A device for dispensing solidifying agent for riverbed sediment

Abstract

This invention provides a device for dispensing a solidifying agent for riverbed sediment, comprising a main mixing tank, a premixing tank, a solidifying agent dosing system, a sediment conveying system, and a control system. The main mixing tank has a main sediment inlet and a premixed slurry inlet at the top, and a discharge outlet at the bottom. It contains a main agitator and a slurry dispersion disc. The premixing tank has a premixed sediment inlet and a solidifying agent inlet, with a discharge outlet at the bottom connected to the premixed slurry inlet. It also contains a high-speed agitator and a solidifying agent spraying disc. The solidifying agent dosing system is connected to the solidifying agent inlet. The sediment conveying system is branched into a main sediment pipe and a premixed sediment pipe via a main conveying pipe, connected to the main sediment inlet and the premixed sediment inlet respectively. The control system controls the operation of the main agitator, the high-speed agitator, the solidifying agent dosing system, and the pumps and flow regulating valves on each pipeline. This solidifying agent dosing device achieves uniform dispersion of the solidifying agent and efficient and uniform mixing with the sediment.

Description

Technical Field

[0001] This utility model belongs to the field of riverbed sediment treatment technology, and in particular relates to a solidifying agent dispensing device for riverbed sediment. Background Technology

[0002] In river and lake dredging projects, solidification / stabilization of the dredged sediment is one of the most commonly used techniques. This technology involves adding a solidifying agent to the sediment, causing a physicochemical reaction that transforms the fluid slurry into a solid filler with a certain strength, facilitating subsequent resource utilization or harmless disposal.

[0003] Currently, common methods for adding curing agents include direct spraying or direct pipeline delivery to mixing equipment. However, because the curing agent is directly introduced into a large amount of high-viscosity sludge, it is prone to clumping or localized enrichment due to the sludge's viscous resistance, making it difficult to disperse quickly and resulting in uneven distribution. Uneven mixing leads to insufficient curing in some areas of the sludge and excessive curing agent in others, affecting the overall strength and uniformity of the cured body and failing to meet engineering requirements. Achieving uniform mixing requires a long stirring time, resulting in low mixing efficiency. Utility Model Content

[0004] In view of this, in order to solve the above-mentioned technical problems, this utility model proposes a solidifying agent dosing device for riverbed sediment that has a reasonable structure, is easy to operate, and can achieve uniform dispersion of the solidifying agent and efficient and uniform mixing with the sediment.

[0005] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0006] A device for dispensing a solidifying agent for riverbed sediment includes:

[0007] The main mixing tank includes a main tank body, a main slurry inlet and a premixed slurry inlet located at the upper end of the main tank body, a discharge outlet located at the bottom of the main tank body, a main agitator and a slurry dispersion disc located in the inner cavity of the main tank body; the slurry dispersion disc receives the premixed slurry fed in by the premixed slurry inlet and evenly disperses the premixed slurry into the inner cavity of the main tank body.

[0008] A premixing tank includes a tank body, a premixing slurry inlet and a curing agent inlet located at the upper end of the tank body, a discharge outlet located at the bottom of the tank body, a high-speed agitator and a curing agent injection disc located in the inner cavity of the tank body; the discharge outlet is connected to the premixing slurry inlet; the curing agent injection disc injects curing agent into the premixing tank body in a multi-jet spray manner;

[0009] A curing agent dosing system, wherein the outlet of the curing agent dosing system is connected to the curing agent inlet;

[0010] A bottom sediment conveying system, comprising a main conveying pipe, a main sediment pipe connected to the main conveying pipe, and a premixed sediment pipe, wherein the main sediment pipe is connected to the main sediment inlet, and the premixed sediment pipe is connected to the premixed sediment inlet.

[0011] The control system controls the operation of the main mixer, the high-speed mixer, the curing agent dosing system, the slurry pump and slurry flow regulating valve located on the pipeline connecting the discharge port and the premixed slurry inlet, the mud pump and mud flow regulating valve located on the main mud pipe and the premixed mud pipe, and the discharge pump and discharge regulating valve located on the discharge pipeline connected to the discharge port.

[0012] The curing agent is fed into the premixing tank by the curing agent injection system and is evenly dispersed and sprayed into the premixing tank by the curing agent spraying disc. At the same time, a portion of the bottom mud (5%-15% of the total amount) is fed into the premixing tank through the premixed mud pipe. Under the action of the high-speed agitator, the curing agent and part of the bottom mud are forcibly mixed. Compared with the total amount of bottom mud, the amount of bottom mud used for premixing is small and is easier to mix with the curing agent. With the uniform spraying of the curing agent spraying disc and the stirring of the high-speed agitator, a uniformly mixed premixed slurry can be quickly formed. The premixed slurry enters the main mixing tank through the discharge port and the premixed slurry inlet and is evenly dispersed into the main mixing tank by the slurry dispersion disc. At the same time, most of the remaining bottom mud is fed into the main mixing tank through the main mud pipe. Under the action of the main agitator, the premixed slurry is carried into and diffused into the entire mixing system.

[0013] Furthermore, the main slurry inlet is located at the upper end of the side wall of the main tank, the premixed slurry inlet is located at the top of the main tank, and the slurry dispersion disc is located at the upper end of the inner cavity of the main tank and above the main slurry inlet; a support ring is provided on the inner side wall of the main tank, and the edge of the slurry dispersion disc is supported on the support ring; the slurry dispersion disc is a disc-shaped structure with an open top, and its bottom is provided with multiple slurry dispersion ports communicating with its inner cavity, and the stirring shaft of the main agitator passes through the slurry dispersion port located at the center.

[0014] Furthermore, the main agitator includes an agitator shaft connected to the drive device at the top of the main tank, an agitator blade mounted on the agitator shaft, and an agitator scraper blade connected to the bottom of the agitator shaft. There are multiple agitator blades arranged along the length of the agitator shaft. The blades of the agitator blades are inclined, and the blades of adjacent agitator blades are inclined in opposite directions to prevent the generation of eddies and optimize the mud collision and mixing effect. The agitator scraper blade has a U-shaped structure and is equipped with a soft scraper blade that contacts the inner wall of the main tank for scraping the mud on the inner wall without affecting the agitation.

[0015] Furthermore, the premixed sludge inlet is located at the upper end of the side wall of the premixed tank, the curing agent inlet is located at the top of the premixed tank, and the curing agent spraying disc is located at the upper end of the inner cavity of the premixed tank and above the premixed sludge inlet; a support frame is provided on the inner side wall of the premixed tank, and the curing agent spraying disc is supported on the support frame; the curing agent spraying disc includes multiple concentrically arranged annular tubes, a connecting pipe connecting each of the annular tubes, a connecting rod connecting each of the annular tubes, multiple spray heads provided on the annular tubes, and a conveying pipe connected to the annular tubes, the conveying pipe being connected to the curing agent inlet.

[0016] Furthermore, the high-speed mixer is a horizontal high-speed mixer.

[0017] Furthermore, the curing agent dosing system includes a curing agent tank and a curing agent delivery pipeline connected to the outlet end of the curing agent tank; the outlet end of the curing agent delivery pipeline is connected to the curing agent inlet; the curing agent delivery pipeline is equipped with a curing agent pump and a curing agent flow regulating valve controlled by the control system.

[0018] Compared with existing technologies, the solidifying agent dosing device for riverbed sediment described in this utility model has the following advantages:

[0019] (1) The solidifying agent dosing device for riverbed sediment described in this utility model uses a small-capacity premixing tank to premix a small portion (e.g., 5%-15% of the total amount) of the solidifying agent with the sediment. Since the amount of premixing is small compared to the total amount of sediment, the solidifying agent can be quickly and evenly mixed with a small portion of sediment under the uniform spraying action of the high-speed agitator and the solidifying agent spraying plate to form a premixed slurry, thus solving the problem of solidifying agent accumulation and difficulty in dispersion. The premixed slurry is then evenly dispersed into the main mixing tank through the slurry dispersion plate, and under the action of the main agitator, it is evenly mixed with the remaining sediment.

[0020] (2) The solidifying agent dosing device for riverbed sediment described in this utility model adopts a premix + main mixing mode, which avoids the problem of long stirring time required when directly mixing, significantly reduces the processing time, and effectively improves the mixing efficiency. Attached Figure Description

[0021] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the solidifying agent dispensing device for riverbed sediment described in an embodiment of the present invention;

[0023] Figure 2This is a schematic diagram of the slurry dispersion disc described in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the curing agent spraying disc described in an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1-Main mixing tank, 11-Main tank body, 12-Main mud inlet, 13-Premixed slurry inlet, 14-Discharge outlet, 15-Main agitator, 151-Agitator shaft, 152-Agitator blade, 153-Agitator wall scraper blade, 154-Soft scraper, 16-Slurry dispersion disc, 17-Support ring, 18-Slurry dispersion port;

[0027] 2-Premix tank, 21-Premix tank body, 22-Premix mud inlet, 23-Cure agent inlet, 24-Discharge port, 25-High-speed mixer, 26-Cure agent spraying disc, 261-Annular pipe, 262-Connecting pipe, 263-Connecting rod, 264-Spraying head, 265-Conveying pipe, 27-Support frame;

[0028] 3-Curing agent dosing system, 31-Curing agent tank, 32-Curing agent delivery pipeline;

[0029] 4-Sediment conveying system, 41-Main conveying pipe, 42-Main mud pipe, 43-Premixed mud pipe;

[0030] 51-Curing agent pump, 52-Curing agent flow regulating valve;

[0031] 61-Slurry pump, 62-Slurry flow regulating valve;

[0032] 71-Mud pump, 72-Mud flow regulating valve;

[0033] 81 - Discharge pump, 82 - Discharge regulating valve. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] like Figures 1 to 3 As shown, a solidifying agent dosing device for riverbed sediment includes a main mixing tank 1, a premixing tank 2, a solidifying agent dosing system 3, a sediment conveying system 4, and a control system.

[0039] The main mixing tank 1 includes a main tank body 11, a main slurry inlet 12 located on the upper side wall of the main tank body 11, a premixed slurry inlet 13 located at the top of the main tank body 11, a discharge outlet 14 located at the bottom of the main tank body 11, a main agitator 15 located in the inner cavity of the main tank body 11, and a slurry dispersion disc 16 located at the upper end of the inner cavity of the main tank body 11 and above the main slurry inlet 12; a support ring 17 is provided on the inner side wall of the main tank body 11, and the edge of the slurry dispersion disc 16 is supported on the support ring 17; the slurry dispersion disc 16 is a disc-shaped structure with an open top, and its bottom is provided with multiple slurry dispersion ports 18 communicating with its inner cavity, and the agitator shaft 151 of the main agitator 15 passes through the slurry dispersion port 18 located at the center. 8; The slurry dispersion plate 16 receives the premixed slurry fed into the premixed slurry inlet 13 and evenly disperses the premixed slurry into the inner cavity of the main tank 11; The main agitator 15 includes an agitator shaft 151 connected to the drive device at the top of the main tank 11, an agitator blade 152 provided on the agitator shaft 151, and an agitator scraper blade 153 connected to the bottom of the agitator shaft 151; There are multiple agitator blades 152, which are arranged along the length of the agitator shaft 151, and the blades of the agitator blades 152 are inclined, with the blades of adjacent agitator blades 152 inclined in opposite directions; The agitator scraper blade 153 has a U-shaped structure and is provided with a soft scraper blade 154 that contacts the inner wall of the main tank 11 for scraping the inner wall slurry without affecting the agitation;

[0040] The premixing tank 2 includes a premixing tank body 21, a premixing slurry inlet 22 located on the upper side wall of the premixing tank body 21, a curing agent inlet 23 located at the top of the premixing tank body 21, a discharge port 24 located at the bottom of the premixing tank body 21, a high-speed agitator 25 located inside the premixing tank body 21, and a curing agent spraying disc 26 located at the upper end of the inner cavity of the premixing tank body 21 and above the premixing slurry inlet 22; the discharge port 24 is connected to the premixing slurry inlet 13; a support frame 27 is provided on the inner side wall of the premixing tank body 21, and the curing agent spraying disc 26... 6 is supported on the support frame 27; the curing agent spraying disc 26 includes multiple concentrically arranged annular pipes 261, a connecting pipe 262 connecting each annular pipe 261, a connecting rod 263 connecting each annular pipe 261, multiple spraying heads 264 provided on the annular pipes 261, and a conveying pipe 265 connected to the annular pipes 261, the conveying pipe 265 being connected to the curing agent inlet 23; the curing agent spraying disc 26 injects the curing agent into the premixing tank 21 in a multi-stream spray manner; the high-speed agitator 25 is a horizontal high-speed agitator;

[0041] The curing agent dosing system 3 includes a curing agent tank 31 and a curing agent delivery pipe 32 connected to the outlet end of the curing agent tank 31; the outlet end of the curing agent delivery pipe 32 is connected to the curing agent inlet 23.

[0042] The bottom mud conveying system 4 includes a main conveying pipe 41, a main mud pipe 42 connected to the main conveying pipe 41, and a premixed mud pipe 43. The main mud pipe 42 is connected to the main mud inlet 12, and the premixed mud pipe 43 is connected to the premixed mud inlet 22.

[0043] The control system controls the operation of the main mixer 15, the high-speed mixer 25, the curing agent pump 51 and the curing agent flow regulating valve 52 located on the curing agent conveying pipeline 32, the slurry pump 61 and the slurry flow regulating valve 62 located on the pipeline connecting the discharge port 24 and the premixed slurry inlet 13, the mud pump 71 and the mud flow regulating valve 72 located on the main mud pipe 42 and the premixed mud pipe 43, and the discharge pump 81 and the discharge regulating valve 82 located on the discharge pipeline connected to the discharge port 14.

[0044] The working process of the solidifying agent dosing device for riverbed sediment described in this utility model is as follows:

[0045] The control system controls the riverbed sediment to enter the main mixing tank 1 and the premixing tank 2 through the main sediment pipe 42 and the premixing sediment pipe 43 respectively, and simultaneously controls the main agitator 15 and the high-speed agitator 25 to start; the control system controls the curing agent dosing system 3 to send curing agent into the premixing tank 2, and the curing agent is evenly dispersed and sprayed into the premixing tank 2 through the curing agent spraying plate 26. Under the action of the high-speed agitator 25, it is forcibly mixed with the sediment to obtain premixed slurry; the control system controls the premixed slurry to enter the main mixing tank 1, and it is evenly dispersed through the slurry dispersion plate 16. Under the action of the main agitator 15, it is evenly mixed with the sediment in the main mixing tank 1; after even mixing, the control system controls the finished slurry to be discharged through the discharge port 14 and the discharge pipe.

[0046] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for dispensing a solidifying agent for riverbed sediment, characterized in that, include: The main mixing tank includes a main tank body, a main slurry inlet and a premixed slurry inlet located at the upper end of the main tank body, a discharge outlet located at the bottom of the main tank body, a main agitator and a slurry dispersion disc located in the inner cavity of the main tank body; the slurry dispersion disc receives the premixed slurry fed in by the premixed slurry inlet and evenly disperses the premixed slurry into the inner cavity of the main tank body. A premixing tank includes a tank body, a premixing slurry inlet and a curing agent inlet located at the upper end of the tank body, a discharge outlet located at the bottom of the tank body, a high-speed agitator and a curing agent injection disc located in the inner cavity of the tank body; the discharge outlet is connected to the premixing slurry inlet; the curing agent injection disc injects curing agent into the premixing tank body in a multi-jet spray manner; A curing agent dosing system, wherein the outlet of the curing agent dosing system is connected to the curing agent inlet; A bottom sediment conveying system, comprising a main conveying pipe, a main sediment pipe connected to the main conveying pipe, and a premixed sediment pipe, wherein the main sediment pipe is connected to the main sediment inlet, and the premixed sediment pipe is connected to the premixed sediment inlet. The control system controls the operation of the main mixer, the high-speed mixer, the curing agent dosing system, the slurry pump and slurry flow regulating valve located on the pipeline connecting the discharge port and the premixed slurry inlet, the mud pump and mud flow regulating valve located on the main mud pipe and the premixed mud pipe, and the discharge pump and discharge regulating valve located on the discharge pipeline connected to the discharge port.

2. The river channel sediment solidifying agent delivery device according to claim 1, characterized by: The main slurry inlet is located on the upper end of the side wall of the main tank, the premixed slurry inlet is located at the top of the main tank, and the slurry dispersion disc is located at the upper end of the inner cavity of the main tank and above the main slurry inlet; a support ring is provided on the inner side wall of the main tank, and the edge of the slurry dispersion disc is supported on the support ring; the slurry dispersion disc is a disc-shaped structure with an open top, and its bottom is provided with multiple slurry dispersion ports communicating with its inner cavity, and the stirring shaft of the main agitator passes through the slurry dispersion port located at the center.

3. The river channel sediment solidifying agent delivery device according to claim 1, characterized by: The main agitator includes an agitator shaft connected to the drive device at the top of the main tank, an agitator blade on the agitator shaft, and an agitator scraper blade connected to the bottom of the agitator shaft. There are multiple agitator blades arranged along the length of the agitator shaft. The blades of the agitator blades are inclined, and the blades of adjacent agitator blades are inclined in opposite directions. The agitator scraper blade has a U-shaped structure and is provided with a soft scraper blade that contacts the inner wall of the main tank.

4. The river channel sediment solidifying agent delivery device according to claim 1, characterized by: The premixed sludge inlet is located at the upper end of the side wall of the premixed tank, the curing agent inlet is located at the top of the premixed tank, and the curing agent spraying disc is located at the upper end of the inner cavity of the premixed tank and above the premixed sludge inlet; a support frame is provided on the inner side wall of the premixed tank, and the curing agent spraying disc is supported on the support frame; the curing agent spraying disc includes multiple concentrically arranged annular tubes, a connecting pipe connecting each of the annular tubes, a connecting rod connecting each of the annular tubes, multiple spray heads provided on the annular tubes, and a conveying pipe connected to the annular tubes, the conveying pipe being connected to the curing agent inlet.

5. The river sediment solidifying agent delivery device according to claim 1, characterized by: The high-speed mixer is a horizontal high-speed mixer.

6. The device for dispensing solidifying agent for riverbed sediment according to claim 1, characterized in that: The curing agent dosing system includes a curing agent tank and a curing agent delivery pipeline connected to the outlet end of the curing agent tank; the outlet end of the curing agent delivery pipeline is connected to the curing agent inlet; the curing agent delivery pipeline is equipped with a curing agent pump and a curing agent flow regulating valve controlled by the control system.

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