CN213984292U - Heat pump drying equipment for waste residue dehydration - Google Patents
Heat pump drying equipment for waste residue dehydration Download PDFInfo
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- CN213984292U CN213984292U CN202022813535.4U CN202022813535U CN213984292U CN 213984292 U CN213984292 U CN 213984292U CN 202022813535 U CN202022813535 U CN 202022813535U CN 213984292 U CN213984292 U CN 213984292U
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- 238000001035 drying Methods 0.000 title claims abstract description 137
- 239000002699 waste material Substances 0.000 title claims abstract description 27
- 230000018044 dehydration Effects 0.000 title claims abstract description 10
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 10
- 238000007791 dehumidification Methods 0.000 claims abstract description 35
- 239000000463 material Substances 0.000 claims abstract description 29
- 239000003507 refrigerant Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 77
- 239000011148 porous material Substances 0.000 claims description 30
- 239000007788 liquid Substances 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 15
- 239000010949 copper Substances 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 239000002274 desiccant Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000011229 interlayer Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims description 6
- 235000012255 calcium oxide Nutrition 0.000 claims description 3
- 239000000292 calcium oxide Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 10
- 238000001816 cooling Methods 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 5
- 239000002440 industrial waste Substances 0.000 description 5
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 206010039509 Scab Diseases 0.000 description 1
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- 230000001133 acceleration Effects 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
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- 239000003814 drug Substances 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000007602 hot air drying Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The utility model belongs to the field of industrial drying equipment, and relates to a heat pump drying device for waste residue dehydration; the main characteristics are as follows: a secondary drying device: the first drying box is dried by utilizing circulating hot air and transmits materials through a connecting pipeline and a baffle plate, and the materials are heated and radiated by utilizing a resistance wire in the second drying box; secondary dehumidification device: cooling and dehumidifying through a low-temperature heat exchange coil for indirect heat exchange and passing through a dehumidifying orifice plate; and (3) indirect heat exchange design: the high-temperature heat exchange coil exchanges heat with a high-temperature refrigerant in the heat exchange coil of the condenser to obtain heating capacity, then forced convection heat exchange is carried out on circulating air in the other end and the air pipe after the high-temperature heat exchange coil is pressurized by the first circulating pump, heat exchange is carried out between the hot air generating process and the low-temperature refrigerant in the low-temperature heat exchange coil and the heat exchange coil of the evaporator to obtain refrigerating capacity, forced convection heat exchange is carried out on hot air in the other end and the air pipe after the high-temperature heat exchange coil is pressurized by the second circulating pump, and hot air is cooled and dehumidified.
Description
Technical Field
The utility model relates to an industry drying equipment field especially relates to a heat pump drying equipment for waste residue dehydration.
Background
In recent years, with the acceleration of industrialization and the improvement of national consumption level, the manufacturing industry develops rapidly, and a large amount of industrial waste residues such as medicine residues, wine residues, fruit residues and the like are generated. The waste residues contain a large amount of water, and are easy to generate malodorous gases after long-term stacking and can cause environmental pollution, so the waste residues can be reused only after being dehydrated and dried. The current common drying methods mainly comprise flat natural drying, traditional steam drying, industrial waste heat drying, heat pump drying and the like. The method has the advantages that a large amount of fields are needed for natural drying by tiling, a steam source is needed for steam drying, the energy utilization rate is low, a proper heat source needs to be found by utilizing industrial waste heat, the heat pump drying technology is a drying technology rapidly developed in recent years, the method has the advantages of environmental friendliness, high efficiency, energy conservation, strong applicability, low treatment cost and the like, can adapt to the requirements of different drying processes, and has a good development prospect in the drying industry.
However, the heat pump drying apparatus for industrial waste residue at present has the following problems: at present, the commonly adopted drying mode is circulating hot air drying, hot air directly contacts with a condenser and an evaporator to carry out convection heat exchange, but most of gas emitted by industrial waste residues has acidity and corrosivity, and after the gas is brought into equipment by the hot air, the metal on the surface of the equipment can be corroded after the gas is operated for a long time, so that the service life is shortened; the moisture inside the surface of the material is mainly removed in the later stage of the drying process, and along with the drying process, the moisture on the surface of the material is dried firstly, the surface of the material is scabbed and wrinkled, the moisture inside the material is difficult to evaporate, and a large amount of time and a large amount of heat energy are consumed for removing the moisture inside the material; because the contact area of the refrigerant pipeline of the evaporator and the low-temperature heat exchange coil is small, the contact time is insufficient, the heat exchange is insufficient, the hot air can still carry wet steam after the heat exchange, and the drying efficiency of the circulating hot air is reduced.
SUMMERY OF THE UTILITY MODEL
Utility model purpose: the utility model provides a heat pump drying equipment for waste residue dehydration, the problem that its aim at improvement current heat pump drying equipment removed moist poor, the drying is not thorough, life is short.
The technical scheme is as follows:
a heat pump drying equipment for waste residue dehydration which characterized in that: the equipment consists of a heat pump circulating system, a hot air circulating system, a drying box, a condensed water system and a secondary dehumidifying system; the hot air circulating system is of an annular structure, the heat pump circulating system is arranged on the inner side of the hot air circulating system, and the hot air circulating system is sequentially connected with the heat pump circulating system, the drying box, the heat pump circulating system, the condensed water system and the secondary dehumidification system along the conveying wind direction;
the heat pump cycle system includes: the system comprises a compressor, a condenser, a throttle valve, an evaporator, a soft joint, a heat exchange coil, a first circulating pump, a high-temperature heat exchange coil, a second circulating pump, a low-temperature heat exchange coil and a refrigerant pipeline; the compressor, the heat exchange coil inside the condenser, the throttle valve and the heat exchange coil inside the evaporator are welded in sequence through refrigerant pipelines to form a heat pump circulation channel; the high-temperature heat exchange coil and the low-temperature heat exchange coil are of annular structures, one end of the high-temperature heat exchange coil is arranged in the condenser, the other end of the high-temperature heat exchange coil is arranged in the hot air circulating system, the first circulating pump is connected with the high-temperature heat exchange coil through a soft joint, one end of the low-temperature heat exchange coil is arranged in the evaporator, the other end of the low-temperature heat exchange coil is arranged in the hot air circulating system, and the second circulating pump is connected with the low;
the drying cabinet includes: the device comprises a first drying box, a baffle, a connecting pipeline, a second drying box, a resistance wire, a first drying box feeding hole, a first drying box discharging hole, a material frame, a movable scraper and a second drying box discharging hole; the first drying box is provided with a first drying box feeding hole and a first drying box discharging hole, and a material frame, a movable scraper and a baffle connected with a connecting pipeline are arranged inside the first drying box; the second drying box is connected with the first drying box through a connecting pipeline, a discharge hole of the second drying box is formed in the second drying box, a resistance wire is arranged in the interlayer, and a material rack is arranged in the interlayer;
the condensate system includes: the device comprises a condensed water disc, a condensed water pipe, a condensed water collecting tank, a liquid level detector, an electric valve and a drain pipe; the condensation water tray is arranged below the low-temperature heat exchange coil in the hot air circulating system and is connected with the condensation water collecting tank through a condensation water pipe; a liquid level detector is arranged in the condensed water collecting tank, and an electric valve and a drain pipe are arranged at the bottom end of the side wall of the condensed water collecting tank;
inside hot air circulating system, secondary dehumidification system installs, includes: drying agent, dehumidifying pore plate and round air hole; the dehumidification pore plate is formed by two rectangular steel plates which are arranged in parallel, a circular air hole is formed in each dehumidification pore plate, and drying agents are filled in the dehumidification pore plates;
the hot air circulating system comprises: the device comprises a fluid director, a second fan, an air pipe, a first fan and a humidity detector; the air pipe is of an annular structure, the high-temperature heat exchange coil is connected with the air pipe, the air pipe is connected with the first drying box, the other end of the first drying box is connected with the air pipe, the air pipe is connected with the low-temperature heat exchange coil, the air pipe is connected with the dehumidifying pore plate, and the air pipe is connected with the high-temperature heat exchange coil after passing through the dehumidifying pore plate to form a hot air circulation channel; the first fan is connected with the air pipe through a flange piece and arranged at an upper air inlet of the high-temperature heat exchange coil; the humidity detector is an integrated automatic control device and is arranged in an air pipe at the outlet of the first drying box; the second fan is connected with the air pipe through a flange piece and arranged at an upper air inlet of the low-temperature heat exchange coil; the dehumidifying pore plate is connected with the air pipe through a flange, and the fluid director is arranged at the corner of the air pipe.
The soft joint in the heat pump circulating system is a copper connecting piece; the first circulating pump and the second circulating pump are closed circulating pumps; the refrigerant pipeline is a copper pipe additionally provided with an insulating layer; the high-temperature heat exchange coil is a copper pipe with a circular section and is a pipeline for high-temperature circulating water; the low-temperature heat exchange coil is a copper pipe with a circular section and is a pipeline for low-temperature circulating water; the heat exchange coil is a copper pipe with a circular section and is a flowing pipeline of refrigerant in the evaporator and the condenser.
The first drying box and the second drying box in the drying boxes are steel box bodies with rectangular bodies; the connecting pipeline is a steel rectangular slope pipeline with the same width as the first drying box and the second drying box, and the outer wall of the connecting pipeline is additionally provided with a heat insulation layer.
The section of a baffle in the drying box is rectangular and is controlled by the humidity detector in an interlocking way; the material rack is a material tray which can be overturned and is controlled by the humidity detector in an interlocking way; the movable scraper is a hard plastic plate positioned on the bottom surface of the first drying box, and a raised tip is arranged above one end of the movable scraper.
The condensate water tray in the condensate water system is a tray with a rectangular bottom surface and 3% gradient, is arranged below the low-temperature heat exchange coil in the air pipe, and is provided with a condensate water hole on the bottom surface, and is connected with the condensate water collecting tank through a condensate water pipe; the condensed water pipe is a plastic water pipe with a circular section; the condensed water collecting tank is a cylindrical tank body; the liquid level detector is an integrated automatic control device and is interlocked and controlled with the electric valve.
The dehumidification pore plate in the secondary dehumidification system is connected with the air pipe through a flange, and the section of the dehumidification pore plate is rectangular; the drying agent is quicklime.
The first fan and the second fan in the hot air circulating system are axial flow fans and are connected with the air pipe through flange pieces; the fluid director is an arc-shaped guide vane; the air pipe is a steel air pipe with the outer wall additionally provided with a heat insulating material and the inner wall coated with an anticorrosive material, and is a passage for circulating hot air.
The utility model has the advantages that:
1. by adopting a closed system, the heat loss is small in the working process, the energy consumption in the drying process can be effectively reduced, the influence of the external environment temperature and the humidity is small, and the regional adaptability is strong.
2. The waste residue is primarily dried in the first drying box by utilizing the heat energy generated by the condenser in the refrigeration cycle, the moisture on the surface of the waste residue is removed, and then the internal moisture which is difficult to remove due to surface scab and dry wrinkle is removed in a short time by utilizing the heat radiation generated by electrifying the resistance wire in the second drying box, so that the operation time of the whole equipment is saved, and the working efficiency is improved.
3. The indirect heat exchange mode is adopted, the metal surfaces of the condenser and the evaporator are prevented from directly contacting with acidic and corrosive gases, and the service life is prolonged.
4. The dehumidification pore plate is arranged for secondary dehumidification, so that the problem of incomplete dehumidification caused by insufficient contact time due to insufficient contact area between the heat exchange coil of the evaporator and the low-temperature heat exchange coil of the evaporator can be solved, and the drying efficiency is improved.
Drawings
Fig. 1 is a schematic view of the device of the present utility patent;
FIG. 2 is a schematic view of hot air circulation;
FIG. 3 is a schematic view of a heat pump cycle;
FIG. 4 is a schematic view of a condensate pan installation;
FIG. 5 is a schematic view of a dehumidification orifice plate;
fig. 6 is a schematic view of the drying box installed in a vertical plane.
Description of reference numerals: 1. a compressor; 2. a condenser; 3. a throttle valve; 4. an evaporator; 5. a soft joint; 6. a heat exchange coil; 7. a first circulation pump; 8. a high temperature heat exchange coil; 9. a fluid director; 10. a first drying oven; 11. a baffle plate; 12. connecting a pipeline; 13. a second drying oven; 14. a resistance wire; 15. a second fan; 16. a second circulation pump; 17. a low temperature heat exchange coil; 18. a desiccant; 19 a desiccant orifice plate; 20. an air duct; 21. a first fan; 22. a condensate tray; 23. a condensate pipe; 24. a condensed water collection tank; 25. a refrigerant conduit; 26. a circular air hole; 27. a first drying box feed inlet; 28. a discharge port of the first drying box; 29. a material rack; 30. a movable scraper; 31. a discharge hole of the second drying box; 32. a liquid level detector; 33. an electrically operated valve; 34. a drain pipe; 35. a humidity detector.
The specific implementation mode is as follows:
the present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
As shown in fig. 1 to 6, a heat pump drying apparatus for waste residue dehydration is characterized in that: the equipment consists of a heat pump circulating system, a hot air circulating system, a drying box, a condensed water system and a secondary dehumidifying system; the hot air circulating system is of an annular structure, the heat pump circulating system is arranged on the inner side of the hot air circulating system, and the hot air circulating system is sequentially connected with the heat pump circulating system, the drying box, the heat pump circulating system, the condensed water system and the secondary dehumidification system along the conveying wind direction;
the heat exchange coil 6 in the heat pump circulating system is respectively arranged in the condenser 2 and the evaporator 4, and the compressor 1, the heat exchange coil 6 in the condenser 2, the throttle valve 3 and the heat exchange coil 6 in the evaporator 4 are sequentially welded through a refrigerant pipeline 25 to form a heat pump circulating channel; the high-temperature heat exchange coil 8 and the low-temperature heat exchange coil 17 are of annular structures, one end of the high-temperature heat exchange coil 8 is arranged in the condenser 2, the other end of the high-temperature heat exchange coil is arranged in the hot air circulating system, the first circulating pump 7 is connected with the high-temperature heat exchange coil 8 through the soft joint 5, one end of the low-temperature heat exchange coil 17 is arranged in the evaporator 4, the other end of the low-temperature heat exchange coil 17 is arranged in the hot air circulating system, and the second circulating pump 16 is connected with the low-temperature heat exchange coil 17 through the soft joint 5;
the first drying box 10 in the drying box is provided with a first drying box feeding hole 27 and a first drying box discharging hole 28, and a material frame 29, a movable scraper 30 and a baffle plate 11 connected with a connecting pipeline 12 are arranged in the first drying box; the second drying box 13 is connected with the first drying box 10 through a connecting pipeline 12, a second drying box discharge port 31 is formed in the second drying box 13, a resistance wire 14 is arranged in an interlayer, and a material rack 29 is arranged in the interlayer;
a condensate water tray 22 in the condensate water system is arranged below a low-temperature heat exchange coil 17 in the hot air circulating system, and the condensate water tray 22 is connected with a condensate water collecting tank 24 through a condensate water pipe 23; a liquid level detector 32 is arranged in the condensed water collecting tank 24, and an electric valve 33 and a drain pipe 34 are arranged at the bottom end of the side wall of the condensed water collecting tank 24;
the secondary dehumidification system is arranged in the hot air circulation system, the dehumidification pore plate 19 is two rectangular steel plates which are arranged in parallel, a circular air hole 26 is formed in the dehumidification pore plate 19, and the desiccant 18 is filled in the dehumidification pore plate 19;
an air pipe 20 in the hot air circulation system is of an annular structure, the high-temperature heat exchange coil 8 is connected with the air pipe 20, the air pipe 20 is connected with the first drying box 10, the other end of the first drying box 10 is connected with the air pipe 20, the air pipe 20 is connected with the low-temperature heat exchange coil 17, the air pipe 20 is connected with the dehumidifying pore plate 19, and the air pipe 20 is connected with the high-temperature heat exchange coil 8 after passing through the dehumidifying pore plate 19 to form a hot air circulation channel; the first fan 21 is connected with the air pipe 20 through a flange piece and is arranged at an upper air inlet of the high-temperature heat exchange coil 8; the humidity detector 35 is an integrated automatic control device and is arranged in the air pipe 20 at the outlet of the first drying box 10; the second fan 15 is connected with the air pipe 20 through a flange piece and is arranged at an upper air inlet of the low-temperature heat exchange coil 17; the dehumidifying pore plate 19 is connected with an air pipe 20 through a flange, and the fluid director 9 is arranged at the corner of the air pipe 20.
The soft joint 5 is a copper connecting piece; the first circulating pump 7 and the second circulating pump 16 are closed circulating pumps; the refrigerant pipeline 25 is a copper pipe additionally provided with an insulating layer; the high-temperature heat exchange coil 8 is a copper pipe with a circular section and is a pipeline for high-temperature circulating water; the low-temperature heat exchange coil 17 is a copper pipe with a circular section and is a pipeline for low-temperature circulating water; the heat exchange coil 6 is a copper pipe with a circular cross section, and is a flow pipeline of the refrigerant in the evaporator 4 and the condenser 2.
The first drying box 10 and the second drying box 13 are steel box bodies with rectangular parallelepiped shapes; the connecting pipeline 12 is a steel rectangular slope pipeline with the same width as the first drying box 10 and the second drying box 13, and the outer wall of the connecting pipeline is additionally provided with a heat insulation layer.
The section of the baffle 11 is rectangular and is interlocked with the humidity detector 35 for control; the material rack 29 is a material tray which can be turned over and is controlled by the humidity detector 35 in an interlocking way; the movable scraper 30 is a hard plastic plate located on the bottom surface of the first drying box 10, and a tip of a protrusion is provided above one end of the movable scraper 30.
The condensed water tray 22 is a tray with a rectangular bottom surface and 3% gradient, is arranged below the low-temperature heat exchange coil 17 in the air pipe 20, and is provided with a condensed water hole on the bottom surface, and is connected with a condensed water collecting tank 24 through a condensed water pipe 23; the condensate pipe 23 is a plastic water pipe having a circular cross-section; the condensed water collection tank 24 is a cylindrical tank body; the liquid level detector 32 is an integrated automatic control device and is interlocked and controlled with an electric valve 33.
The dehumidification pore plate 19 is connected with the air pipe 20 through a flange, and the section of the dehumidification pore plate is rectangular; the drying agent 18 is quicklime.
The first fan 21 and the second fan 15 are axial fans and are connected with the air pipe 20 through flange pieces; the fluid director 9 is an arc-shaped guide vane; the air duct 20 is a steel air duct with an outer wall provided with a heat insulating material and an inner wall coated with an anticorrosive material, and is a passage for circulating hot air
The heat generated in the condenser 2 in fig. 1 exchanges heat with the high-temperature heat exchange coil 8 through the heat exchange coil 6, and the high-temperature heat exchange coil 8 is pressurized by the first circulating pump 7 and then performs forced convection heat exchange with the air in the air pipe 20 after being pressurized by the first fan 21 to generate hot air. Hot air flows in the air pipe 20, then enters the first drying box 10 through the fluid director 9 at the corner, the wet waste residues are dried in the first drying box 10, the hot air is changed into wet hot air after coming out from the first drying box 10, the wet hot air is pressurized through the second fan 15, and the wet waste residues are subjected to forced convection heat exchange with the low-temperature heat exchange coil 17 pressurized through the second circulating pump 16 and are cooled and dehumidified for the first time, wherein the refrigerating capacity of the low-temperature heat exchange coil 17 is obtained from the refrigerating capacity generated by vaporization of a liquid refrigerant in the evaporator 4 and the forced convection heat exchange of the low-temperature heat exchange coil 17. And then the secondary dehumidification is carried out through a dehumidification pore plate 19, and finally the pressure is increased through a first fan 21 to exchange heat with the high-temperature heat exchange coil 8, so that the hot air circulation is formed.
Gaseous refrigerant at the outlet of the evaporator 4 enters the compressor 1, is compressed into high-temperature high-pressure gaseous refrigerant, then enters the condenser 2 through the refrigerant pipeline 25 to exchange heat with the high-temperature heat exchange coil 8, the high-temperature high-pressure gaseous refrigerant is condensed to release heat and then becomes low-temperature high-pressure liquid refrigerant, the high-temperature high-pressure gaseous refrigerant is adiabatically throttled by the throttle valve 3 to become low-temperature low-pressure liquid refrigerant, then flows into the evaporator 4 through the refrigerant pipeline 25 to exchange heat with the low-temperature heat exchange coil 17, and then becomes normal-temperature low-pressure gaseous refrigerant after evaporation and heat absorption, and finally flows back to the.
The waste residue dehydration and drying process is that firstly the waste residue enters a material frame 29 of a first drying box 10 through a first drying box feed inlet 27 to carry out heat and mass exchange with circulating hot air, a humidity detector 35 is arranged in an air pipe 20 at an outlet of the first drying box 10 and is interlocked with a baffle plate 11, the humidity detector 35 is mainly used for monitoring the moisture content of the hot air, when the humidity of the hot air is not changed any more in the drying process, the surface of the waste residue is dry, wrinkled and scabbed, and the internal moisture can not be removed through the circulating hot air. At this moment, humidity detector 35 can send opening signal to baffle 11, sends digital signal to material frame 29 simultaneously, then material frame 29 upset is emptyd the waste residue in the bottom of first drying cabinet 10, through movable scraper blade 30 with the waste residue propelling movement to baffle 11 department, then gets into second drying cabinet 13 through connecting tube 12 and carries out the secondary drying. The moisture in the waste residue epidermis can be removed in a short time through the high-temperature heat radiation generated by the electrification of the resistance wire 14 in the second drying box 13, and finally the moisture is discharged from the outlet 31 of the second drying box. Or after the drying in the first drying oven 10 is completed, the second drying can be performed by using other heat sources after the second drying oven is discharged from the discharge port 28 of the first drying oven. Humidity detector 35, material frame 29, level detector 32 and the relevant automatic control device such as electric valve 33 are current mature technique, the utility model discloses no longer do not describe any more.
The two dehumidification processes of the hot air are respectively as follows: firstly, the low-temperature heat exchange coil 17 exchanges heat with a low-temperature refrigerant in the evaporator 4 to obtain refrigerating capacity, then the refrigerating capacity is boosted by the second circulating pump 16, forced convection heat exchange is carried out on hot air obtained after dehydration and drying treatment is carried out on waste residues in the air pipe 20 at the other end, primary cooling and dehumidification are carried out on the hot air, and the temperature of circulating water in the low-temperature heat exchange coil 17 is low, so that moist hot air with high temperature can be cooled, moisture can be separated from the moist hot air in the cooling process, water drops are formed and then attached to the outer wall of the low-temperature heat exchange coil 17 (namely condensation), and the water drops drop on the condensed water disc 22, namely primary dehumidification; after the hot air is dehumidified for the first time, because the contact area between the refrigerant pipeline 25 and the low-temperature heat exchange coil 17 is small, the contact time is insufficient, the heat exchange is insufficient, and the hot air still carries moisture after the heat exchange, so the hot air needs to enter the circular air holes 26 of the dehumidification pore plate 19 through the air pipe 20, and the desiccant 18 in the dehumidification pore plate 19 is used for dehumidification again, which is the second dehumidification.
The indirect heat exchange process comprises two parts, wherein the first part is a process that the high-temperature heat exchange coil 8 exchanges heat with a high-temperature refrigerant through the heat exchange coil 6 of the condenser 2 to obtain heating quantity, and then forced convection heat exchange is carried out on circulating air in the air pipe 20 at the other end after the heat is boosted by the first circulating pump 7 to generate hot air. The second part is a process that the low-temperature heat exchange coil 17 exchanges heat with a low-temperature refrigerant through the heat exchange coil 6 of the evaporator 4 to obtain refrigerating capacity, and then the refrigerating capacity is boosted by the second circulating pump 16, and then forced convection heat exchange is carried out between the other end of the refrigerating capacity and hot air in the air pipe 20 to cool and dehumidify the hot air.
The condensate water collecting device comprises a condensate water tray 22, a condensate water pipe 23, a condensate water collecting tank 24, a liquid level detector 32, an electric valve 33 and a drain pipe 34, the condensate water generated by cooling and dehumidifying hot air by the low-temperature heat exchange coil 17 drops on the condensate water tray 22, the condensate water flows into the condensate water collecting tank 24 through the condensate water pipe 23, and the corrosive condensate water drops on the inner corrosion pipe wall of the air pipe 20 can be avoided. The liquid level detector 32 is controlled in an interlocking manner with the electric valve 33, when the amount of the condensed water reaches the set liquid level of the liquid level detector 32, the liquid level detector 32 gives an alarm, and releases an opening signal to the electric valve 33 to release the condensed water in the condensed water collection tank 24 through the drain pipe 34.
The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.
Claims (7)
1. A heat pump drying equipment for waste residue dehydration which characterized in that: the equipment consists of a heat pump circulating system, a hot air circulating system, a drying box, a condensed water system and a secondary dehumidifying system; the hot air circulating system is of an annular structure, the heat pump circulating system is arranged on the inner side of the hot air circulating system, and the hot air circulating system is sequentially connected with the heat pump circulating system, the drying box, the heat pump circulating system, the condensed water system and the secondary dehumidification system along the conveying wind direction;
the heat pump cycle system includes: the system comprises a compressor (1), a condenser (2), a throttle valve (3), an evaporator (4), a soft joint (5), a heat exchange coil (6), a first circulating pump (7), a high-temperature heat exchange coil (8), a second circulating pump (16), a low-temperature heat exchange coil (17) and a refrigerant pipeline (25); the heat exchange coil (6) is respectively arranged in the condenser (2) and the evaporator (4), and the compressor (1), the heat exchange coil (6) in the condenser (2), the throttle valve (3) and the heat exchange coil (6) in the evaporator (4) are sequentially welded through a refrigerant pipeline (25) to form a heat pump circulating channel; the high-temperature heat exchange coil (8) and the low-temperature heat exchange coil (17) are of annular structures, one end of the high-temperature heat exchange coil (8) is arranged in the condenser (2), the other end of the high-temperature heat exchange coil is arranged in the hot air circulating system, the first circulating pump (7) is connected with the high-temperature heat exchange coil (8) through the soft joint (5), one end of the low-temperature heat exchange coil (17) is arranged in the evaporator (4), the other end of the low-temperature heat exchange coil is arranged in the hot air circulating system, and the second circulating pump (16) is connected with the low-temperature heat exchange coil (17) through;
the drying cabinet includes: the device comprises a first drying box (10), a baffle (11), a connecting pipeline (12), a second drying box (13), a resistance wire (14), a first drying box feeding hole (27), a first drying box discharging hole (28), a material rack (29), a movable scraper (30) and a second drying box discharging hole (31); the first drying box (10) is provided with a first drying box feeding hole (27) and a first drying box discharging hole (28), and a material rack (29), a movable scraper (30) and a baffle (11) connected with the connecting pipeline (12) are arranged inside the first drying box; the second drying box (13) is connected with the first drying box (10) through a connecting pipeline (12), a second drying box discharge hole (31) is formed in the second drying box (13), a resistance wire (14) is arranged in the interlayer, and a material rack (29) is arranged in the interlayer;
the condensate system includes: the device comprises a condensed water disc (22), a condensed water pipe (23), a condensed water collecting tank (24), a liquid level detector (32), an electric valve (33) and a drain pipe (34); the condensed water tray (22) is arranged below the low-temperature heat exchange coil (17) in the hot air circulating system, and the condensed water tray (22) is connected with the condensed water collecting tank (24) through a condensed water pipe (23); a liquid level detector (32) is arranged in the condensed water collecting tank (24), and an electric valve (33) and a drain pipe (34) are arranged at the bottom end of the side wall of the condensed water collecting tank (24);
inside hot air circulating system, secondary dehumidification system installs, includes: a drying agent (18), a dehumidification pore plate (19) and a circular air hole (26); the dehumidifying pore plate (19) is two rectangular steel plates which are arranged in parallel, a round air hole (26) is formed in the dehumidifying pore plate, and the drying agent (18) is filled in the dehumidifying pore plate (19);
the hot air circulating system comprises: the air conditioner comprises a fluid director (9), a second fan (15), an air pipe (20), a first fan (21) and a humidity detector (35); the air pipe (20) is of an annular structure, the high-temperature heat exchange coil (8) is connected with the air pipe (20), the air pipe (20) is connected with the first drying box (10), the other end of the first drying box (10) is connected with the air pipe (20), the air pipe (20) is connected with the low-temperature heat exchange coil (17), the air pipe (20) is connected with the dehumidifying pore plate (19), and the air pipe (20) is connected with the high-temperature heat exchange coil (8) after passing through the dehumidifying pore plate (19) to form a hot air circulating channel; the first fan (21) is connected with the air pipe (20) through a flange piece and is arranged at an upper air inlet of the high-temperature heat exchange coil (8); the humidity detector (35) is an integrated automatic control device and is arranged in the air pipe (20) at the outlet of the first drying box (10); the second fan (15) is connected with the air pipe (20) through a flange piece and arranged at an upper air inlet of the low-temperature heat exchange coil (17); the dehumidifying pore plate (19) is connected with the air pipe (20) through a flange, and the fluid director (9) is arranged at the corner of the air pipe (20).
2. The heat pump drying apparatus for waste residue dewatering of claim 1, wherein: the soft joint (5) in the heat pump circulating system is a copper connecting piece; the first circulating pump (7) and the second circulating pump (16) are closed circulating pumps; the refrigerant pipeline (25) is a copper pipe additionally provided with a heat-insulating layer; the high-temperature heat exchange coil (8) is a copper pipe with a circular section and is a pipeline for high-temperature circulating water; the low-temperature heat exchange coil (17) is a copper pipe with a circular section and is a pipeline for low-temperature circulating water; the heat exchange coil (6) is a copper pipe with a circular section and is a flowing pipeline of refrigerant in the evaporator (4) and the condenser (2).
3. The heat pump drying apparatus for waste residue dewatering of claim 1, wherein: a first drying box (10) and a second drying box (13) in the drying boxes are steel box bodies with rectangular parallelepiped shapes; the connecting pipeline (12) is a steel rectangular slope pipeline with the same width as the first drying box (10) and the second drying box (13), and the outer wall of the connecting pipeline is additionally provided with a heat insulation layer.
4. The heat pump drying apparatus for waste residue dewatering of claim 1, wherein: the section of a baffle (11) in the drying box is rectangular and is interlocked with a humidity detector (35) for control; the material rack (29) is a material tray which can be overturned and is interlocked with the humidity detector (35) for control; the movable scraper (30) is a hard plastic plate positioned on the bottom surface of the first drying box (10), and a convex tip is arranged above one end of the movable scraper (30).
5. The heat pump drying apparatus for waste residue dewatering of claim 1, wherein: the condensed water tray (22) in the condensed water system is a tray with a rectangular bottom surface and 3% gradient and is arranged below the low-temperature heat exchange coil (17) in the air pipe (20), and a condensed water hole in the bottom surface is connected with a condensed water collecting tank (24) through a condensed water pipe (23); the condensed water pipe (23) is a plastic water pipe with a circular section; the condensed water collection tank (24) is a cylindrical tank body; the liquid level detector (32) is an integrated automatic control device and is interlocked and controlled with the electric valve (33).
6. The heat pump drying apparatus for waste residue dewatering of claim 1, wherein: a dehumidification pore plate (19) in the secondary dehumidification system is connected with an air pipe (20) through a flange, and the section of the dehumidification pore plate is rectangular; the drying agent (18) is quicklime.
7. The heat pump drying apparatus for waste residue dewatering of claim 1, wherein: the first fan (21) and the second fan (15) in the hot air circulating system are axial flow fans and are connected with the air pipe (20) through flange pieces; the fluid director (9) is an arc-shaped guide vane; the air pipe (20) is a steel air pipe with the outer wall additionally provided with a heat insulating material and the inner wall coated with an anticorrosive material, and is a passage for circulating hot air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022813535.4U CN213984292U (en) | 2020-11-30 | 2020-11-30 | Heat pump drying equipment for waste residue dehydration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022813535.4U CN213984292U (en) | 2020-11-30 | 2020-11-30 | Heat pump drying equipment for waste residue dehydration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213984292U true CN213984292U (en) | 2021-08-17 |
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ID=77268670
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022813535.4U Expired - Fee Related CN213984292U (en) | 2020-11-30 | 2020-11-30 | Heat pump drying equipment for waste residue dehydration |
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| Country | Link |
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| CN (1) | CN213984292U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113878752A (en) * | 2021-10-28 | 2022-01-04 | 安徽凤阳淮河玻璃有限公司 | Raw material drying device is used in glassware production |
-
2020
- 2020-11-30 CN CN202022813535.4U patent/CN213984292U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113878752A (en) * | 2021-10-28 | 2022-01-04 | 安徽凤阳淮河玻璃有限公司 | Raw material drying device is used in glassware production |
| CN113878752B (en) * | 2021-10-28 | 2023-08-04 | 安徽凤阳淮河玻璃有限公司 | Raw material drying device for glass product production |
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| GR01 | Patent grant | ||
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Granted publication date: 20210817 |