CN213865892U

CN213865892U - Drying system and sludge drying equipment

Info

Publication number: CN213865892U
Application number: CN202022815536.2U
Authority: CN
Inventors: 黄浩亮; 张学伟
Original assignee: Guangdong Shenling Environmental Systems Co Ltd
Current assignee: Guangdong Shenling Environmental Systems Co Ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-08-03
Anticipated expiration: 2030-11-30

Abstract

The utility model is suitable for a machinery technical field provides a drying system and mud drying equipment, and drying system includes: a first housing provided with a first air inlet and a first air outlet; the dehumidifying and drying module comprises a fan, a cooling unit and a heating unit, wherein the cooling unit is used for dehumidifying gas entering the drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator; and the heating and drying module comprises a condenser, the condenser is used for exchanging heat with a heating medium so as to dry the materials through the heating medium, and a refrigerant pipeline in the evaporator is communicated with a refrigerant pipeline in the condenser. This scheme is through setting up evaporimeter and condenser to make the refrigerant pipeline in the evaporimeter and the refrigerant pipeline intercommunication in the condenser, the refrigerant can be with the heat to heating medium heating in the condenser of absorbing gas in the evaporimeter, thereby makes the heat that gas took out from the drying-machine get back to the drying-machine through heating medium again, effectively avoids the energy extravagant.

Description

Drying system and sludge drying equipment

Technical Field

The utility model belongs to the technical field of machinery, especially, relate to a drying system and sludge drying equipment.

Background

The sludge is the concentration of pollutants in the process of wastewater and sewage treatment, and has the characteristics of high water content, large volume, complex shape, difficult transportation and the like. Generally, sludge is dried and then is subjected to subsequent treatment, the drying of the sludge has two methods, namely a natural evaporation method and a mechanical dehydration method, and the mechanical dehydration method has the characteristic of high sludge drying efficiency and is a commonly used sludge drying means.

The traditional vertical disc sludge dryer has the structure that a plurality of layers of metal discs are arranged inside the vertical disc sludge dryer and used for bearing sludge, a cavity capable of flowing heat medium is arranged inside each metal disc, the heat medium can be steam, heat conduction oil or hot water, a heat medium pipeline is arranged beside each metal disc, and a branch pipe leads the heat medium into the cavity of each disc. The disc is heated to dry the sludge contacting the outer surface of the disc. The inside interface that is equipped with simultaneously of unit can let in outside air, and the air carries out the drainage through outside fan, gets into the inside back of disc, absorbs the steam that comes out from the mud evaporation, and the air after absorbing moisture is outside by draught fan discharge disc, so constantly circulate, can carry into the mud of vertical disc to carry in succession and carry out drying process.

However, in the existing sludge dryer, the air brings out the water vapor evaporated from the sludge and simultaneously brings out the heat emitted by the disc, thereby causing energy waste.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a drying system and sludge drying equipment aims at solving current sludge drying machine, and the air can be together taken away the heat that the disc gived off when taking away the steam that the mud evaporation came out to cause the extravagant technical problem of the energy.

The embodiment of the utility model provides a realize like this, drying system includes first casing and sets up dehumidification drying module and heating drying module in first casing;

the first shell is provided with a first air inlet and a first air outlet, the first air outlet is used for discharging high-temperature gas, and the first air inlet is used for allowing gas acting on the materials to be dried to enter;

the dehumidifying and drying module comprises a fan, a cooling unit and a heating unit which are sequentially arranged from a first air inlet to a first air outlet, the cooling unit is used for dehumidifying gas entering the drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator;

the heating and drying module comprises a condenser, the condenser is used for exchanging heat with a heating medium so as to dry materials by transferring heat through the heating medium, a refrigerant pipeline in the evaporator is communicated with a refrigerant pipeline in the condenser, and the refrigerant releases heat absorbed in the evaporator in the condenser by flowing between the evaporator and the condenser.

Preferably, the cooling unit further includes a heat absorber, the heating unit includes a heat radiator therein, and a refrigerant line in the heat absorber communicates with a refrigerant line in the heat radiator, and the refrigerant line releases heat absorbed in the heat absorber in the heat radiator by flowing between the heat absorber and the heat radiator.

Preferably, the cooling unit further comprises a cooling coil, and the cooling coil is communicated with the cooling tower.

Preferably, the heat absorber, the cooling coil and the evaporator of the cooling unit are arranged in sequence along the gas flow direction.

Preferably, drying system still includes the controller, the controller is connected with temperature sensor, temperature sensor sets up the air inlet side of cooling coil, temperature sensor is used for measuring return air temperature, the controller is used for according to return air temperature control the medium flow in the cooling coil.

Preferably, heating coil is included in the heating unit, the heating coil is connected with the condenser, and the condenser is also used for heating the heating medium in the heating coil.

Preferably, the evaporator is further provided with a drain pipe, and the drain pipe is used for draining condensed water generated by gas passing through the evaporator.

Preferably, a compressor is further arranged between the evaporator and the condenser, and the compressor is used for driving the refrigerant to flow from the evaporator to the condenser;

and a throttling element is further arranged on a refrigerant pipeline between the evaporator and the condenser and used for adjusting the flow of the refrigerant between the evaporator and the condenser.

Another object of the embodiments of the present invention is to provide a sludge drying apparatus, which includes a sludge dryer and the above-mentioned drying system;

the sludge dryer comprises a second shell and a sludge bearing structure arranged in the second shell;

the second shell is provided with a second air inlet and a second air outlet, the second air inlet is connected with the first air outlet in the drying system, and the second air outlet is connected with the first air inlet in the drying system;

the sludge bearing structure is provided with a heating medium storage structure, the heating medium storage structure is used for heating sludge, and the heating medium storage structure is connected with a condenser in the drying system.

The embodiment of the utility model provides a pair of drying system, through setting up dehumidification drying module and heating drying module, set up the evaporimeter in dehumidification drying module, set up the condenser in heating drying module, and make the refrigerant pipeline intercommunication in refrigerant pipeline in the evaporimeter and the condenser, thereby the refrigerant can absorb the heat with gas heat transfer in the evaporimeter, then absorb thermal refrigerant flow in the condenser with heating medium heat transfer release heat, the heating medium that is heated lets in drying sludge in the back sludge drying machine again, thereby can make the heat that gas took out from the sludge drying machine get back to the sludge drying machine again through heating medium, thereby effectively avoid the energy extravagant.

Drawings

Fig. 1 is a schematic structural diagram of a drying system provided in an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a drying system provided with a cooling coil according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a connection loop of an evaporator and a condenser according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a connection loop of a heat absorber and a heat radiator according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a sludge dryer provided by an embodiment of the present invention;

in the drawings: 1. a first housing; 11. a first air inlet; 12. a first air outlet; 13. a gas processing chamber; 14. a water collection tank; 2. a fan; 31. a heat sink; 32. a cooling coil; 321. a cooling tower; 33. an evaporator; 41. a heat emitter; 42. a heating coil; 51. a condenser; 511. a refrigerant line; 512. a heating medium line; 52. a compressor; 53. a throttling element; 6. a controller; 7. a second housing; 71. a second air inlet; 72. a second air outlet; 73. a sludge feeding port; 74. a sludge discharge port; 75. a disc; 76. a water inlet pipe; 77. and (5) discharging a water pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The following detailed description is provided for the specific embodiments of the present invention.

As shown in fig. 1, which is a schematic structural diagram of a drying system provided in an embodiment of the present invention, the drying system includes a first housing 1, and a dehumidifying and drying module and a heating and drying module disposed in the first housing 1;

the first shell 1 is provided with a first air inlet 11 and a first air outlet 12, the first air outlet 12 is used for discharging high-temperature gas, and the first air inlet 11 is used for allowing gas acting on the material to be dried to enter;

the dehumidifying and drying module comprises a fan 2, a cooling unit and a heating unit which are sequentially arranged from a first air inlet 11 to a first air outlet 12, wherein the cooling unit is used for dehumidifying gas entering a drying system, the heating unit is used for heating the dehumidified gas, and the cooling unit comprises an evaporator 33;

the heating and drying module comprises a condenser 51, the condenser 51 is used for exchanging heat with a heating medium to dry materials by transferring heat through the heating medium, a refrigerant pipeline in the evaporator 33 is communicated with a refrigerant pipeline in the condenser 51, and the refrigerant releases heat absorbed in the evaporator 33 in the condenser 51 by flowing between the evaporator 33 and the condenser 51.

The embodiment of the utility model provides an in, do not do the restriction to the concrete structure of first casing 1, for example first casing 1 can be the rectangle structure, be provided with gas treatment chamber 13 in the first casing 1, gas treatment chamber 13 is airtight structure except that first air inlet 11 and first gas outlet 12, the high-temperature gas of first gas outlet 12 exhaust can let in and deposit the device that remains the stoving material, high-temperature gas can treat the material of drying and dry, because gas is mobile, high-temperature gas can take away the vapor that evaporates in the mud in the time of discharging and depositing the device that remains the stoving material in the lump, then will act on gas after waiting the stoving material (also from depositing the device that remains the stoving material exhaust gas) let in gas treatment chamber 13 through first air inlet 11. The present embodiment takes the material to be dried as sludge as an example, but is not limited thereto.

The embodiment of the utility model provides an in, dehumidification drying module sets up in gas treatment chamber 13, and fan 2, cooling unit and heating unit set gradually from first air inlet 11 to first gas outlet 12 and indicate that the gas that acts on after waiting to dry the material loops through fan 2, cooling unit and heating unit. Wherein the fan 2 provides driving force for the circulation of gas between the drying system and the device for storing the materials to be dried; the cooling unit can cool the gas to condense the water vapor in the gas, so as to achieve the purpose of dehumidifying the gas; the heating unit can heat the gas after cooling and dehumidifying, for example, when the device for storing the materials to be dried is a sludge dryer, high-temperature gas is introduced into the sludge dryer, and not only can the water evaporated in the sludge be taken away through gas circulation, but also the drying efficiency of the sludge can be improved, and the evaporation of the water in the sludge is accelerated. The cooling unit comprises an evaporator 33, and the gas is cooled by heat exchange between the gas and a refrigerant in the evaporator 33 to realize dehumidification of the gas. Preferably, the evaporator 33 may be provided with a drain pipe, and condensed water generated by cooling water vapor in the gas may be discharged through the drain pipe for subsequent treatment. The present embodiment does not limit the specific structure of the heating unit.

The embodiment of the utility model provides an in to use the device of depositing the material that remains to dry for vertical disc sludge drying-machine to exemplify, the heating drying module can heat the stoving to mud in flowing the disc of sludge drying-machine through heating medium. The heating and drying module comprises a condenser 51, the heating medium can be steam, heat conduction oil or water, the embodiment takes the heating medium as water as an example, the water can exchange heat with the refrigerant in the condenser 51 to absorb heat, and then flows into the disc to heat the sludge. The refrigerant line in the evaporator 33 is communicated with the refrigerant line in the condenser 51 so that the refrigerant can exchange heat with gas in the evaporator 33 to absorb heat and then flow to the condenser 51 to exchange heat with water to release heat. As shown in fig. 3, a compressor 52 is further disposed between the evaporator 33 and the condenser 51, the compressor 52 can be used for driving the refrigerant to flow from the evaporator 33 to the condenser 51, and preferably, a throttling element 53 can be further disposed on a refrigerant line 511 between the evaporator 33 and the condenser 51, and the throttling element 53 is used for adjusting the flow rate of the refrigerant between the evaporator 33 and the condenser 51. In addition, a heating medium line 512 passes through the condenser 51, and the heating medium in the heating medium line exchanges heat with the refrigerant in the refrigerant line in the condenser.

The embodiment of the utility model provides a pair of drying system, through setting up dehumidification drying module and heating drying module, set up evaporimeter 33 in dehumidification drying module, set up condenser 51 in heating drying module, and make the refrigerant pipeline intercommunication in refrigerant pipeline in evaporimeter 33 and the condenser 51, thereby the refrigerant can absorb the heat with gas heat transfer in evaporimeter 33, then absorb the heat refrigerant flow in condenser 51 and heating medium heat transfer release heat, the heating medium that is heated lets in drying sludge in the back sludge drying machine again, thereby can make the heat that gas took out from the sludge drying machine get back to the sludge drying machine again through heating medium, thereby effectively avoid the energy waste.

In another embodiment of the present invention, a heating coil 42 is included in the heating unit, the heating coil 42 is connected to the condenser 51, and the condenser 51 is also used for heating the heating medium in the heating coil 42.

In the embodiment of the present invention, when the heating medium is water, the heating coil 42 is a hot water coil, the heat is absorbed by the water in the hot water coil and the refrigerant in the condenser 51 through heat exchange, and then released with the gas heat exchange, which is equivalent to that the evaporator 33 is also used for heating the dehumidified gas from the absorbed part of the gas, thereby realizing thermal circulation. In this case, a part of the heating medium corresponding to the heat exchange with the condenser 33 heats the air through the hot water coil, and a part of the heating medium enters the sludge in the disc of the sludge dryer.

The embodiment of the utility model provides a pair of drying system sets up heating coil 42 through the heating unit in dehumidification drying module to make heating coil 42 be connected with condenser 51, can make the heat absorption of heating medium in heating coil 42 in the refrigerant in condenser 51 be used for gas heating, and the heat of the refrigerant in condenser 51 derives from gas, has realized partial thermal circulation, energy saving.

As shown in fig. 1 and 4, in another embodiment of the present invention, the cooling unit further includes a heat absorber 31, the heating unit includes a heat radiator 41 therein, and a refrigerant line in the heat absorber 31 communicates with a refrigerant line in the heat radiator 41, and the refrigerant line releases heat absorbed in the heat absorber 31 in the heat radiator 41 by flowing between the heat absorber 31 and the heat radiator 41.

In the embodiment of the present invention, the specific structures of the heat absorber 31 and the heat radiator 41 are not limited, the refrigerant in the heat absorber 31 absorbs the heat of the gas to cool the gas, and the refrigerant in the heat radiator 41 exchanges heat with the gas to heat the gas, so that the refrigerant pipeline in the heat absorber 31 is communicated with the refrigerant pipeline in the heat radiator 41, and the refrigerant flows between the heat absorber 31 and the heat radiator 41, thereby reusing the heat absorbed by the refrigerant in the gas to heat the gas.

In the embodiment of the present invention, preferably, as shown in fig. 2, the cooling unit may further include a cooling coil 32, the cooling coil 32 is communicated with the cooling tower 321, and the cooling unit heat absorber 31, the cooling coil 32 and the evaporator 33 may be preferably sequentially arranged along the gas flowing direction. To facilitate the collection of the condensed water and the subsequent treatment of the condensed water, a water collection sump 14 may be provided below the cooling unit.

The embodiment of the utility model provides a pair of drying system, through set up heat absorber 31, cooling coil 32 and evaporimeter 33 in cooling unit, gaseous through the multilayer cooling, can make the abundant condensation of vapor in the gas, improve the condensation effect, set up heat emitter 41 simultaneously in heating unit, make the refrigerant pipeline intercommunication of heat absorber 31 and heat emitter 41, can make the refrigerant be used for again heating gas in the absorptive heat of gas, make the heat obtain make full use of, energy saving.

In another embodiment of the utility model, the drying system still includes controller 6, controller 6 is connected with temperature sensor, temperature sensor sets up cooling coil 32's air inlet side, temperature sensor is used for measuring return air temperature, controller 6 is used for controlling according to return air temperature the medium flow in the cooling coil 32.

In the embodiment of the present invention, the model of the controller 6 and the setting mode of the temperature sensor (not shown in the figure) on the air inlet side of the cooling coil 32 are not limited, because the change of the sludge drying load, the temperature of the gas entering the drying system from the sludge dryer will also change, in order to ensure the stable operation of the evaporator 33 and the condenser 51, the temperature of the gas entering the evaporator 33 needs to be controlled, so that the temperature of the gas on the air inlet side of the cooling coil 32 can be identified, the flow of the water entering the cooling coil 32 from the cooling tower 321 can be adjusted according to the temperature of the gas passing through the cooling coil 32, a throttle valve (not shown in the figure) can be arranged on the pipeline communicating the cooling coil 32 and the cooling tower 321, the throttle valve is connected with the controller 6, the controller 6 can compare the data sent by the temperature sensor with the preset value, then determine the flow value of the corresponding water and send a control instruction, the throttle valve regulates the flow of water to the cooling coil 32 in accordance with the control command.

The embodiment of the utility model provides a pair of drying system is through setting up controller 6 in drying system to make controller 6 be connected with the temperature sensor of cooling coil 32 air inlet side, can make controller 6 according to the temperature control cooling coil's of cooling coil 32 air inlet side discharge, thereby can control the gas temperature through evaporimeter 33, guarantee evaporimeter 33 and condenser 51 go on under stable operating mode.

The utility model discloses above-mentioned embodiment provides a drying system, at the during operation, act on and treat that the gas after the drying material gets into first casing 1 through first air inlet 11, then discharge from first gas outlet 12 behind cooling unit and the heating unit in proper order, heat drying module passes through heating medium transfer heat drying material simultaneously. Wherein the evaporator 33 in the cooling unit is connected with the condenser 51 in the heating and drying module, and the refrigerant in the evaporator 33 releases heat absorbed by exchanging heat with the gas in the condenser 51 for heating the heating medium. When the cooling unit is further provided with a heat absorber 31, the heating unit is further provided with a heat radiator 41 and a heating coil 42, wherein the heat absorber 31 is connected with the heat radiator 41, the heating coil 42 is connected with a condenser 51, refrigerant in the heat absorber 31 absorbs heat in gas and then exchanges heat with the gas in the heat radiator 41 to release the heat, and meanwhile, a part of heating medium exchanging heat with the refrigerant in the condenser 51 enters the sludge dryer to dry sludge, and the other part of heating medium enters the heating coil 42 to exchange heat with the gas to heat gas.

As shown in fig. 5, in another embodiment of the present invention, there is provided a sludge drying apparatus, which includes a sludge dryer and a drying system as described above;

the sludge dryer comprises a second shell 7 and a sludge bearing structure arranged in the second shell 7;

a second air inlet 71 and a second air outlet 72 are arranged on the second shell 7, the second air inlet 71 is connected with a first air outlet 12 in the drying system, and the second air outlet 12 is connected with a first air inlet 11 in the drying system;

the sludge bearing structure is provided with a heating medium storage structure, the heating medium storage structure is used for heating sludge, and the heating medium storage structure is connected with a condenser 51 in the drying system.

In the embodiment of the present invention, the specific structure of the sludge dryer and the specific connection modes between the second air inlet 71 and the first air outlet 12 and between the second air outlet 72 and the first air inlet 11 are not limited, for example, the connection between them can be through an air pipe, and the connection between the two ends of the air pipe and the second air inlet 71 and the first air outlet 11 can be through a screw thread, but not limited thereto. Of course, the second housing 7 is further provided with a sludge inlet 73 and a sludge outlet 74, the sludge inlet 73 may be disposed at the upper end of the second housing 7, and the sludge outlet 74 may be disposed at the bottom end of the second housing 7.

In the embodiment of the present invention, the sludge bearing structure may be a multi-layer disc 75 disposed in the second housing 7, the medium storage structure disposed on the disc 75 may be a cavity disposed inside the disc 75, but is not limited thereto, the cavity inside the disc 75 is connected to the water inlet pipe 76 and the water outlet pipe 77, and the water inlet pipe 76 and the water outlet pipe 77 are connected to two ends of the condenser 51. The water flows in the condenser 51 in heat exchange relationship with the refrigerant through the inlet pipe 76 to the cavity inside the disc 75 in heat exchange relationship with the sludge on the disc 75 and then flows through the outlet pipe 77 into the condenser 51.

The embodiment of the utility model provides a pair of sludge drying equipment, through setting up foretell drying system, can dry and heat to mud simultaneously through dehumidification stoving, provide mud drying efficiency, and drying system can utilize the heating medium heating from gas absorption's heat in to heating drying module to get into mud drying-machine and heat mud, make the heat obtain make full use of, the energy saving.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The drying system is characterized by comprising a first shell, a dehumidifying drying module and a heating drying module, wherein the dehumidifying drying module and the heating drying module are arranged in the first shell;

the heating and drying module comprises a condenser, the condenser is used for exchanging heat with a heating medium to dry materials through heat transfer of the heating medium, a refrigerant pipeline in the evaporator is communicated with a refrigerant pipeline in the condenser, and the refrigerant releases heat absorbed in the evaporator in the condenser through flowing between the evaporator and the condenser.

2. A drying system according to claim 1, wherein said cooling unit further includes a heat absorber therein, said heating unit includes a heat radiator therein, and a refrigerant line in said heat absorber communicates with a refrigerant line in said heat radiator, and the refrigerant line releases heat absorbed in said heat absorber in said heat radiator by flowing between said heat absorber and said heat radiator.

3. The drying system of claim 2, wherein the cooling unit further comprises a cooling coil, the cooling coil being in communication with a cooling tower.

4. A drying system according to claim 3, wherein the heat absorber, the cooling coil and the evaporator are arranged in sequence along the air flow direction.

5. The drying system of claim 3, further comprising a controller, wherein the controller is connected to a temperature sensor, the temperature sensor is disposed on an air inlet side of the cooling coil, the temperature sensor is configured to measure a return air temperature, and the controller is configured to control the flow of the medium in the cooling coil according to the return air temperature.

6. A drying system according to claim 1, wherein the heating unit comprises a heating coil, the heating coil is connected to the condenser, and the condenser is further used for heating the heating medium in the heating coil.

7. The drying system of claim 1, wherein the evaporator further comprises a drain for draining condensed water generated by the gas passing through the evaporator.

8. A drying system according to claim 1, wherein a compressor is further provided between the evaporator and the condenser, the compressor being adapted to drive refrigerant from the evaporator to the condenser;

9. A sludge drying apparatus, characterized in that the sludge drying apparatus comprises a sludge dryer and a drying system according to any one of claims 1 to 8;