CN203267453U - Energy-saving type gravure press - Google Patents

Abstract

The utility model discloses an energy-saving gravure printing machine, which is characterized in that it comprises a drying box, a heat pump, a heat pump condenser, a fan, a heat pump evaporator, a first cold water circulation system, a cold storage water tank, a second cold water circulation system, end heat exchanger, wind cabinet; the heat pump evaporator is connected to the cold storage water tank through the first cold water circulation system and generates heat exchange; the cold storage water tank is connected to the cold end heat exchanger through the second cold water circulation system and generates heat exchange; The cold-end heat exchanger is placed inside the wind cabinet, and the cold-end heat exchanger can be used for cooling the indoor environment after cooling the passing air through the fan in the wind cabinet. Utilizing the high heating energy efficiency ratio of the heat pump, it saves a lot of electricity compared with the heating of the electric heating pipe; the cooling capacity associated with the evaporator when the heat pump is used for heating can be used for cooling the environment or cooling the equipment, reducing the power consumption of additional cooling; the cold storage tank can be connected Multiple cold-end heat exchangers and multiple sets of heat pump units are convenient for adding equipment or heat pump units in the future.

Description

Energy-saving gravure printing machine

Technical field:

The utility model relates to an energy-saving gravure printing machine, in particular to a gravure printing machine using a heat pump for heating and drying, and relates to saving and utilizing the cold generated by the heat pump, which belongs to thermal energy technology, refrigeration technology and energy-saving technology field. the

Background technique:

In the flexible packaging industry, equipment such as gravure printing machines is commonly used, which requires a lot of heat to dry the product. At present, the heating method basically adopts electric heating tube heating or heating by combustion. Due to the state's control over combustion emissions, the use of equipment such as boilers, heat-conducting oil furnaces, and hot air stoves has been greatly restricted, and the method of electric heating requires expensive electricity and capacity expansion fees. In addition, in order to improve the working environment in high temperature weather, a large amount of cold air is required in the factory room, and the power consumption cost of air conditioning is very high. Therefore, enterprises that use a large amount of heat energy and air conditioning need to find a way that is both environmentally friendly and low-cost. the

Now some companies use heat pumps to directly supply heat and cooling to equipment and the surrounding environment. Since heat pumps can only generate heat and cooling at the same time during work, equipment often stops midway during use, causing indoor temperatures to fluctuate. the

Utility model content:

In order to solve the above technical problems, the utility model provides a printing machine, which uses a heat pump for heating to solve the problem of high energy consumption encountered by the gravure printing machine drying system that requires a large amount of hot air, and simultaneously uses the heat pump to heat The cooling capacity is saved, and the cooling capacity is transported to the place where it is needed according to the needs of different periods. While obtaining heat, the associated cooling capacity is used for cooling equipment and cooling the environment, which solves the problem of heat pump cooling and heat output at the same time. There is a contradiction between using hot and cold at the same time. the

The utility model can take the following technical solutions:

The utility model includes a drying box, a heat pump, a heat pump condenser, a fan, a heat pump evaporator, a first cold water circulation system, a cold storage water tank, a second cold water circulation system, a cold end heat exchanger, and a wind cabinet; the heat pump condenser It is connected with the drying box, and a fan blowing to it is provided near the heat pump condenser, and the heat pump condenser heats the air flowing through the fan and sends it to the drying box; the heat pump evaporator is connected to the cold storage tank through the first cold water circulation system And generate heat exchange; the cold storage water tank is connected to the cold end heat exchanger through the second cold water circulation system and generate heat exchange; the cold end heat exchanger is placed inside the wind cabinet, and the cold end heat exchanger can pass through the wind The fan in the cabinet cools the passing air and is used for cooling the indoor environment. the

The utility model can further take the following improvement measures:

There are multiple heat pumps and heat pump condensers, and the heat pump condensers are respectively arranged at the air inlet position of the drying box of each printing unit of the gravure printing machine;

The cold water circulation system is respectively provided with a water pump;

The cold storage water tank is provided with an insulation layer, and is provided with a plurality of inlets and outlets, which are respectively connected with the first cold water circulation system and the second cold water circulation system;

The first cold water circulation system can be composed of multiple paths, which are respectively connected to the evaporators of multiple sets of heat pumps;

The second cold water circulation system can be branched out into multiple branches, which are respectively connected to multiple sets of cold-end heat exchangers, and each branch is respectively provided with a flow control device;

The cold end heat exchanger is a gas-liquid heat exchanger, which is composed of heat pipes and fins;

The heat pump condenser heats the passing air through the fan and sends it to the drying box; the cold end heat exchanger cools the passing air through the fan in the wind cabinet to cool the indoor environment. the

The multi-channel second cold water circulation system can deliver cooling capacity to multiple air cabinets to cool down multiple indoor spaces;

The second cold water circulation system can be added to deliver the cold energy to the cooling roller of the printing press or other equipment that needs to be cooled;

There can be one cold storage tank, or multiple series connection;

The cold storage tank can be replaced by an insulated water tank. the

Above-mentioned technical scheme has such technical effect:

1. Utilizing the higher heating energy efficiency ratio of the heat pump, it saves a lot of electricity than the electric heating tube;

2. The cooling capacity associated with the evaporator when the heat pump is used for heating can be used for cooling the environment or cooling the equipment, reducing the power consumption of additional cooling;

3. Using the cold storage tank, you can stagger the periods of heat and cold according to the requirements of use;

4. The cold storage tank can be connected to multiple cold-end heat exchangers and multiple heat pump units, which is convenient for adding equipment or heat pump units in the future. the

Description of drawings

Fig. 1 is one of the structural schematic diagrams of the utility model. the

Fig. 2 is a structural schematic diagram of the cold end heat exchanger of the present invention. the

Detailed ways

Below in conjunction with specific embodiment the utility model is described in detail:

Embodiment 1: As shown in Figure 1 and Figure 2, the utility model includes a drying box 1, a heat pump 2, a heat pump condenser 3, a fan 4, a heat pump evaporator 5, a first cold water circulation system 6, a cold storage tank 7, a second Two cold water circulation systems 8, cold end heat exchangers 9, wind cabinets 10; the heat pump condenser 3, fan 4 communicate with the drying box 1; the heat pump evaporator 3 is connected to cold storage water through the first cold water circulation system 6 tank 7 and generate heat exchange; the cold storage water tank 7 is connected to the cold end heat exchanger 9 through the second cold water circulation system 8 and generate heat exchange; the cold end heat exchanger 9 is placed inside the wind cabinet 10 . the

There are multiple heat pumps 2 and heat pump condensers 3, and the heat pump condensers 3 are respectively arranged at the air inlet position of the drying box 1 of each printing unit of the gravure printing machine;

The first cold water circulation system 6 and the first cold water circulation system 8 are respectively provided with water pumps 11;

The cold storage water tank 7 is provided with an insulation layer, and is provided with a plurality of inlets and outlets, which communicate with the first cold water circulation system 6 and the second cold water circulation system 8 respectively;

The first cold water circulation system 6 can be composed of multiple paths, which are respectively connected to multiple sets of heat pump evaporators 5;

The second cold water circulation system can be branched into a plurality of branches, which are respectively connected to multiple sets of cold end heat exchangers 9, and each branch is respectively provided with a flow control device;

The cold end heat exchanger 9 is a gas-liquid heat exchanger, which is composed of heat pipes and cooling fins. The outlet and the inlet of the heat pipe are respectively connected to the corresponding water circulation system and communicated with the corresponding pipeline. the

The heat pump condenser 3 heats the passing air through a fan and sends it to the drying box 1 . The cold end heat exchanger 9 cools the air passing through by the fan in the wind cabinet 10 and is used for cooling the indoor environment. the

working principle:

When the heat pump system is working, it can transfer the heat from the evaporator to the condenser. The heat obtained by the condenser is blown to the drying box of the printing machine by the fan to dry the ink on the film. The heat generated by the heat pump evaporator passes through The first cold water circulation system uses water as the cold energy transmission medium to cool down the water in the cold storage tank. the

The chilled water in the cold storage tank passes through the second cold water circulation system and uses water as the cooling energy transmission medium to transmit the cooling energy to the cold end heat exchanger installed in the air conditioner. Cool down, make cold wind to cool down the indoor environment. the

When it is necessary to cool down multiple indoor spaces, each air-conditioning cabinet can be equipped with a second cold water circulation system or only control the flow of cold water through the branch valve to form one or more second hot water circulation systems. A set of air-conditioning wind cabinets for cooling. the

The cold water source for cooling on printing or other equipment can also be taken from the cold water output from the cold storage tank through a separate set of second cold water circulation system, including circulating and cooling the cooling roller of the printing press. the

The first cold water circulation system is arranged below the cold storage water tank at the water inlet of the cold storage water tank and the water outlet of the second cold water circulation system. When the first cold water circulation system cools down the water in the water tank at the beginning, due to the The specific gravity is relatively large, and the convection speed of the cold water upwards is very slow, so that the temperature of the water in the lower layer can be lowered quickly, without waiting for the entire water temperature in the water tank to drop, the low-level water outlet of the second cold water circulation system can deliver low-temperature cold water Cooling can reduce the waiting time for cooling. the

Utilizing the cold storage function of the cold storage water tank can solve the contradiction that the heat pump outputs cold and heat at the same time but uses heat and cold at different times. the

According to the time and cycle of the production interval and the time interval between heating and cooling, a cold storage tank with a suitable volume can be selected. the

Application Example 1:

The utility model includes a drying box, a heat pump, an electric heating pipe, a heat pump condenser, a fan, a heat pump evaporator, a first cold water circulation system, a cold storage water tank, a second cold water circulation system, a cold end heat exchanger, and a wind cabinet; The heat pipe is arranged and communicated between the heat pump condenser and the drying box; the heat pump evaporator is connected to the cold storage water tank through the first cold water circulation system and generates heat exchange; the cold storage water tank is connected to the cold end through the second cold water circulation system for heat exchange and heat exchange; the cold end heat exchanger is placed inside the wind cabinet. the

The above scheme makes up for the limitation of the heating temperature of the heat pump by adding electric heating tubes. On the basis of heat pump heating, some heat can be appropriately supplemented and used when the temperature of the hot air in the drying unit of the gravure printing machine exceeds 75°C. the

Application Example 2:

The utility model includes a drying box, a heat pump, a heat pump condenser, a fan, a heat pump evaporator, a first cold water circulation system, a cold storage water tank, a second cold water circulation system, a cold end heat exchanger, and a wind cabinet; the heat pump condenser , the blower fan and the drying box are connected; the heat pump evaporator is connected to the cold storage water tank through the first cold water circulation system and generates heat exchange; the cold storage water tank passes through the second cold water circulation system, and can be respectively arranged in the air-conditioning wind cabinet through the switching device The cold end heat exchanger for heat exchange or heat exchange with the cold end heat exchanger arranged at the outlet of the waste heat exhaust main pipe of the drying box. the

The above scheme is suitable for the period when the environment does not need to cool down in low-temperature climates. The cold-end heat exchanger absorbs the waste heat of the exhaust gas discharged from the gravure printing machine, and the evaporator of the heat pump can obtain more heat to improve the heating energy efficiency ratio. the

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models. the

Claims (7)

1. An energy-saving gravure printing machine, characterized in that it includes a drying box, a heat pump, a heat pump condenser, a fan, a heat pump evaporator, a first cold water circulation system, a cold storage water tank, a second cold water circulation system, and a cold end heat exchange The heat pump condenser is connected with the drying box, and a fan blowing to it is arranged near the heat pump condenser, and the heat pump condenser heats the air flowing through the fan and sends it to the drying box; the heat pump evaporates The device is connected to the cold storage water tank through the first cold water circulation system and generates heat exchange; the cold storage water tank is connected to the cold end heat exchanger through the second cold water circulation system and generates heat exchange; the cold end heat exchanger is placed inside the wind cabinet, The cold end heat exchanger can be used to cool down the indoor environment after cooling the air passing through by the fan in the wind cabinet. the 2. The energy-saving gravure printing machine according to claim 1, characterized in that: there are multiple heat pump condensers, and the heat pump condensers are respectively arranged at the air inlet positions of the drying boxes of each printing unit of the gravure printing machine. the 3. The energy-saving gravure printing machine according to claim 1, characterized in that: said cold water circulation system is respectively equipped with water pumps. the 4. The energy-saving gravure printing machine according to claim 1, characterized in that: the cold storage water tank is provided with an insulating layer, and is provided with a plurality of inlets and outlets, which are connected with the first cold water circulation system and the second cold water circulation system respectively. The circulatory system is connected. the 5. The energy-saving gravure printing machine according to claim 1, characterized in that: the first cold water circulation system is composed of multiple channels, which are respectively connected to multiple heat pump evaporators. the 6. The energy-saving gravure printing machine according to claim 1, characterized in that: the second cold water circulation system is branched out into a plurality of branches, respectively connected to multiple sets of cold-end heat exchangers, and each branch is respectively equipped with flow control device. the 7. The energy-saving gravure printing machine according to claim 1, characterized in that: said cold end heat exchanger is a gas-liquid heat exchanger, which is composed of heat pipes and cooling fins. the

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