CN115301020B - Smoke dust filtering device for waste heat recovery - Google Patents
Smoke dust filtering device for waste heat recovery Download PDFInfo
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- CN115301020B CN115301020B CN202211239623.5A CN202211239623A CN115301020B CN 115301020 B CN115301020 B CN 115301020B CN 202211239623 A CN202211239623 A CN 202211239623A CN 115301020 B CN115301020 B CN 115301020B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/72—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with backwash arms, shoes or nozzles
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Abstract
The invention relates to the field of filtering and dust removing, in particular to a smoke dust filtering device for waste heat recovery, which comprises a shell, a piston rod and a filtering mechanism, wherein the bottom of the shell is provided with an air inlet, the side wall of the shell is provided with an air outlet, and the filtering mechanism divides the interior of the shell into a first cavity and a second cavity; when the piston rod moves upwards, the smoke is filtered by the filtering mechanism from the air inlet and then pumped to the first chamber, and when the piston rod moves downwards, part of the smoke is discharged from the air outlet, and part of the smoke enters the second chamber through the filtering mechanism, so that the filtering mechanism is backflushed and cleaned; still be provided with telescopic baffle in the shell, telescopic baffle separates into the second cavity and filters the cavity and adjust the cavity, and filtering mechanism is located and filters the cavity, and when the gas of the first cavity of piston rod downstream extrusion was strained a section of thick bamboo and is carried out the recoil, through telescopic baffle's removal increase the volume of filtering the cavity, the gas that makes first cavity gets into more easily and filters the cavity more, and then improves the recoil effect to straining a section of thick bamboo.
Description
Technical Field
The invention relates to the field of filtering and dust removal, in particular to a smoke dust filtering device for waste heat recovery.
Background
In the prior art, the filter screen can be cleaned in many ways, for example, a chinese patent with an authority publication No. CN109806682B discloses a smoke particle filtering device, which uses an intermittent air suction pump of a diaphragm to continuously suck, filter and discharge dust, and suck water in the air suction process, and spray water to flush the outer surface of a filter cartridge in the air pumping process. Although this kind of mode can realize the cleanness to the filter screen, can lead to the flue gas temperature to reduce, be unfavorable for cleaning the filter screen of filtering high temperature waste gas.
Disclosure of Invention
The inventor finds that the filter screen can be cleaned well by backflushing the filter screen with filtered gas during pumping, the temperature of smoke is not affected, and most of gas is discharged during pumping, so that the backflushing effect on the filter screen is weakened.
The invention provides a smoke dust filtering device for waste heat recovery, which aims to solve the problem of weak backflushing effect when gas is used for backflushing a filter screen.
The smoke dust filtering device for waste heat recovery adopts the following technical scheme:
a smoke dust filtering device for waste heat recovery comprises a shell, a piston rod and a filtering mechanism, wherein the shell is vertically arranged, the bottom of the shell is provided with an air inlet, the side wall of the shell is provided with an air outlet, the air inlet is provided with a first one-way valve allowing air to enter the shell, and the air outlet is provided with a second one-way valve allowing air to be discharged from the shell; the filtering mechanism is arranged in the shell and divides the interior of the shell into a first cavity and a second cavity, the air inlet is communicated with the second cavity, the air outlet is communicated with the first cavity, and the second one-way valve enables the air outlet to be opened when the air pressure in the first cavity is increased to a preset value; the piston rod is slidably arranged in the first chamber and slides up and down under the driving of the external driving element, when the piston rod moves upwards, the smoke is filtered by the filtering mechanism from the air inlet and then is pumped into the first chamber, when the piston rod moves downwards, the air in the first chamber and the air in the second chamber are extruded, and when the air pressure in the first chamber rises to a preset value, the smoke is discharged from the air outlet; the shell is internally provided with a telescopic baffle which is slidably arranged in the second cavity and divides the second cavity into a filtering cavity and a regulating cavity, the filtering mechanism is positioned in the filtering cavity, and the filtering mechanism moves upwards for a preset distance under the suction action of the upward movement of the piston rod after being blocked to a preset degree; after the filtering mechanism moves upwards for a preset distance, and the piston rod moves downwards for exhausting, smoke in the first cavity firstly enters the filtering cavity and pushes the telescopic baffle to slide so that the adjusting cavity contracts to the limit, then air pressure in the first cavity is increased and exhausted from the air outlet, and the smoke in the first cavity can enter the filtering cavity and backflush the filtering mechanism.
Furthermore, the filtering mechanism comprises a filtering component, a damping component, an elastic stop block and a mounting plate, the filtering component comprises a sliding plate, a filter cylinder and a collecting hopper, the sliding plate is mounted in the shell in a vertically sliding mode and divides the interior of the shell into a first cavity and a second cavity, the first cavity is located above the sliding plate, and the second cavity is located below the sliding plate; the filter cylinder is fixed on the lower side of the sliding plate, the interior of the filter cylinder penetrates through the sliding plate to be communicated with the first chamber, the bottom of the filter cylinder is plugged, and the peripheral wall of the filter cylinder is provided with filter holes; the collecting hopper is fixed below the filter cylinder and is used for collecting dust falling from the circumferential wall of the filter cylinder in a back-flushing manner; the mounting plate extends horizontally, is positioned at the lower side of the sliding plate and is fixedly connected with the sliding plate, and is provided with a vertical groove extending vertically and a horizontal groove extending horizontally; the two ends of the transverse groove are respectively a head end and a tail end, and the lower end of the vertical groove is communicated with the head end of the transverse groove; the upper end of the telescopic baffle is positioned at the upper end of the vertical groove in an initial state, the telescopic baffle is vertically arranged and can be horizontally and slidably installed in the shell, and the telescopic baffle, the installation plate and the shell enclose a regulating chamber, the regulating chamber is hermetically separated from the filtering chamber, and the regulating chamber is communicated with the outside of the shell; after the filter cylinder is blocked to a preset degree, the filter cylinder and the sliding plate move upwards for a preset distance under the suction action of the upward movement of the piston rod, so that the upper end of the telescopic baffle plate relatively slides to the lower end of the vertical groove, in the process of downward movement and exhaust of the rear piston rod, the smoke in the first cavity enters the second cavity and pushes the telescopic baffle plate to slide along the transverse groove until the telescopic baffle plate slides to the tail end of the transverse groove, and the cavity is regulated to be contracted to the limit; in an initial state, the elastic stop block is positioned on the upper side of the sliding plate and used for preventing the sliding plate from moving upwards until the filter cartridge is blocked to a preset degree, and the filter cartridge and the sliding plate move upwards beyond the elastic stop block under the suction action of the upward movement of the piston rod; the damping assembly increases the resistance to downward movement of the glide plate.
Furthermore, the damping assembly comprises a damping cylinder, a push rod, a separating ring, a communicating cylinder and a plugging plate, the damping cylinder is positioned in the second chamber and is fixed on the shell, and hydraulic oil is filled in the damping cylinder; the separating ring can be arranged in the damping cylinder in a vertically sliding mode, the communicating cylinder is vertically arranged and fixed on the lower side of the separating ring, the separating ring and the communicating cylinder divide the interior of the damping cylinder into a third chamber and a fourth chamber, the third chamber is located above the separating ring, and the fourth chamber is located below the separating ring; the ejector rod is arranged in the damping cylinder in a vertically sliding manner, the upper end of the ejector rod is fixedly connected with the sliding plate, and the lower end of the ejector rod is fixedly connected with the communicating cylinder; the upper end of the communicating cylinder is opened and communicated with the third chamber, and a plurality of through holes for communicating the third chamber with the fourth chamber are formed in the peripheral wall of the communicating cylinder; the inner peripheral wall of the communicating cylinder is provided with a first boss and a second boss, the first boss is positioned above the second boss, the first boss is positioned in the middle of the through hole, and the second boss is positioned at the bottom of the through hole; the plugging plate can slide up and down between the first boss and the second boss and is in sealing contact with the inner wall of the communicating cylinder, and the plugging plate plugs the bottom of the communicating cylinder; when the push rod moves upwards along with the sliding plate, the separating ring and the communicating cylinder are driven to move upwards synchronously, and the plugging plate is pushed by hydraulic oil in the third chamber to abut against the upper side of the second boss; when the push rod moves downwards along with the sliding plate, the separating ring and the communicating cylinder are driven to synchronously move downwards, and the plugging plate is abutted against the lower side of the first boss under the pushing and extruding of hydraulic oil in the fourth chamber.
Further, the filtering mechanism further comprises a return spring, the return spring vertically extends, one end of the return spring is connected with the sliding plate, the other end of the return spring is connected with the shell, and the return spring stores force when the sliding plate moves upwards.
Furthermore, the collecting hopper is of a funnel shape with a large upper end, a small lower end and an upward opening, and the outer side surface of the collecting hopper is a smooth arc-shaped surface.
Further, be provided with the elastic component between retractable baffle and the shell, open at the gas outlet and lead to first cavity and second cavity and the outside intercommunication of shell after, the elastic component impels retractable baffle to remove to the head end of cross slot along the cross slot.
Furthermore, the shell, the piston rod and the filtering mechanism form one filtering unit, the number of the filtering units is two, and when the piston rod of one filtering unit moves downwards for exhausting, the piston rod of the other filtering unit moves upwards for exhausting, so that the air inlet and the air exhaust of the two filtering units are continuously carried out.
The invention has the beneficial effects that: according to the smoke dust filtering device for waste heat recovery, when the piston rod moves downwards to extrude gas in the first chamber to backflush the filter cylinder, the volume of the filtering chamber is increased through the movement of the telescopic baffle plate, so that the gas in the first chamber can enter the filtering chamber to backflush the filtering mechanism; the filtered flue gas is used for back flushing the filtering mechanism, an external cleaning mechanism is not needed, a good back flushing effect can be obtained, and the temperature of the flue gas is not influenced; and the larger the blockage degree of the filtering mechanism is, the larger the preset distance of upward movement under the suction action of the piston rod is, the longer the telescopic baffle is stretched, the larger the adjusting chamber is, the more the volume of the filtering chamber is increased when the telescopic baffle moves, and the better the backflushing effect on the filtering mechanism is.
Furthermore, by arranging the two filtering units and enabling the piston rods of the two filtering units to move up and down alternately, the filtered smoke is discharged from the air outlets of the two filtering units alternately, so that the filtering efficiency is improved, and the smoke can be continuously output.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of an overall structure of an embodiment of a soot filtering device for waste heat recovery according to the present invention;
FIG. 2 is a side view of the overall structure of an embodiment of the smoke dust filtering device for waste heat recovery according to the present invention;
FIG. 3 isbase:Sub>A sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged schematic view at X in FIG. 3;
FIG. 5 is a front view of the overall structure of an embodiment of a smoke and dust filtering device for waste heat recovery according to the present invention;
FIG. 6 is a sectional view taken along line B-B of FIG. 5;
FIG. 7 is a front view of a damper assembly in an embodiment of a flue dust filter for heat recovery in accordance with the present invention;
FIG. 8 is a cross-sectional view taken along line C-C of FIG. 7;
FIG. 9 is a partial schematic structural view of a damper assembly in an embodiment of a soot filter device for heat recovery according to the present invention;
FIG. 10 is a schematic view of the internal structure of the housing of the smoke filter for waste heat recovery according to the embodiment of the present invention;
FIG. 11 is a schematic view of a filter assembly of an embodiment of a soot filter device for heat recovery according to the present invention;
in the figure: 100. a housing; 110. an air inlet; 120. an air outlet; 130. a first check valve; 140. a second one-way valve; 150. a telescopic baffle; 200. a piston rod; 210. a rod portion; 220. a plate portion; 300. a filtering mechanism; 310. a filter assembly; 311. a slide plate; 312. a filter cartridge; 313. a collecting hopper; 320. a damping assembly; 321. a damping cylinder; 322. pushing the push rod; 323. a spacer ring; 324. a communicating cylinder; 325. a plugging plate; 326. a through hole; 327. a first boss; 328. a second boss; 330. mounting a plate; 331. a vertical slot; 332. a transverse groove; 340. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
An embodiment of the smoke filtering device for waste heat recovery according to the present invention, as shown in fig. 1 to 11, comprises a housing 100, a piston rod 200 and a filtering mechanism 300,
the shell 100 is vertically arranged, the bottom of the shell 100 is provided with an air inlet 110, the side wall of the shell 100 is provided with an air outlet 120, the air inlet 110 is provided with a first one-way valve 130 allowing air to enter the shell 100, and the air outlet 120 is provided with a second one-way valve 140 allowing air to be discharged from the shell 100;
the filter mechanism 300 is disposed in the housing 100, and separates the interior of the housing 100 into a first chamber and a second chamber, the air inlet 110 is communicated with the second chamber, the air outlet 120 is communicated with the first chamber, and the second check valve 140 opens the air outlet 120 when the air pressure in the first chamber increases to a preset value;
the piston rod 200 is slidably mounted in the first chamber and slides up and down under the driving of an external driving element, specifically, the piston rod 200 includes a rod portion 210 and a plate portion 220, the plate portion 220 is horizontally disposed and fixedly connected to the lower end of the rod portion 210, the plate portion 220 is in sliding seal with the inner wall of the housing 100, and the rod portion 210 is connected to the external driving element and drives the plate portion 220 to slide up and down in the housing 100; the space defined by the upper side of the plate portion 220 and the housing 100 communicates with the outside of the housing 100; when the piston rod 200 moves upwards, the smoke is filtered by the filter mechanism 300 from the air inlet 110 and then is pumped into the first chamber, and when the piston rod moves downwards, the gas in the first chamber and the gas in the second chamber are extruded, and when the pressure in the first chamber rises to a preset value, the smoke is discharged from the air outlet 120; the lowest position where the piston rod 200 slides up and down in the housing 100 is higher than the air outlet 120;
the shell 100 is also internally provided with a telescopic baffle 150, the telescopic baffle 150 is slidably arranged in the second chamber and divides the second chamber into a filtering chamber and a regulating chamber, the filtering mechanism 300 is positioned in the filtering chamber, and the filtering mechanism 300 moves upwards for a preset distance under the suction action of the upward movement of the piston rod 200 after being blocked to a preset degree; after the filtering mechanism 300 moves upward for a preset distance and the piston rod 200 moves downward for exhausting, the smoke in the first chamber firstly enters the filtering chamber and pushes the telescopic baffle 150 to slide so that the adjusting chamber contracts to the limit, and then the air pressure in the first chamber is increased and exhausted from the air outlet 120; the volume of the filter chamber may be further increased due to the movement of the retractable baffle 150 so that gas in the first chamber can enter the filter chamber to backflush the filter mechanism 300.
In the present embodiment, the filtering mechanism 300 includes a filtering assembly 310, a damping assembly 320, an elastic stopper (not shown in the figure) and a mounting plate 330, the filtering assembly 310 includes a sliding plate 311, a filter cartridge 312 and a collecting bucket 313, the sliding plate 311 is slidably mounted in the casing 100 up and down and divides the inside of the casing 100 into a first chamber and a second chamber, the first chamber is located above the sliding plate 311, and the second chamber is located below the sliding plate 311; the filter cartridge 312 is fixed on the lower side of the sliding plate 311, the interior of the filter cartridge 312 penetrates through the sliding plate 311 to be communicated with the first chamber, the bottom of the filter cartridge 312 is blocked, and the peripheral wall of the filter cartridge is provided with filter holes; the collecting hopper 313 is fixed below the filter cartridge 312 and is used for collecting dust falling from the peripheral wall of the filter cartridge 312 by back flushing; the mounting plate 330 extends horizontally, is positioned at the lower side of the sliding plate 311 and is fixedly connected with the sliding plate 311, and the mounting plate 330 is provided with a vertical groove 331 extending vertically and a horizontal groove 332 extending horizontally; the two ends of the transverse groove 332 are respectively a head end and a tail end, the lower end of the vertical groove 331 is communicated with the head end of the transverse groove 332, and the length of the vertical groove 331 is smaller than a preset distance; the telescopic baffle 150 is formed by connecting two baffles up and down in a sliding way; the upper end of the telescopic baffle 150 is positioned at the upper end of the vertical groove 331 in an initial state, the telescopic baffle 150 is vertically arranged and can be horizontally installed in the shell 100 in a sliding manner, and encloses a regulating chamber with the mounting plate 330 and the shell 100, the regulating chamber is sealed and separated from the filtering chamber, and the regulating chamber is communicated with the outside of the shell 100; after the filter cartridge 312 is blocked to a preset degree, the filter cartridge and the sliding plate 311 move upwards for a preset distance under the pumping action of the upward movement of the piston rod 200, so that the upper end of the telescopic baffle 150 relatively slides to the lower end of the vertical groove 331, and in the process of downward movement and exhaust of the rear piston rod 200, the smoke in the first chamber enters the second chamber and pushes the telescopic baffle 150 to slide along the transverse groove 332 until the telescopic baffle 150 slides to the tail end of the transverse groove 332, and the chamber is regulated to be contracted to the limit; in an initial state, the elastic stopper is located on the upper side of the sliding plate 311, and is used for preventing the sliding plate 311 from moving upwards until the filter cartridge 312 is blocked to a preset degree, and the filter cartridge 312 and the sliding plate 311 rapidly move upwards beyond the elastic stopper under the suction effect of the upward movement of the piston rod 200; specifically, the elastic stop includes a stop pillar and a spring, an installation groove is formed on the inner wall of the housing 100, the stop pillar is horizontally slidably installed in the installation groove, the stop pillar extends out of the installation groove under the pushing of the spring, and one end of the stop pillar extending out of the installation groove is located on the upper side of the sliding plate 311 to prevent the sliding plate 311 from moving upwards; one end of the retaining column extending out of the mounting groove is in a ball head shape until the filter cylinder 312 is blocked to a preset degree, the filter cylinder 312 and the sliding plate 311 push the retaining column to the mounting groove under the suction effect of upward movement of the piston rod 200 and rapidly move upwards, and the retaining column is always extruded to the mounting groove in the upward movement process of the sliding plate 311; by providing an elastic stopper such that the filter assembly 310 moves upward after the filter cartridge 312 is clogged to a predetermined degree, the filter assembly 310 is prevented from frequently moving upward by the suction of the piston rod 200. The damping member 320 increases the resistance of the sliding plate 311 moving downward, so as to prevent the telescopic baffle 150 from being locked in the vertical slot 331 again when the filtering member 310 moves downward too fast, and further prevent the telescopic baffle 150 from failing to move along the horizontal slot 332.
In this embodiment, the damping assembly 320 includes a damping cylinder 321, a push rod 322, a separating ring 323, a communicating cylinder 324 and a blocking plate 325, the damping cylinder 321 is located in the second chamber and fixed to the housing 100, and hydraulic oil is filled in the damping cylinder 321; the separating ring 323 can be installed in the damping cylinder 321 in a vertically sliding manner, the communicating cylinder 324 is vertically arranged and fixed on the lower side of the separating ring 323, the separating ring 323 and the communicating cylinder 324 divide the damping cylinder 321 into a third chamber and a fourth chamber, the third chamber is located above the separating ring 323, and the fourth chamber is located below the separating ring 323; the push rod 322 is installed on the damping cylinder 321 in a vertically sliding manner, the upper end of the push rod 322 is fixedly connected with the sliding plate 311, and the lower end of the push rod 322 is fixedly connected with the communicating cylinder 324; the upper end of the communicating cylinder 324 is opened and communicated with the third chamber, and a plurality of through holes 326 communicated with the third chamber and the fourth chamber are arranged on the peripheral wall of the communicating cylinder 324; a first boss 327 and a second boss 328 are arranged on the inner peripheral wall of the communicating cylinder 324, the first boss 327 is positioned above the second boss 328, the first boss 327 is positioned in the middle of the through hole 326, and the second boss 328 is positioned at the bottom of the through hole 326; the blocking plate 325 can slide up and down between the first boss 327 and the second boss 328 and is in sealing contact with the inner wall of the communication cylinder 324, and the blocking plate 325 blocks the bottom of the communication cylinder 324; when the push rod 322 moves upwards along with the sliding plate 311, the separation ring 323 and the communication cylinder 324 are driven to move upwards synchronously, the blocking plate 325 is pushed by hydraulic oil in the third cavity to abut against the upper side of the second boss 328, so that the whole area of the through hole 326 is communicated with the third cavity and the fourth cavity, the hydraulic oil in the third cavity smoothly flows to the fourth cavity, and the resistance of the sliding plate 311 moving upwards is small; when the push rod 322 moves downwards along with the sliding plate 311, the separating ring 323 and the communicating cylinder 324 are driven to move downwards synchronously, the blocking plate 325 is pushed by hydraulic oil in the fourth chamber to abut against the lower side of the first boss 327, so that only the upper half of the through hole 326 is communicated with the third chamber and the fourth chamber, the hydraulic oil in the fourth chamber is blocked from flowing to the third chamber, and the resistance of the sliding plate 311 moving downwards is large.
In this embodiment, the filter mechanism 300 further includes a return spring 340, the return spring 340 extends vertically, and one end of the return spring 340 is connected to the sliding plate 311, and the other end is connected to the housing 100, the return spring 340 stores force when the sliding plate 311 moves upward, and urges the sliding plate 311 to move downward when the piston rod 200 moves downward.
In this embodiment, the collection hopper 313 is a funnel shape with a large upper end, a small lower end and an upward opening, and the outer side surface of the collection hopper 313 is a smooth arc surface to reduce resistance to the smoke entering from the air inlet 110 and to guide the smoke to flow upward through the filter cartridge 312.
In this embodiment, an elastic member is disposed between the retractable baffle 150 and the housing 100, and after the air outlet 120 is opened to communicate the first and second chambers with the outside of the housing 100, the elastic member urges the retractable baffle 150 to move along the transverse slot 332 to the head end of the transverse slot 332.
In this embodiment, the housing 100, the piston rod 200 and the filter mechanism 300 form one filter unit, the number of the filter units is two, and when the piston rod 200 of one filter unit moves downwards to exhaust air, the piston rod 200 of the other filter unit moves upwards to extract air, so that the air intake and exhaust of the two filter units are continuously performed.
In this embodiment, the first one-way valve 130 and the second one-way valve 140 have the same structure, and each of the first one-way valve 130 and the second one-way valve 140 includes a valve plate and a pressure spring (not shown in the figure), the valve plate is slidably mounted at the air inlet 110 or the air outlet 120, the air inlet 110 and the air outlet 120 are both provided with a stop ring, the valve plate is provided with a vent hole corresponding to the stop ring, and the pressure spring urges the valve plate to be attached to the stop ring, so that the stop ring blocks the vent hole; the valve plate of the first one-way valve 130 is located on the side, close to the second chamber, of the stop ring at the air inlet 110, the valve plate of the second one-way valve 140 is located on the side, away from the first chamber, of the stop ring at the air outlet 120, the stiffness coefficient of the pressure spring of the second one-way valve 140 is larger than that of the pressure spring of the first one-way valve 130, and when the air pressure in the first chamber increases to a preset value, the valve plate and the stop ring are away from each other by overcoming the elasticity of the pressure spring of the second one-way valve 140.
In this embodiment, in the initial state of the smoke filter for waste heat recovery according to the present invention, the elastic stopper abuts against the upper side surface of the sliding plate 311, the upper end of the retractable baffle 150 is located at the upper end of the vertical groove 331, the retractable baffle 150 is in the minimum length state in the vertical direction, and the vertical groove 331 blocks the retractable baffle 150 from sliding horizontally.
Before the filter cartridge 312 is blocked to a preset degree, when the piston rod 200 moves upwards, the valve plate at the air outlet 120 is attached to the stop plate under the suction combined action of the pressure spring and the piston rod 200, so that the air outlet 120 is closed, and the valve plate at the air inlet 110 moves upwards to be separated from the stop plate under the suction action of the piston rod 200, so that the air inlet 110 is opened; the smoke is drawn from the inlet 110 into the second chamber and filtered by the filter cartridge 312 and enters the first chamber from the interior of the filter cartridge 312. During this process, the filter assembly 310 tends to move upward but does not move upward under the suction of the piston rod 200 due to the unclogging or less clogging of the filter cartridge 312. When the rear piston rod 200 moves downwards, the valve plate at the air inlet 110 is attached to the stop plate under the extrusion combined action of the pressure spring and the piston rod 200, so that the air inlet 110 is closed; because telescopic baffle 150 is restricted horizontal slip, the volume of adjusting the chamber does not change, extrudes the gas in first chamber and the filter chamber when piston rod 200 moves down, and gas pressure in the first chamber increases to the default, and the valve plate of gas outlet 120 department overcomes the resistance of pressure spring and the backstop breaks away from the contact under the air pressure effect in first chamber, makes gas outlet 120 open, and then discharges the flue gas after filtering.
When the filter cartridge 312 is blocked to a preset degree, and the piston rod 200 moves upwards, the filter assembly 310 crosses the elastic stopper to move upwards for a preset distance under the suction effect of the piston rod 200, and the mounting plate 330 slides the upper end of the retractable baffle 150 to the lower end of the vertical groove 331 along with the upward movement of the sliding plate 311, so as to drive the retractable baffle 150 to extend. When the piston rod 200 moves downwards, because the damping component 320 enables the sliding plate 311 to move downwards with a large resistance, the sliding plate 311 moves downwards slowly, the piston rod 200 moves downwards to extrude the gas in the first chamber to the second chamber to recoil the filter cartridge 312, and meanwhile, the pushing telescopic baffle 150 slides along the transverse groove 332 until the telescopic baffle 150 slides to the tail end of the transverse groove 332, and the adjusting chamber is compressed to the limit; when the gas in the first chamber backflushs the filter cartridge 312, the volume of the filter chamber is increased by moving the telescopic baffle 150, so that the gas in the first chamber can more easily enter the filter chamber, and the backflush effect on the filter cartridge 312 is further improved; and the larger the clogging degree of the filter cartridge 312 is, the larger the preset distance moved upward by the suction action of the piston rod 200 is, the longer the telescopic baffle 150 is stretched, the larger the regulation chamber is, the more the volume of the filtering chamber is increased when the telescopic baffle 150 is moved, and the better the back flushing effect on the filter cartridge 312 is. When the regulating chamber is compressed to the limit, the piston rod 200 continuously moves downwards to extrude the gas in the first chamber and the gas in the second chamber, until the gas pressure in the first chamber is increased to a preset value, the second check valve 140 opens the gas outlet 120, and the filtered smoke is discharged. And in the gas discharging process, the filter assembly 310 is driven by the return spring 340 and is slowly moved downwards to be reset under the obstruction of the damping assembly 320, and the retractable baffle 150 returns to the head end of the transverse groove 332 under the action of the elastic member and slides to the upper end of the vertical groove 331 when the filter assembly 310 returns to the initial position downwards.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. The utility model provides a smoke and dust filter equipment for waste heat recovery which characterized in that: the gas filter comprises a shell, a piston rod and a filtering mechanism, wherein the shell is vertically arranged, the bottom of the shell is provided with a gas inlet, the side wall of the shell is provided with a gas outlet, the gas inlet is provided with a first one-way valve allowing gas to enter the shell, and the gas outlet is provided with a second one-way valve allowing gas to be discharged from the shell; the filtering mechanism is arranged in the shell and divides the interior of the shell into a first chamber and a second chamber, the air inlet is communicated with the second chamber, the air outlet is communicated with the first chamber, and the second one-way valve enables the air outlet to be opened when the air pressure in the first chamber is increased to a preset value; the piston rod is slidably mounted in the first chamber and slides up and down under the drive of the external drive element, when the piston rod moves upwards, the smoke is filtered by the filter mechanism from the air inlet and then is pumped into the first chamber, when the piston rod moves downwards, the air in the first chamber and the second chamber is extruded, and when the air pressure in the first chamber rises to a preset value, the smoke is discharged from the air outlet; the shell is internally provided with a telescopic baffle which is slidably arranged in the second cavity and divides the second cavity into a filtering cavity and a regulating cavity, the filtering mechanism is positioned in the filtering cavity, and the filtering mechanism moves upwards for a preset distance under the suction action of the upward movement of the piston rod after being blocked to a preset degree; after the filtering mechanism moves upwards for a preset distance and the piston rod moves downwards for exhausting, smoke in the first cavity firstly enters the filtering cavity and pushes the telescopic baffle to slide so that the adjusting cavity contracts to the limit, then the air pressure in the first cavity is increased and exhausted from the air outlet, so that the smoke in the first cavity can enter the filtering cavity and backflush the filtering mechanism, the filtering mechanism comprises a filtering component, a damping component, an elastic stop block and a mounting plate, the filtering component comprises a sliding plate, a filtering cylinder and a collecting hopper, the sliding plate can be slidably mounted in the shell up and down and divides the shell into a first cavity and a second cavity, the first cavity is positioned above the sliding plate, and the second cavity is positioned below the sliding plate; the filter cylinder is fixed on the lower side of the sliding plate, the interior of the filter cylinder penetrates through the sliding plate to be communicated with the first chamber, the bottom of the filter cylinder is plugged, and the peripheral wall of the filter cylinder is provided with filter holes; the collecting hopper is fixed below the filter cylinder and is used for collecting dust falling from the circumferential wall of the filter cylinder in a back-flushing manner; the mounting plate extends horizontally, is positioned at the lower side of the sliding plate and is fixedly connected with the sliding plate, and is provided with a vertical groove extending vertically and a horizontal groove extending horizontally; the two ends of the transverse groove are respectively a head end and a tail end, and the lower end of the vertical groove is communicated with the head end of the transverse groove; the upper end of the telescopic baffle is positioned at the upper end of the vertical groove in an initial state, the telescopic baffle is vertically arranged and can be horizontally and slidably installed in the shell, and the telescopic baffle, the installation plate and the shell enclose a regulation cavity, the regulation cavity is sealed and separated from the filtering cavity, and the regulation cavity is communicated with the outside of the shell; after the filter cylinder is blocked to a preset degree, the filter cylinder and the sliding plate move upwards for a preset distance under the suction action of the upward movement of the piston rod, so that the upper end of the telescopic baffle plate relatively slides to the lower end of the vertical groove, in the process of downward movement and exhaust of the rear piston rod, the smoke in the first cavity enters the second cavity and pushes the telescopic baffle plate to slide along the transverse groove until the telescopic baffle plate slides to the tail end of the transverse groove, and the cavity is regulated to be contracted to the limit; in an initial state, the elastic stop block is positioned on the upper side of the sliding plate and used for preventing the sliding plate from moving upwards until the filter cartridge is blocked to a preset degree, and the filter cartridge and the sliding plate move upwards beyond the elastic stop block under the suction action of the upward movement of the piston rod; the damping assembly increases the resistance of the sliding plate to move downwards, and when the gas in the first chamber recoils the filter cylinder, the volume of the filtering chamber is increased through the movement of the telescopic baffle plate, so that more gas in the first chamber enters the filtering chamber; and the larger the blockage degree of the filter cartridge is, the larger the preset distance moved upwards under the suction action of the piston rod is, the longer the telescopic baffle is stretched, the larger the regulating chamber is, and the more the volume of the filtering chamber is increased when the telescopic baffle moves.
2. The smoke filtering device for waste heat recovery according to claim 1, wherein: the damping assembly comprises a damping cylinder, a push rod, a separating ring, a communicating cylinder and a plugging plate, the damping cylinder is positioned in the second chamber and is fixed on the shell, and hydraulic oil is filled in the damping cylinder; the separating ring can be arranged in the damping cylinder in a vertically sliding mode, the communicating cylinder is vertically arranged and fixed on the lower side of the separating ring, the separating ring and the communicating cylinder divide the interior of the damping cylinder into a third chamber and a fourth chamber, the third chamber is located above the separating ring, and the fourth chamber is located below the separating ring; the ejector rod is arranged in the damping cylinder in a vertically sliding manner, the upper end of the ejector rod is fixedly connected with the sliding plate, and the lower end of the ejector rod is fixedly connected with the communicating cylinder; the upper end of the communicating cylinder is opened and communicated with the third chamber, and a plurality of through holes for communicating the third chamber with the fourth chamber are formed in the peripheral wall of the communicating cylinder; the inner peripheral wall of the communicating cylinder is provided with a first boss and a second boss, the first boss is positioned above the second boss, the first boss is positioned in the middle of the through hole, and the second boss is positioned at the bottom of the through hole; the plugging plate can slide up and down between the first boss and the second boss and is in sealing contact with the inner wall of the communicating cylinder, and the plugging plate plugs the bottom of the communicating cylinder; when the push rod moves upwards along with the sliding plate, the separating ring and the communicating cylinder are driven to synchronously move upwards, and the plugging plate is pushed by hydraulic oil in the third cavity and is abutted against the upper side of the second boss; when the push rod moves downwards along with the sliding plate, the separating ring and the communicating cylinder are driven to synchronously move downwards, and the plugging plate is abutted against the lower side of the first boss under the pushing and extruding of hydraulic oil in the fourth chamber.
3. The smoke filtering device for waste heat recovery according to claim 2, wherein: the filtering mechanism further comprises a reset spring, the reset spring vertically extends, one end of the reset spring is connected with the sliding plate, the other end of the reset spring is connected with the shell, and the reset spring stores force when the sliding plate moves upwards.
4. The smoke filtering device for waste heat recovery according to claim 1, wherein: the collecting hopper is of a funnel shape with a large upper end, a small lower end and an upward opening, and the outer side surface of the collecting hopper is a smooth arc-shaped surface.
5. The smoke filtering device for waste heat recovery according to claim 1, wherein: be provided with the elastic component between retractable baffle and the shell, open at the gas outlet and lead to first cavity and second cavity and the outside intercommunication of shell after, the elastic component makes retractable baffle move to the head end of cross slot along the cross slot.
6. The smoke filtering device for waste heat recovery according to claim 3, wherein: the shell, the piston rods and the filtering mechanisms form one filtering unit, the number of the filtering units is two, and when the piston rod of one filtering unit moves downwards to exhaust air, the piston rod of the other filtering unit moves upwards to exhaust air, so that air inlet and exhaust of the two filtering units are continuously carried out.
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| CN202211239623.5A CN115301020B (en) | 2022-10-11 | 2022-10-11 | Smoke dust filtering device for waste heat recovery |
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| CN202211239623.5A CN115301020B (en) | 2022-10-11 | 2022-10-11 | Smoke dust filtering device for waste heat recovery |
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| CN115301020B true CN115301020B (en) | 2023-03-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115532001A (en) * | 2022-11-25 | 2022-12-30 | 太阳谷再生资源(江苏)有限公司 | Waste heat recovery device |
| CN115957579B (en) * | 2023-03-17 | 2023-05-12 | 河北省沧州生态环境监测中心 | Multi-cycle waste gas treatment device |
| CN117085391B (en) * | 2023-10-20 | 2024-01-12 | 深圳市壹格锐科技有限公司 | Self-cleaning sewage filtering device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806681A (en) * | 2019-03-30 | 2019-05-28 | 李彩虹 | Dust absorbing devices |
| CN211885798U (en) * | 2019-12-26 | 2020-11-10 | 上海聚隆电子科技有限公司 | Air inducing device for production workshop |
| CN114100267A (en) * | 2021-11-26 | 2022-03-01 | 广州市万保职业安全事务有限公司 | Machine tool net replacement-free gas filtering device |
| CN217077512U (en) * | 2022-04-28 | 2022-07-29 | 河南强新净化过滤科技有限公司 | Natural gas filtering and separating filter element with long service life |
-
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109806681A (en) * | 2019-03-30 | 2019-05-28 | 李彩虹 | Dust absorbing devices |
| CN211885798U (en) * | 2019-12-26 | 2020-11-10 | 上海聚隆电子科技有限公司 | Air inducing device for production workshop |
| CN114100267A (en) * | 2021-11-26 | 2022-03-01 | 广州市万保职业安全事务有限公司 | Machine tool net replacement-free gas filtering device |
| CN217077512U (en) * | 2022-04-28 | 2022-07-29 | 河南强新净化过滤科技有限公司 | Natural gas filtering and separating filter element with long service life |
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| CN115301020A (en) | 2022-11-08 |
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