Function coupling type filter bag and preparation process

Abstract

The functional coupling type filter bag comprises a bag type filter body and a sealing cover on the top, a filter bag and a framework which are matched with each other are installed in an inner cavity of the bag type filter body, the filter bag is in a straight cylinder shape, a lower buckling belt is arranged at the bottom of the filter bag, and air holes are formed in a bottom ring of the bottom of the framework; a lower ring disc is fixedly connected to the inner wall of the bag filter main body, the inner diameter of the lower ring disc is matched with the outer diameter of the filter bag, and the framework is mounted in an inner cavity of the bag filter main body, and the bottom ring and the lower ring disc are positioned on the same horizontal plane; a lower ring disc is arranged below the lower ring disc; the side wall of the bag type filter main body is communicated and connected with an impurity discharge pipe lower than the air outlet pipe, and the lower ring disc is positioned between the air outlet pipe and the impurity discharge pipe. Self-cleaning of the filter bag can be achieved, the whole process does not need mounting and dismounting of the filter bag, operation is easy, convenient and rapid, and time and labor are saved.

Description

Technical Field

[0001] The invention belongs to the technical field of filter bags, and in particular relates to a functional coupling filter bag and a preparation process thereof. Background Art

[0002] Filter bags are a type of equipment used to filter solid particles, pollutants and dust from air or liquids. They are widely used in industries, environmental protection, HVAC systems, etc. Filter bags are usually made of multiple layers of different materials and have good filtering performance and durability.

[0003] In the field of industrial dust removal, filter bags are often used for dust control in factories and production lines. Due to the large gas output of the factory, the filter bags need to be cleaned frequently to ensure the filtering effect; however, in the existing technology, the filter bags need to be taken out and cleaned separately, and then reinstalled after cleaning; such high-frequency operation is very time-consuming and labor-intensive. Therefore, there is an urgent need for a coupled filter bag that can be automatically cleaned without disassembly. Summary of the invention

[0004] The present invention aims at solving the problems in the prior art and proposes the following technical solutions: A functional coupling filter bag, comprising a bag filter body and a sealing cover on the top, the side wall of the bag filter body is interconnected with an air inlet pipe and an air outlet pipe, and the air inlet pipe is located above the air outlet pipe, and a matching filter bag and a frame are installed in the inner cavity of the bag filter body, the filter bag is straight and has a lower buckle belt at the bottom, and the bottom ring of the frame is provided with air holes; The inner wall of the bag filter body is fixedly connected with a lower ring disk, and the inner diameter of the lower ring disk is adapted to the outer diameter of the filter bag. The bottom ring and the lower ring disk are located on the same horizontal plane after the skeleton is installed in the inner cavity of the bag filter body; the lower ring disk is provided below; the side wall of the bag filter body is interconnected with a discharge pipe lower than the air outlet pipe, and the height of the lower ring disk is located between the air outlet pipe and the discharge pipe; When filtering, the filter bag rests against the bottom of the bottom ring, and the gas enters the filter bag from the air inlet pipe for filtration and is discharged from the air outlet pipe after being filtered by the filter bag; when cleaning the filter bag, it descends, and the gas enters the filter bag from the air inlet pipe and carries the dust in the inner cavity of the filter bag and is discharged through the bottom opening of the filter bag, the air vents, and the exhaust pipe.

[0005] As a preferred embodiment of the above technical solution, a valve is installed on the air outlet pipe.

[0006] As a preferred embodiment of the above technical solution, a stud is inserted into the bottom of the bag filter body through a thread, and the top and bottom of the stud are rotatably connected.

[0007] As a preferred embodiment of the above technical solution, a foot is fixedly connected to the bottom outer wall of the bag filter body, and the height of the bag filter body lifted by the foot is greater than the length of the stud.

[0008] As a preferred embodiment of the above technical solution, an upper ring disk is fixedly connected to the inner wall of the bag filter body, and the inner diameter of the upper ring disk is matched with the outer diameter of the filter bag; A limiting step is provided on the top of the upper ring disc, an upper edge ring is provided on the top of the filter bag, and the upper edge ring is matched with the limiting step.

[0009] As a preferred embodiment of the above technical solution, the skeleton also includes a top ring, and a plurality of support rods are fixedly connected between the top ring and the sealing cover, and the plurality of support rods surround the circle that is adapted to the inner diameter of the filter bag; the top ring is fixed to the upper ring plate by bolts.

[0010] As a preferred embodiment of the above technical solution, a pressure gauge is installed on the sealing cover.

[0011] A filter bag preparation process is applied to the above-mentioned filter bag, and the filter bag preparation process comprises the following steps: S1. Material selection and preparation: The filter material is polypropylene among synthetic fibers, and the selected filter material is pre-treated, including cleaning, drying, etc., to ensure its stable performance in subsequent processing; S2. Filter material processing: The filter material is processed into filter cloth by air-laid process; then it is coated with waterproof agent to improve its impurity removal effect; S3, stacking and combination: According to the required filtering level, the multi-layer structure of the filter bag is designed. The outer layer uses a coarse filter layer to capture large particles; the middle layer uses a medium-efficiency filter layer; the inner layer uses a high-efficiency filter layer; the different filter layers are stacked together through heat treatment; S4, molding and fixing: The filter material is cut as required to make the filter bag into a predetermined shape and size; the cut filter material is then sewn into the shape of the filter bag; S5. Post-processing: The filter bags are reinforced with edge reinforcement, reinforced seams, etc. to improve their durability and compression resistance.

[0012] The beneficial effects of the present invention are: In the present invention, in the daily filtering stage, that is, the pressure gauge shows that the value has not reached the threshold, the bottom of the bottom ring is pressed against, and the bottom ring and the lower ring plate are located on the same horizontal plane, thereby preventing gas and dust from overflowing from the bottom of the filter bag; at this time, the gas enters the inner cavity of the bag filter body from the air inlet pipe, and then is filtered by the filter bag and discharged from the air outlet pipe, thereby realizing the daily filtering function; When the value displayed on the pressure gauge reaches the threshold, it will first drop to expose the bottom opening of the filter bag. At this time, since the bottom ring is against the lower buckle belt and is located on the same horizontal plane as the lower ring disk, the bottom opening of the filter bag is located below the lower ring disk. At this time, the gas enters the main cavity of the bag filter from the air inlet pipe, and then passes through the filter bag and carries the dust in the filter bag cavity into the cavity below the lower ring disk through the bottom opening of the filter bag and the air vents, and is finally discharged from the exhaust pipe, thereby realizing self-cleaning of the filter bag. The entire process does not require the installation and disassembly of the filter bag, and the operation is simple, fast, and time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 What is shown is a schematic diagram of the three-dimensional structure of a functional coupling type bag-in-bag filter body in an embodiment; Figure 2 What is shown is a schematic diagram of the internal structure of a functional coupling type bag-in-bag filter body in an embodiment; Figure 3 What is shown is a schematic diagram of a three-dimensional structure of a functional coupling type filter bag in an embodiment; Figure 4 Shown is a schematic diagram of a skeleton structure in a functional coupling filter bag in an embodiment.

[0014] In the figure: 10, bag filter body; 11, foot; 12, sealing cover; 13, air inlet pipe; 14, air outlet pipe; 141, valve; 15, exhaust pipe; 16, upper ring plate; 161, limit step; 17, lower ring plate; 20, pressure gauge; 30, filter bag; 31, upper edge ring; 32, lower buckle belt; 40, frame; 41, top ring; 411, bolt; 42, bottom ring; 421, air vent; 43, support rod; 51, stud; 52, lifting plate. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0016] Example like Figure 1As shown, a functional coupling filter bag comprises a bag filter body 10 and a sealing cover 12 on the top, the side walls of the bag filter body 10 are interconnected with an air inlet pipe 13 and an air outlet pipe 14, and the air inlet pipe 13 is located above the air outlet pipe 14; a pressure gauge 20 is installed on the sealing cover 12, and the blockage condition of the filter bag 30 can be judged by the pressure display of the pressure gauge 20, that is, when the filter bag 30 is seriously blocked, the air intake of the air inlet pipe 13 is greater than the exhaust of the air outlet pipe 14, the inner cavity of the bag filter body 10 is pressurized, and the pressure of the pressure gauge 20 becomes larger; by the same token, when the pressure of the pressure gauge 20 is relatively small, the filter bag 30 is not blocked, so in this embodiment, a threshold value can be set, and when the pressure gauge 20 reaches the design threshold value, the filter bag 30 is self-cleaned.

[0017] like Figure 2 As shown, Figure 3 As shown, the inner cavity of the bag filter body 10 is installed with a matching filter bag 30 and a frame 40, the filter bag 30 is a straight cylinder and a lower buckle 32 is provided at the bottom, and a bottom ring 42 of the frame 40 is provided with a vent hole 421; The inner wall of the bag filter body 10 is fixedly connected with a lower ring disk 17, and the inner diameter of the lower ring disk 17 is adapted to the outer diameter of the filter bag 30. The skeleton 40 is installed in the inner cavity of the bag filter body 10, and the bottom ring 42 and the lower ring disk 17 are located on the same horizontal plane; 50 is arranged below the lower ring disk 17; the side wall of the bag filter body 10 is interconnected with a discharge pipe 15 lower than the air outlet pipe 14, and the height of the lower ring disk 17 is located between the air outlet pipe 14 and the discharge pipe 15; In the present invention, in the daily filtering stage, that is, the value displayed by the barometer 20 has not reached the threshold value, 50 is against the bottom of the bottom ring 42, and the bottom ring 42 and the lower ring plate 17 are located on the same horizontal plane, thereby preventing gas and dust from overflowing from the bottom of the filter bag 30; at this time, the gas enters the inner cavity of the bag filter body 10 from the air inlet pipe 13, and then is filtered by the filter bag 30 and discharged from the air outlet pipe 14, thereby realizing the daily filtering function; When the value displayed on the barometer 20 reaches the threshold value, first lower 50 to expose the bottom opening of the filter bag 30. At this time, since the bottom ring 42 is against the lower buckle belt 32 and is located on the same horizontal plane as the lower ring disk 17, the bottom opening of the filter bag 30 is located below the lower ring disk 17. At this time, the gas enters the cavity of the bag filter body 10 from the air inlet pipe 13, and then passes through the filter bag 30 and carries the dust in the inner cavity of the filter bag 30 to enter the cavity below the lower ring disk 17 through the bottom opening of the filter bag 30 and the air vent 421, and finally is discharged from the exhaust pipe 15, thereby realizing self-cleaning of the filter bag 30. The whole process does not require the installation and disassembly of the filter bag 30, and the operation is simple, fast, time-saving and labor-saving.

[0018] like Figure 1 , Figure 2As shown, a valve 141 is installed on the air outlet pipe 14. During the self-cleaning stage of the filter bag 30, the air outlet pipe 14 is closed by the valve 141, which can reduce the gas overflowing from the air outlet pipe 14, so that the gas pressure entering the air inlet pipe 13 is completely used for cleaning the filter bag 30, further improving the self-cleaning effect of the filter bag 30.

[0019] The bottom of the bag filter body 10 is threadedly inserted with a stud 51, and the top of the stud 51 is rotatably connected to the bottom of 50. In this embodiment, the lifting of 50 is through the threaded connection between the stud 51 and the bottom wall of the bag filter body 10. In actual applications, the lifting of 50 can be replaced by other lifting components with the same effect.

[0020] like Figure 1 As shown, a foot 11 is fixedly connected to the bottom outer side wall of the bag filter body 10 , and the height of the bag filter body 10 lifted by the foot 11 is greater than the length of the stud 51 .

[0021] like Figure 2 As shown, the inner wall of the bag filter body 10 is fixedly connected with an upper ring disc 16, and the inner diameter of the upper ring disc 16 is adapted to the outer diameter of the filter bag 30; a limiting step 161 is provided on the top of the upper ring disc 16, and an upper edge ring 31 is provided on the top of the filter bag 30, and the upper edge ring 31 is adapted to the limiting step 161. The limiting step 161 and the upper edge ring 31 are provided for limiting and fixing the top of the upper edge ring 31.

[0022] like Figure 4 As shown, the skeleton 40 also includes a top ring 41, and a plurality of support rods 43 are fixedly connected between the top ring 41 and the sealing cover 12. The plurality of support rods 43 surround the top ring 41 to form a circle that matches the inner diameter of the filter bag 30. The top ring 41 is fixed to the upper ring plate 16 by bolts 411.

[0023] A filter bag preparation process is applied to the filter bag 30 mentioned above, and the filter bag preparation process includes the following steps: S1. Material selection and preparation: The filter material is polypropylene among synthetic fibers. The selected filter material is pre-treated, including cleaning and drying, to ensure its stable performance in subsequent processing; S2. Filter material processing: The filter material is processed into filter cloth by air-laid process; then it is coated with waterproof agent to improve its impurity removal effect; S3, stacking and combination: According to the required filtering level, the multi-layer structure of the filter bag is designed. The outer layer uses a coarse filter layer to capture large particles; the middle layer uses a medium-efficiency filter layer; the inner layer uses a high-efficiency filter layer; the different filter layers are stacked together through heat treatment; S4, molding and fixing: The filter material is cut as required to make the filter bag into a predetermined shape and size; the cut filter material is then sewn into the shape of the filter bag; S5. Post-processing: The filter bags are reinforced with edge reinforcement, reinforced seams, etc. to improve their durability and compression resistance.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. A functional coupling filter bag, comprising a bag filter body (10) and a sealing cover (12) on the top, the side wall of the bag filter body (10) is interconnected with an air inlet pipe (13) and an air outlet pipe (14), and the air inlet pipe (13) is located above the air outlet pipe (14), and a matching filter bag (30) and a frame (40) are installed in the inner cavity of the bag filter body (10), characterized in that: The filter bag (30) is in a straight cylindrical shape and is provided with a lower buckle belt (32) at the bottom, and a bottom ring (42) of the frame (40) is provided with an air hole (421); The inner wall of the bag filter body (10) is fixedly connected with a lower ring disk (17), and the inner diameter of the lower ring disk (17) is matched with the outer diameter of the filter bag (30); the skeleton (40) is installed in the inner cavity of the bag filter body (10), and the rear bottom ring (42) and the lower ring disk (17) are located on the same horizontal plane; a (50) is arranged below the lower ring disk (17); the side wall of the bag filter body (10) is interconnected with a debris discharge pipe (15) lower than the air outlet pipe (14), and the height of the lower ring disk (17) is located between the air outlet pipe (14) and the debris discharge pipe (15); When the filter bag (30) is filtering, (50) abuts against the bottom of the bottom ring (42), and gas enters the filter bag (30) from the air inlet pipe (13) for filtration, and is discharged from the air outlet pipe (14) after being filtered by the filter bag (30); when the filter bag (30) is cleaned, (50) descends, and gas enters the filter bag (30) from the air inlet pipe (13) and carries dust in the inner cavity of the filter bag (30) and is discharged successively through the bottom opening of the filter bag (30), the air vent (421), and the impurity discharge pipe (15).

2. A functional coupling filter bag according to claim 1, characterized in that: The air outlet pipe (14) is provided with a valve (141).

3. A functional coupling filter bag according to claim 1, characterized in that: A stud (51) is threadedly inserted into the bottom of the bag filter body (10), and the top of the stud (51) is rotatably connected to the bottom of (50).

4. A functional coupling filter bag according to claim 3, characterized in that: A foot (11) is fixedly connected to the bottom outer wall of the bag filter body (10), and the height of the bag filter body (10) lifted by the foot (11) is greater than the length of the stud (51).

5. The functional coupling filter bag according to claim 1, characterized in that: An upper ring disk (16) is fixedly connected to the inner wall of the bag filter body (10), and the inner diameter of the upper ring disk (16) is matched with the outer diameter of the filter bag (30); A limiting step (161) is provided on the top of the upper ring disk (16), and an upper edge ring (31) is provided on the top of the filter bag (30), and the upper edge ring (31) and the limiting step (161) are matched.

6. A functional coupling filter bag according to claim 5, characterized in that: The skeleton (40) further comprises a top ring (41) at the top, and a plurality of support rods (43) are fixedly connected between the top ring (41) and the sealing cover (12), and the plurality of support rods (43) surround the top ring (41) to form a circle that matches the inner diameter of the filter bag (30); the top ring (41) is fixed to the upper ring plate (16) by bolts (411).

7. The functional coupling filter bag according to claim 1, characterized in that: A pressure gauge (20) is installed on the sealing cover (12).

8. A filter bag preparation process, characterized in that: The filter bag preparation process is applied to the filter bag (30) described in any one of claims 1 to 7, and the filter bag preparation process comprises the following steps: S1. Material selection and preparation: The filter material is polypropylene among synthetic fibers, and the selected filter material is pre-treated, including cleaning, drying, etc., to ensure its stable performance in subsequent processing; S2. Filter material processing: The filter material is processed into filter cloth by air-laid process; then it is coated with waterproof agent to improve its impurity removal effect; S3, stacking and combination: According to the required filtering level, the multi-layer structure of the filter bag is designed. The outer layer uses a coarse filter layer to capture large particles; the middle layer uses a medium-efficiency filter layer; the inner layer uses a high-efficiency filter layer; the different filter layers are stacked together through heat treatment; S4, molding and fixing: The filter material is cut as required to make the filter bag into a predetermined shape and size; the cut filter material is then sewn into the shape of the filter bag; S5. Post-processing: The filter bags are reinforced with edge reinforcement, reinforced seams, etc. to improve their durability and compression resistance.

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