Sludge scraping device suitable for closed sludge tank

Abstract

The invention belongs to the technical field of sludge scraping devices, and particularly relates to a sludge scraping device suitable for a closed sludge tank. The sludge scraping device is mounted in a sludge tank, and comprises a power system, a sludge scraping device and a driving system, and the power system is arranged on the outer side of the sludge tank; the transmission system is arranged in the sludge tank, the transmission system is provided with an input end and an output end, and the input end of the transmission system is connected with the power system through a driving rod; the sludge scraping system comprises a scraper assembly and guide rail pieces fixedly installed on the two sides of the sludge tank, the two ends of the scraper assembly are slidably installed in the guide rail pieces respectively, and the scraper assembly is connected with the output end of the transmission system; the sealing system is arranged at the joint of the driving rod and the sludge tank. According to the sludge scraping device, through cooperative work of the independent power system, the transmission system and the sludge scraping system, power can be more efficiently converted into motion required by sludge scraping operation, so that the sludge scraping operation is smoother, and the sludge treatment efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sludge scraping devices, in particular to a sludge scraping device suitable for a closed sludge pool. Background Art

[0002] In the field of radioactive waste liquid treatment, precipitation is a common method to remove radioactive elements from waste liquid. In this process, a large amount of sediment will be produced, and most of these sediments have a high water content and need to be dehydrated for subsequent storage and disposal. In order to better connect with subsequent processes, the sediment can be temporarily stored in a closed sludge tank with horizontal flow.

[0003] As an important part of the sludge pool, the scraper device is used to scrape the sludge (sediment) sent from the upper process from the diversion area by mechanical force and transport it to the sludge hopper or sludge collection pit to reduce the deposition of sludge (sediment) in the diversion area. Generally speaking, the scraper device is divided into a power part and an execution part. A part of the power part is set outside the sludge pool, and the execution part performs the scraping operation in the sludge pool. However, the traditional scraper device is only directly connected to the execution part through a drive rod, etc. The sealing of this connection method cannot be guaranteed and is not suitable for use in a closed sludge pool containing radioactive waste. Due to the potential hazards of radioactive waste, for example, the sediment produced by the treatment of radioactive waste liquid often has a certain degree of radioactivity. During the treatment process, the connection between the drive rod of the scraper device and the sludge pool is a weak link and gaps are very likely to appear. Once a gap is generated, radioactive sludge may leak from it, thereby polluting the surrounding operating environment, which will undoubtedly pose a serious threat to the ecological environment and human health, and may cause a series of unpredictable consequences.

[0004] The other part of the power part is set inside the sludge tank, which is easily corroded by the sludge, shortening the life of the components, often causing transmission failures, reducing treatment efficiency and increasing costs. In addition, the power part is directly transmitted to the execution part, that is, the scraper part is connected, and the scraper part has poor stability.

[0005] Based on this, the present invention provides a novel sludge scraping device suitable for a closed sludge tank to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a scraper device suitable for a closed sludge pool. The scraper device can more efficiently convert power into the movement required for the scraping operation through the coordinated work of an independent power system, a transmission system and a scraper system, so that the scraping work is smoother and the sludge treatment efficiency is improved; and the setting of a sealing system is added to the scraper device, which effectively avoids the problem of sludge leakage, not only ensures the treatment environment in the sludge pool, but also meets environmental protection requirements and prevents pollution to the surrounding environment.

[0007] The present invention adopts the following technical solution: a sludge scraping device suitable for a closed sludge tank, installed in the sludge tank, the sludge scraping device comprising:

[0008] A power system, wherein the power system is arranged outside the sludge tank;

[0009] A transmission system, wherein the transmission system is arranged in the sludge tank, the transmission system has an input end and an output end, and the input end of the transmission system is connected to the power system through a driving rod;

[0010] A sludge scraping system, the sludge scraping system comprising a scraper assembly and guide rails fixedly mounted on both sides of the sludge tank, the two ends of the scraper assembly are respectively slidably mounted in the guide rails, and the scraper assembly is connected to the output end of the transmission system;

[0011] A sealing system is provided at the connection between the driving rod and the sludge pool.

[0012] Further, the transmission system includes a first connecting rod, a second connecting rod, a first X-shaped shear arm assembly, a second X-shaped shear arm assembly, a third connecting rod, a fourth connecting rod and a base;

[0013] Wherein, the first X-shaped shear arm assembly has a fixed hinge point, two first input free ends, and two first output free ends; the second X-shaped shear arm assembly has a hinge point, two second input free ends, and two second output free ends;

[0014] One end of the first connecting rod and the second connecting rod are hinged to the driving rod, and the other ends are respectively hinged to the two first input free ends of the first X-type shear arm assembly; the fixed hinge point of the first X-type shear arm assembly is fixed in the sludge tank, the two first output free ends of the first X-type shear arm assembly are respectively hinged to the two second input free ends of the second X-type shear arm assembly, and the two second output free ends of the second X-type shear arm assembly are respectively hinged to one end of the third connecting rod and the fourth connecting rod; the other ends of the third connecting rod and the fourth connecting rod are both hinged to the scraper assembly.

[0015] Furthermore, the fixed hinge point of the first X-shaped shear arm assembly is arranged at a position close to the first input free end.

[0016] Furthermore, the power system comprises:

[0017] A power member, the power member is used to provide power;

[0018] A box body, wherein the box body has a containing space;

[0019] A main power mechanism, which is installed in the accommodating space of the box body and is transmission-connected to the power member;

[0020] An eccentric power mechanism is installed in the accommodating space of the box body and is transmission-connected to the main power mechanism; the output end of the eccentric power mechanism is connected to the driving rod to promote the reciprocating motion of the driving rod.

[0021] Furthermore, the scraper assembly includes a scraper member, which includes a fixed portion, a first scraper portion and a second scraper portion connected in sequence; the fixed portion is used to connect to the output end of the transmission system; the inclination of the second scraper portion matches the inclination of the bottom surface of the sludge tank, so that the second scraper portion is placed in contact with the bottom surface of the sludge tank, and the second scraper portion is set at an obtuse angle to the first scraper portion.

[0022] Furthermore, a side of the second scraper portion away from the first scraper portion is an inclined surface.

[0023] Furthermore, the scraper assembly also includes a connecting member, one side of which is connected to the scraper member via a connecting shaft, and the other side of which is connected to the transmission system;

[0024] The fixed portion of the scraper member is provided with three flange structures arranged at intervals along its width direction, and the flange structure is provided with a first through hole;

[0025] The connecting member is provided with three groove structures matching the flange structure on one side close to the scraper member, and forming a limiting groove, and the limiting groove is provided with a second through hole opposite to the first through hole;

[0026] The flange structure of the scraper member is embedded and installed in the groove structure of the connecting member, and the connecting shaft is inserted and installed in the first through hole and the second through hole in sequence to achieve the connection between the scraper member and the connecting member.

[0027] Furthermore, two rectangular inner grooves are arranged at intervals on the other side of the connecting member; correspondingly, one end of the third connecting rod and the fourth connecting rod of the transmission system are hingedly installed in the rectangular inner grooves through pins.

[0028] Furthermore, the sealing system comprises:

[0029] A sealing sleeve, which is fixedly mounted on the side wall of the sludge tank and sleeved outside the driving rod;

[0030] A sealing member, wherein the sealing member is installed between the driving rod and the sealing sleeve, and a first end of the sealing member abuts against a side wall of the sludge tank;

[0031] A pressing block, wherein the pressing block is installed between the driving rod and the sealing sleeve, and one end of the pressing block abuts against the second end of the sealing member;

[0032] The sealing nut comprises a threaded connection portion and a locking portion perpendicular to the threaded connection portion; the threaded connection portion is sleeved on the outer wall surface of the sealing sleeve and is threadedly connected to the sealing sleeve; the locking portion stops at the other end of the pressure block.

[0033] Furthermore, the sealing system further comprises:

[0034] A fixing plate is sleeved on the outside of the driving rod and fixedly installed on the side wall of the sludge pool away from the sealing sleeve.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] The scraping device suitable for a closed sludge pool in the present invention has a power system arranged outside the sludge pool, generates power after startup, and transmits the power to the input end of the transmission system located in the sludge pool through the driving rod. The transmission system converts it into a power form suitable for the operation of the scraping system and outputs it from the output end. Then, the two ends of the scraper assembly of the scraping system are respectively slidably installed in the guide rails fixed on both sides of the sludge pool, and the power output by the transmission system drives the scraper assembly to reciprocate along the guide rails, thereby realizing the scraping operation of the sludge in the sludge pool. And the sealing system is arranged at the connection between the driving rod and the sludge pool to ensure that during the power transmission process, the sludge and other pollutants in the sludge pool will not leak out through the gap between the driving rod and the sludge pool, thereby ensuring the sealing of the closed sludge pool.

[0037] The scraper device of the present invention can more efficiently convert power into the movement required for the scraper operation through the coordinated work of an independent power system, a transmission system and a scraper system, making the scraper operation smoother and improving the sludge treatment efficiency. Moreover, each system has a clear division of labor, and the transmission system can effectively adjust the power according to the working requirements of the scraper system, reducing equipment failures caused by power transmission problems, extending the service life of the equipment, and ensuring the stable operation of the equipment.

[0038] At the same time, the power system is set outside the sludge tank, which is convenient for daily maintenance and overhaul of the power system, while avoiding the impact of the complex environment in the sludge tank on the power system, reducing maintenance costs and difficulty.

[0039] In addition, the addition of a sealing system in the scraper device effectively avoids the problem of sludge leakage, which not only ensures the treatment environment in the sludge pool, but also meets environmental protection requirements and prevents pollution to the surrounding environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 The structure of the sludge scraping device applicable to the closed sludge tank in the specific embodiment of the present invention is shown in FIG. Figure 1 ;

[0042] Figure 2 The structure of the sludge scraping device applicable to the closed sludge tank in the specific embodiment of the present invention is shown in FIG. Figure 2 ;

[0043] Figure 3 The structure of the sludge scraping device applicable to the closed sludge tank in the specific embodiment of the present invention is shown in FIG. Figure 3 ;

[0044] Figure 4 for Figure 3 Schematic diagram of the transmission system structure;

[0045] Figure 5 for Figure 1 Partial cross-sectional view of the sealing system;

[0046] Figure 6 for Figure 5 Schematic diagram of the structure of the middle fixed plate;

[0047] Figure 7 The schematic diagram of the power system structure in a specific embodiment of the present invention is as follows: Figure 1 ;

[0048] Figure 8 The schematic diagram of the power system structure in a specific embodiment of the present invention is as follows: Figure 2 ;

[0049] Fig. 9 for Figure 7 Schematic diagram of the structure of the central eccentric power mechanism;

[0050] Fig.10 for Figure 7 Schematic diagram of the middle drive rod structure;

[0051] Fig.11 It is a schematic diagram of the structure of the mud scraping system and the transmission system in a specific embodiment of the present invention;

[0052] Fig.12 for Fig.11 A top view of the middle scraper member;

[0053] Fig.13 for Fig.11 a side view of the middle scraper member;

[0054] Fig.14 for Fig.11 The structural diagram of the connecting parts;

[0055] Fig.15 for Fig.11 Schematic diagram of the structure of the middle connecting shaft;

[0056] Fig.16 It is a schematic diagram of the connection structure between the scraper assembly and the guide rail member in the sludge tank in a specific embodiment of the present invention;

[0057] Fig.17 for Fig. 9 A three-dimensional diagram of the structure of the central eccentric power mechanism;

[0058] Wherein: power system 1, box 12, accommodating space 120, main power mechanism 13, driving shaft 130, first driving gear 131, second driving gear 132, eccentric power mechanism 14, driven gear 140, connecting rod 141, driven shaft 142;

[0059] Transmission system 2, first connecting rod 20, second connecting rod 21, first X-shaped shear arm assembly 22, fixed hinge point 221, first input free end 222, first output free end 223, second X-shaped shear arm assembly 23, hinge point 231, second input free end 232, second output free end 233, third connecting rod 24, fourth connecting rod 25, base 26;

[0060] Mud scraping system 3, scraper assembly 30, scraper member 301, fixing portion 301-1, first scraper portion 301-2, second scraper portion 301-3, flange structure 301-4, guide rail member 31, connecting member 32, groove structure 321, limiting groove 322, rectangular inner groove 323, connecting shaft 33;

[0061] Sealing system 4, sealing sleeve 43, sealing member 44, first end 440, second end 441, pressing block 45, annular portion 450, raised portion 451, sealing nut 46, threaded connection portion 460, locking portion 461, fixing plate 47, plane 470, bolt 471, annular flange 472, chamfer 473;

[0062] Driving rod 5, connecting rod body 50, connecting head 51, boosting block 52;

[0063] Sludge tank 6. DETAILED DESCRIPTION

[0064] The following will be combined with the accompanying drawings in 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 belong to the protection scope of the present invention.

[0065] The following is combined with Figure 1 To Attachment Fig.16 And specific embodiments, the present invention is described in detail:

[0066] like Figure 1-16 As shown, a sludge scraping device suitable for a closed sludge tank in the present invention is installed in the sludge tank 6. In this embodiment, the sludge tank 6 is a double-layer sealed cabin, which can better block the leakage path of radioactive substances and prevent environmental pollution. The sludge scraping device includes:

[0067] A power system 1, wherein the power system 1 is arranged outside the sludge tank 6;

[0068] A transmission system 2, wherein the transmission system 2 is disposed in the sludge tank 6, and the transmission system 2 has an input end and an output end, and the input end of the transmission system 2 is connected to the power system 1 through a driving rod 5;

[0069] The sludge scraping system 3 includes a scraper assembly 30 and guide rails 31 fixedly mounted on both sides of the sludge tank 6. The two ends of the scraper assembly 30 are slidably mounted in the guide rails 31, and the scraper assembly 30 is connected to the output end of the transmission system 2. In this embodiment, the guide rails 31 are in the shape of long strips and can be fixed in the sludge tank 6 by welding or bolts, and grooves arranged along the length direction of the two guide rails 31 are provided on the two opposite inner sides.

[0070] The sealing system 4 is arranged at the connection between the driving rod 5 and the sludge pool 6 .

[0071] The scraping device suitable for a closed sludge pool in the present invention has a power system 1 arranged outside the sludge pool 6, and generates power after starting, and transmits the power to the input end of the transmission system 2 located in the sludge pool 6 through the driving rod 5. The transmission system 2 converts it into a power form suitable for the operation of the scraping system 3 and outputs it from the output end. Then, the two ends of the scraper assembly 30 of the scraping system 3 are respectively slidably installed in the guide rails 31 fixed on both sides of the sludge pool 6, and the power output by the transmission system 2 drives the scraper assembly 30 to reciprocate along the guide rails 31, thereby realizing the scraping operation of the sludge in the sludge pool. And the sealing system 4 is arranged at the connection between the driving rod 5 and the sludge pool 6, ensuring that during the power transmission process, the sludge and other pollutants in the sludge pool will not leak out through the gap between the driving rod 5 and the sludge pool 6, thereby ensuring the sealing of the closed sludge pool.

[0072] The scraper device of the present invention can more efficiently convert power into the movement required for the scraper operation through the independent power system 1, transmission system 2 and scraper system 3 working together, making the scraper operation smoother and improving the sludge treatment efficiency. In addition, each system has a clear division of labor, and the transmission system 2 can effectively adjust the power according to the working requirements of the scraper system 3, reducing equipment failures caused by power transmission problems, extending the service life of the equipment, and ensuring the stable operation of the equipment.

[0073] At the same time, the power system 1 is arranged outside the sludge tank 6, which is convenient for daily maintenance and overhaul of the power system 1, while avoiding the influence of the complex environment in the sludge tank 6 on the power system 1, reducing the maintenance cost and difficulty.

[0074] In addition, the sealing system 4 is added to the scraper device to effectively avoid the problem of sludge leakage, which not only ensures the treatment environment in the sludge tank, but also meets environmental protection requirements and prevents pollution to the surrounding environment.

[0075] Furthermore, in some specific embodiments, a detailed design of the transmission system 2 is provided, and the specific design scheme is as follows:

[0076] The transmission system 2 includes a first connecting rod 20 , a second connecting rod 21 , a first X-shaped shear arm assembly 22 , a second X-shaped shear arm assembly 23 , a third connecting rod 24 , a fourth connecting rod 25 and a base 26 .

[0077] Among them, Figure 4 As shown, the first X-shaped shear arm assembly 22 has a fixed hinge point 221, two first input free ends 222, and two first output free ends 223. The second X-shaped shear arm assembly 23 has a hinge point 231, two second input free ends 232, and two second output free ends 233.

[0078] One end of the first connecting rod 20 and the second connecting rod 21 are hinged to the driving rod 5, and the other ends are respectively hinged to the two first input free ends 222 of the first X-type shear arm assembly 22; the fixed hinge point 221 of the first X-type shear arm assembly 22 is fixed in the sludge pool 6, the two first output free ends 223 of the first X-type shear arm assembly 22 are respectively hinged to the two second input free ends 232 of the second X-type shear arm assembly 23, and the two second output free ends 233 of the second X-type shear arm assembly 23 are respectively hinged to one end of the third connecting rod 24 and the fourth connecting rod 25; the other ends of the third connecting rod 24 and the fourth connecting rod 25 are both hinged to the scraper assembly 30.

[0079] During operation, since one end of the first connecting rod 20 and the second connecting rod 21 are hinged to the driving rod 5, the movement of the driving rod 5 drives the two connecting rods to move synchronously, and the power is transmitted from the driving rod 5 to the first X-shaped shear arm assembly 22. The first X-shaped shear arm assembly 22 uses the fixed hinge point 221 fixed in the sludge tank 6 as a fulcrum. When the first connecting rod 20 and the second connecting rod 21 drive the two first input free ends 222 to move, this movement is converted into the movement of the two first output free ends 223 according to the lever principle and the characteristics of the hinge structure, and the direction and amplitude of the movement change accordingly.

[0080] Next, the two first output free ends 223 of the first X-shaped shear arm assembly 22 are hinged with the two second input free ends 232 of the second X-shaped shear arm assembly 23, thereby transmitting power to the second X-shaped shear arm assembly 23, causing it to start moving with the hinge point 231 as the center. The second X-shaped shear arm assembly 23 transmits the power from the first X-shaped shear arm assembly 22 from the two second input free ends 232 and converts it into the movement of the two second output free ends 233. Finally, the two second output free ends 233 of the second X-shaped shear arm assembly 23 are hinged with the scraper assembly 30 through the third connecting rod 24 and the fourth connecting rod 25, respectively, driving the scraper assembly 30 to reciprocate along the guide rail 31 to achieve the actual operation of scraping mud.

[0081] The transmission system 2, through a clever combination of connecting rods and X-shaped shear arm assemblies, can accurately and flexibly convert the linear reciprocating motion of the drive rod 5 into the motion form required by the scraper assembly 30, and is highly adaptable to the complex working conditions of the sludge scraping operation in the sludge tank 6, greatly improving the sludge scraping efficiency and effect.

[0082] At the same time, the multi-link and double X-shaped shear arm assemblies work together to evenly distribute power during transmission, avoiding stress concentration, effectively reducing the risk of component damage due to excessive local force, enhancing the stability and reliability of the transmission system, and extending the overall service life of the equipment.

[0083] In addition, the entire transmission system 2 has a compact structure and can efficiently complete power transmission and motion conversion in the limited internal space of the sludge tank 6, thereby reducing space occupancy and improving equipment integration.

[0084] More specifically, in this embodiment, the fixed hinge point 221 of the first X-type shear arm assembly 22 is arranged at a position close to the first input free end 222. From the perspective of the lever principle, the fixed hinge point 221 is close to the first input free end 222, so that the input lever arm of the first X-type shear arm assembly 22 is relatively short and the output lever arm is relatively long during the force transmission process, which can achieve a force amplification effect to a certain extent. When the power system transmits force to the first X-type shear arm assembly 22 through the driving rod 5 and the first connecting rod 20 and the second connecting rod 21, a larger output force can be obtained at the first output free end 223 with a smaller input force, which is conducive to driving the scraper assembly 30 to perform mud scraping operations, especially when processing high-viscosity and high-resistance sludge, it can more effectively overcome the resistance and ensure the mud scraping effect.

[0085] It should be noted that the hinge points of the X-shaped shear arm assembly and the connecting rod can be hingedly connected by bolts. Specifically, the bolts are welded to the upper member at the hinge point, and the upper member and the lower member are connected by bolts to achieve the hinged connection of the X-shaped shear arm assembly and the connecting rod, which can rotate around the bolts.

[0086] Furthermore, in some specific embodiments, Figure 7-10 As shown, the power system 1 includes:

[0087] A power member, the power member is used to provide power; in this embodiment, the power member is a motor;

[0088] The box body 12 has a receiving space 120;

[0089] A main power mechanism 13, which is installed in the accommodating space 120 of the box 12 and is transmission-connected to the power member;

[0090] The eccentric power mechanism 14 is installed in the accommodating space 120 of the box body 12 and is transmission-connected to the main power mechanism 13 ; the output end of the eccentric power mechanism 14 is connected to the driving rod 5 to promote the reciprocating motion of the driving rod 5 .

[0091] When the power system 1 of the present invention is working, the power part is started, and the output power is transmitted to the main power mechanism 13, and then the main power mechanism 13 transmits the power to the eccentric power mechanism 14. The eccentric power mechanism 14 uses the eccentric structure principle to convert the rotary motion into a linear reciprocating motion, and its output end is connected to the driving rod 5, thereby driving the driving rod 5 to do reciprocating motion. The driving rod 5 can be further connected to the scraping system or other operating parts in the closed sludge tank to achieve operations such as scraping sludge, meeting the sludge treatment process requirements.

[0092] The continuous transmission chain of the power parts in the power system 1 through the main power mechanism 13 and then to the eccentric power mechanism 14 not only ensures the continuous and stable supply of power, avoids jams and interruptions in the power transmission process, and ensures the continuity of sludge treatment operations, but also converts rotational motion into linear reciprocating motion through the eccentric structure, adapting to the movement requirements of operating parts such as the scraping system.

[0093] Specifically, the main power mechanism 13 includes a driving shaft 130 and a first driving gear 131 installed on the driving shaft 130. The two ends of the driving shaft 130 are respectively installed on the side walls of the box body 12. Bearings are provided at the connection between the driving shaft 130 and the box body 12. The two ends of the driving shaft 130 are supported by the bearings to realize the rotational connection between the driving shaft 130 and the box body 12.

[0094] More specifically, a second driving gear 132 may be further provided at the input end of the driving shaft 130 for transmission connection with the power member. In this embodiment, the second driving gear 132 is transmission connected with the power member via a speed reducer.

[0095] Specifically, the eccentric power mechanism 14 includes two driven gears 140 arranged in parallel, a connecting rod 141 whose two ends are respectively connected to the two driven gears 140, and two driven shafts 142 fixedly installed on the driven gears 140 on one side close to the side wall of the box body 12. A bearing is provided at the connection between the driven shaft 142 and the box body 12, and the end of the driven shaft 142 is supported by the bearing to realize the rotational connection between the driven shaft 142 and the box body 12.

[0096] The two driven gears 140 are meshed with the first driving gear 131 to achieve power transmission. The connecting rod 141 is set away from the center of the driven gear 140, and the connecting rod 141 is connected to the driving rod 5. In this embodiment, the two driven gears 140 are symmetrically arranged, and the connecting rod 141 is horizontally arranged and located near the outer edge of the driven gear 140 to avoid torque imbalance. At the same time, the eccentricity can be maximized to achieve effective conversion from rotational motion to linear reciprocating motion, ensuring that the displacement change amplitude of the connecting rod 141 in the horizontal direction is the largest.

[0097] The two parallel driven gears 140 are connected by a connecting rod 141 to form a relatively stable mechanical structure. When the driven gear 140 receives power from the main power mechanism 13 and rotates, the gears on both sides work together and check and balance each other, making the power output of the entire eccentric power mechanism 14 more stable, avoiding vibrations and jams caused by uneven force on one side, providing a stable reciprocating driving force for the driving rod 5, and ensuring the smooth advancement of the sludge treatment operation.

[0098] At the same time, the connecting rod 141 is set away from the center of the driven gear 140, and the eccentric principle is utilized to convert the rotational motion of the driven gear 140 into linear reciprocating motion, and directly transmit it to the driving rod 5. It has a simple structure and reduces the energy loss in the intermediate links compared to the complex multi-stage transmission conversion method, improves the mechanical efficiency, and can drive the scraping system or other operating parts with a stronger and more stable linear reciprocating power, thereby meeting the requirements of sludge treatment for motion form and power intensity.

[0099] Specifically, the driving rod 5 is also designed in detail, such as Fig.10 As shown, the specific design scheme is as follows: the driving rod 5 includes a connecting rod body 50, a connecting head 51 arranged at one end of the connecting rod body 50, and a booster block 52 arranged at the other end of the connecting rod body 50. The connecting head 51 is used to connect with the scraping system to realize the scraping operation. The booster block 52 is in the shape of a long strip, and a rectangular through hole is opened in the middle. Correspondingly, the connecting rod 141 in the eccentric power mechanism 14 is placed in the through hole in the middle of the booster block 52. The long strip booster block 52 can play a reciprocating role to a certain extent, similar to the principle of a lever. When the connecting rod 141 pushes the booster block 52, due to the shape characteristics of the booster block 52, the force from the connecting rod 141 can be more effectively converted into power to push the scraping system, thereby enhancing the scraping effect.

[0100] More specifically, the connecting rod body 50 and the booster block 52 are connected via threads, which facilitates disassembly and installation.

[0101] Further, in some specific embodiments, the scraper assembly 30 includes a scraper member 301, such as Fig.13As shown, the scraper member 301 includes a fixed portion 301-1, a first scraper portion 301-2 and a second scraper portion 301-3 connected in sequence; the fixed portion 301-1 is used to connect to the output end of the transmission system 2; the slope of the second scraper portion 301-3 matches the slope of the bottom surface of the sludge pool 6, so that the second scraper portion 301-3 is placed on the bottom surface of the sludge pool 6, and the second scraper portion 301-3 and the first scraper portion 301-2 are arranged at an obtuse angle. The slope of the second scraper portion 301-3 matches the slope of the bottom surface of the sludge pool 6, which can make it fit tightly with the bottom of the pool. When the scraper assembly 30 is in operation, the sludge in each corner of the bottom of the pool can be effectively cleaned, and the situation of residual sludge due to loose fitting can be avoided, so as to achieve comprehensive and efficient sludge scraping operations and improve the thoroughness of sludge cleaning. Since the second scraper part 301-3 contacts the sludge first, it can initially cut into and stir the sludge to loosen thick or hard sludge. The first scraper part 301-2 and the second scraper part 301-3 are arranged at an obtuse angle, so that after the second scraper part 301-3 loosens the sludge, the sludge can be smoothly pushed to the first scraper part 301-2, which is conducive to pushing the sludge forward.

[0102] When moving forward, the downward force exerted by the sludge on the scraper 301 causes the scraper 301 to fit the bottom surface of the sludge tank, ensuring that the scraper 301 is in full contact with the bottom surface, maximizing the sludge scraping, reducing the residue, and improving the thoroughness of the sludge scraping. When the scraper 301 moves backward, the upward force exerted by the residual sludge on the scraper 301 causes the scraper 301 to separate from the bottom surface of the sludge tank 6, effectively reducing the sludge carried by the scraper 301 during the return journey, avoiding bringing the scraped sludge back into the sludge tank 6, reducing the workload of repeated scraping, and improving the overall efficiency of the scraping operation.

[0103] More specifically, a side of the second scraper portion 301 - 3 away from the first scraper portion 301 - 2 is an inclined surface, which is beneficial to the mud scraping operation.

[0104] Further, in some specific embodiments, the scraper assembly 30 also includes a connecting member 32, the two ends of which are inserted into the grooves of the guide rail member 31. Through the cooperation between the two ends of the connecting member 32 and the guide rail member 31, the scraper device can travel along a fixed route when it moves forward or backward to prevent deviation from the direction. One side of the connecting member 32 is connected to the scraper member 301 through a connecting shaft 33, and the other side is connected to the transmission system 2. In this embodiment, the other side of the connecting member 32 is provided with two rectangular inner grooves 323 arranged at intervals; correspondingly, one end of the third connecting rod 24 and the fourth connecting rod 25 is hingedly installed at the rectangular inner groove 323 through a pin; when the scraper assembly 30 moves forward or backward, the third connecting rod 24 and the fourth connecting rod 25 rotate around the pin shaft and push the scraper system 3 forward or backward; when recovering, the third connecting rod 24 and the fourth connecting rod 25 rotate around the pin shaft and can be embedded in the rectangular inner groove 323 to save operating space.

[0105] The fixing portion 301 - 1 of the scraper member 301 is provided with three flange structures 301 - 4 arranged at intervals along its width direction, and the flange structure 301 - 4 is provided with a first through hole.

[0106] The connecting member 32 is provided with three groove structures 321 matching the flange structure 301 - 4 on one side thereof close to the scraper member 301 , and correspondingly forms a limiting groove 322 , and the limiting groove 322 is provided with a second through hole opposite to the first through hole.

[0107] The flange structure 301 - 4 of the scraper member 301 is embedded in the groove structure 321 of the connecting member 32 , and the connecting shaft 32 is inserted into the first through hole and the second through hole in sequence to achieve the connection between the scraper member 301 and the connecting member 32 .

[0108] The fixed portion 301-1 of the scraper member 301 is provided with three spaced flange structures 301-4 along the width direction, and is embedded in the corresponding groove structure 321 of the connecting member 32, so as to realize multiple positioning. Through the cooperation of multiple flange structures and groove structures, the accuracy of the relative position between the scraper member 301 and the connecting member 32 during the mud scraping process is ensured, and the stability of the overall structure of the scraper assembly 30 is enhanced.

[0109] At the same time, the design of the flange structure 301-4 and the groove structure 321 makes the installation and disassembly between the scraper member 301 and the connecting member 32 more convenient. When the scraper member 301 needs to be replaced or maintained, the connecting shaft 33 is taken out to separate the scraper member 301 from the connecting member 32, which is easy to operate.

[0110] In addition, the arrangement of multiple flange structures 301-4 disperses the connection force between the scraper member 301 and the connection member 32 to different positions, avoiding excessive local force caused by the connection point being concentrated in one place. This helps to evenly distribute the force generated during the scraping process over the entire connection structure, reduce stress concentration of the connection components, improve the bearing capacity of the structure, extend the service life of the connection components, and ensure the reliability of the scraper device during long-term use.

[0111] Furthermore, in some specific embodiments, Figure 5 , 6 As shown, the sealing system 4 is installed at the connection between the driving rod 5 and the sludge tank 6, and includes a sealing sleeve 43, a sealing member 44, a pressing block 45 and a sealing nut 46.

[0112] The sealing sleeve 43 is fixedly installed on the side wall of the sludge tank 6 and sleeved on the outside of the driving rod 5; the outer wall surface of the sealing sleeve 43 is provided with an external thread; it should be noted that the fixing installation form of the sealing sleeve 43 is not specifically limited, such as welding, bolt fixing connection, etc. In this embodiment, the sealing sleeve 43 is welded and fixed on the side wall of the sludge tank 6, and the welding fixation has good stability.

[0113] The seal 44 is installed between the driving rod 5 and the sealing sleeve 43, and the first end 440 of the seal 44 stops against the side wall of the sludge pool 6. In this embodiment, the seal 44 is made of rubber. The seal 44 made of rubber can be compressed between the driving rod 5 and the sealing sleeve 43 to fill the small gap between the two. Due to the elasticity of rubber, it can adapt to different assembly tolerances and deformation under working conditions, effectively prevent sludge, sewage and other media from leaking from between the driving rod 5 and the sealing sleeve 43, and ensure the sealing effect. At the same time, in the environment of the sludge pool 6, there are various chemical substances and microorganisms. The rubber material has a certain corrosion resistance and can resist the erosion of acidic and alkaline substances and microorganisms in the sludge, extend the service life of the seal 44, and reduce the maintenance cost and workload caused by frequent replacement of seals.

[0114] The pressing block 45 is installed between the driving rod 5 and the sealing sleeve 43 , and one end of the pressing block 45 abuts against the second end 441 of the sealing member 44 to achieve compression of the sealing member 44 .

[0115] The sealing nut 46 includes a threaded connection portion 460 and a locking portion 461 perpendicular to the threaded connection portion 460 ; the threaded connection portion 460 is provided with an internal thread, sleeved on the outer wall of the sealing sleeve 43 , and threadedly connected to the sealing sleeve 43 ; the locking portion 461 stops at the other end of the pressing block 45 .

[0116] In the present invention, the sealing system 4 adopts the threaded connection part 460 of the sealing nut 46 to be threadedly connected with the outer wall surface of the sealing sleeve 43, and the position of the sealing nut 46 on the sealing sleeve 43 can be adjusted by rotating the sealing nut 46. When the sealing nut 46 is tightened, its locking part 461 will apply pressure to the pressing block 45, so that the pressing block 45 further presses the sealing member 44, which can effectively ensure that the sealing member 44 is always in a compressed state, thereby better filling the gap between the driving rod 5 and the sealing sleeve 43, enhancing the sealing effect, and preventing the medium in the sludge tank from leaking. It can also avoid leakage into the sealing sleeve 3, avoid damage to the sealing member 44 in the sealing sleeve 3, and extend the service life of the sealing system 4.

[0117] At the same time, the locking portion 461 of the sealing nut 46 stops at the other end of the pressure block 45, and together with the sealing sleeve 43, the pressure block 45 and the seal 44, forms a stable sealing structure, which can resist the influence of factors such as pressure changes inside the sludge tank 6 and vibration during equipment operation on the sealing effect, ensuring that the sealing system 4 can work stably for a long time in a complex working environment.

[0118] In addition, the threaded connection makes it very convenient to install and adjust the sealing nut 46. During installation, the position of the sealing nut 46 can be accurately adjusted according to actual needs to achieve a suitable sealing pressure.

[0119] Furthermore, in some specific embodiments, Figure 5-6 As shown, the sealing system 4 further includes a fixing plate 47 .

[0120] The fixing plate 47 is sleeved on the outside of the driving rod 5 and fixedly installed on the side wall of the sludge pool 6 away from the sealing sleeve 43. At the same time, the side of the fixing plate 47 close to the side wall of the sludge pool 6 is a plane 470, and the plane 470 of the fixing plate 47 is fitted on the side wall of the sludge pool 6, effectively preventing the sludge from leaking from the connection between the driving rod 5 and the side wall of the sludge pool 6, further improving the sealing integrity of the entire sealing system 4, and minimizing the risk of leakage.

[0121] In this embodiment, the fixing plate 47 is made of hard plastic or metal. There are many ways to fix the fixing plate 47, such as welding, snap connection, bolt connection, etc. As in this embodiment, the fixing plate 47 is fixedly installed on the side wall of the sludge tank 6 by three bolts 471 evenly distributed along its circumferential direction. The bolt connection method makes the installation process of the fixing plate 47 relatively simple and convenient for installation and disassembly. At the same time, the three bolts 471 evenly distributed along the circumferential direction can make the fixing of the fixing plate 47 on the side wall of the sludge tank 6 more uniform and stable, which can effectively prevent the fixing plate 47 from being deformed or loosened due to local uneven force, so as to better fit the side wall of the sludge tank 6 and ensure the sealing effect.

[0122] Specifically, Figure 6 As shown, an annular flange 472 may be formed on the side of the fixing plate 47 away from the side wall of the sludge pool 6 , and at the same time, an oblique chamfer 473 is provided on the outer edge of the annular flange 472 away from the driving rod 5 .

[0123] The annular flange 472 can increase the overall structural strength of the fixing plate 47, so that when the fixing plate 47 is subjected to the pressure from the inside of the sludge tank 6 or the external impact force, it can play a reinforcing role like a reinforcing rib to prevent the fixing plate 47 from being deformed, thereby better maintaining the stability of the sealing system 4. At the same time, when a small amount of leakage occurs or the sludge contacts the fixing plate 47, the annular flange 472 can play a certain guiding role for the sludge, etc., reducing the risk of corrosion or damage to the driving rod 5 and the sealing system 4.

[0124] In addition, the chamfer 473 can prevent the outer edge of the annular flange 472 from being too sharp, thereby preventing the operator from being scratched or damaged when colliding with the annular flange 472 during equipment installation, maintenance or daily operation.

[0125] Furthermore, in some specific embodiments, the design of the pressing block 45 is refined, and the specific technical solutions are as follows:

[0126] The pressing block 45 includes a circular portion 450 and a protrusion 451 arranged at one end of the circular portion 450 away from the side wall of the sludge pool 6. The circular portion 450 is arranged between the driving rod 5 and the sealing sleeve 43, and the end of the circular portion 450 away from the protrusion 451 stops at the second end 441 of the sealing member 44.

[0127] The outer wall surface of the protrusion 451 close to the annular portion 450 abuts against an end of the sealing sleeve 43 away from the side wall of the sludge tank 6 .

[0128] When the sealing nut 46 is tightened, the locking portion 461 thereof will exert pressure on the raised portion 451 in the pressing block 45, so that the annular portion 450 in the pressing block 45 will further compress the sealing member 44, thereby effectively ensuring that the sealing member 44 is always in a compressed state, thereby better filling the gap between the driving rod 5 and the sealing sleeve 43, enhancing the sealing effect, and preventing leakage of the medium in the sludge tank.

[0129] At the same time, due to the setting of the protrusion 451, when the locking portion 461 of the sealing nut 46 applies pressure to the protrusion 451, the protrusion 451 can serve as a good pressure transmission structure, so that the pressure can be transmitted from the protrusion 451 to the annular portion 450 in a more direct and concentrated manner, thereby ensuring that the annular portion 450 can apply sufficient and effective pressure to the seal 44, so that the seal 44 can better play a sealing role. In addition, the outer wall surface of the protrusion 451 close to the annular portion 450 stops at the end of the sealing sleeve 43 away from the side wall of the sludge tank 6, so that the stop effect of the protrusion 451 and the sealing sleeve 43 can prevent the pressure block 45 from being displaced or tilted, thereby maintaining the stability of the entire sealing structure.

[0130] It should be noted that the specific materials of the parts in the scraper device are not limited in the present invention, and can be selected by those skilled in the art according to actual conditions. For example, in this embodiment, the scraper device is mainly used in the field of radioactive waste liquid treatment, so correspondingly, the key parts inside the sludge pool 6 need to be provided with special coatings, such as boron polyethylene composite materials to wrap the key parts. In addition, a radiation-resistant ceramic coating can be coated on the surface of the scraper member 301 to prevent secondary contamination caused by the adhesion of radioactive sludge.

[0131] The present invention is further described above with the aid of specific embodiments. However, it should be understood that the specific description here should not be construed as limiting the essence and scope of the present invention. Various modifications made to the above embodiments by ordinary technicians in the field after reading this specification are all within the scope of protection of the present invention.

Claims

1. A sludge scraping device suitable for a closed sludge tank, installed in the sludge tank, characterized in that: The scraper device comprises: A power system, wherein the power system is arranged outside the sludge tank; A transmission system, wherein the transmission system is arranged in the sludge tank, the transmission system has an input end and an output end, and the input end of the transmission system is connected to the power system through a driving rod; A sludge scraping system, the sludge scraping system comprising a scraper assembly and guide rails fixedly mounted on both sides of the sludge tank, the two ends of the scraper assembly are respectively slidably mounted in the guide rails, and the scraper assembly is connected to the output end of the transmission system; A sealing system is provided at the connection between the driving rod and the sludge pool.

2. The sludge scraping device for a closed sludge tank according to claim 1, characterized in that: The transmission system comprises a first connecting rod, a second connecting rod, a first X-shaped shear arm assembly, a second X-shaped shear arm assembly, a third connecting rod, a fourth connecting rod and a base; Wherein, the first X-shaped shear arm assembly has a fixed hinge point, two first input free ends, and two first output free ends; the second X-shaped shear arm assembly has a hinge point, two second input free ends, and two second output free ends; One end of the first connecting rod and the second connecting rod are hinged to the driving rod, and the other ends are respectively hinged to the two first input free ends of the first X-type shear arm assembly; the fixed hinge point of the first X-type shear arm assembly is fixed in the sludge tank, the two first output free ends of the first X-type shear arm assembly are respectively hinged to the two second input free ends of the second X-type shear arm assembly, and the two second output free ends of the second X-type shear arm assembly are respectively hinged to one end of the third connecting rod and the fourth connecting rod; the other ends of the third connecting rod and the fourth connecting rod are both hinged to the scraper assembly.

3. The sludge scraping device for a closed sludge tank according to claim 2, characterized in that: The fixed hinge point of the first X-shaped shear arm assembly is arranged at a position close to the first input free end.

4. The sludge scraping device for a closed sludge tank according to claim 1, characterized in that: The power system comprises: A power member, the power member is used to provide power; A box body, wherein the box body has a containing space; A main power mechanism, which is installed in the accommodating space of the box body and is transmission-connected to the power member; An eccentric power mechanism is installed in the accommodating space of the box body and is transmission-connected to the main power mechanism; the output end of the eccentric power mechanism is connected to the driving rod to promote the reciprocating motion of the driving rod.

5. The sludge scraping device for a closed sludge tank according to claim 1, characterized in that: The scraper assembly includes a scraper member, which includes a fixed portion, a first scraper portion and a second scraper portion connected in sequence; the fixed portion is used to connect to the output end of the transmission system; the inclination of the second scraper portion matches the inclination of the bottom surface of the sludge tank, so that the second scraper portion is placed in contact with the bottom surface of the sludge tank, and the second scraper portion is set at an obtuse angle to the first scraper portion.

6. The sludge scraping device for a closed sludge tank according to claim 5, characterized in that: A side of the second scraper portion away from the first scraper portion is an inclined surface.

7. The sludge scraping device for a closed sludge tank according to claim 5, characterized in that: The scraper assembly also includes a connecting member, one side of which is connected to the scraper member via a connecting shaft, and the other side of which is connected to the transmission system; The fixed portion of the scraper member is provided with three flange structures arranged at intervals along its width direction, and the flange structure is provided with a first through hole; The connecting member is provided with three groove structures matching the flange structure on one side close to the scraper member, and forming a limiting groove, and the limiting groove is provided with a second through hole opposite to the first through hole; The flange structure of the scraper member is embedded in the groove structure of the connecting member, and the connecting shaft is inserted into the first through hole and the second through hole in sequence to achieve the connection between the scraper member and the connecting member.

8. The sludge scraping device for a closed sludge tank according to claim 7, characterized in that: The other side of the connecting piece is provided with two rectangular inner grooves arranged at intervals; correspondingly, one end of the third connecting rod and the fourth connecting rod of the transmission system is hingedly installed in the rectangular inner grooves through pins.

9. The sludge scraping device for a closed sludge tank according to claim 1, characterized in that: The sealing system comprises: A sealing sleeve, which is fixedly mounted on the side wall of the sludge tank and sleeved outside the driving rod; A sealing member, wherein the sealing member is installed between the driving rod and the sealing sleeve, and a first end of the sealing member abuts against a side wall of the sludge tank; A pressing block, wherein the pressing block is installed between the driving rod and the sealing sleeve, and one end of the pressing block abuts against the second end of the sealing member; The sealing nut comprises a threaded connection portion and a locking portion perpendicular to the threaded connection portion; the threaded connection portion is sleeved on the outer wall surface of the sealing sleeve and is threadedly connected to the sealing sleeve; the locking portion stops at the other end of the pressure block.

10. The sludge scraping device for a closed sludge tank according to claim 9, characterized in that: The sealing system further comprises: A fixing plate is sleeved on the outside of the driving rod and fixedly installed on the side wall of the sludge pool away from the sealing sleeve.

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