Filter bag filtering device of bag filter

Abstract

The utility model discloses a filter bag filtering device of a bag type filter, which comprises a support basket and a filter bag sleeved in the support basket, a plurality of elastic connecting drawstrings are arranged on the outer surface of the filter bag, a plurality of positioning hooks in one-to-one correspondence with the elastic connecting drawstrings are arranged on the outer wall of the support basket, an extending opening is arranged below each positioning hook, and the elastic connecting drawstrings are arranged on the outer wall of the support basket. The elastic connecting drawstring can penetrate out of the extending opening and is wound on the positioning hook to be fixed; the filter bag comprises a hydrophobic nanofiber membrane layer, an electrostatic adsorption non-woven fabric layer and a biodegradable hydrophilic membrane layer which are sequentially arranged from inside to outside. The supporting basket is used as a supporting structure to prevent the filter bag from collapsing, fluid flows from the upper part to the lower part and is filtered by the filter bag in three layers, impurities with different particle sizes are fully intercepted in the bag, and clean liquid is discharged, so that the filtering precision is greatly improved, and the filtering effect is ensured; the filter bag and the support basket are matched through the elastic connecting drawstring and the positioning hook, so that the filter bag can be quickly mounted and dismounted, is not easy to fall off and is simple and convenient to maintain.

Description

Technical Field

[0001] This utility model relates to the field of bag filter technology, and in particular to a bag filter bag filtration device. Background Technology

[0002] Traditional bag filters typically consist of filter bags, support mesh, housing, inlet and outlet, etc. The filter bags are not securely installed and are prone to falling off. In use, the filter bags have a single filtration precision, and filter bags of different precision need to be replaced when processing different particle sizes, which affects the efficiency of operation. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a filter bag filtration device for a bag filter, which aims to solve the technical problems of easy bag detachment, single filtration accuracy, and reduced work efficiency in the prior art.

[0004] The technical solution of this utility model is: a filter bag filtration device for a bag filter, including a support basket and a filter bag fitted inside the support basket. The outer surface of the filter bag is provided with a plurality of elastic connecting straps. The outer wall of the support basket is provided with a plurality of positioning hooks corresponding to each of the elastic connecting straps. Each positioning hook has an extension opening below it. The elastic connecting straps can pass through the extension openings and be fixed around the positioning hooks. The filter bag includes a hydrophobic nanofiber membrane layer, an electrostatic adsorption nonwoven fabric layer, and a biodegradable hydrophilic membrane layer arranged sequentially from the inside to the outside.

[0005] Furthermore, in this utility model, several positioning hooks are arranged in multiple layers, with each layer having multiple hooks, and the multiple positioning hooks in each layer are evenly arranged around the center of the support basket.

[0006] Furthermore, in this utility model, the upper part of the positioning hook is bent inward and extends downward at an angle, and the elastic connecting strap is provided with a connecting hole, through which the positioning hook is inserted for fixation.

[0007] Furthermore, the hydrophobic nanofiber membrane layer described in this invention is a polytetrafluoroethylene membrane layer.

[0008] Furthermore, the biodegradable hydrophilic membrane layer described in this invention is a polylactic acid membrane layer.

[0009] Furthermore, the edges of the hydrophobic nanofiber membrane layer, the electrostatic adsorption nonwoven fabric layer, and the biodegradable hydrophilic membrane layer described in this invention are bonded together.

[0010] Furthermore, the inner wall of the top of the support basket in this invention is provided with an inwardly protruding support portion, which is used to cooperate with the clamping ring to press and fix the upper part of the filter bag.

[0011] Compared with the prior art, this utility model has the following advantages: This utility model uses a support basket as a support structure to prevent the filter bag from collapsing. The fluid flows from top to bottom. After three layers of filtration through the filter bag, impurities of different particle sizes are fully trapped in the bag, and the clean liquid is discharged, which greatly improves the filtration accuracy and ensures the filtration effect. The filter bag and the support basket are connected by an elastic connecting strap and a positioning hook, which can achieve quick installation and disassembly and are not easy to fall off. Maintenance is simple and convenient. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention;

[0014] Figure 3 for Figure 2 A magnified view of part A in the middle;

[0015] Figure 4 This is a schematic diagram of the specific structure of the filter bag described in this utility model.

[0016] The components include: 1. Support basket; 1a. Support section; 2. Filter bag; 2a. Hydrophobic nanofiber membrane layer; 2b. Electrostatic adsorption nonwoven fabric layer; 2c. Biodegradable hydrophilic membrane layer; 3. Elastic connecting strap; 4. Positioning hook; 5. Outlet. Detailed Implementation

[0017] The specific embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0018] Example:

[0019] The accompanying drawings illustrate a specific embodiment of the filter bag filtration device of this utility model, with reference to the attached figures. Figure 1 , Figure 2 It mainly includes a support basket 1, which is made of 304 stainless steel. The support basket 1 has several round holes, the diameter of which is larger than the pore diameter of the filter bag.

[0020] The support basket 1 is fitted with a filter bag 2, and the outer surface of the filter bag 2 is provided with several elastic connecting straps 3, which are made of rubber.

[0021] The outer wall of the support basket 1 is provided with a number of positioning hooks 4 corresponding to each elastic connecting strap 3. The number of positioning hooks 4 are arranged in three layers, with four in each layer. The four positioning hooks 4 in each layer are evenly arranged around the center of the support basket 1, which can ensure that the filter bag 2 is better fixed.

[0022] Combination Figure 3The lower part of the positioning hook 4 is L-shaped and plays a major role in fixing the bag. The upper part of the positioning hook 4 bends inward and extends downward at an angle to prevent it from falling out. Each positioning hook 4 has an extension opening 5 on the support basket 1 below it. The elastic connecting strap 3 can pass through the extension opening 5. The elastic connecting strap 3 has a connecting hole. By inserting the connecting hole into the positioning hook 4, the elastic connecting strap 3 can be wrapped around the positioning hook 4 for fixation, thereby achieving point fixation of the filter bag 2.

[0023] Combination Figure 4 In this embodiment, the filter bag 2 includes a hydrophobic nanofiber membrane layer 2a, an electrostatic adsorption nonwoven fabric layer 2b, and a biodegradable hydrophilic membrane layer 2c arranged sequentially from the inside out.

[0024] The filter bag 2 consists of a hydrophobic nanofiber membrane layer 2a, which is made of polytetrafluoroethylene (PTFE). Fluid first passes through this layer, intercepting large particles. It then flows through an electrostatic adsorption nonwoven fabric layer 2b, where micron-sized particles are captured. Finally, it passes through a biodegradable hydrophilic membrane layer 2c, which is made of polylactic acid (PLA), further filtering even smaller impurities. This three-layer filtration system effectively traps impurities of varying particle sizes within the bag, allowing clean liquid to drain, significantly improving filtration precision and ensuring optimal filtration results.

[0025] In this embodiment, the edges of the hydrophobic nanofiber membrane layer 2a, the electrostatic adsorption nonwoven fabric layer 2b, and the biodegradable hydrophilic membrane layer 2c are bonded together. The filter bag 2 is recyclable after use. The hydrophobic nanofiber membrane layer 2a can be regenerated by high-temperature melting. The electrostatic adsorption nonwoven fabric layer 2b can be reused through ultrasonic cleaning. The biodegradable hydrophilic membrane layer 2c can decompose after landfilling, demonstrating excellent environmental friendliness.

[0026] Furthermore, in this embodiment, the inner wall of the top of the support basket 1 is also provided with an inwardly protruding support portion 1a, such as... Figure 2 As shown, the support part 1a is used to cooperate with the clamping ring. By pressing the clamping ring onto the support part 1a, the upper part of the filter bag 2 can be further clamped and fixed.

[0027] In practical installation and use, this utility model simply involves placing the filter bag 2 inside the support basket 1, then aligning the elastic connecting strap 3 on the filter bag 2 with the protrusion 5 and threading it through. Next, pull the outer end of the elastic connecting strap 3 and align the connecting hole on the elastic connecting strap 3 with the positioning hook 4 to insert it, thus securing the elastic connecting strap 3 around the positioning hook 4. Due to the bent structure at the top of the positioning hook 4, the elastic connecting strap 3 can be effectively prevented from coming off. After the elastic connecting strap 3 is fully pulled out and secured, the filter bag 2 can be secured at multiple points. Finally, a clamping ring can be used to press it onto the support part 1a, further pressing and securing the upper part of the filter bag 2, thereby completing the complete fixation of the filter bag 2. When using the filtration device of this utility model, the fluid flows from top to bottom. After three layers of filtration through the filter bag 2, impurities of different particle sizes are fully trapped inside the bag, and clean liquid is discharged, greatly improving filtration accuracy and ensuring filtration effect.

[0028] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model, and their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit and essence of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A filter bag filtration device for a bag filter, characterized in that: The filter bag (2) includes a support basket (1) and a filter bag (2) fitted inside the support basket (1). The outer surface of the filter bag (2) is provided with several elastic connecting straps (3). The outer wall of the support basket (1) is provided with several positioning hooks (4) corresponding to each of the elastic connecting straps (3). Each positioning hook (4) has an extension opening (5) below it. The elastic connecting straps (3) can pass through the extension opening (5) and be fixed around the positioning hook (4). The filter bag (2) includes a hydrophobic nanofiber membrane layer (2a), an electrostatic adsorption nonwoven fabric layer (2b), and a biodegradable hydrophilic membrane layer (2c) arranged sequentially from the inside to the outside.

2. The filter bag filtration device for a bag filter according to claim 1, characterized in that: The positioning hooks (4) are arranged in multiple layers, with each layer having multiple hooks. The multiple positioning hooks (4) in each layer are evenly arranged around the center of the support basket (1).

3. The filter bag filtration device for a bag filter according to claim 1, characterized in that: The upper part of the positioning hook (4) is bent inward and extends downward at an angle. The elastic connecting strap (3) is provided with a connecting hole, and the connecting hole is inserted into the positioning hook (4) for fixation.

4. The filter bag filtration device for a bag filter according to claim 1, characterized in that: The hydrophobic nanofiber membrane (2a) is a polytetrafluoroethylene membrane.

5. The filter bag filtration device for a bag filter according to claim 1, characterized in that: The biodegradable hydrophilic membrane layer (2c) is a polylactic acid membrane layer.

6. The filter bag filtration device for a bag filter according to claim 1, characterized in that: The edges of the hydrophobic nanofiber membrane layer (2a), the electrostatic adsorption nonwoven fabric layer (2b), and the biodegradable hydrophilic membrane layer (2c) are bonded together.

7. The filter bag filtration device for a bag filter according to claim 1, characterized in that: The inner wall at the top of the support basket (1) is provided with an inwardly protruding support part (1a), which is used to cooperate with the pressing ring to press and fix the upper part of the filter bag (2).

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