CN214383860U

CN214383860U - Sand remover for recycling recycled paper pulp from waste paper

Info

Publication number: CN214383860U
Application number: CN202023124329.9U
Authority: CN
Inventors: 徐荣基; 何祥尧; 刘庭辉
Original assignee: Jiaoling Jinfa Paper Co ltd
Current assignee: Jiaoling Jinfa Paper Co ltd
Priority date: 2020-12-22
Filing date: 2020-12-22
Publication date: 2021-10-12
Anticipated expiration: 2030-12-22

Abstract

The application relates to a waste paper resource regeneration paper pulp degritting machine belongs to resource technical field, and it includes: a cyclone sand removal cylinder; the feeding pipe is arranged on the rotational flow sand removing cylinder; a discharge pipe arranged on the rotational flow sand removal cylinder; and set up the sand outlet in whirl degritting bobbin base portion, be provided with grit detection mechanism on the discharging pipe, grit detection mechanism includes: pressing a plate; the detection bin is arranged on the pressing plate; side pipes arranged at two sides of the detection bin; and the first connecting pieces are arranged at the ends, far away from the detection bin, of the two side pipes, wherein the first connecting pieces at the two ends are flexibly connected in series on the discharge pipe, and the pressure plate is provided with a pressure sensor. The application provides a waste paper resource regeneration paper pulp degritting machine can improve the paper pulp quality of degritting machine output.

Description

Sand remover for recycling recycled paper pulp from waste paper

Technical Field

The application relates to the field of recycling technology, in particular to a sand remover for recycling recycled paper pulp from waste paper.

Background

The papermaking technology is one of four inventions in China, and with the progress of the technology, the manual workshop type production of papermaking is changed into automatic production line production, so that the production efficiency is greatly improved.

The pulping in the prior art mainly comprises two types, one is raw material pulping, and the other is waste paper pulping. The former consumes a large amount of natural resources such as wood, and the latter can not only recycle waste paper as a paper making raw material, but also save natural resources, and is a development direction of resource technology in the future. The latter has the advantages of simple process, low production of industrial waste, especially waste water, relatively clean, easy disposal and low environmental pollution. However, the channel for recovering the raw materials is complex, and the raw materials often contain a lot of silt and impurities, so that the prepared paper pulp cannot be directly used for papermaking and needs to be subjected to desanding and impurity removal treatment.

Adopt the spiral-flow type sand remover to handle the impurity in the paper pulp at present usually, specifically, the main working part of spiral-flow type sand remover includes the inlet pipe, discharging pipe and a spiral-flow type sand removal section of thick bamboo triplex, wherein, the sand outlet has been seted up to the bottom at a spiral-flow type sand removal section of thick bamboo, in operation, paper pulp lets in a spiral-flow type sand removal section of thick bamboo through the inlet pipe under the transport of raw materials pump, carry out the spiral-flow type sand removal in a spiral-flow type sand removal section of thick bamboo afterwards, grit in the paper pulp passes through sand outlet discharge spiral-flow type sand removal section of thick bamboo, thereby obtain no sand paper pulp.

In view of the related art in the above, the inventors consider that there are drawbacks in that: when the rotational flow speed of the rotational flow sand removal cylinder is insufficient, part of sand exists in the paper pulp, and the sand is discharged from the sand outlet together with the paper pulp, so that the quality of the paper pulp after sand removal is reduced.

SUMMERY OF THE UTILITY MODEL

In order to improve the degritting quality of degritting machine, the application provides a waste paper resource regeneration paper pulp degritting machine, can detect the degritting effect of whirl degritting machine through the grit detection mechanism who installs at the discharge gate, when detecting still containing more grit in the paper pulp, can carry this part paper pulp back flow degritting section of thick bamboo again and carry out the degritting once more to improve the paper pulp quality of degritting machine output.

The application provides a waste paper resource regeneration paper pulp sand removing machine adopts following technical scheme:

a sand remover for recycled paper pulp from waste paper resources comprises: a cyclone sand removal cylinder; the feeding pipe is arranged on the rotational flow sand removal cylinder; the discharge pipe is arranged on the rotational flow sand removal barrel; and set up in the sand outlet of whirl degritting bobbin base portion, be provided with grit detection mechanism on the discharging pipe, grit detection mechanism includes: pressing a plate; the detection bin is arranged on the pressing plate; the side pipes are arranged on two sides of the detection bin; and the first connecting pieces are arranged at two sides of the side pipes, are far away from one end of the detection bin, are flexibly connected with the discharging pipe in series at two ends, and are provided with pressure sensors.

Through adopting above-mentioned technical scheme, because first connecting piece is flexible connection spare, when being full of the paper pulp that awaits measuring in detecting the storehouse, pressure sensor can detect out the gravity that detects storehouse and both ends side lever this moment. Because the density of grit is greater than paper pulp, consequently, the above-mentioned data that will detect and the pressure sensor reading when detecting full standard paper pulp in the storehouse and comparing to whether can effectively analyze out to await measuring contains more grit in the paper pulp.

Preferably, the first connecting member includes: the flexible sleeve is sleeved on the discharge pipe and the side pipe; and the clamping rings are arranged at two ends of the flexible sleeve and used for fastening the flexible sleeve.

Through adopting above-mentioned technical scheme, the flexible cover makes there is one section hole between discharging pipe and side pipe, thereby make the discharging pipe can not directly provide the pulling force for detecting the storehouse, thereby make pressure sensor on the clamp plate can detect out the gravity of detecting the storehouse when filling with paper pulp, through will detecting the pressure sensor reading when being full of the paper pulp that awaits measuring in the storehouse and detecting the storehouse and fill the pressure sensor reading of standard paper pulp and contrast, can analyze out whether contain more grit in the paper pulp that awaits measuring.

Preferably, the snap ring comprises: the arc-shaped block is sleeved on the flexible sleeve; the fixed blocks are arranged at two ends of the arc-shaped block; and the bolt is used for connecting the two fixing blocks.

Through adopting above-mentioned technical scheme, when the bolt of screwing, can closely laminate arc piece inner circle on the flexible cover to effectively reduce the paper pulp that overflows from flexible cover both ends, keep the holistic leakproofness of first connecting piece.

Preferably, the inner ring of the arc-shaped block is provided with a rubber pad in an attaching manner.

Through adopting above-mentioned technical scheme, because the rubber pad possesses certain deformability, make the snap ring when laminating with the flexible sleeve, inseparabler that can laminate, its characterized in that, the subsides of arc piece inner circle are equipped with the rubber pad to improve the sealed effect of flexible sleeve.

Preferably, detect the storehouse with install the back flow between the inlet pipe, be provided with the backward flow valve on the back flow, wherein, be provided with on the back flow with the second connecting piece that first connecting piece structure is the same.

Through adopting above-mentioned technical scheme, make and detect the storehouse and can avoid the inlet pipe to provide the holding power to detecting the storehouse when with the inlet pipe intercommunication to reduce the influence to pressure sensor detection structure.

Preferably, a pressure balance valve is arranged on the detection bin.

Through adopting above-mentioned technical scheme, pressure balance valve can reduce the pressure differential inside and outside the detection storehouse when detecting the storehouse and passing through back flow discharge paper pulp to make in the inflow back flow that paper pulp can be more smooth and easy.

Preferably, the detection chamber is rod-shaped.

Through adopting above-mentioned technical scheme, the gravity potential energy at paper pulp top can be increased in shaft-like detection to better utilize the gravity will detect the paper pulp discharge in the storehouse, and then reduce the residue of paper pulp in detecting.

Preferably, the cyclone sand removal cylinder is connected with a water pipe, the lower part of the sand outlet is communicated with a sedimentation tank, a drain pipe is arranged on the sedimentation tank, and a drain valve is arranged on the drain pipe.

Through adopting above-mentioned technical scheme, the inner wall that can erode the whirl sand removal section of thick bamboo from the water pipe water that flows to wash into the sedimentation tank of sand outlet below with remaining grit and paper pulp on the whirl sand removal section of thick bamboo inner wall, treat paper pulp and grit and the layering back that stews in the sedimentation tank, open the drain valve, the upper waste liquid discharge that will contain paper pulp, thereby accomplish the recycle of paper pulp.

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

1. the pressure applied to the pressing plate by the detection bin can be measured through the flexible part, the detection bin and the pressing plate which is arranged at the bottom of the detection bin and is connected to the discharge pipe in series, so that the pressure value is compared with the value of the pressure sensor which is introduced into the standard paper pulp, and whether more gravels are contained in the gravels to be detected is detected;

2. can connect the flexible sleeve between side pipe and discharging pipe through flexible cover and snap ring to make first connecting piece establish ties on handling the discharging pipe, reduce the pulling force of discharging pipe simultaneously and to the interference in detection storehouse.

Drawings

FIG. 1 is a schematic view showing the overall structure of a recycled pulp degritting machine in the embodiment of the present application;

FIG. 2 is a partial cross-sectional view of a flexible sleeve in an embodiment of the present application;

fig. 3 is a schematic view of a snap ring structure in an embodiment of the present application.

Description of reference numerals: 11. a cyclone sand removal cylinder; 12. a feed pipe; 13. a discharge pipe; 14. a sand outlet; 21. a detection bin; 22. a side tube; 23. a return pipe; 24. a reflux valve; 25. a pressure balancing valve; 31. pressing a plate; 32. a flexible sleeve; 33. a snap ring; 331. an arc-shaped block; 332. a fixed block; 334. a rubber pad; 34. a check valve; 35. a discharge valve; 41. a water inlet pipe; 42. a sedimentation tank; 43. a drain pipe; 44. a drain valve; 5. a second connecting member.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a sand removing machine for waste paper recycling recycled paper pulp.

Referring to fig. 1, a waste paper recycling recycled pulp desander comprises a cyclone desander 11, in this embodiment, the upper portion of the cyclone desander 11 is cylindrical, the lower portion of the cyclone desander is conical, a feed pipe 12 is horizontally connected to the outer wall of the upper portion of the cyclone desander 11, a raw material pump (not shown in the figure) is installed at the input end of the feed pipe 12, a discharge pipe 13 is connected to the top of the cyclone desander 11, and a sand outlet 14 is formed in the bottom of the cyclone desander 11.

In the practical use process of the recycled pulp desander, when the material conveying pressure of the raw material pump is insufficient, the rotational speed of the desanding pulp in the rotational flow desanding cylinder 11 is slow, so that sand and stone in part of the pulp are not effectively separated, and the pulp output from the material outlet pipe 13 still contains excessive sand and stone.

In order to solve the problem, in the present embodiment, a sand detecting mechanism is connected in series to the discharging pipe 13, specifically, the sand detecting mechanism includes a pressure plate 31, the pressure plate 31 is fixed on a frame (not shown in the figure), the detecting chamber 21 is movably placed on the pressure plate 31, and meanwhile, a pressure sensor is installed on the pressure plate 31, and the pressure sensor can detect the pressure applied to the pressure plate 31 by the detecting chamber 21.

Referring to fig. 1 and 2, the two sides of the detection chamber 21 are symmetrically communicated with the side pipes 22, and a first connecting piece is installed at one end of each of the two side pipes 22 away from the detection chamber 21, wherein the first connecting piece comprises a flexible sleeve 32 with one end sleeved on the side pipe 22, and one ends of the two flexible sleeves 32 away from the side pipe 22 are connected in series on the discharge pipe 13. Snap rings 33 are mounted at the joints between the flexible sleeve 32 and the side pipe 22 and between the flexible sleeve 32 and the discharge pipe 13.

Referring to fig. 3, the snap ring 33 includes an arc-shaped block 331, the arc-shaped block 331 is attached to the outer surface of the flexible sleeve 32, fixing blocks 332 are symmetrically fixed to both ends of the arc-shaped block 331, the arc-shaped block 331 and the fixing blocks 332 are integrally formed when the snap ring 33 is processed, and a bolt is installed between the two fixing blocks 332.

The snap ring 33 can be fastened by bolts, thereby effectively preventing the pulp flowing through the discharge pipe 13 and the side pipe 22 from overflowing from both sides of the flexible sleeve 32.

In addition, for further improving the fastening effect of snap ring 33, be equipped with rubber pad 334 in the inner circle subsides of arc piece 331, because rubber pad 334 possesses certain deformability to when receiving the fastening force of bolt, laminating that can be better is at the surface of flexible cover 32, thereby improves the sealed effect of snap ring 33.

In this embodiment, a check valve 34 is installed between the input end of the discharge pipe 13 and the flexible sleeve 32 near the output end of the discharge pipe 13 for controlling the pulp entering the check chamber 21, and the feeding of the check chamber 21 can be controlled by the check valve 34. Meanwhile, a discharge valve 35 is installed between the output end of the discharge pipe 13 and the flexible sleeve 32 close to one side of the output end of the discharge pipe 13, and the discharge of the paper pulp in the detection bin 21 can be controlled through the discharge valve 35.

In this embodiment, in order to reduce the labor intensity of the sand removing worker, the detection valve 34, the discharge valve 35 and the pressure sensor are all electrically connected to the controller (not shown in the figure).

When the paper pulp to be detected needs to be detected, the detection valve 34 is opened, the discharge valve 35 is closed at the moment, and when the pipeline between the detection valve 34 and the discharge valve 35 is filled with the paper pulp to be detected, the detection valve 34 is closed. Because flexible cover 32 can bend in certain extent, thereby can reduce the influence of flexible cover 32's pulling force to pressure sensor, detect the storehouse this moment and produce pressure to oppression clamp plate 31 and pressure sensor under the effect of paper pulp, pressure sensor inputs this pressure reading to the controller, the controller compares this data with the average number of the pressure sensor reading of standard paper pulp, when containing more grit in the paper pulp that awaits measuring, can discover this moment pressure sensor's reading and show the reading that is greater than standard paper pulp through detecting, controller electrical control bleeder valve 35 door does not open this moment, effectively avoided containing the sand paper pulp to export from discharging pipe 13.

In addition, in the present embodiment, a return pipe 23 is connected to the bottom of the detection chamber 21, a second connector 5 and a return valve 24 for controlling the opening and closing of the return pipe 23 are installed on the return pipe 23, the return valve 24 is also electrically connected to the controller, wherein the second connector 5 has the same structure as the first connector. Furthermore, the return pipe 23 is connected to the feed pipe 12 at the end remote from the test chamber 21.

When sand is detected to be still contained in the pulp, the return valve 24 is opened, so that the pulp in the detection bin 21 flows to the feeding pipe 12 under the action of gravity and then is continuously fed into the cyclone sand removal cylinder 11 for further sand removal.

In addition, in order to make the pulp remaining in the inspection chamber 21 flow back to the feeding pipe 12 as much as possible, in the present embodiment, the inspection chamber 21 has a rod-like shape as a whole, and a pressure equalizing valve 25 is further installed in the inspection chamber 21 in order to make the pulp in the inspection chamber 21 more flow downward.

When the sandstone detection mechanism detects that the paper pulp to be detected is qualified, the detection valve 34 and the discharge valve 35 are opened, so that the paper pulp is output from the discharge pipe 13.

In the actual use of the sand and stone detection mechanism, it has been found that a small amount of pulp remains on the surface of the sand and stone discharged through the sand outlet 14, and that the waste of resources is caused if the sand and stone is directly buried and discarded.

To solve this problem, in this embodiment, a water inlet pipe 41 is connected to the outer wall of the cyclone sand removing cylinder 11, and a sedimentation tank 42 is connected to the bottom of the sand outlet 14. A drain pipe 43 is connected to a side wall of the sedimentation tank 42, and a drain valve 44 is attached to the drain pipe 43.

After the cyclone sand removing cylinder 11 removes sand from the paper pulp, the end of the water inlet pipe 41 away from the cyclone sand removing cylinder 11 is connected with tap water, and then the tap water enters the cyclone sand removing cylinder 11 and flushes part of the sand adhered to the inner wall of the cyclone sand removing cylinder 11 into the sedimentation tank 42. After a period of time, the sand and stone sink into the bottom of the sedimentation tank 42 under the action of gravity, at this time, the drain valve 44 is opened to discharge the tap water containing the pulp in the upper layer, thereby realizing the efficient utilization of the pulp raw material.

The implementation principle of the waste paper recycling recycled paper pulp sand remover in the embodiment of the application is as follows:

when the sand and stone detection mechanism is used for the first time, the discharge valve 35 is closed firstly, the detection valve 34 is opened, then the standard paper pulp is conveyed to the cyclone sand removing cylinder 11 through the raw material pump, the standard paper pulp sequentially flows through the discharge pipe 13 and the flexible sleeve 32 and finally enters the detection bin 21, the detection bin 21 is filled after a period of time, when a sand removing worker observes that the flexible sleeves 32 on the two sides begin to expand and bulge, the detection valve 34 is closed through the controller, and the reading of the pressure sensor at the moment is recorded. The above steps are then repeated a number of times, and the average of the pressure sensor readings is recorded and input into the controller.

When paper pulp without desanding is led into the cyclone desanding cylinder 11 through the raw material pump, part of sand in the paper pulp is discharged out of the cyclone desanding cylinder 11 through the sand outlet 14, and after a period of desanding, a desander worker detects the paper pulp.

At this moment, a degritting worker opens the detection valve 34, close the discharge valve 35 and the reflux valve 24, the paper pulp of the cyclone degritting cylinder 11 flows into the detection bin 21 through the discharge pipe 13, when the degritting worker observes that the flexible sleeves 32 on the two sides begin to expand, the control controller closes the detection valve 34, then the controller reads the reading of the pressure sensor at the moment and compares the reading with the reading of standard paper pulp, the reading range of the standard paper pulp pressure sensor can be established according to different practical conditions, and if the pressure sensor of the paper pulp to be detected exceeds the range of the pressure sensor of the standard paper pulp, the controller judges that the paper pulp to be detected at the moment still contains excessive sand.

Then the controller automatically opens the return valve 24 to make the paper pulp in the detection bin 21 flow back to the cyclone sand removing cylinder 11 along the return pipe 23 and the discharge pipe 13 for continuous sand removal.

If the detection result is qualified, the detection valve 34 and the discharge valve 35 are opened to discharge the pulp in the cyclone sand removal cylinder 11 from the discharge pipe 13.

After the sand of the paper pulp is completely removed, the water inlet pipe 41 is opened, water is introduced into the rotational flow sand removal cylinder 11 through the water inlet pipe 41, sand on the inner wall of the rotational flow sand removal cylinder 11 is washed to the sedimentation tank 42 below the sand outlet 14 under the washing of tap water, then the sedimentation tank 42 is kept still for layering, finally the drain valve 44 is opened, the water containing the paper pulp is discharged out of the sedimentation tank 42, and the recovery of the paper pulp is completed.

The above are all preferred embodiments of the present application, and the present embodiment is only explained for the present application, and the protection scope of the present application is not limited by this, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A sand remover for recycled paper pulp from waste paper resources comprises: a cyclone sand removal cylinder (11); the feeding pipe (12) is arranged on the cyclone sand removal cylinder (11); a discharge pipe (13) arranged on the cyclone sand removal cylinder (11); and set up in go out sand mouth (14) of whirl desanding section of thick bamboo (11) bottom, its characterized in that, be provided with grit detection mechanism on discharging pipe (13), grit detection mechanism includes: a pressure plate (31); a detection bin (21) arranged on the pressure plate (31); side pipes (22) arranged at two sides of the detection bin (21); and the first connecting pieces are arranged at two sides of one end, far away from the detection bin (21), of the side pipe (22), the first connecting pieces are flexibly connected with the discharge pipe (13) in series at two ends, and a pressure sensor is arranged on the pressure plate (31).

2. The used paper resource recycled pulp sand remover according to claim 1, wherein the first connecting member comprises: a flexible sleeve (32) sleeved on the discharge pipe (13) and the side pipe (22); and clamping rings (33) which are arranged at two ends of the flexible sleeve (32) and are used for fastening the flexible sleeve (32).

3. A waste paper recycling pulp sand remover according to claim 2, wherein said snap ring (33) comprises: an arc-shaped block (331) sleeved on the flexible sleeve (32); the fixed blocks (332) are arranged at two ends of the arc-shaped block (331); and the bolt is used for connecting the two fixing blocks (332).

4. A waste paper recycling recycled pulp sand remover according to claim 3, wherein the inner ring of said arc-shaped block (331) is adhered with a rubber pad (334).

5. A waste paper recycling pulp degritting machine according to claim 1, characterized in that a return pipe (23) is installed between the detection bin (21) and the feeding pipe (12), a return valve (24) is arranged on the return pipe (23), wherein a second connecting member (5) having the same structure as the first connecting member is arranged on the return pipe (23).

6. A paper waste recycling pulp sand remover according to claim 1, characterized in that said detection bin (21) is provided with a pressure balance valve (25).

7. A paper waste recycling pulp degritting machine according to claim 1, characterized in that said detection bin (21) is rod-shaped.

8. The waste paper recycling recycled pulp sand removing machine according to claim 1, wherein a water inlet pipe (41) is connected to the cyclone sand removing cylinder (11), a sedimentation tank (42) is communicated below the sand outlet (14), a drain pipe (43) is arranged on the sedimentation tank (42), and a drain valve (44) is arranged on the drain pipe (43).