Liquid supply device for a printing press

Abstract

The utility model discloses a liquid supply device for printing machine, including water treatment assembly and install the purification assembly of one side of treatment assembly, water treatment assembly includes water supply tank, the top of water supply tank is equipped with water supply assembly, and the top of proportioning tank is equipped with liquid preparation assembly, be equipped with the baffle in water supply tank, and the inside of water supply tank is divided into backwater chamber and water supply chamber through baffle, water supply assembly includes support plate, and still be equipped with backwater pipe on support plate, and backwater pipe guides water flow to enter into backwater chamber, purification assembly includes water pump and purification jar, water pump pumps the water source in backwater chamber to purification jar, and through the water pipe that is equipped with on purification jar, introduces the water source after purification to water supply chamber, first pump body is on support plate, and through first pump body, the water source in water supply chamber is pumped to the water inlet of printing machine, provides the printing machine with the proportioning liquid of unceasingly, promotes the print quality of printing machine.

Description

Technical Field

[0001] This utility model relates to the field of printing equipment technology, specifically to a liquid supply device for a printing press. Background Technology

[0002] Printing presses use a mixture of alcohol, dampening solution, and purified water, primarily to reduce the surface tension of water, accelerate water film spreading, control temperature, and improve ink transfer efficiency. Here are the specific reasons: Alcohol (mainly isopropanol) significantly reduces the surface tension of water, making it easier to spread on the printing plate surface and form a uniform water film. This helps the ink adhere precisely to non-image areas of the printing plate, ensuring print quality. Alcohol, as a small molecule compound, diffuses quickly, wetting the printing plate surface faster, reducing dry-plate phenomena and improving ink-water balance. For example, in high-end brochure printing, an appropriate alcohol concentration ensures clear dots and natural color transitions. When alcohol evaporates, it absorbs heat, lowering the temperature of the printing plate and rollers, preventing equipment malfunctions or abnormal ink emulsification caused by high temperatures. For example, offset printing press water tanks are often equipped with cooling systems to maintain a stable alcohol concentration. When the alcohol concentration is stable, the dampening solution adheres more evenly to the printing plate surface, reducing ink transfer resistance, accelerating ink drying, and reducing the risk of foaming and mold growth. Therefore, water treatment equipment is needed to centrally treat alcohol, dampening solution, and purified water to ensure the normal operation of the printing press. Utility Model Content

[0003] The purpose of this invention is to provide a liquid supply device for a printing press to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a liquid supply device for a printing press, comprising a liquid supply assembly, wherein the liquid supply assembly includes a clean water tank, an alcohol tank, and a dampening liquid tank, and the liquids in the clean water tank, the alcohol tank, and the dampening liquid tank are all transported to the equipment box by a provided delivery pump.

[0005] As a preferred technical solution of this utility model: the liquid supply assembly further includes a water inlet purification assembly, the water inlet purification assembly includes a first filter, one side of the first filter is connected to an external water source through a water inlet pipe, and the outlet of the first filter is connected to a water supply pump, and the water source is pumped into the purified water tank by the water supply pump.

[0006] As a preferred technical solution of this utility model, it also includes a second filter; one end of the second filter is connected to the water supply pump through a pipe, and the second filter introduces water into the water purification tank through a water delivery pipe.

[0007] As a preferred technical solution of this utility model: the first filter and the second filter are cylindrical structures and RO reverse osmosis membranes are placed inside them.

[0008] The beneficial effects of this utility model by adopting the above technical solution are as follows: by setting up a liquid supply assembly, different liquids, such as purified water, dampening solution and alcohol, can be simultaneously input into the mixing tank, thereby realizing the continuous supply of purified water, dampening solution and alcohol. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the main structure of this utility model; Figure 2 A schematic diagram of the main structure of this utility model after the box body is concealed; Figure 3 This is a schematic diagram of one side of the water treatment assembly of this utility model; Figure 4 This is a schematic diagram of the other side of the water treatment assembly of this utility model; Figure 5 This is a schematic diagram of the main structure of the water supply tank and the proportioning tank of this utility model; Figure 6 for Figure 5 A magnified view of a portion of point A in the middle; Figure 7 This is a cross-sectional structural diagram of the water supply tank and the proportioning tank. Figure 8 This is a schematic diagram of one side of the water supply assembly of this utility model; Figure 9 This is a schematic diagram of the other side of the water supply assembly of this utility model; Figure 10 This is a schematic diagram of the main structure of the proportioning assembly of this utility model; Figure 11 This is a schematic diagram of the main structure of the purification assembly of this utility model; Figure 12 This is a schematic diagram of the main structure of the liquid supply assembly of this utility model; Figure 13 This is a schematic diagram of the main structure of the water inlet purification assembly of this utility model.

[0010] In the diagram: 1. Water treatment assembly; 10. Water supply tank; 11. Proportioning tank; 12. Water supply assembly; 13. Liquid preparation assembly; 14. Baffle plate; 15. Water supply chamber; 16. Water return chamber; 17. Solenoid valve; 18. DC water pump; 19. Connecting pipe; 110. Alcohol proportioner; 111. Water return pipe; 112. Liquid return pipe; 113. Liquid replenishment pipe; 114. First pump body; 115. Second pump body; 116. Purified water connection hole; 117. Support plate; 118. 1. Proportional solution connection hole; 119. Cover plate; 120. Liquid inlet pipe; 121. Stirring pump; 2. Purification assembly; 20. Water pump; 21. Water pipe; 22. Purification tank; 3. Liquid supply assembly; 30. Clean water tank; 31. Alcohol tank; 32. Dampening solution tank; 33. Water inlet purification assembly; 34. Transfer pump; 35. Water supply pump; 36. First filter; 37. Second filter; 38. Water delivery pipe; 4. Chiller; 5. Wastewater tank; 6. Electrical box; 7. Box body. Detailed Implementation

[0011] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0012] Please see Figure 1-13 This utility model provides an embodiment of a liquid supply device for a printing press, comprising a water treatment assembly 1, a purification assembly 2 on one side of the water treatment assembly 1, and a liquid supply assembly 3 on the other side of the water treatment assembly 1. Therefore, the liquid supply assembly 3 can provide the water treatment assembly 1 with fresh alcohol, incoming water, and dampening solution, while the purification assembly 2 purifies wastewater and supplies the purified water back to the water treatment assembly 1. This ensures a continuous water supply while improving wastewater utilization. In particular, by simultaneously inputting different liquids, such as purified water, dampening solution, and alcohol, into the water treatment assembly 1 using the liquid supply assembly 3, a continuous supply of purified water, dampening solution, and alcohol can be achieved.

[0013] Specifically, the water treatment assembly 1 includes a water supply tank 10; a water supply assembly 12 is installed on the top of the water supply tank 10, and a liquid mixing assembly 13 is provided on the top of the mixing tank 11; a partition 14 is provided inside the water supply tank 10, dividing the interior of the water supply tank 10 into a return water chamber 16 and a water supply chamber 15; the water supply assembly 12 includes a support plate 117, and a return water pipe 111 is also provided on the support plate 117, and the return water pipe 111 guides water flow into the return water chamber 16; a first pump body 114 is provided on the support plate 117, and ... The first pump body 114 pumps the water source in the water supply chamber 15 to the water tank of the printing press; the purification assembly 2 includes a water pump 20 and a purification tank 22. The water pump 20 pumps the water source in the return water chamber 16 to the purification tank 22, and introduces the purified water source into the water supply chamber 15 through the water pipe 21 provided on the purification tank 22; the liquid supply assembly 3 includes a clean water tank 30, an alcohol tank 31 and a dampening liquid tank 32, and the liquids in the clean water tank 30, the alcohol tank 31 and the dampening liquid tank 32 are all transported to the equipment box 11 by a provided transfer pump 34.

[0014] In summary, the wastewater from the printing press enters the return water chamber 16. At this time, the water pump 20 pumps the liquid from the return water chamber 16 to the purification tank 22. After passing through the purification tank 22, the wastewater is guided by the water pipe 21 to the supply water chamber 15, thus completing the collection and purification of the wastewater. When the water source enters the supply water chamber 15, the first pump body 114 delivers the purified water to the printing press, providing a continuous supply of mixed liquid to ensure the continuous and reliable operation of the printing press and support the printing quality. Because the water treatment equipment is located outside the printing press, it not only facilitates the maintenance of the water treatment equipment but also provides a continuous supply of mixed liquid for the printing press. Furthermore, the external location of the water treatment equipment facilitates maintenance, unified management, and reduces the overall energy consumption of the factory's water tanks. It provides a continuous and stable supply of mixed liquid for the printing press.

[0015] Furthermore, since the water treatment assembly 1 also includes a mixing tank 11, and the mixing tank 11 is located on one side of the water supply tank 10, the mixing tank 11 is also provided with a liquid mixing assembly 13, and the mixed liquid is introduced into the water supply chamber 15 through the liquid mixing assembly 13. Therefore, the mixing tank 11 provides the water supply tank 10 with a pre-made liquid mixing solution.

[0016] Specifically, the liquid preparation assembly 13 includes a cover plate 119, and the cover plate 119 is provided with several identical liquid inlet pipes 120. At least three different liquids are introduced into the mixing tank 11 through these multiple liquid inlet pipes 120. A stirring pump 121 on the cover plate 119 then pumps the liquids from the mixing tank 11 into the water supply chamber 15. Because multiple liquid inlet pipes 120 are provided, for example, three inlet pipes 120, one can be used to introduce water, another to introduce alcohol, and the last to introduce dampening solution. This allows the required liquids to be introduced into the mixing tank 11 simultaneously, and then the stirring pump 121 mixes the liquids before delivering them to the water supply chamber 15. The outlet of the stirring pump 121 is connected to a pipe, and the other end of the pipe passes through the liquid preparation connection hole 118 on the support plate 117 and enters the water supply chamber 15. Thus, water, alcohol, and dampening solution are mixed during delivery, ensuring thorough mixing of the liquids.

[0017] Because the wastewater from the printing press has a high temperature, to prevent the liquid in the water supply chamber 15 from continuously heating up, a second pump body 115 is also provided on the support plate 117, and a return pipe 112 is also provided on the support plate 117. The second pump body 115 pumps the liquid in the water supply chamber 15 into the cooler 4, and then connects the cooler 4 to the return pipe 112 to introduce the cooled liquid back into the water supply chamber 15. Therefore, the second pump body 115 can be used to pump the liquid inside the water supply chamber 15 to the cooler 4, where it is cooled before flowing back into the water supply chamber 15. The cooler is a readily available technology that can be purchased directly from the market, such as a UII-type air heat exchanger, single or double metal finned heat exchange tubes, etc. Furthermore, to reduce equipment production costs, the cooler 4 can also be a box structure.

[0018] Since the concentration of alcohol may decrease after the purified mixture flows into the water supply chamber 15, this is necessary to ensure that the alcohol content in the prepared solution reaches the concentration required for use.

[0019] The support plate 117 is also equipped with an alcohol mixer 110, and the bottom of the water tank 10 is equipped with a DC water pump 18. The DC water pump 18 pumps the liquid in the water supply chamber 15 into the alcohol mixer 110 through the connecting pipe 19. Thus, the DC water pump 18 draws the mixture from the bottom of the water supply chamber 15 into the alcohol mixer 110, which then detects the alcohol concentration, allowing the user to add alcohol in real time based on the detected value. The alcohol mixer 110 is commercially available, preferably an alcosmart AZR alcohol mixer. To enable automatic alcohol replenishment, the support plate 117 is also equipped with a replenishment pipe 113, through which alcohol is guided into the water supply chamber 15. A solenoid valve 17 on the replenishment pipe 113 either prevents or guides alcohol into the water supply chamber 15. Therefore, when the replenishment pipe 113 is connected to a pump inside the alcohol storage container via a pipe, the pump can be used to pump alcohol into the water supply chamber 15. Alternatively, the alcohol storage container can be installed directly above the water supply tank 10. When the alcohol concentration inside the water supply chamber 15 decreases, the alcohol will automatically flow into the water supply chamber 115 under the action of gravity by opening the solenoid valve 17 until the alcohol ratio analyzer 110 detects that the alcohol concentration has reached the preset value, and then the solenoid valve 17 will close.

[0020] Furthermore, since there are at least three purification tanks 22, and the interior of each of the three purification tanks 22 is filled with activated carbon or filter cotton, the wastewater can be filtered multiple times, reducing the amount of impurities or small particles entering the water supply chamber 15. In addition, the arrangement of the three purification tanks 22 also allows the wastewater to release heat during the purification process, thus helping to prevent the continuous rise in the temperature of the mixed liquid inside the water supply chamber 15.

[0021] To ensure water quality, the liquid supply assembly 3 also includes a water inlet purification assembly 33, comprising a first filter 36 and a second filter 37. One side of the first filter 36 is connected to an external water source via an inlet pipe 39, and its outlet is connected to a water supply pump 35. The water supply pump 35 is connected to the second filter 37 via a pipe, and the second filter 37 introduces water into the purified water tank 30 via a water delivery pipe 38. Therefore, two filters can be used to purify the water entering the purified water tank 30, reducing the impact of impurities in the water on the printed materials. Both the first filter 36 and the second filter 37 are cylindrical structures and contain an RO reverse osmosis membrane.

[0022] To facilitate wastewater collection, a wastewater tank 5 is provided. The wastewater tank 5 receives wastewater from the printing press and pumps it into the return water chamber 16 via an internal pump. Based on this, wastewater from the printing press flows into the wastewater tank 5 through a pipe, and then is pumped into the return water chamber 16 by the pump inside the wastewater tank 5. At this point, the purification assembly 2 purifies the wastewater and then delivers it to the supply water chamber 15, completing the wastewater recycling process.

[0023] Furthermore, since the water treatment assembly 1, purification assembly 2, and liquid supply assembly 3 are all equipped with enclosures 7, these enclosures can protect the equipment and prevent dust and other impurities from contacting the mixed liquid. In particular, the enclosures also contribute to a cleaner and more aesthetically pleasing appearance and facilitate overall transport. Additionally, an electrical box 6 is located on one side of each enclosure 7, allowing the electrical components controlling the equipment to be integrated within it for easier maintenance.

[0024] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A liquid supply device for a printing press, comprising a liquid supply assembly (3), characterized in that: The liquid supply assembly (3) includes a clean water tank (30), an alcohol tank (31) and a dampening liquid tank (32), and the liquids in the clean water tank (30), the alcohol tank (31) and the dampening liquid tank (32) are all transported to the equipment box (11) by a provided delivery pump (34).

2. The liquid supply device for a printing press according to claim 1, characterized in that: The liquid supply assembly (3) further includes a water inlet purification assembly (33), which includes a first filter (36). One side of the first filter (36) is connected to an external water source through a water inlet pipe (39), and the outlet of the first filter (36) is connected to a water supply pump (35), which pumps the water source into the purified water tank (30).

3. A liquid supply device for a printing press according to claim 2, characterized in that: It also includes a second filter (37); one end of the second filter (37) is connected to the water supply pump (35) through a pipe, and the second filter (37) introduces water into the water tank (30) through a water supply pipe (38).

4. A liquid supply device for a printing press according to claim 3, characterized in that: The first filter (36) and the second filter (37) are cylindrical structures and contain RO reverse osmosis membranes inside.

Images