 to synchronously rotate the rotating ring 73, so that the angle of the cleaning brush rod 75 is changed at the same time, the cleaning brush rod 75 is always kept in a state of being parallel to the filter blade 3, and the filter blade 3 can be cleaned smoothly;

it should be noted that when the rotating ring 73 is moved to the highest position, i.e. when the pin 74 is inserted into the connecting sleeve 23, the telescopic servo rod 22 can telescopically drive the hinge ring 61 and the rotating ring 73 to rotate, and simultaneously change the rotation angles of the filter blade 3 and the cleaning brush bar 75 to ensure that the two are kept parallel.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.