CN111013955B

CN111013955B - Novel backflow device for coating machine

Info

Publication number: CN111013955B
Application number: CN201911408543.6A
Authority: CN
Inventors: 肖蔓达; 刘亮; 明天
Original assignee: Wuhan Huacai Photoelectric Co ltd
Current assignee: Wuhan Huacai Photoelectric Co ltd
Priority date: 2019-12-31
Filing date: 2019-12-31
Publication date: 2021-07-23
Anticipated expiration: 2039-12-31
Also published as: CN111013955A

Abstract

The application discloses novel reflux unit is used to coating machine, a serial communication port, novel reflux unit is used to coating machine includes: silo, back flow, overflow baffle, overflow pipe, overflow altitude pipe, one-level backward flow groove, first second grade backward flow groove, second grade backward flow groove, a plurality of filter equipment, a plurality of valve and feed liquid pumping installations, the silo one-level backward flow groove and two second grade backward flow grooves are arranged from high to low in proper order. Through the technical scheme in this application, can make the feed liquid can recycle smoothly, especially when filtering high viscosity fluid, the impurity in the fluid can be filtered as far as possible to second grade alternate filtration, can also prevent to spatter all around because of the feed liquid that the overflow pipe blockked up and take place, reduces the pollution to equipment and product, lets equipment have the effect more nimble when using, and then perfect equipment function and performance.

Description

Novel backflow device for coating machine

Technical Field

The application relates to the field of coating machines, in particular to a novel backflow device for a coating machine.

Background

The coating machine is mainly used for the surface coating process production of films, paper and the like, and the coating machine is used for coating a layer of glue, paint or ink with a specific function on a coiled substrate, drying and then rolling. In current actual production, scribble the rod and rotate in the silo and can pollute the feed liquid, if do not clear up the impurity in the pollution liquid, can influence the quality of finished product. The main task of the filter device is to separate impurities from the fluid, and the impurities in the fluid should be kept as low as possible. However, the feed liquid coated by the coating roller is often relatively viscous and easy to agglomerate, so that the existing reflux device is often easy to block a reflux channel when the feed liquid is refluxed and filtered, and the feed liquid is easy to splash when the feed liquid is refluxed, and the splashed feed liquid pollutes equipment and products to form waste products.

Disclosure of Invention

The utility model provides a purpose is to the defect of above-mentioned prior art, provides a novel reflux unit for coating machine, can make the feed liquid can recycle smoothly, especially when filtering high viscosity fluid, and the impurity in the fluid can be filtered as far as possible to the second grade alternative filtration, can also prevent to spatter all around because of the feed liquid that the overflow pipe blockked up the emergence to through carrying out the mode that the subregion overflow was retrieved to the silo, reduce the pollution to equipment and product.

In order to achieve the purpose, the technical scheme of the application is as follows:

the utility model provides a novel reflux unit is used to coating machine which characterized in that, novel reflux unit includes for the coating machine: a material groove, a return pipe, an overflow baffle, an overflow pipe, an overflow height pipe, a first-stage return groove, a first second-stage return groove, a second-stage return groove, a plurality of filtering devices, a plurality of valves and a material liquid pumping device,

the material tank, the primary reflux groove and the two secondary reflux grooves are sequentially arranged from high to low, the overflow baffle is arranged in the material tank so as to divide the interior of the material tank into an overflow area and a reflux area, the bottom of the material tank is provided with an overflow port and a reflux port, and at least one of the primary reflux groove and the two secondary reflux grooves is provided with a filtering device; the primary reflux groove is respectively communicated with the reflux port and the overflow port; the first secondary reflux tank and the second secondary reflux tank are respectively connected to the primary reflux tank through respective feeding pipes; the valves corresponding to the first secondary reflux tank and the second secondary reflux tank are opened and closed in pairs and alternately opened and closed, and the states of the valves at the feed inlet and the discharge outlet of the first secondary reflux tank are opposite to those of the valves at the second secondary reflux tank; the overflow height pipe is used for performing overflow work when the overflow pipe is blocked, the discharge ports of the first secondary reflux groove and the second secondary reflux groove are communicated to the material groove through pipelines respectively, and the material liquid pumping device is arranged in the whole reflux pipeline and used for pumping material liquid towards the downstream.

In a preferred implementation, the feed liquid pumping device is arranged at a return opening of the trough.

In another preferred implementation, the primary reflux tank and each of the two secondary reflux tanks are equipped with a filtration device.

In another preferred implementation, the filtering device includes: cartridge filter and filter screen groove, the discharge gate of one-level backward flow groove, the feed inlet of first second grade backward flow groove and second grade backward flow groove set up a cartridge filter respectively, the discharge gate of first second grade backward flow groove and second grade backward flow groove sets up a filter screen groove respectively.

In another preferred implementation mode, the first secondary reflux tank and the second secondary reflux tank are alternately filtered and cleaned, and particularly when the feed liquid is high-viscosity liquid, the alternate filtering time is shorter.

In another preferred implementation, the filter cylinder and the filter screen groove are both of detachable cleaning construction; when one of the two-stage reflux tanks is cleaned, the valve at the material inlet and the valve at the material outlet of the two-stage reflux tank are closed, and the valve at the material inlet and the valve at the material outlet of the other two-stage reflux tank are opened, so that the two-stage reflux tanks can be cleaned and filtered alternately; the valve uses a timing solenoid valve to set the alternate filtration time.

In another preferred implementation, the filter cylinder is in threaded connection with the corresponding feed opening.

In another preferred implementation mode, the height of the overflow height pipe is consistent with that of the overflow baffle, so that overflow work can be carried out when the overflow pipe is blocked, and splashing is prevented.

In another preferred implementation manner, the discharge port of the primary reflux groove is formed in the bottom of the primary reflux groove, and the filtering device is connected with the bottom of the primary reflux groove by a buckle.

In another implementation mode, the material liquid pumping devices are also arranged at the discharge ports of the primary reflux groove and the secondary reflux groove.

It should be noted that, in the present invention, the upstream and downstream refer to the upstream and downstream relationship in the process of the reflux cycle from the material tank to the primary reflux tank to the secondary reflux tank.

The beneficial effect of this application:

in addition, this application is through separating into backward flow district and overflow district two parts with the silo, work area as the roller is scribbled to the backward flow district, regard the overflow district as the separation district, can effectively reduce the influence of overflow to the backward flow district, and because the cell wall height of silo is higher than the overflow baffle, even if do not directly flow back to the silo from one-level backward flow groove through filterable overflow, overflow in the overflow district only when exceeding the overflow baffle, just can flow into the backward flow district from the overflow baffle of overflowing on the upper portion, make most impurity restricted in overflow district below, effectively restrain the backward flow of impurity.

In addition, the overflow pipe is communicated with the return pipe, so that the feed liquid is fully recycled, and meanwhile, the splashing phenomenon is caused when one of the overflow pipe and the return pipe is blocked; the filtering cylinder is arranged in the primary reflux groove and is made into a filtering net shape, so that part of impurities can be filtered in the primary reflux groove in one step, and the filtering cylinder is connected with the primary reflux groove by a buckle in order to facilitate the disassembly of the filtering cylinder; the first secondary reflux groove and the second secondary reflux groove are provided with filtering cylinders at the feed inlets, so that the feed liquid is further filtered when entering the secondary reflux groove, and meanwhile, a filtering screen groove is also arranged at the discharge outlet of the secondary reflux groove, so that the feed liquid is fully cleaned before entering the feed groove; when the first and second-stage reflux tanks are cleaned, the inlet and outlet valves of the first and second-stage reflux tanks are closed, the inlet and outlet valves of the second-stage reflux tanks are opened, so that the second-stage reflux tanks participate in the circulating filtration, and the first and second-stage reflux tanks and the second-stage reflux tanks are alternately used, so that the filtration and cleaning work can be better completed; the overflow height pipe can carry out overflow work when the overflow pipe takes place to block up, guarantees going on smoothly of overflow, prevents to splash.

Through the technical scheme in this application, can make the feed liquid can recycle smoothly, especially when filtering high viscosity fluid, the impurity in the fluid can be filtered as far as possible to second grade alternate filtration, can also prevent to spatter all around because of the feed liquid that the overflow pipe blockked up and take place, reduces the pollution to equipment and product, lets equipment have the effect more nimble when using, and then perfect equipment function and performance.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a reflow apparatus in an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived from the embodiments of the present application by a person skilled in the art without making any creative effort, should be included in the protection scope of the present application.

Fig. 1 is a schematic structural diagram of the novel backflow device for a coater according to this embodiment, and the backflow device is used for filtering and refluxing materials for the coater in a tank. As shown, the reflow apparatus includes: silo 1, back flow 2, overflow baffle 3, overflow pipe 4, one-level backward flow groove 6, first second grade backward flow groove 9, second grade backward flow groove 13, cartridge filter 5, first filter screen groove 10 and second filter screen groove 14, feed liquid pumping device 18.

The overflow baffle 3 is arranged in the trough 1, so that an overflow area and a return area are separated from the trough 1, the return area is used as a coating roller working area, the overflow area is used as a return pressure reduction area, the bottom of the trough 1 is provided with an overflow port and a return port which are respectively positioned at two sides of the overflow baffle 3, the return pipe 2 is positioned below the trough 1 (on one side of the overflow area of the overflow baffle 3) and communicated with the return port at the lower part of the trough 1, the other end of the return pipe 2 is connected to the middle upper part of the primary return tank 6, preferably, a filtering cylinder 5 is arranged in the primary return tank 6 and fixed at the bottom of the primary return tank 6 and above the discharge port of the primary return tank 6, and the discharge port of the primary return tank 6 is respectively communicated to the first secondary return tank 9 and the second secondary return tank 13 through a communicating pipeline (a feed pipe); the upper part of the primary reflux groove 6 is communicated to an overflow port of the material groove 1 through an overflow pipe 4; the

secondary reflux tanks

9 and 13 may be provided with

filter cells

10 and 14 and

filter cylinders

8 and 12, respectively; the

filtering cylinders

8 and 12 are arranged at the openings of the pipelines extending from the primary reflux grooves to the corresponding secondary reflux grooves, and the

filtering cylinders

8 and 12 are convenient to disassemble and clean; the bottoms of the two secondary reflux grooves are communicated to the material groove 1 through the material discharging pipe.

The feed pipes and the discharge pipes of the two secondary reflux grooves are respectively provided with a

valve

7, 11,15 and 16; the

filter cylinders

8 and 12 and the

filter cells

10 and 14 are constructed to be easily removed for cleaning, such as by being detachably fastened or screwed in their desired positions; the

valves

7, 11,15,16 are opened and closed in pairs, i.e. the first secondary return tank 9, the inlet valve 7 and the outlet valve 16, are operated in coordination with each other, and are opened or closed simultaneously, in a state exactly opposite to the second secondary return tank. When the first secondary reflux groove 9 is cleaned, the material inlet and

outlet valve

7 and 16 are closed, and the material inlet and

outlet valve

11 and 15 of the second secondary reflux groove 13 are opened, so that the first secondary reflux groove and the second secondary reflux groove can be cleaned and filtered alternately.

Preferably, an overflow height pipe 17 is further arranged between the upper side part of the trough 1 and the primary reflux groove 6, and the overflow height pipe 17 can perform overflow work when the overflow pipe 3 is blocked, so that smooth overflow is ensured, and splashing is prevented.

Through the technical scheme in this application, can enough make feed liquid recycle smoothly, especially when filtering high viscosity fluid, the impurity in the fluid can be filtered as far as possible to second grade alternate filtration, can also prevent to reduce the pollution to equipment and product because of the feed liquid that the overflow pipe blockked up takes place splashes all around, lets equipment more nimble when using have the effect, and then perfect equipment function and performance.

In a preferred implementation, the filtering cylinder 5 is connected with the bottom of the primary reflux groove 6 by a snap fit. The discharge hole of the first-stage reflux groove 6 is arranged at the bottom, which is beneficial to full filtration.

The valves of the first second-stage reflux tank 9 and the second-stage reflux tank 12 are opened or closed in pairs, when the inlet and

outlet valves

7 and 16 of the first second-stage reflux tank 9 are closed, the inlet and

outlet valves

11 and 15 of the second-stage reflux tank are opened, otherwise, when the inlet and

outlet valves

11 and 15 of the second-stage reflux tank 13 are closed, the inlet and

outlet valves

7 and 16 of the first second-stage reflux tank are opened. When the valve corresponding to the first secondary reflux groove 9 or the second secondary reflux groove 12 is closed, the filtering cylinder, the filtering screen groove and the reflux groove can be cleaned, and the other one can keep working. And the alternate filtration and cleaning of the first secondary reflux groove 9 and the second secondary reflux groove 13 can be realized.

The second-stage reflux

tank filtering cylinders

8 and 12 and the feeding hole can be in threaded connection, and the second-stage reflux tank filtering cylinders are convenient to disassemble and clean.

The first secondary reflux groove 9 and the second secondary reflux groove 13 are provided with

filter screen grooves

10 and 14 at the discharge hole, so that the cleanness of the feed liquid is further ensured.

In another preferred implementation manner, a filtering cylinder is arranged at the outlet end of each secondary reflux tank, a pressure sensor is arranged at the front end of each filtering cylinder, so that the pressure of the feed liquid at the inlet end of the corresponding secondary reflux tank is measured, the measured pressure value is transmitted to a control system of a reflux device or an external alarm device, when the pressure measured at the working secondary reflux tank exceeds a predetermined threshold value, the control system drives a valve in the pipeline of the other secondary reflux tank to open, and after the valve in the pipeline of the other reflux tank is opened, the valve in the pipeline of the secondary reflux tank is closed, and the cleaning is performed by a worker.

Preferably, the overflow pipe 17 is at the same height as the overflow baffle 3, so that the overflow work can be performed when the overflow pipe 4 is blocked, and splashing can be prevented.

The foregoing shows and describes the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are presented solely for purposes of illustrating the principles of the application and that various changes and modifications may be made without departing from the spirit and scope of the application and these changes and modifications are intended to be within the scope of the application as claimed. The scope of the claims herein is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a novel reflux unit is used to coating machine which characterized in that, novel reflux unit includes for the coating machine: a material groove, a return pipe, an overflow baffle, an overflow pipe, an overflow height pipe, a first-stage return groove, a first second-stage return groove, a second-stage return groove, a plurality of filtering devices, a plurality of valves and a material liquid pumping device,

the material groove, the primary reflux groove and the two secondary reflux grooves are sequentially arranged from high to low, the overflow baffle is arranged in the material groove so as to divide the interior of the material groove into an overflow area and a reflux area, and an overflow port and a reflux port are arranged at the bottom of the material groove; the primary reflux groove is respectively communicated with the reflux port and the overflow port; the first secondary reflux tank and the second secondary reflux tank are respectively connected to the primary reflux tank through respective feeding pipes; the valves corresponding to the first secondary reflux tank and the second secondary reflux tank are opened and closed in pairs and alternately opened and closed, and the states of the valves at the feed inlet and the discharge outlet of the first secondary reflux tank are opposite to those of the valves at the second secondary reflux tank; the overflow height pipe is used for performing overflow work when the overflow pipe is blocked, the discharge holes of the first secondary reflux groove and the second secondary reflux groove are respectively communicated to the material groove through a pipeline, the material liquid pumping device is arranged in the whole reflux pipeline and used for pumping material liquid towards downstream, a filtering cylinder is arranged at the feed inlet of each secondary reflux groove, a pressure sensor is arranged at the front end of each filtering cylinder so as to measure the material liquid pressure at the feed inlet of the corresponding secondary reflux groove and transmit the measured pressure value to a control system of the reflux device or an external alarm device, when the pressure measured at the secondary reflux groove in a working state exceeds a preset threshold value, the control system drives a valve in the pipeline of the other secondary reflux groove to be opened, and after the valve in the pipeline of the other reflux groove is opened, and closing a valve in the pipeline of the secondary reflux tank, and cleaning by workers.

2. The novel reflow apparatus for coating machines of claim 1, wherein: the feed liquid pumping device is arranged at a return opening of the feed groove.

3. The novel reflow apparatus for coating machines of claim 1, wherein: and each of the first-stage return tank and the two second-stage return tanks is provided with a filtering device.

4. The novel reflow apparatus for coating machines of claim 1, wherein: the filtering device includes: cartridge filter and filter screen groove, the discharge gate of one-level backward flow groove, the feed inlet of first second grade backward flow groove and second grade backward flow groove set up a cartridge filter respectively, the discharge gate of first second grade backward flow groove and second grade backward flow groove sets up a filter screen groove respectively.

5. The novel reflow apparatus for coating machines of claim 1, wherein: the first secondary reflux tank and the second secondary reflux tank are alternately filtered and cleaned, and when the feed liquid is high-viscosity liquid, the alternate filtering time is shorter.

6. The new reflow apparatus for coating machine as claimed in claim 4, wherein the filter cylinder and the filter screen groove are detachable cleaning structures; when one of the two-stage reflux tanks is cleaned, the valve at the material inlet and the valve at the material outlet of the two-stage reflux tank are closed, and the valve at the material inlet and the valve at the material outlet of the other two-stage reflux tank are opened, so that the two-stage reflux tanks can be cleaned and filtered alternately; the valve uses a timing solenoid valve to set the alternate filtration time.

7. The novel reflow apparatus for coating machines of claim 4, wherein: the filtering cylinder is in threaded connection with the feeding pipe.

8. The novel reflow apparatus for coating machines of claim 1, wherein: the overflow height pipe is consistent with the height of the overflow baffle, so that the overflow pipe can perform overflow work when being blocked, and splashing is prevented.

9. The novel backflow device for the coating machine as claimed in claim 1, wherein the discharge port of the primary backflow groove is formed in the bottom of the primary backflow groove, and the filtering device is connected with the bottom of the primary backflow groove through a buckle.