CN201037728Y

CN201037728Y - Combined sludge drying device

Info

Publication number: CN201037728Y
Application number: CNU2007201087474U
Authority: CN
Inventors: 张志峰; 蔡芝斌; 魏国良; 吴季培
Original assignee: SANGLING ENVIRONMENT ENERGY INST SHANGHAI; ZHEJIANG RONGHUAI ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY Co Ltd; SHAOXING WATER TREATMENT DEVELOPMENT Co Ltd
Current assignee: SANGLING ENVIRONMENT ENERGY INST SHANGHAI; ZHEJIANG RONGHUAI ENVIRONMENTAL PROTECTION SCIENCE AND TECHNOLOGY Co Ltd; SHAOXING WATER TREATMENT DEVELOPMENT Co Ltd
Priority date: 2007-04-28
Filing date: 2007-04-28
Publication date: 2008-03-19
Anticipated expiration: 2017-04-28

Abstract

The utility model discloses a combined sludge drying device which comprises a drying chamber, wherein, an initial shaping device, a first conveying device connected with the initial shaping devices, a secondary sizing device connected with the first conveying device, a second conveying device connected with the secondary sizing device and a discharge outlet connected with the second conveying device are arranged on a machine frame positioned inside the drying chamber in turn. The device also comprises a heat pump device, wherein, the heat pump device is arranged inside the drying chamber and mainly comprises an evaporator, a condenser, a throttle device and a compressor, which are connected through pipes to form a circulatory system. The utility model adopts the combination of heat pump and solar energy to dry the sludge, which leads the energy to be fully and rationally utilized, so as to reduce energy consumption greatly and has good environmental protection performance.

Description

Association type sludge drying device

Technical field

The utility model relates to a kind of sludge treatment device, particularly a kind of association type sludge drying device.

Background technology

Sewage and mud are two systems that solve the water pollution problems tight association, in sewage disposal process, pass through purified treatment on the one hand, make sewage reach discharge standard, a large amount of bacteriums and most of parasite then are deposited in the mud, also be deposited in the mud on the viral particle that can adsorb in the mud, therefore how to dispose the mud that produces in the sewage disposal process safely, with the secondary pollution that prevents that mud from causing, become the difficult problem that water treatment field faces jointly, in the practice, from the mud that sewage treatment plant produces, moisture content still reaches about 80% through the institute of the mud cake behind the mechanical dehydration.Because its water content is big, and contains a large amount of bacteriums and virus, if direct landfill or throw aside then causes pollute the serious second time; If adopt the method for burning, then be difficult for burning because of moisture content is high.Therefore, must carry out drying and other treatment to mud, its water content is reduced to about 30%, think that sludge incineration and other methods of disposal of further carrying out provide processing in early stage means, at present, in the existing sewage treatment facility in the whole nation, owing to there are more problems such as investment is big, operating cost, management.Sludge drying equipment does not obtain development and application as yet, therefore, develops a kind of high efficiency, sludge drying equipment cheaply, realizes sewage sludge harmlessness, minimizing and resource, is the water treatment field urgent problem.

The utility model content

For addressing the above problem, the purpose of this utility model is to provide the association type sludge drying device of a kind of energy high efficiency, low energy consumption.

The technical scheme that the utility model is taked for achieving the above object is: a kind of association type sludge drying device, comprise hothouse, the initial shaping device is installed on the frame in hothouse successively, first conveyer that links to each other with the initial shaping device, the secondary calibrator that is connected with first conveyer, second conveyer that links to each other with the secondary calibrator, the discharging opening that links to each other with second conveyer, it is characterized in that: also comprise heat pump assembly, heat pump assembly is installed in the hothouse, mainly by evaporimeter, condenser, throttling arrangement, compressor is formed, evaporimeter, condenser, throttling arrangement, between the compressor by the pipeline circulatory system that is formed by connecting.

Of the present utility modelly further be set to:

Described first conveyer is made up of two-layer transmission guipure.

Described second conveyer transmits guipure by five layers and forms.

Described initial shaping device, post forming device are the roller press type make-up machine.

Also be provided with solar attachment in the described hothouse, solar attachment mainly is made up of glass plate that is installed in hothouse top and side and the solar energy receiving chamber that is arranged on relevant position in the hothouse, be provided with the solar heat-preservation material in solar energy receiving chamber, can absorb the conversion of solar energy that enters from glass plate is that heat energy is used.Also be provided with electric heater unit in hothouse, electric heater unit mainly is made up of electric heater and some circulating fans, can provide heat energy in the heat energy deficiency in cloudy day or hothouse.

The beneficial effects of the utility model are: (1) energy consumption cost is low: the utility model adopts heat pump-solar united box-like dewatered sludge, reclaim the latent heat of damp-heat air by being in operation, and the cooperation solar-heating, make energy obtain fully and rationally utilizing, energy consumption is reduced greatly; (2) feature of environmental protection is good: because the overall process of heat pump dewatered sludge is to carry out in closed system, does not need towards periphery the environment hydrofuge and discharge harmful, gas frowzy, the mud after the mummification has become the odorless granulated fertilizer, has favorable environment protection; (3) the sludge drying quality is good: the drying medium in the heat pump drying device is in the circulation of the space of sealing; Be not subjected to the influence of extraneous weather conditions, all even runnings under identical conditions throughout the year, so dry mass is stable, the moisture content of dry finished product is even.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is a workflow diagram of the present utility model;

Fig. 4 is a fundamental diagram of the present utility model.

The specific embodiment

Please refer to Fig. 1, structure of the present utility model shown in Figure 2, comprise hothouse 1, hothouse 1 adopts insulation material to build up, frame 2 is installed in hothouse 1, initial shaping device 3 is installed on frame 2 successively, first conveyer 4 that links to each other with initial shaping device 3, first conveyer 4 is made up of two-layer conveyer belt, the secondary calibrator 5 that is connected with first conveyer 4, second conveyer 6 that links to each other with secondary calibrator 5, second conveyer 6 is made up of five layers of conveyer belt, the below that discharging opening 7 is located at hothouse 1 links to each other with second conveyer 6, first conveyer 4 links to each other with transmission system 15 with second conveyer 6, heat pump assembly is mainly by evaporimeter 81, condenser 82, throttling arrangement 83, compressor 84 is formed, evaporimeter 81, condenser 82 is located between first conveyer 4 and second conveyer 6, throttling arrangement 83, compressor 84 is located at the below of second conveyer 6, the bottom of hothouse 1, evaporimeter 81, condenser 82, throttling arrangement 83, between the compressor 84 by the pipeline heat pump circulating system that is formed by connecting, for the air that increases in the hothouse 1 flows, obtain better drying effect, present embodiment is at first conveyer 4, dividing plate 9 has been installed between the secondary calibrator 5, dividing plate 9 is divided into hothouse 1, two-layer down, on, be provided with air door 10 between the lower floor, in hothouse 1, also be provided with solar energy receiving chamber 11, in solar energy receiving chamber 11, be provided with solar heat-preservation material 12, glass plate is all adopted in hothouse 1 top and side and solar energy receiving chamber 11 corresponding positions, enter the solar energy of solar energy receiving chamber 11 from glass plate, accumulated by solar heat-preservation material 12 and be used.In hothouse 1, also be provided with electric heater 13 and some circulating fans 14 compositions, can in cloudy day or hothouse, provide heat energy in the heat energy deficiency.

The course of work of the present utility model is as follows: the water content of coming out from the sewage sludge feed case is that about 80% wet mud is transported to initial shaping device 3, be rolled into semicircle strip by pre-profiling device 3, semicircle strip mud after the moulding is evenly distributed on the stainless steel guipure of first conveyer 4, the waste heat that utilizes solar energy receiving chamber 11 and hothouse 1 carries out predrying to the mud of low temperature and high relative humidity, after two-layer drying, the temperature of mud is brought up to about 60～65 ℃, the surface is cured to moisture content 73～76%, enter into post forming device 5 then and carry out moulding once more, through the mud of moulding once more under the promotion of circulating fan 14, stainless steel conveyor belt and wet mud that hot-air in the hothouse 1 passes second conveyer 6 carry out damp and hot exchange, on five layers of conveyer belt, hot blast from the generation of heat pump drying system, through circulating fan 14 to the vertical air-supply of conveyer belt, when passing several layers of Sheng dirt-carrying mud guipure, mud is carried out the flow-through type drying, and absorb material moisture content and turn back in the heat pump and dehumidify, sludge moisture content reaches 30%～40%6 after the mummification, by entering into feed box behind the discharging opening 7, whole drying process is finished.

With reference to shown in Figure 3, the workflow of heat pump assembly is as follows: the gas in the hothouse 1, it is the higher hot and humid gas of water content, its relative humidity is about ψ=70～80%, during evaporimeter 81 by heat pump, because evaporimeter 81 surface temperatures are lower than the air dew point temperature, not only reduced air temperature and evaporimeter 81 surfaces with the steam condensation under, outside the state discharge system with liquid water, gas leaves that evaporimeter 81 becomes low temperature and is moistening, compressed machine 84 superchargings of gas behind the dehumidification such as obtain at wet heating in condenser 82, improved gas temperature, also reduced simultaneously relative humidity, become xeothermic gas, under the effect of circulating fan 14, enter hothouse 1, in hothouse 1, xeothermic gas directly contacts with the material that is dried (wet mud), the heat of material mummification is provided, has also taken away moisture content simultaneously, thereby realize a heat pump drying circulation.

With reference to shown in Figure 4, the heat circulation of heat pump assembly is as follows: the working medium of operation in the system, in evaporimeter 81, draw the heat that hothouse 1 is discharged in the damp-heat air, flash to low-pressure steam from low-pressure liquid working medium, the steam of compressed machine 84 superchargings becoming HTHP; In condenser 82, the working substance steam of HTHP is emitted the air that the heat heating enters hothouse 1, and itself then becomes highly pressurised liquid from condensation of gas working medium; By throttling arrangement 83, liquid working substance produces blocking effect, has reduced pressure and temperature, become low pressure, low temperature liquid, enter in the evaporimeter 81 heat that absorbs hot and humid gas once again, circulate so repeatedly low-temperature heat quantity is transported in the high-temperature medium and go, form heat pump cycle.

Claims

1. association type sludge drying device, comprise hothouse (1), on the frame (2) in hothouse (1) initial shaping device (3) is installed successively, first conveyer (4) that links to each other with initial shaping device (3), the secondary calibrator (5) that is connected with first conveyer (4), second conveyer (6) that links to each other with secondary calibrator (5), the discharging opening (7) that links to each other with second conveyer (6), it is characterized in that: also comprise heat pump assembly, heat pump assembly is installed in the hothouse (1), mainly by evaporimeter (81), condenser (82), throttling arrangement (83), compressor (84) is formed, evaporimeter (81), condenser (82), throttling arrangement (83), between the compressor (84) by the pipeline circulatory system that is formed by connecting.

2. a kind of association type sludge drying device according to claim 1, it is characterized in that: described first conveyer (4) is made up of two-layer transmission guipure.

3. a kind of association type sludge drying device according to claim 1 is characterized in that: described second conveyer (6) transmits guipure by five layers and forms.

4. a kind of association type sludge drying device according to claim 1 is characterized in that: described initial shaping device (3), post forming device (5) all adopt the roller press type make-up machine.

5. a kind of association type sludge drying device according to claim 1, it is characterized in that: described hothouse also is provided with solar attachment in (1), solar attachment mainly is made up of glass plate that is installed in hothouse (1) top and side and the solar energy receiving chamber (11) that is arranged on relevant position in the hothouse, is built-in with solar heat-preservation material (12) at solar energy receiving chamber (11).

6. a kind of association type sludge drying device according to claim 1 is characterized in that: also be provided with electric heater unit in hothouse (1), electric heater unit mainly is made up of electric heater (13) and some circulating fans (14).

7. a kind of association type sludge drying device according to claim 1, it is characterized in that: described evaporimeter (81), condenser (82) are located between first conveyer (4) and second conveyer (6), throttling arrangement (83), compressor (84) are located at the below of second conveyer (6), the bottom of hothouse (1)