CN113860686A

CN113860686A - Device and method for treating PTA (purified terephthalic acid) chemical wastewater excess sludge

Info

Publication number: CN113860686A
Application number: CN202010614128.2A
Authority: CN
Inventors: 徐雪峰
Original assignee: Hainan University of Science and Technology
Current assignee: Hainan University of Science and Technology
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-12-31
Anticipated expiration: 2040-06-30
Also published as: CN113860686B

Abstract

The invention discloses a PTA chemical wastewater excess sludge treatment device and a treatment method, and particularly relates to the technical field of sludge treatment, wherein the device comprises a treatment box, a wastewater box and a sludge box, wherein the wastewater box is fixedly arranged at the bottom end of the treatment box through four connecting rods, the sludge box is fixedly arranged on one side of the treatment box, an extrusion mechanism is arranged inside the treatment box, a sludge scraping mechanism is arranged inside the wastewater box, and a heating mechanism is arranged inside the sludge box; the extrusion mechanism includes the movable box, the movable box is established and is handled incasement portion and contact with handling the incasement wall, the bottom end of the movable box is fixed and is equipped with first threaded rod, first threaded rod outer end is equipped with a screw thread section of thick bamboo through the screw thread, a screw thread section of thick bamboo is established and is handled incasement portion bottom and pass through bearing swing joint with handling the case. The invention improves the solid-liquid separation efficiency by bidirectional extrusion, and simultaneously, most of power comes from the gravitational potential energy of the wastewater, thereby greatly saving the electric energy and reducing the cost.

Description

Device and method for treating PTA (purified terephthalic acid) chemical wastewater excess sludge

Technical Field

The embodiment of the invention relates to the technical field of sludge treatment, in particular to a device and a method for treating excess sludge of PTA chemical wastewater.

Background

PTA is refined terephthalic acid, which is white powdery crystal at normal temperature, is nontoxic and inflammable, PTA is a lower end product of petroleum, the petroleum produces naphtha through a certain process, MX (mixed xylene) is extracted from the naphtha, PX (p-xylene) is extracted, PTA takes PX as a raw material, acetic acid as a solvent, crude terephthalic acid is generated through air oxidation under the action of a catalyst, then the crude terephthalic acid is subjected to hydrofining, impurities are removed, and a refined terephthalic acid product, namely a PTA finished product, is prepared through crystallization, separation and drying. Waste water is generated in PTA production, and the waste water contains a large amount of sludge and needs solid-liquid separation treatment on the excess sludge of the chemical wastewater.

The prior art has the following defects: the solid-liquid separation efficiency of the sludge and the wastewater under the action of gravity is low, and a large amount of electric energy is consumed due to the use of more electric equipment in the treatment project.

Disclosure of Invention

Therefore, the embodiment of the invention provides a device and a method for treating PTA chemical wastewater excess sludge, which improve solid-liquid separation efficiency through bidirectional extrusion, simultaneously, most of power is derived from gravitational potential energy of wastewater, greatly save electric energy and reduce cost, so as to solve the problems that in the prior art, the solid-liquid separation efficiency of sludge and wastewater is low under the action of gravity, and a large amount of electric energy is consumed due to the use of more electric equipment in a treatment project.

In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a PTA chemical wastewater excess sludge treatment device comprises a treatment box, a wastewater box and a sludge box, wherein the wastewater box is fixedly arranged at the bottom end of the treatment box through four connecting rods, the sludge box is fixedly arranged at one side of the treatment box, an extrusion mechanism is arranged inside the treatment box, a sludge scraping mechanism is arranged inside the wastewater box, and a heating mechanism is arranged inside the sludge box;

the extrusion mechanism comprises a movable box, the movable box is arranged in the treatment box and is contacted with the inner wall of the treatment box, a first threaded rod is fixedly arranged at the bottom end of the movable box, a first threaded barrel is arranged at the outer end of the first threaded rod through threads, the first threaded barrel is arranged at the bottom end in the treatment box and is movably connected with the treatment box through a bearing, a first bevel gear is fixedly arranged at the outer end of the first threaded barrel, a second bevel gear is meshed with the bottom of the first bevel gear, a first rotating shaft is fixedly arranged at one end of the second bevel gear, a first gear is fixedly arranged at the outer end of the first rotating shaft, the first rotating shaft is arranged in the treatment box and extends out of the other side of the treatment box and is movably connected with the treatment box through a bearing, a clockwork spring is arranged at the outer end of the first threaded barrel, and the clockwork spring is arranged at the bottom of the second bevel gear, the two ends of the clockwork spring are respectively fixedly connected with the outer end of the first thread cylinder and the bottom end inside the treatment box, a pressing plate is arranged inside the treatment box, a second threaded rod is fixedly arranged at the top end of the pressing plate and penetrates through the top end of the treatment box, a second thread cylinder is arranged at the outer end of the second threaded rod through threads and is arranged at the top end inside the treatment box through a bearing, a third bevel gear is fixedly arranged at the outer end of the second thread cylinder, a fourth bevel gear is meshed with the top end of the third bevel gear, one end of the fourth bevel gear is fixedly provided with a second rotating shaft, the second rotating shaft is arranged inside the treatment box and extends out of the other side of the treatment box, the second rotating shaft is movably connected with the treatment box through a bearing, a first belt pulley is fixedly arranged at the outer ends of the second rotating shaft and the first rotating shaft, and the first belt pulley is arranged at the other side of the treatment box, the two first belt pulleys are connected through a first belt, a first pipeline is fixedly arranged at the top end inside the treatment box and arranged at the outer end of a second rotating shaft, the first pipeline and the second rotating shaft are movably connected through a sealing bearing, a corrugated pipe is fixedly arranged at the bottom end of the first pipeline, a second pipeline is fixedly arranged at the bottom end of the corrugated pipe and penetrates through the top end of the movable box and a pressing plate, a plurality of first blades are fixedly arranged at the outer end of the second rotating shaft and arranged inside the first pipeline, and a filter screen is embedded at the bottom end of the movable box;

the mud scraping mechanism comprises a partition plate, the partition plate is fixedly arranged on the inner wall of the treatment box, the partition plate is arranged at the bottom of the movable box, the first threaded rod penetrates through the partition plate, a conical hopper is arranged at the bottom of the partition plate, the conical hopper penetrates through the partition plate and is arranged on one side of the first gear, a liquid dropping pipe is fixedly arranged at the bottom end of the conical hopper, the liquid dropping pipe is arranged on the rear side of a first rotating shaft, one end of the liquid dropping pipe penetrates through the bottom end of the treatment box and is fixedly connected with the top end of the waste water box and communicated with the interior of the waste water box, a third rotating shaft is arranged in the waste water box, one end of the third rotating shaft is movably connected with one side wall of the interior of the waste water box through a bearing, the other end of the third rotating shaft extends out of one side of the waste water box, a plurality of second blades are fixedly arranged at the outer end of the third rotating shaft, the second blades are arranged in the interior of the waste water box and are arranged on the front side of the bottom of the liquid dropping pipe, and a push pedal is inlaid in one side wall of the interior of the movable box, push pedal and movable box inside front and back both walls contact and establish in the clamp plate bottom, push pedal one side is equipped with reciprocal lead screw, reciprocal lead screw runs through movable box one side and extends and handle the case opposite side, reciprocal lead screw outer end is equipped with the nut seat, nut seat and third pivot outer end are all fixed and are equipped with the second belt pulley, two the second belt pulley passes through second belt interconnect, the nut seat is established at first belt inboard.

Further, the fixed feed liquor pipe that is equipped with in treatment box top, the feed liquor pipe just establishes on first blade top right side with the inside intercommunication of first pipeline, the fixed first motorised valve that is equipped with on the feed liquor pipe, the fixed movable rod that is equipped with in clamp plate top, the movable rod runs through the activity case top and establishes in second threaded rod one side, the fixed even board that is equipped with in movable rod outer end, even the board bottom is equipped with delay switch, delay switch is fixed to be established on the activity case top, delay switch and first motorised valve electric connection.

Further, heating mechanism includes the electrothermal tube, the electrothermal tube outside is equipped with the heat conduction shell, the heat conduction shell is fixed to be established in handling case one side and establish inside the sludge box, heat conduction shell one side is fixed to be equipped with a plurality of heat conduction poles, the heat conduction pole is established inside the sludge box.

Further, the meshing of first gear rear side has the second gear, second gear one end is fixed and is equipped with the fourth pivot, fourth pivot one end is equipped with the motor, the motor is fixed to be established on handling an incasement portion lateral wall, the output shaft and the fourth pivot fixed connection of motor, it is equipped with branch to handle incasement portion back wall, branch is established at fourth pivot rear side and is connected with fourth pivot bearing, motor and electrothermal tube electric connection.

Further, the fixed heat transfer case that is equipped with in sludge bin one side, the heat transfer case through two connecting rods with handle case one side fixed connection, the inside fixed heat-conducting plate that is equipped with of heat transfer case, heat transfer case one side is equipped with the third pipeline with the fixed sludge bin top, third pipeline both ends communicate with sludge bin inside and heat transfer incasement portion respectively, the fixed fourth pipeline that is equipped with between heat transfer bottom of the case portion and the waste water tank opposite side, the fourth pipeline is established in heat-conducting plate one side.

Further, even the board top is equipped with the mounting panel, the mounting panel is fixed to be established on handling the inside top of case, it is fixed to be equipped with the fixed plate to handle case opposite side, the fixed plate is established at first belt and second belt inboardly, the fixed plate is established in reciprocal lead screw one side, fixed plate one side and mounting panel bottom all are equipped with the switch, two the switch sets up to two accuse switches, the fixed second motorised valve that is equipped with on the liquid dropping pipe, second motorised valve and two accuse switch electric connection.

Further, the activity case opposite side is equipped with the curb plate, the curb plate rear end passes through the spring hinge with the activity case rear end and articulates, handle case one side and seted up the opening, the opening is established in curb plate one side and is established inside the sludge bin, the opening is established at baffle and heat conduction shell top, the fixed rubber frame that is equipped with in clamp plate outer end, the rubber frame contacts with the activity incasement wall.

Further, handle the case opposite side and seted up the opening, the opening is established between second pivot and fixed plate, there is the fly leaf inside through sliding rail connection of opening, the fly leaf is established in reciprocal lead screw outer end and is contacted with reciprocal lead screw, the fly leaf is established in nut seat one end and is connected with nut seat bearing, be equipped with tensioning ware on the second belt.

The invention also comprises a treatment method of the PTA chemical wastewater excess sludge treatment device, which comprises the following steps:

the method comprises the following steps: injecting a mixture of wastewater and sludge into a first pipeline in a treatment box through a liquid inlet pipe, so as to enter a movable box through a corrugated pipe and a second pipeline, simultaneously driving a first blade to rotate by the impact force of the mixture so as to enable a second rotating shaft to rotate, driving a third bevel gear to rotate by a fourth bevel gear, driving a second threaded cylinder to rotate by the third bevel gear, enabling a second threaded rod in threaded connection with the second threaded cylinder to move downwards, driving a pressing plate to move downwards, driving the second pipeline, the movable rod, a connecting plate to move downwards and the corrugated pipe to extend by the downward movement of the pressing plate, enabling a first rotating shaft to rotate by the rotation of the second rotating shaft through the transmission of a first belt pulley and a first belt so as to drive a second bevel gear and a first gear to rotate, enabling the first threaded cylinder to drive a first threaded rod in threaded connection with the first threaded cylinder to move upwards, the movable box is driven to move upwards, and the movable box and the pressing plate perform bidirectional extrusion on the mixture between the movable box and the pressing plate, so that the wastewater in the sludge is extruded out and falls into the conical hopper through the filter screen;

step two: when the connecting plate touches the delay switch, the first switch valve on the liquid inlet pipe is closed, the mixture is stopped being conveyed, the first blade stops rotating at the moment, and meanwhile, the spring generates elasticity when the first threaded barrel rotates, so that the first threaded barrel reversely rotates back to the original position under the elasticity after the first blade stops, the extrusion mechanism is recovered to the original state, the delay switch triggers the switch, the second electric valve on the liquid falling pipe is opened, and the wastewater in the conical hopper flows into the liquid falling pipe;

step three: the gravitational potential energy of the wastewater impacts the second blade to enable the second blade to rotate, so that the third rotating shaft is driven to rotate, the nut seat is driven to rotate through the transmission of the second belt pulley and the second belt, the reciprocating screw rod is driven to move, the push plate is driven to move in the movable box to scrape sludge, the sludge pushes the side plate to open and then fall into the sludge box, the switch on the fixed plate is touched to close the switch valve after the reciprocating screw rod returns to the original position, and the first switch valve is started after the time delay switch is delayed to open for repeated treatment operation;

step four: drive the second gear rotation during first gear revolve, the output shaft that drives the motor through the fourth pivot rotates and generates electricity, thereby for the electrothermal tube power supply, the heat that the electrothermal tube produced passes through heat conduction shell and heat conduction pole transmission to mud within a definite time, remain in the mud evaporation of water and get into in the heat transfer case through the third pipeline, carry out the heat exchange through the heat-conducting plate with the cooling water of joining in advance in the heat transfer case, make vapor condense into the drop of water and fall into in the waste water tank through the fourth pipeline, the at utmost carries out solid-liquid separation.

The embodiment of the invention has the following advantages:

1. according to the invention, the first blade is driven to rotate by gravitational potential energy of wastewater and sludge, so that the pressing plate moves downwards and the movable box moves upwards, and the movable box and the pressing plate perform bidirectional extrusion on a mixture between the movable box and the pressing plate, so that wastewater in the sludge is extruded out and falls into the conical hopper through the filter screen;

2. according to the invention, the second gear is rotated through the rotation of the first blade, the output shaft of the motor is driven to rotate through the fourth rotating shaft to generate electricity, so that power is supplied to the electric heating tube, heat generated by the electric heating tube is transferred to the sludge through the heat conduction shell and the heat conduction rod, residual moisture in the sludge is evaporated and enters the heat exchange box through the third pipeline, and is subjected to heat exchange with cooling water which is added in the heat exchange box in advance through the heat conduction plate, so that water vapor is condensed into water drops and falls into the wastewater box through the fourth pipeline, and solid-liquid separation is carried out to the maximum extent.

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. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the effects and the achievable by the present invention, should still fall within the range that the technical contents disclosed in the present invention can cover.

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a schematic view of the internal structure of the treatment tank according to the present invention;

FIG. 5 is an enlarged view of portion A of FIG. 4 in accordance with the present invention;

FIG. 6 is a perspective view, partly in section, of the removable cassette and platen provided by the present invention;

FIG. 7 is a schematic view of the internal structure of the treatment tank according to the present invention;

FIG. 8 is a schematic perspective view of a heat conducting shell and a heat conducting rod according to the present invention;

in the figure: 1 treatment box, 2 waste water box, 3 sludge box, 4 movable box, 5 first threaded rod, 6 first threaded cylinder, 7 first bevel gear, 8 second bevel gear, 9 first gear, 10 first rotating shaft, 11 pressing plate, 12 second threaded rod, 13 second threaded cylinder, 14 third bevel gear, 15 fourth bevel gear, 16 second rotating shaft, 17 first belt pulley, 18 first belt, 19 first pipeline, 20 first blade, 21 corrugated pipe, 22 second pipeline, 23 liquid inlet pipe, 24 movable rod, 25 connecting plate, 26 mounting plate, 27 switch, 28 spring, 29 filter screen, 30 conical hopper, 31 liquid dropping pipe, 32 third rotating shaft, 33 second blade, 34 pressing plate, 35 reciprocating screw rod, 36 nut seat, 37 second belt pulley, 38 second belt, 39 second gear, 40 fourth rotating shaft, 41 motor, 42 heat conducting shell, 43 electric heating pipe, 44 heat conducting rod, 45 heat exchange box, 46 heat conducting plate, 41 motor, 47 a third pipeline, 48 switches, 49 a fixed plate, 50 a partition plate, 51 a side plate, 52 openings, 53 a rubber frame, 54 a fourth pipeline, 55 ports and 56 a movable plate.

Detailed Description

The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

with reference to the attached drawings 1-6 of the specification, the device for treating the residual sludge of the PTA chemical wastewater comprises a treatment tank 1, a wastewater tank 2 and a sludge tank 3, wherein the wastewater tank 2 is fixedly arranged at the bottom end of the treatment tank 1 through four connecting rods, the sludge tank 3 is fixedly arranged at one side of the treatment tank 1, an extrusion mechanism is arranged inside the treatment tank 1, a sludge scraping mechanism is arranged inside the wastewater tank 2, and a heating mechanism is arranged inside the sludge tank 3;

the extrusion mechanism comprises a movable box 4, the movable box 4 is arranged inside the treatment box 1 and is contacted with the inner wall of the treatment box 1, a first threaded rod 5 is fixedly arranged at the bottom end of the movable box 4, a first threaded barrel 6 is arranged at the outer end of the first threaded rod 5 through threads, the first threaded barrel 6 is arranged at the bottom end inside the treatment box 1 and is movably connected with the treatment box 1 through a bearing, a first bevel gear 7 is fixedly arranged at the outer end of the first threaded barrel 6, a second bevel gear 8 is meshed with the bottom of the first bevel gear 7, a first rotating shaft 10 is fixedly arranged at one end of the second bevel gear 8, a first gear 9 is fixedly arranged at the outer end of the first rotating shaft 10, the first gear 9 is arranged at one end of the second bevel gear 8, the first rotating shaft 10 is arranged inside the treatment box 1 and extends out of the other side of the treatment box 1 and is movably connected with the treatment box 1 through a bearing, a clockwork spring 28 is arranged at the outer end of the first threaded barrel 6, the spiral spring 28 is arranged at the bottom of the second bevel gear 8, two ends of the spiral spring 28 are respectively fixedly connected with the outer end of the first threaded cylinder 6 and the inner bottom end of the treatment box 1, the movable box 4 is internally provided with a pressing plate 11, the top end of the pressing plate 11 is fixedly provided with a second threaded rod 12, the second threaded rod 12 penetrates through the top end of the movable box 4, the outer end of the second threaded rod 12 is provided with a second threaded cylinder 13 through threads, the second threaded cylinder 13 is arranged at the inner top end of the treatment box 1 through a bearing, the outer end of the second threaded cylinder 13 is fixedly provided with a third bevel gear 14, the top end of the third bevel gear 14 is engaged with a fourth bevel gear 15, one end of the fourth bevel gear 15 is fixedly provided with a second rotating shaft 16, the second rotating shaft 16 is arranged inside the treatment box 1 and extends out of the other side of the treatment box 1, and the second rotating shaft 16 is movably connected with the treatment box 1 through a bearing,

second pivot

16 and 10 outer ends of first pivot are all fixed and are equipped with first belt pulley 17, first belt pulley 17 establishes at 1 opposite side of processing case, two first belt pulley 17 is connected through first belt 18, it is fixed and is equipped with first pipeline 19 to handle the inside top of case 1, first pipeline 19 is established in 16 outer ends of second pivot, first pipeline 19 passes through sealed bearing swing joint with

second pivot

16, 19 bottom mountings of first pipeline are equipped with

bellows

21, 21 bottom mountings of bellows are equipped with second pipeline 22, second pipeline 22 runs through movable box 4 top and

clamp plate

11, 16 outer ends of second pivot are fixed and are equipped with a plurality of first blades 20, first blade 20 is established inside first pipeline 19, movable box 4 bottom is inlayed and is had filter screen 29.

Further, handle 1 fixed feed liquor pipe 23 that is equipped with in top of case, be convenient for carry the mixture, feed liquor pipe 23 just establishes on 20 top right sides of first blade with 19 inside intercommunications in first pipeline, the fixed first motorised valve that is equipped with on

feed liquor pipe

23, 11 fixed movable rod 24 that is equipped with in top of clamp plate, movable rod 24 runs through 4 tops of movable box and establishes in second threaded rod 12 one side, the fixed even board 25 that is equipped with in 24 outer ends of movable rod, even board 25 bottom is equipped with delay switch 27, delay switch 27 is fixed to be established on 4 tops of movable box, delay switch 27 and first motorised valve electric connection are convenient for control the injection of the break-make of first motorised valve with the control mixture.

The treatment method of the treatment device for the excess sludge of the PTA chemical wastewater in the embodiment comprises the following specific steps:

the method comprises the following steps: injecting a mixture of wastewater and sludge into a first pipeline 19 in a treatment box 1 through a liquid inlet pipe 23, so as to enter a movable box 4 through a corrugated pipe 21 and a second pipeline 22, wherein the impact force of the mixture drives a first blade 20 to rotate so as to drive a second rotating shaft 16 to rotate, so as to drive a third bevel gear 14 to rotate through a fourth bevel gear 15, the third bevel gear 14 drives a second threaded cylinder 13 to rotate, so as to drive a second threaded rod 12 in threaded connection with the second threaded cylinder 13 to move downwards, so as to drive a pressing plate 11 to move downwards, the pressing plate 11 moves downwards to drive the second pipeline 22, the movable rod 24 and a connecting plate 25 to move downwards and the corrugated pipe 21 to extend, and meanwhile, the second rotating shaft 16 rotates to drive a first rotating shaft 10 to rotate through the transmission of a first belt pulley 17 and a first belt 18 so as to drive a second bevel gear 8 and a first gear 9 to rotate, so as to drive a first bevel gear 7 to rotate, the first threaded cylinder 6 is rotated to drive the first threaded rod 5 in threaded connection with the first threaded cylinder to move upwards, so that the movable box 4 is driven to move upwards, the movable box 4 and the pressing plate 11 perform bidirectional extrusion on the mixture between the movable box and the pressing plate, so that the wastewater in the sludge is extruded out and falls into the conical hopper 30 through the filter screen 29, and the solid-liquid separation efficiency is improved through the bidirectional extrusion;

step two: when the connecting plate 25 touches the delay switch 27, the first switch valve on the liquid inlet pipe 23 is closed, the mixture is stopped being conveyed, at this time, the first blade 20 stops rotating, and simultaneously the first threaded barrel 6 generates an elastic force for the clockwork spring 28 when rotating, so that the first threaded barrel 6 reversely rotates back to the original position under the elastic force after the first blade 20 stops, the extruding mechanism is recovered, the delay switch 27 triggers the switch 48, the second electric valve on the liquid falling pipe 31 is opened, and the wastewater in the conical hopper 30 flows into the liquid falling pipe 31.

Example 2:

referring to the attached drawings 1-6 of the specification, in the embodiment of the device for treating the excess sludge of PTA chemical wastewater, the sludge scraping mechanism includes a partition plate 50, the partition plate 50 is fixedly disposed on the inner wall of the treatment tank 1, the partition plate 50 is disposed at the bottom of the movable tank 4, the first threaded rod 5 penetrates through the partition plate 50, the bottom of the partition plate 50 is provided with a conical hopper 30, the conical hopper 30 penetrates through the partition plate 50 and is disposed at one side of the first gear 9, the bottom of the conical hopper 30 is fixedly provided with a liquid dropping pipe 31, the liquid dropping pipe 31 is disposed at the rear side of the first rotating shaft 10, one end of the liquid dropping pipe 31 penetrates through the bottom of the treatment tank 1 to be fixedly connected with the top of the wastewater tank 2 and communicated with the interior of the wastewater tank 2, the interior of the wastewater tank 2 is provided with a third rotating shaft 32, one end of the third rotating shaft 32 is movably connected with one side wall of the interior of the wastewater tank 2 through a bearing, the other end of the third rotating shaft 32 extends out of one side of the wastewater tank 2, third pivot 32 outer end is fixed and is equipped with a plurality of second blades 33, second blade 33 is established in waste water tank 2 inside and is established in the liquid dropping pipe 31 bottom front side, the inside lateral wall of movable box 4 inlays there is push pedal 34, push pedal 34 contacts and establishes in clamp plate 11 bottom with movable box 4 inside front and back both walls, push pedal 34 one side is equipped with reciprocal lead screw 35, reciprocal lead screw 35 runs through movable box 4 one side and extends to handle 1 opposite side of case, reciprocal lead screw 35 outer end is equipped with nut seat 36, nut seat 36 and third pivot 32 outer end are all fixed and are equipped with second belt pulley 37, two second belt pulley 37 passes through second belt 38 interconnect, nut seat 36 is established at first belt 18 inboardly.

Further, even board 25 top is equipped with mounting panel 26, mounting panel 26 is fixed to be established on the inside top of handling case 1, handle the fixed plate 49 that is equipped with of 1 opposite side of case, fixed plate 49 is established at first belt 18 and second belt 38 inboardly, fixed plate 49 is established in reciprocal lead screw 35 one side, fixed plate 49 one side and mounting panel 26 bottom all are equipped with switch 48, two switch 48 sets up to two accuse switches, the fixed second motorised valve that is equipped with on the liquid dropping pipe 31, second motorised valve and two accuse switch electric connection, the break-make of control second motorised valve are convenient for control waste water among the toper fill 30 and flow down.

Further, 4 opposite sides of activity case are equipped with curb plate 51, the curb plate 51 rear end passes through the spring hinge with 4 rear ends of activity case and articulates, handle 1 one side of case and seted up opening 52, opening 52 is established in curb plate 51 one side and is established inside sludge box 3, opening 52 is established at baffle 50 and heat conduction shell 42 top, and the mud of being convenient for is scraped and is fallen into sludge box 3 in, the fixed rubber frame 53 that is equipped with in clamp plate 11 outer end, rubber frame 53 contacts with 4 inner walls of activity case, prevents that waste water and mud from getting into the clamp plate 11 top through the clearance between clamp plate 11 and the activity case 4 and being difficult to clear up.

Furthermore, a through opening 55 is formed in the other side of the treatment box 1, the through opening 55 is formed between the second rotating shaft 16 and the fixed plate 49, a movable plate 56 is connected to the inside of the through opening 55 through a sliding rail, the movable plate 56 is arranged at the outer end of the reciprocating screw rod 35 and is in contact with the reciprocating screw rod 35, the movable plate 56 is arranged at one end of the nut seat 36 and is in bearing connection with the nut seat 36, the movable box 4 moves up and down to drive the movable plate 5 to move up and down so as to drive the reciprocating screw rod 35 and the nut seat 36 to move up and down, a tensioner is arranged on the second belt 38, and the tensioner is a commonly used holding device on a belt and chain transmission system, and is characterized in that the belt and a chain can have proper tension in the transmission process, so that the belt is prevented from slipping, or the synchronous belt is prevented from being dragged out due to tooth skipping and tooth dropping.

step three: the gravitational potential energy of the wastewater impacts the second blade 33 to rotate the second blade 33, so as to drive the third rotating shaft 32 to rotate, the nut seat 36 is rotated through the transmission of the second belt wheel 37 and the second belt 38, so that the reciprocating screw rod 35 moves, so as to drive the push plate 34 to move inside the movable box 4, sludge is scraped, the sludge pushes the side plate 51 to open and then fall into the sludge box 3, the switch 48 on the fixed plate 49 is touched to close the switch valve after the reciprocating screw rod 35 returns to the original position, and the delay switch 27 is started after being delayed to open and repeat the treatment operation of the first switch valve.

Example 3:

referring to the attached figures 2, 4, 7 and 8 of the specification, the heating mechanism of the treatment device for the excess sludge of PTA chemical wastewater of the embodiment includes an electric heating tube 43, a heat conducting shell 42 is disposed outside the electric heating tube 43, the heat conducting shell 42 is fixedly disposed at one side of the treatment tank 1 and is disposed inside the sludge tank 3, a plurality of heat conducting rods 44 are fixedly disposed at one side of the heat conducting shell 42, and the heat conducting rods 44 are disposed inside the sludge tank 3.

Further, the meshing of first gear 9 rear side has second gear 39, the fixed fourth pivot 40 that is equipped with of second gear 39 one end, fourth pivot 40 one end is equipped with motor 41, motor 41 is fixed to be established on handling the inside lateral wall of case 1, the output shaft and the fourth pivot 40 fixed connection of motor 41, it is equipped with branch to handle the inside back wall of case 1, branch is established at fourth pivot 40 rear side and is connected with fourth pivot 40 bearing, motor 41 and electrothermal tube 43 electric connection drive motor 41 through fourth pivot 40 and rotate and make motor 41 generate electricity for the power supply of electrothermal tube 43.

Further, fixed heat transfer case 45 that is equipped with in sludge box 3 one side, heat transfer case 45 through two connecting rods with handle 1 one side fixed connection of case, the inside fixed heat-conducting plate 46 that is equipped with of heat transfer case 45, heat transfer case 45 one side is equipped with third pipeline 47 with the fixed on sludge box 3 top, third pipeline 47 both ends communicate with inside and heat transfer case 45 of sludge box 3 respectively, fixed fourth pipeline 54 that is equipped with between heat transfer case 45 bottom and the 2 opposite sides of waste water tank, fourth pipeline 54 is established in heat-conducting plate 46 one side.

step four: the first gear 9 drives the second gear 39 to rotate when rotating, the output shaft of the motor 41 is driven to rotate through the fourth rotating shaft 40 to generate electricity, so that electricity is supplied to the electric heating tube 43, heat generated by the electric heating tube 43 is transmitted to the sludge through the heat conducting shell 42 and the heat conducting rod 44, residual moisture in the sludge is evaporated and enters the heat exchange box 45 through the third pipeline 47, heat exchange is carried out with cooling water added in the heat exchange box 45 in advance through the heat conducting plate 46, water vapor is condensed into water drops and falls into the wastewater tank 2 through the fourth pipeline 54, and solid-liquid separation is carried out to the maximum degree.

Most of power of the invention is derived from the gravitational potential energy of the wastewater, and only power supplies required for the work of the first electric valve, the second electric valve, the delay switch 27 and the switch 48 are needed, thereby greatly saving electric energy and reducing cost.

Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a PTA chemical wastewater excess sludge's processing apparatus, is including handling case (1), waste water tank (2) and sludge box (3), waste water tank (2) are fixed to be established in handling case (1) bottom through four connecting rods, sludge box (3) are fixed to be established in handling case (1) one side, its characterized in that: an extrusion mechanism is arranged in the treatment box (1), a sludge scraping mechanism is arranged in the waste water box (2), and a heating mechanism is arranged in the sludge box (3);

the extrusion mechanism comprises a movable box (4), the movable box (4) is arranged inside the treatment box (1) and is in contact with the inner wall of the treatment box (1), a first threaded rod (5) is arranged at the bottom end of the movable box (4), a first threaded barrel (6) is arranged at the outer end of the first threaded rod (5) through threads, the first threaded barrel (6) is arranged at the bottom end inside the treatment box (1) and is movably connected with the treatment box (1) through a bearing, a first bevel gear (7) is fixedly arranged at the outer end of the first threaded barrel (6), a second bevel gear (8) is meshed with the bottom of the first bevel gear (7), a first rotating shaft (10) is fixedly arranged at one end of the second bevel gear (8), the first rotating shaft (10) is arranged inside the treatment box (1) and extends out of the other side of the treatment box (1) and is connected with the inner wall of the treatment box (1) through a second rotating shaft (9), and the first rotating shaft (10) is arranged inside the treatment box (1) and extends out of the treatment box (1) The treatment box (1) is movably connected through a bearing, a clockwork spring (28) is arranged at the outer end of the first thread cylinder (6), the clockwork spring (28) is arranged at the bottom of the second bevel gear (8), two ends of the clockwork spring (28) are respectively fixedly connected with the outer end of the first thread cylinder (6) and the inner bottom of the treatment box (1), a pressing plate (11) is arranged inside the movable box (4), a second threaded rod (12) is fixedly arranged at the top end of the pressing plate (11), the second threaded rod (12) penetrates through the top end of the movable box (4), a second thread cylinder (13) is arranged at the outer end of the second threaded rod (12) through threads, the second thread cylinder (13) is arranged at the inner top end of the treatment box (1) through a bearing, a third bevel gear (14) is fixedly arranged at the outer end of the second thread cylinder (13), and a fourth bevel gear (15) is meshed with the top end of the third bevel gear (14), a second rotating shaft (16) is fixedly arranged at one end of the fourth bevel gear (15), the second rotating shaft (16) is arranged inside the processing box (1) and extends out of the other side of the processing box (1), the second rotating shaft (16) is movably connected with the processing box (1) through a bearing, first belt pulleys (17) are fixedly arranged at the outer ends of the second rotating shaft (16) and the first rotating shaft (10), the first belt pulleys (17) are arranged at the other side of the processing box (1), the two first belt pulleys (17) are connected through a first belt (18), a first pipeline (19) is fixedly arranged at the top end inside the processing box (1), the first pipeline (19) is arranged at the outer end of the second rotating shaft (16), the first pipeline (19) is movably connected with the second rotating shaft (16) through a sealing bearing, a corrugated pipe (21) is fixedly arranged at the bottom end of the first pipeline (19), a second pipeline (22) is fixedly arranged at the bottom end of the corrugated pipe (21), the second pipeline (22) penetrates through the top end of the movable box (4) and the pressing plate (11), a plurality of first blades (20) are fixedly arranged at the outer end of the second rotating shaft (16), the first blades (20) are arranged in the first pipeline (19), and a filter screen (29) is embedded at the bottom end of the movable box (4);

the mud scraping mechanism comprises a partition plate (50), the partition plate (50) is fixedly arranged on the inner wall of the treatment box (1), the partition plate (50) is arranged at the bottom of the movable box (4), a first threaded rod (5) penetrates through the partition plate (50), a conical hopper (30) is arranged at the bottom of the partition plate (50), the conical hopper (30) penetrates through the partition plate (50) and is arranged on one side of a first gear (9), a liquid dropping pipe (31) is fixedly arranged at the bottom end of the conical hopper (30), the liquid dropping pipe (31) is arranged on the rear side of a first rotating shaft (10), one end of the liquid dropping pipe (31) penetrates through the bottom end of the treatment box (1) and is fixedly connected with the top end of the waste water box (2) and is communicated with the inside of the waste water box (2), a third rotating shaft (32) is arranged inside the waste water box (2), one end of the third rotating shaft (32) is movably connected with one side wall of the inside of the waste water box (2) through a bearing, and the other end of the third rotating shaft (32) extends out of one side of the waste water box (2), a plurality of second blades (33) are fixedly arranged at the outer end of the third rotating shaft (32), the second blades (33) are arranged in the waste water tank (2) and are arranged at the front side of the bottom of the liquid dropping pipe (31), a push plate (34) is embedded in one side wall in the movable box (4), the push plate (34) is contacted with the front wall and the rear wall in the movable box (4) and is arranged at the bottom of the press plate (11), one side of the push plate (34) is provided with a reciprocating screw rod (35), the reciprocating screw rod (35) penetrates through one side of the movable box (4) and extends out of the other side of the treatment box (1), reciprocal lead screw (35) outer end is equipped with nut seat (36), nut seat (36) and third pivot (32) outer end all are fixed and are equipped with second belt pulley (37), two second belt pulley (37) are through second belt (38) interconnect, nut seat (36) are established at first belt (18) inboardly.

2. The device for treating the residual sludge of the PTA chemical wastewater in accordance with claim 1, wherein: handle fixed feed liquor pipe (23) that is equipped with in case (1) top, feed liquor pipe (23) just establish first blade (20) top right side with first pipeline (19) inside intercommunication, the fixed first motorised valve that is equipped with on feed liquor pipe (23), clamp plate (11) top is fixed and is equipped with movable rod (24), movable rod (24) run through movable box (4) top and establish in second threaded rod (12) one side, movable rod (24) outer end is fixed and is equipped with even board (25), even board (25) bottom is equipped with delay switch (27), delay switch (27) are fixed to be established on movable box (4) top, delay switch (27) and first motorised valve electric connection.

3. The device for treating the residual sludge of the PTA chemical wastewater in accordance with claim 1, wherein: the heating mechanism comprises an electric heating pipe (43), a heat conduction shell (42) is arranged on the outer side of the electric heating pipe (43), the heat conduction shell (42) is fixedly arranged on one side of the treatment box (1) and is arranged inside the sludge box (3), a plurality of heat conduction rods (44) are fixedly arranged on one side of the heat conduction shell (42), and the heat conduction rods (44) are arranged inside the sludge box (3).

4. The device of claim 3, wherein the device comprises: first gear (9) rear side meshing has second gear (39), second gear (39) one end is fixed and is equipped with fourth pivot (40), fourth pivot (40) one end is equipped with motor (41), motor (41) are fixed to be established on handling the inside lateral wall of case (1), the output shaft and the fourth pivot (40) fixed connection of motor (41), it is equipped with branch to handle the inside back wall of case (1), branch is established at fourth pivot (40) rear side and is connected with fourth pivot (40) bearing, motor (41) and electrothermal tube (43) electric connection.

5. The device for treating the residual sludge of the PTA chemical wastewater in accordance with claim 1, wherein: sludge case (3) one side is fixed and is equipped with heat transfer case (45), heat transfer case (45) through two connecting rods with handle case (1) one side fixed connection, heat transfer case (45) inside fixed heat-conducting plate (46) that is equipped with, heat transfer case (45) one side is fixed with third pipeline (47) with sludge case (3) top, third pipeline (47) both ends communicate with inside and heat transfer case (45) of sludge case (3) respectively, it is fixed between heat transfer case (45) bottom and waste water tank (2) opposite side to be equipped with fourth pipeline (54), fourth pipeline (54) are established in heat-conducting plate (46) one side.

6. The device for treating the residual sludge of the PTA chemical wastewater in accordance with claim 1, wherein: even board (25) top is equipped with mounting panel (26), mounting panel (26) are fixed to be established on handling the inside top of case (1), it is fixed and is equipped with fixed plate (49) to handle case (1) opposite side, establish first belt (18) and second belt (38) inboard fixed plate (49), establish in reciprocal lead screw (35) one side fixed plate (49), fixed plate (49) one side and mounting panel (26) bottom all are equipped with switch (48), two switch (48) set up to two control switches, the fixed second motorised valve that is equipped with on dropping liquid pipe (31), second motorised valve and two control switch electric connection.

7. The device of claim 3, wherein the device comprises: activity case (4) opposite side is equipped with curb plate (51), curb plate (51) rear end passes through the spring hinge with activity case (4) rear end and articulates, handle case (1) one side and seted up opening (52), opening (52) are established in curb plate (51) one side and are established inside sludge box (3), establish at baffle (50) and heat conduction shell (42) top opening (52), clamp plate (11) outer end is fixed and is equipped with rubber frame (53), rubber frame (53) contact with activity case (4) inner wall.

8. The device of claim 6, wherein the device comprises: handle case (1) opposite side and seted up through-port (55), establish between second pivot (16) and fixed plate (49) through-port (55), there is fly leaf (56) through sliding rail connection inside through port (55), fly leaf (56) are established at reciprocal lead screw (35) outer end and are contacted with reciprocal lead screw (35), fly leaf (56) are established in nut seat (36) one end and are connected with nut seat (36) bearing, be equipped with tensioning ware on second belt (38).

9. The apparatus of any one of claims 1-8, wherein: the treatment method of the treatment device for the PTA chemical wastewater excess sludge comprises the following specific steps:

the method comprises the following steps: injecting a mixture of wastewater and sludge into a first pipeline (19) in a treatment box (1) through a liquid inlet pipe (23), so that the mixture enters a movable box (4) through a corrugated pipe (21) and a second pipeline (22), simultaneously driving a first blade (20) to rotate by the impact force of the mixture so as to enable a second rotating shaft (16) to rotate, driving a third bevel gear (14) to rotate through a fourth bevel gear (15), driving a second threaded barrel (13) to rotate through the third bevel gear (14), enabling a second threaded rod (12) in threaded connection with the second threaded barrel (13) to move downwards, driving a pressing plate (11) to move downwards, driving the second pipeline (22), the movable rod (24), a connecting plate (25) to move downwards and extending the corrugated pipe (21), and enabling a first rotating shaft (10) to rotate through the transmission of a first belt pulley (17) and a first belt (18) so as to drive a second rotating shaft (10) to drive a gear (8) and a second belt (18) The first gear (9) rotates to drive the first bevel gear (7) to rotate, so that the first threaded cylinder (6) rotates to drive the first threaded rod (5) in threaded connection with the first threaded cylinder to move upwards and further drive the movable box (4) to move upwards, the movable box (4) and the pressing plate (11) perform bidirectional extrusion on a mixture between the movable box and the pressing plate, and wastewater in sludge is extruded out to fall into the conical hopper (30) through the filter screen (29);

step two: when the connecting plate (25) touches the delay switch (27), the first switch valve on the liquid inlet pipe (23) is closed, the mixture is stopped being conveyed, at the moment, the first blade (20) stops rotating, and simultaneously the first thread cylinder (6) enables the clockwork spring (28) to generate elastic force when rotating, so that the first thread cylinder (6) reversely rotates back to the original position under the elastic force after the first blade (20) stops, the extrusion mechanism is recovered to the original state, the delay switch (27) triggers the switch (48), the second electric valve on the liquid dropping pipe (31) is opened, and the wastewater in the conical hopper (30) flows into the liquid dropping pipe (31);

step three: the gravitational potential energy of the wastewater impacts the second blade (33) to enable the second blade (33) to rotate, so that the third rotating shaft (32) is driven to rotate, the nut seat (36) is driven to rotate through the transmission of the second belt pulley (37) and the second belt (38), the reciprocating screw rod (35) is driven to move, so that the push plate (34) is driven to move inside the movable box (4), sludge is scraped, the sludge pushes the side plate (51) to open and then falls into the sludge box (3), when the reciprocating screw rod (35) returns to the original position, the switch (48) on the fixed plate (49) is touched to close the switch valve, and the time delay switch (27) is started after time delay to enable the first switch valve to be opened for repeated treatment;

step four: the first gear (9) drives the second gear (39) to rotate when rotating, an output shaft of the motor (41) is driven to rotate through the fourth rotating shaft (40) to generate electricity, so that power is supplied to the electric heating tube (43), heat generated by the electric heating tube (43) is transmitted to a sludge room through the heat conducting shell (42) and the heat conducting rod (44), residual moisture in the sludge is evaporated and enters the heat exchange box (45) through the third pipeline (47), and heat exchange is carried out on the residual moisture and cooling water which is added in the heat exchange box (45) in advance through the heat conducting plate (46), so that water vapor is condensed into water drops which fall into the waste water tank (2) through the fourth pipeline (54), and solid-liquid separation is carried out to the maximum extent.