CN-121726132-B - Integrated sludge treatment device

CN121726132BCN 121726132 BCN121726132 BCN 121726132BCN-121726132-B

Abstract

The invention discloses an integrated sludge treatment device, which relates to the technical field of sludge treatment and comprises a mixing box for mixing sludge and cement to form a sludge mixed material, a stirring barrel for mixing cement and water to form a cement mixed material, an extrusion head and a waste barrel, wherein a first material channel for extruding the sludge mixed material and a second material channel for extruding the cement mixed material are arranged in the extrusion head, the extrusion head is used for extruding a solidified body in the waste barrel, the solidified body comprises an inner core of the sludge mixed material and a cement mixed material shell wrapped outside the inner core, the integrated sludge treatment device is used for treating sludge containing radioactive substances to obtain the sludge mixed material, the extrusion head forms the cement mixed material shell outside the sludge mixed material in a segmented extrusion mode, the forming efficiency of the solidified body is improved, the solidification system of the cement mixed material forming shell is more stable, the sludge can be further isolated, and the nuclide leaching and migration risks are reduced.

Inventors

LIU FUZHEN
GAO XIANG
FAN HONGBO
ZHANG YAFEI
Zheng Wanlan

Assignees

核工业二三0研究所

Dates

Publication Date: 20260512
Application Date: 20260212

Claims (7)

1. The integrated sludge treatment device comprises a mixing box for mixing sludge and cement to form a sludge mixed material, and is characterized by further comprising a stirring barrel for mixing cement and water to form the cement mixed material, a first extrusion barrel for extruding the sludge mixed material, a second extrusion barrel for extruding the cement mixed material, an extrusion head and a waste barrel, wherein an isolation mould is arranged in the extrusion head, a columnar first material channel and an annular second material channel are formed in the extrusion head by the isolation mould, the first material channel is used for circulating the sludge mixed material, the second material channel is used for circulating the cement mixed material, the first material channel is positioned in the second material channel, and a cylindrical retention space is arranged at a discharge port of the extrusion head and is respectively communicated with discharge ends of the first material channel and the second material channel; The extrusion head is used for extruding a solidified body in the waste barrel, the solidified body comprises a columnar inner core and a shell wrapped outside the inner core, the inner core is a sludge mixed material, the shell is a cement mixed material, the shell comprises a first end panel, a cylindrical side plate and a second end panel, and the first end panel is formed in a detention space; The sealing plate is in sliding connection with the extrusion head in the horizontal direction and is used for sealing a discharge hole of the extrusion head to form a cavity in the retention space, and the cavity is used for extrusion to form a first end panel; The cutting knife is used for cutting the cement mixed material to separate a first end panel in the retention space from a second end panel in the waste bin; the device comprises a conveying belt, wherein a plurality of conveying tables are arranged on the conveying belt, the conveying tables are uniformly distributed on a conveying path of the conveying belt, and a limiting cylinder for placing a waste barrel is arranged on the conveying table; The utility model discloses a waste bin, including the conveyer belt, the conveyer belt is provided with the upper conveying surface below, is provided with the first functional jar that is used for promoting the waste bin and goes up and down, first functional jar is located the below of extruding the head, first functional jar is used for driving the waste bin and removes the realization the waste bin with extrude the intercommunication and the separation of head discharge gate.
2. The integrated sludge treatment device according to claim 1, wherein the axis of the first functional cylinder is arranged vertically, a clamp is fixedly connected to the upper portion of the first functional cylinder, a clamping portion is connected to the bottom of the waste bucket, and the clamp is used for clamping the clamping portion.
3. The integrated sludge treatment device according to claim 2, wherein a plurality of through holes are provided on the conveyor belt, the through holes being communicated with the limiting cylinder, the through holes corresponding to the conveyor table.
4. The integrated sludge treatment device of claim 3, wherein the first extrusion cylinder is provided with a power cut-off structure of the screw conveying rod, a discharge end of the first extrusion cylinder is communicated with the first material passage of the extrusion head, and the power cut-off structure is used for realizing intermittent discharge of the first material passage.
5. The integrated sludge treatment device according to claim 4, wherein the power cut-off structure comprises a first combination plate and a second combination plate which are oppositely arranged, the first combination plate is fixedly connected to the extending end of the spiral conveying rod, the second combination plate is sleeved on the rotating rod in a sliding manner, and the second combination plate is in contact with and separated from the first combination plate through sliding.
6. The integrated sludge treatment device according to claim 5, further comprising a fourth functional cylinder, wherein an axis of the fourth functional cylinder is parallel to an axis of the rotary rod, one side of the second coupling plate is coaxially and rotatably connected with the annular plate, and the fourth functional cylinder is connected to the second coupling plate through the annular plate.
7. The integrated sludge treatment device of any one of claims 1-6 further comprising a housing, wherein the extrusion head and conveyor belt are located inside the housing.

Description

Integrated sludge treatment device Technical Field The invention relates to the technical field of sludge treatment, in particular to an integrated sludge treatment device. Background In the field of nuclear research, sludge containing radionuclides will be produced. The main flow treatment mode of the sludge at present is that after dehydration and volume reduction are carried out on the sludge, the sludge is mixed with curing agents such as cement and the like to form uniform slurry, and then the uniform slurry is directly filled into a standard waste bucket, and near-surface landfill treatment is carried out after curing and hardening. In the above treatment process, conventional waste drums (mostly made of carbon steel) are susceptible to groundwater attack, chemical corrosion and stress in a long-term treatment environment, and corrosion perforation may occur, resulting in deterioration of physical containment capacity thereof with time. Meanwhile, the sludge-cement mixed curing system has complex components, and organic matters, salts and various ions in the sludge interfere with normal hydration of cement and possibly react with the normal hydration, so that the microstructure inside the curing body is loose and easy to crack, nuclides can still be gradually leached out through pores or microcracks inside the curing body, and the fixing effect of the sludge-cement mixed curing body on radionuclides is limited. Once the barrier function of the inner solidified body and the outer waste basket is successively disabled, the radioactive material is at risk of migrating to the surrounding geological environment. Disclosure of Invention The invention provides an integrated sludge treatment device, which is used for solving the problem that the combined barrier of a sludge-cement solidified body and an external waste bucket has limited radionuclide fixation effect in the prior art, and the cement shell is added outside the sludge-cement mixed solidified body, so that the risk of migration of radioactive substances in the sludge-cement mixed solidified body to the surrounding geological environment is reduced. In order to achieve the above purpose, the present invention adopts the following technical scheme: The utility model provides an integration sludge treatment device, including the blending box that is used for mixing mud and cement to form mud mixture, be used for mixing cement and water to form cement mixture's agitator, be used for extruding the first extrusion section of thick bamboo of mud mixture, be used for extruding the second extrusion section of thick bamboo of cement mixture, extrude head and waste drum, it is provided with the isolation mould to extrude the head inside, it forms columnar first material passageway and annular second material passageway to keep apart the mould at extrusion head inside, first material passageway is used for the circulation of mud mixture, second material passageway is used for the circulation of cement mixture, first material passageway is located the inside of second material passageway, the discharge gate of extruding the head is provided with cylindric detention space, detention space communicates the discharge end of first material passageway and second material passageway respectively. The extrusion head is used for extruding a solidified body inside the waste barrel, the solidified body comprises a columnar inner core and a shell wrapped outside the inner core, the inner core is a sludge mixed material, the shell is a cement mixed material, the shell comprises a first end panel, a cylindrical side plate and a second end panel, and the first end panel is formed inside a detention space. Preferably, the integrated sludge treatment device further comprises a sealing plate, the sealing plate is in sliding connection with the extrusion head in the horizontal direction, the sealing plate is used for sealing a discharge hole of the extrusion head so as to form a cavity in the retention space, and the cavity is used for extrusion to form the first end panel. Preferably, the integrated sludge treatment device further comprises a cutting knife, the cutting knife is in sliding connection with the extrusion head in the horizontal direction, and the cutting knife is used for cutting off the cement mixture to separate a first end panel in the retention space from a second end panel in the waste barrel. Preferably, the integrated sludge treatment device further comprises a conveyor belt, a plurality of conveying tables are arranged on the conveyor belt, the conveying tables are uniformly distributed on a conveying path of the conveyor belt, and a limiting cylinder for placing the waste material barrel is arranged on the conveying tables. The upper conveying surface of the conveying belt is provided with a first functional cylinder for pushing the waste material barrel to lift, the first functional cylinder is located below the extrusion head, and the first functional c