Deslagging system of paper machine

Abstract

The utility model relates to the technical field of pulping treatment, in particular to a slag removal system of a paper machine. Comprising a water tank communicated with five sections of slag slurry pipes, a dilution assembly is arranged at the lower end in the water tank and communicated with a clear filtrate pipe, a high-pressure pump is installed on the clear filtrate pipe, an outlet of the water tank is communicated with an outlet pipe, the outlet pipe is communicated with an inlet of a slag separator, the clear filtrate pipe is communicated with an inlet pipe, and the inlet pipe is communicated with a flushing pipeline of the slag separator. A pulp outlet pipe of the slag separator is communicated with the pulp flowing box, and a slag outlet pipe of the slag separator is communicated with the jumping screen. According to the system, the residue pulp of the fifth residue removal section is placed in the water tank to be stored, the residue remover is additionally arranged to remove residues of the residue pulp in the water tank, accepted pulp discharged by the residue remover enters the papermaking system, and pulp residues discharged by the residue remover are further subjected to liquid removal through the jumping screen, so that the pulp residues are conveniently analyzed, and the working state of the impurity removal section of the pulping system is judged.

Description

Technical Field

[0001] This utility model relates to the field of pulping and processing technology, specifically to a paper machine slag removal system. Background Technology

[0002] During production, the tailings discharged from the five-stage desander on the paper machine are directly sent to the drainage ditch, preventing the recycling of some high-quality pulp and increasing production costs. When cleaning the ditch, a significant amount of settled high-quality pulp is found. To avoid waste, this pulp needs to be processed and transferred back to the paper machine for papermaking. However, transferring the pulp from the ditch requires substantial manpower, is inefficient, and poses safety hazards.

[0003] To improve pulp quality, it is necessary to analyze the pulp residue at the end of the system and examine the classification of impurities. This classification provides valuable insight into the operational status of the impurity removal section within the pulping system. If the pulp residue contains a large amount of iron impurities, it indicates low iron removal efficiency in the iron removal section, requiring timely maintenance. However, current technologies often present a large amount of good pulp residue at the end of the pulping process, making analysis difficult.

[0004] The patent document with publication number CN220266175U discloses a slurry production system. In this system, the slurry residue after being processed by a first slag remover, a second slag remover, and a third slag remover is temporarily stored. This system cannot effectively treat the slurry residue at the end of the system. Utility Model Content

[0005] The main purpose of this invention is to provide a paper machine deslagging system that can avoid resource waste, reduce production costs, and facilitate the analysis of end-of-pipe pulp residue.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows:

[0007] A paper machine descaling system includes a water tank connected to five slurry pipes. A dilution component is installed at the lower end of the water tank. The dilution component is connected to a filtrate pipe. A high-pressure pump is installed on the filtrate pipe. The outlet of the water tank is connected to an outlet pipe, which is connected to the inlet of a descaling device. The filtrate pipe is connected to an inlet pipe, which is connected to the flushing pipe of the descaling device. The slurry outlet pipe of the descaling device is connected to the headbox, and the slag outlet pipe of the descaling device is connected to a skip screen.

[0008] Specifically, a delivery pump is installed on the outlet pipe.

[0009] Specifically, a liquid pump is installed on the inlet pipe.

[0010] Specifically, the dilution assembly includes a dispensing tray fixed at the lower end of the water tank, multiple diluents fixed at the upper end of the dispensing tray, the interior of the diluents being connected to the interior of the dispensing tray, and a filter pipe being connected to the interior of the dispensing tray.

[0011] Specifically, the diluent includes a vertically arranged fixed tube that is connected to the inside of the liquid distribution tray. The upper end of the fixed tube is sealed, and multiple outlet holes are evenly distributed around the circumference of the fixed tube. An inner tube is elastically and slidably sealed in the axial direction inside the fixed tube. The upper end of the inner tube is sealed, and the lower end of the inner tube is connected to the inside of the fixed tube. Through holes are opened on the inner tube below the outlet holes.

[0012] Specifically, a square rod is concentrically fixed at the upper end of the inner tube, the square rod passes through the square hole at the upper end of the inner tube, and the square rod is slidably and sealingly connected to the upper end of the inner tube.

[0013] Specifically, the upper end of the fixed tube is connected to the upper end of the inner tube by a spring, and the square rod passes through the spring.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This system stores the slurry from the fifth slag removal section in a water tank and adds a slag remover to remove slag from the slurry in the water tank. The good slurry discharged from the slag remover enters the papermaking system. The slag discharged from the slag remover is further de-liquidated by a skip screen, which facilitates the analysis of the slag and the determination of the working status of the impurity removal section of the pulping system.

[0016] 2. By setting up a dilution component, the high-pressure filtrate and the dilution component work together to easily dilute the sediment in the tank. The tank does not need to be equipped with a stirring component, which can improve the uniformity of the slurry in the tank. The equipment has low cost and is easy to maintain.

[0017] 3. After the high-pressure filtrate enters the fixed tube, it causes the inner tube to rise. After the inner tube rises, the outlet and through hole are connected. The high-pressure filtrate can be discharged through the through hole and outlet and impact the sediment in the water tank. After the pressure of the high-pressure filtrate decreases, the inner tube moves downward in the fixed tube. The outlet and through hole are misaligned, which can prevent slurry from entering the fixed tube and inner tube and prevent the fixed tube and inner tube from being blocked. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the system.

[0019] Figure 2 This is a schematic diagram of the dilution component.

[0020] Figure 3 This is a schematic diagram of a diluent.

[0021] Figure 4 This is a cross-sectional view of the diluent.

[0022] The components in the attached diagram are named as follows: 1. Five-section slurry pipe; 2. Water tank; 3. Filter liquid pipe; 4. High-pressure pump; 5. Inlet pipe; 6. Liquid pump; 7. Flushing pipe; 8. Outlet pipe; 9. Conveying pump; 10. Slurry outlet pipe; 11. Slag outlet pipe; 12. Skipping screen; 13. Slag remover; 21. Liquid distribution plate; 22. Diluter; 221. Fixed pipe; 222. Outlet hole; 223. Inner pipe; 224. Through hole; 225. Square rod; 226. Spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Example 1: Refer to Figure 1 As shown, a paper machine slag removal system includes a water tank 2 connected to a five-section slag pipe 1. A dilution component is installed at the lower end of the water tank 2. The dilution component is connected to a filtrate pipe 3. A high-pressure pump 4 is installed on the filtrate pipe 3.

[0025] The outlet of water tank 2 is connected to outlet pipe 8, on which a delivery pump 9 is installed. Outlet pipe 8 is connected to the inlet of slag remover 13, and filtrate pipe 3 is connected to inlet pipe 5. Inlet pipe 5 is connected to flushing pipe 7 of slag remover 13, on which a liquid pump 6 is installed. Slurry outlet pipe 10 of slag remover 13 is connected to headbox. Slag outlet pipe 11 of slag remover 13 is connected to skip screen 12.

[0026] This system transports the slurry from the fifth slag removal section to the water tank 2 for storage, and adds a slag remover 13 to remove slag from the slurry in the water tank 2. The good slurry discharged from the slag remover 13 enters the papermaking system, which can avoid resource waste.

[0027] The pulp residue discharged from the slag remover 13 is further deliquescent through the jumping screen 12, which facilitates the analysis of the pulp residue and the determination of the working status of the impurity removal section of the pulping system.

[0028] With this system, the slurry from the fifth slag removal section does not need to be discharged into the ditch for storage, and the good slurry in the fifth slag removal section can be effectively reused, which can reduce production costs.

[0029] Example 2: Based on Example 1, referring to... Figures 2-4 As shown, the dilution assembly includes a liquid distribution plate 21 fixed inside the lower end of the water tank 2, and multiple diluents 22 fixed on the upper end of the liquid distribution plate 21. The interior of the diluents 22 is connected to the interior of the liquid distribution plate 21, and the filter pipe 3 is connected to the interior of the liquid distribution plate 21.

[0030] The diluter 22 includes a vertically arranged fixed tube 221, which is connected to the inside of the liquid distribution tray 21. The upper end of the fixed tube 221 is sealed, and multiple outlet holes 222 are evenly distributed around the circumference of the fixed tube 221. An inner tube 223 is elastically and slidably sealed in the axial direction inside the fixed tube 221. The upper end of the inner tube 223 is sealed, and the lower end of the inner tube 223 is connected to the inside of the fixed tube 221. Through holes 224 are opened on the inner tube 223 below the outlet holes 222.

[0031] A square rod 225 is concentrically fixed at the upper end of the inner tube 221. The square rod 225 passes through the square hole at the upper end of the inner tube 223, and the square rod 225 is slidably and sealingly connected to the upper end of the inner tube 223. The upper end of the fixed tube 221 is connected to the upper end of the inner tube 223 by a spring 226, and the square rod 225 passes through the spring 226.

[0032] When diluting the slurry settled in the water tank 2, the high-pressure pump 4 is started. The high-pressure pump 4 delivers the filtered liquid under high pressure to the distribution plate 21. The high-pressure filtered liquid in the distribution plate 21 can push the inner tube 223 upward in the fixed tube 221 and squeeze the spring 226. When the through hole 224 is connected to the outlet hole 222, the high-pressure filtered liquid can be sprayed out through the through hole 224 and the outlet hole 222 and impact the slurry settled in the water tank 2, which can stir the slurry in the water tank 2 and improve the uniformity of the slurry in the water tank 2.

[0033] Start the delivery pump 9 to transport the slurry in the water tank 2 to the sludge remover 13 through the outlet pipe 8. Start the liquid pump 6, which can send the filtrate through the flushing pipe 7 into the sludge remover 13 to further dilute the slurry entering the sludge remover 13.

[0034] After the pressure of the high-pressure filtrate decreases, the inner tube 223 moves downward in the fixed tube 221, and the outlet 222 and the through hole 224 are misaligned, which can prevent slurry from entering the fixed tube 221 and the inner tube 223 and prevent the fixed tube 221 and the inner tube 223 from becoming blocked.

[0035] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A paper machine slag removal system, comprising a water tank (2) connected to a five-section slag pipe (1), characterized in that, A dilution component is installed at the lower end of the water tank (2). The dilution component is connected to the filtrate pipe (3). A high-pressure pump (4) is installed on the filtrate pipe (3). The outlet of the water tank (2) is connected to the outlet pipe (8). The outlet pipe (8) is connected to the inlet of the slag remover (13). The filtrate pipe (3) is connected to the inlet pipe (5). The inlet pipe (5) is connected to the flushing pipe (7) of the slag remover (13). The slurry outlet pipe (10) of the slag remover (13) is connected to the headbox. The slag outlet pipe (11) of the slag remover (13) is connected to the skip screen (12).

2. The paper machine slag removal system according to claim 1, characterized in that, A delivery pump (9) is installed on the outlet pipe (8).

3. The paper machine slag removal system according to claim 1, characterized in that, A liquid pump (6) is installed on the inlet pipe (5).

4. The paper machine slag removal system according to claim 1, characterized in that, The dilution assembly includes a dispensing plate (21) fixed inside the lower end of the water tank (2), and multiple diluents (22) fixed on the upper end of the dispensing plate (21). The interior of the diluents (22) is connected to the interior of the dispensing plate (21), and the filter pipe (3) is connected to the interior of the dispensing plate (21).

5. The paper machine slag removal system according to claim 4, characterized in that, The diluter (22) includes a vertically arranged fixed tube (221), which is connected to the inside of the liquid distribution plate (21). The upper end of the fixed tube (221) is sealed, and multiple outlet holes (222) are evenly distributed around the circumference of the fixed tube (221). An inner tube (223) is elastically and slidably sealed in the axial direction inside the fixed tube (221). The upper end of the inner tube (223) is sealed, and the lower end of the inner tube (223) is connected to the inside of the fixed tube (221). Through holes (224) are opened on the inner tube (223) below the outlet holes (222).

6. The paper machine slag removal system according to claim 5, characterized in that, A square rod (225) is concentrically fixed at the upper end of the inner tube (221). The square rod (225) passes through the square hole at the upper end of the inner tube (223). The square rod (225) is slidably and sealed to the upper end of the inner tube (223).

7. The paper machine slag removal system according to claim 6, characterized in that, The upper end of the fixed tube (221) is connected to the upper end of the inner tube (223) by a spring (226), and the square rod (225) passes through the spring (226).

Images