An environmentally friendly, low-emission bag filter dust collector

Abstract

This invention discloses an environmentally friendly, low-emission bag filter dust collector, relating to the technical field of bag filter dust collectors. The dust collection box has several mounting seats evenly embedded at equal intervals at its top. An outer frame tube is threaded onto the outer side of the bottom of each mounting seat, and an inner frame tube is threaded onto the inner side of the bottom of each mounting seat. An outer bag is fitted onto the outer side of the outer frame tube, and an inner bag is embedded into the inner wall of the inner frame tube. Several through slots are formed at equal angles along the circumference at the top of the mounting seat corresponding to the position between the outer and inner frame tubes. This invention can construct a dual-channel dust collection path and a synchronous dust removal path. During dust collection, the dust collection pressure is monitored in real time, enabling automatic switching between the two paths. This indirectly achieves uninterrupted dust collection and continuous dust removal, improving the compatibility and stability between dust collection and dust removal operations, enhancing the dust collection effect, reducing the wear rate of the outer and inner bags during operation, extending their effective service life, and indirectly improving their endurance stability and working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bag dust collectors, and in particular to an environmentally friendly low-emission bag dust collector. Background Art

[0002] Bag dust collector is a dry dust filtering device, which is suitable for capturing fine, dry, non-fibrous dust. The filter bag is made of textile filter cloth or non-textile felt, and uses the filtering effect of fiber fabric to filter the dust-containing gas. When the dust-containing gas enters the bag dust collector, the large particles and high specific gravity dust settle down due to gravity and fall into the ash hopper. When the gas containing finer dust passes through the filter material, the dust is retained, so that the gas is purified.

[0003] However, the dust removal method of the bag dust collectors on the market is sluggish and rigid, and the connection between cleaning work and dust removal work is not stable enough, and it is impossible to achieve non-stop dust removal and uninterrupted cleaning. Not only does the cleaning work occupy the effective dust removal time, but it is also easy to cause low dust removal efficiency and poor dust removal effect due to untimely cleaning work. Moreover, the cleaning method is mostly high-pressure pulse type, which not only makes the cleaning unreliable, but also makes the bag easily damaged due to excessive pressure, which seriously affects the endurance stability of the dust removal work and reduces the effective service life of the bag. Summary of the invention

[0004] The present invention provides an environmentally friendly, low-emission bag dust collector, which can effectively solve the problems raised in the above background technology, such as the dull and rigid dust removal method of the bag dust collector currently on the market, the poor connection stability between the cleaning work and the dust removal work, and the inability to achieve non-stop dust removal and uninterrupted cleaning. Not only does the cleaning work occupy the effective dust removal time, but it is also easy to cause low dust removal efficiency and poor dust removal effect due to untimely cleaning work. Moreover, the cleaning method is mostly high-pressure pulse type, which not only makes the cleaning unreliable, but also makes the bag easily damaged due to excessive pressure, seriously affecting the endurance stability of the dust removal work and reducing the effective service life of the bag.

[0005] To achieve the above object, the present invention provides the following technical solution: an environmentally friendly low-emission bag dust collector, comprising a dust removal box, a dust collecting box is installed at the bottom of the dust removal box, a dust hopper is installed at the bottom of the dust collecting box, and a double-pass separation mechanism is installed at the top of the dust removal box;

[0006] The dual-pass separation mechanism includes a mounting seat;

[0007] The top of the dust removal box is evenly and equidistantly embedded with a plurality of mounting seats, an outer frame tube is threadedly installed on the outer side of the bottom end of the mounting seat, an inner frame tube is threadedly installed on the inner side of the bottom end of the mounting seat, an outer bag is sleeved on the outer side of the outer frame tube, an inner bag is embedded and installed on the inner wall of the inner frame tube, a plurality of through grooves are provided at equal angles along the circumferential direction at the top of the mounting seat corresponding to the position between the outer frame tube and the inner frame tube, a plurality of outer tubes are embedded and installed at equal angles along the circumferential direction at the edge of the top end of the mounting seat, an inner tube is embedded and slidably installed in the middle of the top end of the mounting seat, and the end of the inner tube extends into the inner side of the inner bag, and a ring groove seat is installed on the top end of the outer tube;

[0008] A guide box is installed at the top of the dust removal box, and the top of the guide box and the top of the dust removal box together form an exhaust chamber, and the mounting seat is located inside the exhaust chamber, an exhaust port is opened in the middle of the side end surface of the exhaust chamber, a partition is installed in the middle of the inner cavity of the guide box, and a dividing tube is installed at the bottom end of the partition corresponding to the position of the inner tube, an air inlet is opened in the middle of the side end surface of the dust removal box, and a flow exchange chamber is opened inside the dust removal box at the position corresponding to the air inlet, a slide is slidably installed inside the exchange chamber, and limit frames are installed on both sides of the slide inside the exchange chamber.

[0009] According to the above technical solution, a guide groove is provided in the middle of the side end surface of the slide, an outer flow groove is provided on one side of the side end surface of the converter chamber at the bottom position of the partition, and an inner flow groove is provided on the other side of the side end surface of the converter chamber at the top position of the partition, an outer through hole is provided at a corner on one side of the side end surface of the converter chamber corresponding to the position of the outer flow groove, and an inner through hole is provided at a corner on the other side of the side end surface of the converter chamber corresponding to the position of the inner flow groove, a top cover is installed on the top of the guide box, and the top cover and the guide box are combined to form an inflation chamber, and a strip board is installed in the middle of the top of the slide, and the strip board is slidably installed inside the inflation chamber.

[0010] According to the above technical solution, the outer bag, the inner bag and the mounting seat together form a ventilation cavity, the ventilation cavity is connected to the exhaust chamber through a through groove, and the material specifications of the outer bag and the inner bag are exactly the same.

[0011] According to the above technical scheme, an air distribution groove is opened on the outer curved surface of the outer tube at the position corresponding to the outer bag, a plurality of diversion grooves are opened at equal angles along the circumferential direction on the outer curved surface of the inner tube at the position corresponding to the inner bag, a clamping groove is opened at the bottom end of the guide box at the position corresponding to the ring groove seat, the clamping groove is matched with the ring groove seat, and the outer wall of the inner tube is matched with the inner wall of the partition tube.

[0012] According to the above technical solution, the partition divides the inner cavity of the guide box into an inner cavity and an outer cavity, and the inner cavity is located at the top of the outer cavity, the inner cavity is connected to the inner tube through a partition tube, the outer cavity is connected to the outer tube through an annular groove seat, the inner cavity is connected to the converter chamber through an inner flow groove and an inner through hole, and the outer cavity is connected to the converter chamber through an outer flow groove and an outer through hole.

[0013] According to the above technical solution, the interval between the two limit frames is equal to the sum of the lengths of the slide and the inner flow groove, the inner flow groove and the outer flow groove have exactly the same size specifications, and the difference between the guide groove length and the inner flow groove length is equal to the horizontal spacing between the inner flow groove and the outer flow groove.

[0014] According to the above technical solution, the effective force-bearing area of ​​the strip is equal to the effective force-bearing area of ​​the slide, the interior of the inflatable chamber is filled with clean air, pressure gauges are embedded in the middle of the two side end surfaces of the inflatable chamber, and an air valve is installed at the bottom of the inflatable chamber corresponding to the position of the pressure gauge.

[0015] According to the above technical solution, a support and protection mechanism is installed on the outside of the dust removal box, and the support and protection mechanism includes a current limiting box;

[0016] A flow limiting box is installed on the side end face of the flow guide box, a flow stabilizing box is installed on the top of the flow limiting box, an external through pipe is installed on the end of the exhaust port through a thread, a connecting pipe is symmetrically installed on the top edge of the flow stabilizing box, a connecting duct is installed on the side end face of the inflation chamber at the position corresponding to the connecting pipe, an air washing box is installed on the side end face of the dust collecting box, a long duct is symmetrically embedded and installed on the top edge of the air washing box, a short duct is embedded and installed on the top of the air washing box, and a filter box is installed on the top of the short duct;

[0017] A flow limiting frame is slidably installed inside the flow stabilizing box, a guide port is opened in the middle of the bottom end of the flow stabilizing box, spacer ribs are installed at both sides of the flow limiting frame inside the flow stabilizing box, and a pressure plate is slidably installed inside the flow limiting box;

[0018] A drying box is installed on the other end face of the dust collecting box, a heating wire is installed inside the drying box, a guide pipe is installed on the top of the drying box, a temperature control box is installed in the middle of the side end face of the dust collecting box, a heat conduction pipe is installed inside the temperature control box, an air inlet pipe is installed on the end of the air inlet, refrigerant valves are installed on the top and bottom of the side end face of the temperature control box, and a flange pipe is installed on the bottom of the side end face of the drying box.

[0019] According to the above technical solution, a liquid replenishing valve is embedded and installed on the top of the side end surface of the gas washing box, the bottom end of the long conduit is lower than the horizontal plane where the liquid replenishing valve is located, and the bottom end of the short conduit is higher than the horizontal plane where the liquid replenishing valve is located;

[0020] The side end surface of the filter box is uniformly and evenly embedded with a plurality of filling boxes that are slidably installed. The inside of the filling boxes is filled with activated carbon, filter sponge and desiccant in sequence. The top of the side end surface of the filter box is provided with an exhaust groove.

[0021] According to the above technical solution, the flow guide pipe is connected to the air inlet pipe through a heat conduction pipe, the heat conduction pipe is spiral, the inflation chamber is connected to the flow stabilizing box through a connecting pipe and a connecting guide tube, the flow limiting box is connected to the exhaust port through an external through pipe, the flow limiting box is connected to the air washing box through a long guide tube, and the input end of the heating wire is electrically connected to the output end of the external power supply.

[0022] Compared with the prior art, the invention has the following beneficial effects: the invention has a scientific and reasonable structure and is safe and convenient to use;

[0023] 1. A double-pass separation mechanism is provided. Through the cooperation of the mounting seat, the outer frame tube, the inner frame tube, the outer bag, the inner bag, the ventilation cavity, the through groove, the outer tube, the inner tube, the annular groove seat and the exhaust chamber, a double-channel dust removal passage and a synchronous dust cleaning passage can be constructed. Synchronous dust cleaning is realized during the dust removal process. While ensuring the stability and reliability of the dust cleaning work, the effective dust removal time occupied by the dust cleaning process is indirectly reduced, and the dust removal efficiency is greatly improved. With the flow limiting and guiding function of the guide box, the partition, the separation tube, the top cover, the exchange chamber, the limit frame, the slide plate, the strip plate, the guide groove, the inner flow groove, the outer flow groove, the outer through hole and the inner through hole, the dust removal pressure can be monitored in real time during the dust removal process. On the one hand, the automatic conversion of the double channels can be realized, and non-stop dust removal and uninterrupted dust cleaning can be indirectly realized, so that the connection between the dust removal work and the dust cleaning work is smoother and more stable, which greatly improves the compatibility and stability between the dust removal work and the dust cleaning work, and effectively improves the dust removal effect;

[0024] On the other hand, through the automatic conversion of the dual channels, combined with the pressure regulating function of the inflation chamber, pressure gauge and air valve, the pressure on the outer bag and the inner bag during the dust removal process can be accurately limited, changing the traditional high-pressure pulse cleaning to low-pressure continuous cleaning, effectively reducing the wear rate of the outer bag and the inner bag during the working process, greatly increasing their effective service life, and indirectly improving their endurance stability and work efficiency;

[0025] On the other hand, through the dynamic conversion of the dual channels, the real-time detection of the air permeability of the outer bag and the inner bag can be indirectly realized, and the switching frequency of the dual channels can be automatically adjusted according to the dust properties and dust concentration, which greatly improves the adaptability to different dust gases, expands the application range of the device, and improves the reliability and effectiveness of the dust removal work. Through the coordination of the inner cavity, the outer cavity, the annular groove seat, the partition pipe, the outer pipe, the inner pipe, the diversion groove and the air distribution groove, the dust gas can be centrally redistributed, so that the distribution of the dust gas inside the dust removal box is more uniform, and the performance of each outer bag and inner bag can be more fully utilized, which in disguise expands the effective contact area with the dust gas, expands the effective dust gas purification amount per unit time, and greatly improves the dust gas treatment efficiency.

[0026] 2. A support guarantee mechanism is provided. By cooperating with the flow limiting box and the flow stabilizing box, a stable pressure regulating space and flow limiting space are constructed, which greatly improves the convenience, reliability and stability of the air pressure regulation inside the dust removal box. With the flow limiting guiding function of the external pipe, connecting pipe, connecting pipe, long pipe, flow limiting frame, guide port, pressure plate and spacer rib, it can automatically adapt to the air pressure changes inside the dust removal box during the dust removal process, greatly improving the compatibility of the air inlet pressure and the exhaust port pressure, making the air pressure inside the dust removal box more stable, further improving the service life of the device, and effectively ensuring the pressure stability of the exhaust port. While improving the dust and gas flow stability, it realizes the support and improvement of the double-pass separation mechanism in disguise, indirectly improving the stability and reliability of dust removal and cleaning work;

[0027] Through the coordination of the air washing box, long duct, short duct, filter box, filling box and exhaust slot, the dust gas can be further filtered, separated and dried to achieve triple purification of the dust gas, greatly improving the cleanliness of the dust gas after treatment, greatly reducing the emission of dust impurities, effectively avoiding the secondary pollution to the external atmospheric environment, and greatly improving environmental protection;

[0028] Through the coordination of flange pipes, drying boxes and electric heating wires, the dust gas can be dried before dust removal, effectively preventing dust from sticking and compacting during the dust removal process, greatly reducing the difficulty of dust separation, making the dust removal work smoother and more stable, and indirectly improving the dust removal efficiency and effect, while reducing the probability of device blockage and damage during the dust removal process. Through the coordination of flow guide pipes, temperature control boxes, heat conduction pipes, air inlet pipes and refrigerant valves, the dust gas temperature can be limited, making the dust gas temperature more stable during the dust removal process, making the dust removal efficiency and dust removal quality more balanced and stable, and avoiding damage to the device caused by temperature fluctuations, thereby increasing the effective service life of the device.

[0029] To sum up, the bag dust collector can indirectly realize non-stop dust removal and uninterrupted cleaning through dual-channel conversion, which greatly improves the effective time ratio of dust removal and cleaning work, makes the cleaning work more effective and reliable, makes the dust removal process more efficient and stable, realizes multiple purification of dust and gas, improves the stability of dust removal pressure, reduces the air pressure borne by the device during the dust removal process, improves the endurance stability of the device, and increases the effective service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0031] In the attached picture:

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the installation structure of the current limiting box of the present invention;

[0034] Figure 3 is a partial exploded view of the present invention;

[0035] Figure 4 It is a schematic diagram of the structure of the double-pass separation mechanism of the present invention;

[0036] Figure 5 It is a partial exploded view of the double-pass separation mechanism of the present invention;

[0037] Figure 6 It is a schematic diagram of the top cover installation structure of the present invention;

[0038] Figure 7 It is a schematic diagram of the installation structure of the separator tube of the present invention;

[0039] Figure 8 It is a schematic diagram of the installation structure of the skateboard of the present invention;

[0040] Fig. 9 It is a schematic diagram of the structure of the supporting and guaranteeing mechanism of the present invention;

[0041] Fig.10 It is a schematic diagram of the installation structure of the temperature control box of the present invention;

[0042] Numbers in the figure: 1, dust box; 101, air inlet; 102, exhaust port; 103, dust box; 104, dust hopper;

[0043] 2. Double-pass separation mechanism; 201. Mounting seat; 202. Outer frame tube; 203. Inner frame tube; 204. Outer bag; 205. Inner bag; 206. Through groove; 207. Outer tube; 208. Inner tube; 209. Ring groove seat; 210. Guide box; 211. Baffle; 212. Separation tube; 213. Converter chamber; 214. Limiting frame; 215. Slide plate; 216. Guide groove; 217. Inner flow groove; 218. Outer flow groove; 219. Outer through hole; 220. Inner through hole; 221. Top cover; 222. Strip plate;

[0044] 2061, ventilation cavity; 2071, air distribution groove; 2081, diverter groove; 2091, card slot; 2101, exhaust chamber; 2102, inner cavity; 2103, outer cavity; 2211, inflation chamber; 2212, pressure gauge; 2213, air valve;

[0045] 3. Supporting and guarantee mechanism; 301. Current limiting box; 302. Flow stabilizing box; 303. External communication pipe; 304. Connecting pipe; 305. Air washing box; 306. Long conduit; 307. Short conduit; 308. Filter box; 309. Current limiting frame; 310. Guide port; 311. Press plate; 312. Spacer rib; 313. Drying box; 314. Heating wire; 315. Flow guide pipe; 316. Temperature control box; 317. Heat conduction pipe; 318. Inlet pipe; 319. Refrigerant valve; 320. Flange pipe; 321. Connecting conduit;

[0046] 3051, liquid replenishing valve; 3081, filling box; 3082, exhaust groove. DETAILED DESCRIPTION

[0047] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0048] Example: Figure 1-10 As shown, the present invention provides a technical solution, an environmentally friendly low-emission bag dust collector, comprising a dust box 1, a dust collecting box 103 is installed at the bottom of the dust box 1, a dust hopper 104 is installed at the bottom of the dust collecting box 103, and a double-pass separation mechanism 2 is installed at the top of the dust box 1;

[0049] The double-pass separation mechanism 2 includes a mounting seat 201, an outer frame tube 202, an inner frame tube 203, an outer bag 204, an inner bag 205, a through groove 206, an outer tube 207, an inner tube 208, an annular groove seat 209, a flow guide box 210, a partition plate 211, a partition tube 212, a flow exchange chamber 213, a limit frame 214, a slide plate 215, a guide groove 216, an inner flow groove 217, an outer flow groove 218, an outer through hole 219, an inner through hole 220, a top cover 221, a strip plate 222, a ventilation cavity 2061, an air distribution groove 2071, a diverter groove 2081, a clamping groove 2091, an exhaust chamber 2101, an inner through cavity 2102, an outer through cavity 2103, an inflatable chamber 2211, a pressure gauge 2212 and an air valve 2213;

[0050] A plurality of mounting seats 201 are evenly embedded and installed at the top of the dust removal box 1, an outer frame tube 202 is installed on the outer side of the bottom of the mounting seat 201 through a thread, an inner frame tube 203 is installed on the inner side of the bottom of the mounting seat 201 through a thread, an outer bag 204 is sleeved on the outer side of the outer frame tube 202, and an inner bag 205 is embedded and installed on the inner wall of the inner frame tube 203, and a plurality of through grooves 206 are opened at equal angles along the circumferential direction at the top of the mounting seat 201 corresponding to the position between the outer frame tube 202 and the inner frame tube 203, and the outer bag 204 and the inner bag 205 are installed on the inner wall of the inner frame tube 203. 5 and the mounting seat 201 are combined to form a ventilation cavity 2061, and the ventilation cavity 2061 is connected to the exhaust chamber 2101 through the through groove 206. The material specifications of the outer bag 204 and the inner bag 205 are exactly the same, so as to construct a double-channel dust removal passage. A plurality of outer tubes 207 are embedded and installed at equal angles along the circumferential direction at the top edge of the mounting seat 201, and an inner tube 208 is embedded and slidably installed in the middle of the top of the mounting seat 201, and the end of the inner tube 208 extends into the inner side of the inner bag 205, and a ring groove seat 209 is installed at the top of the outer tube 207;

[0051] A guide box 210 is installed at the top of the dust removal box 1. The top of the guide box 210 and the top of the dust removal box 1 are enclosed to form an exhaust chamber 2101. The mounting seat 201 is located inside the exhaust chamber 2101. An exhaust port 102 is opened in the middle of the side end surface of the exhaust chamber 2101. A partition 211 is installed in the middle of the inner cavity of the guide box 210. A separation pipe 212 is installed at the bottom end of the partition 211 corresponding to the position of the inner pipe 208.

[0052] An air distribution groove 2071 is provided on the outer curved surface of the outer tube 207 at a position corresponding to the outer bag 204, a plurality of diverter grooves 2081 are provided at equal angles along the circumferential direction at a position corresponding to the inner bag 205, a clamping groove 2091 is provided at the bottom end of the guide box 210 at a position corresponding to the annular groove seat 209, the clamping groove 2091 is matched with the annular groove seat 209, the outer wall of the inner tube 208 is matched with the inner wall of the separation tube 212, so as to divert and guide the dust gas, an air inlet 101 is provided in the middle of the side end face of the dust removal box 1, a flow conversion chamber 213 is provided inside the dust removal box 1 at a position corresponding to the air inlet 101, a slide plate 215 is slidably installed inside the flow conversion chamber 213, and limit frames 214 are installed on both sides of the slide plate 215 inside the flow conversion chamber 213;

[0053] A guide groove 216 is provided in the middle of the side end face of the slide plate 215, an outer flow groove 218 is provided at one side of the side end face of the converter chamber 213 at the bottom position of the partition plate 211, and an inner flow groove 217 is provided at the other side of the side end face of the converter chamber 213 at the top position of the partition plate 211. The interval between the two limit frames 214 is equal to the sum of the lengths of the slide plate 215 and the inner flow groove 217. The inner flow groove 217 and the outer flow groove 218 have exactly the same size specifications. The difference between the length of the guide groove 216 and the length of the inner flow groove 217 is equal to the horizontal spacing between the inner flow groove 217 and the outer flow groove 218, so as to improve the smoothness and stability of the dust removal work. An outer through hole 219 is provided at the corner of one side of the side end face of the converter chamber 213 corresponding to the position of the outer flow groove 218;

[0054] An inner through hole 220 is provided at the position of the inner flow groove 217 at the corner of the other side of the side end surface of the flow chamber 213. The partition plate 211 divides the inner cavity of the flow guide box 210 into an inner through cavity 2102 and an outer through cavity 2103. The inner through cavity 2102 is located at the top of the outer through cavity 2103. The inner through cavity 2102 is communicated with the inner tube 208 through the partition tube 212. The outer through cavity 2103 is communicated with the outer tube 207 through the annular groove seat 209. The inner through cavity 2102 is communicated with the flow chamber 213 through the inner flow groove 217 and the inner through hole 220. The outer through cavity 2103 is communicated with the flow chamber 213 through the outer flow groove 218 and the outer through hole 219, so as to indirectly realize non-stop dust removal and uninterrupted dust cleaning.

[0055] A top cover 221 is installed at the top of the guide box 210, and the top cover 221 and the guide box 210 together form an air-filled chamber 2211. A strip plate 222 is installed in the middle of the top of the slide plate 215, and the effective force-bearing area of ​​the strip plate 222 is equal to the effective force-bearing area of ​​the slide plate 215. The inside of the air-filled chamber 2211 is filled with clean air, and pressure gauges 2212 are embedded in the middle of the end surfaces on both sides of the air-filled chamber 2211. An air valve 2213 is installed at the bottom of the air-filled chamber 2211 at the position corresponding to the pressure gauge 2212, so as to limit the dust removal pressure threshold, and the strip plate 222 is slidably installed inside the air-filled chamber 2211.

[0056] A supporting and guaranteeing mechanism 3 is installed outside the dust removal box 1, and the supporting and guaranteeing mechanism 3 includes a flow limiting box 301, a flow stabilizing box 302, an external communication pipe 303, a connecting pipe 304, an air washing box 305, a long duct 306, a short duct 307, a filter box 308, a flow limiting frame 309, a guide port 310, a pressure plate 311, a spacer rib 312, a drying box 313, a heating wire 314, a flow guide pipe 315, a temperature control box 316, a heat conduction pipe 317, an air inlet pipe 318, a refrigerant valve 319, a flange pipe 320, a connecting pipe 321, a liquid replenishing valve 3051, a filling box 3081 and an exhaust groove 3082;

[0057] A flow limiting box 301 is installed on the side end face of the flow guide box 210, a flow stabilizing box 302 is installed on the top of the flow limiting box 301, an external through pipe 303 is installed on the end of the exhaust port 102 through a thread, a connecting pipe 304 is symmetrically installed on the top edge of the flow stabilizing box 302, a connecting pipe 321 is installed at the position of the connecting pipe 304 on the side end face of the inflation chamber 2211, a washing box 305 is installed on the side end face of the dust collecting box 103, a long pipe 306 is symmetrically embedded and installed on the top edge of the washing box 305, a short pipe 307 is embedded and installed on the top of the washing box 305, a liquid replenishing valve 3051 is embedded and installed on the top of the side end face of the washing box 305, the bottom end of the long pipe 306 is lower than the horizontal plane where the liquid replenishing valve 3051 is located, and the bottom end of the short pipe 307 is higher than the horizontal plane where the liquid replenishing valve 3051 is located, so as to further clean the airflow;

[0058] A filter box 308 is installed at the top of the short duct 307. A plurality of filling boxes 3081 are evenly and equidistantly embedded and slidably installed on the side end surface of the filter box 308. The filling boxes 3081 are filled with activated carbon, filter sponge and desiccant in sequence. An exhaust slot 3082 is provided on the top of the side end surface of the filter box 308 to achieve three-layer filtration of the airflow and improve the cleanliness of the airflow.

[0059] A flow limiting frame 309 is slidably installed inside the flow stabilizing box 302, a guide port 310 is opened in the middle of the bottom end of the flow stabilizing box 302, and spacer ribs 312 are installed at both sides of the flow limiting frame 309 inside the flow stabilizing box 302, a pressing plate 311 is slidably installed inside the flow limiting box 301, a drying box 313 is installed on the other end surface of the dust collecting box 103, a heating wire 314 is installed inside the drying box 313, a guide pipe 315 is installed on the top of the drying box 313, a temperature control box 316 is installed in the middle of the end surface of the dust collecting box 1, and a heat pipe 317 is installed inside the temperature control box 316;

[0060] An air inlet pipe 318 is installed at the end of the air inlet 101, and the guide pipe 315 is connected to the air inlet pipe 318 through a heat conduction pipe 317. The heat conduction pipe 317 is spiral, and the inflation chamber 2211 is connected to the flow stabilizing box 302 through a connecting pipe 304 and a connecting guide pipe 321. The flow limiting box 301 is connected to the exhaust port 102 through an external through pipe 303. The flow limiting box 301 is connected to the air washing box 305 through a long guide pipe 306. The input end of the heating wire 314 is electrically connected to the output end of the external power supply to construct a complete airflow path to ensure stable dust removal work. Refrigerant valves 319 are installed on the top and bottom of the side end face of the temperature control box 316, and a flange pipe 320 is installed on the bottom of the side end face of the drying box 313.

[0061] Working principle and use process of the present invention: When the environmentally friendly low-emission bag filter is actually used, firstly, according to the actual situation, the corresponding gas washing liquid is charged into the gas washing box 305 through the liquid replenishing valve 3051, so that the liquid level of the gas washing liquid is lower than the end of the short pipe 307 and the end of the long pipe 306 is submerged, the refrigerant valve 319 is connected to the external refrigerant pipeline, and the external charging equipment is used to charge the appropriate amount of clean gas into the charging chamber 2211 through the gas valve 2213;

[0062] In the process of charging clean air into the air chamber 2211, as the air pressure increases, the strip plate 222 will be displaced accordingly, and drag the slide plate 215 to move synchronously. According to the reading of the pressure gauge 2212, the air pressure on both sides of the strip plate 222 can be accurately regulated, so that when the air pressure on both sides of the strip plate 222 is the same, the slide plate 215 can just contact with the limit frame 214 on one side, and at this time, the guide groove 216 is only connected to one of the inner flow groove 217 and the outer flow groove 218. It is assumed here that the guide groove 216 is only connected to the inner flow groove 217 at this time, and this state is recorded as the initial state;

[0063] During the dust removal process, when the air pressure on the outer bag 204 and the inner bag 205 is greater than the air pressure on the strip plate 222 at this time, the dust gas flow path will change, that is, the air pressure on both sides of the strip plate 222 at this time is the maximum air pressure on the outer bag 204 and the inner bag 205 during the dust removal process. This air pressure is recorded as the reversing air pressure. According to the reading of the pressure gauge 2212, the pressure can be accurately controlled according to actual needs. Then, the external dust gas pipeline can be connected to the flange pipe 320, and the electric heating wire 314 can be started to perform dust removal.

[0064] In the initial state, the dust gas flows into the drying box 313 through the flange pipe 320, and after being dried, flows into the heat conduction pipe 317 through the guide pipe 315, and is then cooled by the refrigerant flowing into the temperature control box 316 through the refrigerant valve 319. Then, the dust gas will enter the exchange chamber 213 through the air inlet 101 through the air inlet pipe 318, and pass through the guide groove 216, and enter the inner through cavity 2102 through the inner flow groove 217, and then enter each inner tube 208 through the partition pipe 212. After being diverted and guided by each inner tube 208, it is ejected through the diverter groove 2081, and then the dust gas is filtered and purified by the inner bag 205, and then enters the ventilation cavity 2061, and flows into the exhaust chamber 2101 through the through groove 206, and then is discharged through the exhaust port 102. This flow path is recorded as the inner path;

[0065] As the dust removal work proceeds, the dust trapped by the inner bag 205 will be partially adsorbed on the surface of the inner bag 205, causing the air permeability of the inner bag 205 to gradually decrease, which will cause the air pressure inside the inner bag 205 to gradually increase. Under the conduction of the inner tube 208, the air pressure inside the inner cavity 2102 will also increase accordingly, and then under the conduction of the inner through hole 220, the air pressure at one end of the slide plate 215 will also increase accordingly. When the air pressure is greater than the reversing air pressure, it is sufficient to overcome the air pressure on the strip plate 222. At this time, under the action of the air pressure, the slide plate 215 will slide inside the reversing chamber 213 and eventually contact the limit frame 214 on the other side. At this time, the through groove 206 changes from being connected to the inner flow groove 217 to being connected to the outer flow groove 218.

[0066] At this time, the dust gas entering the exchange chamber 213 through the air inlet 101 will pass through the guide groove 216, enter the outer through cavity 2103 through the outer flow groove 218, and then enter each outer tube 207 through the annular groove seat 209. After the flow is diverted and guided by each outer tube 207, it is ejected through the air distribution groove 2071. Then, the dust gas is filtered and purified by the outer bag 204, enters the ventilation cavity 2061, and flows into the exhaust chamber 2101 through the through groove 206, and then is discharged through the exhaust port 102. This flow path is recorded as the outer path;

[0067] During this process, the airflow filtered and purified by the outer bag 204 will also continuously back-blow the inner bag 205, so that the dust adsorbed on the surface of the inner bag 205 will fall off. During this process, the surface of the outer bag 204 will gradually adsorb dust, and its air permeability will gradually decrease, causing the air pressure outside to rise.

[0068] Then, under the conduction effect of the outer tube 207, the air pressure inside the outer through cavity 2103 will rise synchronously, and under the conduction effect of the outer through hole 219, the other end of the slide plate 215 will bear the same air pressure. When the air pressure is greater than the reversing air pressure, the slide plate 215 will slide inside the reversing chamber 213 and make the through groove 206 conduct with the inner flow groove 217 again. At this time, the dust removal passage is converted into the inner passage again, thereby realizing double-passage alternating dust removal. When the inner passage is dusted, the outer bag 204 is cleaned, and when the outer passage is dusted, the inner bag 205 is cleaned, thereby indirectly realizing uninterrupted dust cleaning and non-stop dust removal.

[0069] In the above process, the airflow discharged through the exhaust port 102 will enter the flow limiting box 301 through the external communication pipe 303. At this time, under the conduction effect of the connecting pipe 304, during the dust removal process, the air pressure at both ends of the flow limiting frame 309 is the same as the air pressure at both sides of the strip plate 222. During the dust removal process, with the displacement of the strip plate 222, under the conduction effect of the connecting pipe 304, the air pressure at both ends of the flow limiting frame 309 will change accordingly, causing the flow limiting frame 309 to slide to the side with relatively lower pressure under the action of the air pressure, thereby causing the flow limiting frame 309 to block the connecting pipe 321 on the side with relatively higher pressure, and the guide port 310 is connected to the connecting pipe 321 on the side with relatively lower pressure, and then under the conduction effect of the guide port 310, the air pressure at the top of the pressure plate 311 is the same as the air pressure on the side with relatively lower pressure of the strip plate 222, ensuring that the air pressure is less than the internal air pressure of the dust removal box 1, while maintaining the internal air pressure of the dust removal box 1 relatively stable;

[0070] The airflow enters the flow limiting box 301 through the external pipe 303. When the airflow pressure is sufficient to overcome the air pressure on the top of the pressure plate 311, it will push the pressure plate 311 up, so that the long duct 306 and the external pipe 303 are connected. The airflow will flow into the washing box 305 through the long duct 306, and the washing liquid will be used to further clean the airflow. Then the airflow will enter the filter box 308 through the short duct 307. After further filtration and drying, it will be discharged into the atmosphere through the exhaust groove 3082, thereby realizing triple filtration of dust and gas, improving the cleanliness of dust and gas, improving environmental protection, and reducing the emission of harmful substances and other smoke impurities.

[0071] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmentally friendly low-emission bag dust collector, comprising a dust removal box (1), characterized in that: A dust collecting box (103) is installed at the bottom end of the dust removal box (1), a dust dropping hopper (104) is installed at the bottom end of the dust collection box (103), and a double-pass separation mechanism (2) is installed at the top end of the dust removal box (1); The dual-pass separation mechanism (2) comprises a mounting seat (201); The top of the dust removal box (1) is evenly and evenly embedded with a plurality of mounting seats (201), an outer frame tube (202) is threadedly installed on the outer side of the bottom of the mounting seat (201), an inner frame tube (203) is threadedly installed on the inner side of the bottom of the mounting seat (201), an outer bag (204) is sleeved on the outer side of the outer frame tube (202), an inner bag (205) is embedded and installed on the inner wall of the inner frame tube (203), a plurality of through grooves (206) are provided at equal angles along the circumferential direction at the top of the mounting seat (201) corresponding to the position between the outer frame tube (202) and the inner frame tube (203), a plurality of outer tubes (207) are embedded and installed at equal angles along the circumferential direction at the edge of the top of the mounting seat (201), an inner tube (208) is embedded and slidably installed in the middle of the top of the mounting seat (201), and the end of the inner tube (208) extends into the inner side of the inner bag (205), and a ring groove seat (209) is installed at the top of the outer tube (207); A guide box (210) is installed at the top of the dust removal box (1), the top of the guide box (210) and the top of the dust removal box (1) together form an exhaust chamber (2101), and the mounting seat (201) is located inside the exhaust chamber (2101), an exhaust port (102) is provided in the middle of the side end surface of the exhaust chamber (2101), a partition plate (211) is installed in the middle of the inner cavity of the guide box (210), a partition tube (212) is installed at the bottom end of the partition plate (211) at a position corresponding to the inner tube (208), an air inlet (101) is provided in the middle of the side end surface of the dust removal box (1), a flow conversion chamber (213) is provided inside the dust removal box (1) at a position corresponding to the air inlet (101), a slide plate (215) is slidably installed inside the flow conversion chamber (213), and limit frames (214) are installed on both sides of the slide plate (215) inside the flow conversion chamber (213); A guide groove (216) is provided in the middle of the side end surface of the slide plate (215); an outer flow groove (218) is provided on one side of the side end surface of the converter chamber (213) at the bottom position of the partition plate (211); an inner flow groove (217) is provided on the other side of the side end surface of the converter chamber (213) at the top position of the partition plate (211); and an outer through hole (217) is provided at a corner of one side of the side end surface of the converter chamber (213) at a position corresponding to the outer flow groove (218). 9), an inner through hole (220) is provided at a position corresponding to the inner flow groove (217) at the corner of the other side of the side end surface of the flow conversion chamber (213), a top cover (221) is installed at the top end of the flow guide box (210), and the top cover (221) and the flow guide box (210) are combined to form an air-filled chamber (2211), and a strip plate (222) is installed at the middle of the top end of the slide plate (215), and the strip plate (222) is slidably installed inside the air-filled chamber (2211); The partition plate (211) divides the inner cavity of the flow guide box (210) into an inner through cavity (2102) and an outer through cavity (2103), and the inner through cavity (2102) is located at the top of the outer through cavity (2103); the inner through cavity (2102) is in communication with the inner tube (208) via the partition tube (212); the outer through cavity (2103) is in communication with the outer tube (207) via the annular groove seat (209); the inner through cavity (2102) is in communication with the flow exchange chamber (213) via the inner flow groove (217) and the inner through hole (220); and the outer through cavity (2103) is in communication with the flow exchange chamber (213) via the outer flow groove (218) and the outer through hole (219); The effective force-bearing area of ​​the strip plate (222) is equal to the effective force-bearing area of ​​the slide plate (215); the interior of the inflatable chamber (2211) is filled with clean air; pressure gauges (2212) are embedded in the middle of both side end surfaces of the inflatable chamber (2211); and an air valve (2213) is installed at the bottom of the inflatable chamber (2211) at a position corresponding to the pressure gauge (2212).

2. The environmentally friendly low-emission bag filter according to claim 1 is characterized in that: The outer bag (204), the inner bag (205) and the mounting seat (201) together form a ventilation cavity (2061); the ventilation cavity (2061) is connected to the exhaust chamber (2101) via the through slot (206); the outer bag (204) and the inner bag (205) have completely the same material specifications.

3. The environmentally friendly low-emission bag filter according to claim 1 is characterized in that: An air distribution groove (2071) is provided on the outer curved surface of the outer tube (207) at a position corresponding to the outer bag (204); a plurality of flow distribution grooves (2081) are provided at equal angles along the circumferential direction at a position corresponding to the inner bag (205); a clamping groove (2091) is provided at the bottom end of the flow guide box (210) at a position corresponding to the annular groove seat (209); the clamping groove (2091) is matched with the annular groove seat (209); and the outer wall of the inner tube (208) is matched with the inner wall of the separation tube (212).

4. The environmentally friendly low-emission bag filter according to claim 1 is characterized in that: The spacing between the two limit frames (214) is equal to the sum of the lengths of the slide plate (215) and the inner flow groove (217), the inner flow groove (217) and the outer flow groove (218) have completely the same size specifications, and the difference between the length of the guide groove (216) and the length of the inner flow groove (217) is equal to the horizontal spacing between the inner flow groove (217) and the outer flow groove (218).

5. The environmentally friendly low-emission bag filter according to claim 1 is characterized in that: A supporting and securing mechanism (3) is installed outside the dust removal box (1), and the supporting and securing mechanism (3) comprises a current limiting box (301); A flow limiting box (301) is installed on the side end surface of the flow guide box (210), a flow stabilizing box (302) is installed on the top of the flow limiting box (301), an external through pipe (303) is installed on the end of the exhaust port (102) through a thread, a connecting pipe (304) is symmetrically installed on the top edge of the flow stabilizing box (302), a connecting pipe (321) is installed on the side end surface of the inflation chamber (2211) at a position corresponding to the connecting pipe (304), an air washing box (305) is installed on the side end surface of the dust collecting box (103), a long pipe (306) is symmetrically embedded and installed on the top edge of the air washing box (305), a short pipe (307) is embedded and installed on the top of the air washing box (305), and a filter box (308) is installed on the top of the short pipe (307); A flow limiting frame (309) is slidably mounted inside the flow stabilizing box (302), a guide opening (310) is provided in the middle of the bottom end of the flow stabilizing box (302), spacer ribs (312) are mounted inside the flow stabilizing box (302) at positions on both sides of the flow limiting frame (309), and a pressure plate (311) is slidably mounted inside the flow limiting box (301); A drying box (313) is installed on the other side end face of the dust collecting box (103), a heating wire (314) is installed inside the drying box (313), a flow guide tube (315) is installed on the top of the drying box (313), a temperature control box (316) is installed in the middle of the side end face of the dust collecting box (1), a heat conduction tube (317) is installed inside the temperature control box (316), an air intake tube (318) is installed at the end of the air inlet (101), a refrigerant valve (319) is installed on the top and bottom of the side end face of the temperature control box (316), and a flange tube (320) is installed on the bottom of the side end face of the drying box (313).

6. The environmentally friendly low-emission bag filter according to claim 5, characterized in that: A liquid replenishing valve (3051) is embedded and installed on the top of the side end surface of the gas washing box (305), the bottom end of the long conduit (306) is lower than the horizontal plane where the liquid replenishing valve (3051) is located, and the bottom end of the short conduit (307) is higher than the horizontal plane where the liquid replenishing valve (3051) is located; A plurality of filling boxes (3081) are evenly and equidistantly embedded and slidably mounted on the side end surface of the filter box (308), the inside of the filling boxes (3081) being filled with activated carbon, filter sponge and desiccant in sequence, and an exhaust groove (3082) is provided on the top of the side end surface of the filter box (308).

7. The environmentally friendly low-emission bag filter according to claim 5, characterized in that: The flow guide pipe (315) is connected to the air inlet pipe (318) via a heat conduction pipe (317); the heat conduction pipe (317) is spiral-shaped; the air filling chamber (2211) is connected to the flow stabilizing box (302) via a connecting pipe (304) and a connecting pipe (321); the flow limiting box (301) is connected to the exhaust port (102) via an external pipe (303); the flow limiting box (301) is connected to the air washing box (305) via a long pipe (306); and the input end of the heating wire (314) is electrically connected to the output end of an external power supply.

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