Recycling system of multicolor photogravure press

Abstract

The utility model belongs to the technical field of photogravure presses, and provides a recovery system of a multicolor photogravure press, which comprises a color cell oven, a storage tank, a heat exchange pipe and a condenser pipe, the color cell oven is provided with an air inlet pipe and an air outlet pipe, the air inlet pipe is provided with a hot air conveying mechanism, and the heat exchange pipe is provided with a closed end and an open end connected with the condenser pipe. The air outlet pipe communicates with the heat exchange pipe, and an air inducing mechanism is arranged in the condensation pipe. The air inlet pipe is located in the heat exchange pipe. The air inlet pipe of the color cell drying oven is arranged in the heat exchange pipe, and the air outlet pipe of the color cell drying oven is communicated with the heat exchange pipe, so that exhausted air can be cooled, the difficulty of subsequently recovering liquid alcohol is reduced, a heat value can be transferred to hot air in the air inlet pipe, and waste heat is fully utilized.

Description

Technical Field

[0001] This utility model belongs to the technical field of gravure printing machines, specifically a recycling system for a multicolor gravure printing machine. Background Technology

[0002] The main characteristic of gravure printing is that the image areas on the printing plate are recessed, while the blank areas are raised, the exact opposite of the plate structure of letterpress printing. When printing a single color, the printing plate is first immersed in an ink bath and rolled, coating the entire surface of the plate with an ink layer. Then, the ink layer on the blank areas of the plate is scraped off, leaving the raised areas blank, while the recessed areas are filled with ink, with the ink layer thicker in deeper recesses. The machine uses pressure to transfer the ink from the recessed areas to the printed material, thus obtaining the printed product.

[0003] CN202211010370.4 discloses a water-based ink drying and alcohol recovery system, including an oven divided into region A and region B. Region A is connected to a plate heat exchanger, which is connected to a first evaporator. The first evaporator is connected to a moisture-absorbing component, which contains a polymer moisture-absorbing material, including saturated and unsaturated states. The moisture-absorbing component is connected to a first condenser, which is connected to a fan, and the fan is connected to region A. Region B is connected to a second condenser, which is connected to a second electric heater. The second electric heater is connected to the moisture-absorbing component, which is connected to a second evaporator, and the second evaporator is connected to the first evaporator.

[0004] In the above technical solution, the air is dehumidified and heated by the first heater and the second heater. However, in this way, the heat in the air is easily lost when passing through the pipes, resulting in poor utilization of waste heat. Utility Model Content

[0005] The purpose of this invention is to solve the above problems and provide a recycling system for a multicolor gravure printing machine. This system sets the air inlet pipe of the color group oven inside the heat exchange tube and connects the air outlet pipe of the color group oven to the heat exchange tube. This not only cools the exhaust air, reducing the difficulty of subsequent liquid alcohol recycling, but also transfers the calorific value to the hot air in the air inlet pipe, making full use of the waste heat.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A recycling system for a multicolor gravure printing machine includes a color group oven and a storage tank. The color group oven is equipped with an air inlet pipe and an air outlet pipe. The air inlet pipe is equipped with a hot air conveying mechanism. The system also includes a heat exchange pipe and a condenser pipe. The heat exchange pipe has a closed end and an open end connected to the condenser pipe. The air outlet pipe is connected to the heat exchange pipe. The condenser pipe is equipped with an air induced draft mechanism.

[0008] The air inlet duct is located inside the heat exchange tube, which is used to transfer the calorific value of the air discharged from the color group oven to the air inlet duct;

[0009] The condenser cools the air discharged from the color group oven to convert gaseous alcohol into liquid alcohol, which is then transported to a storage tank for storage.

[0010] In the recycling system of the aforementioned multicolor gravure printing machine, the air inlet pipe includes an air inlet section, a bending section, and a connecting section connected in sequence. The air inlet section is connected to the air inlet of the color group oven, the bending section is located inside the heat exchange pipe, and the connecting section is connected to the output end of the hot air conveying mechanism.

[0011] In the recycling system of the aforementioned multicolor gravure printing machine, the bent section accounts for 70% to 80% of the length of the air inlet pipe.

[0012] In the recycling system of the aforementioned multicolor gravure printing machine, the hot air conveying mechanism is a dehumidifier.

[0013] In the recycling system of the aforementioned multicolor gravure printing machine, the air inlet pipe is made of stainless steel.

[0014] In the recycling system of the aforementioned multicolor gravure printing machine, the heat exchange tubes are made of PP material.

[0015] In the recycling system of the aforementioned multicolor gravure printing machine, multiple condenser filters are installed on the condenser tube.

[0016] The recycling system of the aforementioned multicolor gravure printing machine also includes a cooling water tank, with one end of the condenser located in the cooling water tank.

[0017] In the recycling system of the aforementioned multicolor gravure printing machine, the induced draft mechanism is an induced draft fan.

[0018] In the recycling system of the aforementioned multicolor gravure printing machine, there are multiple color group drying ovens.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] In this invention, the heat exchange tube can accommodate the air inlet tube, and the heat value of the high-calorific-value air discharged from the color group oven is transferred to the low-calorific-value air inlet tube. In this way, the discharged air can be cooled, reducing the difficulty of subsequent liquid alcohol recovery, and the heat value can be transferred to the hot air in the air inlet tube, making full use of the waste heat. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the recycling system of a multicolor gravure printing machine according to Embodiment 1;

[0022] The figure labels for each figure are as follows:

[0023] 1. Color group drying oven; 11. Air inlet duct; 111. Air inlet section; 112. Bending section; 113. Connecting section; 12. Air outlet duct; 2. Hot air conveying mechanism; 3. Heat exchange tube; 31. Closed end; 32. Open end; 4. Condenser tube; 41. Condenser filter; 5. Storage tank; 6. Cooling water pool; 7. Exhaust fan mechanism. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] refer to Figure 1 A recycling system for a multicolor gravure printing machine includes a color group oven 1 and a storage tank 5. The color group oven 1 is provided with an air inlet pipe 11 and an air outlet pipe 12. The air inlet pipe 11 is provided with a hot air conveying mechanism 2. It also includes a heat exchange pipe 3 and a condenser pipe 4. The heat exchange pipe 3 has a closed end 31 and an open end 32 connected to the condenser pipe 4. The air outlet pipe 12 is connected to the heat exchange pipe 3. The condenser pipe 4 is provided with an air induced draft mechanism 7.

[0027] The air inlet pipe 11 is located inside the heat exchange tube 3, which is used to transfer the heat value of the air discharged from the color group oven 1 to the air inlet pipe 11.

[0028] The condenser 4 cools the air discharged from the color group oven 1 to convert gaseous alcohol into liquid alcohol, which is then transported to the storage tank 5 for storage.

[0029] In this design, the hot air supply mechanism 2 provides hot air to the color group oven 1. The hot air enters the color group oven 1 through the air inlet pipe 11. At the same time, the color group oven 1 heats the incoming hot air and discharges the air. Under the action of the induced draft mechanism 7, the discharged air enters the heat exchange pipe 3 through the air outlet pipe 12. Since the air inlet pipe 11 is located inside the heat exchange pipe 3, the heat of the discharged air is transferred to the air inlet pipe 11, and then to the hot air in the air inlet pipe 11. After heat exchange in the heat exchange pipe 3, the air enters the condenser pipe 4 for cooling, so that the gaseous alcohol is converted into liquid alcohol and then transported to the storage tank 5 for storage. In this way, the discharged air can be cooled, reducing the difficulty of subsequent liquid alcohol recovery, and the calorific value can be transferred to the hot air in the air inlet pipe 11, making full use of waste heat.

[0030] The color group oven 1 has been disclosed in Chinese patent CN203713239U, so the structure of the color group oven 1 will not be described in detail in this embodiment.

[0031] Preferably, the air inlet pipe 11 includes an air inlet section 111, a bending section 112 and a connecting section 113 connected in sequence. The air inlet section 111 is connected to the air inlet of the color group oven 1, the bending section 112 is located inside the heat exchange pipe 3, and the connecting section 113 is connected to the output end of the hot air conveying mechanism 2.

[0032] The bent section 112 accounts for 70% to 80% of the length of the air inlet duct 11.

[0033] Specifically, hot air is generated by the hot air conveying mechanism 2. The hot air enters the color group oven 1 after passing through the connecting section 113, the bending section 112 and the air inlet section 111 in sequence. The bending section 112 is located inside the heat exchange tube 3, which can prolong the flow time of the hot air in the heat exchange tube 3, so that the hot air can have sufficient time to exchange heat in the heat exchange tube 3 and ensure the full transfer of heat value.

[0034] More preferably, the hot air conveying mechanism 2 is a dehumidifier. The dehumidifier generates hot air and also reduces the moisture content in the hot air.

[0035] In this embodiment, the air inlet duct 11 is made of stainless steel. Stainless steel air inlet duct 11 has high thermal conductivity, so the high-calorific-value air discharged from the color group oven 1 can better transfer its heat value to the hot air in the air inlet duct 11.

[0036] In practical applications, heat exchange tube 3 is made of PP material. PP material provides good insulation, reducing heat loss during the heat exchange process.

[0037] Preferably, the condenser tube 4 is provided with multiple condenser filters 41. The condenser filters 41 can be made of wire mesh. Under the action of the induced draft mechanism 7, the air with a high calorific value discharged from the color group oven 1 comes into contact with the wire mesh. Due to the low temperature of the condenser filters 41, the air liquefies upon contact with the wire mesh, thereby converting the gaseous alcohol into liquid alcohol, which is then stored in the storage tank 5.

[0038] More preferably, it also includes a cooling water tank 6, with one end of the condenser pipe 4 located in the cooling water tank 6. By placing one end of the condenser pipe 4 in the cooling water tank 6, the air can be further cooled.

[0039] Implicitly, the condenser tube 4 can be made of stainless steel, and the cooling water tank 6 can better cool the exhaust air.

[0040] Preferably, the air intake mechanism 7 is an exhaust fan. The exhaust fan is used to guide the air discharged from the color group oven 1.

[0041] In this embodiment, there are multiple color group ovens 1. Multiple color group ovens 1 are set up, and the air outlet pipe 12 of each color group oven 1 is connected to the heat exchange pipe 3. The air inlet pipe 11 of each color group oven 1 is located inside the heat exchange pipe 3. In this way, the hot air in the air inlet pipe 11 of multiple color group ovens 1 can be exchanged simultaneously.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements or modifications can be made without departing from the principle of the present utility model, and these improvements or modifications should also be considered within the protection scope of the present utility model.

Claims

1. A recycling system of a multi-color intaglio printing press, comprising a color group oven and a storage tank, the color group oven being provided with an air inlet pipe and an air outlet pipe, the air inlet pipe being provided with a hot air conveying mechanism, characterized in that, Further comprising a heat exchange pipe and a condensing pipe, the heat exchange pipe having a closed end and an open end connected with the condensing pipe, the air outlet pipe being in communication with the heat exchange pipe, and the condensing pipe being provided with an air guiding mechanism; The air inlet pipe is located in the heat exchange pipe, and the heat exchange pipe is used to transfer the heat value of the air discharged from the color group oven to the air inlet pipe; The condensing pipe is used to cool the air discharged from the color group oven, so as to convert the gaseous alcohol into liquid alcohol and deliver it to the storage tank for storage; Further comprising a cooling pool, one end of the condensing pipe being located in the cooling pool.

2. A recovery system for a multi-color intaglio printing press according to claim 1, characterized in that, The air inlet pipe comprises an air inlet section, a bending section and a connecting section connected in sequence, the air inlet section being connected with the air inlet of the color group oven, the bending section being located in the heat exchange pipe, and the connecting section being connected with the output end of the hot air conveying mechanism.

3. A multi-color gravure printing machine's recycling system according to claim 2, characterized in that, The bending section accounts for 70% to 80% of the length of the air inlet pipe.

4. A recovery system for a multi-color intaglio printing press according to claim 1, wherein The hot air conveying mechanism is a dehumidifier.

5. A recovery system for a multi-color intaglio printing press according to claim 1, wherein The material of the air inlet pipe is stainless steel.

6. A recovery system for a multi-color intaglio printing press according to claim 1, wherein The material of the heat exchange pipe is PP material.

7. A recovery system for a multi-color intaglio printing press according to claim 1, wherein The condensing pipe is provided with a plurality of condensing filter screens.

8. A recovery system for a multi-color intaglio printing press according to claim 1, wherein The air guiding mechanism is an air blower.

9. A recovery system for a multi-color intaglio printing press according to claim 1, wherein The number of the color group ovens is multiple.

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