CN213266224U

CN213266224U - Low-temperature sludge vacuum drying filter press

Info

Publication number: CN213266224U
Application number: CN202022005082.2U
Authority: CN
Inventors: 曾从根
Original assignee: Jiangxi Runda Environmental Protection Technology Co ltd
Current assignee: Jiangxi Runda Environmental Protection Technology Co ltd
Priority date: 2020-09-15
Filing date: 2020-09-15
Publication date: 2021-05-25
Anticipated expiration: 2030-09-15

Abstract

The utility model discloses a low temperature sludge vacuum drying pressure filter: it comprises a front fixing plate and a rear fixing plate which are oppositely arranged on a front supporting leg and a rear supporting leg, a supporting plate rotating seat is arranged on one end face of the front fixing plate, the utility model discloses be equipped with the pressurization hydro-cylinder relatively on the backup pad roating seat, pressurization ejector pin one end on the pressurization hydro-cylinder passes the pressurization ejector pin slide, is equipped with sludge inlet on the filter-pressing tympanic membrane subassembly, and sludge inlet inner is connected with the mud cavity in the filter-pressing tympanic membrane subassembly through the gap, is provided with the air intake pipe on the filter-pressing tympanic membrane subassembly, and the filter-pressing tympanic membrane subassembly is made by a plurality of filter-pressing tympanic membrane board monomers, is provided with hot water import and hot water export on the filter-pressing tympanic membrane subassembly, the utility model discloses the water content in the mud cake can be made and reduced 30-50%, the processing degree of difficulty of mud cake has alleviateed, does not need to add hot drying equipment, has reduced mud cake processing.

Description

Low-temperature sludge vacuum drying filter press

Technical Field

The utility model relates to a sludge filter press especially relates to a sludge adopts low temperature vacuum mummification filter-pressing dehydration pressure filter.

Background

Since the sludge (or sludge slurry) is derived from sewage, particularly domestic sewage, which contains a large amount of sludge, the domestic sewage is subjected to filter pressing treatment before chemical treatment of the domestic sewage in order to improve the chemical treatment effect, so that the sludge in the domestic sewage is discharged first. At present, domestic sewage is mostly subjected to filter pressing by adopting a traditional sludge filter press which is formed by combining a plurality of filter plates, filter cloth and filter frames into a plurality of filter pressing units connected with one another to form a filter pressing chamber, wherein the traditional sludge filter press comprises a box type filter press, a frame type filter press and a diaphragm filter press. The traditional sludge diaphragm filter press is characterized in that filter cloth is arranged on two sides of a filter plate, the filter cloth is tightly pressed by the filter plate after the filter plate is assembled, the periphery of the filter plate is sealed, a sludge chamber is arranged in the middle of the filter plate, domestic sewage (also called sludge slurry) is pumped into the sludge filter plate chamber through a sludge pump, water in the sludge slurry permeates the filter cloth, and the sewage after filter pressing enters a tympanic membrane drainage channel and then flows into a filter plate drainage hole to be discharged out of a machine. The sludge slurry enters the sludge filter plate chamber, the moisture is filtered by the filter cloth, the sludge pumping of the sludge slurry is stopped after the sludge concentration reaches, the sludge slurry inlet pneumatic ball valve is closed, the pressure water is injected into the middle of the tympanic membrane filter plate, the more the pressure water is injected, the tympanic membrane sheets on the two sides of the filter plate extend towards the sludge chamber, the thickness of the sludge chamber is narrowed, the water of the sludge slurry is slowly extruded out, the more the moisture in the sludge is extruded along with the increase of the injected water pressure, the lower the moisture content in the sludge is, the more difficult the moisture of the sludge slurry is extruded along with the increase of the sludge density, the higher the moisture content in the sludge cake after the traditional sludge pressure filtration, the water content is mostly 65-75 percent, if the moisture content of the sludge cake is further reduced to reduce the difficulty of a third party manufacturer for treating the sludge cake, a thermal drying device or other devices are additionally adopted, the treatment difficulty is, increase energy consumption and equipment investment, and occupy the area of a factory building.

SUMMERY OF THE UTILITY MODEL

The utility model provides a low temperature sludge vacuum drying filter press which can reduce the water content of the sludge cake to 30-50% and meet the technical requirement of the third party for treating the sludge cake, aiming at the problems caused by the higher water content in the sludge cake after the filter pressing of the domestic sewage sludge filter press.

The utility model relates to a low-temperature sludge vacuum drying filter press, which comprises a front fixed plate and a rear fixed plate which are oppositely arranged on a front supporting leg and a rear supporting leg, wherein four side polymer columns are arranged between the front fixed plate and the rear fixed plate, an opening and closing die cylinder is arranged on the front fixed plate, one end of a cylinder piston rod is connected with a middle movable plate, a rotatable supporting plate rotating seat is arranged on one end face of the front fixed plate, a pressurizing cylinder is oppositely arranged between the supporting plate rotating seat and the middle movable plate, one end of a pressurizing mandril on the pressurizing cylinder passes through a pressurizing mandril sliding seat, so that a filter-pressing tympanic membrane assembly arranged between the middle movable plate and the rear fixed plate is tightly pressed and sealed, a sludge inlet is arranged on the filter-pressing tympanic membrane assembly, the outer end of the sludge inlet is connected with a sludge pump, and the, the pneumatic sludge ball valve is connected with the vacuumizing pneumatic ball valve, the pneumatic sewage drainage main ball valve and the pneumatic sewage drainage ball valve, the pneumatic sewage drainage ball valve is connected with a sewage outlet, the vacuumizing pneumatic ball valve is connected with one end of a cooler, the other end of the cooler is connected with a vacuum energy accumulator, the vacuum energy accumulator is respectively connected with a vacuum pump and a vacuum water storage barrel, the vacuum pump is connected with a vacuum exhaust pipe, and the vacuum water storage barrel is connected with a water storage barrel drain valve; the filter-pressing tympanic membrane component is provided with an air inlet pipe, the air inlet pipe is connected with an air inlet through a back-blowing pneumatic ball valve, the filter-pressing tympanic membrane component is made of a plurality of filter-pressing tympanic membrane plate monomers, the filter-pressing tympanic membrane plate component is provided with a hot water inlet and a hot water outlet, the filter-pressing tympanic membrane plate monomers comprise a base and a pressing plate for fixing the base, the base is provided with a tympanic membrane, the tympanic membrane is provided with a cylindrical table at intervals, the periphery of the cylindrical table is a drainage groove, the periphery of the tympanic membrane is provided with a diversion groove communicated with the drainage groove, the middle of the tympanic membrane is provided with a limit step, the tympanic membrane is provided with filter cloth which is positioned on the cylindrical table in the middle and extends to the pressing plate in the periphery, the diversion groove sewage outlet is connected, one end of the hot water inlet is communicated with a sleeve fixed between the, one end of the hot water outlet is connected with the middle water distribution groove, a sludge cavity is formed between the filter cloths, sewage after sludge press filtration enters the drainage groove, and the sewage in the drainage groove enters the sewage outlet through the water diversion groove and the sewage outlet water hole to be discharged outside.

The utility model discloses a membrane filter press carries out the filter-pressing to mud through mechanical pressure, then lets in the hot water of certain pressure to filtering drum diaphragm plate again, makes the tympanic membrane piece to the two-sided extrusion dehydration of mud in the mud cavity, then takes out the mud cavity into the vacuum again, makes sewage become steam in the mud cavity and by the vacuum pump suction, and reuse highly-compressed air carries out the blowback to the mud cavity, uses and keeps totally in the mud cavity. The utility model discloses adopt above-mentioned method to carry out the filter-pressing to mud on the membrane pressure filter, water content in the mud cake after enabling the mud thick liquid filter-pressing drops to 30-50%, alleviates the third party producer to the processing degree of difficulty of mud cake, and the third party producer need not add heat drying equipment or other devices, reduces mud cake and handles man-hour cost, energy consumption and equipment investment, sparingly occupies factory building area.

Drawings

Figure 1 is a schematic view of the structure of the utility model,

figure 2 is a schematic cross-sectional view of a filtration tympanic plate assembly according to the present disclosure,

figure 3 is an enlarged view of the X-X detail of figure 2,

FIG. 4 is an enlarged view of a portion of the structure Y-Y of FIG. 2.

In the figure, 1, a side gathering column 2, a front fixed plate 3, a support plate rotating seat 4, an ejector rod support plate 5, a pressurizing ejector rod sliding seat 6, a pressurizing ejector rod 7, a pressurizing oil cylinder 8, a middle movable plate 9, a back blowing pneumatic ball valve 10, an air inlet pipe 11, a hot water outlet 12, a hot water backflow branch pipe 13, a filter pressing tympanic membrane component 14, a rear fixed plate 15, a mud inlet pneumatic ball valve 16, a sludge pump 17, a sludge inlet 18, a cooler 19, a vacuum energy accumulator 20, a vacuum pump 21, a vacuum exhaust pipe 22, a vacuum water storage barrel 23, a vacuum water storage barrel drain valve 24, a vacuum pumping pneumatic ball valve 25, a sewage discharge pneumatic main ball valve 26, a sewage discharge pneumatic ball valve 27, a rear support leg 28, a hot water inlet 29, a hot water diversion pipe 30, a hot water inlet pipe 31, a hot, The device comprises a hot water pressurizing pump 33, a hot water heat-preserving barrel 34, an air energy water heater 35, an oil cylinder piston rod 36, a front supporting leg 37, a hot water return pipe 38, a mud discharging pneumatic ball valve 39, a sewage outlet 40, a pipeline 41, filter cloth 42, a mud cake 43, a water passing groove 44, a middle water distributing groove 45, a cylindrical table 46, a water draining groove 47, a base 48, a sewage water outlet hole 49, a pressure plate 50, a water guiding groove 51, a limiting step 52, a sleeve 53, a slit opening 54 and a drum diaphragm.

Detailed Description

Sludge vacuum drying filter pressing device's working process:

1. filter cloth is arranged on two sides of a filter drum membrane plate on the low-temperature vacuum sludge press-filtering and drying integrated machine, the filter drum membrane plate is provided with a hot water inlet 28 and a hot water outlet 11 with pressure, the filter drum membrane plate presses the filter cloth after die assembly, the periphery of the filter drum membrane plate is sealed, a sludge cavity is arranged in the middle of the filter drum membrane plate, sludge slurry is pumped into the sludge cavity through a sludge pump 16 and a sludge inlet pneumatic ball valve 15, sewage after sludge press-filtering penetrates through the filter cloth and enters a tympanic membrane drainage groove, then flows into a sewage drainage port 39 and is discharged outside through a sewage drainage pneumatic ball valve 26 and a sewage drainage pneumatic main ball valve 25;

2. the sludge slurry enters a sludge chamber in the filter drum membrane plate, water is filtered out through filter cloth, the filter-pressed sewage is discharged out through a sewage outlet 39, the sludge pump is stopped to pump the sludge slurry after the sludge concentration reaches a set value (when the water content of a mud cake is 65-75%), and the sludge inlet pneumatic ball valve 15 and the sludge discharge pneumatic ball valve 38 are closed. High-temperature hot water with the temperature of 75-90 ℃ and the pressure of 0.2-2MPa is injected into the middle of the tympanic membrane filter plate, the more the hot water is injected, the tympanic membrane sheets on the two sides of the filter plate extend towards the sludge chamber, the sludge thickness in the sludge chamber is reduced by the extrusion of the tympanic membrane, the water in the sludge is slowly extruded out, the more the water in the sludge is extruded along with the increase of the injected water pressure, the lower the water content in the sludge is, the more difficult the water in the sludge is extruded along with the increase of the sludge density, and when the tympanic membrane is extruded without water, the extrusion reaches the limit of a filter press, and simultaneously the sludge is heated;

closing the sewage drainage pneumatic main ball valve 25, opening the vacuumizing pneumatic ball valve 24, starting the vacuum pump 20, changing air in a sludge chamber after squeezing into negative pressure along with the work of the vacuum pump, increasing the negative pressure, changing water in the sludge into the negative pressure due to air pressure, changing water in the sludge into low boiling point, easily evaporating the water in the heated sludge into water vapor, sucking the water vapor out by the vacuum pump, reducing the temperature of the sucked water vapor through the steam cooler 18, changing the water into water, entering the vacuum energy accumulator 19, falling into the vacuum water storage barrel 22, and discharging the water vapor through the water discharge valve 23 of the vacuum water storage barrel;

3. the sludge in the middle of the filter drum membrane plate is dried at low temperature in vacuum to meet the requirement, a sludge inlet pneumatic valve is opened, a sludge discharge pneumatic ball valve is opened, a sewage discharge pneumatic main ball valve is opened, a sewage discharge pneumatic ball valve 26 is closed, a vacuumizing pneumatic ball valve is closed, a back-flushing pneumatic ball valve 9 is opened, high-pressure air enters a sludge inlet cavity through an air inlet pipe 10, sludge slurry in the sludge cavity is discharged outside, and after back flushing is completed, the sludge between the filter plates is discharged after drying;

4. when mud squeezes, hot water gets into hot water back flow 37 from hot water export 11 and hot water backward flow branch pipe 12, the hot water back flow links to each other with air energy hot-water heating machine 34, air can get into hot water heat-preserving container 33 after heating up hot water with the hot water heating, after the pressurization through the hot water force (forcing) pump, high-pressure water intaking through following tympanic membrane filter water inlet, little water yield gets into in the middle basin from the basin that crosses on the tympanic membrane filter, the hot water of discharging heats through heating system, reentrant hot water heat-preserving container, keep the pressure of squeezing of drum membrane, the moisture in the mud squeezes out through the filter cloth, squeeze to certain effect after, vacuum system opens, tympanic membrane filter delivery port enlargies, it diminishes to squeeze pressure, the flow grow of hot water through the tympanic membrane filter, make the mud temperature uprise, accelerate the evaporation of.

The utility model relates to a low-temperature sludge vacuum drying filter press, which comprises a front fixed plate 2 and a rear fixed plate 14 which are oppositely arranged on a front supporting leg 36 and a rear supporting leg 27, wherein four side polymer columns 1 are arranged between the front fixed plate and the rear fixed plate, a mold opening and closing oil cylinder is arranged on the front fixed plate, one end of an oil cylinder piston rod 35 is connected with a middle movable plate 8, a rotatable supporting plate rotating seat 3 is arranged on one end surface of the front fixed plate, a pressurizing oil cylinder 7 is oppositely arranged between the supporting plate rotating seat and the middle movable plate, one end of a pressurizing mandril 6 (equivalent to a piston rod) on the pressurizing oil cylinder passes through a pressurizing mandril sliding seat 5, the middle movable plate moves leftwards (when a mold is opened), the supporting plate rotating seat rotates an angle under the action of an air cylinder, so that the pressurizing mandril movably, the supporting plate rotating seat rotates by an angle under the action of the air cylinder to return to the original position, so that the pressurizing ejector rod cannot penetrate through the ejector rod supporting plate 4 and the front fixing plate 2, the pressurizing ejector rod 6 of the pressurizing oil cylinder is used for reversely applying force to the middle movable plate 8, the filter pressing tympanic membrane assembly 13 placed between the middle movable plate and the rear fixing plate is tightly attached in a sealing manner under stress, the outer end of a sludge inlet 17 on the filter pressing tympanic membrane assembly 13 is connected with a sludge pump 16 through a pipeline 40 and a sludge inlet pneumatic ball valve 15, and the inner end of the sludge inlet 17 is connected with a sludge chamber (the sludge chamber is provided with a sludge cake 42) in the filter pressing tympanic membrane assembly through a slit. The mud inlet pneumatic ball valve is connected with the vacuumizing pneumatic ball valve 24, the sewage drainage pneumatic main ball valve 25 and the sewage drainage pneumatic ball valve 26 through a pipeline and a mud drainage pneumatic ball valve 38, the sewage drainage pneumatic ball valve is connected with a sewage outlet 39, the vacuumizing pneumatic ball valve is connected with one end of a cooler 18, the other end of the cooler is connected with a vacuum energy accumulator 19, the vacuum energy accumulator is respectively connected with a vacuum pump 20 and a vacuum water storage barrel 22, the vacuum pump is connected with a vacuum exhaust pipe 21, and the vacuum water storage barrel is connected with a vacuum water storage barrel drain valve 23. An air inlet pipe 10 is arranged on the filter-pressing tympanic membrane assembly 13, the air inlet pipe is connected with an air inlet (air source) through a back-flushing pneumatic ball valve 9, the air inlet pipe is communicated with a drainage tank and a sludge cavity, a hot water inlet 28 is arranged on the filter-pressing tympanic membrane assembly 13, the hot water inlet is formed by a water pipe, one end of the hot water inlet is connected with a hot water inlet pipe 30 through a hot water shunt pipe 29, the hot water inlet pipe 30 is connected with a hot water heat-preserving container 33 through a hot water inlet ball valve 31 and a hot water pressure pump 32, and the hot water heat-preserving container 33 is connected with an air energy; the other end of the hot water inlet is communicated and connected with a sleeve 52 fixed between the bases, a water passing groove 43 communicated with each other is arranged between the sleeve and an intermediate water distribution groove 44 on the tympanic membrane, a hot water outlet 11 is arranged on the filter pressing tympanic membrane assembly 13, the hot water outlet is connected with the air energy water heater 34 through a hot water return branch pipe 12 and a hot water return pipe 37, sewage after sludge filter pressing enters a drainage groove, sewage after sludge filter pressing enters the drainage groove, the sewage in the drainage groove enters a sewage water outlet 39 through a water guide groove 50 and a sewage water outlet water hole 48, and then is discharged outside through a sewage water discharge pneumatic ball valve 26 and a sewage water discharge pneumatic main ball valve 25 which are connected with the sewage water outlet. The filtering drum diaphragm single body comprises a bottom stainless steel base 47 and a pressing plate 49, wherein the bottom stainless steel base 47 and the pressing plate are tightly attached to each other, the pressing plate is provided with a countersunk head fastening screw hole (not marked in the drawing), the base is provided with a drum diaphragm 54, cylindrical platforms 45 are arranged on the drum diaphragm at intervals, the periphery of each cylindrical platform is provided with a drainage groove 46, the periphery of the drum diaphragm is provided with a drainage groove 50 communicated with the drainage groove, the middle of the drum diaphragm is provided with a limiting step 51, the drum diaphragm is provided with a filter cloth 41, the middle of the filter cloth is positioned on the cylindrical platforms 45, the periphery of the filter cloth extends to the space between the pressing plates, the filter cloth covers the cylindrical platforms and the limiting step, the filter cloth is made of 200-mesh 300-mesh high-temperature-resistant and corrosion-resistant fiber.

Claims

1. The utility model provides a low temperature sludge vacuum drying pressure filter, it includes preceding fixed plate (2) and after-fixing board (14) that set up relatively on preceding supporting legs (36) and after-fixing board (27), be provided with four limits between preceding fixed plate and the after-fixing board and gather post (1), be equipped with the mould hydro-cylinder that opens and shuts on the preceding fixed plate, fly leaf (8), characterized by in hydro-cylinder piston rod (35) one end is connected with: a rotatable supporting plate rotating seat (3) is arranged on one end face of a front fixed plate, a pressurizing oil cylinder (7) is arranged between the supporting plate rotating seat and a middle movable plate relatively, one end of a pressurizing ejector rod (6) on the pressurizing oil cylinder penetrates through a pressurizing ejector rod sliding seat (5) to enable a filter-pressing tympanic membrane assembly (13) placed between the middle movable plate and a rear fixed plate to be stressed, sealed and tightly attached together, a sludge inlet (17) is arranged on the filter-pressing tympanic membrane assembly, the outer end of the sludge inlet is connected with a sludge pump (16), the inner end of the sludge inlet is connected with a sludge cavity in the filter-pressing tympanic membrane assembly through a slit opening (53), a sludge inlet pneumatic ball valve (15) is connected with a vacuumizing pneumatic ball valve (24), a sewage drainage pneumatic main ball valve (25) and a sewage drainage pneumatic ball valve (26), the sewage drainage pneumatic ball valve is connected with a sewage outlet (39), and the vacuumizing pneumatic ball valve is, the other end of the cooler is connected with a vacuum energy accumulator (19), the vacuum energy accumulator is respectively connected with a vacuum pump (20) and a vacuum water storage barrel (22), and the vacuum water storage barrel is connected with a drain valve (23) of the vacuum water storage barrel; the filter-pressing tympanic membrane component is provided with an air inlet pipe (10) which is connected with a blowback pneumatic ball valve (9), the filter-pressing tympanic membrane component is made of a plurality of filter-pressing tympanic membrane plate monomers, the filter-pressing tympanic membrane plate components are provided with a hot water inlet (28) and a hot water outlet (11), the filter-pressing tympanic membrane plate monomers comprise a base (47) which is tightly attached to each other and a pressing plate (49) which is used for fixing the base, the base is provided with a tympanic membrane (54), cylindrical platforms (45) are arranged on the tympanic membrane plates at intervals, the periphery of the cylindrical platforms is a drainage groove (46), the periphery of the tympanic membrane plates is provided with a water diversion groove (50) which is communicated with the drainage groove, the middle of the tympanic membrane plates is provided with a filter cloth (41) which is positioned on the cylindrical platforms and the periphery of which extends to the pressing plate, the water diversion groove is, a water passing groove (43) is formed between the sleeve and the middle water distributing groove on the drum membrane, one end of the hot water outlet is connected with the middle water distributing groove (44), a sludge cavity is formed between the filter cloth, sewage after sludge press filtration enters the drainage groove, and the sewage in the drainage groove is discharged outside through the sewage outlet.

2. The low-temperature sludge vacuum drying filter press as claimed in claim 1, which is characterized in that: the sewage in the drainage channel enters the sewage outlet (39) through the water diversion channel (50) and the sewage outlet water hole (48) and is discharged outside through the sewage drainage pneumatic ball valve (26) and the sewage drainage pneumatic main ball valve (25) which are connected with the sewage outlet.