Circulating slurry feeding mechanism

Abstract

The utility model relates to a slurry feeding mechanism, in particular to a circulating slurry feeding mechanism. Comprising a slurry inlet pipe, a slurry barrel, a slurry conveying pipe, a slurry feeding unit, a slurry return pipe, a water return pipe and an electric control unit, the slurry inlet pipe connects the slurry barrel with a slurry room, the slurry feeding unit is connected with the slurry barrel through the slurry conveying pipe and the slurry return pipe, and the water return pipe is connected with the slurry conveying pipe and can pump water in the slurry barrel back to the slurry room. The electric control unit can control the valves and the diaphragm pumps on the slurry inlet pipe, the slurry conveying pipe, the slurry return pipe and the water return pipe so as to achieve different functions of slurry inlet, slurry conveying, slurry return and the like. The circulating slurry conveying mechanism can be connected with the slurry room and the slurry feeding unit through the small-size slurry barrel and the pipelines respectively, the functions of slurry feeding, slurry conveying, slurry returning, water returning and the like can be achieved by controlling the valves and the diaphragm pumps on the pipelines to be closed, and the problems that an existing slurry conveying mechanism is large in size and occupied area, large in size and low in cost are solved. And the replacement of the slurry and the cleaning of the slurry barrel are difficult.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of slurry feeding mechanism, in particular to a kind of circulating slurry feeding mechanism. BACKGROUND

[0002] With the development of Chinese express business, the demand for packaging materials in packaging industry increases, which drives the development of corrugated paper industry. Corrugated paper is formed by pressing through corrugating machine, and when pressing corrugation, sizing unit is needed to size one side of corrugation, and then glue is used to fix corrugation on face paper.

[0003] A kind of corrugating machine slurry feeding mechanism, including a slurry tank and a sizing unit, wherein the slurry tank is directly sent to the sizing unit by a slurry pipe to size. The traditional slurry feeding mechanism needs to add a large amount of slurry in the slurry tank at one time to meet the requirement of long time operation of the corrugating machine, which leads to the large volume of the slurry tank, the large floor area of the slurry feeding mechanism as a whole, and the difficulty of the whole equipment handling and installation. SUMMARY

[0004] Therefore, the utility model aims to provide a kind of circulating slurry feeding mechanism, which is connected with sizing unit and slurry room through several pipelines, adjusts the amount of slurry in the slurry tank, and reduces the volume of the slurry tank.

[0005] A kind of circulating slurry feeding mechanism, including slurry inlet pipe, slurry tank, slurry pipe, backwater pipe and sizing unit;The first slurry inlet valve and the second slurry inlet valve are arranged on the slurry inlet pipe, and the slurry valve and the first diaphragm pump are arranged on the slurry pipe;The first backwater valve and the second backwater valve are arranged on the backwater pipe;One end of the slurry inlet pipe is connected to the slurry room, and the other end is connected to the slurry tank;One end of the slurry pipe is connected to the slurry tank, and the other end is connected to the sizing unit;One end of the backwater pipe is connected between the first diaphragm pump and the slurry valve, and the other end is connected to the slurry room;A pipeline is further arranged between the first slurry inlet valve and the second slurry inlet valve of the slurry inlet pipe between the first backwater valve and the second backwater valve of the backwater pipe. The slurry stored in the slurry room can be transported to the slurry tank through the slurry inlet pipe, the slurry in the slurry tank can be delivered to the sizing unit through the slurry pipe, the slurry in the slurry tank can be sent back to the slurry room through the slurry pipe, the backwater pipe and the slurry inlet pipe, and the tap water cleaned in the slurry tank can be sent back to the slurry room through the slurry pipe and the backwater pipe.

[0006] Further, an electric control unit is further included, and the electric control unit is electrically connected with the first diaphragm pump, the slurry valve, the first slurry inlet valve, the second slurry inlet valve, the first backwater valve and the second backwater valve. Thus, the opening and closing states of each valve and diaphragm pump are controlled through the set program.

[0007] Further, a high liquid level meter is arranged at an upper position in the slurry tank, and a low liquid level meter is arranged at a lower position; the high liquid level meter and the low liquid level meter are electrically connected to the electric control unit. The electric control unit judges the slurry height in the slurry tank by receiving signals from the high liquid level meter and the low liquid level meter; when the slurry height is higher than the high liquid level meter, the high liquid level meter and the low liquid level meter send signals at the same time, at which time the electric control unit controls the valve and the diaphragm pump to stop feeding slurry; when the slurry height is lower than the high liquid level meter, the high liquid level meter and the low liquid level meter do not send signals at the same time, at which time the electric control unit controls the valve and the diaphragm pump to start feeding slurry.

[0008] Further, a return slurry pipe is further arranged, a second diaphragm pump is arranged on the return slurry pipe, the second diaphragm pump is electrically connected to the electric control unit; one end of the return slurry pipe is connected to the upper slurry unit, and the other end is connected to the slurry tank. The excess slurry in the upper slurry unit will flow through the return slurry pipe, and the second diaphragm pump will pump the slurry back to the slurry tank by pressurization.

[0009] Further, a filter screen is further arranged in the slurry tank, the filter screen divides the slurry tank into a pure part and a contaminated part, the feeding pipe and the feeding pipe are connected to the pure part of the slurry tank, and the return slurry pipe is connected to the contaminated part of the slurry tank. By arranging the filter screen, the impurities such as paper scraps carried by the slurry flowing back from the upper slurry unit are prevented from entering the feeding pipe again.

[0010] Further, when feeding slurry, the first return water valve and the second return water valve are in a closed state, and the second feeding valve and the first feeding valve are in an open state. The slurry in the slurry room enters the slurry tank through the second feeding valve and the first feeding valve of the feeding pipe.

[0011] Further, when feeding slurry, the second return water valve is in a closed state, and the first diaphragm pump and the feeding valve are in an open state. The excess slurry in the upper slurry unit flows into the return slurry pipe and is fed back to the slurry tank.

[0012] Preferably, when feeding slurry, the second return water valve is in a closed state, and the first diaphragm pump, the second diaphragm pump and the feeding valve are in an open state. The excess slurry in the upper slurry unit flows into the return slurry pipe and is pumped back to the slurry tank by the second diaphragm pump.

[0013] Further, when feeding slurry, the feeding valve, the first return water valve and the first feeding valve are in a closed state, and the first diaphragm pump, the second return water valve and the second feeding valve are in an open state. The slurry in the slurry tank is pumped out by the first diaphragm pump of the feeding pipe, and then is fed to the slurry room through the second return water valve of the return water pipe and the second feeding valve of the feeding pipe.

[0014] Further, when backwater, the pulp feeding valve, the first pulp inlet valve and the second pulp inlet valve are in a closed state, and the first diaphragm pump, the second backwater valve and the first backwater valve are in an open state. The tap water in the pulp bucket is pumped out through the first diaphragm pump of the pulp feeding pipe, and then is sent to the pulp house through the second backwater valve and the first backwater valve of the backwater pipe for recycling.

[0015] In order to better understand and implement, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is whole structure schematic diagram of circulating pulp feeding mechanism;

[0017] Figure 2 It is internal structure schematic diagram of pulp bucket;

[0018] Figure 3 It is sectional view schematic diagram of pulp bucket.

[0019] Mark: 10-pulp feeding pipe;12-first pulp inlet valve;14-second pulp inlet valve;20-pulp bucket;22-high liquid level gauge;24-low liquid level gauge;26-filter screen;30-pulp feeding pipe;32-pulp feeding valve;34-first diaphragm pump;40-pulping unit;50-pulp feeding pipe;52-second diaphragm pump;60-backwater pipe;62-first backwater valve;64-second backwater valve;70-electric control unit. DETAILED DESCRIPTION

[0020] The existing pulp feeding mechanism stores pulp liquid in a pulp bucket with a huge volume to supply pulp to the pulping unit of the corrugated machine. The pulp bucket occupies a large area, and the installation and uniform speed of the whole device are difficult. On the other hand, due to the large volume of the pulp bucket, the process of supplementing the pulp liquid in the pulp bucket and moving the pulp liquid in the pulp bucket out of the pulp bucket for storage is very complicated.

[0021] In view of these problems, the utility model provides a new circulating pulp feeding mechanism. By using a pulp bucket with a small volume, a pulp feeding pipe connected between the pulp house and the pulp feeding unit, and valves controlled by the electric control unit, the circulating supplement of the pulp liquid in the pulp bucket can be realized, and the pulp feeding unit can be continuously supplied with pulp.

[0022] The scheme of the circulating pulp feeding mechanism designed by the utility model is described in detail below with reference to the drawings.

[0023] Please refer to Figure 1The utility model discloses a circulating pulp feeding mechanism, which comprises a pulp feeding pipe 10, a pulp bucket 20, a pulp feeding pipe 30, a sizing unit 40, a pulp returning pipe 50, a water returning pipe 60 and an electric control unit 70.

[0024] The pulp feeding pipe 10 is provided with a first pulp feeding valve 12 and a second pulp feeding valve 14. One end of the pulp feeding pipe 10 is connected to the upper part of the pulp bucket 20, and the other end is connected to the pulp house in sequence through the first pulp feeding valve 12 and the second pulp feeding valve 14. The pulp liquid in the pulp house can enter the pulp bucket 20 through the pulp feeding pipe 10. The pulp feeding pipe 30 is provided with a pulp feeding valve 32 and a first diaphragm pump 34. One end of the pulp feeding pipe 30 is connected to the lower part of the pulp bucket 20, and the other end is connected to the sizing unit 40 in sequence through the first diaphragm pump 34 and the pulp feeding valve 32. The first diaphragm pump 34 pumps the pulp liquid in the pulp bucket 20 out through the pulp feeding pipe 30 and delivers it to the sizing unit 40. The pulp returning pipe 50 is provided with a second diaphragm pump 52. One end of the pulp returning pipe 50 is connected to the sizing unit 40, and the other end is connected to the upper part of the pulp bucket through the second diaphragm pump 52. The pulp returning pipe 50 receives the excess pulp liquid of the sizing unit 40 and pumps the pulp liquid in the pulp returning pipe 50 out to the pulp bucket 20 through the second diaphragm pump 52.

[0025] The water returning pipe 60 is also provided with a first water returning valve 62 and a second water returning valve 64. One end of the water returning pipe 60 is connected between the pulp feeding valve 32 and the first diaphragm pump 34 of the pulp feeding pipe 30, and the other end is connected to the pulp house through the first water returning valve 32 and the second water returning valve 64 respectively. Meanwhile, the water returning pipe 60 extends a pipeline between the first water returning valve 62 and the second water returning valve 64 to the pulp house between the first pulp feeding valve 12 and the second pulp feeding valve 14 of the pulp feeding pipe 10.

[0026] Please refer to Figure 2 The pulp bucket 20 is provided with a high liquid level meter 22 and a low liquid level meter 24. The high liquid level meter 22 is arranged at the upper position of the pulp bucket 20, and the low liquid level meter 24 is arranged at the lower position of the pulp bucket 20. When the height of the pulp liquid in the pulp bucket 20 reaches the height of the high liquid level meter 22, the high liquid level meter 22 sends a signal. When the height of the pulp liquid is lower than the height of the low liquid level meter 24, the low liquid level meter 24 stops sending a signal.

[0027] In particular, the pulp bucket 20 is further provided with a filter screen 26, which divides the interior of the pulp bucket into a clean part and a contaminated part, the pulp inlet pipe 10 and the pulp feeding pipe 30 are arranged in the clean part of the pulp bucket, and the pulp return pipe 60 is arranged in the contaminated part of the pulp bucket, so as to prevent the paper scraps and impurities possibly contained in the pulp liquid brought back by the upper unit 40 from entering the pulp feeding pipe 30 again.

[0028] The electric control unit 70 is electrically connected with the first diaphragm pump 34, the second diaphragm pump 52, the first pulp inlet valve 12, the second pulp inlet valve 14, the pulp feeding valve 32, the first water return valve 62, the second water return valve 64, the high liquid level meter 22 and the low liquid level meter 24, and the control table of the diaphragm pumps and the valves during pulp feeding, pulp feeding, pulp returning and water returning is shown in the following table.

[0029]

[0030] During pulp feeding, the first water return valve 62 and the second water return valve 64 are closed, and the pulp liquid in the pulp room enters the pulp bucket 20 through the second pulp inlet valve 14 and the first pulp inlet valve 12 of the pulp inlet pipe 10.

[0031] During pulp feeding, the second water return valve 64 is closed, the pulp liquid in the pulp bucket 20 is pumped out through the first diaphragm pump 34 of the pulp feeding pipe 30 and then is sent to the upper unit 40 through the pulp feeding valve 32, and the excess pulp liquid in the upper unit 40 flows into the pulp return pipe 50 and is pumped back to the pulp bucket 20 through the second diaphragm pump 52.

[0032] During pulp returning, the pulp feeding valve 32, the first water return valve 62 and the first pulp inlet valve 12 are closed, the pulp liquid in the pulp bucket 20 is pumped out through the first diaphragm pump 34 of the pulp feeding pipe 30 and then is sent to the pulp room through the second water return valve 64 of the water return pipe and the second pulp inlet valve 14 of the pulp inlet pipe.

[0033] After the pulp returning is completed, the pulp bucket 20 is cleaned with tap water, and then water returning is performed. The pulp feeding valve 32, the first pulp inlet valve 12 and the second pulp inlet valve 14 are closed, the tap water in the pulp bucket 20 is pumped out through the first diaphragm pump 34 of the pulp feeding pipe 30 and then is sent to the pulp room through the second water return valve 64 and the first water return valve 62 of the water return pipe to be reused.

[0034] Compared with the prior art, the circulating pulp feeding mechanism can realize the functions of pulp feeding, pulp feeding, pulp returning and water returning by connecting the small-volume pulp bucket with the pulp room and the upper unit through a plurality of pipes and closing the valves and diaphragm pumps on the pipes, and solves the problems that the existing pulp feeding mechanism has a large size and occupies a large area, and it is difficult to replace the pulp liquid and clean the pulp bucket.

[0035] The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the description of the application and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It also will be understood that "multiple" refers to two or more, unless otherwise indicated. The terms "first", "second", "third", etc. are used merely as labels, and are not intended to signify relative importance or a particular order of sequence and precedence, except where clearly indicated by context. The term "and / or" used in the present document comprises any or all possible combinations of one or more associated listed items. The above description refers to the accompanying drawings, which show, by way of example, the principles of the application. The same reference numbers in different drawings identify the same or similar elements. The specific terms used in the description of the application are understood by those of ordinary skill in the art in the light of the specific context.

[0036] The above-described embodiments are merely illustrative of the present application and do not limit the scope of the patent. It should be noted that, for those of ordinary skill in the art, certain modifications and improvements can be made to the present application without departing from the concept of the present application, and these modifications and improvements shall fall within the scope of the present application.

Claims

1. A circulating pulp feeding mechanism, characterized by: The application relates to a slurry feeding device, which comprises a slurry inlet pipe, a slurry barrel, a slurry feeding pipe, a water return pipe and a slurry feeding unit; first and second slurry inlet valves are arranged on the slurry inlet pipe; a slurry feeding valve and a first diaphragm pump are arranged on the slurry feeding pipe; first and second water return valves are arranged on the water return pipe; the slurry inlet pipe is connected between a slurry room and the slurry barrel; the slurry feeding pipe is connected between the slurry barrel and the slurry feeding unit; one end of the water return pipe is connected between the first diaphragm pump and the slurry feeding valve, and the other end is connected to the slurry room; a pipe is further arranged between the first and second slurry inlet valves of the slurry inlet pipe.

2. The circulation dosing mechanism according to claim 1, characterized in that: The device further comprises an electric control unit, which is electrically connected to the first diaphragm pump, the slurry feeding valve, the first and second slurry inlet valves, the first and second water return valves.

3. The circulation dosing mechanism according to claim 2, characterized in that: A high liquid level meter is arranged at an upper position in the slurry barrel, and a low liquid level meter is arranged at a lower position in the slurry barrel; the high and low liquid level meters are electrically connected to the electric control unit.

4. The circulation dosing mechanism according to claim 3, characterized in that: The device further comprises a slurry return pipe, which is provided with a second diaphragm pump and is electrically connected to the electric control unit; one end of the slurry return pipe is connected to the slurry feeding unit, and the other end is connected to the slurry barrel.

5. The circulation dosing mechanism according to claim 4, characterized in that: A filter screen is further arranged in the slurry barrel, which divides the slurry barrel into a pure part and a contaminated part; the slurry inlet pipe and the slurry feeding pipe are connected to the pure part of the slurry barrel, and the slurry return pipe is connected to the contaminated part of the slurry barrel.

6. A circulation dosing mechanism according to any one of claims 1-5, characterized in that: When the slurry is fed, the first and second water return valves are in a closed state, and the second and first slurry inlet valves are in an open state.

7. The circulation dosing mechanism according to any one of claims 1 to 3, characterized in that: When the slurry is fed, the second water return valve is in a closed state, and the first diaphragm pump and the slurry feeding valve are in an open state.

8. The circulation dosing mechanism according to any one of claims 4-5, characterized in that: When the slurry is fed, the second water return valve is in a closed state, and the first diaphragm pump, the second diaphragm pump and the slurry feeding valve are in an open state.

9. The circulation dosing mechanism according to any one of claims 1-5, characterized in that: When the slurry is returned, the slurry feeding valve, the first water return valve and the first slurry inlet valve are in a closed state, and the first diaphragm pump, the second water return valve and the second slurry inlet valve are in an open state.

10. The circulation dosing mechanism according to any one of claims 1-5, characterized in that: When the water is returned, the slurry feeding valve, the first slurry inlet valve and the second slurry inlet valve are in a closed state, and the first diaphragm pump, the second water return valve and the first water return valve are in an open state.

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