CN214188844U - Dampening water pressure control device for printing machine - Google Patents
Dampening water pressure control device for printing machine Download PDFInfo
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- CN214188844U CN214188844U CN202023073133.1U CN202023073133U CN214188844U CN 214188844 U CN214188844 U CN 214188844U CN 202023073133 U CN202023073133 U CN 202023073133U CN 214188844 U CN214188844 U CN 214188844U
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Abstract
The utility model relates to a lithography apparatus field, concretely relates to press fountain water pressure control device. The utility model discloses a press fountain water pressure control device, include: a water storage tank, a water supply pipe, a branch water supply valve, a fluid conveying device and a back pressure valve; the water inlet end of the water supply pipeline is communicated with the water storage tank through a fluid conveying device; the water inlet end of the branch water supply pipe is communicated with the water outlet end of the water supply pipeline, the water outlet end of the branch water supply pipe is communicated with the printing machine, and the branch water supply pipes are arranged in parallel; each branch water supply pipe is correspondingly provided with a branch water supply valve; the water inlet end of the back pressure valve is communicated with the water supply pipeline, and the water outlet end of the back pressure valve is communicated with the water storage tank. Through the setting mode, the working pressure of the back pressure valve can be adjusted in advance as required, when the pressure is higher than the adjusting value, the back pressure valve is automatically opened, redundant water is drained, the water supply pressure of dampening water is kept constant, and the printing quality problems such as waste products and production stop caused by water supply pressure fluctuation are avoided.
Description
Technical Field
The utility model relates to a lithography apparatus field especially relates to a printing machine dampening controlling means.
Background
The printing machine in the offset lithography needs to use dampening water, the dampening water is formed by mixing water and dampening solution in a certain proportion, and can form a uniform water film on the blank part of the printing plate to resist ink at the image-text position from infiltrating the blank part and prevent the printing plate from being dirty; a chemical reaction is carried out to form a new hydrophilic layer, and the hydrophilicity of the blank part of the printing plate is maintained; and controlling the temperature of the printing ink on the layout. Dampening water is provided by a special dampening water tank.
The stability of the printing quality can only be guaranteed if the parameters of the dampening water, of which the water supply pressure is an important parameter, are kept constant.
The water supply capacity of the supply pump of the dampening water tank is constant, but the requirements of the overall water supply system on the supply pressure vary during the printing process, for example: the user may close individual color groups as desired, or adjust the water supply pressure as desired for printing speed and print; when water is supplied to multiple printers, a user may shut down some of the printers. These conditions all cause the pressure of the dampening water to change, and when the pressure is suddenly increased, the water supply amount is increased, which may cause the liquid level in the water bucket to fluctuate and even overflow. When the pressure is reduced, the dampening water is not supplied enough, and particularly when spraying dampening is adopted, the spraying device can work normally as usual, and the printing quality and the normal operation of the printing machine are seriously influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a method for at least partially solving the problems of the prior art.
In order to realize the above purpose, the technical scheme of the utility model a printing machine dampening water pressure control device is provided, include: a water storage tank, a water supply pipe, a branch water supply valve, a fluid conveying device and a back pressure valve; the water inlet end of the water supply pipeline is communicated with the water storage tank through a fluid conveying device; the water inlet end of the branch water supply pipe is communicated with the water outlet end of the water supply pipeline, the water outlet end of the branch water supply pipe is communicated with the printing machine, and the branch water supply pipes are arranged in parallel; each branch water supply pipe is correspondingly provided with a branch water supply valve; the water inlet end of the back pressure valve is communicated with the water supply pipeline, and the water outlet end of the back pressure valve is communicated with the water storage tank.
In this scheme, the operating pressure of back pressure valve can be set as required in advance, and when pressure was higher than the regulating value, the back pressure valve was automatic to be opened, arranges unnecessary water, makes the water supply pressure of dampening water keep invariable. In the method, the opening and closing of the back pressure valve are automatically controlled by the valve, manual operation is not needed, the pressure before the pressure valve can be always kept at the set pressure value, the workload of an operator is greatly reduced, and the problems of printing quality such as waste products and production stop caused by water supply pressure fluctuation are avoided.
In the above technical solution, preferably, the method further includes: and the pressure gauge is connected between the water inlet end of the backpressure valve and the water supply pipe in series.
In any of the above technical solutions, preferably, the range of the pressure gauge is 0 to 10 bar.
In any of the above technical solutions, preferably, the method further includes: and the dampening water in the branch water supply pipe flows back to the water storage tank through the water return pipe after passing through the printing machine.
In any of the above technical solutions, preferably, the method further includes: the branch road wet return sets up with branch road delivery pipe one-to-one, and the branch road wet return is established ties between the end of intaking of wet return and printing machine, and a plurality of branch road wet return are parallelly connected to be set up, and wherein, the damping water in the branch road delivery pipe flows through the printing machine after, flows into the wet return through the branch road wet return that corresponds.
In any one of the above technical solutions, preferably, the working range of the back pressure valve is 0 to 10 bar.
In any of the above technical solutions, preferably, the outer surface of the water storage tank is covered with an insulating layer.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a press fountain water pressure control apparatus according to one embodiment of the present invention;
fig. 2 is a schematic structural view of a fountain water pressure control device of a printing press according to an embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the component names in fig. 1 and fig. 2 is:
10 water storage tanks, 20 water supply pipes, 30 branch water supply pipes, 40 branch water supply valves, 50 fluid conveying devices, 60 backpressure valves, 70 pressure meters, 80 water return pipes, 90 branch water return pipes and 100 printing machines.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
It should be noted that, in the case of no conflict, the features in the following embodiments and examples may be combined with each other; moreover, all other embodiments that can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort fall within the scope of the present disclosure.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the disclosure, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
Some embodiments according to the invention are described below with reference to fig. 1 and 2.
Example 1
Referring to fig. 1 (in which the direction of arrows indicates the dampening water flow direction), the present embodiment provides a dampening water pressure control apparatus of a printing press 100, including: a water storage tank 10, a water supply pipe 20, a branch water supply pipe 30, a branch water supply valve 40, a fluid transfer device 50, and a back pressure valve 60; the water inlet end of the water supply pipe 20 is communicated with the water storage tank through a fluid conveying device 50; the water inlet end of the branch water supply pipe 30 is communicated with the water outlet ends of the water supply pipes 20, the water outlet ends of the branch water supply pipes 30 are communicated with the printing machine 100, and the branch water supply pipes 30 are arranged in parallel; each branch water supply pipe 30 is correspondingly provided with a branch water supply valve 40; the water inlet end of the backpressure valve 60 is communicated with the water supply pipe 20, and the water outlet end of the backpressure valve 60 is communicated with the water storage tank.
In this scheme, the operating pressure of back pressure valve 60 can be set as required in advance, and when pressure was higher than the regulating value, back pressure valve 60 opened automatically, drained unnecessary water, made the water supply pressure of dampening water keep invariable. In the method, the opening and closing of the back pressure valve 60 are automatically controlled by the valve, manual operation is not needed, the pressure before the pressure valve can be always kept at the set pressure value, the workload of an operator is greatly reduced, and the problems of printing quality such as waste products and production stop caused by water supply pressure fluctuation are avoided.
In a preferred embodiment, the method further comprises: and a pressure gauge 70 connected in series between the water inlet end of the back pressure valve 60 and the water supply pipe 20.
In a preferred embodiment, the pressure gauge 70 has a range of 0 to 10 bar.
In this scheme, through setting up manometer 70, can make the operator know real-time pressure, the control of being convenient for.
In a preferred embodiment, the method further comprises: and the water return pipe 80 is communicated with the printing machine 100 at the water inlet end of the water return pipe 80, the water outlet end of the water return pipe 80 is communicated with the water storage tank, and dampening water in the branch water supply pipe 30 flows back to the water storage tank through the water return pipe 80 after passing through the printing machine 100.
In this scheme, through setting up wet return 80, can realize the circulation of dampening water.
The on/off of the branch inlet pipe can be controlled by controlling the opening and closing of the branch water supply valve 40. The branch water inlet pipe is a branch water pipe of the water supply pipe 20, and delivers dampening water to different water usage positions of the printing press 100.
In a preferred embodiment, the method further comprises: the branch water return pipes 90 are arranged in one-to-one correspondence with the branch water supply pipes 30, the branch water return pipes 90 are connected in series between the water inlet ends of the water return pipes 80 and the printing machine 100, and the branch water return pipes 90 are arranged in parallel, wherein dampening water in the branch water supply pipes 30 flows into the water return pipes 80 through the corresponding branch water return pipes 90 after flowing through the printing machine 100.
In a preferred embodiment, the back pressure valve 60 operates in the range of 0 to 10 bar.
In a preferred embodiment, the outer surface of the storage tank 10 is covered with an insulating layer,
in the scheme, the heat preservation layer covers the outer surface of the water storage tank 10, so that on one hand, the temperature in the water storage tank 10 is convenient to keep stable, and the dampening water temperature is convenient to be constant in a temperature range suitable for printing; on the other hand, due to the fact that the temperature of the dampening water is low, dew condensation on the outer side of the water storage tank 10 can be reduced.
In a specific embodiment of this embodiment, the water storage tank is a water storage tank of a dampening device, and is used for storing proportioned dampening water suitable for printing, and is connected with the water supply pipe 20, the water return pipe 80 and the pressure relief pipe through pipe fittings.
The fluid delivery device 50 (e.g., a water supply pump) has a water inlet end connected to the water storage tank and a water outlet end connected to the water supply pipe 20, and supplies water in the water storage tank to the printing machine 100 through the water supply pipe 20.
The water supply pipe 20 is a pipe between the water supply pump and the printing press 100, and supplies dampening water pumped by the water pump to the printing press 100.
The return pipe 80 conveys the return water back to the storage tank.
The pressure gauge 70 is a pressure gauge 70 with a proper measuring range, is arranged in front of the water inlet end of the backpressure valve 60 and displays the pressure in the pipeline.
The back pressure valve 60 is a back pressure valve 60 whose working pressure is adjustable. Is arranged between a pipeline needing pressure regulation and the water storage tank and is connected with the water storage tank through a pressure relief pipeline. When the pressure before the valve is larger than the set value, the valve is automatically opened.
The pressure relief pipe is a pipeline connecting the water outlet end of the backpressure valve 60 and the water storage tank.
The branch water supply valve 40 (for example, a flow rate control valve) is a valve mounted on the branch water inlet pipe, and is used for adjusting the amount of dampening water of each branch and opening and closing the dampening water.
The branch water inlet pipe is a branch water pipe of the water supply pipe 20, and delivers dampening water to different water usage positions of the printing press 100.
And (3) fully opening all the branch water supply valves 40, adjusting the set value of the backpressure valve 60 to the required working pressure according to the reading of the pressure gauge 70, and when the pressure is higher than the set value, automatically opening the backpressure valve 60, so that the redundant water in the water supply pipeline 20 flows back to the water storage tank through the water outlet end of the backpressure valve 60 and the pressure in the water supply pipeline 20 is kept at the set value. In the working process of the printing machine 100, when the flow of the branch water supply valve 40 is reduced or closed, the opening degree of the back pressure valve 60 can be automatically increased, and the residual flow flows back to the water storage tank through the water outlet end of the back pressure valve 60; when the bypass water supply valve 40 is opened or increased again, the pressure in front of the back pressure valve 60 is reduced, the opening degree of the back pressure valve 60 is automatically reduced, the flow rate in the water supply pipe 20 is increased, the pressure is increased, and the pressure balance is achieved again. So that the pressure in the water supply pipe 20 is always maintained at the set value.
Example 2
Referring to fig. 2 (the direction of the arrow in the figure is the flow direction of the fountain solution), the difference between this embodiment and embodiment 1 is that the water return pipe 80 is omitted in this embodiment, so as to simplify the structure, reduce the volume, and be suitable for a system without water return or with a high requirement on pressure accuracy.
In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.
In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A press fountain water pressure control apparatus, comprising:
a water storage tank, a water supply pipe, a branch water supply valve, a fluid conveying device and a back pressure valve;
the water inlet end of the water supply pipeline is communicated with the water storage tank through a fluid conveying device;
the water inlet end of the branch water supply pipe is communicated with the water outlet end of the water supply pipeline, the water outlet end of the branch water supply pipe is communicated with the printing machine, and the branch water supply pipes are arranged in parallel;
each branch water supply pipe is correspondingly provided with a branch water supply valve;
the water inlet end of the back pressure valve is communicated with the water supply pipeline, and the water outlet end of the back pressure valve is communicated with the water storage tank.
2. The press fountain water pressure control apparatus of claim 1, further comprising:
and the pressure gauge is connected between the water inlet end of the back pressure valve and the water supply pipe in series.
3. The press fountain water pressure control apparatus of claim 2,
the range of the pressure gauge is 0-10 bar.
4. The press fountain water pressure control apparatus of claim 1, further comprising:
the dampening water in the branch water supply pipe flows through the printing machine and then flows back to the water storage tank through the water return pipe.
5. The press fountain water pressure control apparatus of claim 4, further comprising:
branch water return pipes which are arranged in one-to-one correspondence with the branch water supply pipes, are connected in series between the water inlet end of the water return pipe and the printing machine, and are arranged in parallel,
and the dampening water in the branch water supply pipe flows into the water return pipe through the corresponding branch water return pipe after flowing through the printing machine.
6. The printing press fountain water pressure control device according to any one of claims 1 to 5,
the working range of the back pressure valve is 0-10 bar.
7. The printing press fountain water pressure control device according to any one of claims 1 to 5,
the outer surface of the water storage tank is covered with a heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023073133.1U CN214188844U (en) | 2020-12-18 | 2020-12-18 | Dampening water pressure control device for printing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023073133.1U CN214188844U (en) | 2020-12-18 | 2020-12-18 | Dampening water pressure control device for printing machine |
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| CN214188844U true CN214188844U (en) | 2021-09-14 |
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| CN202023073133.1U Active CN214188844U (en) | 2020-12-18 | 2020-12-18 | Dampening water pressure control device for printing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635869A (en) * | 2022-04-24 | 2022-06-17 | 山东省章丘鼓风机股份有限公司 | Slurry pump mechanical seal water supply system |
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2020
- 2020-12-18 CN CN202023073133.1U patent/CN214188844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114635869A (en) * | 2022-04-24 | 2022-06-17 | 山东省章丘鼓风机股份有限公司 | Slurry pump mechanical seal water supply system |
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