Papermaking sand removing machine

Abstract

The invention relates to the technical field of sand removing machines, and discloses a papermaking sand removing machine which comprises four stone tables and four main frames, each main frame is installed on the corresponding stone table, a smashing part is installed on the main frames and used for smashing tailing impurities obtained after paper pulp is subjected to sand removing, and a discharging part is installed on the smashing part and used for discharging the tailings impurities obtained after paper pulp is subjected to sand removing. The main frame is used for blocking and guiding tailing impurities after paper pulp sand removal to a crushing process, the precipitation part is mounted on the main frame and used for depositing the tailing impurities after paper pulp sand removal, the impurity removal part is mounted in the precipitation part, and the crushing part is used for crushing the tailing impurities after paper pulp sand removal, so that the impurities are uniform in size and easier to flow; according to the invention, impurities with different sizes are prevented from blocking the precipitation pipeline and the slag discharge pipeline, the crushed mud and sand impurities are uniform, the problems of pipeline blockage and discharge stagnation can be effectively reduced, and the smoothness and the discharge efficiency of the pipeline are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sand removers, in particular to a papermaking sand remover. Background Art

[0002] There are two main types of pulping in the prior art, one is raw material pulping, the other is waste paper pulping. The industrial waste produced often contains a lot of mud, sand and impurities, which need to be desanded and removed.

[0003] According to the Chinese patent publication number CN206986599U, the patent provides a paper pulp desander, including a cyclone desander, a feed pipe is provided on the upper part of the cyclone desander, a guide pipe is provided on the top of the cyclone desander, a sand outlet is provided at the bottom of the cyclone desander, the guide pipe is connected with a circulation pipe, the circulation pipe is connected with the feed pipe, and a circulation valve is provided on the circulation pipe; the guide pipe is connected with a discharge pipe, and a discharge valve is provided on the discharge pipe. The sand content of the pulp after desandering can meet the standard through a detection device, and the desandering effect is good. The circulating desander is adopted to avoid incomplete desandering and waste of multiple desandering caused by multiple cyclone desanders connected in series for multi-stage desandering of the pulp, thereby saving energy; and the desandering effect can be achieved with only one cyclone desander, thus saving equipment and occupying a small space.

[0004] However, the tailings produced during papermaking sand removal contain a large amount of impurities such as mud, sand and glass, as well as some pulp fibers. Since the sizes of the impurities such as mud and sand vary, they are easy to block the sedimentation pipe and the slag discharge pipe, causing work stagnation and frequent maintenance problems, reducing work efficiency. Therefore, a papermaking sand remover is proposed to solve the above problems. Summary of the invention

[0005] Technical issues solved In view of the deficiencies in the prior art, the present invention provides a papermaking sand remover, which solves the problem that pulping contains a lot of mud, sand and impurity filtrate of different sizes, which easily clogs the sedimentation pipeline and the slag discharge pipeline and pollutes the environment.

[0006] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a papermaking desander, comprising four stone platforms and four main frames, each of the main frames being respectively mounted on each stone platform, a crushing part being mounted on the main frame, for crushing tailings impurities after desanding of pulp, a feeding part being mounted on the crushing part, for blocking and guiding tailings impurities after desanding of pulp to a crushing process, a sedimentation part being mounted on the main frame, for depositing tailings impurities after desanding of pulp, a de-impurity part being mounted inside the sedimentation part, for compacting tailings impurities and simultaneously cleaning residual tailings impurities by vibration and scraping, and a filtering part being mounted inside the sedimentation part, for filtering out impurities and good pulp in the original pulp.

[0007] Preferably, the crushing part includes a frame, which is installed between two main frames. A crushing box and a motor are installed on the frame. The inner wall of the crushing box is rotatably connected to two pressure rollers, one end of the two pressure rollers are movable through the crushing box and are sleeved with gears, and the gears at the ends of the two pressure rollers are meshed, one end of one of the pressure rollers away from the gear is movable through the crushing box and is fixedly connected to the output shaft of the motor, and the bottom of the crushing box is connected and equipped with a slag outlet.

[0008] Preferably, the unloading part includes two support plates, the two support plates are fixedly connected to the outer wall of the crushing box, a bidirectional screw is rotatably connected between the two support plates, two ends of the bidirectional screw respectively movably penetrate the support plates and move away from each other, the two penetrating ends of the bidirectional screw are fixedly connected with rotating pieces, the two penetrating ends of the bidirectional screw are threadedly sleeved with support arms, blocking plates are slidably penetrated on both sides of the crushing box, the sides of the two blocking plates that are away from each other are respectively fixedly connected to the support arms on the same side, and the sides of the two blocking plates that are close to each other are located inside the crushing box and abut against each other.

[0009] Preferably, the sedimentation part includes a U-frame, which is installed between two main frames. An electric push rod is installed through the U-frame. The top end of the inner rod of the electric push rod is fixedly connected to a cross beam. The bottom of the cross beam is fixedly connected to two sliding rods. Sedimentation cylinders are arranged on the two sliding rods. The bottom ends of the two sliding rods slide through the interior of the sedimentation cylinder. A slurry inlet is installed on the top of the sedimentation cylinder, and a slurry outlet is installed on the outer wall of the sedimentation cylinder.

[0010] Preferably, the bottom opening of the sedimentation cylinder is provided, and the bottom of the sedimentation cylinder extends into the crushing box, the bottom opening of the sedimentation cylinder is fitted with the top of two baffle plates, and the bottom of the two baffle plates is fitted with the top surface of the outer wall of the two pressure rollers.

[0011] Preferably, the impurity removal part includes a pressure plate, which is located inside the sedimentation cylinder. The pressure plate and the top surface are conical structures, and two gaskets are symmetrically installed on the conical surface of the pressure plate. The two gaskets are respectively fixedly connected to the through ends of the two sliding rods. Four circulation holes are opened around the pressure plate, and grooves are opened on both sides of the inner wall of each circulation hole. Each of the grooves is connected to the bottom of the pressure plate, and a baffle is arranged between the two grooves in each circulation hole. Torsion springs are arranged on both sides of each baffle, and are elastically connected to the corresponding inner wall of the groove through the torsion springs.

[0012] Preferably, a mounting plate is fixedly connected to the bottom surface of the pressure plate, a rod sleeve is fixedly connected between every two mounting plates, a reset rod is slidably connected to the inner wall of each rod sleeve, a billiard ball is fixedly connected to the end of each reset rod, and a spring is elastically connected between each reset rod and the inner wall of the rod sleeve.

[0013] Preferably, the filter portion includes a filter cartridge, which is inserted into the inner wall of the sedimentation cylinder through the bottom opening of the sedimentation cylinder, and the outer wall of the filter cartridge is fitted with the inner wall of the sedimentation cylinder. A sand separator is integrally connected to the top of the filter cartridge, and the sand separator is aligned with the slurry outlet and fits at the connection between the sedimentation cylinder and the slurry outlet. The inner wall array of the sand separator is provided with filter holes, and the filter holes are all connected to the slurry outlet. The inner wall array of the filter cartridge is provided with collision grooves, and the array position of the collision grooves is the same as the array position of the filter holes, and the array position of the billiard balls is the same as the array position of the filter holes.

[0014] Preferably, the crushing section, unloading section, sedimentation section, impurity removal section and filtering section together constitute a unilateral sand removal mechanism. There are six unilateral sand removal mechanisms in total and they are symmetrically distributed on both sides of the tops of four stone platforms. Every two unilateral sand removal mechanisms are symmetrically installed between every two main frames.

[0015] Preferably, two raw slurry inlet pipes are installed on the top of the four main frames, and six raw slurry connecting pipes corresponding to the slurry inlets in the six single-sided sand removal mechanisms are installed on the two raw slurry inlet pipes in common. Good slurry outlet pipes are installed through the four main frames, and six good slurry connecting pipes corresponding to the slurry outlets in the six single-sided sand removal mechanisms are installed on the outer walls of the good slurry outlet pipes in common. Slag discharge pipes are installed on both sides of the four main frames, and six slag discharge connecting pipes corresponding to the slag outlets in the six single-sided sand removal mechanisms are installed on the two slag discharge pipes in total.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a papermaking sand remover, which has the following beneficial effects: 1. The papermaking desander adopts a crushing part to crush the tailing impurities after pulp desanding, so that the impurities are uniform in size and easier to flow, avoiding the blockage of the sedimentation pipe and the slag pipe by impurities of different sizes. The crushed mud and sand impurities are uniform, which can effectively reduce the problems of pipeline blockage and discharge stagnation, and improve the pipeline patency and discharge efficiency.

[0017] 2. The papermaking sand remover uses a pressure plate in the impurity removal part to press down the tailings impurities and provide downward pressure, so that the tailings impurities can flow downward quickly and be discharged. At the same time, the remaining tailings impurities are cleaned synchronously by vibration and scraping, which further improves the tailings discharge speed and avoids hanging on the wall. When discharging mud and sand impurities, the pressure plate generates downward pressure on the mud and sand impurities, avoiding the problem of compacted mud and sand impurities hanging on the wall and blocking, thereby improving the thoroughness of discharging mud and sand impurities.

[0018] 3. The papermaking sand remover adopts a sedimentation cylinder with a larger capacity in the sedimentation part, which is easier to deposit a large amount of filter tailings, thereby increasing the sedimentation capacity of the tailings. The collision ball in the filter part reciprocates in and out of the filter hole and the collision groove under the elastic action of the spring, forming collision and vibration, which causes the wall hanging and residual adhered mud and sand impurities to fall off, realizing the internal self-cleaning effect after each operation, reducing the frequency of manual daily maintenance and alleviating the labor burden.

[0019] 4. The papermaking desander adopts the valve on each raw pulp connecting pipe that can be opened and closed freely. When a single-side desander mechanism fails, the corresponding valve can be closed for maintenance without affecting the normal operation of other mechanisms, making the papermaking desander operation safer, more efficient and convenient. The various structures are modularized, the frame and U frame are detachable, the filter cartridge can be pulled out, and the pressure plate can be cleaned and replaced independently, which improves the convenience of maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an overall front axial view of a papermaking sand removal machine proposed by the present invention; Figure 2 This is an overall rear axial view of a papermaking sand removal machine proposed by the present invention; Figure 3 A connection diagram of a stone platform and a main frame of a papermaking sand removal machine proposed by the present invention; Figure 4 A side axial view of a crushing part, a feeding part and a sedimentation part of a papermaking desander proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a papermaking sand remover proposed by the present invention, showing the other side axial view of the crushing part, the feeding part and the sedimentation part; Figure 6 A schematic diagram of the internal structure of a crushing box of a papermaking desander proposed by the present invention; Figure 7 A connection diagram of a motor and a pressure roller of a papermaking sand removal machine proposed by the present invention; Figure 8 This is an internal cross-sectional view of a sedimentation cylinder of a papermaking desander proposed by the present invention; Fig. 9 This is a schematic structural diagram of a filter cartridge for a papermaking sand removal machine proposed by the present invention; Fig.10 This is a schematic diagram of the internal structure of a filter cartridge for a papermaking sand removal machine proposed by the present invention; Fig.11 A top axial view of a debris removal part of a papermaking desander proposed by the present invention; Fig.12 This is an exploded view of the bottom of the impurity removal section of a papermaking desander proposed by the present invention.

[0021] In the figure: 1, stone platform; 2, main frame; 3, crushing part; 31, frame; 32, crushing box; 33, motor; 34, pressure roller; 35, gear; 36, slag outlet; 4, unloading part; 41, support plate; 42, two-way screw; 43, rotating plate; 44, support arm; 45, blocking plate; 5, sedimentation part; 51, U frame; 52, electric push rod; 53, cross beam; 54, sliding rod; 55, sedimentation cylinder; 56, slurry inlet; 57, slurry outlet; 6 , impurity removal part; 61, pressure plate; 62, gasket; 63, flow hole; 64, groove; 65, baffle; 66, mounting plate; 67, rod sleeve; 68, reset rod; 69, billiard ball; 610, spring; 7, filter part; 71, filter cartridge; 72, sand isolation plate; 73, filter hole; 74, collision groove; 8, raw pulp inlet pipeline; 9, raw pulp connecting pipe; 10, good pulp outlet pipeline; 11, good pulp connecting pipe; 12, slag discharge pipeline; 13, slag discharge connecting pipe. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] See also Figure 1-12The present invention provides a technical solution: a papermaking sand removing machine, comprising four stone platforms 1 and four main frames 2, each main frame 2 being respectively mounted on each stone platform 1, a crushing part 3 being mounted on the main frame 2, for crushing tailing impurities after desanding of pulp, a feeding part 4 being mounted on the crushing part 3, for blocking and guiding tailing impurities after desanding of pulp to a crushing process, a sedimentation part 5 being mounted on the main frame 2, for depositing tailing impurities after desanding of pulp, a de-impurity part 6 being mounted inside the sedimentation part 5, for compacting tailing impurities, and simultaneously cleaning the residual tailing impurities by vibration and scraping, and a filtering part 7 being mounted inside the sedimentation part 5, for filtering out impurities and good pulp in the original pulp.

[0024] In the present invention, in order to prevent pulp impurities of different sizes from clogging the pipeline, this case directly crushes the impurities during the discharge of impurities. The crushing part 3 of this case includes a frame 31, which is installed between the two main frames 2. A crushing box 32 and a motor 33 are installed on the frame 31. The inner wall of the crushing box 32 is rotatably connected to two pressure rollers 34. One end of the two pressure rollers 34 can move through the crushing box 32 and is sleeved with gears 35. The gears 35 at the ends of the two pressure rollers 34 are meshed. The meshing of the double gears 35 can cause the double pressure rollers 34 to rotate with each other, thereby achieving the effect of crushing impurities. One end of one of the pressure rollers 34 away from the gear 35 can move through the crushing box 32 and is fixedly connected to the output shaft of the motor 33. The pressure roller 34 is driven by the motor 33, thereby achieving the purpose of automatic crushing. The bottom of the crushing box 32 is connected and installed with a slag outlet 36. The crushed impurities are uniform in size and easier to flow, and are discharged through the slag outlet 36.

[0025] In order to facilitate the sedimentation and slag discharge, the unloading part 4 in this case includes two support plates 41, the two support plates 41 are fixedly connected to the outer wall of the crushing box 32, and a bidirectional screw 42 is rotatably connected between the two support plates 41. The two ends of the bidirectional screw 42 are movably penetrated through the support plates 41 and away from each other, and the two penetration ends of the bidirectional screw 42 are fixedly connected with a rotating piece 43. The two penetration ends of the bidirectional screw 42 are threadedly sleeved with support arms 44, and both sides of the crushing box 32 are slidably penetrated by blocking plates 45. The sides of the two blocking plates 45 that are away from each other are fixedly connected to the support arms 44 on the same side, and the sides of the two blocking plates 45 that are close to each other are located inside the crushing box 32 and abut against each other.

[0026] In this embodiment, in order to increase the capacity of the deposited tailings, the sedimentation part 5 of this case includes a U frame 51, which is installed between the two main frames 2. An electric push rod 52 is installed through the U frame 51. The top of the inner rod of the electric push rod 52 is fixedly connected to a cross beam 53. The bottom of the cross beam 53 is fixedly connected to two sliding rods 54. A sedimentation cylinder 55 is arranged on the two sliding rods 54. The sedimentation cylinder 55 has a larger capacity than several small desanders and is easier to deposit a large amount of filtered tailings. The bottom ends of the two sliding rods 54 are slidably penetrated into the sedimentation cylinder 55. The top of the sedimentation cylinder 55 is connected and installed with a pulp inlet 56. The pulp slurry is discharged from the pulp inlet 56 into the sedimentation cylinder 55. In the embodiment, the outer wall of the sedimentation cylinder 55 is connected to be provided with a slurry outlet 57, and the filtered good slurry is automatically discharged from the slurry outlet 57. The bottom opening of the sedimentation cylinder 55 is set, and the bottom of the sedimentation cylinder 55 extends into the crushing box 32. The bottom opening of the sedimentation cylinder 55 is fitted with the top of the two blocking plates 45. The blocking plates 45 are abutted against each other to seal the bottom opening of the sedimentation cylinder 55, thereby preventing the original slurry from spilling and the tailings from falling. The bottom of the two blocking plates 45 is fitted with the top surfaces of the outer walls of the two pressing rollers 34. When the blocking plates 45 are fitted together up and down, when the two blocking plates 45 are away from each other, the tailings can stably fall between the two pressing rollers 34 and will not splash to other places.

[0027] It is worth noting that in order to further increase the tailing discharge speed, avoid wall hanging, and perform automatic cleaning effect in each sand removal operation, the impurity removal part 6 of this case includes a pressure plate 61, and the pressure plate 61 is located inside the sedimentation cylinder 55. The pressure plate 61 can press down the tailing impurities to provide downward pressure, making it easier for the tailing impurities to flow downward quickly and be discharged. The pressure plate 61 and the top surface are conical structures. The surface of the conical structure can guide the flow trajectory of the raw slurry after entering from the slurry inlet 56, avoiding the problem of stagnation of the raw slurry. Two gaskets 62 are symmetrically installed on the conical surface of the pressure plate 61. The two gaskets 62 are respectively fixedly connected to the through ends of the two sliding rods 54. The pressure plate 61 can be detachably installed through the gasket 62, which is convenient for disassembly, cleaning or replacement of the pressure plate 61 during maintenance. Four flow holes 63 are opened around the pressure plate 61, each flow hole Grooves 64 are provided on both sides of the inner wall of the hole 63, and each groove 64 is connected to the bottom of the pressure plate 61. A baffle 65 is provided between the two grooves 64 in each flow hole 63, and torsion springs are provided on both sides of each baffle 65, and are elastically connected to the corresponding inner wall of the groove 64 through the torsion spring. The torsion force of the torsion spring is upward, which can prompt the baffle 65 to always fit the inner wall of the groove 64. A mounting piece 66 is fixedly connected to the bottom surface of the pressure plate 61, and a rod sleeve 67 is fixedly connected between every two mounting pieces 66. A reset rod 68 is slidably connected to the inner wall of each rod sleeve 67, and a billiard ball 69 is fixedly connected to the end of each reset rod 68. A spring 610 is elastically connected between each reset rod 68 and the inner wall of the rod sleeve 67, and the spring 610 can prompt the reset rod 68 to elastically telescopically move in the rod sleeve 67.

[0028] In order to filter out a large amount of good pulp and impurities more quickly and further achieve the effect of self-cleaning after filtration, the filter unit 7 of this case includes a filter cartridge 71, which is inserted into the inner wall of the sedimentation cylinder 55 through the bottom opening of the sedimentation cylinder 55. The outer wall of the filter cartridge 71 fits with the inner wall of the sedimentation cylinder 55. The top of the filter cartridge 71 is integrally connected with a sand separator 72, which is aligned with the pulp outlet 57 and fits at the connection between the sedimentation cylinder 55 and the pulp outlet 57. The inner wall array of the sand separator 72 is provided with filter holes 73, and the filter holes 73 are all connected to the pulp outlet 57. The raw pulp enters the filter. The liquid level in the cylinder 71 is caused to rise, and impurities and good pulp are filtered after passing through the filter hole 73. The inner wall array of the filter cylinder 71 is provided with collision grooves 74, and the array position of the collision grooves 74 is the same as the array position of the filter hole 73. The array position of the billiard ball 69 is the same as the array position of the filter hole 73. When the billiard ball 69 contacts the arc surface of the inner wall of the sand isolation plate 72, it will produce extrusion to cause the reset rod 68 to contract. The billiard ball 69 contacts the filter hole 73 to cause the reset rod 68 to bounce into the hole to impact and generate vibration. When the billiard ball 69 contacts the inner wall of the filter cylinder 71, it is squeezed and bounces into the collision groove 74 to generate impact vibration.

[0029] It is worth noting that in order to speed up the papermaking sand removal efficiency in an industrial environment, the crushing part 3, the feeding part 4, the sedimentation part 5, the impurity removal part 6 and the filtering part 7 in this case together form a single-sided sand removal mechanism. There are a total of six single-sided sand removal mechanisms and they are symmetrically distributed on both sides of the tops of the four stone platforms 1. Every two single-sided sand removal mechanisms are symmetrically installed between every two main frames 2. Two raw pulp inlet pipes 8 are installed on the tops of the four main frames 2. Six raw pulp connecting pipes 9 corresponding to the pulp inlets 56 in the six single-sided sand removal mechanisms are installed on the two raw pulp inlet pipes 8. The raw pulp enters each raw pulp from the raw pulp connecting pipes 9. Batch operations are carried out in the sedimentation cylinder 55, and good slurry outlet pipes 10 are installed through the four main frames 2. The outer walls of the good slurry outlet pipes 10 are connected and installed with six good slurry connecting pipes 11 corresponding to the slurry outlets 57 in the six unilateral sand removal mechanisms. The filtered good slurry is discharged from each corresponding good slurry connecting pipe 11 into the good slurry outlet pipe 10, and slag outlet pipes 12 are installed on both sides of the four main frames 2. Six slag outlet connecting pipes 13 corresponding to the slag outlets 36 in the six unilateral sand removal mechanisms are installed on the two slag outlet pipes 12, and the crushed impurities enter the slag outlet pipe 12 through the slag outlet connecting pipes 13 for discharge.

[0030] Working principle: in this case, the stone platform 1, the main frame 2, the raw pulp inlet pipe 8, the good pulp outlet pipe 10 and the slag outlet pipe 12 are all components of the prior art long fiber one-stage slag remover, and are commonly used and common technical products by technicians in this field, so no more details are given. By allowing the pulp raw pulp to flow in the raw pulp inlet pipe 8 and enter the corresponding sedimentation cylinder 55 through the raw pulp connecting pipe 9, after the raw pulp enters the sedimentation cylinder 55 from the pulp inlet 56, it first contacts the conical surface of the pressure plate 61 and diffuses and flows around along the conical surface. The diameter of the pressure plate 61 is smaller than the diameter of the inner wall of the sedimentation cylinder 55, so the raw pulp can flow from all sides to the filter cylinder 71. At the same time, in actual application , each raw pulp connecting pipe 9 should be equipped with a corresponding valve to control the raw pulp flow rate according to the opening and closing size of the valve. When the flow rate increases, the pressure of the raw pulp accumulated in the upper space of the pressure plate 61 prompts each baffle 65 to be forced to flip open, thereby opening each flow hole 63 to improve the flow efficiency of the raw pulp. On the contrary, when the raw pulp flow rate is small, the raw pulp flows around the conical surface of the pressure plate 61, and the baffle 65 does not flip or flips to a small degree, thereby realizing adaptive control of the flow rate according to the size of the raw pulp flow, improving the safety of the raw pulp flow, reducing the impact and amplitude of the raw pulp falling, and avoiding a large amount of mud and impurities splashing and congestion.

[0031] When the original slurry is filled in the sedimentation cylinder 55, the liquid level of the original slurry gradually rises until it is aligned with the filter hole 73 and begins to be filtered. The mud and sand impurities are blocked in the filter cylinder 71, and the good slurry enters the good slurry outlet pipe 10 through the good slurry connecting pipe 11 for recovery. The mud and sand impurities are gradually deposited inside the filter cylinder 71 and the lower opening of the sedimentation cylinder 55 is blocked by the blocking plate 45, so that the deposition amount of mud and sand impurities increases. At this time, the inner rod of the electric push rod 52 can be controlled to contract, thereby prompting the cross beam 53 to drive the slide rod 54 to descend, and then drive the pressure plate 61 to descend After entering the filter cartridge 71, the diameter of the pressure plate 61 in this case should match the inner wall of the filter cartridge 71, that is, it can have a sliding fit effect. At this time, the pressure plate 61 slides against the inner wall of the filter cartridge 71 and presses down the mud and sand impurities. The baffle 65 is flipped to the groove 64 under the pressure of the mud and sand impurities below and fits into the closed flow hole 63 to prevent the mud and sand impurities from squeezing upward and overflowing onto the conical surface of the pressure plate 61. The compacted mud and sand impurities are denser and the deposition space is further increased, making the deposition operation more durable and the deposition amount larger, further increasing the workload.

[0032] When the filter barrel 71 is filled with mud and sand impurities, the raw slurry inlet pipe 8 can be closed to stop the raw slurry transportation, and the pressure roller 34 can be driven to rotate by the motor 33, and the two pressure rollers 34 are caused to rotate relative to each other under the meshing of the gear 35, and then the rotating plate 43 is rotated to cause the bidirectional screw 42 to rotate on the support plate 41, and the distance between the two support arms 44 is adjusted, thereby driving the two blocking plates 45 to separate from each other, exposing the bottom opening of the sedimentation barrel 55. After the blocking plate 45 is opened, it still remains in contact with the lower barrel opening of the filter barrel 71 to prevent the filter barrel 71 from falling. At this time, the deposited mud and sand impurities fall downward to between the two pressure rollers 34 for crushing, and cooperate with the contraction operation of the electric push rod 52 to always cause the pressure plate 61 to generate downward pressure on the mud and sand impurities, thereby avoiding the problem of the compacted mud and sand impurities hanging on the wall and being blocked, ensuring that the mud and sand impurities can be smoothly separated from the filter barrel 71, thereby improving the thoroughness of the discharge of mud and sand impurities.

[0033] After the mud and sand impurities in the filter cartridge 71 are emptied, the electric push rod 52 performs telescopic reciprocating motion, thereby causing the pressure plate 61 to reciprocate on the inner wall of the filter cartridge 71, causing the billiard ball 69 to reciprocate in and out of each filter hole 73 and the collision groove 74 under the elastic action of the spring 610, thereby forming regular collisions and vibrations, causing the wall-hanging and residual adhered mud and sand impurities to further fall from the filter cartridge 71, further improving the thoroughness of the discharge of mud and sand impurities, and at the same time, through vibration knocking and repeated scraping of the pressure plate 61 against the inner wall of the filter cartridge 71, the internal self-cleaning effect can be achieved after each operation, preparing for the next operation, reducing the frequency of manual daily maintenance, and alleviating the labor burden.

[0034] The crushed mud and sand impurities are uniform in size and easier to flow, and enter the slag discharge pipe 12 through the slag discharge port 36 from the slag discharge connecting pipe 13 for discharge. The uniform mud and sand can effectively reduce the problems of pipeline blockage and discharge stagnation, and improve the smoothness of the pipeline and the discharge efficiency. On the other hand, the frame 31 and U frame 51 of this case are both detachably installed on the main frame 2. When major maintenance operations are required, they can be freely disassembled. After disassembly, the filter cartridge 71 can be pulled out of the sedimentation cartridge 55. The pressure plate 61 can also be disassembled through the gasket 62 thread to achieve the effect of independent cleaning and replacement. The modularization between the various structures improves the convenience during maintenance.

[0035] The corresponding valves on each raw pulp connecting pipe 9 can be opened and closed freely. If one of the unilateral sand removal mechanisms fails and needs maintenance and inspection, the valve corresponding to the position can be closed to prevent the raw pulp from flowing at the position. At this time, the maintenance work at the faulty position can be carried out while the other unilateral sand removal mechanisms are still working normally, without delaying each other, making the papermaking sand removal operation safer, more efficient and convenient.

[0036] The motor 33 involved in this case can be a YCT series speed-regulating motor produced by Shanghai Fengxin Transmission Machinery Co., Ltd., and its supporting circuits and power supplies are also provided by the manufacturer. It can be fully implemented by those skilled in the art without further elaboration.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A papermaking sand remover, characterized in that: include: Stone platforms (1), four in number; Main frames (2), the number of which is four, each of which is installed on each stone platform (1); A crushing unit (3) is installed on the main frame (2) and is used to crush impurities in the tailings after the pulp is desanded; A material discharge section (4) is installed on the crushing section (3) and is used to block and guide tailings impurities after the pulp is desanded to the crushing process; A sedimentation section (5) installed on the main frame (2) and used for sedimentation of tailings and impurities after desanding of pulp; An impurity removal section (6) is installed inside the sedimentation section (5) and is used to compact tailing impurities and simultaneously clean the remaining tailing impurities by vibration and scraping; The filtering part (7) is installed inside the sedimentation part (5) and is used to filter out impurities and good pulp in the raw pulp.

2. A papermaking sand remover according to claim 1, characterized in that: The crushing section (3) comprises a frame (31), the frame (31) being mounted between two main frames (2), a crushing box (32) and a motor (33) being mounted on the frame (31), the inner wall of the crushing box (32) being rotatably connected to two pressure rollers (34), one end of each of the two pressure rollers (34) being movably passed through the crushing box (32) and being sleeved with a gear (35), the gears (35) at the ends of the two pressure rollers (34) being meshed with each other, one end of one of the pressure rollers (34) being away from the gear (35) being movably passed through the crushing box (32) and being fixedly connected to the output shaft of the motor (33), and the bottom of the crushing box (32) being connected and being mounted with a slag outlet (36).

3. A papermaking sand remover according to claim 2, characterized in that: The unloading portion (4) comprises two support plates (41), the two support plates (41) are fixedly connected to the outer wall of the crushing box (32), a bidirectional screw (42) is rotatably connected between the two support plates (41), two ends of the bidirectional screw (42) respectively movably penetrate the support plates (41) and move away from each other, the two penetration ends of the bidirectional screw (42) are both fixedly connected with a rotating piece (43), the two penetration ends of the bidirectional screw (42) are both threadedly sleeved with a support arm (44), both sides of the crushing box (32) are slidably penetrated by a blocking plate (45), the two sides of the two blocking plates (45) that are away from each other are respectively fixedly connected to the support arm (44) on the same side, and the two sides of the two blocking plates (45) that are close to each other are located inside the crushing box (32) and abut against each other.

4. A papermaking sand remover according to claim 3, characterized in that: The sedimentation part (5) comprises a U frame (51), wherein the U frame (51) is installed between two main frames (2), an electric push rod (52) is installed through the U frame (51), the top end of the inner rod of the electric push rod (52) is fixedly connected to a cross beam (53), the bottom of the cross beam (53) is fixedly connected to two sliding rods (54), a sedimentation barrel (55) is arranged on the two sliding rods (54), the bottom ends of the two sliding rods (54) are slidably penetrated into the sedimentation barrel (55), the top of the sedimentation barrel (55) is connected to a slurry inlet (56), and the outer wall of the sedimentation barrel (55) is connected to a slurry outlet (57).

5. A papermaking sand remover according to claim 4, characterized in that: The bottom opening of the sedimentation cylinder (55) extends into the crushing box (32). The bottom opening of the sedimentation cylinder (55) fits with the tops of two blocking plates (45), and the bottoms of the two blocking plates (45) fit with the top surfaces of the outer walls of the two pressure rollers (34).

6. A papermaking sand remover according to claim 5, characterized in that: The impurity removal part (6) includes a pressure plate (61), and the pressure plate (61) is located inside the sedimentation cylinder (55). The pressure plate (61) and the top surface are conical structures. Two gaskets (62) are symmetrically installed on the conical surface of the pressure plate (61). The two gaskets (62) are respectively fixedly connected to the through ends of the two slide bars (54). Four circulation holes (63) are arranged around the pressure plate (61). Both sides of the inner wall of each circulation hole (63) are provided with grooves (64). Each of the grooves (64) is connected to the bottom of the pressure plate (61). A baffle (65) is arranged between the two grooves (64) in each circulation hole (63). Both sides of each baffle (65) are provided with torsion springs and are elastically connected to the inner wall of the corresponding groove (64) through the torsion springs.

7. A papermaking sand remover according to claim 6, characterized in that: A mounting plate (66) is fixedly connected to the bottom surface of the pressure plate (61), a rod sleeve (67) is fixedly connected between every two mounting plates (66), a reset rod (68) is slidably connected to the inner wall of each rod sleeve (67), a billiard ball (69) is fixedly connected to the end of each reset rod (68), and a spring (610) is elastically connected between each reset rod (68) and the inner wall of the rod sleeve (67).

8. A papermaking sand remover according to claim 7, characterized in that: The filter portion (7) comprises a filter cartridge (71), the filter cartridge (71) being inserted into the inner wall of the sedimentation cylinder (55) through the bottom opening of the sedimentation cylinder (55), the outer wall of the filter cartridge (71) being fitted with the inner wall of the sedimentation cylinder (55), the top of the filter cartridge (71) being integrally connected with a sand barrier (72), the sand barrier (72) being aligned with the slurry outlet (57) and fitted at the connection between the sedimentation cylinder (55) and the slurry outlet (57), the inner wall array of the sand barrier (72) being provided with filter holes (73), the filter holes (73) being connected with the slurry outlet (57), the inner wall array of the filter cartridge (71) being provided with collision grooves (74), the array position of the collision grooves (74) being the same as the array position of the filter holes (73), and the array position of the collision balls (69) being the same as the array position of the filter holes (73).

9. A papermaking sand remover according to claim 8, characterized in that: The crushing section (3), the material discharge section (4), the sedimentation section (5), the impurity removal section (6) and the filtering section (7) together form a single-sided sand removal mechanism. There are six single-sided sand removal mechanisms in total and they are symmetrically distributed on both sides of the top of the four stone platforms (1). Every two of the single-sided sand removal mechanisms are symmetrically installed between every two main frames (2).

10. A papermaking sand remover according to claim 9, characterized in that: Two raw pulp inlet pipes (8) are installed on the top of the four main frames (2), and six raw pulp connecting pipes (9) corresponding to the pulp inlets (56) in the six unilateral sand removal mechanisms are installed on the two raw pulp inlet pipes (8); a good pulp outlet pipe (10) is installed through the four main frames (2), and six good pulp connecting pipes (11) corresponding to the pulp outlets (57) in the six unilateral sand removal mechanisms are installed on the outer walls of the good pulp outlet pipes (10); slag outlet pipes (12) are installed on both sides of the four main frames (2), and six slag outlet connecting pipes (13) corresponding to the slag outlets (36) in the six unilateral sand removal mechanisms are installed on the two slag outlet pipes (12).

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