An environmental filter bag with a leak-proof assembly

Abstract

This invention relates to the field of environmental filtration equipment technology, specifically to an environmentally friendly filter bag with a leak-proof component. The filter bag includes a filter bag body and a leak-proof opening / closing component fixedly disposed around the filter bag body. The filter bag body is a vertically continuous bag structure, with its top opening larger than its bottom opening, so that the leak-proof opening / closing component is tapered, wider at the top and narrower at the bottom. By incorporating the openable and closable leak-proof component, the bottom of the filter bag body can be kept sealed during filtration operations, preventing filter residue leakage and ensuring effective environmental filtration. During cleaning operations, the bottom of the filter bag body can be quickly opened to directly pour out the accumulated filter residue without disassembling the entire filter bag from the filtration equipment. This significantly simplifies cleaning operations, reduces the workload of maintenance personnel, minimizes downtime of the filtration system, ensures production continuity, and avoids damage to the filter bag and fixed sealing structure caused by frequent disassembly, reducing the risk of subsequent leaks.

Description

Technical Field

[0001] This invention relates to the field of environmental filtration equipment technology, specifically to an environmentally friendly filter bag with leak-proof components. Background Technology

[0002] In many fields such as industrial dust removal, waste gas treatment, and environmental filtration, filter bags, as core filtration components, bear the important mission of intercepting dust and impurities, purifying fluid media, and ensuring emissions compliance and production environment safety. The rationality of their structural design directly affects filtration efficiency, ease of operation and maintenance, and environmental performance. Currently, mainstream environmental filter bags on the market have two main forms in their bottom structure design, both of which suffer from the technical challenge of balancing leak-proof sealing with convenient sludge removal, severely restricting the practical application experience and promotional value of filter bags. The first type of mainstream filter bag is a bottom-sealed structure. Its bottom is often sealed using processes such as flat seams or double rolled edges, which can effectively prevent dust and other filter residues from leaking from the bottom during the filtration process, ensuring the stability and environmental friendliness of the filtration process. It is suitable for basic filtration scenarios with high requirements for leakage control. However, this structure has obvious maintenance defects: during long-term filtration, filter residues will continuously accumulate inside the filter bag. When the filter residues accumulate to a certain amount, it will lead to a decrease in the air permeability of the filter bag, an increase in filtration resistance, and even problems such as filter bag blockage and damage, which will affect the operating efficiency of the entire filtration system. In severe cases, the filter bag may even be flattened and deformed due to excessive resistance. Since its bottom is completely sealed, when cleaning the internal filter residues, the entire filter bag must be disassembled from the filtration equipment. The disassembly process requires removing the spring ring, flange and other fixing structures at the top of the filter bag. The operation is cumbersome, time-consuming and labor-intensive. It not only increases the labor intensity of maintenance personnel, but also causes the filtration system to be shut down for a long time, affecting the continuity of production. At the same time, frequent disassembly may also damage the sealing structure between the filter bag and the cage and tube sheet, which may lead to leakage risks after subsequent installation. The second mainstream filter bag is the bottom-opening structure. This structure is designed to solve the problem of inconvenient cleaning of bottom-sealed filter bags. Its bottom is not sealed, and theoretically, the internal filter residue can be cleaned directly through the bottom opening without disassembling the entire filter bag. This simplifies the cleaning operation to a certain extent and reduces maintenance costs and downtime losses. However, the sealing and leakage prevention performance of this structure is extremely poor. To prevent filter residue from leaking from the bottom opening during filtration, operators usually need to use ropes or other components to tie knots to seal the bottom opening. This knotting sealing method has an irreconcilable contradiction: if the knot is too tight, although it can improve the sealing performance to a certain extent and reduce the risk of leakage, it is difficult to quickly untie the knot when cleaning the filter residue later. It may even cause the knot to get stuck, making the cleaning operation impossible and increasing the difficulty of maintenance. If the knot is too loose, although it is easy to untie the knot for cleaning later, the sealing performance cannot be guaranteed. During the filtration process, fine dust or filter residue that has not been intercepted will leak from the gaps in the knot. In view of this, we propose an environmentally friendly filter bag with a leak-proof component to solve the above-mentioned technical problems. Summary of the Invention

[0003] The purpose of this invention is to provide an environmentally friendly filter bag with a leak-proof component to solve the aforementioned problems.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an environmentally friendly filter bag with a leak-proof component, comprising: The filter bag body and the leak-proof opening and closing assembly fixedly installed on the periphery of the filter bag body. The filter bag body is a bag-shaped structure that runs through the top and bottom, and its top opening is larger than its bottom opening, so that the leak-proof opening and closing assembly is a cone shape that is larger at the top and smaller at the bottom. The leak-proof opening and closing assembly is located at one end near the bottom opening of the filter bag body and above the bottom opening of the filter bag body. The leak-proof opening and closing assembly includes: Two elastic clamping strips are located on both sides of the filter bag body. The two elastic clamping strips press the bottom of the filter bag body closed, sealing the bottom of the filter bag body and blocking the filter material inside the filter bag body, so that the filter bag body does not leak. Two drive sliders are located at both ends of two elastic clamping strips. By moving the two drive sliders in opposite directions, they squeeze the ends of the two elastic clamping strips, causing the two elastic clamping strips to arch and open the bottom of the filter bag body, thereby pouring out the filter residue inside the filter bag body.

[0005] As a preferred embodiment of the present invention, both ends of the elastic clamping strip are bent with inclined sections, and the ends of the inclined sections are bent with rounded edges. The top wall of the driving slider is fixedly provided with two connecting shafts, which are respectively inserted into the corresponding two rounded edges, and the rounded edges and the connecting shafts are rotatable. Rubber pads are fixedly provided on the opposite surfaces of the two elastic clamping strips.

[0006] As a preferred embodiment of the present invention, two guide holes are provided through both ends of the opposite surfaces of the two driving sliders, and a guide rod is slidably disposed inside each of the guide holes. A push-pull block is provided on the side of the two driving sliders that are far apart. The push-pull block is fixed to the ends of the two guide rods on the same side, and a gap is provided between the guide rod and one of the driving sliders on the corresponding side.

[0007] As a preferred embodiment of the present invention, two annularly distributed sliding pins are fixedly provided at the end of the outer ring surface of the guide rod away from the push-pull block. A rotating sleeve is movably sleeved around the two coaxial guide rods. Two annularly distributed threaded grooves are opened through both ends of the outer ring surface of the rotating sleeve. The positions of the threaded grooves correspond one-to-one with the positions of the sliding pins. The sliding pins are slidably disposed in the corresponding threaded grooves. Two fixed paddles are fixedly provided on the outer ring surface of the rotating sleeve. A connecting strip is fixedly provided on the two fixed paddles. An operating handle is fixedly provided in the middle of the connecting strip.

[0008] In a preferred embodiment of the present invention, a return spring is fixedly disposed between the two coaxial guide rods. The two ends of the return spring are respectively fixed to the ends of the two coaxial guide rods. The outer diameter of the return spring is smaller than the inner diameter of the rotating sleeve so that the return spring can be accommodated inside the rotating sleeve. In the initial state, the return spring is in a slightly compressed and pre-tensioned state.

[0009] As a preferred embodiment of the present invention, a push block is fixedly provided on the opposite surfaces of the two push-pull blocks, and a through groove is opened on the opposite surfaces of the two drive sliders to accommodate the push block. The push block passes through the inside of the through groove and extends to the two inclined sections between the two elastic clamping pressure bars. In the initial state, the outer surface of the push block is in contact with the outer surfaces of the two inclined sections.

[0010] As a preferred embodiment of the present invention, at least one anti-rotation strip is fixedly provided on the outer wall of the guide rod, and at least one anti-rotation groove is provided on the inner wall of the guide hole. The anti-rotation strip is slidably inserted into the anti-rotation groove, thereby limiting the rotational torque between the guide rod and the drive slider.

[0011] As a preferred embodiment of the present invention, a limiting sleeve is slidably provided on the periphery of both guide rods fixed to one of the push-pull blocks. A positioning head is integrally provided on the end of the limiting sleeve near the rotating sleeve. A positioning slot that can accommodate the positioning head is opened on the end of the rotating sleeve near the limiting sleeve. In the initial state, the positioning slot and the positioning head are symmetrical about the central angle of the guide rod. A fixing ring is fixedly provided on the outer wall of the guide rod near the anti-rotation strip. A compression spring is fixedly provided between the fixing ring and the limiting sleeve. The compression spring is sleeved on the periphery of the guide rod.

[0012] As a preferred embodiment of the present invention, the outer ring surface of the guide rod is provided with a guide groove along its axial direction, and the outer ring surface of the limiting push sleeve is provided with a guide hole through its radial direction. A guide block is fixedly provided inside the guide hole, and the guide block extends into the guide groove so that the limiting push sleeve can move along the axial direction of the guide rod, and the limiting push sleeve and the guide rod are torsion-limited.

[0013] As a preferred embodiment of the present invention, the two rubber pads are configured with a corrugated surface on one side that is close to each other, and the corrugated surfaces of the two rubber pads are bonded to the outer surface of the filter bag body with glue.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting an openable and closable leak-proof opening and closing component, the bottom of the filter bag body can be kept sealed during filtration operations to prevent filter residue leakage and ensure environmental filtration effect. During sludge cleaning operations, the bottom of the filter bag body can be quickly opened to directly pour out the filter residue accumulated inside, without having to disassemble the entire filter bag from the filtration equipment. This greatly simplifies the sludge cleaning operation, reduces the labor intensity of maintenance personnel, and also reduces the downtime of the filtration system, ensuring production continuity. At the same time, it avoids damage to the filter bag and fixed sealing structure caused by frequent disassembly, reducing the risk of subsequent leakage.

[0015] 2. In this invention, by rotating the rotating sleeve, the threaded groove and the sliding pin can be used to drive the two guide rods to move synchronously in opposite directions, thereby driving the push block to squeeze the inclined section of the elastic clamping strip, so that the two elastic clamping strips arch and open, and the bottom of the filter bag body can be quickly opened to complete the slag removal. The operation process can be completed by simply rotating the operating handle, without complicated disassembly, and the operation is convenient and smooth.

[0016] 3. In this invention, by setting interlocking corrugated rubber pads, the sealing fit can be improved. Even if there are slight thickness differences in the filter bag body, the corrugated deformation can fully fit it, further improving the sealing and leak prevention effect and reducing the risk of filter residue leakage during the filtration process. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the anti-leakage opening and closing component in this invention; Figure 3 This is a schematic diagram of the bottom planar structure of the anti-leakage opening and closing component in this invention; Figure 4 This is a schematic diagram of the unfolded structure of the driving slider and the elastic clamping pressure bar in this invention; Figure 5 This is a schematic diagram of the structure of the push block in this invention; Figure 6This is a schematic diagram of the unfolded structure of the rotating sleeve and guide rod in this invention; Figure 7 This is a schematic diagram of the unfolded structure of the limiting push sleeve and guide rod in this invention; Figure 8 This is a schematic diagram of the fracture structure of the elastic clamping strip in this invention.

[0018] In the diagram: 100, filter bag body; 200, leak-proof opening and closing assembly; 201, elastic clamping strip; 202, inclined section; 203, rounded edge section; 204, drive slider; 205, connecting shaft; 206, rubber pad; 207, guide hole; 208, guide rod; 209, push-pull block; 2010, sliding pin; 2011, rotating sleeve; 2012, threaded groove; 2013, fixing block; 2014 1. Connecting strip; 2015. Operating handle; 2016. Return spring; 2017. Push block; 2018. Anti-rotation slide bar; 2019. Anti-rotation slide groove; 2020. Limiting push sleeve; 2021. Positioning clip; 2022. Positioning slot; 2023. Fixing ring; 2024. Compression spring; 2025. Guide slide groove; 2026. Guide hole; 2027. Guide block; 2028. Through groove. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1 to 8 The technical solution provided by the present invention specifically includes the following embodiments: An environmentally friendly filter bag with a leak-proof component includes a filter bag body 100 and a leak-proof opening and closing component 200 fixedly disposed around the filter bag body 100. The filter bag body 100 is a bag structure that runs vertically through the bag, and its top opening is larger than its bottom opening, so that the leak-proof opening and closing component 200 is a cone shape that is larger at the top and smaller at the bottom. The leak-proof opening and closing component 200 is located at one end near the bottom opening of the filter bag body 100 and above the bottom opening of the filter bag body 100.

[0021] For further details, please refer to [link / reference]. Figure 3 , Figure 4 , Figure 8 As shown: The leak-proof opening and closing assembly 200 includes two elastic clamping strips 201 and two driving sliders 204. The two elastic clamping strips 201 are located on both sides of the filter bag body 100. The two elastic clamping strips 201 press and close the bottom of the filter bag body 100, sealing the bottom of the filter bag body 100 and blocking the filter material inside the filter bag body 100, preventing leakage. The two driving sliders 204 are located at both ends of the two elastic clamping strips 201. By moving the two driving sliders 204 in opposite directions, they press the two ends of the two elastic clamping strips 201, causing the two elastic clamping strips 201 to arch and open the bottom of the filter bag body 100, thereby opening the filter bag. The filter residue inside the main body 100 is poured out. Both ends of the elastic clamping strip 201 are bent with inclined sections 202, and the ends of the inclined sections 202 are bent with rounded edges 203. Two connecting shafts 205 are fixedly mounted on the top wall of the drive slider 204. The two connecting shafts 205 are respectively inserted into the corresponding rounded edges 203, and the rounded edges 203 and connecting shafts 205 are rotatable. Rubber pads 206 are fixedly mounted on the opposite surfaces of the two elastic clamping strips 201. The side of the two rubber pads 206 facing towards each other is designed as a corrugated surface that interlocks. The corrugated surfaces of the two rubber pads 206 are bonded to the outer surface of the filter bag main body 100 with adhesive. During filtration, under the elastic action of the two elastic clamping strips 201, the two rubber pads 206 are clamped towards the middle, so that the corrugated surfaces of the two rubber pads 206 interlock in an arc shape, pressing and closing the bottom of the filter bag main body 100. At this time, filtration can be achieved through the filter bag main body 100.

[0022] For further details, please refer to [link / reference]. Figure 4 , Figure 5 , Figure 6 As shown: Two guide holes 207 are formed through both ends of the opposite surfaces of the two driven sliders 204. Guide rods 208 are slidably disposed inside each guide hole 207. Push-pull blocks 209 are provided on the opposite sides of the two driven sliders 204. The push-pull blocks 209 are fixed to the ends of the two guide rods 208 on the same side, and a gap is provided between each guide rod 208 and a corresponding driven slider 204 on its side. Two annularly distributed sliding pins 2010 are fixedly disposed at the outer end of the guide rod 208 away from the push-pull block 209. A rotating sleeve 2011 is movably sleeved around the two coaxial guide rods 208. Two annularly distributed threaded grooves 2012 are formed through both ends of the outer annular surface of the rotating sleeve 2011. The threaded grooves 2012 are positioned relative to the sliding pins 2010. The pins 2010 are positioned one-to-one, and the sliding pins 2010 are slidably set inside the corresponding threaded grooves 2012. Two fixed blocks 2013 are fixedly set on the outer ring surface of the rotating sleeve 2011. A connecting strip 2014 is fixedly set on the two fixed blocks 2013. An operating handle 2015 is fixedly set in the middle of the connecting strip 2014. A return spring 2016 is fixedly set between the two coaxial guide rods 208. The two ends of the return spring 2016 are fixed to the ends of the two coaxial guide rods 208 respectively. The outer diameter of the return spring 2016 is smaller than the inner diameter of the rotating sleeve 2011 so that the return spring 2016 can be accommodated inside the rotating sleeve 2011. In the initial state, the return spring 2016 is in a slightly compressed and pre-tensioned state.When the filter residue accumulated inside the filter bag body 100 needs to be cleaned, first take out a collection bag and hang it at the bottom of the leak-proof opening and closing assembly 200, so that the bottom vent of the filter bag body 100 is above the bag opening of the collection bag. Then, hold the two operating handles 2015 with both hands and rotate the two connecting bars 2014 upwards. The two connecting bars 2014 drive the two rotating sleeves 2011 to rotate together through the corresponding fixed levers 2013. During the rotation of the two rotating sleeves 2011, the sliding pins 2010 are squeezed by the side walls of the corresponding threaded grooves 2012, which drives the two coaxial guide rods 208 to move to the opposite side as a whole. The two guide rods 208 drive the two push-pull blocks 209 to move to the opposite side synchronously. The return spring 2016 is compressed and stores elasticity. Since there is a gap between the push-pull block 209 and the drive slider 204, the push-pull block 209... During the initial movement, the drive slider 204 remains in its initial position until the push-pull block 209 moves and contacts the drive slider 204. As the push-pull block 209 continues to move, it drives the two drive sliders 204 to move to the opposite side. The two drive sliders 204 then drive the two connecting shafts 205 inserted inside them to move synchronously, further pulling the two ends of the two elastic clamping strips 201 closer together. This causes the two elastic clamping strips 201 to arch and deform, completely opening the bottom of the originally closed filter bag body 100. The filter residue accumulated inside the filter bag body 100 automatically falls downwards under gravity and is discharged into the pre-placed collection bag through the open opening, completing the automatic cleaning and unloading of the filter residue. The entire process does not require manual pulling or shaking of the filter bag and will not cause filter residue leakage or splashing, making the cleaning operation more convenient and environmentally friendly.

[0023] For further details, please refer to [link / reference]. Figure 4 , Figure 5 As shown: Two push-pull blocks 209 are fixedly provided with push blocks 2017 on their opposite surfaces. Two drive sliders 204 are provided with through slots 2028 through their opposite surfaces to accommodate the push blocks 2017. The push blocks 2017 pass through the through slots 2028 and extend to the two inclined sections 202 between the two elastic clamping bars 201. In the initial state, the outer surface of the push blocks 2017 is in contact with the outer surface of the two inclined sections 202. Because there is a gap between the push-pull block 209 and the drive slider 204, the drive slider 204 remains in its initial position while the push-pull block 209 begins to move. At this time, the two push-pull blocks 209 will drive the push block 2017 to move together. The push block 2017 will press the bent inclined sections 202 at the ends of the two elastic clamping strips 201 inward, so that the two inclined sections 202 are pressed and the two ends of the two elastic clamping strips 201 gradually move away from each other. The two elastic clamping strips 201 are pressed and gradually arch outward, so that after the two drive sliders 204 press the two ends of the two elastic clamping strips 201, the two elastic clamping strips 201 can arch in the opposite direction as designed, avoiding the two elastic clamping strips 201 arching in the wrong direction, which would prevent the bottom of the filter bag body 100 from opening smoothly, thus ensuring the smooth execution of the slag discharge action.

[0024] For further details, please refer to [link / reference]. Figure 4 , Figure 7 As shown: At least one anti-rotation strip 2018 is fixedly provided on the outer wall of the guide rod 208, and at least one anti-rotation groove 2019 is provided on the inner wall of the guide hole 207. The anti-rotation strip 2018 is slidably inserted into the anti-rotation groove 2019, thereby limiting the rotational torque between the guide rod 208 and the drive slider 204. By limiting the torque, the guide rod 208 will not rotate when sliding along the axial direction of the guide hole 207, thus ensuring that the sliding pin 2010 always maintains a corresponding positional relationship with the threaded groove 2012. This prevents the guide rod 208 from rotating along with the rotating sleeve 2011, which could cause the sliding pin 2010 to become misaligned and jammed, ensuring a stable and smooth transmission process.

[0025] For further details, please refer to [link / reference]. Figure 6 , Figure 7 As shown: Two guide rods 208, which are fixed to one of the push-pull blocks 209, are slidably provided with limiting sleeves 2020 on their outer peripheries. A positioning head 2021 is integrally provided at the end of the limiting sleeve 2020 near the rotating sleeve 2011. A positioning groove 2022 is provided at the end of the rotating sleeve 2011 near the limiting sleeve 2020 to accommodate the positioning head 2021. In the initial state, the positioning groove 2022 and the positioning head 2021 are symmetrical about the central angle of the guide rod 208. A fixing ring 2023 is fixedly provided at the end of the outer wall of the guide rod 208 near the anti-rotation strip 2018. A compression spring 2024 is fixedly installed between the 2023 and the limiting push sleeve 2020. The compression spring 2024 is sleeved around the guide rod 208. A guide groove 2025 is opened on the outer ring surface of the guide rod 208 along its axial direction. A guide hole 2026 is opened through the outer ring surface of the limiting push sleeve 2020 along its radial direction. A guide block 2027 is fixedly installed inside the guide hole 2026. The guide block 2027 extends into the guide groove 2025 so that the limiting push sleeve 2020 can move along the axial direction of the guide rod 208, and the limiting push sleeve 2020 and the guide rod 208 are torsion-limited. During the rotation of the rotating sleeve 2011, the positioning slot 2022 also rotates together. Once the positioning slot 2022's rotation angle aligns with that of the rotating sleeve 2011, the limiting push sleeve 2020 moves axially along the guide rod 208 under the force of the compression spring 2024. This causes the positioning head 2021 to engage inside the positioning slot 2022, locking the rotating sleeve 2011 in its rotated position. This allows the two driving sliders 204 to remain inwardly close, maintaining the bottom of the filter bag body 100 open without requiring continuous force to hold the operating handle 2015, facilitating natural discharge of filter residue and reducing the operator's workload. After cleaning, the limiting push sleeve 2020 is manually moved by the guide block 2027. The guide rod 208 moves in the opposite direction along its axis, and the compression spring 2024 is compressed again to accumulate elastic potential energy until the positioning head 2021 is completely removed from the positioning slot 2022. At this time, the rotating sleeve 2011 loses its torsional limit. Under the action of the return spring 2016, the two guide rods 208 automatically reset in the direction away from each other, driving the entire anti-leakage assembly back to its initial closed state, and re-pressing and sealing the bottom of the filter bag body 100, so that filtration can be carried out again. The operation is convenient and the reset is efficient. It can stably realize the switching between anti-leakage filtration and quick sludge removal. The overall structure is compact and the sealing is reliable, effectively avoiding filter residue leakage and environmental pollution, which meets the usage requirements of environmentally friendly filtration operations.

[0026] The working principle of an environmentally friendly filter bag with leak-proof components in this solution is as follows: During the filtration process, the elastic action of the two elastic clamping strips 201 clamps the two rubber pads 206 towards the middle, so that the wavy and pleated surfaces of the two rubber pads 206 interlock in an arc shape, pressing and closing the bottom of the filter bag body 100. At this time, the filtration purpose can be achieved through the filter bag body 100. When the filter residue accumulated inside the filter bag body 100 needs to be cleaned, first take out a collection bag and hang it at the bottom of the leak-proof opening and closing assembly 200, so that the drain port at the bottom of the filter bag body 100 is above the bag opening of the collection bag. Then, hold the two operating handles 2015 with both hands and rotate the two connecting bars 2014 upwards. The two connecting bars 2014 drive the two rotating sleeves 2011 to rotate together through the corresponding fixed levers 2013. During the rotation of the two rotating sleeves 2011, they pass through the corresponding threaded grooves 2012. The sidewall presses against the sliding pin 2010, causing the two coaxial guide rods 208 to move to opposite sides. The two guide rods 208 then drive the two push-pull blocks 209 to move synchronously to opposite sides. The return spring 2016 is compressed, accumulating elastic potential energy. Because there is a gap between the push-pull block 209 and the drive slider 204, the drive slider 204 remains in its initial position while the push-pull block 209 begins to move. At this time, the two push-pull blocks 209 will drive the push block 2017 to move together. The push block 2017 will... The two elastic clamping strips 201 are pressed inwards, causing the two inclined sections 202 at their ends to gradually move away from each other. The two elastic clamping strips 201 are then compressed and gradually arch outwards until the push-pull block 209 moves and contacts the drive slider 204. As the push-pull block 209 continues to move, it drives the two drive sliders 204 to move to opposite sides. Each drive slider 204 then drives two connecting parts inserted inside it. The shaft 205 moves synchronously, further pulling the two ends of the two elastic clamping strips 201 closer to each other, causing the two elastic clamping strips 201 to arch and deform as a whole, completely opening the bottom of the originally closed filter bag body 100. The filter residue accumulated inside the filter bag body 100 automatically falls downward under the action of gravity and is discharged into the pre-placed collection bag from the open opening, completing the automatic cleaning and unloading of filter residue. The entire process does not require manual pulling or shaking of the filter bag, and will not cause filter residue leakage or splashing, making the cleaning operation more convenient and environmentally friendly. During the rotation of the rotating sleeve 2011, the positioning slot 2022 also rotates together. Once the positioning slot 2022's rotation angle aligns with that of the rotating sleeve 2011, the limiting push sleeve 2020 moves axially along the guide rod 208 under the force of the compression spring 2024. This causes the positioning head 2021 to engage inside the positioning slot 2022, locking the rotating sleeve 2011 in its rotated position. This allows the two driving sliders 204 to remain inwardly close, maintaining the bottom of the filter bag body 100 open without requiring continuous force to hold the operating handle 2015, facilitating natural discharge of filter residue and reducing the operator's workload. After cleaning, the limiting push sleeve 2020 is manually moved by the guide block 2027. The guide rod 208 moves in the opposite direction along its axis, and the compression spring 2024 is compressed again to accumulate elastic potential energy until the positioning head 2021 is completely removed from the positioning slot 2022. At this time, the rotating sleeve 2011 loses its torsional limit. Under the action of the return spring 2016, the two guide rods 208 automatically reset in the direction away from each other, driving the entire anti-leakage assembly back to its initial closed state, and re-pressing and sealing the bottom of the filter bag body 100, so that filtration can be carried out again. The operation is convenient and the reset is efficient. It can stably realize the switching between anti-leakage filtration and quick sludge removal. The overall structure is compact and the sealing is reliable, effectively avoiding filter residue leakage and environmental pollution, which meets the usage requirements of environmentally friendly filtration operations.

[0027] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. An environmentally friendly filter bag with a leak-proof component, characterized in that: include: The filter bag body (100) and the leak-proof opening and closing assembly (200) fixedly disposed around the filter bag body (100) are provided. The filter bag body (100) is a bag-shaped structure that runs through the top and bottom, and its top opening is larger than its bottom opening, so that the leak-proof opening and closing assembly (200) is a cone shape that is larger at the top and smaller at the bottom. The leak-proof opening and closing assembly (200) is located at one end close to the bottom opening of the filter bag body (100) and above the bottom opening of the filter bag body (100). The leak-proof opening and closing assembly (200) includes: Two elastic clamping strips (201) are located on both sides of the filter bag body (100). The two elastic clamping strips (201) press the bottom of the filter bag body (100) closed, sealing the bottom of the filter bag body (100) and blocking the filter material inside the filter bag body (100) so that the filter bag body (100) does not leak. Two drive sliders (204) are set at both ends of two elastic clamping strips (201). By moving the two drive sliders (204) in opposite directions, the two elastic clamping strips (201) are squeezed at both ends, causing the two elastic clamping strips (201) to arch and open the bottom of the filter bag body (100), thereby pouring out the filter residue inside the filter bag body (100).

2. The environmentally friendly filter bag with a leak-proof component according to claim 1, characterized in that: Both ends of the elastic clamping strip (201) are bent with inclined sections (202), and the ends of the inclined sections (202) are bent with rounded edge sections (203). The top wall of the drive slider (204) is fixedly provided with two connecting shafts (205). The two connecting shafts (205) are respectively inserted into the corresponding two rounded edge sections (203), and the rounded edge sections (203) and the connecting shafts (205) can rotate. The opposite surfaces of the two elastic clamping strips (201) are fixedly provided with rubber pads (206).

3. An environmentally friendly filter bag with a leak-proof component according to claim 2, characterized in that: Two guide holes (207) are opened through both ends of the opposite surfaces of the two drive sliders (204). A guide rod (208) is slidably arranged inside the guide hole (207). A push-pull block (209) is provided on the side of the two drive sliders (204) that are far apart. The push-pull block (209) is fixed to the end of the two guide rods (208) on the same side. A gap is provided between the guide rod (208) and a drive slider (204) on the corresponding side.

4. An environmentally friendly filter bag with a leak-proof component according to claim 3, characterized in that: Two annularly distributed sliding pins (2010) are fixedly provided at the end of the outer ring surface of the guide rod (208) away from the push-pull block (209). A rotating sleeve (2011) is movably sleeved around the two coaxial guide rods (208). Two annularly distributed threaded grooves (2012) are opened through both ends of the outer ring surface of the rotating sleeve (2011). The positions of the threaded grooves (2012) correspond one-to-one with the positions of the sliding pins (2010). The sliding pins (2010) are slidably disposed inside the corresponding threaded grooves (2012). Two fixed levers (2013) are fixedly provided on the outer ring surface of the rotating sleeve (2011). A connecting strip (2014) is fixedly provided on both fixed levers (2013). An operating handle (2015) is fixedly provided in the middle of the connecting strip (2014).

5. An environmentally friendly filter bag with a leak-proof component according to claim 4, characterized in that: in, A return spring (2016) is fixedly disposed between the two guide rods (208) located on the same axis. The two ends of the return spring (2016) are respectively fixed to the ends of the two guide rods (208) on the same axis. The outer diameter of the return spring (2016) is smaller than the inner diameter of the rotating sleeve (2011) so that the return spring (2016) can be accommodated inside the rotating sleeve (2011). In the initial state, the return spring (2016) is in a slightly compressed and pre-tensioned state.

6. An environmentally friendly filter bag with a leak-proof component according to claim 5, characterized in that: Each of the two push-pull blocks (209) has a push block (2017) fixedly installed on its opposite surface. Each of the two drive sliders (204) has a through groove (2028) through which the push block (2017) passes. The push block (2017) passes through the through groove (2028) and extends to the area of ​​the two inclined sections (202) between the two elastic clamping pressure bars (201). In the initial state, the outer surface of the push block (2017) is in contact with the outer surface of the two inclined sections (202).

7. An environmentally friendly filter bag with a leak-proof component according to claim 6, characterized in that: At least one anti-rotation strip (2018) is fixedly provided on the outer wall of the guide rod (208), and at least one anti-rotation groove (2019) is provided on the inner wall of the guide hole (207). The anti-rotation strip (2018) is slidably inserted into the anti-rotation groove (2019), thereby limiting the rotational torque between the guide rod (208) and the drive slider (204).

8. An environmentally friendly filter bag with a leak-proof component according to claim 7, characterized in that: Two guide rods (208) fixed to one of the push-pull blocks (209) are slidably provided with limit sleeves (2020) on their periphery. The limit sleeve (2020) is integrally provided with a positioning head (2021) at one end near the rotating sleeve (2011). The rotating sleeve (2011) is provided with a positioning slot (2022) that can accommodate the positioning head (2021) at one end near the limit sleeve (2020). In the initial state, the positioning slot (2022) and the positioning head (2021) are symmetrical about the central angle of the guide rod (208). A fixing ring (2023) is fixedly provided at one end of the outer wall of the guide rod (208) near the anti-rotation strip (2018). A compression spring (2024) is fixedly provided between the fixing ring (2023) and the limit sleeve (2020). The compression spring (2024) is sleeved on the periphery of the guide rod (208).

9. An environmentally friendly filter bag with a leak-proof component according to claim 8, characterized in that: The outer ring surface of the guide rod (208) is provided with a guide groove (2025) along its axial direction, and the outer ring surface of the limiting push sleeve (2020) is provided with a guide hole (2026) along its radial direction. A guide block (2027) is fixedly provided inside the guide hole (2026). The guide block (2027) extends into the guide groove (2025) so that the limiting push sleeve (2020) can move along the axial direction of the guide rod (208), and the limiting push sleeve (2020) and the guide rod (208) are torsion-limited.

10. An environmentally friendly filter bag with a leak-proof component according to claim 9, characterized in that: The two rubber pads (206) are arranged on one side that is close to each other, forming a corrugated surface that interlocks with each other. The corrugated surfaces of the two rubber pads (206) are bonded to the outer surface of the filter bag body (100) with glue.

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