A water circuit switching structure for temperature control of printing rollers under different operating conditions

Abstract

This utility model discloses a water path switching structure for temperature control of printing rollers under different operating conditions. It includes a temperature circulation control water tank with an inlet and a return inlet, and two sets of the temperature circulation control water tank are provided. It also includes a first control valve and a second control valve. The first control valve is connected between the two inlet nozzles and the water inlet of the printing roller, and is used to control the connection or disconnection of one of the inlet nozzles with the water inlet of the printing roller. This utility model, through the coordinated design of two sets of temperature circulation control water tanks and the first and second control valves, achieves precise switching of the water inlet / return path of the printing roller, meeting the requirements of extreme temperature differences under different operating conditions. The independent water supply from the dual water tanks avoids the decrease in system stability caused by frequent adjustments of a single water path, reduces temperature fluctuations, and improves registration accuracy and ink layer uniformity.

Description

Technical Field

[0001] This utility model relates to the technical field of machining, and in particular to a water circuit switching structure for temperature control of printing rollers under different working conditions. Background Technology

[0002] In the field of general machining, printing rollers are key components, and the stability of their surface temperature directly affects printing quality.

[0003] Traditional printing roller temperature control often uses a single water circuit system, which adjusts the water temperature or flow rate through a single temperature circulation control water tank to adapt to changes in working conditions. However, this limits the temperature adjustment range of a single water circuit, making it difficult to quickly respond to extreme temperature differences under different working conditions. At the same time, frequent water temperature adjustments can easily lead to a decrease in system stability, which not only increases energy consumption but may also cause quality problems such as misregistration and uneven ink layer due to temperature fluctuations. Utility Model Content

[0004] In view of the above-mentioned problems of existing water circuit systems, this paper aims to provide a water circuit switching structure for controlling the temperature of printing rollers under different operating conditions.

[0005] The specific technical solution is as follows: A water circuit switching structure for temperature control of printing rollers under different working conditions includes a temperature circulation control water tank, which has an inlet and a return nozzle, and the temperature circulation control water tank is provided in two sets. Also includes: A first control valve is connected between the two water inlets and the water inlet of the printing roller, and is used to control the connection or disconnection between one of the water inlets and the water inlet of the printing roller. The second control valve is connected between the two return water nozzles and the outlet of the printing roller, and is used to control the connection or disconnection between one of the return water nozzles and the outlet of the printing roller. When the first control valve controls the water inlet of one of the temperature circulation control water tanks to connect with the water inlet of the printing roller, the second control valve controls the return water inlet of the temperature circulation control water tank to connect with the water outlet of the printing roller. When the first control valve disconnects the inlet of one of the temperature circulation control water tanks from the inlet of the printing roller, the second control valve disconnects the return nozzle of the temperature circulation control water tank from the outlet of the printing roller.

[0006] As a further improvement and optimization of this solution, each of the water inlets is connected to the first control valve through a first water outlet pipe.

[0007] As a further improvement and optimization of this solution, each of the return water nozzles is connected to the second control valve through a return water pipeline.

[0008] As a further improvement and optimization of this solution, the first control valve is connected to the water inlet of the printing roller via a water inlet pipe.

[0009] As a further improvement and optimization of this solution, the second control valve is connected to the water outlet of the printing roller via a second water outlet pipe.

[0010] As a further improvement and optimization of this solution, both the first control valve and the second control valve are solenoid valves.

[0011] As a further improvement and optimization of this solution, the solenoid valve is a two-position three-way solenoid valve.

[0012] As a further improvement and optimization of this solution, each of the first water outlet pipes is equipped with a filter to filter impurities in the water flowing through the first water outlet pipe.

[0013] The positive effects of the above technical solution compared with the existing technology are: This invention utilizes the coordinated design of two sets of temperature-controlled water tanks and the first and second control valves to achieve precise switching of the water inlet / outlet paths for the printing rollers, meeting the extreme temperature difference requirements under different working conditions. The independent water supply from the dual water tanks avoids the decrease in system stability caused by frequent adjustments to a single water path, reduces temperature fluctuations, and improves registration accuracy and ink layer uniformity, fundamentally solving the technical problems of limited temperature adjustment range, high energy consumption, and unstable quality associated with traditional single water paths. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a water circuit switching structure for temperature control of printing rollers under different working conditions according to this utility model. In the attached diagram: 1. Temperature circulation control water tank; 2. Printing roller; 3. First control valve; 4. Filter; 5. First water outlet pipe; 6. Water inlet pipe; 7. Second water outlet pipe; 8. Return water pipe; 9. Second control valve. Detailed Implementation

[0015] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0017] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0018] Figure 1 This is a schematic diagram of a water circuit switching structure for temperature control of printing rollers under different operating conditions, as described in this utility model. Figure 1 The diagram illustrates a preferred embodiment of a water circuit switching structure for temperature control of the printing roller 2 under different operating conditions. It includes a temperature circulation control water tank 1, which has inlet nozzles (not shown) and return nozzles (not shown). Two sets of inlet nozzles are provided in the temperature circulation control water tank 1. The structure also includes a first control valve 3 and a second control valve 9. The first control valve 3 is connected between the two inlet nozzles and the inlet of the printing roller 2, controlling whether one of the inlet nozzles is connected to or disconnected from the inlet of the printing roller 2. The second control valve 9 is connected between the two return nozzles and the printing roller 2. Between the water outlets of the roller 2, a control valve is used to connect or disconnect one of the return water nozzles from the water outlet of the printing roller 2; when the first control valve 3 controls the water inlet of one of the temperature circulation control water tanks 1 to connect with the water inlet of the printing roller 2, the second control valve 9 controls the return water nozzle of the temperature circulation control water tank to connect with the water outlet of the printing roller 2; when the first control valve 3 controls the water inlet of one of the temperature circulation control water tanks 1 to disconnect from the water inlet of the printing roller 2, the second control valve 9 controls the return water nozzle of the temperature circulation control water tank to disconnect from the water outlet of the printing roller 2.

[0019] This application achieves precise switching of the water inlet / outlet path of the printing roller 2 through the coordinated design of two sets of temperature-controlled water tanks 1 and the first and second control valves 9, meeting the extreme temperature difference requirements under different working conditions. The independent water supply of the dual water tanks can avoid the decrease in system stability caused by frequent adjustment of a single water path, reduce temperature fluctuations, improve the registration accuracy and ink layer uniformity, and fundamentally solve the technical problems of limited temperature adjustment range, high energy consumption and unstable quality of traditional single water path.

[0020] Specifically, the specific structure and working principle of the temperature circulation control water tank 1 are existing mature technologies, and this application will not elaborate on its specific structure and principle.

[0021] Furthermore, as a preferred embodiment, each water inlet is connected to the first control valve 3 via a first water outlet pipe 5.

[0022] Furthermore, as a preferred embodiment, each return water nozzle is connected to the second control valve 9 via a return water pipe 8.

[0023] Even better, each return water pipe 8 is equipped with a water pump to ensure the circulation of water in the pipe.

[0024] Furthermore, as a preferred embodiment, the first control valve 3 is connected to the water inlet of the printing roller 2 via a water inlet pipe 6.

[0025] Furthermore, as a preferred embodiment, the second control valve 9 is connected to the water outlet of the printing roller 2 via a second water outlet pipe 7.

[0026] Furthermore, in a preferred embodiment, both the first control valve 3 and the second control valve 9 are solenoid valves. Using solenoid valves as control valves achieves automated and precise control of the water circuit switching. Electromagnetic drives offer fast response times, enabling millisecond-level switching, adapting to the rapidly changing conditions required during printing, reducing human intervention errors, improving system reliability, and lowering the workload of operators.

[0027] Furthermore, as a preferred embodiment, the solenoid valve is a two-position three-way solenoid valve. Using a two-position three-way solenoid valve as the control valve, its three-channel design perfectly matches the switching requirements of dual water tanks, achieving precise control of the "inlet-out-off" three states. The two-position structure is simple and reliable, with a low failure rate, suitable for the high-intensity continuous operation scenarios in the printing industry, improving equipment lifespan and maintenance convenience, and reducing total lifespan costs.

[0028] Furthermore, as a preferred embodiment, each first water outlet pipe 5 is equipped with a filter 4 to filter impurities in the water flowing through the first water outlet pipe 5. Installing the filter 4 in the first water outlet pipe 5 effectively intercepts impurities in the water (such as particulate matter, iron filings, ink residue, etc.), preventing impurities from entering the solenoid valve or the surface of the printing roller 2, thus avoiding problems such as valve core blockage, roller scaling, and temperature sensor misreading. The improved water cleanliness after filtration ensures stable heat exchange efficiency, reduces the decrease in heat transfer efficiency caused by impurity deposition, improves temperature control accuracy and system stability, extends the service life of key equipment components, and reduces maintenance frequency and costs.

[0029] Preferably, filter 4 can be a Y-type filter 4.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A water circuit switching structure for temperature control of printing rollers under different operating conditions, comprising a temperature circulation control water tank, wherein the temperature circulation control water tank has an inlet nozzle and a return nozzle, characterized in that, Two sets of temperature circulation control water tanks are provided; Also includes: A first control valve is connected between the two water inlets and the water inlet of the printing roller, and is used to control the connection or disconnection between one of the water inlets and the water inlet of the printing roller. The second control valve is connected between the two return water nozzles and the outlet of the printing roller, and is used to control the connection or disconnection between one of the return water nozzles and the outlet of the printing roller. When the first control valve controls the water inlet of one of the temperature circulation control water tanks to connect with the water inlet of the printing roller, the second control valve controls the return water inlet of the temperature circulation control water tank to connect with the water outlet of the printing roller. When the first control valve disconnects the inlet of one of the temperature circulation control water tanks from the inlet of the printing roller, the second control valve disconnects the return nozzle of the temperature circulation control water tank from the outlet of the printing roller.

2. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to claim 1, characterized in that, Each of the aforementioned water inlets is connected to the first control valve via a first water outlet pipe.

3. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to claim 1, characterized in that, Each of the aforementioned return water nozzles is connected to the second control valve via a return water pipe.

4. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to claim 1, characterized in that, The first control valve is connected to the water inlet of the printing roller via a water inlet pipe.

5. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to claim 1, characterized in that, The second control valve is connected to the water outlet of the printing roller via a second water outlet pipe.

6. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to any one of claims 1-5, characterized in that, Both the first control valve and the second control valve are solenoid valves.

7. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to claim 6, characterized in that, The solenoid valve is a two-position three-way solenoid valve.

8. The water circuit switching structure for temperature control of printing rollers under different operating conditions according to claim 2, characterized in that, Each of the first water outlet pipes is equipped with a filter to filter impurities in the water flowing through the first water outlet pipe.

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