Improved deslagging device for papermaking

Abstract

The utility model discloses an improved deslagging device for papermaking, which comprises a deslagging device, a suction pipe and an accepted pulp output pipe, a separation cavity is arranged in the deslagging device, and one side of the deslagging device is tangent to and communicated with a pulp inlet pipe; the suction pipe is arranged at the top of the slag separator and is inserted into the separation cavity; the accepted pulp output pipe is arranged at the top of the slag separator and is communicated with the separation cavity; wherein the inner cavity structure of the separation cavity comprises an annular surface wall body and a square surface wall body which are connected in sequence, and is used for gradually reducing the rotating speed of the slag slurry so as to reduce the abrasion of the slag slurry to the cylinder wall of the separation cavity; the annular surface wall body and the square surface wall body are reasonably matched and are sequentially arranged to form a structure with a round upper part and a round lower part, and the structure can effectively guide slag slurry to flow, so that the centrifugal force is gradually reduced, the rotating speed of the slag slurry is gradually reduced, and the slag slurry is prevented from rotating along with the reduction of the rotating speed of the slag slurry. The erosive wear to the barrel wall of the separation cavity is also weakened, the service life of the equipment is prolonged, and meanwhile, the operation stability is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to papermaking equipment field especially, a kind of improved papermaking is used to remove slag device. BACKGROUND

[0002] In the papermaking production process, coarse slag, floating slurry and waste gas and other impurities will inevitably be produced. Due to the long production process, involving multiple pipelines and multiple slurry storage tanks, the existence of these impurities not only affects the pulp quality, but also may cause paper disease. In view of these problems, the current papermaking industry usually uses light and heavy impurity slag removal device for separation and removal. This kind of slag removal device mainly relies on the separation of light impurities in the pulp flow after crossing the pulp flow into the air core area. However, due to the extremely short residence time of floating slurry and waste gas in the rising pulp flow, they are easily mixed into the good pulp, making it difficult for the existing light and heavy impurity slag removal device to completely remove the floating slurry and waste gas.

[0003] Chinese utility model patent CN214572952U discloses a slag removal device for papermaking, which comprises a slag removal device and a pulp inlet pipe. The pulp inlet pipe is tangentially connected to the slag removal device. In addition, the device is also provided with a suction pipe, one end of which is inserted into the top of the separation chamber, and the end extends to the floating impurity area in the middle of the separation chamber. Under the action of negative pressure, the suction pipe can effectively remove the separated floating slurry, thereby improving the removal effect of light impurities. However, the slag removal device disclosed in this patent adopts an annular inner wall design, which causes the slag pulp to rub against the annular inner wall under the action of centrifugal force, causing wear and even wear of the cylinder wall after long-term operation, especially at the welding joint of the slag discharge port and the horizontal slag discharge pipe. The wear problem is particularly prominent, which seriously affects the service life and running stability of the slag removal device. Therefore, there is an urgent need for an improved papermaking slag removal device. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide an improved papermaking slag removal device to solve the above-mentioned problems.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0006] The present application provides an improved papermaking slag removal device, comprising:

[0007] The slag removal device is internally provided with a separation chamber and a pulp inlet pipe tangentially connected thereto;

[0008] A suction pipe is provided at the top of the slag removal device and inserted into the separation chamber. One end of the suction pipe extends to the floating slag area in the middle of the separation chamber.

[0009] A good pulp output pipe is provided at the top of the slag removal device and is in communication with the separation chamber.

[0010] The inner cavity structure of the separation cavity comprises annular surface wall bodies and square surface wall bodies connected in sequence, which are used for gradually reducing the rotation speed of the slag slurry to reduce the abrasion of the slag slurry to the cylinder wall of the separation cavity.

[0011] In a possible implementation, the caliber of the annular surface wall bodies and the square surface wall bodies gradually decreases from top to bottom.

[0012] In a possible implementation, the bottom of the square surface wall body is a rectangular bottom surface.

[0013] In a possible implementation, the rectangular bottom surface is provided with a discharge port for discharging the coarse slag, and the discharge port is in communication with the separation cavity.

[0014] In a possible implementation, the bottom of the discharge port is provided with a negative pressure collection pipe in communication with the discharge port.

[0015] In a possible implementation, the middle top of the slag remover is provided with a connecting portion, and one end of the good slurry output pipe is communicated to the connecting portion to guide the good slurry in the good slurry area inside the separation cavity.

[0016] In a possible implementation, one end of the suction pipe is inserted into the connecting portion and extends into the scum area in the middle of the separation cavity.

[0017] As described above, the present application has the following advantages:

[0018] In the present application, the annular surface wall bodies and the square surface wall bodies are reasonably matched, and are sequentially arranged to form a structure with a circular top and a square bottom. The structure can effectively guide the flow of the slag slurry, gradually reduce the centrifugal force, and gradually reduce the rotation speed of the slag slurry. With the reduction of the rotation speed of the slag slurry, the erosion and abrasion of the cylinder wall of the separation cavity are also reduced, the service life of the equipment is improved, and the operation stability is enhanced. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structural schematic diagram of the present application;

[0020] Figure 2 FIG. 2 is a schematic diagram of the internal structure of the separation cavity in the present application.

[0021] Markings in the figure:

[0022] 1, slag remover; 101, separation cavity; 102, annular surface wall body; 103, square surface wall body; 104, rectangular bottom surface; 105, connecting portion;

[0023] 2, pulp inlet pipe; 3, suction pipe; 4, good pulp outlet pipe; 5, discharge port; 6, negative pressure collection pipe. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0025] First, use Figure 1 The overall structure of the improved papermaking residue removal device is described, Figure 1 The structure diagram of the present application. The improved papermaking residue removal device comprises a residue removal device 1, a pulp inlet pipe 2, a suction pipe 3 and a good pulp outlet pipe 4, wherein:

[0026] The inside of the residue removal device 1 is provided with a separation cavity 101, and one side of the residue removal device 1 is tangent to and communicates with the pulp inlet pipe 2. After the paper pulp to be separated from impurities such as coarse residue and floating pulp enters the inside of the separation cavity 101 of the residue removal device 1 in a tangent direction, the pulp flow moves in a vortex, and moves downward along the cone of the residue removal device 1 in a spiral shape. The vortex flow generates a centrifugal force. Under the action of the centrifugal force, the heavier coarse residue is thrown to the side wall of the residue removal device 1, forming a coarse residue area.

[0027] The lighter floating pulp, waste gas and other light impurities are concentrated at the center position, forming a floating residue area. The good pulp area is between the coarse residue area and the floating residue area, thereby achieving the purpose of separating the floating pulp, the coarse residue and the good pulp.

[0028] The suction pipe 3 is arranged at the top of the residue removal device 1, and the suction pipe 3 is inserted into the separation cavity 101. One end of the suction pipe 3 extends to the floating residue area in the middle of the separation cavity 101. One end of the suction pipe 3 is connected with a negative pressure pump. Under the action of the negative pressure pump, the inside of the suction pipe 3 is in a negative pressure state, thereby achieving the purpose of separating the lighter impurities. The paper pulp to be separated enters the separation cavity 101 through the pulp inlet pipe 2 to form a vortex for separation of good pulp and impurities. One end of the suction pipe 3 extends to the floating residue area in the middle of the separation cavity 101. The lighter floating pulp, waste gas and other light impurities in the floating residue area are absorbed and separated under the condition of negative pressure through the suction pipe 3, and are concentrated and discharged, thereby achieving the effect of good pulp and lighter floating pulp, waste gas and other light impurities.

[0029] The good slurry output pipe 4 is arranged at the top of the slag separator 1 and communicates with the separation chamber 101, the lighter floating slurry, waste gas and other light impurities located at the center of the slurry vortex are separated through the suction pipe 3, and the good slurry outside the floating slurry, that is, the good slurry area outside the floating sludge area, is discharged outward through the good slurry output pipe 4, thereby realizing the effective separation of the floating slurry and the good slurry. Since the good slurry output pipe 4 and the suction pipe 3 are both located at the top of the slag separator 1, the lighter floating slurry, waste gas and other light impurities are discharged upward, and the coarse slag is discharged downward of the slag separator 1, thereby realizing the separation of the coarse slag.

[0030] In addition, regarding the internal structure of the separation chamber 101, as shown in Figure 2 The inner cavity structure of the separation chamber 101 includes the annular surface wall body 102 and the square surface wall body 103 connected in sequence, and the annular surface wall body 102 and the square surface wall body 103 are arranged in sequence in an upper circular and lower square structure, so that the centrifugal force of the slurry gradually decreases, which can be used to gradually reduce the rotation speed of the slurry, and the low-speed rotating slurry can reduce the wear of the slurry on the cylinder wall of the separation chamber 101, thereby reducing the damage probability of the slag separator 1 and improving the service life and operation stability of the slag separator 1.

[0031] In some embodiments, as shown in Figure 2 . Figure 2 The utility model discloses a slag separator 1, which comprises a separation chamber 101, a suction pipe 3 and a good slurry output pipe 4.

[0032] In the embodiment, through the cooperation of the annular surface wall body 102 and the square surface wall body 103, when the slurry rotates through the annular surface wall body 102 and the square surface wall body 103, the centrifugal force of the slurry gradually decreases, which can be used to gradually reduce the rotation speed of the slurry, and the low-speed rotating slurry can reduce the wear of the slurry on the cylinder wall of the separation chamber 101, and in addition, through the cooperation of the rectangular bottom surface 104, the wear of the welding part of the discharge port 5 and the negative pressure collecting pipe 6 can be effectively avoided, thereby further improving the service life and operation stability of the slag separator 1.

[0033] In some embodiments, as shown in Figure 1 . Figure 1The utility model discloses a structure schematic drawing. Regarding the specific installation structure of suction pipe 3 and good slurry output pipe 4, the residue remover 1 middle top is equipped with connecting portion 105, and one end of good slurry output pipe 4 is communicated to connecting portion 105, and good slurry output pipe 4 can export the good slurry of the good slurry area in separation chamber 101. And one end of suction pipe 3 is inserted into connecting portion 105 and extends to the scum area in the middle part of separation chamber 101. In the embodiment, the cooperation installation of suction pipe 3, connecting portion 105 and good slurry output pipe 4 is compact in overall structure, and is convenient to install and use.

[0034] In the description of the utility model, it needs to explain that the term "include", "contain" or any other variant is intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes the elements inherent in such process, method, article or device. Without more limitation, the element defined by the sentence "including a" does not exclude the existence of other same elements in the process, method, article or device including the element.

[0035] In addition, in the description of the utility model, the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.

[0036] On the other hand, it needs to be explained that unless otherwise explicitly specified and limited, the terms "set in", "install", "connect", "connect" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

Claims

1. An improved slag removal device for papermaking, characterized in that, The utility model relates to a sludge removing device for slurry, which comprises: a sludge removing device (1) internally provided with a separation chamber (101), one side tangent and communicated with a slurry inlet pipe (2); a suction pipe (3) arranged at the top of the sludge removing device (1) and inserted into the separation chamber (101), one end of the suction pipe (3) extending to the scum area in the middle of the separation chamber (101); a good slurry outlet pipe (4) arranged at the top of the sludge removing device (1) and communicated with the separation chamber (101). The inner cavity structure of the separation chamber (101) comprises a ring surface wall body (102) and a square surface wall body (103) connected in sequence, which is used for gradually reducing the rotation speed of the sludge slurry to reduce the wear of the sludge slurry to the cylinder wall of the separation chamber (101).

2. The improved trash removing device for papermaking as claimed in claim 1, wherein The caliber of the ring surface wall body (102) and the square surface wall body (103) gradually decreases from top to bottom.

3. The improved trash removing device for papermaking as claimed in claim 1 or 2, wherein The bottom of the square surface wall body (103) is a rectangular bottom surface (104).

4. The improved trash removing device for papermaking as claimed in claim 3, wherein The rectangular bottom surface (104) is provided with a discharge port (5) for discharging coarse sludge, and the discharge port (5) is communicated with the separation chamber (101).

5. The improved trash removing device for papermaking as claimed in claim 4, wherein The bottom of the discharge port (5) is provided with a negative pressure collecting pipe (6) communicated with the discharge port (5).

6. The improved trash removing device for papermaking as claimed in claim 3, wherein The middle top of the sludge removing device (1) is provided with a connecting part (105), one end of the good slurry outlet pipe (4) is communicated with the connecting part (105), and the good slurry in the good slurry area inside the separation chamber (101) can be discharged.

7. The improved trash removing device for papermaking as claimed in claim 6, wherein One end of the suction pipe (3) penetrates and is inserted into the connecting part (105) and extends to the scum area in the middle of the separation chamber (101).

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