Printing roller cooling device for printing equipment

Abstract

The utility model discloses a printing roller cooling device for printing equipment, which comprises a printing roller and a circulating mechanism, and two ends of the printing roller are communicated with the circulating mechanism. The printing roller is hollow, the heat conduction ring and the water pipe are installed in the printing roller, the wetting mechanism is arranged on the water pipe, the wetting mechanism wets the inner wall of the printing roller and cooling fins on the heat conduction ring, water on the wetting mechanism sublimates to take away heat on the printing roller, and compared with conventional water circulation cooling, the heat dissipation efficiency is higher, and the requirement for water resources is reduced; efficient and uniform cooling of the printing roller is achieved; and meanwhile, the flowing path of cooling water is reduced in the working process of the device, so that the water tightness requirement is lowered, the risk of cooling water leakage is reduced, and the stability and safety of equipment are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a printing roller cooling device for printing equipment. Background Art

[0002] In the printing industry, the printing roller is a key component, and its temperature control during operation is crucial to ensure printing quality and efficiency. Traditional printing roller cooling devices mostly cool the printing roller by circulating cooling water. However, the existing water circulation cooling system is often lacking in efficient water resource recovery and reuse mechanisms in design, resulting in a large amount of cooling water required during the cooling process, which not only increases production costs, but also does not conform to the current development trend of energy conservation and environmental protection; and, since the printing roller needs to rotate at high speed during operation and is often exposed to various inks and solvents, the water tightness requirements for the cooling accessories are extremely high. Once there is a problem with the water tightness, it will not only affect the cooling effect, but may also cause equipment failure and even cause safety accidents.

[0003] Therefore it is necessary to propose a novel printing roller cooling device to make up for the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to overcome the above technical deficiencies, to provide a printing roller cooling device for printing equipment, and to solve the problems raised in the background technology.

[0005] In order to achieve the above technical objectives, the technical solution of the utility model provides a printing roller cooling device for printing equipment, including: a printing roller and a circulation mechanism, the circulation mechanism includes a condenser, the inlet of the condenser is connected to the air outlet of the compressor, and the outlet is connected to the water inlet of the water tank, the water outlet of the water tank is connected to the water inlet of the water pump, the printing roller is hollow and one end of it is provided with an air inlet hole and a rotating joint connected to the water outlet of the water pump, and the other end is connected to the air inlet of the compressor, a water pipe and a plurality of heat-conducting rings are arranged inside the printing roller, and a plurality of heat-conducting fins are arranged in a circular array on the inner ring surface of the heat-conducting ring, the water pipe is connected to the rotating joint, and a plurality of wetting mechanisms connected thereto are arranged on it, and the wetting mechanism is used to wet the heat-conducting fins and the inner wall of the printing roller.

[0006] Furthermore, the wetting mechanism includes a bracket, a guide pipe connected to the water pipe is arranged in the bracket, a roller brush is arranged at the lower end of the bracket, brush heads are arranged on the brackets on both sides of the roller brush, an immersion brush is arranged on the brush head, and a water channel connecting the immersion brush and the guide pipe is arranged in the brush head.

[0007] Furthermore, the plurality of wetting mechanisms are arranged in an equidistant spiral array with the water pipe as the center.

[0008] Furthermore, the heat sinks are evenly and obliquely arranged on the inner surface of the heat-conducting ring, and one end of the air inlet hole in the printing roller faces the gap between the two heat sinks.

[0009] Furthermore, the wetting brush is a sponge, and a detachable filter is provided on the air inlet.

[0010] Compared with the prior art, the beneficial effects of the utility model include:

[0011] The utility model uses a wetting mechanism, a printing roller with a hollow structure and a heat-conducting ring arranged therein, and the wetting mechanism wets the inner wall of the printing roller and the heat sink on the heat-conducting ring, and the water thereon sublimates to take away the heat on the printing roller. Compared with conventional water circulation cooling, not only the heat dissipation efficiency is higher, but also the demand for water resources is reduced, thereby achieving efficient and uniform cooling of the printing roller; at the same time, the device reduces the flow path of cooling water during operation, thereby reducing the water tightness requirement, reducing the risk of cooling water leakage, and improving the stability and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of a printing roller cooling device for printing equipment provided by the utility model;

[0013] Figure 2 It is a schematic diagram of a printing roller of a printing roller cooling device for printing equipment provided by the utility model;

[0014] Figure 3 This is a schematic diagram of a water pipe of a printing roller cooling device for printing equipment provided by the utility model;

[0015] Figure 4 The utility model is a schematic diagram of a wetting mechanism of a printing roller cooling device for printing equipment.

[0016] In the figure: printing roller 1, air inlet 101, heat conductive ring 102, heat sink 103, water pipe 104, rotary joint 2, condenser 3, water tank 4, water pump 5, compressor 6, wetting mechanism 7, bracket 701, guide tube 702, roller brush 703, brush head 704, and wetting brush 705. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0018] Reference Figure 1-3The utility model provides a printing roller cooling device for printing equipment, comprising a printing roller 1 and a circulation mechanism. The core component of the circulation mechanism is a condenser 3, whose inlet is connected to the air outlet of the compressor 6, and whose outlet is connected to the water inlet of the water tank 4, and the water outlet of the water tank 4 is connected to the water inlet of the water pump 5. The printing roller 1 is a hollow structure, one end of which is equipped with an air inlet 101 and a rotary joint 2 connected to the water outlet of the water pump 5, and the other end is connected to the air inlet of the compressor 6. A detachable filter is installed in the air inlet 101 to reduce dust in the air from entering the printing roller 1.

[0019] A water pipe 104 and several heat-conducting rings 102 are arranged inside the printing roller 1. The inner ring surfaces of these heat-conducting rings 102 are provided with several heat sinks 103 in a circumferential array, and their main function is to enhance the heat exchange effect. The water pipe 104 is connected to the rotary joint 2, and several wetting mechanisms 7 connected thereto are arranged thereon. The key function of these wetting mechanisms 7 is to keep the heat sink 103 and the inner wall of the printing roller 1 moist. The wetting mechanisms 7 are arranged in an equidistant spiral array with the water pipe 104 as the center. While providing support for the water-retaining pipe 104 to keep it coaxial with the printing roller 1, different wetting mechanisms 7 wet the heat sink 103 and the inner wall of the printing roller 1 at different parts as the printing roller 1 rotates, thereby ensuring uniform cooling; when air flows in the printing roller 1, the water on the heat sink 103 and the inner wall of the printing roller 1 evaporates and takes away the heat of the printing roller 1 with the air. Compared with the existing water circulation cooling system that only takes away the heat through heat exchange, the water sublimation process can take away more heat, thereby further improving the cooling effect.

[0020] The heat sink 103 is evenly distributed and tilted on the inner surface of the heat conducting ring 102. This arrangement effectively increases the area of ​​the heat sink 103 and also forms a spiral air duct. The air inlet 101 is located in the printing roller 1 and faces the gap between the two heat sinks 103. After the air enters the printing roller 1, it flows along the inner wall instead of passing directly through the middle. This design helps the air to better contact the heat sink 103 and the wet inner wall, thereby improving the cooling effect.

[0021] Reference Figure 4The wetting mechanism 7 includes a bracket 701, and a guide tube 702 connected to the water pipe 104 is arranged in the bracket 701. A rolling brush 703 is installed at the lower end of the bracket 701, and a brush head 704 is arranged on the bracket 701 on both sides of the rolling brush 703. The brush head 704 is equipped with an infiltration brush 705, and a sponge material is specially selected here because it has good water absorption and durability. A water channel is also arranged in the brush head 704 to connect the infiltration brush 705 and the guide tube 702, so that the cooling water can flow smoothly to the infiltration brush 705 to keep it wet, and the rolling brush 703 is contacted by the end of the guide tube 702 to keep it wet. When the printing roller 1 is working, the wetting mechanism 7 is between the two heat-conducting rings 102, the rolling brush 703 contacts the inner wall of the printing roller 1, and the two infiltration brushes 705 contact the heat sinks 103 on the two heat-conducting rings 102, so that both are wet.

[0022] In order to facilitate the understanding of the present invention, the following Figure 1 - Figure 4 The working principle of this solution is described in detail:

[0023] When the printing roller 1 is working, the water pump 5 sends the cooling water in the water tank 4 into the water pipe 104 inside the printing roller 1 through the rotary joint 2, and the cooling water then flows to the wetting brush 705 and the roller brush 703 through the guide pipe 702 of the wetting mechanism 7, and wets the heat sink 103 and the inner wall of the printing roller 1 as the printing roller 1 rotates; the compressor 6 extracts the air in the printing roller 1, and the cold air enters the inside of the printing roller 1 through the air inlet 101. The cold air flows along the inner wall of the printing roller 1, contacts the wet heat sink 103 and the inner wall of the printing roller 1, takes away the volatile water thereon and accelerates the volatilization of the water, and then the air is discharged through the other end of the printing roller 1 and is sucked into the condenser 3 by the compressor 6 for cooling. After the volatile water contained therein is condensed, it is sent to the water tank 4 for recycling again, and the excess air is discharged.

[0024] The specific implementation methods of the utility model described above do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A printing roller cooling device for printing equipment, comprising a printing roller and a circulation mechanism, wherein the circulation mechanism comprises a condenser, wherein the inlet of the condenser is connected to the air outlet of the compressor, and the outlet is connected to the water inlet of the water tank, and the water outlet of the water tank is connected to the water inlet of the water pump, wherein: The printing roller is hollow, one end of which is provided with an air inlet hole and a rotating joint connected to the water outlet end of the water pump, and the other end is connected to the air inlet end of the compressor. A water pipe and a plurality of heat-conducting rings are arranged inside the printing roller, and a plurality of heat-conducting fins are arranged in a circular array on the inner ring surface of the heat-conducting ring. The water pipe is connected to the rotating joint, and a plurality of wetting mechanisms connected thereto are arranged thereon, and the wetting mechanisms are used to wet the heat-conducting fins and the inner wall of the printing roller.

2. The printing roller cooling device for printing equipment according to claim 1, characterized in that: The wetting mechanism includes a bracket, a guide tube connected to the water pipe is arranged in the bracket, a roller brush is arranged at the lower end of the bracket, brush heads are arranged on the brackets on both sides of the roller brush, a wetting brush is arranged on the brush head, and a water channel connecting the wetting brush and the guide tube is arranged in the brush head.

3. The printing roller cooling device for printing equipment according to claim 2, characterized in that: The plurality of wetting mechanisms are arranged in an equidistant spiral array with the water pipe as the center.

4. A printing roller cooling device for printing equipment according to claim 2 or 3, characterized in that: The heat sinks are evenly distributed and tilted on the inner surface of the heat-conducting ring, and one end of the air inlet hole located in the printing roller faces the gap between the two heat sinks.

5. The printing roller cooling device for printing equipment according to claim 4, characterized in that: The wetting brush is a sponge, and a detachable filter is arranged on the air inlet.

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