Coating machine with double-evaporator cooling and dehumidifying system

Abstract

The utility model relates to a coating machine with a double-evaporator cooling and dehumidifying system. The coating machine comprises an air supply module, a host module, an air exhaust module and a waste heat recovery module, the air supply module, the host module, the air exhaust module and the waste heat recovery module are sequentially communicated to form a loop; the air supply module and the compressor are provided with two loops for connection, the air supply module and the throttling expansion device are provided with two loops for connection, and the compressor is communicated with the throttling expansion device to form cold supply circulation; the air supply module and the heat exchanger are provided with two loops for connection to form heat supply circulation; at least one loop in the cold supply circulation is provided with a valve; at least one loop in the heat supply circulation is provided with a valve; the air supply module is provided with a condenser, the condenser communicates with the compressor, and the condenser communicates with the throttling expansion device; and the condenser is communicated with the heat exchanger.

Description

Technical Field

[0001] The present application relates to the field of coating machines, and in particular to a coating machine with a double evaporator cooling and dehumidification system. Background Art

[0002] Coating tablets is a common pharmaceutical process, and a coating machine is generally used to perform large-scale coating operations on tablets. Existing coating machines are mainly composed of a host system, a liquid supply system, an air supply system, and an exhaust system. During the coating process, when the air supply system of the coating machine supplies air to the host system of the coating machine, the air supply system needs to use cooling equipment and heating equipment separately. Generally, a chiller and a boiler are used to provide a cold source and a heat source to the air supply system respectively. The energy utilization rate is low, and in summer and winter, problems such as excessive resource use will occur, which makes it difficult for users to meet the requirements of energy conservation and emission reduction for coating machines. Utility Model Content

[0003] In view of this, the present application proposes a coating machine with a double evaporator cooling and dehumidification system to solve the above problems.

[0004] In one aspect of the present application, a coating machine with a dual evaporator cooling and dehumidification system is proposed, comprising: an air supply module, a main unit module, an exhaust module and a waste heat recovery module; the air supply module, the main unit module, the exhaust module and the waste heat recovery module are connected in sequence to form a loop; the air supply module is connected to a compressor with two loops, the air supply module is connected to a throttling expansion device with two loops, the compressor is connected to the throttling expansion device to form a cooling cycle; the waste heat recovery module has a heat exchanger, the air supply module is connected to the heat exchanger with two loops to form a heating cycle; at least one loop in the cooling cycle is provided with a valve; at least one loop in the heating cycle is provided with a valve; the air supply module has a condenser, the condenser is connected to the compressor, the condenser is connected to the throttling expansion device; the condenser is connected to the heat exchanger.

[0005] In a possible implementation, the air supply module also includes: an evaporator and a dehumidifier; the evaporator, the compressor, the condenser and the throttling expansion device are connected in sequence to form the cooling cycle; the dehumidifier is arranged in the middle of the air supply module.

[0006] In a possible implementation, the air supply module further includes: a steam heater and an air blower; the condenser, the heat exchanger, the air blower and the steam heater are connected in sequence to form the heat supply cycle.

[0007] In a possible implementation, the air supply module further includes: a primary filter, a medium filter and a high efficiency filter; the primary filter and the medium filter are connected to each other, and the high efficiency filter is arranged on one side of the outlet end of the air supply module.

[0008] In a possible implementation, the heat exchanger, the compressor and the throttling expansion device are connected in a serial loop.

[0009] In a possible implementation, a first valve is provided between the condenser and the evaporator; and a second valve is provided between the heat exchanger and the evaporator.

[0010] In a possible implementation, it further includes: a liquid supply module; the liquid supply module is connected to the host module, the liquid supply module is arranged on one side of the host module, and the liquid supply module is close to the air supply module.

[0011] In a possible implementation, the exhaust module has a dust collector and a fan; the host module, the dust collector, the fan and the waste heat recovery module are connected in sequence; the fan is arranged in the middle and lower part of the dust collector, and the fan is arranged adjacent to the dust removal module.

[0012] In a possible implementation, the air supply module also includes: an exhaust fan and an electric heater; the exhaust fan is arranged above the condenser, and the exhaust fan is arranged near the inlet end of the air supply module relative to the condenser; the electric heater is arranged above the condenser, and the electric heater is arranged near the outlet end of the air supply module relative to the exhaust fan.

[0013] In a possible implementation, the dehumidifier is a rotary dehumidifier.

[0014] Beneficial effects of this application:

[0015] The coating machine with a dual evaporator cooling and dehumidification system proposed in this embodiment replaces the original cooling module and boiler, which is energy-saving and environmentally friendly, and improves the utilization rate of energy. It solves the problem that the coating machine module requires a chiller and a boiler to provide cooling and heating at the same time, and the coating machine does not need a separate cold and heat source device, and can independently achieve outdoor air cooling and dehumidification in summer, as well as preheating the air through a heat exchanger in winter. It solves the problem of waste heat in the exhaust gas generated by the coating machine, makes full use of the waste heat in the exhaust gas, and improves the utilization rate of energy. During the non-cooling season or heating season, a general coating machine still needs to turn on a chiller or a boiler to power the air supply module of the coating machine, but the coating machine only needs internal circulation during this period to solve the problem of cooling, dehumidification and heating. Specifically, the present invention can integrate the cooling, dehumidification and preheating (or heating) of the air supply module, thereby achieving the purpose of energy saving and environmental protection.

[0016] Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the present application and, together with the description, serve to explain the principles of the present application.

[0018] Figure 1 A main structural diagram of a coating machine with a dual evaporator cooling and dehumidification system according to an embodiment of the present application is shown;

[0019] Figure 2 A schematic diagram showing an air supply module of a coating machine with a dual evaporator cooling and dehumidification system according to an embodiment of the present application;

[0020] Figure 3 A schematic diagram showing a summer mode of a coating machine with a dual evaporator cooling and dehumidification system according to an embodiment of the present application;

[0021] Figure 4 A schematic diagram showing the winter mode of a coating machine with a dual evaporator cooling and dehumidification system according to an embodiment of the present application. DETAILED DESCRIPTION

[0022] Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0023] Among them, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0026] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0027] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the coating machine with a dual evaporator cooling and dehumidification system includes: an air supply module 1, a main unit module 3, an exhaust module and a waste heat recovery module; the air supply module 1, the main unit module 3, the exhaust module and the waste heat recovery module are connected in sequence to form a loop; the air supply module 1 and the compressor 7 are provided with two loop connections, the air supply module 1 and the throttling expansion device 8 are provided with two loop connections, the compressor 7 is connected to the throttling expansion device 8 to form a cooling cycle; the waste heat recovery module has a heat exchanger 6, the air supply module 1 and the heat exchanger 6 are provided with two loop connections to form a heating cycle; at least one loop in the cooling cycle is provided with a valve; at least one loop in the heating cycle is provided with a valve; the air supply module 1 has a condenser 1-5, the condenser 1-5 is connected to the compressor 7, and the condenser 1-5 is connected to the throttling expansion device 8; the condenser 1-5 is connected to the heat exchanger 6.

[0028] The coating machine with a dual evaporator cooling and dehumidification system proposed in this embodiment replaces the original cooling module and boiler, which is energy-saving and environmentally friendly, and improves the utilization rate of energy. The problem that the coating machine module needs a chiller and a boiler to provide cooling and heating at the same time is solved, and the coating machine does not need a separate cold and heat source device. The outdoor air in summer can be used alone through the heat exchanger 6 to achieve cooling, dehumidification and heating, as well as preheating of the air in winter, which solves the problem of waste heat of the coating machine exhaust gas, makes full use of the exhaust gas containing residual heat in the coating machine, and solves the problem of energy waste. During the non-cooling season or heating season, a general coating machine still needs to turn on the chiller or boiler to power the air supply module 1 of the coating machine, but the coating machine only needs internal circulation during this period to solve the problem of cooling, dehumidification and heating. Specifically, the present application can integrate the cooling, dehumidification and preheating (or heating) of the air supply module, thereby achieving the purpose of energy saving and environmental protection. Usually, the exhaust gas is discharged into the atmosphere after being processed, but the present coating machine can make full use of the waste heat of the exhaust gas to preheat the air in winter or transition seasons in the air supply module 1, thereby improving the utilization rate of energy.

[0029] Summer working condition: the first valve K1 is open and the second valve K2 is closed. Since the outdoor air temperature is high and the humidity is high in summer, but the air supply of the coating machine requires high-temperature and dry air, the coating machine is provided with a cooling, dehumidification and heating mode of the coating machine. Among them, the humid and high-temperature air in summer passes through the primary filter 1-1 and the medium-efficiency filter 1-2, and then enters the evaporator 1-3 for cooling and dehumidification. At this time, the first valve K1 is opened and the second valve K2 is closed. The air exchanges heat with the refrigerant in the evaporator 1-3. At this time, the refrigerant in the evaporator 1-3 absorbs heat and evaporates, becoming a low-temperature and low-pressure gas and entering the compressor 7. The air after cooling and dehumidification enters the dehumidifier 1-4 for deep dehumidification, and then enters the condenser 1-5 for heating. The refrigerant becomes a high-temperature and high-pressure gas from the compressor 7 and enters the condenser 1-5. After the high-temperature and high-pressure refrigerant gas exchanges heat with the air, the refrigerant becomes a high-temperature and high-pressure liquid. After passing through the throttling expansion device 8, it becomes a low-temperature and low-pressure two-phase refrigeration system, and then enters the evaporator 1-3 for reciprocating circulation. Whether to use the steam heat exchanger 1-6 for heating is determined according to the temperature required for tablet coating. Finally, the high-temperature air is sent into the host module 3 through the blower 1-7 and the high-efficiency filter 1-8. The high-temperature air coats the tablets. The coated air enters the dust collector 4 for dust removal.

[0030] Winter working condition: the first valve K1 is closed and the second valve K2 is opened. In winter, the air does not need to be cooled and dehumidified, so the functions of the evaporator 1-3 and the dehumidifier 1-4 are not enabled. At this time, the first valve K1 is closed and the second valve K2 is opened. The air outside the air room passes through the primary filter 1-1 and the intermediate filter 1-2, and then enters the condenser 1-5 to preheat the air. At this time, the exhaust gas discharged by the coating machine passes through the heat exchanger 6, and the refrigerant in the heat exchanger 6 absorbs heat and evaporates to become a low-temperature and low-pressure gas. After entering the compressor 7 and becoming a high-temperature and high-pressure gas, it enters the condenser 1-5 and releases heat to the air to achieve the effect of preheating the air. If the preheated air reaches the air use temperature of the coating machine, it is sent to the main unit through the blower 1-7; if it does not reach the use temperature, it is reheated to the temperature required for coating through the steam heater 1-6.

[0031] In one specific embodiment, the air supply module 1 also includes: an evaporator 1-3 and a dehumidifier 1-4; the evaporator 1-3, the compressor 7, the condenser 1-5 and the throttling expansion device 8 are connected in sequence to form a cooling cycle; the dehumidifier 1-4 is arranged in the middle of the air supply module.

[0032] In one specific embodiment, the air supply module 1 also includes: a steam heater 1-6 and an air blower 1-7; the condenser 1-5, the heat exchanger 6, the air blower 1-7 and the steam heater 1-6 are connected in sequence to form a heating cycle.

[0033] In one specific embodiment, the air supply module 1 also includes: a primary filter 1-1, a medium filter 1-2 and a high efficiency filter 1-8; the primary filter 1-1 and the medium filter 1-2 are connected, and the high efficiency filter 1-8 is arranged on the outlet side of the air supply module 1.

[0034] In one specific embodiment, the heat exchanger 6, the compressor 7 and the throttling expansion device 8 are connected in a loop in sequence.

[0035] In one of the specific embodiments, a first valve K1 is provided between the condenser 1-5 and the evaporator 1-3; a second valve K2 is provided between the heat exchanger 6 and the evaporator 1-3. In this embodiment, it should be noted that the functional section of the 1-3 evaporator is provided with a first valve K1 and a second valve K2, and the opening degree can be adjusted from 0% to 100% by the opening degree of the blades. In the summer mode, the second valve K2 is closed and the first valve K1 is opened, so that the air exchanges heat with the refrigerant in the evaporator 1-3 through the first valve K1, and the refrigerant absorbs the heat of the air and becomes gas and then enters the compressor 7; in the winter mode and the transition season mode, the first valve K1 is closed to prevent the air from exchanging heat with the refrigerant in the evaporator 1-3, and the second valve K2 is opened, and the air flows out through the upper part of the cavity.

[0036] In one of the specific embodiments, it also includes: a liquid supply module 2; the liquid supply module 2 is connected to the host module 3, the liquid supply module 2 is arranged on one side of the host module 3, and the liquid supply module 2 is close to the air supply module 1.

[0037] In one specific embodiment, the exhaust module has a dust collector 4 and a fan 5; the host module 3, the dust collector 4, the fan 5 and the waste heat recovery module are connected in sequence; the fan 5 is arranged in the middle and lower part of the dust collector 4, and the fan 5 is arranged adjacent to the dust removal module.

[0038] In one specific embodiment, the air supply module 1 also includes: an exhaust fan 1-10 and an electric heater 1-9; the exhaust fan 1-10 is arranged above the condenser 1-5, and the exhaust fan 1-10 is arranged near the inlet end of the air supply module 1 relative to the condenser 1-5; the electric heater 1-9 is arranged above the condenser 1-5, and the electric heater 1-9 is arranged near the outlet end of the air supply module 1 relative to the exhaust fan 1-10.

[0039] In one specific embodiment, the dehumidifiers 1-4 are rotary dehumidifiers. The operation and maintenance of the rotary dehumidifier are simple. The air can be dried by operating the dehumidification wheel, the regeneration heater and the blower, so the operation is very simple. In addition, it is a dry dehumidification type, does not require the addition of moisture absorbent, is easy to maintain, and has low operation and maintenance costs.

[0040] In addition, it should be noted that the air supply module 1 is mainly used to provide hot air to the module to dry the tablet bed. It is mainly composed of a heat exchanger 6 (steam or electric heating) and a fan 5 air duct. In order to meet the cleanliness requirements, primary, medium and high-efficiency three-stage filters are installed. The liquid supply module 2 is mainly used to spray or drip the coating material onto the surface of the tablet bed to achieve the coating process. The host module 3 is mainly used to rotate the tablets in the coating pot and stir them evenly during the coating process. The exhaust module is mainly used to discharge the humid air during the coating process and filter out the dust generated during the coating process to ensure that the exhaust meets the national environmental protection requirements. It is composed of a group of bag dust collectors plus a fan 5 and an air duct.

[0041] It should be noted that although the present application introduces a coating machine with a dual evaporator cooling and dehumidification system as an example, those skilled in the art will understand that the present application should not be limited thereto. In fact, the user can flexibly set it according to personal preferences and / or actual application scenarios, as long as it is reasonable.

[0042] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A coating machine with a double evaporator cooling and dehumidification system, characterized in that: include: An air supply module, a host module, an exhaust module and a waste heat recovery module; the air supply module, the host module, the exhaust module and the waste heat recovery module are connected in sequence to form a loop; The air supply module is connected to the compressor by two circuits, the air supply module is connected to the throttling expansion device by two circuits, the compressor is connected to the throttling expansion device to form a cooling cycle; The waste heat recovery module has a heat exchanger, and the air supply module is connected to the heat exchanger by two loops to form a heat supply cycle; At least one circuit in the cooling cycle is provided with a valve; at least one circuit in the heating cycle is provided with a valve; The air supply module has a condenser, the condenser is connected to the compressor, the condenser is connected to the throttling expansion device; the condenser is connected to the heat exchanger.

2. The coating machine with a double evaporator cooling and dehumidification system according to claim 1, characterized in that: The air supply module further includes: an evaporator and a dehumidifier; the evaporator, the compressor, the condenser and the throttling expansion device are connected in sequence to form the cooling cycle; the dehumidifier is arranged in the middle of the air supply module.

3. The coating machine with a double evaporator cooling and dehumidification system according to claim 1, characterized in that: The air supply module further includes: a steam heater and an air blower; the condenser, the heat exchanger, the air blower and the steam heater are connected in sequence to form the heat supply cycle.

4. The coating machine with a double evaporator cooling and dehumidification system according to claim 1, characterized in that: The air supply module further includes: a primary filter, a medium filter and a high efficiency filter; the primary filter and the medium filter are connected and arranged, and the high efficiency filter is arranged at one side of the outlet end of the air supply module.

5. The coating machine with a double evaporator cooling and dehumidification system according to claim 1, characterized in that: The heat exchanger, the compressor and the throttling expansion device are connected in a serial loop.

6. The coating machine with a double evaporator cooling and dehumidification system according to any one of claims 1 to 5, characterized in that: A first valve is arranged between the condenser and the evaporator; and a second valve is arranged between the heat exchanger and the evaporator.

7. The coating machine with a double evaporator cooling and dehumidification system according to any one of claims 1 to 5, characterized in that: Also includes: Liquid supply module; The liquid supply module is connected to the host module, the liquid supply module is arranged on one side of the host module, and the liquid supply module is close to the air supply module.

8. The coating machine with a double evaporator cooling and dehumidification system according to claim 2, characterized in that: The dehumidifier is a rotary dehumidifier.

9. The coating machine with a double evaporator cooling and dehumidification system according to any one of claims 1 to 5, characterized in that: The air supply module also includes: an exhaust fan and an electric heater; the exhaust fan is arranged above the condenser, and the exhaust fan is arranged near the inlet end of the air supply module relative to the condenser; the electric heater is arranged above the condenser, and the electric heater is arranged near the outlet end of the air supply module relative to the exhaust fan.

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