Filter bag capable of filtering fine particles

Abstract

The utility model discloses a filter bag capable of filtering fine particulate matters, and particularly relates to the technical field of filter bags, the filter bag comprises a bag body, the bag body is composed of a sealing belt, a middle coarse filter bag and a bottom fine filter bag, when the filter bag works, fluid containing fine particulate matters firstly passes through the middle coarse filter bag to intercept larger impurities, the fluid subjected to preliminary filtration then flows into the bottom fine filter bag, and the bag body is sealed by the sealing belt. An exquisite control assembly is arranged at an opening of the bag body, one end of a binding belt is connected with the bag body, the other end of the binding belt leads to a mounting cylinder fixed to the bag body, and two ends of a coil spring are fixed to a cylinder wall and a rotating roller respectively. The connecting seat at the end part of the binding belt penetrates through the cylinder wall and is communicated with the window to enter the connecting groove, the connecting seat is in sliding fit with the groove wall, and the handle is pulled to drive the rotating seat to twist the coil spring, so that the connecting groove is aligned with the communicated window, the connecting seat is fixed, the coil spring is released, and the binding belt is tightened and sealed. The overall sealing performance is better, and leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of filter bag technology, specifically a filter bag that can filter fine particulate matter. Background Technology

[0002] Filter bags are commonly used in general industrial filtration, such as air filtration and water filtration.

[0003] Many traditional filter bags are effective at filtering larger particles, but their filtration capacity is limited for micron-sized or even smaller particles, such as PM2.5, failing to meet the demands for high-precision filtration of air or liquids. For example, in some electronic chip manufacturing workshops with extremely high air quality requirements, ordinary filter bags struggle to remove enough fine dust particles, potentially affecting chip production quality. Furthermore, common bag structures often feature a rope around the bag opening to secure the bag or connect it to filtration equipment. However, in practice, gaps may remain after the rope is tightened, making a complete seal difficult. During filtration, a small amount of unfiltered material may leak through these gaps, affecting the filtration effect.

[0004] During the filtration process, especially in liquid filtration or air filtration under certain pressure, the ropes may loosen due to pressure and other factors, causing the filter bag to fall off or shift, affecting the normal operation of the filtration system. To address this issue, we propose a filter bag that can filter fine particulate matter. Utility Model Content

[0005] The present invention aims to solve the technical problem that filter bags in the prior art are prone to loosening when filtering liquids or air under certain pressure.

[0006] Therefore, the technical solution adopted by this utility model is as follows:

[0007] A filter bag for filtering fine particulate matter includes a bag body, a sealed top section, a coarse filter bag in the middle section, and a fine filter bag at the bottom. The sealed section and the coarse filter bag are fixedly connected, as are the coarse and fine filter bags. A control component is provided at the opening of the bag body. The control component includes an assembly belt, the inner wall of which is fixedly connected to the bag body. A restraining strap is built into the assembly belt, and an installation cylinder is provided at one end of the restraining strap. One side of the installation cylinder is fixedly connected to the bag body, and a rotating roller is built into the installation cylinder. One end of the rotating roller is rotatably connected to the bottom of the inner cavity of the installation cylinder, and a sleeve is attached to one end of the rotating roller. A coil spring is provided, with one end fixedly connected to the inner wall of the mounting cylinder and the other end fixedly connected to a rotating roller. A rotating seat is sleeved in the middle of the rotating roller, with one end fixedly connected to the rotating roller and the other end having a connecting groove. A connecting seat is fixedly connected to the end of the binding strap near the mounting cylinder. A limiting groove is provided on the top of the connecting seat, and a limiting hole is provided at one end of the rotating seat. A magnetic seat is built into the limiting hole, and the magnetic seat is slidably connected to the hole wall and the groove wall of the limiting groove. A communicating window is provided on the surface of the mounting cylinder, and the connecting seat extends through the communicating window into the connecting groove, where it is slidably connected to the groove wall.

[0008] Preferably, one end of the restraint strap is fixedly connected to the bag body.

[0009] Preferably, a sealing ring is fixedly connected to the inner wall of the bag opening.

[0010] Preferably, the rotating roller coincides with the axis of the mounting cylinder.

[0011] Preferably, a handle is fixedly connected to the end of the rotating seat away from the coil spring.

[0012] Preferably, the bottom of the magnetic base has an elliptical structure.

[0013] Preferably, the coil spring is placed inside the mounting cylinder.

[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0015] The filter bag of this invention, which can filter fine particulate matter, consists of a top sealed belt, a middle coarse filter bag, and a bottom fine filter bag. During operation, the fluid containing fine particulate matter first passes through the middle coarse filter bag to intercept larger impurities, and the pre-filtered fluid then flows into the bottom fine filter bag, achieving multi-layer fine filtration. Compared with a single-layer filter bag, this significantly improves the filtration efficiency for fine particulate matter.

[0016] A sophisticated control assembly is located at the bag opening. Based on an assembly strap, it incorporates a built-in restraint strap, and a sealing ring on the inner wall of the bag opening enhances the seal. One end of the restraint strap is connected to the bag body, and the other end leads to a mounting cylinder fixed to the bag body. Inside the mounting cylinder is a rotating roller aligned with the cylinder's axis. One end of the roller is rotatably connected to the bottom of the cylinder and fitted with a coil spring. The two ends of the coil spring are fixed to the cylinder wall and the rotating roller, respectively. A rotating seat in the middle of the rotating roller is fixedly connected to the roller body at one end, and has a connecting groove at the other end. The connecting seat at the end of the restraint strap passes through the connecting window in the cylinder wall and enters the connecting groove. The connecting seat slides against the groove wall, and a top limiting groove works in conjunction with an elliptical magnetic seat in the limiting hole of the rotating seat to facilitate the connecting seat's entry and fixation. Pulling the handle causes the rotating seat to twist the coil spring, aligning the connecting groove with the connecting window, and the connecting seat is fixed. Releasing the handle releases the coil spring, tightening the restraint strap for a seal. Compared to traditional pull-cord fixing, this control assembly provides better sealing, effectively preventing leakage and ensuring the stability and reliability of the filtration system. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the overall internal structure of this utility model.

[0019] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Figure 4 This is a schematic diagram of the control component structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the assembly structure of the rotating roller and the binding belt of this utility model.

[0022] In the diagram: 1. Bag body; 101. Sealing belt; 102. Coarse filter bag; 103. Fine filter bag; 2. Control components; 201. Assembly belt; 202. Sealing ring; 203. Restraint belt; 204. Mounting cylinder; 205. Connecting window; 206. Rotating roller; 207. Coil spring; 208. Rotating seat; 209. Connecting groove; 210. Connecting seat; 211. Limiting groove; 212. Limiting hole; 213. Magnetic seat; 214. Handle. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example: Figures 1-5 As shown, this utility model provides a filter bag for filtering fine particulate matter, including a bag body 1, a sealed belt 101 at the top of the bag body 1, a coarse filter bag 102 in the middle of the bag body 1, and a fine filter bag 103 at the bottom of the bag body 1. When gas or liquid containing fine particulate matter enters the filter bag, it first passes through the coarse filter bag 102 in the middle of the bag body 1, which can intercept larger particles of impurities. Then, the fluid that has undergone preliminary filtration continues to flow downward and enters the fine filter bag 103 at the bottom of the bag body 1, where the fine filter bag 103 further filters the fine particulate matter, thereby achieving multi-layer filtration and improving the filtration effect.

[0025] Furthermore, a control component 2 is provided at the opening of the bag body 1. The control component 2 includes an assembly belt 201, the inner ring wall of which is fixedly connected to the bag body 1. A restraint belt 203 is built into the assembly belt 201. A sealing ring 202 is fixedly connected to the inner wall of the opening of the bag body 1. One end of the restraint belt 203 is fixedly connected to the bag body 1, and the other end of the restraint belt 203 is provided with an installation cylinder 204. One side of the installation cylinder 204 is fixedly connected to the bag body 1, and a communication window 205 is opened on the surface of the installation cylinder 204. The mounting cylinder 204 contains a rotating roller 206, whose axis coincides with that of the mounting cylinder 204. One end of the rotating roller 206 is rotatably connected to the bottom of the inner cavity of the mounting cylinder 204. A coil spring 207 is sleeved on one end of the rotating roller 206 and is placed inside the mounting cylinder 204. One end of the coil spring 207 is fixedly connected to the inner wall of the mounting cylinder 204, and the other end of the coil spring 207 is fixedly connected to the rotating roller 206. A rotating seat 208 is sleeved in the middle of the rotating roller 206, and one end of the rotating seat 208 is connected to the rotating roller 206. 06. Fixed connection: A connecting groove 209 is provided at the other end of the rotating seat 208. A connecting seat 210 is fixedly connected to one end of the restraint strap 203 near the mounting cylinder 204. The connecting seat 210 extends through the communicating window 205 into the connecting groove 209. The connecting seat 210 is slidably connected to the groove wall of the connecting groove 209. A limiting groove 211 is provided at the top of the connecting seat 210. A limiting hole 212 is provided at one end of the rotating seat 208. A magnetic seat 213 is built into the limiting hole 212. The bottom of the magnetic seat 213 is elliptical. The magnetic base 213 is slidably connected to the wall of the limiting hole 212 and the wall of the limiting groove 211. A handle 214 is fixedly connected to the end of the rotating base 208 away from the coil spring 207. Pulling the handle 214 causes the rotating base 208 to rotate. Since one end of the coil spring 207 is fixedly connected to the inner wall of the mounting cylinder 204 and the other end is fixedly connected to the rotating roller 206, the rotating roller 206 will twist the coil spring 207 as the rotating base 208 rotates, allowing the coil spring 207 to store elastic potential energy. During the rotation of the rotating base 208, the connecting groove 209 gradually rotates to the position of the connecting window 205. At this time, the connecting base 210 can enter the connecting groove 209 from the connecting window 205. Because the bottom of the magnetic base 213 has an elliptical structure, the elliptical bottom facilitates the smooth entry of the connecting base 210 into the connecting groove 209. When the connecting seat 210 is fully inserted into the connecting groove 209, the magnetic seat 213 will attract the connecting seat 210 and fix it in the connecting groove 209. At this time, the binding strap 203 is in a relaxed state, and the filter bag opening is open. When closing the filter bag opening, release the handle 214, the coil spring 207 releases its elastic potential energy, driving the rotating seat 208 to rotate in the opposite direction. As the rotating seat 208 rotates, the connecting seat 210 gradually moves away from the communicating window 205, and the binding strap 203 gradually tightens, thereby binding and sealing the opening of the bag body 1.

[0026] The bag body 1 is divided into a top sealed belt 101, a middle coarse filter bag 102 and a bottom fine filter bag 103. This multi-layer structure design can filter particles of different sizes step by step. Compared with a single-layer filter bag, it greatly improves the overall filtration effect and can remove fine particles more effectively.

[0027] Compared to traditional pull-cord fixing methods, this filter bag control assembly 2 uses a connecting seat 210 to engage with a connecting groove 209, ensuring that its restraint strap 203 remains secure during daily use. Combined with the sealing ring 202, this sealing method better guarantees the seal at the filter bag opening. Traditional pull-cord fixing may have gaps, leading to leakage of unfiltered materials, while this design effectively avoids this problem, improving the stability and reliability of the filtration system.

[0028] Working principle: In terms of the filtration process, when gas or liquid containing fine particulate matter comes into contact with the filter bag, it first flows into the coarse filter bag 102 in the middle. Due to its structural characteristics, it intercepts larger particles of impurities. After the initial screening, the fluid flows downward to the fine filter bag 103 at the bottom. The fine filter bag 103, with its dense material structure, further captures fine particulate matter. Through this layer-by-layer progressive method, efficient filtration of particles of different sizes is achieved, greatly improving the overall filtration effect compared to a single-layer filter bag.

[0029] In operation of control component 2, when opening the filter bag opening, pull handle 214, which drives the connected rotating seat 208 to rotate. Since the rotating seat 208 is fixed in the middle of the rotating roller 206, and one end of the rotating roller 206 is rotatably connected to the bottom of the inner cavity of the mounting cylinder 204 and sleeved with a coil spring 207, with both ends of the coil spring 207 fixed to the inner wall of the mounting cylinder 204 and the rotating roller 206 respectively, the rotation of the rotating seat 208 will cause the rotating roller 206 to twist the coil spring 207, allowing the coil spring 207 to store elastic potential energy. During the rotation of the rotating seat 208, its connecting groove 209 gradually aligns with the communicating window 205 on the surface of the mounting cylinder 204. At this time, the binding strap 203, near the connecting seat 210 at one end of the mounting cylinder 204, can smoothly pass through the communicating window 205 and enter the connecting groove 209 with the guidance of the elliptical structure at the bottom of the magnetic seat 213. The magnetic seat 213 cooperates with the limiting groove 211 on the connecting seat 210 to firmly fix the connecting seat 210, causing the binding strap 203 to loosen and the filter bag opening to open. When closing the filter bag opening, the handle 214 is released, and the coil spring 207 releases the previously stored elastic potential energy, driving the rotating seat 208 to rotate in the opposite direction. The binding strap 203 then gradually tightens, cooperating with the sealing ring 202 on the inner wall of the bag body 1 opening to tightly bind and seal the bag body 1 opening, effectively preventing leakage and ensuring the stable operation of the filtration system. Compared with the traditional pull rope fixing method, this design has better sealing and tightness.

[0030] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A filter bag capable of filtering fine particulate matter, characterized by, The utility model relates to a bag body (1), the bag body (1) top is closed zone (101), the bag body (1) middle part is rough filter bag (102), the bag body (1) bottom is fine filter bag (103), closed zone (101) and rough filter bag (102) fixed connection, rough filter bag (102) and fine filter bag (103) fixed connection, the bag body (1) opening is provided with control assembly (2), control assembly (2) includes assembly zone (201), the assembly zone (201) inner ring wall is fixedly connected with bag body (1), the assembly zone (201) is built in and is tied with the band (203), the tied with the band (203) one end is provided with installation cylinder (204), installation cylinder (204) one side is fixedly connected with bag body (1), installation cylinder (204) is built in and is rotated the roller (206), rotated the roller (206) one end with installation cylinder (204) inner chamber bottom rotationally connected, rotated the roller (206) one end is sleeved with volute spring (207), volute spring (207) one end is fixedly connected with installation cylinder (204) inner wall, volute spring (207) other end is fixedly connected with rotated the roller (206), rotated the roller (206) middle part is sleeved with rotating seat (208), rotating seat (208) one end is fixedly connected with rotated the roller (206), rotating seat (208) other end is set up with connecting groove (209), the tied with the band (203) one end close to installation cylinder (204) is fixedly connected with connecting seat (210), connecting seat (210) top is set up with limiting slot (211), rotating seat (208) one end is set up with limiting hole (212), limiting hole (212) is built in with magnetic base (213), magnetic base (213) with limiting hole (212) hole wall and limiting slot (211) slot wall sliding connection, installation cylinder (204) surface is set up with intercommunication window (205), connecting seat (210) passes through intercommunication window (205) and extends to connecting groove (209) in, connecting seat (210) with connecting groove (209) slot wall sliding connection.

2. The filter bag of claim 1, wherein, The tied with the band (203) one end is fixedly connected with the bag body (1).

3. The filter bag of claim 1, wherein, The bag body (1) opening inner wall is fixedly connected with the sealing ring (202).

4. The filter bag of claim 1, wherein, The rotating roller (206) coincides with the axis of the installation cylinder (204).

5. The filter bag of claim 1, wherein, The rotating seat (208) is fixedly connected with the handle (214) away from the volute spring (207).

6. The filter bag of claim 1, wherein, The magnetic base (213) bottom is an elliptical structure.

7. The filter bag of claim 1, wherein, The volute spring (207) is placed in the installation cylinder (204).

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