A filter paper

Abstract

The application belongs to the technical field of filter component manufacturing, and particularly relates to a filter paper, which comprises a first filter material and a second filter material, the front surface of the first filter material is in closed connection with the front surface of the second filter material, the projection of the first filter material on a plane A is in a wave shape, the projection of the second filter material on the plane A is in a rectangular shape, the length line of the first filter material is in the plane A, the plane A is perpendicular to the front surface of the second filter material, the space formed by the first filter material and the second filter material is open at one end in the direction perpendicular to the plane A, and is in transition closed connection at the other end; the application solves the problems that the filter paper is easily broken or the airflow breaks the pressed part, and the airflow in the corrugated space is not filtered and directly flows out from the broken part.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of filter component manufacturing, and particularly relates to a filter paper. BACKGROUND

[0002] In the filter paper manufacturing process, there are two layers of filter paper, one is in a wave type, and the other is in a plane type, and the two layers of filter paper need to be bonded together, so that the wave type filter paper and the plane type filter paper are combined to form a plurality of spaces, and then one end of the space formed by the wave type filter paper and the plane type filter paper is sealed, and the other end is open. After the arrangement, when filtering air, the air enters from the open end of the space, and then flows out from the outside of the wave type filter paper or the plane type filter paper, and the impurities filtered are left in the space in the form of a strip. However, in the prior art, the wave type filter paper and the plane type filter paper are directly connected together at the closed end of the space in the form of a strip. Since the paper of the filter paper is very brittle and has poor toughness, the top end of the wave crest of the wave type filter paper is directly pressed onto the plane type filter paper at the closed end of the space in the form of a strip, which easily causes the filter paper to break. Even if the filter paper does not break, after the wave type filter paper is pressed to form an indentation, the indentation has very weak pressure resistance, and therefore the air flow easily causes the indentation to be broken, so that the air flow in the space in the form of a strip directly flows out from the broken part, thereby failing to achieve the filtering effect. Therefore, a new type of filter paper needs to be designed, so that the top end of the wave crest of the wave type filter paper is not directly pressed onto the plane type filter paper in the manufacturing process, thereby avoiding the situation that the filter paper is easily broken or an indentation with low pressure resistance is formed. SUMMARY

[0003] The application aims at the defects of the prior art, adopts a transition sealing connection mode, and designs a new type of filter paper, so that the top end of the wave crest of the wave type filter paper is not directly pressed onto the plane type filter paper in the manufacturing process, thereby solving the problems that the filter paper is easily broken or the indentation is broken by the air flow, and the air flow in the space in the form of a strip is not filtered but directly flows out from the broken part.

[0004] To achieve the above-mentioned purpose, the application provides the following technical scheme.

[0005] A filter paper comprises a first filter material and a second filter material, the front surface of the first filter material is in sealing connection with the front surface of the second filter material, the projection of the first filter material on a plane A is in a wave type, the projection of the second filter material on the plane A is in a rectangular shape, the length line of the first filter material is in the plane A, the plane A is perpendicular to the front surface of the second filter material, and the space formed by the first filter material and the second filter material is open at one end in the direction perpendicular to the plane A and is in transition sealing connection at the other end.

[0006] Preferably, the distance between the one end of the first filter material and the second filter material and the side of the one end of the first filter material and the second filter material away from the second filter material gradually decreases, and the gradually decreasing direction is towards the closed end of the space formed by the first filter material and the second filter material, and the gradually decreasing area of the distance between the second filter material and the first filter material is bonded by glue.

[0007] Preferably, the gradually decreasing area of the distance between the second filter material and the first filter material is bonded by three times, and a preset distance is provided between two adjacent bonding times.

[0008] Preferably, a support is provided on the gradually decreasing area of the distance between the second filter material and the first filter material and away from the closed end of the first filter material and the second filter material, and the support is bonded to the first filter material and the second filter material by glue respectively.

[0009] Preferably, a through hole is provided in the center of the support.

[0010] Preferably, the wave crest of the wave shape formed by the projection of the first filter material on the plane A is a symmetrical structure, and the symmetrical axis is the vertical connection line segment from the vertex of the wave crest of the wave shape to the front surface of the second filter material.

[0011] Preferably, a partition line parallel to the plane A is provided on the second filter material, and the distance from the partition line to the one end of the space formed by the first filter material and the second filter material is less than the distance from the partition line to the open end of the space formed by the first filter material and the second filter material.

[0012] The beneficial effects of the present application are:

[0013] 1. The transition closed connection method adopted in the present application can avoid directly extruding the vertex of the wave crest of the wave-shaped filter paper onto the planar filter paper during the manufacturing process, thereby solving the problem that the filter paper is easily broken or the airflow breaks the indentation, causing the airflow in the corrugated space to flow out directly from the broken part without being filtered.

[0014] 2. The preset distance between two adjacent bonding times in the present application can reduce the use of glue and provide a space for airflow buffering to prevent the first filter material from being broken by the airflow. In theory, the more the bonding times in the gradually decreasing area of the distance between the second filter material and the first filter material, the better the buffering effect. However, in order to balance the process and production cost, three bonding times are preferred.

[0015] 3. The support provided in the present application can reduce the extrusion amount of the first filter material and the amount of glue used, and the support can also support and reinforce the wave shape of the first filter material, thereby improving the service life. Attached Figure Description

[0016] Fig. 1 This is a schematic diagram of the structure of this application;

[0017] Fig. 2 This is a partial cross-sectional view of this application;

[0018] Fig. 3 This is a flow diagram of airflow in this application.

[0019] Among them, 1. First filter material; 2. Second filter material; 3. Plane A; 4. Support; 5. Through hole; 6. Partition line. Detailed Implementation

[0020] See Figs. 1-3 A filter paper includes a first filter material 1 and a second filter material 2. The front side of the first filter material 1 and the front side of the second filter material 2 are sealed together. The projection of the first filter material 1 onto plane A3 is wavy, and the projection of the second filter material 2 onto plane A is rectangular. The length line of the first filter material 1 is within plane A3, and plane A3 is perpendicular to the front side of the second filter material 2. The space formed by the first filter material 1 and the second filter material 2 is open at one end in a direction perpendicular to plane A3, and the other end is sealed together.

[0021] In this embodiment, during use, the airflow enters through the opening in the space formed by the first filter material 1 and the second filter material 2, such as... Fig. 3 The airflow enters from direction F3 and then exits from the back of the first filter material 1 (F1) or the back of the second filter material 2 (F2), thus filtering the airflow. After the airflow enters the space formed by the first filter material 1 and the second filter material 2, it impacts the sealing end of the space formed by the first filter material 1 and the second filter material 2. Because the space formed by the first filter material 1 and the second filter material 2 needs to have volume, the first filter material 1 is set to a wave shape. Therefore, if the top of the wave crest of the first filter material 1 is directly squeezed to the front of the second filter material 2 during sealing, it will cause creases or breakage on the first filter material 1. Therefore, a transitional sealing connection is adopted so that the sealing point has a certain transition, so that the top of the wave crest of the first filter material 1 is not suddenly squeezed to the front of the second filter material 2, thereby preventing creases or breakage.

[0022] Specifically, the distance between the side of the first filter material 1 facing away from the second filter material 2 and the end where the first filter material 1 and the second filter material 2 are sealed together decreases progressively. The direction of this progressive decrease is towards the closed end of the space formed by the first filter material 1 and the second filter material 2. The progressively decreasing distance between the second filter material 2 and the first filter material 1 is bonded together with adhesive. This method facilitates manufacturing, and the use of adhesive bonding reduces manufacturing costs.

[0023] As a preferred mode, the distance between the second filter material 2 and the first filter material 1 gradually decreases in the area of the gradual decrease, and the distance between the two adjacent adhesions is preset. In this way, the distance between the two adjacent adhesions is preset, which can reduce the use of glue, and at the same time can give the space of air flow buffer to prevent the first filter material 1 from being broken by the air flow; in theory, the more the number of adhesions in the area of the gradual decrease between the second filter material 2 and the first filter material 1, the better the buffering effect, and in order to balance the process and production cost, the preferred is three adhesions.

[0024] Preferably, a support 4 is provided in the area of the gradual decrease between the second filter material 2 and the first filter material 1, away from the closed connection end of the second filter material 2 and the first filter material 1, and the support 4 is closed connected with the first filter material 1 and the second filter material 2 by glue respectively. By setting the support 4, the extrusion amount of the first filter material 1 and the amount of glue used are reduced, and at the same time, the support 4 can play a supporting and reinforcing role for the wave type of the first filter material 2, improving the service life.

[0025] Preferably, the central part of the support 4 is provided with a through hole 5. The through hole 5 is provided to allow the air flow on both sides of the same support 4 to flow to each other, thereby giving the space of air flow buffer.

[0026] Preferably, the wave crest of the wave type formed by the projection of the first filter material 1 in the plane A3 is a symmetrical structure, and the symmetry axis is the vertical connection line segment from the vertex of the wave crest of the wave type to the front surface of the second filter material 2. In this way, the symmetrical structure meets the aesthetic requirements of the product market, and at the same time can better protect the wave type of the first filter material 1, and improve the space formed by the first filter material 1 and the second filter material 2.

[0027] Preferably, the second filter material 2 is provided with a partition line 6 parallel to the plane A3, and the distance from the partition line 6 to one end of the space closed connected by the first filter material 1 and the second filter material 2 is less than the distance from the partition line 6 to the opening end of the space formed by the first filter material 1 and the second filter material 2. In this way, the partition line 6 is set to facilitate workers to find the position of glue coating and support 4 installation during production.

Claims

1. A filter paper, characterized in that, Includes a first filter material (1) and a second filter material (2). The front side of the first filter material (1) is sealed to the front side of the second filter material (2). The projection of the first filter material (1) on plane A (3) is wavy. The projection of the second filter material (2) in plane A is rectangular. The length line of the first filter material (1) is in plane A (3). Plane A (3) is perpendicular to the front side of the second filter material (2). The space formed by the first filter material (1) and the second filter material (2) is open at one end in the direction perpendicular to plane A (3) and sealed at the other end. The distance between the first filter material (1) and the second filter material (2) at the sealed end and the side facing away from the second filter material (2) and the second filter material (2) gradually decreases. The direction of the gradual decrease is towards the closed end of the space formed by the first filter material (1) and the second filter material (2). The area where the distance between the second filter material (2) and the first filter material (1) gradually decreases is bonded by glue. Within the area where the distance between the second filter material (2) and the first filter material (1) decreases progressively, three bonding operations are performed, with a preset distance between two adjacent bonding operations; A support (4) is provided at the sealed connection end opposite to the second filter material (2) and the first filter material (1) in the area where the distance between the second filter material (2) and the first filter material (1) decreases step by step. The support (4) is sealed to the first filter material (1) and the second filter material (2) respectively by glue. The support (4) has a through hole (5) in the center; The wave crest of the first filter material (1) projected into the plane A (3) is a symmetrical structure, and its axis of symmetry is the vertical connecting line segment from the vertex of the wave crest to the front of the second filter material (2).

2. The filter paper according to claim 1, characterized in that, The second filter material (2) has a partition line (6) parallel to the plane A (3). The distance from the partition line (6) to one end of the space formed by the first filter material (1) and the second filter material (2) is less than the distance from the partition line (6) to the opening end of the space formed by the first filter material (1) and the second filter material (2).

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