A sludge scraping device for a closed sludge lagoon

Abstract

The application belongs to the technical field of sludge scraping devices, and particularly relates to a sludge scraping device suitable for a closed sludge pool. The sludge scraping device is installed in the sludge pool and comprises a power system, a transmission system and a sealing system. The power system is arranged outside the sludge pool. The transmission system is arranged in the sludge pool and has an input end and an output end. 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 members fixedly installed on both sides of the sludge pool. The two ends of the scraper assembly are slidably installed in the guide rail members, and the scraper assembly is connected with the output end of the transmission system. The sealing system is arranged at the connection between the driving rod and the sludge pool. The sludge scraping device can more efficiently convert power into the movement required for sludge scraping operation through the cooperation of the independent power system, transmission system and sludge scraping system, so that the sludge scraping operation is more smooth, and the sludge treatment efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sludge scraping devices, in particular to a sludge scraping device suitable for a closed sludge pool. BACKGROUND

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

[0003] As an important part of the sludge pool, the sludge scraping device is used to scrape the sludge (precipitates) sent from the upper process by mechanical force from the flow guide area and transport it to the sludge hopper or sludge collection pit to reduce the deposition of sludge (precipitates) in the flow guide area. Generally, the sludge scraping device is divided into power part and execution part. A part of the power part is arranged outside the sludge pool, and the execution part performs the sludge scraping operation in the sludge pool. However, the traditional sludge scraping device is directly connected with the execution part by driving rod, and the sealing of this connection cannot be guaranteed, which is not suitable for the closed sludge pool containing radioactive waste. Since radioactive waste has potential hazards, the precipitates produced in the treatment of radioactive waste liquid often have certain radioactivity. During the treatment process, the connection between the driving rod of the sludge scraping device and the sludge pool is a weak link, and a gap is easily formed. Once a gap is formed, radioactive sludge may leak through the gap, thereby polluting the surrounding operating environment, which undoubtedly poses 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 arranged inside the sludge pool, which is easily corroded by sludge, shortens the service life of the component, often causes transmission failure, reduces the treatment efficiency, and increases the cost. In addition, the power part is directly connected to the execution part, i.e. the scraper part, which has poor stability.

[0005] Therefore, the present application provides a new sludge scraping device suitable for a closed sludge pool to overcome the above-mentioned defects. SUMMARY

[0006] The present application aims to provide a sludge scraping device suitable for a closed sludge pool. The sludge scraping device cooperates with an independent power system, transmission system and sludge scraping system to convert power into the movement required for sludge scraping operation more efficiently, making the sludge scraping operation smoother and improving the sludge treatment efficiency. In addition, the sludge scraping device increases the sealing system, which effectively avoids the problem of sludge leakage, not only ensures the treatment environment in the sludge pool, but also meets the environmental protection requirements and prevents pollution to the surrounding environment.

[0007] The application adopts the following technical scheme: a sludge scraping device suitable for a closed sludge tank, which is installed in the sludge tank, and comprises:

[0008] a power system arranged outside the sludge tank;

[0009] a transmission system arranged in the sludge tank, the transmission system having an input end and an output end, the input end of the transmission system being connected with the power system through a driving rod;

[0010] a sludge scraping system comprising a scraper assembly and guide rail members fixedly installed on both sides of the sludge tank, both ends of the scraper assembly being slidingly installed in the guide rail members, and the scraper assembly being connected with the output end of the transmission system;

[0011] a sealing system arranged at the connection between the driving rod and the sludge tank.

[0012] Further, 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;

[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 each of the first connecting rod and the second connecting rod is hingedly connected with the driving rod, and the other end is hingedly connected with the two first input free ends of the first X-shaped shear arm assembly; the fixed hinge point of the first X-shaped shear arm assembly is fixed in the sludge tank, the two first output free ends of the first X-shaped shear arm assembly are hingedly connected with the two second input free ends of the second X-shaped shear arm assembly, and the two second output free ends of the second X-shaped shear arm assembly are hingedly connected with one end of each of the third connecting rod and the fourth connecting rod; the other end of each of the third connecting rod and the fourth connecting rod is hingedly connected with the scraper assembly.

[0015] Further, 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] Further, the power system comprises:

[0017] a power member for providing power;

[0018] a box having a containing space in the box;

[0019] A main power mechanism is installed in the accommodating space of the box body and is in transmission connection with the power member;

[0020] An eccentric power mechanism is installed in the accommodating space of the box body and is in transmission connection with the main power mechanism; an output end of the eccentric power mechanism is connected with the driving rod to push the reciprocating movement of the driving rod.

[0021] Further, the scraper assembly comprises a scraper member, which comprises a fixed part, a first scraper part and a second scraper part connected in sequence; the fixed part is used for being connected with the output end of the transmission system; the slope of the second scraper part matches the slope of the bottom surface of the sludge pool, so that the second scraper part is placed on the bottom surface of the sludge pool, and the second scraper part and the first scraper part are arranged at an obtuse angle.

[0022] Further, the side of the second scraper part away from the first scraper part is a slope.

[0023] Further, the scraper assembly further comprises a connecting member, one side of the connecting member is connected with the scraper member through a connecting shaft, and the other side is connected with the transmission system;

[0024] The fixed part of the scraper member is provided with three flange structures arranged at intervals along the width direction of the fixed part, and the flange structures are provided with first through holes;

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

[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 sequentially inserted and installed into the first through hole and the second through hole, so as to realize the connection between the scraper member and the connecting member.

[0027] Further, the other side of the connecting member 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 at the rectangular inner groove through a pin.

[0028] Further, the sealing system comprises:

[0029] A sealing sleeve is fixedly installed at the side wall of the sludge pool and is sleeved on the driving rod;

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

[0031] A 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] A sealing nut comprises a threaded connection part and a locking part perpendicular to the threaded connection part; the threaded connection part is sleeved on the outer wall surface of the sealing sleeve and is threadedly connected with the sealing sleeve; and the locking part abuts against the other end of the pressing block.

[0033] Further, the sealing system further comprises:

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

[0035] Compared with the prior art, the beneficial effects of the present application are:

[0036] In the present application, the power system is arranged outside the sludge pool, and generates power after being started, which is transmitted 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 sludge scraping system, and outputs it from the output end. Then, the two ends of the scraper assembly of the sludge scraping system are respectively slidably installed in the guide rail members fixed on both sides of the sludge pool, and the power output by the transmission system drives the scraper assembly to make reciprocating motion along the guide rail members, thereby realizing the scraping operation of the sludge in the sludge pool. The sealing system is arranged at the connection between the driving rod and the sludge pool, so that the sludge and other pollutants in the sludge pool cannot leak out through the gap between the driving rod and the sludge pool during power transmission, and the sealing property of the closed sludge pool is ensured.

[0037] In the present application, the sludge scraping device cooperates with the independent power system, transmission system and sludge scraping system to work, can more efficiently convert power into the movement required for the sludge scraping operation, makes the sludge scraping work more smooth, and improves the sludge treatment efficiency. The systems have clear division of labor, the transmission system can effectively adjust the power according to the working requirement of the sludge scraping system, reduces the equipment failure caused by power transmission problem, prolongs the service life of the equipment, and ensures the stable operation of the equipment.

[0038] Meanwhile, the power system is arranged outside the sludge pool, which facilitates the daily maintenance and repair of the power system, avoids the influence of the complex environment in the sludge pool on the power system, and reduces the maintenance cost and difficulty.

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

[0040] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, below the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative effort based on these drawings.

[0041] Figure 1 Structure diagram of the sludge scraping device suitable for the closed sludge tank according to the embodiment of the present application Figure 1 ;

[0042] Figure 2 Structure diagram of the sludge scraping device suitable for the closed sludge tank according to the embodiment of the present application Figure 2 ;

[0043] Figure 3 Structure diagram of the sludge scraping device suitable for the closed sludge tank according to the embodiment of the present application Figure 3 ;

[0044] Figure 4 Structure diagram of the transmission system in the present application Figure 3 ;

[0045] Figure 5 Structure diagram of the sealing system in the present application Figure 1 ;

[0046] Figure 6 Structure diagram of the fixed plate in the present application Figure 5 ;

[0047] Figure 7 Structure diagram of the power system in the embodiment of the present application Figure 1 ;

[0048] Figure 8 Structure diagram of the power system in the embodiment of the present application Figure 2 ;

[0049] Figure 9 Structure diagram of the eccentric power mechanism in the present application Figure 7 ;

[0050] Figure 10 Structure diagram of the driving rod in the present application Figure 7 ;

[0051] Figure 11 Structure diagram of the sludge scraping system and the transmission system in the embodiment of the present application

[0052] Figure 12 Structure diagram of the scraper in the present application Figure 11 ;

[0053] Figure 13 Structure diagram of the scraper in the present applicationFigure 11 Side view of the scraper component;

[0054] Figure 14 for Figure 11 Schematic diagram of the middle connector;

[0055] Figure 15 for Figure 11 Schematic diagram of the middle connecting shaft;

[0056] Figure 16 This is a schematic diagram of the connection structure between the scraper assembly and the guide rail in a specific embodiment of the present invention;

[0057] Figure 17 for Figure 9 A three-dimensional view of the eccentric power mechanism structure;

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

[0059] Transmission system 2, first link 20, second link 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 link 24, fourth link 25, base 26;

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

[0061] Sealing system 4, sealing sleeve 43, sealing element 44, first end 440, second end 441, pressure block 45, annular part 450, protrusion part 451, sealing nut 46, threaded connection part 460, locking part 461, fixing plate 47, flat surface 470, bolt 471, annular flange 472, chamfer 473;

[0062] Drive rod 5, connecting rod body 50, connector 51, booster block 52;

[0063] Sludge pond 6. Detailed Implementation

[0064] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0065] The following is in conjunction with the appendix Figure 1 To be continued Figure 16 The invention will be described in detail with specific embodiments:

[0066] like Figures 1-16 As shown, this invention discloses a sludge scraping device suitable for closed sludge tanks, installed inside the sludge tank 6. In this embodiment, the sludge tank 6 is a double-layered sealed chamber, which can better block the leakage path of radioactive materials and prevent environmental pollution. The sludge scraping device includes:

[0067] Power system 1, wherein the power system 1 is disposed outside the sludge tank 6;

[0068] The transmission system 2 is installed inside the sludge tank 6. The transmission system 2 has an input end and an output end. The input end of the transmission system 2 is connected to the power system 1 through a drive rod 5.

[0069] The sludge scraping system 3 includes a scraper assembly 30 and guide rails 31 fixedly installed on both sides of the sludge tank 6. The two ends of the scraper assembly 30 are slidably installed 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 elongated and can be fixed in the sludge tank 6 by welding or bolts, and grooves are provided on the two inner sides of the two guide rails 31 that are opposite to each other along their length.

[0070] A sealing system 4 is provided at the connection between the drive rod 5 and the sludge tank 6.

[0071] The mud scraping device suitable for the closed sludge tank in the application, the power system 1 is arranged outside the sludge tank 6, generates power after starting, and transmits the power to the input end of the transmission system 2 located in the sludge tank 6 through the driving rod 5. The transmission system 2 converts it into a power form suitable for the operation of the mud scraping system 3, and outputs from the output end. Then, the scraper assembly 30 of the mud scraping system 3 is slidably arranged at both ends in the guide rail 31 fixed to the two sides of the sludge tank 6, respectively, and the power output by the transmission system 2 drives the scraper assembly 30 to make reciprocating motion along the guide rail 31, so as to realize the scraping operation of the sludge in the sludge tank. The sealing system 4 is arranged at the connection between the driving rod 5 and the sludge tank 6, so that the sludge and other pollutants in the sludge tank cannot leak out through the gap between the driving rod 5 and the sludge tank 6 during power transmission, and the sealing property of the closed sludge tank is ensured.

[0072] The mud scraping device in the application can more efficiently convert power into the movement required for the mud scraping operation through the cooperation of the independent power system 1, the transmission system 2 and the mud scraping system 3, so that the mud scraping operation is more smooth, and the sludge treatment efficiency is improved. The systems have clear division of labor, the transmission system 2 can effectively adjust the power according to the working requirement of the mud scraping system 3, reduces the equipment failure caused by power transmission problem, prolongs the service life of the equipment, and ensures the stable operation of the equipment.

[0073] Meanwhile, the power system 1 is arranged outside the sludge tank 6, so that the routine maintenance and repair of the power system 1 are facilitated, and the influence of the complex environment in the sludge tank 6 on the power system 1 is avoided, thereby reducing the maintenance cost and difficulty.

[0074] In addition, the sealing system 4 is arranged in the mud scraping device, so that the sludge leakage problem is effectively avoided, the treatment environment in the sludge tank is ensured, the environmental protection requirement is met, and the pollution to the surrounding environment is prevented.

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

[0076] The transmission system 2 comprises 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] As shown in the accompanying drawings, Figure 4 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] The first connecting rod 20 and the second connecting rod 21 are hinged to the driving rod 5 at one end, and are hinged to the two first input free ends 222 of the first X-shaped shear arm assembly 22 at the other end respectively; the fixed hinge point 221 of the first X-shaped shear arm assembly 22 is fixed in the sludge pool 6, and the two second input free ends 232 of the second X-shaped shear arm assembly 23 are hinged to the two first output free ends 223 of the first X-shaped shear arm assembly 22 respectively, and the two second output free ends 233 of the second X-shaped shear arm assembly 23 are hinged to one end of the third connecting rod 24 and the fourth connecting rod 25 respectively; the other end of the third connecting rod 24 and the fourth connecting rod 25 are hinged to the scraper assembly 30.

[0079] During operation, since one end of the first connecting rod 20 and the second connecting rod 21 is hinged to the driving rod 5, the movement of the driving rod 5 drives the synchronous movement of the two connecting rods, 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 takes the fixed hinge point 221 fixed in the sludge pool 6 as the fulcrum, and when the first connecting rod 20 and the second connecting rod 21 drive the movement of the two first input free ends 222, it converts this movement into the movement of the two first output free ends 223 according to the principle of lever and the characteristics of hinge structure, and the direction and amplitude of the movement are changed accordingly.

[0080] Then, the two first output free ends 223 of the first X-shaped shear arm assembly 22 are hinged to the two second input free ends 232 of the second X-shaped shear arm assembly 23, so as to transmit power to the second X-shaped shear arm assembly 23 and make it start to move with the hinge point 231 as the center. The second X-shaped shear arm assembly 23 transmits the power from the two second input free ends 232 of the first X-shaped shear arm assembly 22 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 to the scraper assembly 30 through the third connecting rod 24 and the fourth connecting rod 25 respectively, driving the scraper assembly 30 to make reciprocating movement along the guide member 31, and realizing the actual operation of scraping sludge.

[0081] The transmission system 2 can accurately and flexibly convert the linear reciprocating movement of the driving rod 5 into the required movement form of the scraper assembly 30 through the combination of connecting rods and X-shaped shear arm assemblies, which is highly adaptable to the complex working conditions of the sludge pool 6, greatly improves the efficiency and effect of sludge scraping.

[0082] At the same time, the cooperation of multiple connecting rods and double X-shaped shear arm assemblies makes the power evenly distributed during transmission, avoids stress concentration, effectively reduces the risk of damage of parts due to excessive local stress, enhances the stability and reliability of the transmission system, and prolongs the overall service life of the equipment.

[0083] In addition, the entire transmission system 2 is compact in structure, and can efficiently complete power transmission and motion conversion in a limited internal space of the sludge pool 6, reduce space occupation, and improve equipment integration.

[0084] More specifically, in the embodiment, the fixed hinge point 221 of the first X-shaped shear arm assembly 22 is arranged at a position close to the first input free end 222. From the perspective of the principle of leverage, the fixed hinge point 221 close to the first input free end 222 makes the input arm of the first X-shaped shear arm assembly 22 relatively short and the output arm relatively long during force transmission, so that the amplification effect of force can be achieved to a certain extent. When the power system transmits force to the first X-shaped 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 beneficial to driving the scraper assembly 30 to perform sludge scraping work, and in particular, when high-viscosity and high-resistance sludge is handled, the resistance can be overcome more effectively to ensure the sludge 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 points, and the connection between the upper member and the lower member is achieved by the bolts, so that the X-shaped shear arm assembly and the connecting rod can rotate around the bolts.

[0086] Further, in some specific embodiments, as shown in Figures 7-10 The power system 1 comprises:

[0087] a power member for providing power; in the embodiment, the power member is a motor;

[0088] a box body 12, which has an accommodation space 120 inside;

[0089] a main power mechanism 13, which is installed in the accommodation space 120 of the box body 12 and is in transmission connection with the power member;

[0090] an eccentric power mechanism 14, which is installed in the accommodation space 120 of the box body 12 and is in transmission connection with the main power mechanism 13; an output end of the eccentric power mechanism 14 is connected with the driving rod 5 to push the reciprocating movement of the driving rod 5.

[0091] When the power system 1 in the application works, the power member is started, 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 converts the rotary motion into linear reciprocating motion by using the eccentric structure principle, the output end is connected to the driving rod 5, so as to drive the driving rod 5 to move reciprocatingly. The driving rod 5 can be further connected to the sludge scraping system or other operation components in the closed sludge tank, so as to realize the sludge scraping operation and meet the sludge treatment process requirement.

[0092] The continuous transmission link of the power member in the power system 1 through the main power mechanism 13 to the eccentric power mechanism 14 not only guarantees the continuous and stable power supply, avoids the pause and interruption in the power transmission process, and ensures the continuous sludge treatment operation, but also converts the rotary motion into linear reciprocating motion through the eccentric structure, so as to adapt to the motion requirement of the sludge scraping system and other operation components.

[0093] Specifically, the main power mechanism 13 comprises a main shaft 130 and a first driving gear 131 installed on the main shaft 130. The two ends of the main shaft 130 are respectively installed on the side wall of the box body 12. The connection part between the main shaft 130 and the box body 12 is provided with a bearing, which supports the two ends of the main shaft 130, so as to realize the rotary connection between the main shaft 130 and the box body 12.

[0094] More specifically, a second driving gear 132 can also be arranged at the input end of the main shaft 130, which is used for transmission connection with the power member. In the embodiment, the second driving gear 132 is transmission connected with the power member through a speed reducer.

[0095] Specifically, the eccentric power mechanism 14 comprises two parallel arranged driven gears 140, a connecting rod 141 connected with the two driven gears 140 at both ends, and two driven shafts 142 fixedly installed on the side of the driven gears 140 close to the side wall of the box body 12. The connection part between the driven shaft 142 and the box body 12 is provided with a bearing, which supports the end of the driven shaft 142, so as to realize the rotary connection between the driven shaft 142 and the box body 12.

[0096] The two driven gears 140 are in meshing transmission with the first driving gear 131, so as to realize the power transmission. The connecting rod 141 is arranged away from the center of the driven gear 140, and the connecting rod 141 is connected with the driving rod 5. In the embodiment, the two driven gears 140 are symmetrically arranged, the connecting rod 141 is horizontally arranged and located close to the outer edge of the driven gear 140, so as to avoid the torque imbalance, and at the same time, the eccentricity can be used to the greatest extent to realize the effective conversion of the rotary motion to the linear reciprocating motion, so as to ensure that the displacement change amplitude of the connecting rod 141 in the horizontal direction is maximum.

[0097] Two parallel driven gears 140 are connected by connecting rods 141 to form a relatively stable mechanical structure. When the driven gears 140 receive power from the driving mechanism 13 and rotate, due to the coordinated action of the two gears, they balance each other, making the power output of the entire eccentric driving mechanism 14 more stable, avoiding phenomena such as vibration and jamming caused by uneven force on one side, providing stable reciprocating motion driving force for the driving rod 5 and ensuring smooth progress of sludge treatment operations.

[0098] At the same time, the connecting rod 141 is arranged offset from the center of the driven gear 140, utilizing the eccentric principle to convert the rotational motion of the driven gear 140 into linear reciprocating motion and directly transmit it to the driving rod 5. The structure is simple, compared to complex multi-stage transmission conversion, reducing energy loss in intermediate links, improving mechanical efficiency, and enabling stronger and more stable linear reciprocating power to drive the mud scraping system or other operating components, meeting the needs of sludge treatment for motion form and power intensity.

[0099] Specifically, the driving rod 5 is also designed in detail, as shown in Figure 10 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 boost block 52 arranged at the other end of the connecting rod body 50. The connecting head 51 is used to connect with the mud scraping system to realize mud scraping operation. The boost block 52 is long strip-shaped, with a long rectangular through hole in the middle. Correspondingly, the connecting rod 141 in the eccentric driving mechanism 14 is placed in the through hole in the middle of the boost block 52. The long strip-shaped boost block 52 can to some extent play the role of reciprocating motion, similar to the principle of a lever. When the connecting rod 141 pushes the boost block 52, due to the shape characteristics of the boost block 52, it can more effectively convert the force from the connecting rod 141 into driving force for pushing the mud scraping system, enhancing the mud scraping effect.

[0100] More specifically, the connecting rod body 50 and the boost block 52 are connected by threads, facilitating disassembly and installation.

[0101] Further, in some specific embodiments, the scraper assembly 30 includes a scraper 301, as shown in Figure 13As shown, the scraper member 301 comprises a fixed part 301-1, a first scraper part 301-2 and a second scraper part 301-3 connected in sequence; the fixed part 301-1 is used to connect with the output end of the transmission system 2; the slope of the second scraper part 301-3 matches the slope of the bottom surface of the sludge pool 6, so that the second scraper part 301-3 is closely placed on the bottom surface of the sludge pool 6, and the second scraper part 301-3 and the first scraper part 301-2 are arranged at an obtuse angle. The slope of the second scraper part 301-3 matches the slope of the bottom surface of the sludge pool 6, so that it can be closely attached to the bottom of the pool. When the scraper assembly 30 is running, it can effectively clean the sludge in each corner of the pool bottom, avoid the situation that the sludge is left due to poor adhesion, realize comprehensive and efficient sludge scraping operation, and improve the thoroughness of sludge cleaning. And because the second scraper part 301-3 first contacts the sludge, it can initially cut into and agitate the sludge, loosen the thicker or harder 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 beneficial to the forward pushing of the sludge.

[0102] When moving forward, the downward force of the sludge on the scraper member 301 causes the scraper member 301 to adhere to the bottom surface of the sludge groove, ensuring that the scraper member 301 is in full contact with the bottom surface, maximizing the removal of sludge, reducing residue, and improving the thoroughness of sludge scraping. When the scraper member 301 retreats, the upward force of the residual sludge on the scraper member 301 causes the scraper member 301 to separate from the bottom surface of the sludge pool 6, effectively reducing the carrying of sludge by the scraper member 301 during the return, avoiding the re-entry of the scraped sludge into the sludge pool 6, reducing the workload of repeated sludge scraping, and improving the overall efficiency of sludge scraping operation.

[0103] More specifically, the side of the second scraper part 301-3 away from the first scraper part 301-2 is a slope, which is beneficial to the sludge scraping operation.

[0104] Further, in some embodiments, the scraper assembly 30 further comprises a connecting piece 32, which is clamped into the groove of the guide rail 31 at both ends. Through the cooperation of the connecting piece 32 at both ends and the guide rail 31, the scraper assembly 30 can travel along the fixed line when advancing or retreating, preventing deviation. One side of the connecting piece 32 is connected to the scraper piece 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 piece 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 advances or retreats, the third connecting rod 24 and the fourth connecting rod 25 rotate around the pin shaft and push the scraper system 3 to advance or retreat; when recycling, 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 operation space.

[0105] The fixed part 301-1 of the scraper piece 301 is provided with three flange structures 301-4 arranged at intervals along the width direction thereof, and the flange structures 301-4 are provided with first through holes.

[0106] The connecting piece 32 is provided with three groove structures 321 matched with the flange structures 301-4 on the side close to the scraper piece 301, and limit grooves 322 are correspondingly formed, and the limit grooves 322 are provided with second through holes opposite to the first through holes.

[0107] The flange structures 301-4 of the scraper piece 301 are embedded and installed in the groove structures 321 of the connecting piece 32, and the connecting shaft 33 is sequentially inserted and installed into the first through holes and the second through holes, so as to realize the connection between the scraper piece 301 and the connecting piece 32.

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

[0109] Meanwhile, the design of the flange structures 301-4 and the groove structures 321 makes the installation, disassembly and the like between the scraper piece 301 and the connecting piece 32 more convenient. When it is necessary to replace or maintain the scraper piece 301, the connecting shaft 33 is removed, and then the scraper piece 301 can be separated from the connecting piece 32, which is simple to operate.

[0110] In addition, the arrangement of the plurality of flange structures 301-4 disperses the connecting force of the scraper 301 and the connecting member 32 to different positions, avoiding excessive local stress caused by the concentration of the connecting point in one place. It helps to evenly distribute the force generated during the mud scraping process on the entire connecting structure, reduces stress concentration of the connecting components, improves the carrying capacity of the structure, prolongs the service life of the connecting components, and ensures the reliability of the mud scraping device during long-term use.

[0111] Further, in some embodiments, as shown in Figure 5 、 6 , the sealing system 4 is installed at the connection between the drive rod 5 and the sludge pool 6, which 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 at the side wall of the sludge pool 6 and is sleeved outside the drive rod 5; the outer wall surface of the sealing sleeve 43 is provided with external threads; it should be noted that the fixed installation form of the sealing sleeve 43 is not limited, such as welding, bolted connection, etc. In this embodiment, the sealing sleeve 43 is welded and fixed at the side wall of the sludge pool 6, which has good welding stability.

[0113] The sealing member 44 is installed between the drive rod 5 and the sealing sleeve 43, and the first end 440 of the sealing member 44 abuts against the side wall of the sludge pool 6. In this embodiment, the sealing member 44 is made of rubber. The rubber sealing member 44 can be compressed between the drive rod 5 and the sealing sleeve 43 to fill the small gap between them. Due to the elasticity of rubber, it can adapt to different assembly tolerances and deformations under working conditions, effectively preventing leakage of sludge, sewage and other media from between the drive rod 5 and the sealing sleeve 43, and ensuring the sealing effect. At the same time, in the environment of the sludge pool 6, there are various chemicals and microorganisms. Rubber material has certain corrosion resistance and can resist the erosion of acidic and alkaline substances and microorganisms in the sludge, prolonging the service life of the sealing member 44 and reducing the maintenance cost and workload caused by frequent replacement of the sealing member.

[0114] The pressing block 45 is installed between the drive 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, achieving compression of the sealing member 44.

[0115] The sealing nut 46 includes a threaded connection part 460 and a locking part 461 perpendicular to the threaded connection part 460; the threaded connection part 460 is provided with internal threads and is sleeved on the outer wall surface of the sealing sleeve 43 and is in threaded connection with the sealing sleeve 43; the locking part 461 abuts against the other end of the pressing block 45.

[0116] The sealing system 4 in the present application adopts the threaded connection between the threaded connection part 460 of the sealing nut 46 and 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, the locking part 461 of the sealing nut 46 will exert pressure on the pressing block 45, so that the pressing block 45 further presses the sealing element 44, which can effectively ensure that the sealing element 44 is always in a compressed state, thereby better filling the gap between the drive 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 43, avoid damage to the sealing element 44 in the sealing sleeve 43, and prolong the service life of the sealing system 4.

[0117] At the same time, the locking part 461 of the sealing nut 46 abuts against the other end of the pressing block 45, and together with the sealing sleeve 43, the pressing block 45 and the sealing element 44 forms a stable sealing structure, which can resist the influence of factors such as pressure changes inside the sludge tank 6 and vibrations during equipment operation on the sealing effect, and ensure that the sealing system 4 works stably for a long time in a complex working environment.

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

[0119] Further, in some specific embodiments, as shown in Figures 5-6 The sealing system 4 further comprises a fixing plate 47.

[0120] The fixing plate 47 is sleeved outside the drive rod 5 and fixedly installed at the side wall of the sludge tank 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 tank 6 is a plane 470, and the plane 470 of the fixing plate 47 is installed on the side wall of the sludge tank 6, effectively preventing leakage of sludge and the like from the connection between the drive rod 5 and the side wall of the sludge tank 6, further improving the sealing integrity of the entire sealing system 4, and minimizing the risk of leakage.

[0121] In the present embodiment, the fixing plate 47 is made of hard plastic or metal. The fixing plate 47 can be fixed in various ways, such as welding, buckle connection, bolt connection, etc. In the present embodiment, the fixing plate 47 is fixedly installed at the side wall of the sludge tank 6 by three bolts 471 evenly distributed along the circumferential direction. The bolt connection makes the installation process of the fixing plate 47 relatively simple, and facilitates installation and removal. 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 avoid deformation or loosening of the fixing plate 47 due to uneven local stress, thereby better fitting the side wall of the sludge tank 6 and ensuring the sealing effect.

[0122] Specifically, as shown in Figure 6 The annular flange 472 can increase the overall structural strength of the fixed plate 47, so that the fixed plate 47 can play a reinforcing role like a reinforcing rib when bearing pressure from the inside of the sludge pool 6 or external impact force, preventing the fixed plate 47 from deforming, thereby better maintaining the stability of the sealing system 4. At the same time, when there is a small amount of leakage or the fixed plate 47 is contacted by sludge, the annular flange 472 can play a certain guiding role to sludge and the like, reducing the risk of corrosion or damage to the drive rod 5 and the sealing system 4.

[0123] The annular flange 472 can increase the overall structural strength of the fixed plate 47, so that the fixed plate 47 can play a reinforcing role like a reinforcing rib when bearing pressure from the inside of the sludge pool 6 or external impact force, preventing the fixed plate 47 from deforming, thereby better maintaining the stability of the sealing system 4. At the same time, when there is a small amount of leakage or the fixed plate 47 is contacted by sludge, the annular flange 472 can play a certain guiding role to sludge and the like, reducing the risk of corrosion or damage to the drive rod 5 and the sealing system 4.

[0124] In addition, the bevel 473 can avoid the outer edge of the annular flange 472 being too sharp. During equipment installation, maintenance or daily operation, it prevents the operator from being scratched or damaged when colliding with the annular flange 472.

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

[0126] The pressure block 45 includes a circular ring part 450 and a protruding part 451 provided at one end of the circular ring part 450 away from the side wall of the sludge pool 6. The circular ring part 450 is arranged between the drive rod 5 and the sealing sleeve 43, and the circular ring part 450 is stopped at the second end 441 of the sealing element 44 away from the protruding part 451.

[0127] The outer wall surface of the protruding part 451 close to the circular ring part 450 is stopped at one end of the sealing sleeve 43 away from the side wall of the sludge pool 6.

[0128] When the sealing nut 46 is tightened, the locking part 461 will exert pressure on the protruding part 451 in the pressure block 45, so that the circular ring part 450 in the pressure block 45 further compresses the sealing element 44, which can effectively ensure that the sealing element 44 is always in a compressed state, thereby better filling the gap between the drive rod 5 and the sealing sleeve 43, enhancing the sealing effect, and preventing leakage of the medium in the sludge pool.

[0129] Meanwhile, due to the arrangement of the protruding part 451, when the locking part 461 of the sealing nut 46 applies pressure on the protruding part 451, the protruding part 451 can serve as a good pressure conducting structure, so that the pressure can be transmitted from the protruding part 451 to the annular part 450 in a more direct and concentrated manner, thereby ensuring that the annular part 450 can apply sufficient and effective pressure to the sealing member 44, so that the sealing member 44 can better play a sealing role. In addition, the outer wall surface of the protruding part 451 on the side close to the annular part 450 abuts against one end of the sealing sleeve 43 away from the side wall of the sludge pool 6, so that the abutting action of the protruding part 451 and the sealing sleeve 43 can prevent the displacement or tilting of the pressing block 45, thereby maintaining the stability of the entire sealing structure.

[0130] It should be noted that the specific material of the components in the sludge scraping device in the present application is not limited, which can be selected by those skilled in the art according to the actual situation. For example, in the present embodiment, the sludge scraping device is mainly used in the field of radioactive waste liquid treatment, so the corresponding key components inside the sludge pool 6 need to be provided with special coating, such as boron polyethylene composite material. In addition, the surface of the scraper 301 can also be coated with a radiation-resistant ceramic coating to prevent secondary pollution caused by the adhesion of radioactive sludge.

[0131] The above describes the present application by means of specific embodiments, but it should be understood that the specific description should not be understood as limiting the essence and scope of the present application. Various modifications of the above embodiments made by those skilled in the art after reading the present specification all belong to the scope of the present application.

Claims

1. A sludge scraping device suitable for use in a closed sludge lagoon, installed within the sludge lagoon, characterized in that: The mud scraping device comprises: a power system arranged outside the sludge pool; a transmission system arranged inside the sludge pool, the transmission system having an input end and an output end, the input end of the transmission system being connected to the power system through a driving rod; a mud scraping system comprising a scraper assembly and guide rail members fixedly installed on both sides of the sludge pool, both ends of the scraper assembly being slidingly installed in the guide rail members, and the scraper assembly being connected to the output end of the transmission system; a sealing system arranged at the connection between the driving rod and the sludge pool; the sealing system comprises: a sealing sleeve fixedly installed on the side wall of the sludge pool and sleeved on the outside of the driving rod; a sealing member installed between the driving rod and the sealing sleeve, a first end of the sealing member abutting against the side wall of the sludge pool; a pressing block installed between the driving rod and the sealing sleeve, one end of the pressing block abutting against a second end of the sealing member; a sealing nut comprising a threaded connecting portion and a locking portion perpendicular to the threaded connecting portion, the threaded connecting portion being sleeved on the outer wall surface of the sealing sleeve and being threadedly connected to the sealing sleeve, and the locking portion abutting against the other end of the pressing block; a fixed plate sleeved on the outside of the driving rod and fixedly installed on the side wall of the sludge pool away from the sealing sleeve; the power system comprises: a power member for providing power; a box having an accommodating space inside; a main power mechanism installed in the accommodating space of the box and being in driving connection with the power member; an eccentric power mechanism installed in the accommodating space of the box and being in driving connection with the main power mechanism, the output end of the eccentric power mechanism being connected to the driving rod to push the reciprocating movement of the driving rod.

2. The mud scraping device suitable for a closed sludge pool according to claim 1, wherein: 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; the first X-shaped shear arm assembly has a fixed hinge point, two first input free ends and two first output free ends, and 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 with the driving rod, and the other end is respectively hinged with two first input free ends of the first X-shaped shear arm assembly; the fixed hinge point of the first X-shaped shear arm assembly is fixed in the sludge pool, and two second input free ends of the second X-shaped shear arm assembly are respectively hinged with two first output free ends of the first X-shaped shear arm assembly; two second output free ends of the second X-shaped shear arm assembly are respectively hinged with one end of the third connecting rod and the fourth connecting rod; the other end of the third connecting rod and the fourth connecting rod are hinged with the scraper assembly.

3. The sludge scraping device suitable for a closed sludge pool 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 suitable for a closed sludge pool according to claim 1, characterized in that: The scraper assembly comprises a scraper piece, and the scraper piece comprises a fixed part, a first scraper part and a second scraper part connected in sequence; the fixed part is used for connecting with the output end of the transmission system; the slope of the second scraper part matches the slope of the bottom surface of the sludge pool, so that the second scraper part is placed on the bottom surface of the sludge pool, and the second scraper part and the first scraper part are arranged at an obtuse angle.

5. The sludge scraping device suitable for a closed sludge pool according to claim 4, characterized in that: The side of the second scraper part away from the first scraper part is a bevel.

6. The sludge scraping device suitable for a closed sludge pool according to claim 4, characterized in that: The scraper assembly further comprises a connecting piece, one side of the connecting piece is connected with the scraper piece through a connecting shaft, and the other side is connected with the transmission system; The fixed part of the scraper piece is provided with three flange structures arranged at intervals along the width direction of the fixed part, and the flange structures are provided with first through holes; The connecting piece close to the scraper piece is provided with three groove structures matched with the flange structures and forming limiting grooves, and the limiting grooves are provided with second through holes opposite to the first through holes; The flange structure of the scraper piece is embedded and installed in the groove structure of the connecting piece, and the connecting shaft is sequentially inserted and installed into the first through hole and the second through hole, so as to realize the connection between the scraper piece and the connecting piece.

7. The sludge scraping device suitable for a closed sludge pool according to claim 6, 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 at the rectangular inner grooves through a pin.

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