Centralized liquid supply system of printing machine

Abstract

The utility model provides a centralized liquid supply system of a printing machine, which belongs to the technical field of printing and is used for solving the problem of providing fountain solution for different printing machines in a centralized water supply process. The liquid supply system comprises at least two printing machine liquid supply units, each printing machine liquid supply unit comprises a water supply branch pipe, a water return branch pipe and a pressure control assembly, one end of each water supply branch pipe communicates with a main water supply pipe, and the other end of each water supply branch pipe communicates with the water inlet end of a printing machine; one end of the water return branch pipe is communicated with the water outlet end of the printing machine, the other end of the water return branch pipe is communicated with the first main water return pipe, and the pressure control assembly controls the pressure and / or flow of fountain solution entering the printing machine. The fountain solutions entering different printing machines can be controlled through the arranged pressure control assembly, and therefore the fountain solution supply problem of all the printing machines in centralized water supply is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of printing, in particular to a centralized liquid supply system for a printing machine. Background Art

[0002] When multiple printing presses are centrally supplied with water, the corresponding printing presses may be different (the types of printing presses may be different, the models of printing presses may be different, or both), and the pressure or flow of fountain solution required by multiple printing presses may be different. Therefore, different pressures or different flows of fountain solution need to be provided to different printing presses. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a centralized liquid supply system for printing presses, which is used to solve the problem of providing fountain solution to different printing presses during the centralized water supply process.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides a centralized liquid supply system for a printing press, the liquid supply system comprising: at least two printing press liquid supply units, the printing press liquid supply units each comprising a water supply branch pipe, a return branch pipe and a pressure control component, one end of the water supply branch pipe being connected to a main water supply pipe, the other end of the water supply branch pipe being connected to a water inlet end of the printing press, one end of the return branch pipe being connected to a water outlet end of the printing press, the other end of the return branch pipe being connected to a first main return pipe, and the pressure control component controlling the pressure and / or flow of the dampening solution entering the printing press.

[0005] As an optional solution, the pressure control assembly includes a pressure regulating branch pipe and a first regulating valve;

[0006] One end of the pressure regulating branch pipe is connected to the water supply branch pipe, and the other end of the pressure regulating branch pipe is connected to the second main return pipe. The first regulating valve is arranged on the pressure regulating branch pipe.

[0007] As an optional solution, the first main water return pipe and the second main water return pipe are the same water pipe;

[0008] Or the first main water return pipe and the second main water return pipe are different water pipes.

[0009] As an optional solution, the first regulating valve is a manual valve, an electric valve, or a pneumatic valve.

[0010] As an optional solution, the pressure control assembly further includes a first one-way valve;

[0011] The first one-way valve is installed on the return branch pipe, the intersection of the pressure regulating branch pipe and the return branch pipe is the first intersection, and the first one-way valve is located between the first intersection and the water outlet of the printing press.

[0012] As an optional solution, the pressure control assembly further includes a first stop valve;

[0013] The first stop valve is installed on the water supply branch pipe.

[0014] As an optional solution, the pressure control assembly includes a second regulating valve, and the second regulating valve is arranged on the water supply branch pipe.

[0015] As an optional solution, the pressure control assembly further includes a second one-way valve;

[0016] The second one-way valve is arranged on the return water branch pipe.

[0017] As an optional solution, the pressure control assembly further includes a second stop valve;

[0018] The second stop valve is installed on the water supply branch pipe.

[0019] As an optional solution, the printer is a water fountain printer or a spray printer.

[0020] As described above, the utility model provides a centralized liquid supply system for a printing press, which has at least the following beneficial effects:

[0021] 1. The present application can control the fountain solution entering different printing machines by setting a pressure control component, thereby solving the fountain solution supply problem of each printing machine in the centralized water supply;

[0022] 2. The present application provides a pressure regulating branch pipe and a first regulating valve, thereby providing a dampening liquid with a constant pressure to the dampening liquid entering the printing press, thereby realizing the supply of dampening liquid to more types of printing presses. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a printing press liquid supply unit when the first main water return pipe and the second main water return pipe are the same water pipe in the utility model;

[0024] Figure 2 This is a structural schematic diagram of a printing press liquid supply unit in the utility model when the first main water return pipe and the second main water return pipe are different water pipes.

[0025] Figure 3 It is a structural schematic diagram of another liquid supply unit of a printing press in the utility model.

[0026] In the figure: 11, water supply branch pipe; 12, water return branch pipe; 13, main water supply pipe; 14, printing press; 15, first main water return pipe; 16, second main water return pipe;

[0027] 21. Pressure regulating branch pipe; 22. First regulating valve; 23. First pressure gauge;

[0028] 31. Second regulating valve; 32. Second pressure gauge;

[0029] 41. First stop valve; 42. Second stop valve;

[0030] 51. A first one-way valve; 52. A second one-way valve. DETAILED DESCRIPTION

[0031] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0032] See also Figures 1 to 3 . It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. Changes or adjustments in their relative relationships should also be regarded as the scope of the implementation of the utility model without substantially changing the technical content.

[0033] The following embodiments are only for illustration purposes and can be combined with each other, and are not limited to the contents presented in the following single embodiments.

[0034] See also Figures 1 to 3 The utility model provides a centralized liquid supply system for a printing press, the liquid supply system comprising:

[0035] At least two printing press liquid supply units, each of which includes a water supply branch pipe 11, a water return branch pipe 12 and a pressure control assembly, one end of the water supply branch pipe 11 is connected to the main water supply pipe 13, the other end of the water supply branch pipe 11 is connected to the water inlet end of the printing press 14, one end of the water return branch pipe 12 is connected to the water outlet end of the printing press 14, and the other end of the water return branch pipe 12 is connected to the first main water return pipe 15;

[0036] The pressure control component controls the pressure and / or flow rate of the fountain solution entering the printing machine 14. The pressure control component may control the pressure of the fountain solution entering the printing machine 14, or control the flow rate of the fountain solution entering the printing machine 14, or control the pressure and flow rate of the fountain solution entering the printing machine 14.

[0037] The printer 14 may be a bucket printer or a spray printer, etc. The printer 14 corresponding to a single printer liquid supply unit may be a bucket printer or a spray printer, that is, all printer liquid supply units may supply liquid to bucket printers (the bucket printers here may be of the same model or different models), or all printer liquid supply units may supply liquid to spray printers (the spray printers here may be of the same model or different models), or some printer liquid supply units may supply liquid to bucket printers (the bucket printers here may be of the same model or different models) and some printer liquid supply units may supply liquid to spray printers (the spray printers here may be of the same model or different models).

[0038] By providing each printing press with a corresponding printing press liquid supply unit, it is possible to supply fountain solution to different printing presses.

[0039] In the first embodiment of the pressure control assembly, see Figure 1 , the pressure control assembly includes a pressure regulating branch pipe 21 and a first regulating valve 22;

[0040] One end of the pressure regulating branch pipe 21 is connected to the water supply branch pipe 11 , and the other end of the pressure regulating branch pipe 21 is connected to the second main water return pipe 16 . The first regulating valve 22 is disposed on the pressure regulating branch pipe 21 .

[0041] The first regulating valve 22 may be a manual valve, an electric valve, a pneumatic valve, etc. The first regulating valve 22 may also be a pressure reducing valve or a back pressure valve, etc.

[0042] The pressure regulating branch pipe 21 is also provided with a first pressure gauge 23 .

[0043] The spray printer has high requirements on the water pressure of the fountain solution and needs to ensure a constant pressure of the fountain solution. By setting the pressure regulating branch pipe 21 and the first regulating valve 22, the water pressure of the water supply branch pipe 11 can be ensured to be constant, thereby realizing the supply of fountain solution to the spray printer.

[0044] In this embodiment, please refer to Figure 1, the first main return pipe and the second main return pipe are the same water pipe. At this time, the other end of the pressure regulating branch pipe 21 is connected to the second main return pipe. The pressure regulating branch pipe 21 can be directly connected to the first main return pipe 15; or the pressure regulating branch pipe 21 is connected to the return branch pipe 12, and is indirectly connected to the first main return pipe 15 through the return branch pipe 12. Since the water pressure of the water supply branch pipe 11 is generally greater than the water pressure of the return branch pipe 12, if the pressure regulating branch pipe 21 is connected to the return branch pipe 12, the larger water pressure in the pressure regulating branch pipe 21 will affect the normal return of the return branch pipe 12, so it is necessary to set a pressurizer between the pressure regulating branch pipe 21 and the printing press 14 on the return branch pipe 12 to ensure normal return.

[0045] In this embodiment, please refer to Figure 2 , or the first main water return pipe and the second main water return pipe are different water pipes. In this embodiment, please refer to Figure 1 , the pressure control assembly further comprises a first one-way valve 51;

[0046] The first check valve 51 is installed on the return branch pipe 12 . The intersection of the pressure regulating branch pipe 21 and the return branch pipe 12 is a first intersection. The first check valve 51 is located between the first intersection and the water outlet of the printing press 14 .

[0047] In this embodiment, please refer to Figure 1 , the pressure control assembly further comprises a first stop valve 41;

[0048] The first stop valve 41 is installed on the water supply branch pipe 11 .

[0049] The intersection point of the pressure regulating branch pipe 21 and the water supply branch pipe 11 is the second intersection point;

[0050] The first stop valve 41 may be located between the second intersection and the water inlet end of the printing press 14, or the first stop valve 41 may be located between the second intersection and the main water supply pipe 13;

[0051] By providing the first stop valve 41 , when the printing press 14 needs to be shut down, the first stop valve 41 can be closed, so that the fountain solution will not enter the printing press 14 again.

[0052] For a second embodiment of the pressure control assembly, see Figure 3 , the pressure control assembly includes a second regulating valve 31, and the second regulating valve 31 is arranged on the water supply branch pipe 11;

[0053] The second regulating valve 31 may be a manual valve, an electric valve, a pneumatic valve, etc. The second regulating valve 31 may also be a pressure reducing valve or a back pressure valve, etc.;

[0054] The water supply branch pipe 11 is also provided with a second pressure gauge 32 .

[0055] The second regulating valve 31 can be used to adjust the pressure or flow of the dampening solution in the water supply branch pipe 11 .

[0056] In the centralized liquid supply system, the printing press 14 can be either a bucket-type printing press or a spray-type printing press, that is, the spray-type printing press supplies the fountain solution through the pressure-regulating branch pipe 21 and the first regulating valve 22, and the bucket-type printing press supplies the fountain solution through the pressure-regulating branch pipe 21 and the first regulating valve 22 or through the second regulating valve 31.

[0057] In this embodiment, please refer to Figure 3 , the pressure control assembly further includes a second one-way valve 52;

[0058] The second one-way valve 52 is disposed on the water return branch pipe 12 .

[0059] In this embodiment, please refer to Figure 3 , the pressure control assembly further includes a second stop valve 42;

[0060] The second stop valve 42 is installed on the water supply branch pipe 11 .

[0061] By providing the second stop valve 42 , when the printing press 14 needs to be shut down, the second stop valve 42 can be closed, so that the fountain solution will not enter the printing press 14 again.

[0062] In the entire liquid supply system, all the printing press liquid supply units may be implemented by all the same pressure control components, may be partially implemented by the same pressure control components, or may be implemented by all different pressure control components.

[0063] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A centralized liquid supply system for a printing press, characterized in that: The liquid supply system comprises: At least two printing press liquid supply units, each of which includes a water supply branch pipe, a return branch pipe and a pressure control component, one end of the water supply branch pipe is connected to the main water supply pipe, and the other end of the water supply branch pipe is connected to the water inlet end of the printing press, one end of the return branch pipe is connected to the water outlet end of the printing press, and the other end of the return branch pipe is connected to the first main return pipe, and the pressure control component controls the pressure and / or flow of the dampening solution entering the printing press.

2. A centralized liquid supply system for a printing press according to claim 1, characterized in that: The pressure control assembly includes a pressure regulating branch pipe and a first regulating valve; One end of the pressure regulating branch pipe is connected to the water supply branch pipe, and the other end of the pressure regulating branch pipe is connected to the second main return pipe. The first regulating valve is arranged on the pressure regulating branch pipe.

3. A centralized liquid supply system for a printing press according to claim 2, characterized in that: The first main water return pipe and the second main water return pipe are the same water pipe; Or the first main water return pipe and the second main water return pipe are different water pipes.

4. A centralized liquid supply system for a printing press according to claim 2, characterized in that: The first regulating valve is a manual valve, an electric valve, or a pneumatic valve.

5. A centralized liquid supply system for a printing press according to claim 2, characterized in that: The pressure control assembly also includes a first one-way valve; The first one-way valve is installed on the return branch pipe, the intersection of the pressure regulating branch pipe and the return branch pipe is the first intersection, and the first one-way valve is located between the first intersection and the water outlet of the printing press.

6. A centralized liquid supply system for a printing press according to claim 2, characterized in that: The pressure control assembly also includes a first stop valve; The first stop valve is installed on the water supply branch pipe.

7. A centralized liquid supply system for a printing press according to claim 1, characterized in that: The pressure control assembly includes a second regulating valve, and the second regulating valve is arranged on the water supply branch pipe.

8. A centralized liquid supply system for a printing press according to claim 7, characterized in that: The pressure control assembly also includes a second one-way valve; The second one-way valve is arranged on the return water branch pipe.

9. A centralized liquid supply system for a printing press according to claim 8, characterized in that: The pressure control assembly also includes a second stop valve; The second stop valve is installed on the water supply branch pipe.

10. The centralized liquid supply system for a printing press according to claim 1, characterized in that: The printing press is a water bucket type printing press or a spray type printing press.

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