Multilayer carbon fiber filter bag

Abstract

The utility model relates to the technical field of filter bags, and particularly discloses a multilayer carbon fiber filter bag which comprises a filter bag body, the filter bag body sequentially comprises a filter screen and an outer frame from inside to outside, the filter screen sequentially comprises a first filter screen and a second filter screen from top to bottom, the middle of the first filter screen is high, and the middle of the second filter screen is high. The two sides of the first filter screen are low, the middle of the second filter screen is low, the two sides of the second filter screen are high, the filtering position of the first filter screen is located on the peripheries of the two sides, and the filtering position of the second filter screen is located in the middle. A first compact carbon fiber layer is arranged in the middle of the first filter screen, second compact carbon fiber layers are arranged on the two sides of the second filter screen, a first filter material and a second filter material are arranged at the filter position of the first filter screen and the filter position of the second filter screen respectively, and the first filter material and the second filter material both comprise transverse fibers and longitudinal fibers. The transverse fibers and the longitudinal fibers are woven to respectively form a first filtering caliber and a second filtering caliber. The structure solves the problem of filtering misalignment at the filtering caliber position of the existing carbon fiber filter bag formed by the multi-layer carbon fiber cloth.

Description

Technical Field

[0001] This application relates to the field of filter bag technology, and specifically discloses a multi-layer carbon fiber filter bag. Background Technology

[0002] A filter bag is a filter element that intercepts particulate matter or impurities in a fluid through a bag-like structure. It is widely used in industrial, laboratory and daily life scenarios, ranging from 1μm to hundreds of micrometers. For example, 3M products cover an accuracy of 1-200μm.

[0003] Carbon fiber filter bags are a type of filter bag. They are high-efficiency filtration devices made of activated carbon fiber (ACF) or ordinary carbon fiber as the base material. They combine the dual functions of physical interception and chemical adsorption and are widely used in the fields of liquid and gas purification. Filtration accuracy: liquid filtration can be selected with an accuracy of 10μm, while gas filtration focuses on adsorption capacity.

[0004] Specifically, most traditional carbon fiber filter bags are multi-layered composite structures: the outer layer is a precision fiber filter material that intercepts large particulate impurities; the middle layer is activated carbon powder, which has an adsorption capacity far exceeding that of granular activated carbon for adsorbing organic matter and odors; and the inner layer is a dense fiber layer to prevent carbon powder leakage. The most crucial function of carbon fiber filter bags is that the activated carbon powder and the combined fiber filter material achieve a synergistic effect of "adsorption + filtration".

[0005] Currently, this model has been innovated. The current model is a filter bag made of multi-layer carbon fiber cloth. The carbon fiber cloth is composed of cellulose and activated carbon powder to form a fabric. Then, the filter opening is formed by weaving multiple layers of fabric, thereby achieving the synergistic effect of "adsorption + filtration".

[0006] The problem is that when in contact with liquid, the liquid may have potential energy and flow velocity impact. Because the carbon fiber cloth is woven to form the filter aperture, the strong impact force acting on the filter aperture cannot ensure the filtration accuracy of the filter aperture, because the filter aperture will be deformed under impact over a long period of time. In view of this, this application provides a multi-layer carbon fiber filter bag to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to solve the problem of inaccurate filtration at the filtration port of existing carbon fiber filter bags formed by multi-layer carbon fiber cloth.

[0008] To achieve the above objectives, this utility model provides the following basic solution:

[0009] A multi-layer carbon fiber filter bag includes a filter bag body. The filter bag body includes a filter screen and an outer frame from the inside to the outside. The filter screen includes a first filter screen and a second filter screen from top to bottom. The middle of the first filter screen is high and the two sides of the first filter screen are low. The middle of the second filter screen is low and the two sides of the second filter screen are high. The filtering position of the first filter screen is on the outer periphery of the two sides, and the filtering position of the second filter screen is in the middle.

[0010] The first filter screen has a first dense carbon fiber layer in the middle, and the second filter screen has a second dense carbon fiber layer on both sides. The first filter screen and the second filter screen are respectively provided with a first filter material and a second filter material at their respective filtration positions. Both the first filter material and the second filter material include horizontal fibers and vertical fibers. The horizontal fibers and vertical fibers are woven together to form a first filtration aperture and a second filtration aperture, respectively.

[0011] Furthermore, neither the first dense carbon fiber layer nor the second dense carbon fiber layer has any leakage points, and both the first dense carbon fiber layer and the second dense carbon fiber layer are multi-layer carbon fiber composite structures stacked one on top of the other.

[0012] Furthermore, a number of central rods are evenly distributed circumferentially along the center direction of the first filter screen in the outer ring layer of the first dense carbon fiber layer. A first mounting frame connected to the outer frame is provided outside the central rods. A number of annular rings are provided in the outer ring layer of the first filter screen. The annular rings and the central rods form a first mounting area. A support frame is installed in the first mounting area. The first filter material is installed on the support frame. Both the transverse and longitudinal fibers are fiber fabrics.

[0013] Furthermore, the central rod is made of polypropylene.

[0014] Furthermore, a second mounting frame connected to the outer frame is provided on the outside of the second dense carbon fiber layer. Several connecting rods are evenly distributed circumferentially along the center direction of the second filter screen in the inner ring layer of the second dense carbon fiber layer. The free ends of the connecting rods converge at the same point, and a second mounting area is formed between adjacent connecting rods. The second filter material is mounted on the second mounting area.

[0015] Furthermore, the connecting rod and the central rod are made of the same material, polypropylene.

[0016] The principle and effect of this solution are as follows:

[0017] 1. Compared with the existing technology, this structure is simple and ingenious. This device uses carbon fiber and filter media as raw materials for the filter bag. The filter diameter is formed by the combination of carbon fiber and filter media. This structure is a frame structure with an outer frame. Since the filter bag is usually used for liquid filtration, it needs to be installed on the liquid outflow pipe. The outer frame is set to cooperate with the hard contact of the liquid outflow pipe and ensure the installation stability of the filter bag body.

[0018] 2. Compared with existing technologies, this structure incorporates a first filter and a second filter. The first filter is higher in the middle and lower on both sides, while the second filter is lower in the middle and higher on both sides. The first filter is positioned at the outer periphery of both sides, and the second filter is positioned in the middle. The purpose of this design is to force the liquid to move towards both sides due to the higher middle position of the first filter, with the sides serving as the filtration positions. This design avoids liquid impact by using the middle position. The same principle applies to the second filter, which avoids liquid impact by using the sides. Since the sides are at higher positions, the liquid is forced to move towards the center, thus setting the middle position as the filtration position. By using the first and second filters, the problem of inaccurate particle interception caused by liquid impact in traditional fiber fabric filter bags is solved, ensuring that both layers have the same filtration effect to guarantee filtration accuracy. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A top view schematic diagram of a multilayer carbon fiber filter bag according to an embodiment of this application is shown;

[0021] Figure 2 This paper shows a front cross-sectional view of a multilayer carbon fiber filter bag according to an embodiment of this application;

[0022] Figure 3 This illustration shows a schematic diagram of the structure of the first filter screen in a multi-layer carbon fiber filter bag according to an embodiment of this application;

[0023] Figure 4 This paper shows a schematic diagram of the structure of the first filter material in a multilayer carbon fiber filter bag according to an embodiment of this application;

[0024] Figure 5 A schematic diagram of the structure of the second filter screen in a multi-layer carbon fiber filter bag according to an embodiment of this application is shown. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] The reference numerals in the accompanying drawings include: filter screen 1, outer frame 2, first filter screen 101, second filter screen 102, first dense carbon fiber layer 1011, center rod 1013, first mounting frame 1014, annular ring 1015, first mounting area 1016, support rod 1017, first filter material 1018, transverse fiber 1019, longitudinal fiber 1020, frame 1021, second dense carbon fiber layer 1022, second mounting frame 1023, connecting rod 1026, and second filter material 1027.

[0027] Implementation, for example Figures 1-5 As shown:

[0028] A multi-layer carbon fiber filter bag includes a filter bag body, which includes a filter screen 1 and an outer frame 2 from the inside to the outside. The filter screen 1 includes a first filter screen 101 and a second filter screen 102 from top to bottom. The first filter screen 101 is higher in the middle and lower on both sides. The second filter screen 102 is lower in the middle and higher on both sides. The filtering position of the first filter screen 101 is on the outer periphery on both sides, and the filtering position of the second filter screen 102 is in the middle.

[0029] The first filter screen 101 has a first dense carbon fiber layer 1011 in the middle, and the second filter screen 102 has a second dense carbon fiber layer 1022 on both sides. The first filter screen 101 and the second filter screen 102 are respectively provided with a first filter material 1018 and a second filter material 1027. The first filter material 1018 and the second filter material 1027 both include transverse fibers 1019 and longitudinal fibers 1020. The transverse fibers 1019 and the longitudinal fibers 1020 are woven to form a first filter aperture and a second filter aperture, respectively.

[0030] The core of this design is to mitigate liquid impact: the high center of the first filter 101 forces the liquid to move towards both sides, with the two sides serving as the filtration positions. This design avoids liquid impact by using the center position. The same principle applies to the second filter 102, which avoids liquid impact by using the two sides. Since these two sides are at a high point, the liquid is forced to move towards the center, thus setting the center position as the filtration position.

[0031] Specifically: neither the first dense carbon fiber layer 1011 nor the second dense carbon fiber layer 1022 has any leakage points. Both the first dense carbon fiber layer 1011 and the second dense carbon fiber layer 1022 are multi-layer carbon fiber composite structures stacked one on top of the other.

[0032] Because the first dense carbon fiber layer 1011 is the first liquid impact zone and the second liquid impact zone that bear the impact of the liquid, the first dense carbon fiber layer 1011 and the second dense carbon fiber layer 1022 are designed as a multi-layer carbon fiber composite structure, and the dense carbon fiber material is used to achieve liquid adsorption.

[0033] like Figures 3-5 As shown:

[0034] A plurality of central rods 1013 are evenly distributed circumferentially along the center direction of the first filter screen 101 in the outer ring layer of the first dense carbon fiber layer 1011. A first mounting frame 1014 connected to the outer frame 2 is provided outside the central rods 1013. A plurality of annular rings 1015 are provided in the outer ring layer of the first filter screen 101. The annular rings 1015 and the central rods 1013 form a first mounting area 1016. A support frame is installed in the first mounting area 1016. The first filter material 1018 is installed on the support frame. The transverse fibers 1019 and the longitudinal fibers 1020 are both fiber fabrics.

[0035] The support frame is fixed to the first mounting area 1016. The support frame has an "X" layout to improve its strength. Then, the first filter material 1018 is installed on the support frame. Regarding the first filter material 1018, as follows... Figure 4 As shown, the material used is fiber fabric weaving. Specifically, the outer part of the first filter material 1018 is a frame 1021. Then, based on the frame 1021, the horizontal fibers 1019 and the vertical fibers 1020 are woven by machine to form the first filter aperture. The first filter aperture is used to allow liquid to pass through, while solid particles smaller than the first filter aperture are blocked.

[0036] The center rod 1013 is made of polypropylene, which is resistant to chemical corrosion and has good sealing properties.

[0037] Similarly, a second mounting frame 1023 connected to the outer frame 2 is provided on the outside of the second dense carbon fiber layer 1022. Several connecting rods 1026 are evenly distributed circumferentially along the center direction of the second filter screen 102 in the inner ring layer of the second dense carbon fiber layer 1022. The connecting rods 1026 and the central rod 1013 are made of the same material, namely polypropylene. The free ends of the connecting rods 1026 converge at the same point, and a second mounting area is formed between adjacent connecting rods 1026. The second filter material 1027 is mounted on the second mounting area.

[0038] Similarly, the second filter material 1027 has the same structure as the first filter material 1018. It is formed by weaving horizontal fibers 1019 and vertical fibers 1020 by machine to form a second filter port. The second filter port has the same diameter as the first filter port. It is mainly used to enhance the filtration of liquids and ensure that no particulate impurities are missed. Likewise, the second filter port can be smaller than the first filter port. In order to enhance the filtration, the first filter port shares the filtration pressure of the second filter port. The second filter port and the first filter port can be reasonably selected according to the actual situation by selecting different first filter materials 1018 and second filter materials 1027.

[0039] This structure solves the problem of inaccurate filtration at the filtration port of existing carbon fiber filter bags formed by multi-layer carbon fiber cloth.

[0040] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A multi-layer carbon fiber filter bag, characterized in that, The filter bag includes a filter bag body, which includes a filter screen and an outer frame from the inside to the outside. The filter screen includes a first filter screen and a second filter screen from top to bottom. The middle of the first filter screen is higher and the two sides of the first filter screen are lower. The middle of the second filter screen is lower and the two sides of the second filter screen are higher. The filtering position of the first filter screen is on the outer periphery of the two sides, and the filtering position of the second filter screen is in the middle. The first filter screen has a first dense carbon fiber layer in the middle, and the second filter screen has a second dense carbon fiber layer on both sides. The first filter screen and the second filter screen are respectively provided with a first filter material and a second filter material at their respective filtration positions. Both the first filter material and the second filter material include horizontal fibers and vertical fibers. The horizontal fibers and vertical fibers are woven together to form a first filtration aperture and a second filtration aperture, respectively.

2. The multi-layer carbon fiber filter bag according to claim 1, characterized in that, Neither the first dense carbon fiber layer nor the second dense carbon fiber layer has any leakage points. Both the first dense carbon fiber layer and the second dense carbon fiber layer are multi-layer carbon fiber composite structures stacked one on top of the other.

3. The multi-layer carbon fiber filter bag according to claim 2, characterized in that, Several central rods are evenly distributed circumferentially along the center direction of the first filter screen in the outer ring layer of the first dense carbon fiber layer. A first mounting frame connected to the outer frame is provided outside the central rods. Several annular rings are provided in the outer ring layer of the first filter screen. The annular rings and the central rods form a first mounting area. A support frame is installed in the first mounting area. The first filter material is installed on the support frame. Both the transverse and longitudinal fibers are fiber fabrics.

4. A multi-layer carbon fiber filter bag according to claim 3, characterized in that, The center rod is made of polypropylene.

5. A multi-layer carbon fiber filter bag according to claim 3, characterized in that, A second mounting frame connected to the outer frame is provided on the outside of the second dense carbon fiber layer. Several connecting rods are evenly distributed circumferentially along the center direction of the second filter screen in the inner ring layer of the second dense carbon fiber layer. The free ends of the connecting rods converge at the same point, and a second mounting area is formed between adjacent connecting rods. The second filter material is mounted on the second mounting area.

6. A multi-layer carbon fiber filter bag according to claim 5, characterized in that, The connecting rod and the central rod are made of the same material, polypropylene.

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