A high-efficiency desanding system for pulping

Abstract

A kind of pulping high-efficiency sand removal system, including base plate and support frame, support frame is arranged on the base plate, sand remover is arranged on the support frame, throttle is arranged at the lower end of the sand remover, the upper portion of the sand remover is provided with input pipe, the top end of the sand remover is provided with output pipe, first water pump is arranged on the input pipe;Throttle below is provided with integrated pipe, the integrated pipe below is provided with buffer structure, the buffer structure below is provided with receiving hopper, the receiving hopper below is provided with distribution bin, the bottom end of the distribution bin is provided with collection groove, the flow rate of sand discharge is accurately controlled by throttle, and the residence time of slurry is extended;Combining buffer structure periodic dumping and distribution bin initial speed separation, make tailings ash content from 50% to more than 70%, reduce subsequent processing cost;Circulation pipe design reduces slurry waste by more than 15%, and the overall sand removal efficiency is improved by 30%.

Description

TECHNICAL FIELD

[0001] The present application relates to waste paper pulping sand removal equipment sand technical field, especially to a kind of pulping high-efficiency sand removal system. BACKGROUND

[0002] Paper production is divided into two basic processes of pulping and papermaking, pulping is to make plant fiber raw materials into brown paper pulp or bleached pulp, papermaking is to process paper pulp fiber suspended in water into paper, waste newspaper needs to go through pulping, screening, deinking and sand removal process, sand removal device is the main treatment equipment in sand removal process, its inner wall is a smooth cone surface, which uses the centrifugal force generated by the tangent incoming paper pulp to remove sand or heavy impurities;

[0003] In the pulping production process, especially when using waste paper pulping, various solid impurities such as sand, small fiber debris, staples and iron blocks may be contained in the paper pulp, which will cause many adverse effects on subsequent paper pulp processing and production, for example, if the impurities such as sand are not removed in time, it will accelerate the wear of subsequent equipment, like it will accelerate the wear of three-phase separator, it may also cause sand deposition in anaerobic tank, which needs to be cleaned regularly, increasing the equipment maintenance cost and downtime, at the same time, impurities will also affect the quality of paper, resulting in defects such as dust and holes in paper, reducing the quality and market competitiveness of paper;

[0004] At present, the domestic waste paper raw materials are diversified, and the fillers in waste paper are increasing, in the treatment of traditional sand removal device, due to no special design at sand discharge port, tailings and part of pulp are directly discharged into the collection tank, the ash content of tailings is low, and subsequent treatment steps are needed to send tailings into incineration, the processing efficiency is low, at the same time, small fillers will flow out from the output pipe with pulp and water, resulting in that the produced raw paper contains many fillers and impurities, affecting product quality, in order to solve the above problems, a kind of pulping high-efficiency sand removal system is provided. SUMMARY

[0005] In view of the above technical problems, the present application provides a kind of pulping high-efficiency sand removal system, including base plate and support frame, the base plate is provided with support frame, the support frame is provided with sand removal device, the lower end of the sand removal device is provided with throttling device, the upper portion of the sand removal device is provided with input pipe, the top of the sand removal device is provided with output pipe, the input pipe is provided with first water pump;

[0006] Further, the throttling device is provided below the integrated pipe, the integrated pipe is provided below the buffer structure, the buffer structure is provided below the receiving hopper, the receiving hopper is provided below the distribution bin, the bottom of the distribution bin is provided with a collection tank, the collection tank is provided below the tee pipe;

[0007] Further, one outlet of the tee pipe is provided with a circulating pipe, the other end of the circulating pipe is connected with the input pipe, a second water pump is arranged on the circulating pipe, and the second water pump is used for driving the flow of materials in the circulating pipe.

[0008] Further, another outlet of the tee pipe is provided with a concentration box, a folding cover is arranged on the concentration box, a feeding opening is arranged on the concentration box, and a drain pipe is arranged on the side of the concentration box.

[0009] Further, the desanders are fixedly arranged on the support frame, there are a plurality of desanders, the input pipe is connected with the plurality of desanders through a flow divider, the input pipe is connected with the outside, and the first water pump is used for inputting slurry from the outside to the desanders.

[0010] Further, the upper end of each desander is connected with an output pipe through an interface, and the output pipe is connected with the outside.

[0011] Further, the lower end of each desander is provided with a throttling device through a thread, the throttling device is provided with a valve, the valve is used for adjusting the flow rate of the sand discharged from the desander, the lower end of each throttling device is connected with an integrated pipe through a pipeline, and the outlet of the integrated pipe is located directly above the buffer structure.

[0012] Further, the buffer structure is fixedly connected with the support frame, the buffer structure has a closed cavity, the upper end and the lower end of the buffer structure are provided with electric valves, the electric valves are used for controlling the feeding and discharging of the buffer structure, a receiving hopper is arranged below the buffer structure, the receiving hopper is fixedly arranged on the support frame, the bottom of the receiving hopper is provided with a guide pipe, and the guide pipe faces the side wall of the material distribution bin.

[0013] Further, the upper half of the material distribution bin is provided with a valve-equipped discharge pipe for discharging light impurities, the bottom of the material distribution bin is provided with a collecting groove, and the two outlets of the tee pipe are provided with valve bodies, which are used for controlling the opening and closing of the outlets.

[0014] Further, the concentration box is arranged on the base plate, the top of the concentration box is provided with an opening, the opening is provided with a folding cover through a rotating shaft, the folding cover is provided with a handle, the feeding opening is provided with a bolted cover, a drain pipe is arranged on the middle of the side of the concentration box, the drain pipe is provided with a valve body, which is used for discharging the liquid in the concentration box, the interface between the circulating pipe and the input pipe is provided with a valve body, which is used for controlling the connection of the circulating pipe with the input pipe, and the valve bodies of the first water pump and the second water pump are controlled by an external controller.

[0015] The beneficial effects of the present application are as follows:

[0016] The present application adjusts the flow rate of the sand discharging of the desander by using the valve to adjust the flow rate of the sand discharging of the desander, adjusts the throttle at the lower end of the desander, reduces the flow rate of the sand and slurry discharging of the desander, when the throttle opening is 50%, the ash content is 70%, when the throttle opening is 80%, the ash content is 55%, the sand and slurry in the desander can run for a longer time in the desander, more slurry is discharged, and the ash content of the tailings of the desander is increased from 50% to more than 70%;

[0017] By using the buffer structure, the receiving hopper and the material distribution bin, periodic downward water pouring can be realized, the material can be sequentially introduced into the subsequent separation link, sufficient time is provided for the material separation in the material distribution bin during the water storage process, the interference of continuous feeding on the separation is reduced, and the whole material separation process is more efficient and stable.

[0018] Through the design of the circulating pipe, part of the material can be recycled, the waste of the material is reduced, the overall processing efficiency and material utilization rate are improved, the waste of the slurry is reduced by more than 15% through the design of the circulating pipe, the overall desanding efficiency is improved by 30%, and the desanding is more efficient. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a whole structure schematic view of the present application of a high-efficiency desanding system for pulping.

[0020] Figure 2 It is a desander structure schematic view of the present application of a high-efficiency desanding system for pulping.

[0021] Figure 3 It is a receiving hopper and material distribution bin structure schematic view of the present application of a high-efficiency desanding system for pulping.

[0022] Figure 4 It is a three-way pipe structure schematic view of the present application of a high-efficiency desanding system for pulping.

[0023] As shown in the figure: 1, base plate; 2, support frame; 3, desander; 4, throttle; 5, input pipe; 6, output pipe; 7, first water pump; 8, integrated pipe; 9, buffer structure; 10, receiving hopper; 11, material distribution bin; 12, collection tank; 13, three-way pipe; 14, circulating pipe; 15, second water pump; 16, concentration box; 17, folding cover; 18, feeding port; 19, drain pipe. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting" 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 those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as they do not conflict with each other.

[0027] Embodiment 1

[0028] The present application provides a pulping efficient sand removal system, comprising a substrate 1 and a support frame 2, the support frame 2 is arranged on the substrate 1, a sand remover 3 is arranged on the support frame 2, a throttle 4 is arranged at the lower end of the sand remover 3, an input pipe 5 is arranged at the upper part of the sand remover 3, an output pipe 6 is arranged at the top end of the sand remover 3, a first water pump 7 is arranged on the input pipe 5;

[0029] Further, an integrated pipe 8 is arranged below the throttle 4, a buffer structure 9 is arranged below the integrated pipe 8, a receiving funnel 10 is arranged below the buffer structure 9, a distribution bin 11 is arranged below the receiving funnel 10, a collection groove 12 is arranged at the bottom end of the distribution bin 11, and a three-way pipe 13 is arranged below the collection groove 12;

[0030] Further, one outlet of the three-way pipe 13 is provided with a circulating pipe 14, the other end of the circulating pipe 14 is connected with the input pipe 5, a second water pump 15 is arranged on the circulating pipe 14 for driving the flow of materials in the circulating pipe 14;

[0031] Further, the other outlet of the tee pipe 13 is provided with a concentration tank 16, the concentration tank 16 is provided with a folding cover 17, the concentration tank 16 is provided with a feeding port 18, and the side of the concentration tank 16 is provided with a drain pipe 19;

[0032] Further, the desanders 3 are fixedly arranged on the support frame 2, the desanders 3 are a plurality of, the input pipe 5 is connected with the plurality of desanders 3 through a flow divider, the input pipe 5 is connected with the outside, and the slurry is input from the outside to the desanders 3 through the first water pump 7;

[0033] Further, the upper end of each desander 3 is connected with the output pipe 6 through an interface, and the output pipe 6 is connected with the outside;

[0034] Further, the lower end of each desander 3 is provided with a throttling device 4 through a thread, the throttling device 4 is provided with a valve, used for adjusting the flow rate of the sand discharged from the desander 3, and the lower end of each throttling device 4 is connected with the integrated pipe 8 through a pipeline, and the outlet of the integrated pipe 8 is located above the buffer structure 9;

[0035] Further, the buffer structure 9 is fixedly connected with the support frame 2, the buffer structure 9 has a closed cavity, the upper and lower ends of the buffer structure 9 are provided with electric valves, used for controlling the feeding and discharging of the buffer structure 9, and the buffer structure 9 is provided below with a receiving hopper 10, the receiving hopper 10 is fixedly arranged on the support frame 2, the bottom of the receiving hopper 10 is provided with a guide pipe, which is directed to the side wall of the distribution bin 11;

[0036] Further, the upper half of the distribution bin 11 is provided with a valve-equipped discharge pipe for discharging light impurities, the bottom of the distribution bin 11 is provided with a collection groove 12, and the two outlets of the tee pipe 13 are provided with valve bodies, used for controlling the opening and closing of the outlets;

[0037] Further, the concentration tank 16 is located on the base plate 1, the top of the concentration tank 16 is provided with an opening, the opening is provided with the folding cover 17 through a rotating shaft, the folding cover 17 is provided with a handle, the feeding port 18 is provided with a bolted cover, the side of the concentration tank 16 is provided with the drain pipe 19, the drain pipe 19 is provided with a valve body, used for discharging the liquid in the concentration tank 16, the interface between the circulation pipe 14 and the input pipe 5 is provided with a valve body, used for controlling the connection of the circulation pipe 14 with the input pipe 5, and the valve bodies of the first water pump 7 and the second water pump 15 are controlled by an external controller.

[0038] Working principle:

[0039] In use, according to the need, several sand removers 3 are installed on the support frame 2, and a throttling device 4 with a valve is installed at the bottom of each sand remover 3 by screwing, the valve is used to adjust the flow rate of the sand discharged from the sand remover 3, an input pipe 5 is installed at the upper part of the sand remover 3, a first water pump 7 is arranged on the input pipe 5, the pulp outside is input into the sand remover 3 through the first water pump 7, and the input pipe 5 can be connected with the several sand removers 3 through a flow divider, so as to ensure that the pulp can be reasonably distributed into each sand remover 3, an output pipe 6 is installed at the top end of the sand remover 3, the output pipe 6 is connected with the outside, so as to discharge the treated pulp, the first water pump 7 is controlled to be turned on, the pulp containing impurities outside is transported into each sand remover 3 through the input pipe 5 and the flow divider, since the inner wall of the sand remover 3 is a tapered smooth body, the centrifugal force generated by the tangent incoming pulp is used to remove the sand particles or impurities with large specific gravity, the pulp after the sand removal treatment is discharged from the output pipe 6 at the top end of the sand remover 3, the throttling device 4 at the lower end of the sand remover 3 is adjusted, the flow rate of the sand and the pulp discharged from the sand remover 3 is reduced, so that the sand and the pulp in the sand remover 3 can run for a longer time in the sand remover 3, more pulp is discharged, the tailings ash content of the sand remover 3 is increased from 50% to more than 70%, the mixture of the pulp and the sand discharged from the throttling device 4 enters the buffer structure 9 through the integrated pipe 8, the upper end of the buffer structure 9 is connected with the integrated pipe 8 through a pipeline, and an electric valve is arranged for control, after a certain amount of material is accumulated in the buffer structure 9, the electric valve at the upper end is closed, the electric valve at the lower end is opened, the material in the buffer structure 9 is discharged into the receiving hopper 10 through the pipeline, the process is repeated to realize periodic downward pouring, the mixture in the receiving hopper 10 enters the distribution bin 11 along the guide pipe towards the side wall of the distribution bin 11, after the mixture enters the distribution bin 11, it has a horizontal initial speed, so that the sand in the mixture quickly enters the collection tank 12, and the lighter impurities float at the uppermost end and are discharged through the valve-equipped discharge pipe in the upper half of the distribution bin 11 for discharging light impurities, at this time, the valve body of the three-way pipe 13 leading to the thickening tank 16 is opened, the sand in the collection tank 12 enters the thickening tank 16 and is enriched in the thickening tank 16, waiting for subsequent treatment, at this time, the valve body is closed, another valve body is opened, and under the action of the second pump body, the remaining pulp reenters the input pipe 5 along the circulation pipe 14 to realize recycling, in the above process, the pulp and the sand entering the distribution bin 11 from the receiving hopper 10 have a certain initial speed for separation, at the same time, during the water storage process of the buffer structure 9, the distribution bin 11 has sufficient time for separation, reducing the interference of continuous feeding on separation, the flow rate of the sand discharge is accurately controlled through the throttling device 4 to prolong the pulp residence time; the periodic dumping of the buffer structure 9 and the initial speed separation of the distribution bin 11 make the tailings ash content increase from 50% to more than 70%, reducing the subsequent treatment cost; the circulation pipe 14 is designed to reduce the pulp waste by more than 15%, and the overall sand removal efficiency is increased by 30%.

[0040] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. The various components mentioned in the present application are common techniques in the prior art, and those skilled in the art should understand that the present application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency sand removal system for pulping, comprising a substrate (1) and a support frame (2), characterized in that, A support frame (2) is provided on the substrate (1), a sand remover (3) is provided on the support frame (2), a throttle (4) is provided at the lower end of the sand remover (3), an input pipe (5) is provided at the upper part of the sand remover (3), an output pipe (6) is provided at the top of the sand remover (3), a first water pump (7) is provided on the input pipe (5), an integrated pipe (8) is provided below the throttle (4), a buffer structure (9) is provided below the integrated pipe (8), the buffer structure (9) is used to store a certain amount of mixture, a receiving funnel (10) is provided below the buffer structure (9), a distribution bin (11) is provided below the receiving funnel (10), the distribution bin (11) is used to separate the slurry and sand in the mixture, a collection trough (12) is provided at the bottom of the distribution bin (11), and a three-way pipe (13) is provided below the collection trough (12). The buffer structure (9) is fixedly connected to the support frame (2). The buffer structure (9) has a closed cavity. The upper and lower ends of the buffer structure (9) are equipped with electric valves to control the feeding and discharging of the buffer structure (9). A receiving funnel (10) is provided below the buffer structure (9). The receiving funnel (10) is fixedly installed on the support frame (2). The bottom of the receiving funnel (10) has a guide tube facing the side wall of the distribution bin (11).

2. The efficient sand removal system for pulping according to claim 1, characterized in that, One outlet of the three-way pipe (13) is provided with a circulation pipe (14), the other end of the circulation pipe (14) is connected to the input pipe (5), and a second water pump (15) is provided on the circulation pipe (14) to drive the flow of materials in the circulation pipe (14).

3. The efficient sand removal system for pulping according to claim 2, characterized in that, Another outlet of the three-way pipe (13) is provided with a concentration tank (16), the concentration tank (16) is provided with a folding cover (17), the concentration tank (16) is provided with a feeding port (18), and the concentration tank (16) is provided with a drain pipe (19) on its side.

4. The efficient sand removal system for pulping according to claim 3, characterized in that, The sand separator (3) is fixedly mounted on the support frame (2). There are several sand separators (3). The input pipe (5) is connected to several sand separators (3) through a distributor. The input pipe (5) is connected to the outside world and the slurry is input into the sand separator (3) from the outside world through the first water pump (7).

5. The efficient sand removal system for pulping according to claim 4, characterized in that, Each sand separator (3) has an interface at its upper end that connects to an output pipe (6), which is connected to the outside.

6. The efficient sand removal system for pulping according to claim 5, characterized in that, Each desander (3) has a throttle (4) threaded at its lower end. The throttle (4) has a valve to regulate the flow rate of sand discharged from the desander (3). The lower end of each throttle (4) is connected to the integrated pipe (8) via a pipe. The outlet of the integrated pipe (8) is located directly above the buffer structure (9).

7. The efficient sand removal system for pulping according to claim 6, characterized in that, The upper part of the material distribution bin (11) has a valved discharge pipe for discharging light impurities. The bottom of the material distribution bin (11) has a collection trough (12). Both outlets of the three-way pipe (13) are equipped with valve bodies for controlling the opening and closing of the outlets.

8. The efficient sand removal system for pulping according to claim 7, characterized in that, The concentration tank (16) is located on the substrate (1). The top of the concentration tank (16) has an opening, and a folding cover (17) is provided at the opening via a pivot. The folding cover (17) has a handle. The feeding port (18) has a bolt-mounted cover. A drain pipe (19) is provided in the middle of the side of the concentration tank (16). The drain pipe (19) has a valve body for discharging the liquid in the concentration tank (16). There is a valve body at the interface between the circulation pipe (14) and the input pipe (5) for controlling the connection of the circulation pipe (14) to the input pipe (5). The valve bodies of the first water pump (7) and the second water pump (15) are controlled by an external controller.

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