Efficient and energy-saving staged industrial dryer

Abstract

The invention discloses an efficient and energy-saving staged industrial dryer which comprises a dryer body, a heat pump circulation system and a condensation recovery device. The dryer main body comprises a box body, a mounting bracket and a conveying device; a drying cavity A and a drying cavity B are formed in the box body; the heat pump circulating system comprises a double-layer evaporator, a circulating fan and a circulating pipeline; the double-layer evaporator comprises a first heat exchange area and a second heat exchange area; and the condensation recovery device is used for cooling the flowing high-temperature air and liquefying and recovering the cleaning agent in the high-temperature air. The workpiece is dried in the two areas by arranging a specific structure, two stages of different drying temperatures can be adopted according to the current humidity of the workpiece, targeted drying is achieved, and the energy utilization efficiency is high; in addition, the condensation recovery device not only can cool the flowing high-temperature air, but also can liquefy and recover the cleaning agent in the high-temperature air, and has good environmental protection benefits.

Description

Technical Field

[0001] The invention relates to an industrial drying device, in particular to a high-efficiency and energy-saving staged industrial drying machine. Background Art

[0002] Industrial dryers are mainly used to dry cleaned workpieces after the industrial cleaning process to remove cleaning agents on the surface and improve production efficiency and product quality.

[0003] However, traditional equipment has certain limitations in the drying process. For example, Chinese patent number: CN 221951864 U discloses an automatic pass-through cleaning machine, which mainly includes a frame, a conveyor belt and a spray assembly, and also includes a drying box, which is fixedly connected to the top of the frame and has a rotatable fan blade inside; a heating plate, which is fixedly installed on both sides of the inner wall of the drying box; a baffle, which is movably installed in the feeding end of the frame; a driving member, which is fixed to the frame and is in transmission connection with the baffle; a water tank, which is fixedly installed in the frame and has a high-pressure water pump fixedly installed inside; a nozzle, which is fixedly installed in the top of the frame; a water inlet pipe, whose two ends are fixedly connected to the high-pressure water pump and the nozzle; a support plate, whose two ends are fixedly connected to the inner wall of the frame and is arranged between the conveyor belts; a tilting plate, which is arranged above the fixed plate and has a top end rotatably connected to the support plate; and an electric telescopic rod, which is fixedly installed on the top surface of the support plate and has an output end rotatably connected to the tilting plate.

[0004] In actual use, conventional dryers are unable to dry the workpiece in stages according to its current humidity during drying operations. They still use high power to dry low-humidity workpieces, resulting in low energy utilization and drying efficiency. In addition, in the traditional drying mode, the cleaning agent is discharged with the air and cannot be recycled, which is not environmentally friendly and causes a waste of resources. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present application provides a high-efficiency and energy-saving staged industrial dryer. The high-efficiency and energy-saving staged industrial dryer of the present application dries the workpiece in two zones through a specific structure. It can adopt two different drying temperatures according to the current humidity of the workpiece, thus achieving targeted drying. It also adopts a heat pump circulation system for drying, with high energy utilization efficiency and high heating temperature. In addition, the condensation recovery device is used to cool the high-temperature air flowing through and can liquefy and recover the cleaning agent carried in the high-temperature air, further improving the recyclability and economy of the equipment and having good environmental benefits.

[0006] The technical solution of this application is:

[0007] The high-efficiency and energy-saving staged industrial dryer includes a dryer body, a heat pump circulation system and a condensation recovery device; the dryer body includes a box body, a mounting bracket and a conveying device; a drying chamber A and a drying chamber B are provided inside the box body; the conveying device is provided on the mounting bracket and passes through the drying chambers A and B; the heat pump circulation system includes a double-layer evaporator, a circulation fan and a circulation pipeline; the double-layer evaporator includes a first heat exchange area and a second heat exchange area, and a partition is provided between the first heat exchange area and the second heat exchange area; the circulation pipeline includes pipeline A, pipeline B, pipeline C, pipeline D, pipeline E and pipeline F; the One end of the A pipeline is connected to the circulation fan, and the other end is connected to the A drying chamber; one end of the B pipeline is connected to the A drying chamber, and the other end is connected to the second heat exchange area; one end of the C pipeline is connected to the second heat exchange area, and the other end is connected to the B drying chamber; one end of the D pipeline is connected to the B drying chamber, and the other end is connected to the condensation recovery device; one end of the E pipeline is connected to the condensation recovery device, and the other end is connected to the first heat exchange area; one end of the F pipeline is connected to the first heat exchange area, and the other end is connected to the circulation fan; the condensation recovery device is used to cool the high-temperature air flowing through and liquefy and recover the cleaning agent carried in the high-temperature air.

[0008] Compared with the prior art, the high-efficiency and energy-saving staged industrial dryer of the present application transports the workpieces to the high-humidity area of the B drying chamber and the low-humidity area of the A drying chamber in sequence for drying through a conveying device, and adopts two stages with different drying temperatures to achieve targeted drying; and adopts a heat pump circulation system to circulate the drying air through a circulating fan to the A pipeline, A drying chamber, B pipeline, the second heat exchange area, C pipeline, B drying chamber, D pipeline, condensation recovery device, E pipeline, the first heat exchange area, and F pipeline to simultaneously dry the workpieces in the A drying chamber and the B drying chamber, with high energy utilization efficiency and high heating temperature; in addition, the condensation recovery device in the present application can not only cool the air when the high-temperature air passes through, but also recover the cleaning agent in the air, further improving the circulation and economy of the equipment, and having good environmental benefits.

[0009] As an optimization, in the aforementioned high-efficiency and energy-saving staged industrial dryer, the condensation recovery device includes a condenser shell, a cleaning agent collector, an air flow channel arranged inside the condenser shell, a heat pump working fluid pipeline arranged inside the air flow channel, and a gas-liquid separator arranged between the air flow channel and the cleaning agent collector; the inlet of the air flow channel is connected to the D pipeline, the first outlet of the air flow channel is connected to the E pipeline, the second outlet of the air flow channel is connected to the cleaning agent collector, and the third outlet of the air flow channel is connected to the outside world. The condensation recovery device adopts this specific structure. After the high-temperature and high-humidity air enters the air flow channel, it releases heat to the heat pump working fluid in the heat pump working fluid pipeline, and becomes low-temperature and low-humidity air. It enters the first heat exchange zone through the E pipeline. At the same time, a portion of the air and the cleaning agent condensed into liquid flow through the gas-liquid separator to the outside world and the cleaning agent collector respectively, thereby realizing the recovery of the cleaning agent.

[0010] Furthermore, in the aforementioned high-efficiency and energy-saving staged industrial dryer, a group of baffles are provided inside the air flow channel. The provision of the baffles can extend the flow path of the fluid, thereby improving the heat exchange efficiency.

[0011] As an optimization, in the aforementioned high-efficiency, energy-saving, staged industrial dryer, a compressor is connected to the first heat exchange zone, the compressor outlet of which is connected to the inlet of the heat pump working fluid pipeline, and the outlet of the heat pump working fluid pipeline is connected to the first heat exchange zone. This structure uses the low-temperature, low-humidity air in the first heat exchange zone as the heat pump working fluid, achieving self-sufficiency through internal circulation of the device, eliminating the need for additional heat pump working fluid and further improving energy efficiency.

[0012] Furthermore, in the aforementioned high-efficiency, energy-saving, staged industrial dryer, a throttle is provided between the outlet of the heat pump working medium pipeline and the first heat exchange zone. The throttle can regulate the flow rate of the heat pump working medium as it flows out and the pressure in the first heat exchange zone, thereby improving the stability of the equipment.

[0013] As an optimization, the aforementioned high-efficiency, energy-saving, staged industrial dryer features partition curtains at the dryer's main inlet and outlet, as well as between drying chambers A and B. This structure, which uses partition curtains to divide the space, is more convenient and less expensive than mechanical door systems.

[0014] As an optimization, in the aforementioned high-efficiency and energy-saving staged industrial dryer, the conveying device is a belt conveyor. The belt conveyor operates smoothly and reliably, and has a simple structure and is easy to maintain.

[0015] As an optimization, in the aforementioned energy-efficient staged industrial dryer, a drying basket is provided on the conveying device for placing the workpieces to be dried. The provision of the drying basket facilitates loading and unloading, thereby improving operational efficiency.

[0016] As an optimization, the aforementioned high-efficiency, energy-saving, phased industrial dryer further includes a control module electrically connected to the dryer body, heat pump circulation system, and condensate recovery device. This structure allows for overall control via the control module, facilitating automated operation of the equipment.

[0017] As an optimization, in the aforementioned energy-efficient, staged industrial dryer, an operation panel is provided on the dryer body, which is electrically connected to the control module. This structure facilitates operation by the operator and enables emergency stop in the event of an emergency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the structure of the energy-efficient phased industrial dryer of this application. Figure 1 ;

[0019] Figure 2 This is a schematic diagram of the structure of the energy-efficient phased industrial dryer of this application. Figure 2 ;

[0020] Figure 3 yes Figure 2 A front cross-sectional view of

[0021] Figure 4 yes Figure 2 Schematic diagram of some structures in ;

[0022] Figure 5 yes Figure 1 Schematic diagram of some structures in ;

[0023] Figure 6 It is a structural diagram of the condensation recovery device in this application;

[0024] Figure 7 It is the cycle principle diagram of this application.

[0025] The markings in the accompanying drawings are: 1-dryer body, 11-box, 111-A drying chamber, 112-B drying chamber, 12-mounting bracket, 13-conveying device; 2-heat pump circulation system, 21-double-layer evaporator, 211-first heat exchange area, 212-second heat exchange area, 213-partition, 22-circulating fan, 23-circulating pipeline, 231-A pipeline, 232-B pipeline, 233-C pipeline, 234-D pipeline , 235-E pipeline, 236-F pipeline; 3-condensation recovery device, 31-condenser shell, 32-cleaning agent collector, 33-air flow channel, 331-inlet, 332-first outlet, 333-second outlet, 334-third outlet, 34-heat pump working fluid pipeline, 35-gas-liquid separator, 36-baffle; 4-control module; 5-compressor; 6-throttle; 7-partition curtain; 8-drying basket; 9-operation panel. DETAILED DESCRIPTION

[0026] The present application is further described below with reference to the accompanying drawings and examples, but is not intended to limit the present application. In the following examples, any content not described in detail or not shown in detail in the accompanying drawings is common knowledge in the art.

[0027] Example (see Figures 1 to 7 ):

[0028] An efficient and energy-saving staged industrial dryer includes a dryer body 1, a heat pump circulation system 2, and a condensation recovery device 3; the dryer body 1 includes a housing 11, a mounting bracket 12, and a conveying device 13; a drying chamber A 111 and a drying chamber B 112 are provided inside the housing 11; the conveying device 13 is provided on the mounting bracket 12 and passes through the drying chamber A 111 and the drying chamber B 112; the heat pump circulation system 2 includes a double-layer evaporator 21, a circulation fan 22, and a circulation pipeline 23; the double-layer evaporator 21 includes a first heat exchange area 211 and a second heat exchange area 212, and a partition 213 is provided between the first heat exchange area 211 and the second heat exchange area 212; the circulation pipeline 23 includes an A pipeline 231, a B pipeline 232, a C pipeline 233, a D pipeline 234, and an E pipeline. 235, F pipeline 236; one end of the A pipeline 231 is connected to the circulation fan 22, and the other end is connected to the A drying chamber 111; one end of the B pipeline 232 is connected to the A drying chamber 111, and the other end is connected to the second heat exchange area 212; one end of the C pipeline 233 is connected to the second heat exchange area 212, and the other end is connected to the B drying chamber 112; one end of the D pipeline 234 is connected to the B drying chamber 112, and the other end is connected to the condensation recovery device 3; one end of the E pipeline 235 is connected to the condensation recovery device 3, and the other end is connected to the first heat exchange area 211; one end of the F pipeline 236 is connected to the first heat exchange area 211, and the other end is connected to the circulation fan 22; the condensation recovery device 3 is used to cool the high-temperature air flowing through and liquefy and recover the cleaning agent in the high-temperature air.

[0029] In this embodiment, the condensation recovery device 3 includes a condenser shell 31, a cleaning agent collector 32, an air flow channel 33 arranged inside the condenser shell 31, a heat pump working fluid pipeline 34 arranged inside the air flow channel 33, and a gas-liquid separator 35 arranged between the air flow channel 33 and the cleaning agent collector 32; the inlet 331 of the air flow channel 33 is connected to the D pipeline 234, the first outlet 332 of the air flow channel 33 is connected to the E pipeline 235, the second outlet 333 of the air flow channel 33 is connected to the cleaning agent collector 32, and the third outlet 334 of the air flow channel 33 is connected to the outside world. The condensation recovery device 3 adopts this specific structure. After the high-temperature and high-humidity air enters the air flow channel 33, it releases heat to the heat pump working fluid in the heat pump working fluid pipeline 34, and becomes low-temperature and low-humidity air. It enters the first heat exchange area 211 through the E pipeline 235. At the same time, part of the air and the cleaning agent condensed into liquid flow through the gas-liquid separator 35 to the outside and the cleaning agent collector respectively, thereby realizing the recovery of the cleaning agent.

[0030] In this embodiment, a group of baffles 36 are provided inside the air flow channel 33. The baffles 36 can extend the flow path of the fluid, thereby improving the heat exchange efficiency.

[0031] As an optimization, in the aforementioned high-efficiency, energy-saving, staged industrial dryer, compressor 5 is connected to first heat exchange zone 211, the outlet of compressor 5 being connected to the inlet of heat pump working fluid pipeline 34, and the outlet of heat pump working fluid pipeline 34 being connected to first heat exchange zone 211. With this structure, the low-temperature, low-humidity air in first heat exchange zone 211 is used as the heat pump working fluid, achieving self-sufficiency through internal circulation of the device, eliminating the need for additional heat pump working fluid and further improving energy utilization.

[0032] In this embodiment, a throttle 6 is provided between the outlet of the heat pump working medium pipe 34 and the first heat exchange area 211. The throttle 6 can adjust the flow rate of the heat pump working medium when it flows out and regulate the pressure in the first heat exchange area 211, thereby improving the stability of the equipment.

[0033] In this embodiment, partition curtains 7 are provided at the inlet and outlet of the dryer body 1 and between the drying chambers A 111 and B 112. This structure uses partition curtains 7 to divide the space, which is more convenient and less expensive than a mechanical door structure.

[0034] In this embodiment, the conveying device 13 is a belt conveyor. The belt conveyor has the characteristics of stable and reliable operation, simple structure and easy maintenance.

[0035] In this embodiment, a drying basket 8 is provided on the conveying device 13 for placing the workpieces to be dried. The drying basket 8 is provided to facilitate loading and unloading, and can improve operating efficiency.

[0036] This embodiment further includes a control module 4, which is electrically connected to the dryer body 1, the heat pump circulation system 2, and the condensation recovery device 3. With this structure, the control module 4 performs overall control, facilitating automated operation of the device.

[0037] In this embodiment, the dryer body 1 is provided with an operation panel 9, which is electrically connected to the control module 4. This structure is convenient for the operator to operate and can be stopped in an emergency in case of an emergency.

[0038] The high-efficiency and energy-saving staged industrial dryer of this embodiment operates through the following steps:

[0039] ① Place the first drying basket 8 containing the workpiece to be dried on the conveyor 13 and start the entire equipment through the operation panel 9;

[0040] ② The conveying device 13 conveys the first drying basket 8 to the drying chamber B 112, the conveying device 13 pauses, and the outlet of the C pipe 233 sprays high-temperature air for drying;

[0041] ③ Place the second drying basket 8 containing the workpiece to be dried on the conveying device 13;

[0042] ④ After waiting for the set drying time, the conveying device 13 conveys the first drying basket 8 to the drying chamber A 111, and at the same time conveys the second drying basket 8 to the drying chamber B 112, and the conveying device 13 pauses;

[0043] ⑤ Place the third drying basket 8 containing the workpieces to be dried on the conveying device 13; the high-temperature air circulates through the circulating fan 22, the A pipeline 231, the A drying chamber 111, the B pipeline 232, the second heat exchange zone 212, the C pipeline 233, the B drying chamber 112, the D pipeline 234, the condensation recovery device 3, the E pipeline 235, the first heat exchange zone 211, and the F pipeline 236 to simultaneously dry the workpieces in the A drying chamber 111 and the B drying chamber 112;

[0044] ⑥ After waiting for the set drying time, the conveying device 13 conveys the first drying basket 8 out of the box 11, and at the same time conveys the second drying basket 8 to the drying chamber A 111, and conveys the third drying basket 8 to the drying chamber B 112, and the conveying device 13 pauses;

[0045] ⑦ Repeat the above steps to dry the workpieces in the drying chamber A 111 and the drying chamber B 112 at the same time.

[0046] The above general description of the invention and the description of its specific embodiments involved in this application should not be construed as limiting the technical solutions of the invention. Based on the disclosure of this application, those skilled in the art may, without violating the constituent elements of the invention involved, add to, subtract from, or combine the disclosed technical features in the above general description and / or specific embodiments (including examples) to form other technical solutions within the scope of protection of this application.

Claims

1. High efficiency and energy saving staged industrial dryer, characterized by: The invention comprises a dryer body (1), a heat pump circulation system (2) and a condensation recovery device (3); the dryer body (1) comprises a housing (11), a mounting bracket (12) and a conveying device (13); a drying chamber A (111) and a drying chamber B (112) are provided inside the housing (11); the conveying device (13) is provided on the mounting bracket (12) and passes through the drying chamber A (111) and the drying chamber B (112); the heat pump circulation system (2) comprises a double-layer evaporator (21), a circulation fan (22) and a circulation pipeline (23); the double-layer evaporator (21) comprises a first heat exchange area (211) and a second heat exchange area (212), and a partition (213) is provided between the first heat exchange area (211) and the second heat exchange area (212); the circulation pipeline (23) comprises an A pipeline (231), a B pipeline (232), a C pipeline (233), a D pipeline (234), and an E pipeline. The A pipeline (231) is connected to the circulation fan (22) at one end, and connected to the A drying chamber (111) at the other end; the B pipeline (232) is connected to the A drying chamber (111) at one end, and connected to the second heat exchange zone (212) at the other end; the C pipeline (233) is connected to the second heat exchange zone (212) at one end, and connected to the B drying chamber (112) at the other end; the D pipeline (234) is connected to the A drying chamber (111) at one end. The E pipe (235) is connected to the B drying chamber (112) and the other end is connected to the condensation recovery device (3); one end of the E pipe (235) is connected to the condensation recovery device (3) and the other end is connected to the first heat exchange zone (211); one end of the F pipe (236) is connected to the first heat exchange zone (211) and the other end is connected to the circulation fan (22); the condensation recovery device (3) is used to cool the high-temperature air flowing through and to liquefy and recover the cleaning agent in the high-temperature air.

2. The high-efficiency and energy-saving staged industrial dryer according to claim 1 is characterized in that: The condensation recovery device (3) comprises a condenser shell (31), a cleaning agent collector (32), an air flow channel (33) arranged inside the condenser shell (31), a heat pump working medium pipeline (34) arranged inside the air flow channel (33), and a gas-liquid separator (35) arranged between the air flow channel (33) and the cleaning agent collector (32); the inlet (331) of the air flow channel (33) is connected to the D pipeline (234), the first outlet (332) of the air flow channel (33) is connected to the E pipeline (235), the second outlet (333) of the air flow channel (33) is connected to the cleaning agent collector (32), and the third outlet (334) of the air flow channel (33) is connected to the outside.

3. The high-efficiency and energy-saving staged industrial dryer according to claim 2 is characterized in that: A group of baffles (36) are provided inside the air flow channel (33).

4. The high-efficiency and energy-saving staged industrial dryer according to claim 3 is characterized by: The first heat exchange area (211) is connected to a compressor (5), the outlet of the compressor (5) is connected to the inlet of a heat pump working medium pipeline (34), and the outlet of the heat pump working medium pipeline (34) is connected to the first heat exchange area (211).

5. The high-efficiency and energy-saving staged industrial dryer according to claim 4 is characterized in that: A throttle (6) is provided between the outlet of the heat pump working medium pipeline (34) and the first heat exchange area (211).

6. The high-efficiency and energy-saving staged industrial dryer according to any one of claims 1 to 5, characterized in that: Partition curtains (7) are provided at the inlet and outlet of the dryer body (1) and between the A drying chamber (111) and the B drying chamber (112).

7. The high-efficiency and energy-saving staged industrial dryer according to claim 6 is characterized in that: The conveying device (13) is a belt conveyor.

8. The high-efficiency and energy-saving staged industrial dryer according to claim 7 is characterized in that: The conveying device (13) is provided with a drying basket (8) for placing workpieces to be dried.

9. The high-efficiency and energy-saving staged industrial dryer according to any one of claims 1 to 5, characterized in that: It also includes a control module (4); the control module (4) is electrically connected to the dryer body (1), the heat pump circulation system (2) and the condensation recovery device (3).

10. The high-efficiency and energy-saving staged industrial dryer according to claim 9, characterized in that: An operating panel (9) is provided on the dryer body (1), and the operating panel (9) is electrically connected to the control module (4).

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