Novel cylindrical air filter structure

Abstract

The utility model relates to the technical field of air filters, and discloses a novel cylindrical air filter structure which comprises a filter shell, a filter element of a cylindrical structure is placed in the filter shell, and a gap is reserved between the circumferential outer wall of the filter element and the circumferential inner wall of the filter shell; the top of one side of the filter shell is provided with an air inlet pipe, the inner side inclination angle is arranged on the inner wall of the side, close to the filter shell, of the air inlet pipe, airflow injected into the filter shell is guided downwards through the inner side inclination angle, and the resistance of air flowing into the filter shell is reduced; meanwhile, airflow flows towards the middle position of the filter element after entering the filter shell, the air entering the filter shell firstly flows downwards to bypass the flow guide ring and then penetrates through the filter element, part of the air directly penetrates through the flow guide ring through the vent grooves and the vent holes, the resistance of the flow guide ring to the air is relieved, the utilization uniformity of the filter element can be achieved, and the utilization efficiency of the filter element is improved. And the product flow resistance can also be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air filters, in particular to a novel cylindrical air filter structure. Background Art

[0002] When the existing cylindrical air filter is in use, air directly passes through the filter element through the air inlet and enters the downstream, resulting in excessive use of the upper part of the filter element and insufficient use of the lower part. Therefore, a new cylindrical air filter structure is urgently needed to solve the above problem. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a new cylindrical air filter structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A novel cylindrical air filter structure comprises a filter housing, wherein a filter element of a cylindrical structure is placed inside the filter housing, and a gap is left between the circumferential outer wall of the filter element and the circumferential inner wall of the filter housing; an air inlet pipe is arranged on the top of one side of the filter housing, for injecting air to be filtered into the filter housing; an outer straight pipe section is arranged at the end of the air inlet pipe away from the filter housing, for connecting with a rain cap, a pre-filter, a high-position air inlet pipe or other pipelines; an inner side inclination angle is arranged on the inner wall of the end of the air inlet pipe close to the filter housing, for guiding the airflow injected into the filter housing through the outer straight pipe section to the middle position of the filter element; a guide ring of an annular structure is installed on the top inner wall of the filter housing, the guide ring is located between the filter element and the filter housing, and is used to guide the airflow injected into the filter housing; ventilation grooves distributed at intervals are arranged on the circumference of the guide ring, and ventilation holes are arranged on the side wall of the guide ring close to the opening of the air inlet pipe.

[0006] As a further solution of the utility model: the bottom of the guide ring extends to the bottom of the intake pipe opening, and the opening position of the intake pipe corresponds to the opening position of the ventilation groove.

[0007] As a further solution of the utility model: an air outlet pipe is arranged at the bottom of one side of the filter housing for discharging the air filtered by the filter element.

[0008] As a further solution of the utility model: the filter housing includes a first housing and a second housing assembled with each other, the top of the circumferential outer wall of the first housing is provided with a supporting side wing, and the bottom of the circumferential outer wall of the second housing is provided with a connecting side wing, and the position of the connecting side wing corresponds to the position of the supporting side wing.

[0009] As a further solution of the present invention: the side wall of the second shell is provided with a shell reinforcement structure.

[0010] The beneficial effects of the utility model are as follows: when in use, air to be filtered is injected into the filter housing through the air inlet pipe, and an inner side inclination angle is set on the inner wall of one side of the air inlet pipe close to the filter housing. The inner side inclination angle guides the airflow injected into the filter housing downward, reduces the resistance of air flowing into the filter housing, and also makes the airflow flow to the middle position of the filter element after entering the filter housing. The guide ring intercepts and guides the airflow injected into the filter housing, so that the air entering the filter housing first flows downward to bypass the guide ring, and then passes through the filter element. In the process of bypassing the guide ring, part of the air directly passes through the guide ring through the ventilation groove and the ventilation hole, thereby reducing the resistance of the guide ring to the air, which can not only achieve uniformity of filter element utilization, but also reduce product flow resistance; through the optimization of the housing structure, the flow field uniformity of the gas passing through the filter element is improved, the product pressure difference is reduced, and the utilization rate and uniformity of the filter element are also improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a partial structural cross-sectional view of a novel cylindrical air filter structure proposed by the utility model;

[0012] Figure 2 This is a cross-sectional view of the overall structure of a new cylindrical air filter structure proposed by the utility model;

[0013] Figure 3 This is a side structural schematic diagram of a novel cylindrical air filter structure proposed by the utility model;

[0014] Figure 4 for Figure 2 A magnified view of the local structure at point A.

[0015] In the figure: 1- guide ring, 2- vent hole, 3- air inlet pipe, 31- outer straight pipe section, 32- inner inclination angle, 4- filter housing, 41- first housing, 42- second housing, 5- supporting side wings, 6- outlet pipe, 7- filter element, 8- housing reinforcement structure, 9- vent groove, 10- connecting side wings. DETAILED DESCRIPTION

[0016] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0017] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0018] Reference Figure 1-4 A novel cylindrical air filter structure comprises a filter housing 4, a filter element 7 of a cylindrical structure is placed inside the filter housing 4, and a gap is left between the circumferential outer wall of the filter element 7 and the circumferential inner wall of the filter housing 4; an air inlet pipe 3 is arranged on the top of one side of the filter housing 4, for injecting air to be filtered into the filter housing 4; an outer straight pipe section 31 is arranged at one end of the air inlet pipe 3 away from the filter housing 4, for connecting with a rain cap, a pre-filter, a high-position air inlet pipe or other pipelines; the air inlet pipe 3 is provided at one end of the air inlet pipe 3 away from the filter housing 4, for connecting with a rain cap, a pre-filter, a high-position air inlet pipe or other pipelines; An inner wall at one end of the air pipe 3 close to the filter housing 4 is provided with an inner inclination angle 32, which is used to guide the airflow injected into the filter housing 4 through the outer straight pipe section 31 to the middle position of the filter element 7; a guide ring 1 with an annular structure is installed on the top inner wall of the filter housing 4, and the guide ring 1 is located between the filter element 7 and the filter housing 4, and is used to guide the airflow injected into the filter housing 4; ventilation grooves 9 are arranged at intervals on the circumference of the guide ring 1, and a ventilation hole 2 is arranged on the side wall of the guide ring 1 close to the opening of the intake pipe 3.

[0019] When in use, the air to be filtered is injected into the filter housing 4 through the air inlet pipe 3. An inner wall of the air inlet pipe 3 close to the filter housing 4 is provided with an inner inclination angle 32. The inner inclination angle 32 guides the airflow injected into the filter housing 4 downward, reduces the resistance of the air flowing into the filter housing 4, and also makes the airflow flow to the middle position of the filter element 7 after entering the filter housing 4. The guide ring 1 intercepts and guides the airflow injected into the filter housing 4, so that the air entering the filter housing 4 first flows downward to bypass the guide ring 1, and then passes through the filter element 7. In the process of bypassing the guide ring 1, part of the air directly passes through the guide ring 1 through the ventilation groove 9 and the ventilation hole 2, thereby reducing the resistance of the guide ring 1 to the air, which can not only achieve the uniformity of the utilization of the filter element 7, but also reduce the product flow resistance.

[0020] As a preferred embodiment of the present utility model, the bottom of the guide ring 1 extends to the bottom of the opening of the intake pipe 3 , and the opening position of the intake pipe 3 corresponds to the opening position of the ventilation groove 9 .

[0021] As a preferred embodiment of the utility model, an air outlet pipe 6 is provided at the bottom of one side of the filter housing 4 for discharging air filtered by the filter element 7 .

[0022] As a preferred embodiment of the present utility model, the filter housing 4 includes a first housing 41 and a second housing 42 which are assembled with each other. A supporting wing 5 is provided on the top of the circumferential outer wall of the first housing 41, and a connecting wing 10 is provided on the bottom of the circumferential outer wall of the second housing 42. The position of the connecting wing 10 corresponds to the position of the supporting wing 5. When the filter element 7 needs to be replaced, the second housing 42 can be taken upward, and then the second housing 42 and the first housing 41 can be disassembled to facilitate the replacement of the filter element 7. After the filter element 7 is replaced, the second housing 42 is covered on the top of the filter element 7. At this time, the supporting wing 5 supports the connecting wing 10, and the connection between the supporting wing 5 and the connecting wing 10 can seal the gap between the first housing 41 and the second housing 42.

[0023] As a preferred embodiment of the present invention, a shell reinforcement structure 8 is provided on the side wall of the second shell 42 .

[0024] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A novel cylindrical air filter structure, comprising a filter housing (4), characterized in that: A filter element (7) with a cylindrical structure is placed inside the filter housing (4), and a gap is left between the circumferential outer wall of the filter element (7) and the circumferential inner wall of the filter housing (4); An air inlet pipe (3) is provided at the top of one side of the filter housing (4) for injecting air to be filtered into the filter housing (4); An outer straight pipe section (31) is provided at one end of the air inlet pipe (3) away from the filter housing (4); An inner wall of one end of the air inlet pipe (3) close to the filter housing (4) is provided with an inner inclination angle (32) for guiding the airflow injected into the filter housing (4) through the outer straight pipe section (31) toward the middle position of the filter element (7); A guide ring (1) with an annular structure is installed on the top inner wall of the filter housing (4); the guide ring (1) is located between the filter element (7) and the filter housing (4) and is used to guide the airflow injected into the filter housing (4); The circumference of the guide ring (1) is provided with ventilation grooves (9) distributed at intervals, and the side wall of the guide ring (1) close to the opening of the air inlet pipe (3) is provided with ventilation holes (2).

2. A novel cylindrical air filter structure according to claim 1, characterized in that: The bottom of the guide ring (1) extends to the bottom of the opening of the air intake pipe (3), and the opening position of the air intake pipe (3) corresponds to the opening position of the ventilation groove (9).

3. A novel cylindrical air filter structure according to claim 1, characterized in that: An air outlet pipe (6) is provided at the bottom of one side of the filter housing (4) for discharging air filtered by the filter element (7).

4. A novel cylindrical air filter structure according to claim 1, characterized in that: The filter housing (4) comprises a first housing (41) and a second housing (42) which are assembled with each other, a supporting wing (5) is arranged at the top of the circumferential outer wall of the first housing (41), and a connecting wing (10) is arranged at the bottom of the circumferential outer wall of the second housing (42), and the position of the connecting wing (10) corresponds to the position of the supporting wing (5).

5. A novel cylindrical air filter structure according to claim 4, characterized in that: The side wall of the second shell (42) is provided with a shell reinforcement structure (8).

Images