Wear-resistant double-layer filter bag

Abstract

The utility model relates to the technical field of filter bags, and discloses a wear-resistant double-layer filter bag which comprises a steel frame, a filter screen is fixedly connected to the lower end of the steel frame, a wear-resistant assembly is arranged on the outer side of the filter screen and comprises a polytetrafluoroethylene coating arranged on the outer side of the filter screen, and a carbon fiber layer is arranged on the inner side of the filter screen. The polytetrafluoroethylene coating is pasted on the outer side of the filter screen in a wrapping mode, the polytetrafluoroethylene coating and the filter screen are assembled in a pasting mode, the carbon fiber layer is installed on the inner side of the filter screen, the carbon fiber layer and the filter screen are assembled in a sewing mode, one end of the steel frame is fixedly connected with a first clamping rod, and the other end of the steel frame is fixedly connected with a second clamping rod. The end, close to the first clamping rod, of the steel frame is fixedly connected with a second clamping rod, the outer sides of the first clamping rod and the second clamping rod are sleeved with aramid fiber layers, and the aramid fiber layers are arranged around the filter screen by a circle, so that the wear-resisting effect can be improved through the wear-resisting assembly when the filter screen is used, and quick assembly and disassembly can be achieved; and subsequent maintenance, replacement and cleaning are facilitated, so that the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of filter bag technology, specifically to a wear-resistant double-layer filter bag. Background Technology

[0002] A filter bag is a device composed of a filter screen and a steel frame, which can be used to filter gases or liquids as they flow. By intercepting solid particles carried in the gas or liquid, it achieves the effect of solid-liquid or solid-gas separation. A double-layer filter bag is a traditional single-layer filter bag with two layers, consisting of an inner layer and an outer layer. The inner layer intercepts large particles of impurities, while the outer layer intercepts small particles of impurities, resulting in a better filtration effect.

[0003] A search revealed Chinese patent application CN202321282244.4, which proposes a wear-resistant double-layer filter bag, relating to the field of filter bag technology. Its key technical features include: a connecting frame with an inner filter screen fixedly connected to it; a fixing buckle installed on the connecting frame; a connecting buckle installed on the inner filter screen; a buffer spring connected to the bottom of the inner filter screen; an outer protective net fixedly connected to the fixing buckle by bolts; the outer protective net being made of Cordura nylon; a connecting groove corresponding to the connecting buckle connected to the inner side of the outer protective net; and a flexible protective sleeve sewn to the bottom of the outer protective net. In the aforementioned prior art, a protective sleeve is installed on the outside of the double-layer filter bag, and the protective sleeve is quickly installed and removed using a pin-locking mechanism, thereby improving wear resistance.

[0004] In the aforementioned prior art, the flexible protective sleeve is installed by fitting an inner clamp onto a slot on the outer side of the filter screen. This installation method involves fitting the entire flexible protective sleeve over the filter screen during assembly. During this process, the positions of multiple clamps need to be adjusted to align with the slots. Furthermore, because the clamps and slots need to be engaged, and the space between the flexible protective sleeve and the filter screen is relatively small, the view can be easily obstructed, leading to inconvenience in installation. Utility Model Content

[0005] The purpose of this utility model is to provide a wear-resistant double-layer filter bag, which solves the problem that the outer protective wear-resistant device is inconvenient to assemble with the filter screen during the assembly of double-layer filter screens in the prior art.

[0006] This utility model provides the following technical solution: a wear-resistant double-layer filter bag, including a steel frame, a filter screen is fixedly connected to the lower end of the steel frame, and a wear-resistant component is provided on the outer side of the filter screen. The wear-resistant component includes a polytetrafluoroethylene coating on the outer side of the filter screen and a carbon fiber layer on the inner side of the filter screen.

[0007] The above technical solution utilizes a polytetrafluoroethylene coating to protect the outer side of the filter screen and a carbon fiber layer to protect the inner side of the filter screen.

[0008] As a preferred embodiment of the above technical solution, the polytetrafluoroethylene coating is wrapped and pasted onto the outside of the filter screen, and the polytetrafluoroethylene coating and the filter screen are assembled by pasting.

[0009] As a preferred embodiment of the above technical solution, the carbon fiber layer is installed inside the filter screen, and the carbon fiber layer is assembled with the filter screen by stitching.

[0010] As a preferred embodiment of the above technical solution, a first clamping rod is fixedly connected to one end of the steel frame, and a second clamping rod is fixedly connected to the end of the steel frame near the first clamping rod.

[0011] The above technical solution uses a first and a second clamp to position and restrict one end of the aramid fiber layer.

[0012] As a preferred embodiment of the above technical solution, an aramid fiber layer is sleeved on the outer side of the first and second clamps, and the aramid fiber layer surrounds the filter screen. An insert rod is inserted into the end of the steel frame away from the first and second clamps, and the end of the insert rod away from the steel frame passes through the filter screen and is fixedly connected to the aramid fiber layer.

[0013] The above technical solution uses a plug to lock and restrict the other end of the aramid fiber layer.

[0014] As a preferred embodiment of the above technical solution, the aramid fiber layer has multiple sets of holes and grooves inside, and the holes and grooves are configured in a rhomboid shape.

[0015] The above technical solution allows the filtered gas or liquid to flow smoothly through multiple sets of perforations.

[0016] As a preferred embodiment of the above technical solution, a connecting strap is fixedly connected to one end of the aramid fiber layer, and a hook and loop fastener is fixedly connected to one side of the connecting strap. A hook and loop fastener is attached to the side of the hook and loop fastener away from the connecting strap, and the end of the hook and loop fastener away from the hook and loop fastener is fixedly connected to the other end of the aramid fiber layer.

[0017] The above technical solution fixes the aramid fiber layer by bonding the hook and loop fasteners together.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] This wear-resistant double-layer filter bag can improve the wear resistance of the filter screen through wear-resistant components, and can also be quickly assembled and disassembled, which facilitates subsequent maintenance, replacement and cleaning, thereby improving the convenience of use. Attached Figure Description

[0020] Figure 1A first-view three-dimensional structural diagram of a wear-resistant double-layer filter bag;

[0021] Figure 2 A second-view three-dimensional structural diagram of a wear-resistant double-layer filter bag;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of a wear-resistant double-layer filter bag;

[0023] Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 5 for Figure 2 Enlarged schematic diagram of the structure at point B;

[0025] Figure 6 This is a magnified schematic diagram of a partial structure at the insertion rod of a wear-resistant double-layer filter bag.

[0026] In the diagram: 1. Steel frame; 11. Filter screen; 2. Wear-resistant component; 21. PTFE coating; 22. Carbon fiber layer; 23. First clamping rod; 24. Second clamping rod; 25. Aramid fiber layer; 26. Groove; 27. Connecting strap; 28. Velcro adhesive surface; 29. ​​Velcro adhesive surface; 210. Insert rod. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0028] like Figure 1 - Figure 6 As shown, this utility model provides a technical solution: a wear-resistant double-layer filter bag, including a steel frame 1, a filter screen 11 fixedly connected to the lower end of the steel frame 1, and a wear-resistant component 2 provided on the outer side of the filter screen 11. The wear-resistant component 2 includes a polytetrafluoroethylene coating 21 on the outer side of the filter screen 11 and a carbon fiber layer 22 on the inner side of the filter screen 11. The wear-resistant component 2 can improve the wear resistance of the filter screen 11 during use, and can also achieve quick assembly and disassembly, thereby facilitating subsequent maintenance, replacement and cleaning, and improving the convenience of use.

[0029] like Figure 4 As shown, the polytetrafluoroethylene coating 21 is wrapped and pasted on the outside of the filter screen 11, and the polytetrafluoroethylene coating 21 and the filter screen 11 are assembled by pasting, so as to protect the outside of the filter screen 11.

[0030] like Figure 4 As shown, the carbon fiber layer 22 is installed on the inner side of the filter screen 11, and the carbon fiber layer 22 is assembled with the filter screen 11 by stitching, thereby protecting the inner side of the filter screen 11.

[0031] like Figure 1 As shown, a first clamping rod 23 is fixedly connected to one end of the steel frame 1, and a second clamping rod 24 is fixedly connected to the end of the steel frame 1 near the first clamping rod 23. The two ends of the aramid fiber layer 25 are clamped by the first clamping rod 23 and the second clamping rod 24.

[0032] like Figure 6 As shown, an aramid fiber layer 25 is sleeved on the outer side of the first clamping rod 23 and the second clamping rod 24, and the aramid fiber layer 25 is arranged around the filter screen 11. An insert rod 210 is inserted into the end of the steel frame 1 away from the first clamping rod 23 and the second clamping rod 24, and the end of the insert rod 210 away from the steel frame 1 passes through the filter screen 11 and is fixedly connected to the aramid fiber layer 25. The aramid fiber layer 25 is sequentially sleeved on the outer side of the first clamping rod 23 and the second clamping rod 24 for locking and limiting. While the aramid fiber layer 25 is wrapped around the outer side of the filter screen 11, it drives the insert rod 210 to be inserted into the filter screen 11 and the steel frame 1 for locking.

[0033] like Figure 1 As shown, the aramid fiber layer 25 has multiple sets of holes and grooves 26 inside, and the holes and grooves 26 are set in a rhombus shape. The gas or liquid filtered by the filter screen 11 can flow smoothly through the multiple sets of holes and grooves 26 on the aramid fiber layer 25.

[0034] like Figure 5 As shown, a connecting strap 27 is fixedly connected to one end of the aramid fiber layer 25, and a hook and loop fastener 28 is fixedly connected to one side of the connecting strap 27. A hook and loop fastener 29 is attached to the side of the hook and loop fastener 28 away from the connecting strap 27, and the end of the hook and loop fastener 29 away from the hook and loop fastener 28 is fixedly connected to the other end of the aramid fiber layer 25. The connecting strap 27 drives the hook and loop fastener 28 and the hook and loop fastener 29 to adhere together, thereby fixing both ends of the aramid fiber layer 25 by the adhesion of the hook and loop fastener 28 and the hook and loop fastener 29.

[0035] Working principle: When assembling the steel frame 1 and the aramid fiber layer 25, first, the end of the aramid fiber layer 25 closest to the hook and loop fastener 29 is fitted onto the outside of the first locking rod 23. Then, the aramid fiber layer 25 is wrapped around the filter screen 11. During the wrapping process, the insertion rod 210 is inserted into the filter screen 11 and the steel frame 1. Then, the end of the aramid fiber layer 25 carrying the connecting strap 27 and the hook and loop fastener 28 is attached to the hook and loop fastener 29. The hook and loop fastener 28 and the hook and loop fastener 29 are used to attach the aramid fiber layer... After installation, the outer side of the filter screen 11 is protected by the aramid fiber layer 25 and the polytetrafluoroethylene coating 21 to improve the wear resistance of the filter screen 11. The inner side of the filter screen 11 is protected by the carbon fiber layer 22. When removing the filter screen 11, pull the connecting strap 27 to separate the hook and loop fastener 28 and the hook and loop fastener 29. Then pull the aramid fiber layer 25 to pull out the filter screen 11 by the insertion rod 210 and separate the aramid fiber layer 25 from the first locking rod 23 and the second locking rod 24.

[0036] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A wear-resistant double-layer filter bag, comprising a steel frame (1), characterized in that: The lower end of the steel frame (1) is fixedly connected to a filter screen (11), and a wear-resistant component (2) is provided on the outside of the filter screen (11). The wear-resistant component (2) includes a polytetrafluoroethylene coating (21) on the outside of the filter screen (11) and a carbon fiber layer (22) on the inside of the filter screen (11).

2. The wear-resistant double-layer filter bag according to claim 1, characterized in that: The polytetrafluoroethylene coating (21) is wrapped and pasted on the outside of the filter screen (11), and the polytetrafluoroethylene coating (21) and the filter screen (11) are assembled by pasting.

3. The wear-resistant double-layer filter bag according to claim 1, characterized in that: The carbon fiber layer (22) is installed inside the filter screen (11), and the carbon fiber layer (22) is assembled with the filter screen (11) by stitching.

4. The wear-resistant double-layer filter bag according to claim 1, characterized in that: One end of the steel frame (1) is fixedly connected to a first clamping rod (23), and the end of the steel frame (1) near the first clamping rod (23) is fixedly connected to a second clamping rod (24).

5. The wear-resistant double-layer filter bag according to claim 4, characterized in that: The first clamp (23) and the second clamp (24) are fitted with an aramid fiber layer (25) on their outer sides, and the aramid fiber layer (25) surrounds the filter screen (11) in a circle. The steel frame (1) is fitted with a plug (210) at one end away from the first clamp (23) and the second clamp (24), and the plug (210) at one end away from the steel frame (1) passes through the filter screen (11) and is fixedly connected to the aramid fiber layer (25).

6. The wear-resistant double-layer filter bag according to claim 5, characterized in that: The aramid fiber layer (25) has multiple sets of holes (26) inside, and the holes (26) are set in a rhombus shape.

7. The wear-resistant double-layer filter bag according to claim 6, characterized in that: One end of the aramid fiber layer (25) is fixedly connected to a connecting strap (27), and a hook and loop fastener (28) is fixedly connected to one side of the connecting strap (27). A hook and loop fastener (29) is attached to the side of the hook and loop fastener (28) away from the connecting strap (27), and the end of the hook and loop fastener (29) away from the hook and loop fastener (28) is fixedly connected to the other end of the aramid fiber layer (25).

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