Environment-friendly sludge treatment equipment

Abstract

The present application relates to the field of sludge treatment, in particular to an environment-friendly sludge treatment equipment. The equipment comprises a sludge suction pump and a dehydration mechanism connected with the sludge suction pump. The dehydration mechanism comprises a treatment box and a pipeline. A rotating screen cylinder is arranged in the pipeline. The dehydration mechanism further comprises a filter pressing assembly and a disturbance assembly arranged in the treatment box in sequence from top to bottom. A linkage is arranged between the filter pressing assembly and the disturbance assembly. A medicament nozzle for spraying a solidifying agent is arranged on the treatment box opposite to the disturbance assembly. A discharge passage is arranged on the treatment box below the disturbance assembly. The present application realizes efficient dehydration of sludge and formation of sludge cake through the synchronous operation of the conveying belt and the pressure belt and the pressure roller. The linkage drives the disturbance assembly to uniformly disturb the sludge cake, which improves the mixing effect of the solidifying agent, thereby completing the continuous operation of dehydration and stabilization treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sludge treatment, in particular to an environment-friendly sludge treatment equipment. BACKGROUND

[0002] With the acceleration of urbanization, the amount of sludge generated in river channels, lakes and municipal engineering increases year by year. The traditional sludge treatment method is to use natural drying or simple dehydration and landfill, which not only occupies a large area and has low treatment efficiency, but also easily causes secondary environmental pollution. The current sludge treatment equipment on the market generally has the problems of poor dehydration effect, high energy consumption, limited treatment capacity, incomplete removal of harmful substances and the like, which is difficult to meet the increasingly strict environmental protection requirements and the demand for efficient resource utilization.

[0003] At present, the patent CN117142732A discloses a sludge solidification device based on environmental protection management, which comprises a sludge suction cylinder, a flange plate is welded in the middle of the sludge suction cylinder, the flange plate is used for connecting the sludge suction cylinder with an engineering carrier, a suction duckbill is arranged at the front end of the sludge suction cylinder, two groups of conveying scroll dragons are arranged in the sludge suction cylinder, the conveying scroll dragons are used for sucking sludge, a crushing roller is connected with one end of the conveying scroll dragon through a transmission connecting mechanism, one end of the crushing roller is fixedly connected with a extrusion roller, a stirring bin is arranged at the rear part of the sludge suction cylinder, two groups of stirring shafts are arranged in the stirring bin, the stirring shafts are fixedly connected with the extrusion roller, stirring rods are arranged on the stirring shafts and used for stirring and mixing the sludge and the solidifying agent, a driving motor is connected with one end of the stirring shaft, a solidifying agent mixing hopper is arranged above the front part of the stirring bin, a solidifying agent conveying pipe is connected with one side of the solidifying agent mixing hopper, the solidifying agent conveying pipe and the solidifying agent mixing hopper are used for adding the solidifying agent into the dehydrated sludge, and a dry sludge discharge port is formed at the rear part and lower part of the solidifying agent mixing hopper.

[0004] The above device can extrude and discharge the excess water in the sludge by sucking and extruding the sludge, reduce the use amount of the solidifying agent and the cost, and the conveying scroll dragon and the crushing roller can crush the organic matter in the sludge, reduce the difficulty of sludge solidification treatment, and avoid the blockage of the organic matter. However, the high-viscosity substances may adhere to the conveying scroll dragon and the crushing roller, affecting the normal operation of the equipment and possibly causing frequent maintenance requirements; in addition, the solidifying agent is not uniformly mixed with the sludge during use, which may cause poor solidification effect. Therefore, there is a need for an environment-friendly sludge treatment equipment which can remove particulate impurities and effectively mix the solidifying agent and the sludge. SUMMARY

[0005] In view of the problems existing in the prior art, the present application provides an environment-friendly sludge treatment equipment, which realizes efficient dewatering and mud cake forming of sludge through the pressure of the synchronously operated conveying belt, pressure belt and pressure roller, and uniformly disturbs the mud cake through the disturbance assembly driven by the linkage to improve the mixing effect of the solidifying agent, thereby completing the continuous operation of dewatering and stabilization treatment.

[0006] To solve the problems in the prior art, the present application provides an environment-friendly sludge treatment equipment, which comprises a sludge suction pump and a dewatering mechanism connected therewith, the dewatering mechanism comprises a treatment box and a pipeline connected between the treatment box and the sludge suction pump, a rotating screen cylinder for entering sludge to screen out particulate impurities is arranged in the pipeline, a material falling port for entering sludge into the treatment box is formed at the top of the treatment box, the dewatering mechanism further comprises a filter pressing assembly and a disturbance assembly arranged in the treatment box in sequence from top to bottom, a linkage is arranged between the filter pressing assembly and the disturbance assembly, a medicament spray head for spraying a solidifying agent is arranged at a position of the treatment box opposite to the disturbance assembly, and a discharge passage is arranged below the disturbance assembly in the treatment box, when the filter pressing assembly is started, the disturbance assembly is in a synchronous starting state under the driving of the linkage, so that the sludge is immediately mixed with the solidifying agent after being drained.

[0007] Preferably, the filter pressing assembly comprises a conveying belt and a pressure belt capable of synchronous and same direction movement, the conveying belt and the pressure belt have a starting point for entering sludge and a terminal point for discharging mud cake, and an enclosed space for filter pressing sludge is formed between the conveying belt and the pressure belt in the working state of the conveying belt and the pressure belt, so that the sludge enters the lower area in the form of mud cake.

[0008] Preferably, a plurality of pressure rollers for the conveying belt and the pressure belt to pass through in sequence are arranged in the treatment box in the form of staggered arrangement in the horizontal direction and at equal intervals, the surface of the conveying belt has filter holes for water pressure, and the conveying belt is located below the pressure belt, and in the working state of the conveying belt and the pressure belt, the sludge continuously enters the enclosed space and is in a pressure water discharge state under the action of the pressure rollers.

[0009] Preferably, the disturbance assembly comprises a conveying belt capable of conveying sludge towards the direction of the discharge passage and a disturbance member located above the conveying belt, and when the conveying belt is driven, the linkage is in a moving state, so that the disturbance member is in a synchronous movement state under the driving of the linkage.

[0010] Preferably, a moving plate for connecting the disturbance member is slidably arranged on the treatment box, a pressure rod cooperated with the linkage is rotatably arranged on the treatment box, one end of the pressure rod abuts against the moving plate, a torsional spring is arranged between the pressure rod and the rotation point, a rubber strip is arranged between the moving plate and the treatment box, and when the linkage moves to make the pressure rod swing, the moving plate is in a pressure state, so that the disturbance member operates.

[0011] Preferably, the processing box is provided with a first driving roller for driving the conveying belt and a second driving roller for driving the pressure belt, and the linkage is a cam structure mounted on the first driving roller, when the cam structure reciprocates along with the rotation of the first driving roller to act on the pressure rod, the moving plate drives the disturbing member to reciprocate towards the conveying belt, at this time, the torsional spring and the rubber strip are deformed and reset continuously.

[0012] Preferably, the disturbing member is a set of tooth-like structures distributed at equal intervals along the length direction of the moving plate, and the processing box is provided with a scraper corresponding to each tooth edge of the disturbing member for cooperating with the scraper during the movement of the disturbing member, when the disturbing member reciprocates to approach and move away from the conveying belt, the transported mud cake on the conveying belt is in a state of being continuously stirred, so that the mud cake and the curing agent are fully mixed for final curing.

[0013] Preferably, the processing box is provided with a buffer plate for preventing the sludge falling from the material falling port from directly impacting the pressure belt and a baffle for preventing the sludge falling into the back of the conveying belt.

[0014] Preferably, the processing box is provided with a water collecting groove corresponding to the lower half of the conveying belt and the pressure belt, and the processing box is further provided with a cleaning nozzle corresponding to the outside of the conveying belt and the pressure belt above each water collecting groove.

[0015] Preferably, the conveying belt is provided with a drainage groove mounted on the processing box, the drainage groove is provided with a hole plate for supporting the area of the mud cake transported by the conveying belt, and the conveying belt is a water-permeable fabric allowing excess water to penetrate into the drainage groove.

[0016] The beneficial effects of the present application compared with the prior art are:

[0017] 1. The present application forms an enclosed space for filtering sludge between the conveying belt and the pressure belt running in the same direction and synchronously, so that the sludge is subjected to continuous pressure in the enclosed space during movement. At the same time, since the conveying belt surface is provided with filter holes, the pressure belt closely adheres to the conveying belt and cooperates with the pressure rollers arranged alternately up and down to uniformly transmit the pressure to the sludge layer through the pressure belt, so that the water in the sludge is gradually squeezed out and discharged through the filter holes, realizing efficient solid-liquid separation.

[0018] As the water content decreases, the sludge is gradually compacted into a mud cake with a compact structure and a low water content, and is discharged from the conveying belt and the pressure belt into the lower area. The continuous and stable pressure filtration dewatering effect of the sludge is realized, the dewatering efficiency and the mud cake forming quality are improved, and the whole mechanical pressure filtration process is completed.

[0019] 2.The present application realizes the effective transmission and conversion of the power output of the conveying belt in the filter pressing assembly into the reciprocating motion of the disturbing member through the mechanical linkage structure of the linkage member and the disturbing assembly. Specifically, the cam structure installed on the first driving roller periodically acts on the pressing rod, drives the moving plate to reciprocate, and further drives the disturbing member to continuously disturb the mud cake on the conveying belt.

[0020] The equal-interval tooth-like structure adopted by the disturbing member, in combination with the scraper for removing residual sludge, ensures uniform and stable disturbance. The continuously turned and loosened mud cake during the conveying process breaks the crust structure, increases the contact area of the curing agent, and thus significantly improves the mixing efficiency and uniformity of the curing agent and the mud cake, providing reliable guarantee for the final curing and stabilization treatment of the mud cake.

[0021] 3.The present application effectively reduces the impact force of the sludge during falling through the buffer plate arranged between the material falling port and the pressure bearing belt, prevents the sludge from directly impacting the pressure bearing belt to cause local pressure unevenness or affect the running stability. Meanwhile, the baffle is arranged to block the sludge deviating from the falling path, avoiding the sludge from entering the back of the conveying belt to cause running obstruction. Through the synergistic effect of the buffer plate and the baffle, the effective guidance and control of the sludge falling process are realized, and the working environment and running efficiency of the filter pressing assembly are guaranteed.

[0022] In addition, the cleaning nozzle and the water collecting groove are arranged at the descending section of the conveying belt and the pressure bearing belt, the conveying belt and the pressure bearing belt are continuously washed by high-pressure water flow, and the sewage and impurities are collected and discharged, realizing the online automatic cleaning function. The residual particles are effectively removed to prevent clogging and pollution, prolonging the service life of the conveying belt and the pressure bearing belt and providing reliable guarantee for continuous and stable operation. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of an environment-friendly sludge treatment equipment.

[0024] Figure 2 It is a partial three-dimensional structural sectional view of an environment-friendly sludge treatment equipment.

[0025] Figure 3 It is a partial three-dimensional structural sectional view of a rotating screen cylinder of an environment-friendly sludge treatment equipment.

[0026] Figure 4 It is a planar sectional view of a rotating screen cylinder and a dehydration mechanism of an environment-friendly sludge treatment equipment.

[0027] Figure 5 It is a partial three-dimensional structural sectional view of a rotating screen cylinder and a dehydration mechanism of an environment-friendly sludge treatment equipment.

[0028] Figure 6It is a kind of environmental protection type sludge treatment equipment's processing box and dehydration mechanism's three-dimensional structure schematic view.

[0029] Figure 7 It is a kind of environmental protection type sludge treatment equipment's processing box and dehydration mechanism's partial front view.

[0030] Figure 8 It is a kind of environmental protection type sludge treatment equipment's filter press assembly's plane section view.

[0031] Figure 9 It is a kind of environmental protection type sludge treatment equipment's filter press assembly and disturbance assembly's plane section view.

[0032] Figure 10 It is a kind of environmental protection type sludge treatment equipment's disturbance assembly's partial three-dimensional structure section view.

[0033] The figure mark is: 1-sludge suction pump;2-dehydration mechanism;21-processing box;211-falling material mouth;212-chemical agent sprayer;213-discharge passage;22-pipeline;23-buffer plate;24-baffle;3-rotary screen cylinder;4-filter press assembly;41-conveyer belt;411-first drive roller;412-water receiving groove;413-cleaning sprayer;42-pressure bearing belt;421-second drive roller;43-closed space;44-pressure bearing roller;5-disturbance assembly;51-conveyer belt;511-drainage groove;512-hole plate;52-disturbance piece;521-moving plate;5211-rubber strip;522-scraping knife;6-linkage;61-pressing rod;62-torsion spring. DETAILED DESCRIPTION

[0034] In order to further understand the features, technical means and specific purposes and functions of the present application, the present application is described in detail below in combination with the drawings and specific embodiments.

[0035] Reference Figures 1-5It is a structural schematic diagram of the environment-friendly sludge treatment equipment in the embodiment, which comprises a sludge suction pump 1 and a dewatering mechanism 2 connected with the sludge suction pump 1. The dewatering mechanism 2 comprises a treatment box 21 and a pipeline 22 connected between the treatment box 21 and the sludge suction pump 1. The pipeline 22 is provided with a rotating screen cylinder 3 for the sludge to enter and screen out particulate impurities. The top of the treatment box 21 is provided with a material falling port 211 for the sludge to enter. The dewatering mechanism 2 further comprises a filter pressing assembly 4 and a disturbance assembly 5 arranged in the treatment box 21 from top to bottom in sequence. The filter pressing assembly 4 and the disturbance assembly 5 are provided with a linkage 6 therebetween. The treatment box 21 is provided with a medicament spray head 212 at a position opposite to the disturbance assembly 5 for spraying a solidifying agent. The treatment box 21 is provided with a discharging passage 213 below the disturbance assembly 5. When the filter pressing assembly 4 is started, the disturbance assembly 5 is in a synchronous starting state under the driving of the linkage 6, so that the sludge is mixed with the solidifying agent immediately after being drained.

[0036] When the filter pressing assembly 4 is started, the sludge is transported to the inside of the treatment box 21 through the pipeline 22 by the sludge suction pump 1. Before entering the treatment box 21, the sludge enters the rotating screen cylinder 3 arranged in the pipeline 22. The surface of the rotating screen cylinder 3 has holes and screen layers. The rotating screen cylinder 3 is used for preliminary screening of the sludge. During the transportation of the sludge to the treatment box 21 by the sludge suction pump 1, although the sludge suction pump 1 realizes fluid transportation by relying on pressure difference, a small amount of particulate impurities may be carried into the treatment box 21 due to the adhesion and solid-liquid mixing characteristics of the sludge. The particulate impurities attached to the sludge are removed, thereby effectively protecting the subsequent dewatering process and improving the overall treatment efficiency. The sludge after screening of impurities enters the inside through the material falling port 211 opened at the top of the treatment box 21 and falls on the filter pressing assembly 4. When the rotating screen cylinder 3 is cleaned, the rotating screen cylinder 3 is cleaned by the operator disassembling the pipeline 22.

[0037] At this time, the filter pressing assembly 4 starts to implement mechanical filter pressing dewatering operation on the sludge. The sludge in the filter pressing assembly 4 is subjected to pressure, so that the water in the sludge is squeezed out to realize solid-liquid separation. With the progress of the filter pressing process, the dewatered sludge gradually forms a mud cake with certain structural strength and moves downward to the area of the disturbance assembly 5.

[0038] At the same time, the medicament spray head 212 sprays the solidifying agent to the sludge during the disturbance process. The selection of the solidifying agent can include lime, cement or other chemical stabilizers according to actual engineering requirements, which mainly functions to further reduce the water content of the mud cake, enhance its structural strength, and effectively solidify harmful substances therein to prevent secondary pollution. The spraying process, with the cooperation of the disturbance assembly 5, can make the solidifying agent uniformly cover and penetrate into the inside of the mud cake, realizing rapid and sufficient mixing reaction.

[0039] At the same time, the medicament spray head 212 sprays the solidifying agent to the sludge during the disturbance process. The selection of the solidifying agent can include lime, cement or other chemical stabilizers according to actual engineering requirements, which mainly functions to further reduce the water content of the mud cake, enhance its structural strength, and effectively solidify harmful substances therein to prevent secondary pollution. The spraying process, with the cooperation of the disturbance assembly 5, can make the solidifying agent uniformly cover and penetrate into the inside of the mud cake, realizing rapid and sufficient mixing reaction.

[0040] Finally, the mud cake after the pressure filtration dehydration and the solidifying agent mixing treatment continues to move downward under the pushing action of the disturbance assembly 5, and is discharged outside the equipment through the discharge channel 213 arranged at the bottom of the treatment box 21.

[0041] Referring to Figs. 1 to 3, Figure 2 、 Figure 4 、 Figure 5 and Figure 8 , the pressure filtration assembly 4 comprises a conveying belt 41 and a pressure bearing belt 42 capable of synchronous and same direction movement, and has a starting point for sludge entering and an end point for mud cake discharging between the conveying belt 41 and the pressure bearing belt 42. In the working state of the conveying belt 41 and the pressure bearing belt 42, a closed space 43 for pressure filtration sludge is formed between the conveying belt 41 and the pressure bearing belt 42, so that the sludge enters the lower area in the form of mud cake.

[0042] When the pressure filtration assembly 4 starts to work, the conveying belt 41 and the pressure bearing belt 42 move synchronously and in the same direction. During the operation, the screened sludge enters between the conveying belt 41 and the pressure bearing belt 42 from the starting point and is gradually brought into the space between the two belts with the synchronous movement of the two belts. Since the conveying belt 41 is provided with filter holes and the pressure bearing belt 42 is closely attached to the conveying belt 41, a relatively closed space, i.e. the closed space 43, is formed between the two belts in the pressure filtration area, so that the sludge in the space is subjected to continuously increasing mechanical pressure.

[0043] The sludge between the conveying belt 41 and the pressure bearing belt 42 is subjected to continuously increasing pressure due to the combined action of the closed space 43 formed between the two belts and the compressible characteristics of the material itself.

[0044] When the screened sludge enters between the conveyor belt 41 and the pressure belt 42 from the starting point, the surface of the conveyor belt 41 is provided with filter holes, and the pressure belt 42 is tightly attached above it, and a certain clamping force is maintained between the two, and the sludge is taken into it with synchronous and same direction movement. At this time, the sludge is completely limited in the closed space 43 formed by the conveyor belt 41 and the pressure belt 42, and cannot flow freely or spread outward.

[0045] As the conveyor belt 41 and the pressure belt 42 continue to run forward, since the sludge itself is a mixture composed of solid particles and water, it has a certain compressibility, and when it is extruded in the closed space 43, the gap between the solid particles is further compressed, and the water is forced to separate from the gap between the particles and is discharged through the filter holes on the conveyor belt 41. As the water continues to decrease, the sludge as a whole becomes more compact, and the degree of compaction continues to improve, thus showing the phenomenon that the pressure it bears continues to increase. In addition, the synchronous running between the conveyor belt 41 and the pressure belt 42 ensures that the clamping state of the two to the sludge remains stable throughout the pressure filtration process, avoiding the loss of pressure due to misalignment or looseness.

[0046] As the water in the sludge is forced to seep out of the filter holes, the solid particles are gradually compacted into a mud cake with a certain structural strength. Finally, the formed mud cake is discharged from the terminal with the common movement of the conveyor belt 41 and the pressure belt 42, into the area below, completing the pressure filtration process.

[0047] Referring to Figure 4 , Figure 5 and Figures 8-10 , a plurality of pressure rollers 44 are provided in the treatment box 21 in the form of staggered and equal intervals in the horizontal direction, for the conveyor belt 41 and the pressure belt 42 to pass through in turn, the surface of the conveyor belt 41 has filter holes for water pressure, the conveyor belt 41 is located below the pressure belt 42, and in the working state of the conveyor belt 41 and the pressure belt 42, the sludge continuously enters the closed space 43 and is in a pressure water discharge state under the action of the pressure roller 44.

[0048] When the pressure filtration assembly 4 starts to run, the conveyor belt 41 and the pressure belt 42 move synchronously and in the same direction, and as the conveyor belt 41 and the pressure belt 42 run, they pass through each pressure roller 44 in turn, continuously maintaining the pressure effect on the sludge in the closed space 43.

[0049] When the screened sludge enters the closed space 43 between the conveying belt 41 and the pressure belt 42 from the starting point, it is immediately affected by the pressure applied by the pressure rollers 44 on the pressure belt 42 above. Since the pressure rollers 44 are arranged in an up-and-down staggered manner, they exert a mechanical pressure from top to bottom on the pressure belt 42, which is uniformly transmitted to the sludge layer through the pressure belt 42. As the conveying belt 41 continuously moves forward, the sludge successively passes through the action areas of multiple pressure rollers 44, and each pressure roller 44 cooperates with the pressure belt 42 to apply further compression pressure to the sludge, allowing the sludge to undergo a pressurization process in the closed space 43.

[0050] In this process, water in the sludge is squeezed out under pressure, and the water is discharged through the filter holes on the surface of the conveying belt 41, while the solid particles are gradually compacted into a mud cake with certain structural strength. As the key pressure applying element, the pressure roller 44 not only ensures the effective distribution of pressure throughout the length of the conveying belt 41, but also achieves continuous and stable pressure filtration dewatering effect on the sludge through its horizontal and up-and-down staggered layout, thus completing the entire mechanical pressure filtration process.

[0051] Referring to Figure 2 , Figure 4 and Figures 5-10 , the disturbance assembly 5 includes a conveying belt 51 capable of conveying the sludge towards the discharge passage 213 and a disturbance member 52 located above it. When the conveying belt 41 is driven, the linkage member 6 is in a state of motion, causing the disturbance member 52 to be in a state of synchronous motion under the driving of the linkage member 6.

[0052] When the conveying belt 41 of the pressure filtration assembly 4 is driven to operate, the disturbance assembly 5 is also started. In this process, the linkage member 6 forms a mechanical linkage relationship with the conveying belt 41, and as the conveying belt 41 continues to operate, the linkage member 6 is in a state of motion and drives the disturbance member 52 to keep synchronous motion through its driving action.

[0053] When the conveying belt 41 operates, the linkage member 6 transmits power to the disturbance member 52, causing the disturbance member 52 to produce a matching compound motion form above the conveying belt 51. This ensures that the disturbance member 52 can continuously and uniformly disturb the mud cake during its conveying process, and through the combination of the forward action of the conveying belt 51 and the dynamic disturbance of the disturbance member 52, the mud cake realizes structural loosening and uniform mixing during its movement towards the discharge passage 213, providing good process conditions for spraying the solidifying agent.

[0054] Referring to Figure 4 and Figures 5-10As shown, the processing box 21 is slidably provided with a moving plate 521 connected with the disturbing member 52 and a pressing rod 61 rotatably arranged on the processing box 21 and matched with the linkage member 6, one end of the pressing rod 61 abuts against the moving plate 521, a torsion spring 62 is arranged between the pressing rod 61 and the rotation point, and a rubber strip 5211 is arranged between the moving plate 521 and the processing box 21, when the linkage member 6 moves to drive the pressing rod 61 to swing, the moving plate 521 is in a pressed state, so that the disturbing member 52 is driven to act.

[0055] When the linkage member 6 moves, it drives the pressing rod 61 to swing around the rotation point, one end of the pressing rod 61 always abuts against the moving plate 521 and exerts pressure on the moving plate 521 during the swinging process. At this time, the torsion spring 62 arranged between the pressing rod 61 and the rotation point is deformed and generates a restoring force to provide elastic support for the resetting of the pressing rod 61. At the same time, the action of the moving plate 521 is reset through the rubber strip 5211.

[0056] With the moving plate 521 in a pressed state under the continuous pressure of the pressing rod 61, its movement drives the disturbing member 52 connected therewith to act synchronously, so as to realize the disturbing treatment of the mud cake. The power for driving the conveying belt 41 is transmitted and converted into the reciprocating swinging action of the disturbing member 52, which ensures that the disturbing process and the filter pressing process are kept in synchronization and coordination, and improves the operation efficiency.

[0057] Referring to Figure 4 and Figures 5-10 As shown, the processing box 21 is provided with a first driving roller 411 for driving the conveying belt 41 and a second driving roller 421 for driving the pressure belt 42, and the linkage member 6 is a cam structure installed on the first driving roller 411, when the cam structure cyclically and reciprocally acts on the pressing rod 61 following the rotation of the first driving roller 411, the moving plate 521 drives the disturbing member 52 to be in a reciprocating motion state towards the conveying belt 51, at this time, the torsion spring 62 and the rubber strip 5211 are deformed and reset continuously.

[0058] When the first driving roller 411 rotates under the driving of the power, the cam structure installed thereon rotates synchronously. The outer contour of the cam structure has periodic height changes, which cyclically and reciprocally acts on one end of the pressing rod 61 during the rotation process, so as to make the pressing rod 61 swing around the rotation point. At this time, the other end of the pressing rod 61 abuts against the moving plate 521 and exerts an alternating pressure on the moving plate 521 following the swinging thereof.

[0059] Under the continuous rotation of the cam structure, the dynamic plate 521 drives the disturbance piece 52 connected therewith to produce corresponding reciprocating motion towards the direction of the conveying belt 51 under the influence of pressure change. At the same time, the torsional spring 62 between the pressure rod 61 and the rotation point constantly deforms and recovers with the swinging of the pressure rod 61, providing a reset force for the pressure rod 61, so that it can continuously work along the motion track of the cam structure. The rubber strip 5211 arranged between the dynamic plate 521 and the treatment box 21 is also compressed and rebounded synchronously during the movement of the dynamic plate 521, which plays a reset role and effectively converts into the reciprocating motion of the disturbance piece 52, ensuring that the dewatered mud cake can be timely disturbed during the conveying process, thereby improving the mixing effect with the curing agent.

[0060] As shown in Figure 4 and Figures 5-10 , the disturbance piece 52 is specifically a set of tooth-like structures distributed at equal intervals along the length direction of the dynamic plate 521, and the treatment box 21 is provided with a scraper 522 corresponding to the edge of each tooth of the disturbance piece 52 to cooperate with the wall scraping during the movement of the disturbance piece 52. When the disturbance piece 52 cyclically and reciprocally approaches and moves away from the conveying belt 51, the mud cake conveyed on the conveying belt 51 is in a state of being constantly turned over, so that the mud cake and the curing agent are fully mixed for final curing.

[0061] When the disturbance piece 52 cyclically and reciprocally approaches and moves away from the conveying belt 51 under the driving of the dynamic plate 521, a set of tooth-like structures distributed at equal intervals along the length direction of the dynamic plate 521 move, and these tooth-like structures are inserted into and pulled out of the mud cake layer on the surface of the conveying belt 51 one by one, continuously turning over and crushing the mud cake. At the same time, during the movement of the disturbance piece 52, the scraper 522 cooperates with the tooth edge to remove the residual mud attached thereto, preventing clogging and ensuring the disturbance effect.

[0062] With the continuous reciprocating action of the disturbance piece 52, the mud cake conveyed on the conveying belt 51 is in a state of being constantly loosened and turned over, and the original surface crust or internal dense mud cake structure is broken, forming more interfaces with the curing agent. At this time, the sprayed curing agent can more evenly cover and penetrate into the interior of the mud cake, fully mix with it, promote the mud cake to further dewater, harden and complete the final curing, and create good conditions for subsequent stabilization treatment.

[0063] As shown in Figure 4 , Figure 5 and Figure 9 , the treatment box 21 is provided with a buffer plate 23 for preventing the sludge falling from the material falling port 211 from directly impacting the pressure belt 42 and a baffle 24 for preventing part of the sludge falling into the back of the conveying belt 41.

[0064] When the sludge falls from the drop port 211 into the processing box 21, it first contacts and impacts on the buffer plate 23, which is arranged between the drop port 211 and the pressure belt 42, for reducing the impact force of the falling sludge and preventing it from directly acting on the pressure belt 42 to cause local pressure unevenness or damage the operation stability of the pressure belt 42.

[0065] At the same time, the baffle 24 is used to block the sludge that may deviate from the main falling path, prevent it from mistakenly entering the back of the conveying belt 41, and avoid causing the conveying belt 41 to be hindered in operation. Through the joint action of the buffer plate 23 and the baffle 24, the falling sludge is effectively guided and controlled, and the normal working environment and operation efficiency of the conveying belt 41 and the pressure belt 42 are ensured.

[0066] Referring to Figure 4 , Figure 5 , Figure 9 and Figure 10 , the lower half of the processing box 21 corresponding to the conveying belt 41 and the pressure belt 42 is provided with a water receiving groove 412, and the processing box 21 is further provided with a cleaning nozzle 413 above each water receiving groove 412, which is opposite to the outer side of the conveying belt 41 and the pressure belt 42.

[0067] When the conveying belt 41 and the pressure belt 42 complete the pressure filtration process in the processing box 21 and continue to run synchronously to the lower half, sludge particles or impurities may be left on the outer surface thereof. To prevent the residues from affecting subsequent recycling, the cleaning nozzle 413 opposite to the outer side of the conveying belt 41 and the pressure belt 42 sprays high-pressure water flow to the surface thereof, and the conveying belt 41 and the pressure belt 42 are continuously washed. The sewage after spraying and the impurities washed down fall into the water receiving groove 412 below and are discharged.

[0068] Through the cooperation of the cleaning nozzle 413 and the water receiving groove 412, the online automatic cleaning of the conveying belt 41 and the pressure belt 42 is realized, the cleanliness and stability of the operation are ensured, the service life of the conveying belt 41 and the pressure belt 42 is prolonged, and it is ensured that each pressure filtration operation is in a clean state.

[0069] Referring to Figure 4 , Figure 5 , Figure 9 and Figure 10 , the inside of the conveying belt 51 is provided with a drainage groove 511 mounted on the processing box 21, the drainage groove 511 is provided with a perforated plate 512 for supporting the area of the slurry cake conveyed by the conveying belt 51, and the conveying belt 51 is a water-permeable fabric that allows excess water to penetrate into the drainage groove 511.

[0070] When the conveying belt 51 runs in the treatment box 21 and carries the dewatered mud cake forward, the drainage groove 511 is used to collect the excess water in the mud cake that continues to separate out during the conveying process. The conveying belt 51 is made of a water-permeable fabric, which has good permeability, so that the water remaining in the mud cake can penetrate the conveying belt 51 into the drainage groove 511 below under the action of gravity or subsequent disturbance.

[0071] During the conveying of the mud cake, the orifice plate 512 above the drainage groove 511 supports the area of the mud cake carried by the conveying belt 51, preventing it from collapsing due to the soft nature of the conveying belt 51 itself. This achieves continuous dewatering and stable conveying of the mud cake during the conveying process, improving the overall processing efficiency and discharge quality.

[0072] The present application forms a closed filter-pressing space by the synchronous and co-directional operation of the conveying belt 41 and the pressure-bearing belt 42, and combines the pressure-bearing rollers 44 arranged in an upper-lower staggered manner to apply increasing pressure to the sludge, so that the sludge realizes efficient solid-liquid separation during movement, forms a mud cake with a compact structure and low water content, and improves the dewatering efficiency and molding quality.

[0073] At the same time, through the mechanical linkage structure of the linkage member 6 and the disturbance assembly 5, the power of the conveying belt 41 is converted into the reciprocating motion of the disturbance member 52, which cooperates with the toothed disturbance member 52 and the scraper 522 to uniformly turn and break the mud cake, significantly improving the penetration efficiency and mixing uniformity of the solidifying agent and ensuring the stable treatment of the mud cake.

[0074] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. An environment-friendly sludge treatment device, comprising a sludge suction pump (1) and a dewatering mechanism (2) connected therewith; characterized in that The dewatering mechanism (2) comprises a treatment box (21) and a pipeline (22) connected between the treatment box (21) and the sludge suction pump (1), a rotating screen cylinder (3) for screening out particulate impurities is arranged in the pipeline (22), and a material falling port (211) for the sludge to enter is formed in the top of the treatment box (21); The dewatering mechanism (2) further comprises a filter pressing assembly (4) and a disturbance assembly (5) arranged in the treatment box (21) in sequence from top to bottom, a linkage (6) is arranged between the filter pressing assembly (4) and the disturbance assembly (5), a medicament spraying head (212) for spraying a solidifying agent is arranged on the treatment box (21) and opposite to the disturbance assembly (5), and a discharging channel (213) is arranged on the treatment box (21) and below the disturbance assembly (5); When the filter pressing assembly (4) is started, the disturbance assembly (5) is in a synchronous starting state under the driving of the linkage (6), so that the sludge is mixed with the solidifying agent immediately after being drained; The filter pressing assembly (4) comprises a conveying belt (41) and a pressure bearing belt (42) capable of synchronous and same direction movement, the disturbance assembly (5) comprises a conveying belt (51) capable of conveying the sludge towards the discharging channel (213) and a disturbing member (52) above the conveying belt (51), when the conveying belt (41) is driven, the linkage (6) is in a movement state, so that the disturbing member (52) is in a synchronous movement state under the driving of the linkage (6); A moving plate (521) connected with the disturbing member (52) is slidably arranged on the treatment box (21), and a pressing rod (61) cooperating with the linkage (6) is rotatably arranged on the treatment box (21), one end of the pressing rod (61) abuts against the moving plate (521), a torsional spring (62) is arranged between the pressing rod (61) and the rotation point, a rubber strip (5211) is arranged between the moving plate (521) and the treatment box (21), when the linkage (6) moves to make the pressing rod (61) swing, the moving plate (521) is in a pressed state, so that the disturbing member (52) acts; A first driving roller (411) for driving the conveying belt (41) and a second driving roller (421) for driving the pressure bearing belt (42) are arranged on the treatment box (21), and the linkage (6) is a cam structure mounted on the first driving roller (411), when the cam structure cyclically and reciprocally acts on the pressing rod (61) following the rotation of the first driving roller (411), the moving plate (521) drives the disturbing member (52) to be in a reciprocating movement state towards the conveying belt (51), at this time, the torsional spring (62) and the rubber strip (5211) are deformed and reset constantly; The disturbing member (52) is specifically a set of tooth-like structures distributed equidistantly along the length direction of the moving plate (521), and the processing box (21) is provided with a scraper (522) corresponding to each tooth edge of the disturbing member (52) to cooperate with wall scraping during the movement of the disturbing member (52). When the disturbing member (52) reciprocates to approach and move away from the conveying belt (51), the sludge cake being transported on the conveying belt (51) is in a state of being continuously stirred, so that the sludge cake and the curing agent are fully mixed for final curing.

2. The environment-friendly sludge treatment device according to claim 1, characterized in that, The conveying belt (41) and the pressure belt (42) have a starting point for the sludge to enter and a terminal point for the sludge cake to be discharged. In the working state of the conveying belt (41) and the pressure belt (42), a closed space (43) for pressure filtration of sludge is formed between the conveying belt (41) and the pressure belt (42), so that the sludge enters the lower area in the form of a sludge cake.

3. The environment-friendly sludge treatment device according to claim 2, characterized in that, A plurality of pressure rollers (44) are equidistantly arranged in the processing box (21) in a staggered manner in the horizontal direction, and the conveying belt (41) and the pressure belt (42) pass through the pressure rollers (44) in sequence. The conveying belt (41) has filter holes for water pressure, and the conveying belt (41) is located below the pressure belt (42). In the working state of the conveying belt (41) and the pressure belt (42), the sludge continuously enters the closed space (43) and is in a pressure water discharge state under the action of the pressure roller (44).

4. The environment-friendly sludge treatment device according to claim 2, characterized in that, The processing box (21) is provided with a buffer plate (23) for preventing the sludge falling from the material falling port (211) from directly impacting the pressure belt (42), and a baffle (24) for preventing part of the sludge from entering the back of the conveying belt (41) after falling.

5. The environmentally friendly sludge treatment device according to claim 4, characterized in that, The processing box (21) is provided with a water receiving groove (412) corresponding to the lower half of the conveying belt (41) and the pressure belt (42), and a cleaning nozzle (413) is arranged above each water receiving groove (412) and opposite to the outer side of the conveying belt (41) and the pressure belt (42).

6. The environmentally friendly sludge treatment device according to claim 1, characterized in that, A drainage groove (511) is arranged in the conveying belt (51) and mounted on the processing box (21). The drainage groove (511) is provided with a hole plate (512) for supporting the area of the sludge cake transported by the conveying belt (51), and the conveying belt (51) is a water-permeable fabric that allows excess water to penetrate into the drainage groove (511).

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