Deslagging device for low-concentration paper pulp

Abstract

The slag removal device comprises a slag removal box, the interior of the slag removal box is divided into a discharging cavity and a feeding cavity which are located on the left side and the right side respectively through a partition plate which is vertically arranged, the upper end of the feeding cavity is connected with a feeding pipe, the lower end of the discharging cavity is connected with a discharging pipe, and a through hole is formed in the partition plate. A screen is installed in the through hole, the lower end of the screen is arranged close to the bottom of the slag removal box, a vertically-arranged air cylinder is installed at the upper end of the slag removal box, a telescopic rod of the air cylinder extends downwards into the feeding cavity, a brush attached to the screen is fixedly installed at the lower end of the telescopic rod of the air cylinder, and the width of the brush is not smaller than that of the screen, so that the filtering efficiency of the screen is guaranteed; meanwhile, the concentration of paper pulp is not changed.

Description

Technical Field

[0001] The utility model relates to the technical field of pulp slag removal, and particularly relates to a slag removal device for low-concentration pulp. Background Art

[0002] In the recycling of cardboard, after the cardboard is prepared into pulp, some fixed residues will remain in the pulp and need to be removed.

[0003] In the utility model of "a regenerated pulp slag removal and filtration device" with the patent number "CN216170450U", it is disclosed that: including a processing box, the top of the processing box is provided with a box cover, the bottom is provided with support legs, the top of the box cover is provided with a driving motor, one side of the driving motor is provided with a pulp inlet pipe, the other side is provided with a water inlet pipe, the driving motor is provided with an output shaft I, the bottom end of the output shaft I is connected to a hollow shaft, the bottom end of the hollow shaft is provided with stirring blades, the processing box is provided with upper and lower two layers of filter nets, the bottom end of the filter net is provided with a fixing block, each layer of the top of the filter net is provided with a brush and a water spray pipe, the bottom end of the water spray pipe is evenly provided with a number of high-pressure nozzles, one side of the bottom end of the processing box is provided with a pulp discharge pipe, the bottom end of the processing box is provided with a double-shaft motor, both sides of the double-shaft motor are provided with output shafts II, the output shafts II are provided with cams, the top of the cam is provided with a fixing column, and the bottom end of the fixing column is provided with a roller. The utility model has reasonable design, simple operation, effectively prevents the blockage of the filter net, has good slag removal effect and is practical.

[0004] In the above patent, although the blockage of the filter net can be prevented, since the filter net is flushed by the water spray pipe during filtration, the clear water used for flushing will be mixed into the pulp, resulting in a decrease in the concentration of the filtered pulp. Utility Model Content

[0005] In order to solve the deficiencies in the above-mentioned prior art, the utility model provides a slag removal device for low-concentration pulp.

[0006] In order to achieve the above technical effects, the utility model adopts the following scheme:

[0007] A slag removal device for low-concentration pulp, including a slag removal box, the inside of the slag removal box is divided into a discharge chamber and a feed chamber located on the left and right sides respectively by a vertically arranged partition plate, the upper end of the feed chamber is connected with a feed pipe, the lower end of the discharge chamber is connected with a discharge pipe, the partition plate is provided with a through hole, a screen is installed in the through hole, the lower end of the screen is arranged close to the bottom of the slag removal box, the upper end of the slag removal box is installed with a vertically arranged cylinder, the telescopic rod of the cylinder extends downward into the feed chamber, and the lower end of the telescopic rod of the cylinder is fixedly installed with a brush attached to the screen, and the width of the brush is not less than the width of the screen.

[0008] In a preferred technical solution, the bottom of the feed chamber is recessed downward to form a sedimentation box, and a sewage outlet is provided at the lower end of the sedimentation box, and a valve is provided at the sewage outlet.

[0009] In a preferred technical solution, a closing plate is preferably provided at the connection between the feed chamber and the sedimentation box. One side of the closing plate is fixedly connected to a rotating shaft rotatably connected to the sedimentation box, and the rotating shaft is driven to rotate by a motor located on the outer wall of the sedimentation box.

[0010] In a preferred technical solution, a spray head facing the screen is installed at the top of the discharge chamber, and the spray head is connected to a water supply pipe.

[0011] In a preferred technical solution, a slurry feeding and pressurizing pump is installed on the feed pipe.

[0012] Compared with the prior art, the beneficial effects are as follows:

[0013] The utility model has a simple structure and is convenient to use. The pulp to be filtered is sent into the feed chamber through the feed pipe, filtered by the laterally arranged screen, enters the discharge chamber and is discharged by the discharge pipe. Since the screen is arranged laterally, the solid residues will fall under the action of their own gravity, reducing the amount of adhesion on the screen and lowering the probability of screen blockage. After filtering for a period of time, the brush is pushed by the cylinder to move on the screen to clean the residues attached to the screen, thus ensuring the filtering efficiency of the screen and not changing the concentration of the pulp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic cross-sectional view of the utility model.

[0015] Reference numerals: 1, slag removal box; 2, partition plate; 3, feed chamber; 4, discharge chamber; 5, feed pipe; 6, discharge pipe; 7, screen; 8, cylinder; 9, brush; 10, sedimentation box; 11, mist discharge port; 12, closing plate; 13, slurry feeding and pressurizing pump; 14, spray head. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.

[0017] A slag removal device for low-concentration pulp, comprising a slag removal box 1. The slag removal box 1 is divided into a discharge chamber 4 and a feed chamber 3 located on the left and right sides respectively by a vertically arranged partition plate 2. The upper end of the feed chamber 3 is connected to a feed pipe 5, and the lower end of the discharge chamber 4 is connected to a discharge pipe. The partition plate 2 is provided with through holes, and a screen 7 is installed in the through holes. The lower end of the screen 7 is arranged close to the bottom of the slag removal box 1. A vertically arranged cylinder 8 is installed at the upper end of the slag removal box 1. The telescopic rod of the cylinder 8 extends downward into the feed chamber 3, and a brush 9 attached to the screen 7 is fixedly installed at the lower end of the telescopic rod of the cylinder 8. The width of the brush 9 is not less than the width of the screen 7.

[0018] The pulp to be filtered is sent into the feed chamber 3 through the feed pipe 5, and after being filtered by the vertically arranged screen 7, it enters the discharge chamber 4 and is discharged through the discharge pipe. Since the screen 7 is vertically arranged, the solid residues will fall under the action of their own gravity, reducing the amount of adhesion on the screen 7 and lowering the probability of blockage of the screen 7. After filtering for a period of time, the brush 9 is pushed by the cylinder 8 to move on the screen 7 to clean the residues attached to the screen 7, thus ensuring the filtering efficiency of the screen 7 and not changing the concentration of the pulp at the same time.

[0019] In a preferred technical solution, the bottom of the feed chamber 3 is recessed downward to form a sediment box 10. The lower end of the sediment box 10 is provided with a sewage outlet, and a valve is provided at the sewage outlet.

[0020] The residues that fall by their own gravity and are brushed off by the brush 9 fall into the sediment box 10 for sedimentation, and the valve is opened to discharge them after a period of time.

[0021] In a preferred technical solution, a closing plate 12 is preferably provided at the connection between the feed chamber 3 and the sediment box 10. One side of the closing plate 12 is fixedly connected to a rotating shaft rotatably connected to the sediment box 10, and the rotating shaft is driven to rotate by a motor located on the outer wall of the sediment box 10.

[0022] The motor drives the closing plate 12 to rotate, and when needed, the connection between the feed chamber 3 and the sediment box 10 is closed by the closing plate 12.

[0023] In a preferred technical solution, a spray head 14 facing the screen 7 is installed at the top of the discharge chamber 4, and the spray head 14 is connected to a water supply pipe.

[0024] After the filtering is completed, the screen 7 is rinsed through the spray head 14. Since the residues are mainly attached to the side of the screen 7 located in the feed chamber 3, the spray head 14 rinses the screen 7 in the discharge chamber 4 in the reverse direction, making it easier to wash off the residues attached to the screen 7.

[0025] In a preferred technical solution, a pulp feeding pressurizing pump 13 is installed on the feed pipe 5.

[0026] Pressurize through the pulp feeding and pressurizing pump 13 to increase the pressure in the feeding chamber 3, promote the pulp in the feeding chamber 3 to pass through the screen 7 to the discharging chamber 4, and improve the filtration efficiency.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0028] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0029] All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the scope of protection of the present utility model.

Claims

1. A dross removal device for low-concentration pulp, characterized in that, It includes a slag removal tank (1). Inside the slag removal tank (1), a vertically arranged partition plate (2) divides it into a discharge chamber (4) and a feed chamber (3) located on the left and right sides respectively. The upper end of the feed chamber (3) is connected to a feed pipe (5), and the lower end of the discharge chamber (4) is connected to a discharge pipe. Through holes are formed in the partition plate (2), and a screen (7) is installed in the through holes. The lower end of the screen (7) is arranged close to the bottom of the slag removal tank (1). A vertically arranged cylinder (8) is installed at the upper end of the slag removal tank (1). The telescopic rod of the cylinder (8) extends downward into the feed chamber (3), and a brush (9) attached to the screen (7) is fixedly installed at the lower end of the telescopic rod of the cylinder (8). The width of the brush (9) is not less than the width of the screen (7).

2. The dross removing device for low-concentration pulp according to claim 1, wherein, The bottom of the feed chamber (3) is recessed downward to form a sediment box (10). A sewage outlet is provided at the lower end of the sediment box (10), and a valve is provided at the sewage outlet.

3. The dross removing device for low-concentration pulp according to claim 2, characterized in that, A closing plate (12) is arranged in a matching manner at the connection between the feed chamber (3) and the sediment box (10). One side of the closing plate (12) is fixedly connected to a rotating shaft rotatably connected to the sediment box (10), and the rotating shaft is driven to rotate by a motor located on the outer wall of the sediment box (10).

4. The dross removing device for low-concentration pulp according to claim 2, characterized in that, A spray head (14) facing the screen (7) is installed at the top of the discharge chamber (4), and the spray head (14) is connected to a water supply pipe.

5. The dross removing device for low-concentration pulp according to claim 1, characterized in that, A slurry feeding and pressurizing pump (13) is installed on the feed pipe (5).

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