A cream coating production process

Abstract

The application relates to a cream coating production process and relates to the technical field of paper towels, which comprises a unwinding step, a coating step and a rewinding step, wherein the coating step comprises a reflux step, a filtering step and a liquid adding step, the reflux step comprises a reflux box and two reflux pipes communicated with the reflux box, filter screens are arranged at positions where the two reflux pipes are communicated with the reflux box, and valves are arranged on the two reflux pipes. The application has the advantage that the probability of the problem of poor reflux caused by paper scraps blocking the reflux port can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of paper towels, in particular to a cream coating production process. BACKGROUND

[0002] Paper towels are a kind of daily necessities. In order to make the paper towels more soft and comfortable in use, cream coating can be performed on the paper towels in production, so as to achieve the above purpose. In the coating process, the cream will be recycled, but in the reflux process, the paper scraps will block the reflux port, resulting in poor reflux. SUMMARY

[0003] In view of the deficiencies in the prior art, one of the purposes of the present application is to provide a cream coating production process, which has the advantage of reducing the probability of the problem of poor reflux caused by paper scraps blocking the reflux port.

[0004] The above purpose of the present application is realized by the following technical scheme:

[0005] A cream coating production process, comprising unwinding step, coating step and rewinding step, in the coating step, comprising reflux step, filtering step and liquid adding step, in the reflux step, comprising reflux tank and two reflux pipes connected with the reflux tank, the two reflux pipes are both provided with filter screens at the positions where they are connected with the reflux tank, and the two reflux pipes are both provided with valves.

[0006] By adopting the above technical scheme, in use, there are two reflux pipes, so when one reflux pipe is blocked, the other reflux pipe can be turned on, thereby greatly reducing the probability of poor reflux.

[0007] In a preferred example, the present application can be further configured as follows: the reflux tank is further provided with a partition plate, the partition plate divides the reflux tank into two chambers, the partition plate is further provided with a communication hole, the communication hole is used to connect the two chambers, the communication hole is provided with a filter screen, and the two reflux pipes and the two chambers are in one-to-one correspondence and communication.

[0008] By adopting the above technical scheme, the existence of the partition plate can reduce the paper scraps blocking the reflux pipe from flowing with the water flow to block the other reflux pipe.

[0009] In a preferred example, the present application can be further configured as follows: the reflux tank is further provided with a driving member for driving the partition plate to ascend and descend.

[0010] By adopting the above technical scheme, the existence of the driving member can make the two chambers communicate with each other when used normally, so that the paper scraps and other impurities can be concentrated on the filter screen of the reflux pipe in the on state.

[0011] The application can be further configured in a preferred example that the backflow box is further provided with two liquid discharge pipes, the two liquid discharge pipes are in one-to-one correspondence and communication with the two chambers, and valves are arranged on the two liquid discharge pipes.

[0012] By adopting the above technical scheme, in use, the liquid containing paper scraps and other impurities can be discharged by opening the liquid discharge pipes.

[0013] The application can be further configured in a preferred example that the application further comprises a flushing box, two flushing pipes and a pump, the pump is in communication with the flushing box, the two flushing pipes are in communication with the water outlet of the pump, the two flushing pipes are in one-to-one correspondence and communication with the two backflow pipes, and valves are arranged on the two flushing pipes.

[0014] By adopting the above technical scheme, in use, the liquid in the flushing box can be pumped out by the pump, and the blocked flushing pipe can be back-flushed, so that the paper scraps attached to the filter screen can be removed.

[0015] The application can be further configured in a preferred example that the application further comprises a control system, the control system comprises a flow module, a comparison module and an execution module, the flow module is used to collect flow data of the backflow pipe in a current on state and send the flow data to the comparison module, the comparison module compares the received flow data with a standard value, and if the flow data is less than the standard value, an execution signal is sent to the execution module, the execution module closes the valve on the backflow pipe in the current on state and opens the valve on the other backflow pipe in response to the execution signal.

[0016] By adopting the above technical scheme, the backflow pipe in the on state is monitored by the flow module, and when the flow is less than the standard value, the probability of poor backflow is reduced by replacing the backflow pipe.

[0017] The application can be further configured in a preferred example that the control system further comprises a flushing module, the execution module sends a flushing signal to the flushing module in response to the execution signal, the flushing module controls the driving assembly to drive the partition to move and divide the backflow box into two chambers in response to the flushing signal, the pump is started, and the valve on the corresponding flushing pipe is opened to flush the blocked backflow pipe.

[0018] By adopting the above technical scheme, in use, the pump is started by the flushing module to send the liquid into the blocked backflow pipe, so that the paper scraps attached to the filter screen can be removed.

[0019] The application can be further configured in a preferred example that the water outlet of the pump is also provided with two liquid injection pipes, the liquid injection pipes are in one-to-one correspondence with and communicated with the two chambers, the liquid injection pipes are provided with valves, the control system further comprises a liquid level module, the liquid level module is used for detecting the liquid level in the two chambers, when the liquid levels in the two chambers are inconsistent, the liquid level module sends an adjustment signal to the execution module, the execution module controls the pump to start, and the valve on the liquid injection pipe corresponding to the chamber with lower liquid level is turned on, and the valve on the liquid discharge pipe communicated with the other chamber is opened.

[0020] By adopting the above technical scheme, when the liquid levels in the two chambers are inconsistent in use, it indicates that the filter screen on the partition plate is blocked, so that the liquid is injected into the chamber with lower liquid level, so that the paper scraps attached to the filter screen are removed by the pressure of the water flow. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a schematic view of a backflow tank of the application.

[0022] Figure 2 is a schematic view of a control system of the application.

[0023] Reference signs: 11, backflow tank; 12, partition plate; 13, communication hole; 14, chamber; 15, backflow pipe; 16, liquid injection pipe; 17, flushing pipe; 18, liquid discharge pipe; 21, flow module; 22, comparison module; 23, execution module; 24, also a module; 25, flushing module. DETAILED DESCRIPTION

[0024] The application will be further described in detail below with reference to the accompanying drawings.

[0025] Reference Figure 1 and Figure 2 , a cream coating production process disclosed by the application, comprising a unwinding step, a coating step and a rewinding step, in the coating step, comprising a backflow step, a filtering step and a liquid adding step, in the backflow step, comprising a control system, a backflow tank 11, a flushing tank and a pump, the backflow tank 11 is provided with a backflow pipe 15 and a liquid discharge pipe 18, the backflow pipe 15 and the liquid discharge pipe 18 are communicated with the backflow tank 11, the backflow pipe 15 and the liquid discharge pipe 18 are both two, and each of the backflow pipe 15 and the liquid discharge pipe 18 is provided with a valve, and the two backflow pipes 15 are both provided with a filter screen at the communication position with the backflow tank 11. The communication position of the two backflow pipes 15 with the backflow tank 11 is located at the side wall of the backflow tank 11, and the communication position of the two liquid discharge pipes 18 with the backflow tank 11 is located at the bottom wall of the backflow tank 11.

[0026] The backflow box 11 is further provided with a partition plate 12, the partition plate 12 divides the backflow box 11 into two chambers 14, the partition plate 12 is further provided with a communication hole 13, the communication hole 13 is used for connecting the two chambers 14, the communication hole 13 is provided with a filter screen, and the two backflow pipes 15 and the two chambers 14 are one-to-one corresponding and communicated. The backflow box 11 is further provided with a driving member, in the embodiment, the driving member can be a pneumatic cylinder, a hydraulic cylinder or an electric push rod, and the driving member is used for driving the partition plate 12 to ascend and descend.

[0027] The two backflow pipes 15 and the two chambers 14 are one-to-one corresponding and communicated, and the two liquid discharge pipes 18 and the two chambers 14 are one-to-one corresponding and communicated.

[0028] The water inlet of the pump is connected with the flushing box through a pipeline, the water outlet of the pump is connected with the two flushing pipes 17, the two flushing pipes 17 and the two backflow pipes 15 are one-to-one corresponding and communicated, and the water outlet of the pump is further connected with the two liquid injection pipes 16, the two liquid injection pipes 16 and the two chambers 14 are one-to-one corresponding and used for injecting liquid into the chambers 14. The two flushing pipes 17 and the two liquid injection pipes 16 are both provided with valves.

[0029] The control system comprises a flow module 21, a comparison module 22, a flushing module 25, a liquid level module and an execution module 23, the flow module 21 is used for collecting flow data in the currently conducting backflow pipe 15 and sending the flow data to the comparison module 22, the comparison module 22 compares the received flow data with a standard value, if the flow data is less than the standard value, an execution signal is sent to the execution module 23, the execution module 23 responds to the execution signal, closes the valve on the currently conducting backflow pipe 15 and makes the valve on the other backflow pipe 15 conductive.

[0030] After the execution module 23 responds to the execution signal, a flushing signal is sent to the flushing module 25, the flushing module 25 responds to the flushing signal, controls the driving assembly to drive the partition plate 12 to move, divides the backflow box 11 into two chambers 14, controls the pump to start and makes the valve on the corresponding flushing pipe 17 conductive, and cleans the blocked backflow pipe 15.

[0031] The liquid level module is used for detecting the liquid level of the two cavities, when the liquid levels of the two cavities are inconsistent, the liquid level module sends an adjustment signal to the execution module 23, the execution module 23 controls the pump to start, makes the valve on the liquid injection pipe 16 corresponding to the chamber 14 with low liquid level conductive, and opens the valve on the liquid discharge pipe 18 connected with the other chamber 14.

[0032] The implementation principle of the embodiment is that: the larger paper scraps are blocked by the filter screen at the return pipe 15, and then the secondary filtering is performed through the subsequent filtering step, so that the filtering effect is better, and the probability of blocking of the filtering equipment in the filtering step is reduced. In order to facilitate the description, the double-numbered structures in the embodiment are divided into A and B, for example, return pipe A 15, return pipe B 15, flushing pipe A 17, and flushing pipe B 17, wherein the flushing pipe A 17 and the return pipe A 15 correspond to each other, that is, the structures with the same label (A or B) correspond to each other.

[0033] In use, for example, the return pipe A 15 is in the open state, when the flow module 21 detects the flow in the return pipe A 15, when the detected value is less than the standard value, it indicates that there is a blockage, so the valve on the return pipe A 15 is closed, the valve on the return pipe B 15 is opened, and the partition plate 12 is controlled to divide the return box 11 into two chambers 14 (chamber A 14 and chamber B 14) that are only communicated through the communication hole 13, then the pump works, the liquid in the flushing box is pumped out, and the liquid is sent into the return pipe A 15 through the flushing pipe A 17 to flush the filter screen on the return pipe A 15. During the flushing process, the filter screen at the communication hole 13 may be blocked, when the above-mentioned situation occurs, the liquid level in the chamber A 14 will be higher than that in the chamber B 14, at this time, the execution module 23 closes the valve on the flushing pipe A 17, opens the valve on the liquid injection pipe B 16, so as to inject liquid into the chamber B 14, so that the liquid level in the chamber B 14 is higher than that in the chamber A 14, and is higher than the highest point of the communication hole 13, and opens the valve on the liquid discharge pipe A 18, so that the liquid in the chamber A 14 can be discharged from the liquid discharge pipe A 18, thereby the impurities in the chamber A 14 can be discharged from the liquid discharge pipe A 18. During this process, the execution module 23 controls the partition plate 12 to reciprocate up and down, and keeps the communication hole 13 always below the liquid level of the chamber A 14, so as to enhance the impurity removal effect. When the execution module closes the valve on the flushing pipe A 17, it reads the flow data at the return pipe B 15 and judges, if it does not conform to the standard, the valve on the return pipe B 15 is closed, and the valve on the flushing pipe B 17 is opened.

[0034] The embodiments of the specific implementation are the preferred embodiments of the application, but do not limit the protection scope of the application, so that: any equivalent changes made according to the structure, shape, principle of the application should be covered within the protection scope of the application.

Claims

1. A cream coating production process, characterized in that: The process includes unwinding, coating, and rewinding steps. The coating step includes a reflux step, a filtration step, and a liquid addition step. The reflux step includes a reflux box (11) and two reflux pipes (15) connected to the reflux box (11). Filter screens are installed at the connection points between the two reflux pipes (15) and the reflux box (11). Valves are installed on both reflux pipes (15). A partition (12) is also provided inside the reflux box (11), dividing it into two chambers (14). A connecting hole (13) is provided on the partition (12) to connect the two chambers (14). A filter screen is installed inside the connecting hole (13). The two reflux pipes... (15) and two chambers (14) correspond one-to-one and are connected; the return box (11) is also provided with a drive component for driving the partition (12) to rise and fall; it also includes a control system, which includes a flow module (21), a comparison module (22) and an execution module (23). The flow module (21) is used to collect the flow data in the currently connected return pipe (15) and send the flow data to the comparison module (22). The comparison module (22) compares the received flow data with the standard value. If it is less than the standard data, it sends an execution signal to the execution module (23). The execution module (23) responds to the execution signal, closes the valve on the currently connected return pipe (15), and opens the valve on the other return pipe (15).

2. The cream coating production process according to claim 1, characterized in that: The reflux box (11) is also provided with a drain pipe (18). There are two drain pipes (18), and the two drain pipes (18) correspond one-to-one with the two chambers (14) and are connected. Both drain pipes (18) are provided with valves.

3. The cream coating production process according to claim 2, characterized in that: It also includes a flushing tank, a flushing pipe (17) and a pump. The pump and the flushing tank are connected. There are two flushing pipes (17) and both are connected to the outlet of the pump. The flushing pipe (17) and the two return pipes (15) are in one-to-one correspondence and connected. Valves are installed on both flushing pipes (17).

4. The cream coating production process according to claim 1, characterized in that: The control system also includes a flushing module (25). After the execution module (23) responds to the execution signal, it sends a flushing signal to the flushing module (25). The flushing module (25) responds to the flushing signal, controls the drive assembly to drive the partition (12) to move, divides the return box (11) into two chambers (14), controls the pump to start, and makes the valve on the corresponding flushing pipe (17) open to flush the blocked return pipe (15).

5. The cream coating production process according to claim 1, characterized in that: The pump outlet is also equipped with two injection pipes (16), which correspond one-to-one with the two chambers (14) and are connected. The injection pipes (16) are equipped with valves. The control system also includes a liquid level module, which is used to detect the liquid level in the two chambers (14). When the liquid level in the two chambers (14) is inconsistent, the liquid level module sends an adjustment signal to the execution module (23). The execution module (23) controls the pump to start and connects the valve on the injection pipe (16) corresponding to the chamber (14) with the lower liquid level, and opens the valve on the drain pipe (18) connected to the other chamber (14).

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