Paper pulp deslagging device

Abstract

The utility model relates to a paper pulp deslagging device, and relates to the field of papermaking equipment, the paper pulp deslagging device comprises a tank body, a separation assembly and a deslagging assembly, the top of the tank body is provided with a pulp inlet, the side wall of the tank body is provided with a deslagging port, the deslagging port is provided with an opening and closing door, the bottom of the tank body is provided with a pulp outlet, and the separation assembly and the deslagging assembly are both arranged in the tank body. The separation assembly comprises a filter plate and a centrifugal part, the filter plate is used for filtering large-particle-size impurities in paper pulp, the centrifugal part is used for separating the paper pulp from small-particle-size impurities, the residue discharging assembly comprises a transmission part and a residue conveying part, and the centrifugal part drives the residue conveying part through the transmission part to convey the small-particle-size impurities to the residue discharging opening. The device has the effects that the time consumed by coarse screening and fine screening is shortened, and the residue removal efficiency of paper pulp is improved.

Description

Technical Field

[0001] The present application relates to the field of papermaking equipment, and in particular to a pulp removing device. Background Art

[0002] In the papermaking process, since the pulp contains solid particles such as sawdust, bark, stones, mud and sand, these impurities have different degrees of influence on the quality and mechanical properties of the paper, so the pulp needs to be deslagging.

[0003] At present, in the slag removal process, for light impurities such as mixed adhesives, paraffin, hot melt adhesives, plastic sheets, foams, gases, ink particles, etc. whose density is lower than that of the slurry, the floating object salvage method can be used for slag removal. However, for heavy impurities such as sand, gravel, iron filings, etc. whose density is higher than that of the slurry, they need to be coarsely screened first and then transferred to another container for fine screening, which is time-consuming and has low slag removal efficiency. Utility Model Content

[0004] In order to reduce the time consumed in coarse screening and fine screening and improve the pulp deslagging efficiency, the present application provides a pulp deslagging device.

[0005] The present application provides a pulp slag removal device, which adopts the following technical solution:

[0006] A pulp slag removal device comprises a tank body, a separation component and a slag discharge component, wherein a pulp inlet is arranged on the top of the tank body, a slag discharge port is arranged on the side wall of the tank body, an opening and closing door is arranged at the slag discharge port, and a pulp outlet is arranged at the bottom of the tank body, the separation component and the slag discharge component are both arranged in the tank body, the separation component comprises a filter plate and a centrifugal component, the filter plate is used to filter large-size impurities in the pulp, the centrifugal component is used to separate the pulp from small-size impurities, the slag discharge component comprises a transmission component and a slag transport component, and the centrifugal component drives the slag transport component through the transmission component to transport the small-size impurities to the slag discharge port.

[0007] By adopting the above technical scheme, the pulp without floating objects is added into the tank body from the pulp inlet, the pulp is first filtered by the filter plate, and the large particle size impurities will remain on the top of the filter plate. The filtered pulp falls into the centrifugal part, which can separate the small particle size impurities therein, and in the centrifugal process, the centrifugal part will drive the slag transport part through the transmission part to transport the small particle size impurities separated by centrifugation to the slag discharge port. The staff opens the opening and closing door to clean the large particle size impurities and the small particle size impurities from the slag discharge port, and the pulp with the small particle size impurities removed will be discharged from the pulp outlet, without the need to transfer the pulp, and the coarse screening and fine screening processes can be carried out at the same time, which reduces the processing time and improves the slag removal efficiency.

[0008] Optionally, the centrifugal component includes a motor, a rotating tube and a centrifugal bucket, the motor is fixedly mounted on the top of the tank body, the output shaft of the motor passes through the top wall of the tank body and is connected to the rotating tube, the rotating tube is rotatably connected to the filter plate and fixedly connected to the centrifugal bucket through a support rod, the centrifugal bucket is arranged below the filter plate, a flow chamber is arranged between the centrifugal bucket and the inner wall of the tank body, a slurry discharge port is arranged on the lower side wall of the centrifugal bucket, and an electric valve is arranged at the slurry discharge port.

[0009] By adopting the above technical solution, after the pulp is added into the tank body, the motor is started, and the motor output shaft drives the rotating tube to drive the centrifugal barrel to rotate. The pulp and small-sized impurities will be separated under the action of centrifugal force, and the small-sized impurities will gather at the bottom of the centrifugal barrel near the rotating tube. At the same time, the motor will drive the slag transport component through the transmission component to transport the small-sized impurities at the bottom of the centrifugal barrel to the slag discharge port. Coarse screening, fine screening and slag discharge can be carried out at the same time, which significantly reduces the processing time of the pulp.

[0010] Optionally, the slag transport member includes a rotating rod and a spiral plate coaxially fixedly connected to the side wall of the rotating rod, the rotating rod and the spiral plate are both rotatably connected in the rotating tube, the rotating rod is fixedly connected to the output shaft of the motor, the transmission member is arranged between the rotating rod and the rotating tube, the bottom end portion of the spiral plate is exposed from the rotating tube, and the upper side wall of the rotating tube is provided with a penetrating slag discharge hole.

[0011] By adopting the above technical solution, after the centrifugal barrel separates the pulp and small-sized impurities, the small-sized impurities gather at the bottom of the centrifugal barrel near the rotating tube, and some of the small-sized impurities fall on the spiral plate. When the motor is started, the motor output shaft drives the rotating rod to rotate, and the spiral plate rotates accordingly, which can transport the small-sized impurities at the bottom of the centrifugal barrel upward and discharge them from the slag discharge hole. There is no need for staff to clean the centrifugal barrel, which is convenient and saves trouble.

[0012] Optionally, the transmission member includes a driving gear, a ring gear and a driven gear, the driving gear is coaxially fixedly connected to the top of the rotating rod, the ring gear is coaxially fixedly connected to the top inner wall of the rotating tube, and the driven gear is meshingly connected between the driving gear and the ring gear.

[0013] By adopting the above technical solution, the motor output shaft drives the rotating rod to rotate, the driving gear coaxially fixedly connected to the rotating rod drives the driven gear to rotate, the driven gear drives the ring gear to rotate, and the ring gear drives the rotating tube to rotate synchronously. The motor makes the rotating rod and the rotating tube rotate at the same time, which reduces the power source and reduces energy consumption. In addition, the rotating tube rotates in opposite directions to the rotating rod, which improves the efficiency of the spiral plate in transporting small-size impurities to the slag discharge port.

[0014] Optionally, a push plate is fixedly connected to the outer side wall of the rotating tube, and the bottom of the push plate is in contact with the top of the filter plate.

[0015] By adopting the above technical solution, the push plate rotates with the rotating rod, and the large-sized impurities remaining on the top of the filter plate are pushed to the slag discharge port in time, which is convenient for the staff to clean it and reduces the possibility of clogging of the filter plate.

[0016] Optionally, a clearance hole is opened on the filter plate, a slag discharge groove is arranged below the clearance hole, and the bottom of the slag discharge groove is inclined downward from a side away from the slag discharge port to a side close to the slag discharge port.

[0017] By adopting the above technical solution, the push plate can push the large-sized impurities on the filter plate into the slag discharge trough, and the large-sized impurities will slide along the bottom wall of the slag discharge trough to the slag discharge port, which is more convenient and saves trouble.

[0018] Optionally, the bottom of the centrifugal bucket is arranged to be inclined downward along the edge toward the direction close to the axis of the rotating tube.

[0019] By adopting the above technical solution, as the spiral plate transports small-particle impurities at the center of the bottom of the centrifuge bucket upward, small-particle impurities that fall at other positions on the bottom of the centrifuge bucket will gather toward the center position as the centrifuge bucket rotates, allowing the spiral plate to transport more small-particle impurities to the slag discharge port.

[0020] Optionally, the horizontal plane where the slag discharge hole is located is above the horizontal plane where the filter plate is located.

[0021] By adopting the above technical solution, the spiral plate can transport small-sized impurities to the filter plate, and the staff can clean up large-sized impurities and small-sized impurities together from the slag discharge port, saving time and effort.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Add the pulp with floating objects removed into the tank from the pulp inlet. The pulp is first filtered by the filter plate. Large-sized impurities will remain on the top of the filter plate. The filtered pulp falls into the centrifugal part, which can separate the small-sized impurities. During the centrifugal process, the centrifugal part drives the slag transport part through the transmission part to transport the small-sized impurities separated by centrifugation to the slag discharge port. The staff opens the opening and closing door to clean the large-sized impurities and small-sized impurities from the slag discharge port. The pulp with small-sized impurities removed will be discharged from the pulp outlet. There is no need to transfer the pulp. The coarse screening and fine screening processes can be carried out at the same time, which reduces the processing time and improves the slag removal efficiency.

[0024] 2. After the centrifugal bucket separates the pulp and small-sized impurities, the small-sized impurities gather at the bottom of the centrifugal bucket near the rotating tube, and some of the small-sized impurities fall on the spiral plate. When the motor starts, the motor output shaft drives the rotating rod to rotate, and the spiral plate rotates accordingly, which can transport the small-sized impurities at the bottom of the centrifugal bucket upward and discharge them from the slag discharge hole, without the need for staff to clean the centrifugal bucket;

[0025] 3. The horizontal plane of the slag discharge hole is above the horizontal plane of the filter plate. The spiral plate can transport small-sized impurities to the filter plate. The staff can clean up large-sized impurities and small-sized impurities together from the slag discharge port, saving time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the pulp slag removal device of the present application;

[0027] Figure 2 is a cross-sectional view of the pulp deslagging device of the present application;

[0028] Figure 3 yes Figure 2 Enlarged view of part A.

[0029] Explanation of the reference numerals in the accompanying drawings: 1. tank body; 11. slurry inlet; 12. slag discharge port; 121. opening and closing door; 13. slurry discharge port; 14. circulation chamber; 2. separation assembly; 21. filter plate; 211. clearance hole; 22. centrifugal part; 221. motor; 222. rotating tube; 2221. slag discharge hole; 223. centrifugal barrel; 2231. slurry discharge port; 3. slag discharge assembly; 31. slag transport part; 311. rotating rod; 312. spiral plate; 32. transmission part; 321. driving gear; 322. gear ring; 323. driven gear; 4. support rod; 5. slag discharge trough; 6. push plate. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-3 This application is described in further detail.

[0031] Reference Figure 1 and Figure 2 A pulp slag removal device disclosed in an embodiment of the present application comprises a tank body 1, a separation assembly 2 and a slag discharge assembly 3, wherein the separation assembly 2 is arranged on the tank body 1, and the slag discharge assembly 3 is arranged inside the tank body 1. The cross section of the tank body 1 is circular, and a pulp inlet 11 is provided on the top thereof, and a slag discharge outlet 12 is provided on the side wall of the tank body 1 away from the pulp inlet 11, and an opening and closing door 121 is provided at the slag discharge outlet 12, which is opened or closed by a staff member, and the bottom of the tank body 1 is inclined downward from the side away from the axis to the side close to the axis, and a pulp outlet 13 is provided at the center of the bottom of the tank body 1.

[0032] The separation assembly 2 includes a filter plate 21 and a centrifugal member 22, wherein the filter plate 21 is fixedly mounted on the upper inner wall of the tank body 1 and is used to filter large-size impurities in the pulp. The centrifugal member 22 includes a motor 221, a rotating tube 222 and a centrifugal bucket 223, wherein the motor 221 is fixedly mounted at the center of the outer top of the tank body 1, the output shaft of the motor 221 is penetrated through the top wall of the tank body 1 and connected with the rotating tube 222, the cross section of the rotating tube 222 is circular, and is arranged in the tank body 1 along the vertical direction, the rotating tube 222 is penetrated and rotatably connected to the filter plate 21, the centrifugal bucket 223 is arranged below the filter plate 21, the bottom end of the rotating tube 222 is fixedly connected to the inner bottom wall of the centrifugal bucket 223 through the support rod 4, the rotating tube 222 rotates coaxially with the centrifugal bucket 223, and the bottom of the centrifugal bucket 223 is inclined downward along the edge toward the direction close to the axis of the rotating tube 222.

[0033] It should be noted that a circulation chamber 14 is provided between the centrifugal barrel 223 and the inner wall of the tank body 1 , the circulation chamber 14 is connected to the slurry outlet 13 , a slurry outlet 2231 is provided on the lower side wall of the centrifugal barrel 223 , and an electric valve is fixedly installed at the slurry outlet 2231 .

[0034] Reference Figure 2 and Figure 3 The slag discharge assembly 3 is arranged in the rotating tube 222, which includes a slag transport part 31 and a transmission part 32. The slag transport part 31 includes a rotating rod 311 and a spiral plate 312. One end of the rotating rod 311 is fixedly connected to the output shaft of the motor 221. The rotating rod 311 is connected to the rotating tube 222 through the transmission part 32. The spiral plate 312 is coaxially fixedly connected to the side wall of the rotating rod 311. The side wall of the spiral plate 312 is in contact with the inner wall of the rotating tube 222, and its bottom end is partially exposed from the rotating tube 222. A slag discharge hole 2221 is provided on the upper side wall of the rotating tube 222. It should be noted that the horizontal plane where the slag discharge hole 2221 is located is above the horizontal plane where the filter plate 21 is located.

[0035] The transmission member 32 includes a driving gear 321, a ring gear 322 and a driven gear 323. The driving gear 321 is coaxially fixedly connected to the top of the rotating rod 311, the ring gear 322 is coaxially fixedly connected to the inner wall of the top of the rotating tube 222, and the driven gear 323 is meshedly connected between the driving gear 321 and the ring gear 322. The driven gear 323 is rotatably connected to the tank body 1.

[0036] In addition, a clearance hole 211 is opened on the side of the filter plate 21 close to the slag discharge port 12, and a slag discharge groove 5 is arranged below the clearance hole 211. The slag discharge groove 5 is fixedly installed at the bottom of the filter plate 21, and the inner bottom wall of the slag discharge groove 5 is inclined downward from the side away from the slag discharge port 12 to the side close to the slag discharge port 12, so that impurities can slide to the slag discharge port 12 along the setting direction of its inner bottom wall.

[0037] In order to facilitate the staff to clean the impurities on the filter plate 21, a push plate 6 is fixedly installed on the outer wall of the rotating tube 222. The bottom of the push plate 6 fits with the top of the filter plate 21, and can push the impurities on the top of the filter plate 21 into the slag discharge trough 5.

[0038] The implementation principle of a pulp slag removal device in the embodiment of the present application is as follows: the staff adds the pulp to be freed of floating objects into the tank body 1 from the pulp inlet 11, and the pulp falls into the centrifugal bucket 223 after being filtered by the filter plate 21, and the large-size impurities remain on the filter plate 21. The motor 221 is started, and the output shaft of the motor 221 drives the driving gear 321 to rotate, the driving gear 321 drives the driven gear 323 to rotate, the driven gear 323 drives the ring gear 322 to rotate, and the ring gear 322 drives the rotating tube 222 to rotate synchronously, so that the rotating rod 311 and the rotating tube 222 rotate synchronously and in opposite directions. The rotating tube 222 drives the centrifugal barrel 223 to rotate, and the pulp and small-sized impurities are separated under the action of centrifugal force. The small-sized impurities gather at the bottom of the centrifugal barrel 223 near the rotating tube 222, and some of the small-sized impurities fall on the spiral plate 312. The spiral plate 312 rotates with the rotating rod 311, and can transport the small-sized impurities at the bottom of the centrifugal barrel 223 upward, discharge them from the slag discharge hole 2221, and fall on the filter plate 21. The rotating tube 222 drives the push plate 6 to rotate around the axis of the rotating tube 222, and pushes the large-sized impurities and small-sized impurities on the filter plate 21 into the slag discharge trough 5. The large-sized impurities and small-sized impurities will slide along the setting direction of the inner bottom wall of the slag discharge trough 5 to the slag discharge port 12. The staff only needs to open the opening and closing door 121 to clean them.

[0039] The staff opens the electric valve, and the screened pulp is discharged from the pulp discharge port 2231 into the circulation cavity 14, and then flows out along the inner wall of the tank from the pulp outlet 13. The present application can simultaneously perform coarse screening, fine screening and slag removal on the pulp, reducing the pulp processing time and improving the slag removal efficiency.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pulp slag removal device, characterized in that: The invention comprises a tank body (1), a separation component (2) and a slag discharge component (3), wherein a pulp inlet (11) is arranged at the top of the tank body (1), a slag discharge port (12) is arranged on the side wall of the tank body (1), an opening and closing door (121) is arranged at the slag discharge port (12), and a pulp outlet (13) is arranged at the bottom of the tank body (1). The separation component (2) and the slag discharge component (3) are both arranged in the tank body (1), the separation component (2) comprises a filter plate (21) and a centrifugal member (22), the filter plate (21) is used to filter large-size impurities in pulp, the centrifugal member (22) is used to separate pulp from small-size impurities, and the slag discharge component (3) comprises a transmission member (32) and a slag transport member (31), and the centrifugal member (22) drives the slag transport member (31) through the transmission member (32) to transport small-size impurities to the slag discharge port (12).

2. The pulp removing device according to claim 1, characterized in that: The centrifugal component (22) comprises a motor (221), a rotating tube (222) and a centrifugal bucket (223); the motor (221) is fixedly mounted on the top of the tank body (1); the output shaft of the motor (221) is passed through the top wall of the tank body (1) and is connected to the rotating tube (222); the rotating tube (222) is rotatably connected to the filter plate (21) and is fixedly connected to the centrifugal bucket (223) via a support rod (4); the centrifugal bucket (223) is arranged below the filter plate (21); a flow cavity (14) is arranged between the centrifugal bucket (223) and the inner wall of the tank body (1); a pulp discharge port (2231) is arranged on the lower side wall of the centrifugal bucket (223); and an electric valve is arranged at the pulp discharge port (2231).

3. The pulp removing device according to claim 2, characterized in that: The slag transport member (31) comprises a rotating rod (311) and a spiral plate (312) coaxially fixedly connected to a side wall of the rotating rod (311); the rotating rod (311) and the spiral plate (312) are both rotatably connected to the rotating tube (222); the rotating rod (311) is fixedly connected to an output shaft of the motor (221); the transmission member (32) is arranged between the rotating rod (311) and the rotating tube (222); the bottom end portion of the spiral plate (312) is exposed from the rotating tube (222); and a slag discharge hole (2221) is provided on the upper side wall of the rotating tube (222).

4. The pulp removing device according to claim 3, characterized in that: The transmission member (32) comprises a driving gear (321), a gear ring (322) and a driven gear (323); the driving gear (321) is coaxially fixedly connected to the top of the rotating rod (311); the gear ring (322) is coaxially fixedly connected to the top inner wall of the rotating tube (222); and the driven gear (323) is meshingly connected between the driving gear (321) and the gear ring (322).

5. The pulp removing device according to claim 2, characterized in that: A push plate (6) is fixedly connected to the outer wall of the rotating tube (222), and the bottom of the push plate (6) is in contact with the top of the filter plate (21).

6. The pulp removing device according to claim 5, characterized in that: The filter plate (21) is provided with a clearance hole (211), a slag discharge groove (5) is provided below the clearance hole (211), and the bottom of the slag discharge groove (5) is arranged to be inclined downward from a side away from the slag discharge port (12) to a side close to the slag discharge port (12).

7. The pulp removing device according to claim 2, characterized in that: The bottom of the centrifugal bucket (223) is arranged along an edge thereof to be inclined downward in a direction close to the axis of the rotating tube (222).

8. The pulp removing device according to claim 3, characterized in that: The horizontal plane at which the slag discharge hole (2221) is located is above the horizontal plane at which the filter plate (21) is located.

Images