Bag filter with controllable filtering precision for preventing and treating environmental pollution

Abstract

The invention discloses an environmental pollution prevention and control bag filter with controllable filtering precision, and relates to the technical field of bag filters, the environmental pollution prevention and control bag filter comprises a shell, two groups of support legs are symmetrically mounted outside the shell, a water inlet pipe is connected to the upper part of one side of the shell in a penetrating manner, and a water outlet pipe is connected to the bottom of the shell in a penetrating manner; an end cover is arranged at the top of the shell, a sealing gasket is arranged at the connecting position of the end cover and the shell, the fixing seat is fixedly installed above one side of the shell, a supporting frame is rotationally connected to the top of the fixing seat, a threaded sleeve is fixedly installed at one end of the supporting frame, a threaded rod is in threaded connection with the interior of the threaded sleeve, and the threaded rod is in threaded connection with the threaded rod. Meanwhile, the screw rod is rotationally connected with the end cover; through the arrangement of the filter element, large-size sharp impurities in wastewater can be filtered when the wastewater is filtered, the sharp impurities are prevented from entering a filter bag, the filter bag is prevented from being scratched, the subsequent filtering operation is prevented from being influenced, and the practicability is improved.

Description

Technical Field

[0001] The invention relates to the technical field of bag filters, in particular to a bag filter with controllable filtering accuracy for environmental pollution prevention and control. Background Art

[0002] The bag filter is composed of a cylinder, a stainless steel filter screen, a sewage discharge part, a transmission device and an electrical control part. The bag filter is a multi-purpose filtering equipment with novel structure, small size, simple and flexible operation, energy saving, high efficiency, closed working and strong applicability.

[0003] For example, an automatic temperature control transformer with announcement number CN219681878U is constructed by placing a filter bag in the inner cavity of a bag filter housing, and placing the edge of the filter bag on the top of a fixing ring, and then clamping the top cover in the inner cavity of the top of the bag filter housing. At this time, the positioning rod is clamped in the inner cavity of the positioning hole, and the inner cavity of the second fixing hole and the inner cavity of the first fixing hole are in a vertical state. The top cover is then fixed with a fixing piece. At this time, the hexagon socket bolt passes through the inner cavity of the first fixing hole and enters the inner cavity of the second fixing hole, and the threaded cap is screwed until the threaded cap is installed on the outer surface of the hexagon socket bolt, and the top of the threaded cap contacts the bottom of the fixing ear. During this period, different filters can be replaced by installing The purpose of the filter bag is to control the filtration accuracy, thereby facilitating the installation of the filter bag and controlling the filtration accuracy, thereby avoiding the phenomenon of poor filtration effect caused by gaps around the filter bag. However, when used in the metal processing industry or the electronics manufacturing industry, the wastewater generated by the processing will contain some metal parts or glass fragments. When filtering the production wastewater, these relatively sharp impurities will flow into the filter bag with the impact of the water flow. These sharp impurities can easily scratch the filter bag under the impact of the water flow, easily causing damage to the filter bag, which will affect the subsequent filtration work. In addition, when controlling the filtration accuracy, it is not convenient to quickly replace the filter bag, and there are certain usage defects.

[0004] Therefore, we propose a bag filter with controllable filtration accuracy for environmental pollution prevention and control, so as to solve the above-mentioned problems. Summary of the invention

[0005] The purpose of the present invention is to provide a bag filter with controllable filtration accuracy for environmental pollution prevention and control, so as to solve the problem raised in the above background technology that when used in the metal processing industry or the electronic manufacturing industry, the wastewater generated by the processing may contain some metal parts or glass fragments. When the production wastewater is filtered, these relatively sharp impurities will flow into the filter bag with the impact of the water flow. These sharp impurities are easy to scratch the filter bag under the impact of the water flow, which can easily cause the filter bag to be damaged.

[0006] To achieve the above object, the present invention provides the following technical solution: a bag filter with controllable filtration accuracy for environmental pollution prevention and control, comprising a housing, two sets of supporting legs are symmetrically installed on the outside of the housing, a water inlet pipe is connected through the top of one side of the housing, and a water outlet pipe is connected through the bottom of the housing, an end cover is provided at the top of the housing, and a sealing gasket is provided at the connection between the end cover and the housing; Also includes: A fixing seat, fixedly installed on one side of the housing, the top of the fixing seat is rotatably connected to a support frame, one end of the support frame is fixedly installed with a threaded sleeve, and the internal thread of the threaded sleeve is connected to a screw rod, and the screw rod is rotatably connected to the end cover; A filter assembly is disposed inside the housing, and the filter assembly includes a fixing ring; The fastening components are symmetrically arranged outside the connection between the housing and the end cover in two groups; A fixing ring is fixedly installed on the upper part of the inner part of the shell, a filter frame is arranged inside the fixing ring, and a plurality of through holes are opened through the outer part of the filter frame, and a support ring is fixedly installed on the upper part of the outer part of the filter frame, and two groups of mounting holes are symmetrically opened and closed through the top of the fixing ring, and two groups of mounting rods are symmetrically installed on the bottom of the support ring, and the mounting rods are adapted to be connected with the mounting holes; The filter bag is arranged inside the filter frame, two groups of positioning rods are symmetrically installed on the top of the support ring, a cross is fixedly installed inside the end cover, and two groups of fixing rods are symmetrically installed on the bottom of the cross.

[0007] Preferably, sliding grooves are provided inside the two fixed rods, and the sliding grooves are slidably connected to sliding rods, and a telescopic spring is sleeved on the upper part of the outer part of the sliding rod, and the two ends of the telescopic spring are respectively fixedly connected to the sliding grooves and the sliding rods, and positioning rings are fixedly installed on the bottom ends of the two groups of sliding rods, and positioning holes are symmetrically provided at the bottom of the positioning rings and the upper part of the outer side of the filter bag, and the positioning rod is connected through the positioning holes.

[0008] By adopting the above technical solution, the downward movement of the end cover can cause the sliding rod to slide in the sliding groove.

[0009] Preferably, a fixing frame is symmetrically installed at the bottom center of the cross, and a filter bucket is arranged below the two fixing frames, and the filter aperture of the filter bucket is slightly larger than the inner diameter of the through hole on the filter frame. At the same time, support rods are symmetrically installed inside the filter bucket, and fixing blocks are fixedly installed on the tops of the two support rods, and a rotating rod is fixedly installed between the two fixing blocks, and the rotating rod is rotatably connected to the two fixing frames.

[0010] By adopting the above technical solution, sharp impurities in wastewater can be filtered.

[0011] Preferably, a torsion spring is sleeved on one side of the two fixing frames outside the rotating rod, and one end of the torsion spring is fixedly connected to the fixing frame, and a connecting block is fixedly installed on the other end of the torsion spring, and the connecting block is fixedly connected to the rotating rod.

[0012] By adopting the above technical solution, the rotating rod can be reset after being rotated.

[0013] Preferably, a connecting rope is fixedly installed on the outside of the rotating rod between the two fixed frames, and the end of the connecting rope away from the rotating rod is fixedly connected to a fixed rod on one side, and support blocks are fixedly installed above the side where the two fixed frames are close to each other, and a guide wheel is rotatably connected between the two support blocks, and the connecting rope is rotatably connected to the guide wheel.

[0014] By adopting the above technical solution, the movement of the connecting rope can pull the rotating rod to rotate.

[0015] Preferably, an L-shaped frame is symmetrically installed on one side of the sliding rod, and a roller is rotatably connected above the two L-shaped frames, and the roller is rotatably connected to the connecting rope.

[0016] By adopting the above technical solution, the movement of the connecting rope is supported.

[0017] Preferably, the positioning ring is provided with movable grooves above the two groups of positioning holes, and the movable groove is slidably connected with a movable plate, and a limit rod is symmetrically installed on one side of the movable groove, and the movable plate is slidably connected to the limit rod, and a movable block is fixedly installed on one side of the movable plate, and an oblique groove is provided on one side of the movable block, and a column rod is slidably connected to the oblique groove, and moving blocks are fixedly installed on both ends of the column rod, and connecting rods are slidably connected to the inside of the two moving blocks, and the connecting rod is fixedly connected to the positioning ring, and arc rods are fixedly installed on the bottom of the two moving blocks, and a number of rubber strips are fixedly installed on the bottom of the arc rod.

[0018] By adopting the above technical solution, the filter bag fitted with the support ring can be expanded outward to improve the reliability of fixation.

[0019] Preferably, the fastening assembly includes two groups of fixing sleeves symmetrically installed on the outside of the end cover, and the fixing sleeves are slidably connected to a moving rod inside the fixing sleeves, and a support spring is sleeved on the upper outside of the moving rod, and both ends of the support spring are respectively fixedly connected to the moving rod and the fixing sleeve, and two groups of positioning blocks are symmetrically installed on the outside of the outer shell below the two groups of moving rods, and a vertical rod is fixedly installed between each group of two positioning blocks, and a moving plate is slidably connected to the outside of the two vertical rods, and a connecting hole is opened through one side of the top of the moving plate, and the moving rod is adaptably connected to the connecting hole, and a limiting nut is threadedly connected to the lower outside of the moving rod.

[0020] By adopting the above technical solution, the connection between the end cover and the shell can be tightened, thereby improving the reliability of the end cover installation.

[0021] Preferably, fixing parts are symmetrically installed on the outside of the shell and located above the two groups of movable plates, and a connecting shaft is rotatably connected between the two fixing parts, and a through groove is opened through the top of the movable plate and located below the connecting shaft, and a push rod is fixedly installed at the bottom center of the connecting shaft, and the two ends of the connecting shaft pass through two fixing parts respectively and are fixedly installed with cams on the outside, and a movable frame is rotatably connected to the outside of the shell and located below one side of the push rod, and a limiting strip is fixedly installed on the inner side of the movable frame, and a limiting groove is opened below one side of the push rod, and the limiting strip is engaged with the limiting groove.

[0022] By adopting the above technical solution, it is convenient to drive the moving rod to compress the support spring.

[0023] Compared with the prior art, the invention has the following beneficial effects: the bag filter with controllable filtration accuracy for environmental pollution prevention and control has a filtration assembly arranged inside the shell, so that when filtering wastewater, sharp impurities with large volume in the wastewater can be filtered, and the sharp impurities are prevented from entering the filter bag, scratching the filter bag, and affecting subsequent filtration operations, thereby improving practicality; 1. A filter assembly is arranged inside the outer shell. When installing the filter bag, the mounting rod on the support ring is inserted into the mounting hole to install the filter frame, and the filter bag is placed inside the filter frame. Then, the positioning hole on the filter bag can be sleeved on the outside of the positioning rod to preliminarily position the filter bag. Then, the support frame is rotated to make the end cover rotate to the top of the outer shell, and the screw rod is rotated to drive the end cover to descend so that the end cover fits with the outer shell. During the downward movement of the end cover, the positioning hole on the positioning ring is sleeved on the outside of the positioning rod. During the gradual downward movement of the end cover, the positioning ring fits with the filter bag and no longer moves, so that the fixing rod moves downward, and the sliding rod slides in the sliding groove and stretches the telescopic spring, which can provide downward pressure to the positioning ring to reliably fix the filter bag. During the downward movement of the end cover, the initial state of the filter bucket is inclined, and the connecting rope on the rotating rod is wrapped around the outside of the rotating rod part. As the end cover moves downward, the connecting rope can contact the roller between the L-shaped frames, and the connecting rope can be pushed to bend through the roller. After the bend, it slides on the guide wheel and can pull the rotating rod to rotate. After the rotating rod rotates, it drives the torsion spring to deform. After the end cover is fitted with the shell, the rotating rod rotates and drives the filter bucket to rotate to a horizontal state through the fixed block. Then, during the filtering work, the waste water enters the shell through the water inlet pipe and can be initially filtered through the filter bucket to prevent large particles from entering the filter bag, thereby avoiding damage to the filter bag. Many parts are made of corrosion-resistant materials. Later, when the end cover is disassembled to clean or replace the filter bag, the end cover is removed so that the positioning ring leaves the filter bag and the torsion spring recovers its deformation. At this time, the filter bucket can restore its tilted state, and the filtered impurities can be poured into the filter bag, which is convenient for subsequent centralized cleaning. Through the filtering assembly, when filtering the waste water, large sharp impurities in the waste water can be filtered to prevent sharp impurities from entering the filter bag, avoiding scratching the filter bag, and avoiding affecting subsequent filtering operations, thereby improving practicality. 2. When the positioning ring moves downward to fit the filter bag, the rubber strips at the bottom of the two groups of arc-shaped rods fit the filter bag. Then, as the positioning ring moves downward, the positioning rod is inserted into the positioning hole on the positioning ring, so that the positioning rod abuts against the movable plate. Then, the positioning ring moves downward to compress the rubber strip to produce deformation, and the movable plate moves upward. After the movable plate moves upward, it can drive the moving block to move upward. After the moving block moves upward, the sliding connection between the inclined groove and the column rod can push the column rod away from the positioning ring to move, and then drive the arc-shaped rod to move, so that the two groups of arc-shaped rods expand toward the outside of the positioning ring, so that the filter bag can be expanded, and then the filter bag can be reliably positioned. When the filter bag is subsequently disassembled, it is only necessary to disassemble the end cover. The installation and disassembly of the filter bag is very convenient. At the same time, it is convenient to select filter bags with different filtration accuracies according to the characteristics of the filtered wastewater, which can control the filtration accuracy and improve practicality. 3. After the end cover and the shell are fitted together, the moving plate can be moved up so that the moving rod passes through the connecting hole, and the limit nut can be screwed on the outside of the moving rod. Then the push rod can be rotated to drive the connecting shaft to rotate. After the connecting shaft rotates, the cam is driven to rotate downward, so that the cam can push the moving plate downward, and then the moving rod can be driven downward to compress the supporting spring. The rotation of the push rod can use the lever principle to compress the supporting spring with little effort. After the push rod is rotated, the movable frame can be rotated so that the movable frame is sleeved on the outside of the push rod. Then the push rod is released so that the limit strip on the movable frame and the limit strip on the push rod are aligned with each other under the action of the supporting spring. The groove is engaged to position the push rod, and the support spring is in a compressed state, so that the end cover can be tightly attached to the top of the shell, and the installation of the end cover can be tightened. When the end cover is subsequently disassembled, the push rod is slightly rotated inward to disengage the limit bar from the limit groove, so that the movable frame leaves the push rod. The push rod can be loosened, and the support spring can restore its deformation to remove the limit nut, and then the end cover can be lifted. The fastening assembly is convenient for the staff to tighten the connection between the end cover and the shell, which can ensure the sealing of the end cover installation and facilitate operation, thereby improving convenience and practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the housing of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure of the middle A area; Figure 4 It is a schematic diagram of the cross-sectional structure of the fixing rod of the present invention; Figure 5 It is a schematic diagram of the local structure of the filter assembly of the present invention; Figure 6 This is a schematic diagram of the filter bucket structure of the present invention; Figure 7 For the present invention Figure 6 Schematic diagram of the enlarged structure of the middle B area; Figure 8 For the present invention Figure 1 Schematic diagram of the enlarged structure of the middle C area; Fig. 9 It is a schematic diagram of the structure of the movable frame of the present invention.

[0025] In the figure: 1, shell; 101, support leg; 102, water inlet pipe; 103, water outlet pipe; 104, end cover; 105, fixed seat; 106, support frame; 107, threaded sleeve; 108, screw; 2, filter assembly; 201, fixing ring; 202, filter frame; 2021, support ring; 203, mounting hole; 204, mounting rod; 205, filter bag; 206, positioning rod; 207, cross; 208, fixing rod; 209, sliding groove; 210, sliding rod; 211, telescopic spring; 212, positioning ring; 213, positioning hole; 214, fixing frame; 215, filter bucket; 216, support rod; 217, fixing block; 218, rotating rod; 219, torsion spring; 220, connecting 221, connecting rope; 222, supporting block; 223, guide wheel; 224, L-shaped frame; 225, roller; 226, movable groove; 227, movable plate; 2271, limiting rod; 228, movable block; 229, inclined groove; 230, column; 231, moving block; 232, connecting rod; 233, arc rod; 234, rubber strip; 3, fastening assembly; 301, fixing sleeve; 302, moving rod; 303, supporting spring; 304, positioning block; 305, vertical rod; 306, moving plate; 307, connecting hole; 308, limiting nut; 309, fixing piece; 310, connecting shaft; 311, push rod; 312, cam; 313, movable frame; 314, limiting strip; 315, limiting groove. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-Figure 9 The present invention provides a technical solution: a bag filter with controllable filtration accuracy for environmental pollution prevention and control, comprising a housing 1, two sets of supporting legs 101 are symmetrically installed on the outside of the housing 1, and an inlet pipe 102 is connected through the upper side of the housing 1, and a water outlet pipe 103 is connected through the bottom of the housing 1, and an end cover 104 is provided on the top of the housing 1, and a sealing gasket is provided at the connection between the end cover 104 and the housing 1; Also includes: A fixing seat 105 is fixedly installed on one side of the housing 1. The top of the fixing seat 105 is rotatably connected to a support frame 106. A threaded sleeve 107 is fixedly installed on one end of the support frame 106. The inner thread of the threaded sleeve 107 is connected to a screw rod 108. The screw rod 108 is rotatably connected to the end cover 104. The filter assembly 2 is arranged inside the housing 1, and the filter assembly 2 includes a fixing ring 201; A fixing ring 201 is fixedly installed on the upper part of the inner part of the housing 1, a filter frame 202 is arranged inside the fixing ring 201, and a plurality of through holes are opened through the outer part of the filter frame 202, and a support ring 2021 is fixedly installed on the upper part of the outer part of the filter frame 202, and two groups of mounting holes 203 are symmetrically opened and closed through the top of the fixing ring 201, and two groups of mounting rods 204 are symmetrically installed on the bottom of the support ring 2021, and the mounting rods 204 are adapted to be connected with the mounting holes 203; The filter bag 205 is arranged inside the filter frame 202, two sets of positioning rods 206 are symmetrically installed on the top of the support ring 2021, and a cross 207 is fixedly installed inside the end cover 104, and two sets of fixing rods 208 are symmetrically installed at the bottom of the cross 207; The two fixed rods 208 are provided with sliding grooves 209 inside, and the sliding grooves 209 are slidably connected with sliding rods 210 inside, and telescopic springs 211 are sleeved on the upper part of the outer part of the sliding rods 210, and the two ends of the telescopic springs 211 are respectively fixedly connected with the sliding grooves 209 and the sliding rods 210, and the bottom ends of the two sets of sliding rods 210 are fixedly installed with positioning rings 212, and the bottom of the positioning rings 212 and the upper part of the outer side of the filter bag 205 are symmetrically provided with positioning holes 213, and the positioning rods 206 are connected with the positioning holes 213 through and through; A fixing frame 214 is symmetrically installed at the bottom center of the cross 207, and a filter bucket 215 is arranged below the two fixing frames 214, and the filter aperture of the filter bucket 215 is slightly larger than the inner diameter of the through hole on the filter frame 202, and support rods 216 are symmetrically installed inside the filter bucket 215, and a fixing block 217 is fixedly installed on the top of the two support rods 216, and a rotating rod 218 is fixedly installed between the two fixing blocks 217, and the rotating rod 218 is rotatably connected to the two fixing frames 214; A torsion spring 219 is sleeved on one side of the two fixing frames 214 outside the rotating rod 218, and one end of the torsion spring 219 is fixedly connected to the fixing frame 214, and a connecting block 220 is fixedly installed on the other end of the torsion spring 219, and the connecting block 220 is fixedly connected to the rotating rod 218; A connecting rope 221 is fixedly installed on the outside of the rotating rod 218 between the two fixing frames 214, and one end of the connecting rope 221 away from the rotating rod 218 is fixedly connected to one side of the fixing rod 208, and a supporting block 222 is fixedly installed on the upper side of the two fixing frames 214 close to each other, and a guide wheel 223 is rotatably connected between the two supporting blocks 222, and the connecting rope 221 is rotatably connected to the guide wheel 223; An L-shaped frame 224 is symmetrically installed on one side of the sliding rod 210 , and a roller 225 is rotatably connected between the two L-shaped frames 224 , and the roller 225 is rotatably connected to the connecting rope 221 .

[0028] Embodiment 1: Figure 1-Figure 7 As shown, when installing the filter bag 205, the installation rod 204 on the support ring 2021 is inserted into the installation hole 203 to install the filter frame 202, and the filter bag 205 is placed inside the filter frame 202. Then, the positioning hole 213 on the filter bag 205 can be sleeved on the outside of the positioning rod 206, and the filter bag 205 can be initially positioned. Then, the support frame 106 is rotated to make the end cover 104 rotate to the top of the shell 1, and the screw rod 108 is rotated to drive the end cover 104 to descend, so that the end cover 104 is fitted with the shell 1. During the downward movement of the end cover 104, the positioning hole 213 on the positioning ring 212 is sleeved on the positioning rod 2 06, during the gradual descent of the end cover 104, the positioning ring 212 is fitted with the filter bag 205 and no longer moves, so that the fixing rod 208 moves downward, and the sliding rod 210 slides in the sliding groove 209 and stretches the telescopic spring 211, which can provide downward pressure to the positioning ring 212 to reliably fix the filter bag 205. During the downward movement of the end cover 104, the filter bucket 215 is initially in an inclined state, and the connecting rope 221 on the rotating rod 218 is wrapped around the outside of the rotating rod 218. As the end cover 104 moves downward, the connecting rope 221 can contact the roller 225 between the L-shaped frame 224, and the roller 225 The connecting rope 221 can be pushed to bend. After the connecting rope 221 is bent, it slides on the guide wheel 223, and the rotating rod 218 can be pulled to rotate. After the rotating rod 218 rotates, the torsion spring 219 is deformed. After the end cover 104 is fitted with the shell 1, the rotating rod 218 rotates through the fixed block 217 to drive the filter bucket 215 to rotate to a horizontal state. After that, during the filtering work, the wastewater enters the shell 1 through the water inlet pipe 102, and can be initially filtered through the filter bucket 215, so that larger particles are prevented from entering the filter bag 205, and damage to the filter bag 205 can be avoided. In addition, many parts are adopted It is made of corrosion-resistant material. When the end cover 104 is subsequently disassembled to clean or replace the filter bag 205, the end cover 104 is removed to allow the positioning ring 212 to leave the filter bag 205, allowing the torsion spring 219 to restore its deformation. At this time, the filter bucket 215 can restore its tilted state, and the filtered impurities can be poured into the filter bag 205 to avoid subsequent centralized cleaning. Through the filter component 2, when filtering wastewater, large and sharp impurities in the wastewater can be filtered to avoid sharp impurities from entering the filter bag 205, avoid scratching the filter bag 205, avoid affecting subsequent filtering operations, and improve practicality.

[0029] A movable groove 226 is provided inside the positioning ring 212 above the two groups of positioning holes 213, and a movable plate 227 is slidably connected inside the movable groove 226, and a limiting rod 2271 is symmetrically installed on one side of the movable groove 226, and the movable plate 227 is slidably connected to the limiting rod 2271, and a movable block 228 is fixedly installed on one side of the movable plate 227, and an oblique groove 229 is provided on one side of the movable block 228, and a column 230 is slidably connected inside the oblique groove 229, and moving blocks 231 are fixedly installed on both ends of the column 230, and connecting rods 232 are slidably connected inside the two moving blocks 231, and the connecting rods 232 are fixedly connected to the positioning ring 212, and arc rods 233 are fixedly installed on the bottom of the two moving blocks 231, and a plurality of rubber strips 234 are fixedly installed on the bottom of the arc rod 233.

[0030] Embodiment 2: Figure 3 and Figure 5 As shown, when the positioning ring 212 moves downward to fit with the filter bag 205, the rubber strips 234 at the bottom of the two sets of arc-shaped rods 233 fit with the filter bag 205. Then, as the positioning ring 212 moves downward, the positioning rod 206 is inserted into the positioning hole 213 on the positioning ring 212, so that the positioning rod 206 abuts against the movable plate 227. Then, the positioning ring 212 moves downward to compress the rubber strip 234 to produce deformation, and the movable plate 227 moves upward. After the movable plate 227 moves upward, it can drive the moving block 231 to move upward. After the moving block 231 moves upward, it aligns with the column 227 through the inclined groove 229. The sliding connection of the rod 230 can push the column rod 230 to move away from the positioning ring 212, and then drive the arc rod 233 to move, so that the two groups of arc rods 233 can expand toward the outside of the positioning ring 212, so that the filter bag 205 can be expanded, and then the filter bag 205 can be reliably positioned. When the filter bag 205 is subsequently disassembled, it is only necessary to remove the end cover 104. The installation and disassembly of the filter bag 205 is very convenient. At the same time, it is convenient to select filter bags 205 with different filtration precisions according to the characteristics of the filtered wastewater, which can control the filtration precision and improve practicality.

[0031] The fastening components 3 are symmetrically arranged in two groups outside the connection between the housing 1 and the end cover 104; The fastening assembly 3 includes two groups of fixing sleeves 301 symmetrically mounted on the outside of the end cover 104, and the inside of the fixing sleeve 301 is slidably connected to the moving rod 302, and a support spring 303 is sleeved on the outside of the moving rod 302, and the two ends of the support spring 303 are respectively fixedly connected to the moving rod 302 and the fixing sleeve 301, and the outside of the housing 1 is symmetrically mounted below the two groups of moving rods 302, and a vertical rod 305 is fixedly mounted between each group of two positioning blocks 304, and the outside of the two vertical rods 305 is slidably connected to a moving plate 306, and a connecting hole 307 is opened through one side of the top of the moving plate 306, and the moving rod 302 is adaptively connected to the connecting hole 307, and the outer bottom of the moving rod 302 is threadedly connected to a limiting nut 308; On the outside of the shell 1, fixing parts 309 are symmetrically installed above the two groups of movable plates 306, and a connecting shaft 310 is rotatably connected between the two fixing parts 309, and a through groove is opened through the top of the movable plate 306 below the connecting shaft 310, and a push rod 311 is fixedly installed at the bottom center of the connecting shaft 310, and the two ends of the connecting shaft 310 pass through the two fixing parts 309 respectively and a cam 312 is fixedly installed on the outside, and a movable frame 313 is rotatably connected to the outside of the shell 1 below one side of the push rod 311, and a limiting strip 314 is fixedly installed on the inner side of the movable frame 313, and a limiting groove 315 is opened below one side of the push rod 311, and the limiting strip 314 is engaged and connected with the limiting groove 315.

[0032] Embodiment 3: Figure 1 and Figure 8-Figure 9As shown, after the end cover 104 is fitted with the housing 1, the movable plate 306 can be moved upward so that the movable rod 302 passes through the connecting hole 307, and the limiting nut 308 is screwed on the outside of the movable rod 302, and then the push rod 311 can be rotated to drive the connecting shaft 310 to rotate. After the connecting shaft 310 rotates, the cam 312 is driven to rotate downward, so that the cam 312 can push the movable plate 306 to move downward, and then the movable rod 302 can be driven to move downward to compress the support spring 303, and the rotation of the push rod 311 can use the lever principle to compress the support spring 303 with little effort. After the push rod 311 is rotated, the movable frame 313 can be rotated so that the movable frame 313 is sleeved on the outside of the push rod 311, and then the push rod 311 is released to make the limit bar 313 on the movable frame 313 under the action of the support spring 303. The locking nut 308 is then released to unlock the locking nut 308, and the locking nut 308 is released to unlock the locking nut 308. The locking nut 308 is then released to unlock the locking nut 308, and the locking nut 308 is released to unlock the locking nut 308. The locking nut 308 is then released to unlock the locking nut 308, and the locking nut 308 is released to unlock the locking nut 308. The locking nut 308 is then released to unlock the locking nut 308, and the locking nut 308 is released to unlock the locking nut 308.

[0033] Working principle: When using the bag filter with controllable filtration accuracy for environmental pollution prevention and control, first, according to Figure 1-Figure 9As shown, when installing the filter bag 205, the installation rod 204 on the support ring 2021 is inserted into the installation hole 203 to install the filter frame 202, and the filter bag 205 is placed inside the filter frame 202. Then, the positioning hole 213 on the filter bag 205 can be sleeved on the outside of the positioning rod 206 to preliminarily position the filter bag 205. Then, the support frame 106 is rotated to make the end cover 104 rotate to the top of the shell 1, and the screw 108 is rotated to drive the end cover 104 to descend, so that the end cover 104 is fitted with the shell 1. During the downward movement of the end cover 104, The positioning hole 213 on the positioning ring 212 is sleeved on the outside of the positioning rod 206. During the gradual descent of the end cover 104, the positioning ring 212 fits with the filter bag 205 and does not move, so that the fixing rod 208 moves downward, and the sliding rod 210 slides in the sliding groove 209 and stretches the telescopic spring 211, which can provide downward pressure to the positioning ring 212 to reliably fix the filter bag 205. During the downward movement of the end cover 104, the filter bucket 215 is initially in an inclined state, and the connecting rope 221 on the rotating rod 218 is wrapped around the outside of the rotating rod 218. As the end cover 104 moves downward, the filter bucket 215 is tilted. The downward movement of 104 allows the connecting rope 221 to contact the roller 225 between the L-shaped frame 224, and the connecting rope 221 can be pushed by the roller 225 to bend. After the connecting rope 221 is bent, it slides on the guide wheel 223, and can pull the rotating rod 218 to rotate. After the rotating rod 218 rotates, it drives the torsion spring 219 to deform. After the end cover 104 is attached to the shell 1, the rotating rod 218 rotates through the fixed block 217 to drive the filter bucket 215 to rotate to a horizontal state. Then, during the filtering work, the wastewater enters the shell 1 through the water inlet pipe 102 The filter hopper 215 can be used for preliminary filtration to prevent larger particles from entering the filter bag 205, thereby preventing the filter bag 205 from being damaged. Many parts are made of corrosion-resistant materials. When the end cover 104 is subsequently disassembled to clean or replace the filter bag 205, the end cover 104 is removed to allow the positioning ring 212 to leave the filter bag 205, so that the torsion spring 219 can restore its deformation. At this time, the filter hopper 215 can restore its tilted state, and the filtered impurities can be poured into the filter bag 205, which is convenient for subsequent centralized cleaning. When the positioning ring 212 moves downward to fit with the filter bag 205, the rubber strips 234 at the bottom of the two sets of arc-shaped rods 233 fit with the filter bag 205. Then, as the positioning ring 212 moves downward, the positioning rod 206 is inserted into the positioning hole 213 on the positioning ring 212, so that the positioning rod 206 abuts against the movable plate 227. Then, the positioning ring 212 moves downward to compress the rubber strip 234 to produce deformation, and the movable plate 227 moves upward. After the movable plate 227 moves upward, it can drive the moving block 231 to move upward. After the moving block 231 moves upward, the sliding connection between the inclined groove 229 and the column 230 can push the column 230 to move away from the positioning ring 212, thereby The arc rod 233 can be driven to move, so that the two sets of arc rods 233 can expand toward the outside of the positioning ring 212, so that the filter bag 205 can be expanded, and then the filter bag 205 can be reliably positioned. When the filter bag 205 is subsequently disassembled, it is only necessary to disassemble the end cover 104. The installation and disassembly of the filter bag 205 is very convenient. At the same time, it is convenient to select filter bags 205 with different filtering precisities according to the characteristics of the filtered wastewater, and the filtering precision can be controlled, which improves practicality. After the end cover 104 is fitted with the shell 1, the movable plate 306 can be moved up to allow the movable rod 302 to pass through the connecting hole 307, and the upper limit nut 308 can be screwed on the outside of the movable rod 302. The push rod 311 can be rotated to drive the connecting shaft 310 to rotate. After the connecting shaft 310 rotates, the cam 312 can be driven to rotate downward, so that the cam 312 can push the movable plate 306 to move downward, and then the movable rod 302 can be driven to move downward to compress the support spring 303. The rotation of the push rod 311 can use the lever principle to compress the support spring 303 with little effort. After the push rod 311 is rotated, the movable frame 313 can be rotated so that the movable frame 313 is sleeved on the outside of the push rod 311. Then, the push rod 311 is released. Under the action of the support spring 303, the limit strip 314 on the movable frame 313 is engaged with the limit groove 315 on the push rod 311, so that the push rod 311 can be positioned. The support spring 303 is in a compressed state, so that the end cover 104 can be tightly attached to the top of the shell 1, and the installation of the end cover 104 can be tightened. When the end cover 104 is subsequently disassembled, the push rod 311 is slightly rotated inward to disengage the limit bar 314 from the limit groove 315, so that the movable frame 313 leaves the push rod 311, and the push rod 311 can be loosened, and the support spring 303 can restore its deformation to remove the limit nut 308, and then the end cover 104 can be lifted. The fastening assembly 3 is convenient for the staff to tighten the connection between the end cover 104 and the shell 1, which can ensure the sealing of the installation of the end cover 104, facilitate operation, and improve convenience and practicality.

[0034] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0035] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A bag filter with controllable filtration accuracy for environmental pollution prevention and control, comprising a housing (1), two sets of supporting legs (101) being symmetrically mounted on the outside of the housing (1), a water inlet pipe (102) being connected through the top of one side of the housing (1), and a water outlet pipe (103) being connected through the bottom of the housing (1), an end cover (104) being arranged on the top of the housing (1), and a sealing gasket being arranged at the connection between the end cover (104) and the housing (1); It is characterized in that Also includes: A fixing seat (105) is fixedly mounted above one side of the housing (1); the top of the fixing seat (105) is rotatably connected to a support frame (106); one end of the support frame (106) is fixedly mounted with a threaded sleeve (107); the internal thread of the threaded sleeve (107) is connected to a screw rod (108); and the screw rod (108) is rotatably connected to the end cover (104); A filter assembly (2) is arranged inside the housing (1), the filter assembly (2) comprising a fixing ring (201); The fastening components (3) are symmetrically arranged in two groups outside the connection between the housing (1) and the end cover (104); A fixing ring (201) is fixedly mounted on the upper part of the inner part of the housing (1); a filter frame (202) is arranged inside the fixing ring (201); a plurality of through holes are opened through the outer part of the filter frame (202); a support ring (221) is fixedly mounted on the upper part of the outer part of the filter frame (202); two groups of mounting holes (203) are symmetrically opened and closed through the top of the fixing ring (201); two groups of mounting rods (204) are symmetrically mounted on the bottom of the support ring (2021); and the mounting rods (204) are adaptively connected to the mounting holes (203); The filter bag (205) is arranged inside the filter frame (202), two groups of positioning rods (206) are symmetrically installed on the top of the support ring (2021), a cross (207) is fixedly installed inside the end cover (104), and two groups of fixing rods (208) are symmetrically installed on the bottom of the cross (207); A fixing frame (214) is symmetrically mounted at the bottom center of the cross (207), and a filter bucket (215) is arranged below the two fixing frames (214), and a support rod (216) is symmetrically mounted inside the filter bucket (215), and a fixing block (217) is fixedly mounted on the top of each of the two supporting rods (216), and a rotating rod (218) is fixedly mounted between the two fixing blocks (217), and the rotating rod (218) is rotatably connected to the two fixing frames (214); A connecting rope (221) is fixedly installed on the outside of the rotating rod (218) between the two fixing frames (214), and one end of the connecting rope (221) away from the rotating rod (218) is fixedly connected to a fixing rod (208) on one side, and a supporting block (222) is fixedly installed above the side where the two fixing frames (214) are close to each other, and a guide wheel (223) is rotatably connected between the two supporting blocks (222), and the connecting rope (221) is rotatably connected to the guide wheel (223).

2. The bag filter with controllable filtration accuracy for environmental pollution prevention and control according to claim 1, characterized in that: The two fixed rods (208) are each provided with a sliding groove (209) inside, and the sliding groove (209) is slidably connected to a sliding rod (210), and a telescopic spring (211) is sleeved on the upper part of the outer part of the sliding rod (210), and the two ends of the telescopic spring (211) are respectively fixedly connected to the sliding groove (209) and the sliding rod (210), and a positioning ring (212) is fixedly installed at the bottom end of the two groups of sliding rods (210), and positioning holes (213) are symmetrically provided at the bottom of the positioning ring (212) and the upper part of the outer side of the filter bag (205), and the positioning rod (206) is connected through the positioning hole (213).

3. The bag filter with controllable filtration accuracy for environmental pollution prevention and control according to claim 1, characterized in that: A torsion spring (219) is sleeved on one side of the two fixing frames (214) outside the rotating rod (218), one end of the torsion spring (219) is fixedly connected to the fixing frame (214), and a connecting block (220) is fixedly installed on the other end of the torsion spring (219), and the connecting block (220) is fixedly connected to the rotating rod (218).

4. The bag filter with controllable filtration accuracy for environmental pollution prevention and control according to claim 2, characterized in that: An L-shaped frame (224) is symmetrically mounted on one side of the sliding rod (210), and a roller (225) is rotatably connected between the upper portions of the two L-shaped frames (224), and the roller (225) is rotatably connected to the connecting rope (221).

5. The bag filter with controllable filtration accuracy for environmental pollution prevention and control according to claim 2, characterized in that: The interior of the positioning ring (212) is provided with movable grooves (226) located above the two groups of positioning holes (213), and the interior of the movable groove (226) is slidably connected with a movable plate (227), and a limiting rod (2271) is symmetrically installed on one side of the interior of the movable groove (226), and the movable plate (227) is slidably connected to the limiting rod (2271), and a movable block (228) is fixedly installed on one side of the movable plate (227), and an inclined groove (228) is penetrated on one side of the movable block (228). 29), and a column (230) is slidably connected inside the inclined groove (229), and moving blocks (231) are fixedly installed at both ends of the column (230), and connecting rods (232) are slidably connected inside the two moving blocks (231), and the connecting rods (232) are fixedly connected to the positioning ring (212), and arc rods (233) are fixedly installed at the bottom of the two moving blocks (231), and a plurality of rubber strips (234) are fixedly installed at the bottom of the arc rod (233).

6. The bag filter with controllable filtration accuracy for environmental pollution prevention and control according to claim 1, characterized in that: The fastening assembly (3) comprises two groups of fixing sleeves (301) symmetrically mounted on the outside of the end cover (104), and the inside of the fixing sleeve (301) is slidably connected to a moving rod (302), and a support spring (303) is sleeved on the upper part of the outside of the moving rod (302), and the two ends of the support spring (303) are respectively fixedly connected to the moving rod (302) and the fixing sleeve (301), and two groups of positioning blocks (304) are symmetrically mounted on the outside of the housing (1) below the two groups of moving rods (302), and a vertical rod (305) is fixedly mounted between each group of two positioning blocks (304), and the outside of the two vertical rods (305) is slidably connected to a moving plate (306), and a connecting hole (307) is opened through one side of the top of the moving plate (306), and the moving rod (302) is adaptively connected to the connecting hole (307), and the outer bottom of the moving rod (302) is threadedly connected to a limiting nut (308).

7. The bag filter with controllable filtration accuracy for environmental pollution prevention and control according to claim 6, characterized in that: The outer part of the housing (1) is symmetrically mounted with fixing members (309) above the two groups of movable plates (306), and a connecting shaft (310) is rotatably connected between the two fixing members (309), and a through slot is provided through the top of the movable plate (306) below the connecting shaft (310), and a push rod (311) is fixedly mounted at the bottom center of the connecting shaft (310), and both ends of the connecting shaft (310) pass through the two fixing members (309) respectively and a cam (312) is fixedly mounted on the outer part, and a movable frame (313) is rotatably connected to the outer part of the housing (1) below one side of the push rod (311), and a limiting strip (314) is fixedly mounted on the inner side of the movable frame (313), and a limiting slot (315) is provided below one side of the push rod (311), and the limiting strip (314) is engaged and connected with the limiting slot (315).

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