CN219526465U

CN219526465U - Multi-effect sludge drying equipment

Info

Publication number: CN219526465U
Application number: CN202223081533.6U
Authority: CN
Inventors: 郭明璨; 颜庭福; 蒋会清
Original assignee: Shandong Zhongtai Environmental Protection Equipment Co ltd
Current assignee: Shandong Zhongtai Environmental Protection Equipment Co ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-08-15
Anticipated expiration: 2032-11-21

Abstract

The utility model discloses multi-effect sludge drying equipment, which comprises a steam collecting cover, wherein the output end of the steam collecting cover is communicated with a steam conveying pipe, the output end of the steam conveying pipe is communicated with a filtering and purifying mechanism, the filtering and purifying mechanism comprises a filtering and purifying box, two ends of the filtering and purifying box are provided with openings through an inner cavity, an air sucking pump is arranged at the lower bottom of the inner cavity of the filtering and purifying box, a filter screen box is arranged in the filtering and purifying box, two ends of the filter screen box respectively penetrate through the corresponding openings and extend out of the filtering and purifying box, filter cotton is filled in the filter screen box, a filter screen cover is buckled in the inner cover of the filter screen box, the filter screen cover is in contact with the filter cotton and four screws are arranged between the filter screen cover and the filter screen box in a threaded manner, and the high efficiency of electro-osmotic dehydration and waste heat recovery generated in the electro-osmotic process are combined as sludge drying auxiliary means. The sludge drying cost is greatly reduced, the energy is saved, and the carbon emission is reduced.

Description

Multi-effect sludge drying equipment

Technical Field

The utility model relates to the technical field of sludge drying, in particular to multi-effect sludge drying equipment.

Background

Along with the acceleration of the industrialization process of society, a large amount of industrial sewage and domestic wastewater are discharged, so that the treatment of sludge generated by sewage treatment becomes very important, and related enterprises in China also become very important for the treatment of sludge. The sludge contains a large amount of organic matters, nitrogen and phosphorus substances, and harmful pollutants such as heavy metals, deadly bacteria and the like, so that the pollution of various harmful substances in the sludge is solved when the sludge is treated.

The sludge drying device in the market has the modes of cold drying, hot drying, electroosmosis and the like, the hot drying can generate pollution gas, and after the hot drying, the content of harmful substances such as heavy metals in the sludge is higher, so that secondary treatment is needed; the energy consumption of cold drying is high, equipment is expensive, equipment requirements are high, and sludge is not easy to treat in large quantities.

The gravity center of the electro-osmotic sludge drying device developed at present is placed on the electro-osmotic dehydration device, so that the temperature of the sludge and the moisture after electro-osmotic treatment is neglected to be higher, and the waste heat is recovered to save energy for secondary utilization. The sludge drying of a single low-temperature air heat pump has lower efficiency, does not adapt to the engineering current situation of large sludge amount and space shortage, like partial industrial sludge contains heavy metals and organic toxic substances, can not be well solved, and the generated steam possibly contains odor and toxic substances and needs subsequent equipment for purification so as to prevent secondary pollution.

Disclosure of Invention

The utility model aims to provide multi-effect sludge drying equipment which is used for solving the industrial problems of high cost or low efficiency of current sludge drying, greatly reducing the cost of sludge drying, saving energy and reducing carbon emission.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a multiple-effect sludge drying equipment, includes the steam collection cover, the output intercommunication steam delivery pipe of steam collection cover, the output intercommunication of steam delivery pipe has filtration purification mechanism, filtration purification mechanism includes filtration purification case, the opening has all been seted up to filtration purification case both ends through the inner chamber, the aspiration pump is installed to the inner chamber lower bottom of filtration purification case, filtration purification incasement is provided with the filter screen case, the both ends of filter screen case run through corresponding opening respectively and extend to outside the filtration purification case, the filter screen incasement is filled with the filter pulp, filter screen case inner cup has detained the filter screen lid, filter screen lid and filter pulp conflict and with the filter screen case between screw thread install four screws.

As a further scheme of the utility model: the output of aspiration pump communicates there is the back flow, the end intercommunication of back flow has main backward flow cover, the top of main backward flow cover is provided with the wire mesh conveyer, the delivery outlet of main backward flow cover sets up with wire mesh conveyer lower extreme position relatively, the top of wire mesh conveyer sets up a plurality of pairs of backward flow covers, a plurality of pair of backward flow covers's output all sets up with steam conveying pipe intercommunication.

As a further scheme of the utility model: the metal mesh conveyer one side is provided with the silt scraper blade, the below of steam collection cover is provided with anode roll and a plurality of live-rollers, the outer roll surface of anode roll and a plurality of live-rollers is jointly around the cover and is equipped with a cathode filter belt, silt scraper blade one end is close to the setting with cathode filter belt surface mutually, the silt scraper blade other end is relative with metal mesh conveyer upper position.

As a further scheme of the utility model: a fixed support is arranged between the two rotating rollers, and a water spraying pipe is arranged below the fixed support.

As a further scheme of the utility model: the fixed bolster one side is provided with auxiliary bearing frame, auxiliary bearing frame one side slidable mounting has auxiliary bearing, auxiliary bearing's top rotates installs the synchronizing roll, auxiliary bearing frame one end fixed mounting has flexible cylinder, the output and the auxiliary bearing fixed connection of flexible cylinder.

As a further scheme of the utility model: the lower part of the anode roller is provided with an internal water collecting bucket, and the lower parts of the water spray pipe and the auxiliary bearing seat are jointly provided with an external water collecting bucket.

As a further scheme of the utility model: the top of the filtering and purifying box penetrates through the inner cavity to form an air inlet hole, the air inlet hole is communicated with the steam conveying pipe, and handles are fixedly installed at two ends of the filtering and purifying box.

The utility model has the beneficial effects that:

firstly, the high efficiency of electro-osmotic dehydration is combined with the waste heat recovery generated in the electro-osmotic process as an auxiliary means for sludge drying, steam generated by electro-osmotic is collected for the subsequent treatment of the equipment to fully utilize the heat of gas, the energy consumption of the equipment is reduced, the concentration of organic matters in the sludge is low after treatment, COD and BOD can be lost along with the water loss in electro-osmotic, the corresponding treatment standard is achieved, compared with other sludge drying equipment in the market, the sludge drying efficiency of the electro-osmotic sludge drying equipment is higher, the water content of the sludge is reduced to 20% -15% after the extrusion work of the electro-osmotic and metal filter belts along with the cathode metal filter belt, and the COD, BOD and the like in the sludge are lower than those of the sludge subjected to heat drying and cold drying treatment;

secondly, adopt filtering purification mechanism to take part in condensation cycle's steam and filter and purify, filtering purification mechanism mainly includes filter screen case, filter screen lid and the filter pulp that can dismantle, especially, the filter screen case can run through in filtering purification case and remove, and then adjusts the contact position with steam, and then guarantee efficient filtration purification effect all the time, has the advantage of convenient reload.

Drawings

The present utility model is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic diagram of a filtration and purification mechanism according to the present utility model;

fig. 3 is a schematic view of the installation structure of the filter screen box and the filter screen cover of the utility model.

In the figure:

1. a steam collecting hood; 2. a steam delivery pipe; 4. a main reflow hood; 5. a wire mesh conveyor; 6. a secondary reflow cover; 7. a sludge scraper; 8. an anode roller; 9. a rotating roller; 10. a cathode filter belt; 11. a water collecting bucket is arranged in the water collecting tank; 12. a fixed bracket; 13. a water spray pipe; 14. an external water collecting bucket; 15. an auxiliary bearing seat; 16. an auxiliary bearing; 17. a synchronizing roller; 18. a telescopic cylinder;

3. a filtering and purifying mechanism; 31. a filtration purifying box; 32. an opening; 33. an air inlet hole; 34. an air extracting pump; 35. a filter screen box; 36. filtering cotton; 37. a filter screen cover; 38. a screw; 39. a handle.

Detailed Description

The technical solutions of the present utility model will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-3, a multi-effect sludge drying device comprises a steam collecting cover 1, wherein the output end of the steam collecting cover 1 is communicated with a steam conveying pipe 2, the output end of the steam conveying pipe 2 is communicated with a filter purifying mechanism 3, the filter purifying mechanism 3 comprises a filter purifying box 31, openings 32 are formed in the two ends of the filter purifying box 31 in a penetrating mode, an air pump 34 is arranged at the lower bottom of the inner cavity of the filter purifying box 31, a filter screen box 35 is arranged in the filter purifying box 31, the two ends of the filter screen box 35 respectively penetrate through the corresponding openings 32 and extend out of the filter purifying box 31, the position of the filter screen box 35 in the filter purifying box 31 can be conveniently adjusted by means of transverse drawing, filter cotton 36 is filled in the filter screen box 35, a filter screen cover 37 is buckled in the inner cover 35, the filter screen cover 37 is in contact with the filter cotton 36, four screws 38 are arranged between the filter cotton 36 and the filter screen box 35 in a threaded mode, and the filter cotton 36 is convenient to detach and replace;

as shown in fig. 1-3, more particularly, the output end of the air pump 34 is communicated with a return pipe, the tail end of the return pipe is communicated with a main return cover 4, a metal mesh conveyor 5 is arranged above the main return cover 4, the output port of the main return cover 4 is opposite to the lower bottom position of the metal mesh conveyor 5, a plurality of auxiliary return covers 6 are arranged above the metal mesh conveyor 5, the output ends of the auxiliary return covers 6 are all communicated with the steam conveying pipe 2, a unidirectional air inlet valve is arranged at the communication position of the auxiliary return covers 6 and the steam conveying pipe 2 (moist steam can only enter the steam conveying pipe 2 from the auxiliary return covers 6), a sludge scraper 7 is arranged at one side of the metal mesh conveyor 5, the sludge scraper 7 can scrape the sludge on the surface of the cathode filter belt 10 and roll down to the metal mesh conveyor 5, the lower part of the steam collecting cover 1 is provided with an anode roller 8 and a plurality of rotating rollers 9, the outer roller surfaces of the anode roller 8 and the rotating rollers 9 are sleeved with a cathode filter belt 10 in a surrounding mode, one end of a silt scraping plate 7 is close to the surface of the cathode filter belt 10, the other end of the silt scraping plate 7 is opposite to the upper position of the metal mesh conveyor 5, a fixed support 12 is arranged between the two rotating rollers 9, a spray pipe 13 is arranged below the fixed support 12, the output end of the spray pipe 13 is downwards arranged opposite to the position of the cathode filter belt 10, water spraying cleaning can be carried out on the cathode filter belt 10, an auxiliary bearing seat 15 is arranged on one side of the fixed support 12, an auxiliary bearing 16 is slidably arranged on one side of the auxiliary bearing seat 15, a synchronous roller 17 is rotatably arranged at the top end of the auxiliary bearing 16, a telescopic cylinder 18 is fixedly arranged at one end of the auxiliary bearing seat 15, the output of telescopic cylinder 18 and auxiliary bearing 16 fixed connection, the below of anode roll 8 is provided with built-in water catch bowl 11, the below of spray pipe 13 and auxiliary bearing frame 15 is provided with external water catch bowl 14 jointly, and built-in water catch bowl 11 mainly collects the moisture that electroosmosis, squeeze dewatering system deviate from, outside to equipment through the drain pipe, external water catch bowl 14 mainly collects the drip water that whole equipment produced in the sludge drying process, and the bottom sets up the evacuation mouth for the evacuation moisture, inlet port 33 has been seted up to the top of filtration purification case 31 run through the inner chamber, inlet port 33 and steam delivery pipe 2 intercommunication setting, the equal fixed mounting in both ends of filtration purification case 31 has handle 39, makes things convenient for whole filter screen case 35 of pull, filter pulp 36 and filter screen lid 37.

The working principle of the utility model is as follows:

firstly, the utility model has better performance in the aspects of energy conservation, emission reduction, environmental pollution treatment and life support than various sludge drying devices on the market. The electric energy is not converted into other energy, so that the consumption in the conversion process and the pollution to equipment selected for subsequent sludge drying treatment are reduced, and the energy consumption of a sludge dewatering device is effectively reduced because heating devices such as an air heat pump are not adopted, unlike the equipment on the market;

secondly, the steam generated in the electroosmosis process can be collected from the steam collecting cover 1 at the top, enters the filtering and purifying mechanism 3 through the steam conveying pipe 2, passes through the filtering and purifying structure consisting of the filter screen box 35, the filter cotton 36 and the filter screen cover 37 through the extraction of the air pump 34, and is sprayed out from the main reflux cover 4 through the reflux pipe, directly passes through the lower part of the metal mesh conveyor 5 and dries the wet sludge on the surface of the metal mesh conveyor 5, and the wet steam generated by the drying can enter the steam conveying pipe 2 again through the plurality of auxiliary reflux covers 6, so that compared with the hot dry gas of the sludge, the wet steam can be collected and circulated, and the environment around the equipment is not polluted; compared with other drying equipment, the COD and BOD of the wastewater separated by electroosmosis are lower, so that the subsequent treatment is facilitated, the burden of the subsequent procedure is lightened, the motion speed of a transmission part of the equipment is lower, the damage to surrounding personnel and objects is avoided, and the safety and the health are influenced;

finally, the anode roller 8 and the cathode filter belt 10 are powered to generate a direct current electric field, various water molecules in the sludge can move to the cathode under the action of the direct current electric field, and solids remain on the upper layer, so that solid-liquid separation is realized, bound water and interstitial water in the sludge can become free water in the process, wall breaking of the sludge is realized, specific resistance is reduced, and electroosmosis can be suitable for dehydration of various sludge in theory.

In the scheme, the electroosmosis sludge drying device and the multi-effect sludge drying equipment of the scheme can be combined with sludge low-temperature drying. And adding a sludge lifting device after the multi-effect sludge drying equipment, and conveying the sludge dried by the multi-effect sludge to a sludge low-temperature drying system. And recycling steam scattered in the multi-effect sludge process through a gas collecting device, separating various impurities in air after the recycled steam enters an air purifying device, refluxing the purified air to a sludge drying device, and discharging wastewater from a condensing device. In the system, an air heat pump is not used for heating, circulation is completed by means of heat carried by gas, and energy consumption of the air heat pump part is avoided, so that energy consumption of the equipment is effectively reduced.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.

Claims

1. The utility model provides a multiple-effect sludge drying equipment, its characterized in that, includes the steam collection cover, the output intercommunication steam delivery pipe of steam collection cover, the output intercommunication of steam delivery pipe has filtering purification mechanism, filtering purification mechanism includes the filtration purifying box, the opening has all been seted up to the inner chamber in filtration purifying box both ends, the aspiration pump is installed to the inner chamber lower bottom of filtration purifying box, be provided with the filter screen case in the filtration purifying box, the opening that corresponds is run through respectively at the both ends of filter screen case and extend to outside the filtration purifying box, filter screen incasement packing has the filter pulp, filter screen case inner cup has detained the filter screen lid, filter screen lid and filter pulp conflict and with the filter screen case between screw-thread mount have four screws.

2. The multi-effect sludge drying equipment according to claim 1, wherein the output end of the air pump is communicated with a return pipe, the tail end of the return pipe is communicated with a main return cover, a metal mesh conveyor is arranged above the main return cover, the output port of the main return cover is arranged opposite to the lower bottom position of the metal mesh conveyor, a plurality of auxiliary return covers are arranged above the metal mesh conveyor, and the output ends of the auxiliary return covers are all arranged in communication with a steam conveying pipe.

3. The multi-effect sludge drying equipment according to claim 2, wherein a sludge scraping plate is arranged on one side of the metal mesh conveyor, an anode roller and a plurality of rotating rollers are arranged below the steam collecting cover, a cathode filter belt is sleeved around the outer roller surfaces of the anode roller and the rotating rollers, one end of the sludge scraping plate is arranged close to the surface of the cathode filter belt, and the other end of the sludge scraping plate is opposite to the upper position of the metal mesh conveyor.

4. A multi-effect sludge drying apparatus as claimed in claim 3, wherein a fixed bracket is provided between the two rotating rollers, and a water spray pipe is installed below the fixed bracket.

5. The multi-effect sludge drying equipment according to claim 4, wherein an auxiliary bearing seat is arranged on one side of the fixed support, an auxiliary bearing is slidably arranged on one side of the auxiliary bearing seat, a synchronous roller is rotatably arranged at the top end of the auxiliary bearing seat, a telescopic cylinder is fixedly arranged at one end of the auxiliary bearing seat, and the output end of the telescopic cylinder is fixedly connected with the auxiliary bearing.

6. The multi-effect sludge drying apparatus according to claim 5, wherein an internal water collecting bucket is arranged below the anode roller, and an external water collecting bucket is arranged below the water spraying pipe and the auxiliary bearing seat.

7. The multi-effect sludge drying equipment according to claim 1, wherein the top end of the filtering and purifying box is provided with an air inlet hole penetrating through the inner cavity, the air inlet hole is communicated with the steam delivery pipe, and handles are fixedly arranged at two ends of the filtering and purifying box.