A dredged sludge solidification device and method for soil resource utilization

Abstract

The present invention relates to the technical field of sludge treatment, and in particular to a dredged sludge solidification device and method for soil resource utilization, including a solidification cylinder, an electric roller, and an auger, etc.; the solidification cylinder is rotatably connected to an electric roller; the electric roller is fixedly connected to two augers. Through the integrated design, when a small amount of sludge needs to be solidified, the solidification operation can be directly performed in the sludge area, thereby avoiding the need to transport it to a sludge treatment plant, which leads to the problem of high solidification costs; and the sludge is squeezed by a sliding plate and a rotating plate, thereby reducing the amount of sewage in the sludge, thereby reducing the amount of curing agent used and reducing the curing cost; the extrusion tube is inserted into the sludge, so that the curing agent is directly discharged into the sludge, thereby facilitating the mixing of the curing agent and the sludge, and the subsequent curing agent will continue to be discharged into the upper part of the sludge, thereby further accelerating the mixing speed of the sludge and the curing agent.

Description

Technical Field

[0001] The invention relates to the technical field of sludge treatment, and in particular to a dredged sludge solidification device and method for soil resource utilization. Background Art

[0002] Silt may contain a variety of harmful substances, such as heavy metals, organic pollutants and other toxic chemicals, which pose a serious threat to the environment and human health. In order to improve the physical and chemical properties of silt, reduce its volume, increase stability, and reduce the risk of environmental pollution, it is usually necessary to solidify it.

[0003] At present, when dealing with sludge solidification, the conventional practice is to extract the sludge and transport it to a special treatment plant for solidification. Although this treatment method is suitable for large amounts of sludge, the cost is relatively high. For a small amount of sludge, it is usually achieved by directly adding a solidifying agent on site and using an excavator to stir it. Although this method can reduce costs, the solidification effect is poor due to uneven mixing. At the same time, due to the high moisture content in the sludge, more solidifying agent is often required to achieve the desired effect, which makes it difficult to effectively control the overall cost. Summary of the invention

[0004] In order to overcome the shortcomings of the existing sludge solidification technology, such as poor effect and difficulty in cost control due to uneven mixing and the need to add a large amount of additional solidifying agent, the present invention provides a dredged sludge solidification device and method for soil resource utilization.

[0005] The technical scheme of the present invention is: a dredged sludge solidification device for soil resource utilization, comprising a solidification cylinder; also comprising an electric roller, an auger, an electric control valve, a multi-stage electric push rod, a sliding plate, a rotating plate, a non-woven fabric, an annular frame, a drain pipe and a feeding assembly; the solidification cylinder is rotatably connected to the electric roller; the electric roller is fixedly connected to two augers; the solidification cylinder is respectively provided with two spaces of a feeding part and a mixing part; the solidification cylinder is provided with at least six feeding ports; the feeding part and the mixing part are connected through the feeding ports; each feeding port is provided with a An electric control valve; the curing cylinder is fixedly connected to at least three multi-stage electric push rods; the telescopic parts of all the multi-stage electric push rods are commonly fixedly connected to a sliding plate; the sliding plate is rotatably connected to a rotating plate; the rotating plate is slidably connected to the auger; the curing cylinder is provided with at least six water outlet grooves; each water outlet groove is fixedly connected to a non-woven fabric; the curing cylinder is fixedly connected to an annular frame; the water outlet groove is surrounded by the annular frame; the sliding plate is connected to a feeding assembly for conveying a curing agent; the annular frame is connected to a drain pipe; the electric control valve and the multi-stage electric push rod are respectively connected to an external power supply.

[0006] Furthermore, the mixing section has a larger space than the feeding section.

[0007] Furthermore, the feed assembly includes a feed pipe, an extrusion tube, a pneumatic push rod and a hole-blocking rod; the sliding plate is provided with at least three feed holes; the sliding plate is connected with the feed pipe, and the feed pipe is connected with all the feed holes; the feed pipe runs through the curing cylinder, and the feed pipe is a hose; each feed hole of the sliding plate is connected with an extrusion tube, and an opening is provided at the lower end of the extrusion tube; the sliding plate is fixedly connected with at least three pneumatic push rods; each telescopic part of the pneumatic push rod is fixedly connected with a hole-blocking rod; each hole-blocking rod is located in the corresponding extrusion tube.

[0008] Furthermore, the hole-blocking rod is composed of a thin rod and a blocking block, and the diameter of the thin rod is smaller than the inner diameter of the extruded tube, while the blocking block fits with the lower end opening of the extruded tube.

[0009] Furthermore, the connection between the thin rod of the hole-blocking rod and the blocking block is inclined.

[0010] Furthermore, it also includes an annular frame and a push plate; the lower part of the upper auger is fixedly connected with the annular frame; the annular frame is fixedly connected with at least three push plates; the push plates are inclined.

[0011] Furthermore, it also includes an electromagnetic control valve and a mud discharge pipe; the sliding plate is provided with at least three mud outlets; an electromagnetic control valve is installed at each mud outlet; the sliding plate is connected with the mud discharge pipe; the mud discharge pipe is connected with all the mud outlets, the mud discharge pipe runs through the curing cylinder, and the mud discharge pipe is a hose, the sliding plate is provided with a limiting part, and the upper end of the auger is in contact with the limiting part.

[0012] Furthermore, the lower side of the sliding plate is in a state where the outer side is low and the middle is high.

[0013] Further, the push plate contacts the nonwoven fabric.

[0014] Furthermore, a dredged sludge solidification method for soil resource utilization comprises the following specific steps:

[0015] Step 1: Push the sludge into the mixing part through the auger below, and then the sliding plate and the rotating plate descend to squeeze the sludge, thereby squeezing out part of the water in the sludge to facilitate mixing with the curing agent;

[0016] Step 2: The feed pipe is lowered together with the sliding plate to feed the curing agent into the sludge in a compressed state, so that the sludge can be mixed with the curing agent faster, thereby accelerating the mixing speed;

[0017] Step 3: The push plate is driven to rotate by the lower part of the upper auger, thereby pushing the sludge in the dead corner area of ​​the mixing part to avoid sludge residue;

[0018] Step 4: When solidifying sludge with low water content, the mixed sludge on the upper part can be discharged first through the sludge discharge pipe to speed up the solidification work.

[0019] Beneficial effects: Through the integrated design, when a small amount of sludge needs to be solidified, the solidification operation can be carried out directly in the sludge area, thereby avoiding the need to transport it to the sludge treatment plant, which leads to high solidification costs; and it can avoid direct mixing by an excavator, which leads to uneven mixing and poor solidification effect. Before mixing, the sludge can be squeezed by the sliding plate and the rotating plate to reduce the content of sewage in the sludge, thereby reducing the amount of curing agent used, reducing the solidification cost, and facilitating the solidification work.

[0020] By inserting the extrusion tube into the sludge, the curing agent is directly discharged into the sludge, which makes it easier to mix the curing agent with the sludge. The subsequent curing agent will continue to be discharged into the upper part of the sludge, thereby further accelerating the mixing speed of the sludge and the curing agent.

[0021] By lowering the sliding plate, the upper sludge is discharged from the sludge discharge pipe, so there is no need to wait for the lower sludge to be mixed before discharging all the sludge, thereby speeding up the overall working speed of the sludge solidification work. Moreover, since the water content of the sludge fed in is small, it will not affect the sludge remaining in the mixing part, thus avoiding the problem that the moisture in the newly fed sludge is absorbed by the residual sludge, resulting in an increase in the use of the solidifying agent.

[0022] The upper auger is controlled to drive the push plate to rotate clockwise at a top-down angle, so that the push plate pushes away the sludge in the dead corner of the mixing part to avoid residue. Since the push plate is in contact with the non-woven fabric, the sludge attached to the non-woven fabric is scraped off when the push plate rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the dredged sludge solidification device for soil resource utilization of the present invention;

[0024] Figure 2 It is a structural cross-sectional view of a solidification cylinder of a dredged sludge solidification device for soil resource utilization of the present invention;

[0025] Figure 3 It is a schematic diagram of the structure of the electric roller, auger, electric control valve, non-woven fabric, annular frame and drainage pipe of the dredged sludge solidification device for soil resource utilization of the present invention;

[0026] Figure 4 It is a structural cross-sectional view of a solidifying cylinder, a sliding plate and a rotating plate of a dredged sludge solidifying device for soil resource utilization of the present invention;

[0027] Figure 5 It is a structural schematic diagram of a sliding plate and an electromagnetic control valve of a dredged sludge solidification device for soil resource utilization of the present invention;

[0028] Figure 6 for Figure 4 Enlarged view of point A.

[0029] Names of the numbers in the figure: 1-curing cylinder, 2-electric roller, 3-auger, 4-electrically controlled valve, 5-multi-stage electric push rod, 6-sliding plate, 7-rotating plate, 8-non-woven fabric, 9-annular frame, 10-drain pipe, 101-electromagnetic control valve, 102-mud discharge pipe, 201-feed pipe, 202-extrusion pipe, 203-pneumatic push rod, 204-hole plugging rod, 211-annular frame, 212-push plate, 1001-feeding part, 1002-mixing part, 1003-feeding port, 1004-water outlet trough, 6001-mud outlet, 6002-limiting part, 6003-feeding hole. DETAILED DESCRIPTION

[0030] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to the scope of the present application. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0031] Example 1

[0032] A dredged sludge solidification device for soil resource utilization, such as Figure 1-Figure 6 As shown, it includes a curing cylinder 1;

[0033] It also includes an electric roller 2, an auger 3, an electric control valve 4, a multi-stage electric push rod 5, a sliding plate 6, a rotating plate 7, a non-woven fabric 8, a ring frame 9, a drain pipe 10 and a feeding assembly; the curing cylinder 1 is rotatably connected to the electric roller 2, and the electric roller 2 is driven to rotate by the motor; the electric roller 2 is fixedly connected to two auger 3 distributed up and down; the curing cylinder 1 is respectively provided with two spaces, a feeding part 1001 and a mixing part 1002; the curing cylinder 1 is provided with six feeding ports 1003; the feeding part 1001 and the mixing part 1002 are connected through the feeding ports 1003; each feeding port 1003 is provided with a An electric control valve 4 is installed; three multi-stage electric push rods 5 are fixedly connected to the curing cylinder 1; the telescopic parts of all the multi-stage electric push rods 5 are commonly fixedly connected to a sliding plate 6; the sliding plate 6 is rotatably connected to a rotating plate 7; the rotating plate 7 is slidably connected to the upper auger 3; the curing cylinder 1 is provided with six water outlet grooves 1004; each water outlet groove 1004 is fixedly connected to a non-woven fabric 8; the curing cylinder 1 is fixedly connected to an annular frame 9; the water outlet groove 1004 is surrounded by the annular frame 9; the sliding plate 6 is connected to a feed assembly; the annular frame 9 is connected to a drain pipe 10; the electric control valve 4 and the multi-stage electric push rods 5 are respectively connected to an external power supply.

[0034] The space of the mixing section 1002 is larger than that of the feeding section 1001 , so that the sludge and the curing agent in the space of the mixing section 1002 can be easily mixed.

[0035] The feeding assembly includes a feeding pipe 201, an extrusion tube 202, a pneumatic push rod 203 and a hole-blocking rod 204; the sliding plate 6 is provided with three feeding holes 6003; the sliding plate 6 is connected with the feeding pipe 201, and the feeding pipe 201 is connected with all the feeding holes 6003; the feeding pipe 201 passes through the curing tube 1, and the feeding pipe 201 is a hose, so that the feeding pipe 201 can move up and down in the curing tube 1 conveniently; each feeding hole 6003 of the sliding plate 6 is connected with an extrusion tube 202, and an opening is set at the lower end of the extrusion tube 202 to communicate with the mixing part 1002; the sliding plate 6 is fixed with three pneumatic push rods 203; each telescopic part of the pneumatic push rod 203 is fixed with a hole-blocking rod 204; each hole-blocking rod 204 is located in the corresponding extrusion tube 202.

[0036] The hole-plugging rod 204 is composed of a thin rod and a blocking block, and the diameter of the thin rod is smaller than the inner diameter of the extruded tube 202, and the blocking block fits with the lower opening of the extruded tube 202, so that a gap is left between the hole-plugging rod 204 and the inner wall of the extruded tube 202, thereby increasing the amount of curing agent entering the extruded tube 202, thereby increasing the amount of curing agent discharged.

[0037] The connection between the thin rod of the hole plugging rod 204 and the plugging block is inclined, which is convenient for guiding the curing agent to be discharged.

[0038] The specific working steps are:

[0039] The external water pump is connected to the drainage pipe 10. The external water pump is located in a non-silt area to prevent the discharged water from flowing back to the silt area and then re-entering the solidification cylinder 1. The movable arm of the excavator is connected to the upper part of the solidification cylinder 1; the external feeding equipment is connected to the feed pipe 201.

[0040] When the sludge needs to be solidified, the excavator drives the solidification cylinder 1 to move above the sludge, and then drives the solidification cylinder 1 to descend and insert into the sludge. At this time, the sludge will enter the feeding part 1001. When the solidification cylinder 1 descends, the electric roller 2 will drive the upper and lower augers 3 to rotate clockwise from a top-down perspective, so that the lower augers 3 push the sludge in the feeding part 1001 through the feeding port 1003 into the mixing part 1002 of the solidification cylinder 1. When the sludge in the inserted area is pushed into the solidification cylinder 1, the excavator is controlled to drive the solidification cylinder 1 to move to the remaining areas, thereby The sludge on the remaining area is pushed into the mixing part 1002 of the curing cylinder 1. When the mixing part 1002 is full of sludge, the electric control valve 4 is first changed from the open state to the closed state, and then the multi-stage electric push rod 5 pushes the sliding plate 6 and the rotating plate 7 to descend and squeeze the sludge. The rotating plate 7 is slidably connected with the auger 3, so that the rotating plate 7 rotates along the auger 3 when descending. Since the sludge cannot be discharged from the feed port 1003, the sewage in the sludge is squeezed and discharged by the sliding plate 6 and the rotating plate 7, and the discharged sewage will be discharged into the annular frame 9 through the non-woven fabric 8. At the same time, the external water pump will be turned on to enter The discharged sewage is sucked away, and the sewage content in the sludge will be greatly reduced. Then the multi-stage electric push rod 5 drives the sliding plate 6 and the rotating plate 7 to rise. At this time, the curing agent is transported through the feed pipe 201, the feed hole 6003 and the extrusion tube 202 by the external feeding equipment, so that the curing agent is discharged into the mixing part 1002, and the electric roller 2 is controlled to drive the upper auger 3 to rotate, so that the curing agent is mixed with the sludge, and then the sludge is solidified. After the mixing and solidification work is completed, the electric control valve 4 can be opened, and the electric roller 2 can drive the upper auger 3 to rotate clockwise at a top-down angle, so as to mix the sludge. Good solidified sludge is discharged to the designated solidified sludge accumulation area. Through the integrated design, when a small amount of sludge needs to be solidified, the solidification operation can be carried out directly in the sludge area, thereby avoiding the need to transport it to the sludge treatment plant, which leads to high solidification costs, and avoiding direct mixing by an excavator, which leads to uneven mixing and poor solidification effects. Before mixing, the sludge can be squeezed by the sliding plate 6 and the rotating plate 7 to reduce the content of sewage in the sludge, thereby reducing the amount of curing agent used, reducing the solidification cost, and facilitating the solidification work.

[0041] Taking into account that after the sludge is squeezed, the sludge is compressed into a whole and needs to be scattered by rotating the upper auger 3, so when feeding after compression, the curing agent is not easy to be distributed inside the sludge, resulting in a longer mixing time. Therefore, when the sliding plate 6 and the rotating plate 7 descend to squeeze the sludge, the sliding plate 6 will drive the feed pipe 201, the extrusion tube 202, the pneumatic push rod 203 and the hole blocking rod 204 to descend. At this time, the extrusion tube 202 will be inserted into the sludge, and because the hole blocking rod 204 blocks the discharge port of the extrusion tube 202, it is impossible to enter the extrusion tube 202 when the sludge is extruded. When the extrusion work is completed and the sliding plate 6 and the rotating plate 7 rise, the extrusion tube 202 will also be driven to rise. The sludge originally at the position of the extrusion tube 202 will present a tubular cavity. At this time, the pneumatic push rod 203 will drive the hole blocking rod 204 to rise, so that the bottom of the hole blocking rod 204 no longer blocks the discharge port of the extrusion tube 202. At the same time, the external feeding equipment will convey the curing agent to the feed pipe 201, so that the curing agent passes through the feed pipe 201, the feed hole 6003 and the extrusion tube 202 in turn, and is finally discharged from the discharge port of the extrusion tube 202, so that the curing agent is discharged into the tubular cavity of the sludge, and then the curing agent is discharged into the interior of the sludge. When the sliding plate 6 drives the extrusion tube 202 to rise back to its original position, it will continue to convey the curing agent, and then the required amount of curing agent will be gradually discharged into the mixing section 1002. After the extrusion tube 202 rises, the discharge port of the extrusion tube 202 will continue to be located in the sludge, so that the subsequent curing agent will be discharged in the upper part of the sludge, so that in the subsequent mixing process, the extrusion tube 202 is inserted into the sludge, so that the curing agent is directly discharged into the interior of the sludge, which facilitates the mixing of the curing agent and the sludge, and the subsequent curing agent will continue to be discharged into the upper part of the sludge, thereby further accelerating the mixing speed of the sludge and the curing agent.

[0042] Example 2

[0043] On the basis of Example 1, Figure 3-Figure 5 As shown, it also includes an annular frame 211 and a push plate 212; the lower part of the upper auger 3 is fixedly connected with the annular frame 211; the annular frame 211 is fixedly connected with three push plates 212; the push plates 212 are inclined.

[0044] It also includes an electromagnetic control valve 101 and a mud discharge pipe 102; the sliding plate 6 is provided with three mud outlets 6001; each mud outlet 6001 is equipped with an electromagnetic control valve 101; the sliding plate 6 is connected with the mud discharge pipe 102; the mud discharge pipe 102 is connected with all the mud outlets 6001, the mud discharge pipe 102 runs through the curing tube 1, and the mud discharge pipe 102 is a hose, so that the mud discharge pipe 102 can move up and down in the curing tube 1, and the sliding plate 6 is provided with a limiting part 6002, and the upper end of the auger 3 is in contact with the limiting part 6002, so that the auger 3 can push the mixed sludge into the mud outlet 6001.

[0045] The lower side of the sliding plate 6 is in a state of being low on the outside and high in the middle, so that when the sludge is squeezed, it moves toward the mud outlet 6001 of the sliding plate 6, thereby facilitating the discharge of the sludge. The push plate 212 contacts the nonwoven fabric 8, so that when the push plate 212 rotates, the sludge attached to the nonwoven fabric 8 is scraped off.

[0046] A dredged sludge solidification method for soil resource utilization, the specific steps are as follows:

[0047] Step 1: The sludge is pushed into the mixing section 1002 by the auger 3 below, and then the sliding plate 6 and the rotating plate 7 are lowered to squeeze the sludge, thereby squeezing out part of the water in the sludge to facilitate mixing with the curing agent;

[0048] Step 2: The feed pipe 201 is lowered together with the sliding plate 6 to feed the curing agent into the sludge in the compressed state, so that the sludge can be mixed with the curing agent faster, thereby accelerating the mixing speed;

[0049] Step 3: The push plate 212 is driven to rotate by the lower part of the upper auger 3, thereby pushing the sludge in the dead corner area of ​​the mixing part 1002, thereby avoiding sludge residue;

[0050] Step 4: When solidifying the sludge with low water content, the upper mixed sludge can be discharged first through the sludge discharge pipe 102 to speed up the solidification work.

[0051] The specific working steps are:

[0052] After the mixing and solidification is completed, the upper auger 3 is driven by the electric roller 2 to rotate clockwise at a top-down angle, so that the upper auger 3 pushes the mixed and solidified sludge to be discharged to the feed part 1001 through the feed port 1003, and then discharged to the designated position from the feed part 1001. However, in order to facilitate the mixing of the sludge in the mixing part 1002, the space of the mixing part 1002 is larger than the feed part 1001, so that the upper auger 3 cannot contact the inner wall of the mixing part 1002 space. Therefore, the sludge near the inner wall area of ​​the mixing part 1002 space is not easily pushed and discharged by the upper auger 3, thereby affecting the working efficiency of the sludge solidification. Therefore, when the upper auger 3 rotates, the upper auger 3 drives the push plate 212 to rotate through the annular frame 211, so that the push plate 212 pushes the sludge near the inner wall area of ​​the mixing part 1002 space to move toward the upper auger 3, thereby accelerating the discharge speed of the sludge, and then ensuring the working efficiency of the sludge solidification.

[0053] Taking into account that during sludge treatment, part of the treated sludge has a low water content and does not require dehydration, and only the curing agent needs to be mixed with the sludge. Therefore, when curing the sludge with a low water content, after the sludge and the curing agent are mixed, the multi-stage electric push rod 5 can be controlled to drive the sludge discharge pipe 102 to descend through the sliding plate 6, and at this time, the upper auger 3 is controlled to continue to rotate. When the sliding plate 6 contacts the sludge, the sludge will have no room to move. At this time, the electromagnetic control valve 101 is opened, and then the upper auger 3 rotates to push the sludge into the limiting part 6002, and then enters the sludge discharge pipe 102 through the mud outlet 6001, and finally is discharged from the discharge port of the sludge discharge pipe 102, directly discharging the upper sludge, and then the untreated sludge is pushed into the mixing part 1002 through the lower auger 3 to continue the curing work. Because the curing agent is fed into the upper part of the sludge through the feed pipe 201, the curing agent is mixed with the sludge. Although the mixing speed can be accelerated by directly feeding the curing agent into the sludge, since it is only fed into the upper part of the sludge, during stirring, the upper part of the sludge completes the mixing work quickly, while the lower part of the sludge is mixed unevenly, and it will take more time for the lower part of the sludge to complete the mixing with the curing agent. Therefore, at this time, the sliding plate 6 is lowered to discharge the upper sludge from the sludge discharge pipe 102, so there is no need to wait for the lower sludge to be mixed before discharging all the sludge, thereby accelerating the overall working speed of the sludge solidification work, and since the water content of the fed sludge is low, it will not affect the sludge remaining in the mixing part 1002, thereby avoiding the problem that the moisture in the newly fed sludge is absorbed by the residual sludge, resulting in an increase in the amount of curing agent used.

[0054] When the sludge is cleaned and the inside of the curing cylinder 1 needs to be cleaned, first connect the external water supply equipment to the mud discharge pipe 102 and the feed pipe 201, and then the external water supply equipment will send water into the curing cylinder 1 to clean the curing cylinder 1, and the electric control valve 4 will be in an open state, so that the cleaned water and sludge will be discharged from the feed port 1003. During cleaning, the upper auger 3 can be controlled to drive the push plate 212 to rotate clockwise at a top-down angle, so that the push plate 212 pushes away the sludge in the dead corner area of ​​the mixing part 1002 to avoid residue. Since the push plate 212 is in contact with the non-woven fabric 8, the push plate 212 will scrape off the sludge attached to the non-woven fabric 8 when it rotates. Through the above cleaning work, the residual sludge inside the curing cylinder 1 can be cleaned without disassembly, and the problem of blockage of the non-woven fabric 8, the mud discharge pipe 102 and the feed pipe 201 can be avoided, and maintenance is more convenient.

[0055] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A dredged sludge solidification device for soil resource utilization, comprising a solidification cylinder (1); characterized in that: It also includes an electric roller (2), an auger (3), an electric control valve (4), a multi-stage electric push rod (5), a sliding plate (6), a rotating plate (7), a non-woven fabric (8), an annular frame (9), a drain pipe (10) and a feeding assembly; the curing cylinder (1) is rotatably connected to the electric roller (2); the electric roller (2) is fixedly connected to two augers (3); the curing cylinder (1) is provided with two spaces, namely a feeding section (1001) and a mixing section (1002); the curing cylinder (1) is provided with at least six feeding ports (1003); the feeding section (1001) and the mixing section (1002) are connected via the feeding ports (1003); an electric control valve (4) is installed at each feeding port (1003); The cylinder (1) is fixedly connected with at least three multi-stage electric push rods (5); the telescopic parts of all the multi-stage electric push rods (5) are commonly fixedly connected with a sliding plate (6); the sliding plate (6) is rotatably connected with a rotating plate (7); the rotating plate (7) is slidably connected with the auger (3); the curing cylinder (1) is provided with at least six water outlet grooves (1004); each water outlet groove (1004) is fixedly connected with a non-woven fabric (8); the curing cylinder (1) is fixedly connected with an annular frame (9); the water outlet groove (1004) is surrounded by the annular frame (9); the sliding plate (6) is connected with a feed assembly for conveying a curing agent; the annular frame (9) is connected with a drainage pipe (10); the electric control valve (4) and the multi-stage electric push rod (5) are respectively connected with an external power supply; The mixing section (1002) has a larger space than the feeding section (1001); The feed assembly comprises a feed pipe (201), an extrusion pipe (202), a pneumatic push rod (203) and a hole blocking rod (204); the sliding plate (6) is provided with at least three feed holes (6003); the sliding plate (6) is connected with the feed pipe (201), and the feed pipe (201) is connected with all the feed holes (6003); the feed pipe (201) passes through the curing cylinder (1), and the feed pipe (201) is a hose; each feed hole (6003) of the sliding plate (6) is connected with an extrusion pipe (202), and an opening is provided at the lower end of the extrusion pipe (202); the sliding plate (6) is fixedly connected with at least three pneumatic push rods (203); each telescopic part of each pneumatic push rod (203) is fixedly connected with a hole blocking rod (204); each hole blocking rod (204) is located in the corresponding extrusion pipe (202).

2. The dredged sludge solidification device for soil resource utilization according to claim 1, characterized in that: The hole blocking rod (204) is composed of a thin rod and a blocking block, and the diameter of the thin rod is smaller than the inner diameter of the extruded tube (202), while the blocking block fits with the lower end opening of the extruded tube (202).

3. The dredged sludge solidification device for soil resource utilization according to claim 1, characterized in that: The connection between the thin rod of the hole blocking rod (204) and the blocking block is inclined.

4. A dredged sludge solidification device for soil resource utilization according to any one of claims 1 to 3, characterized in that: It also includes an annular frame (211) and a push plate (212); the lower part of the upper auger (3) is fixedly connected to the annular frame (211); the annular frame (211) is fixedly connected to at least three push plates (212); the push plates (212) are inclined.

5. The dredged sludge solidification device for soil resource utilization according to claim 4, characterized in that: It also includes an electromagnetic control valve (101) and a mud discharge pipe (102); the sliding plate (6) is provided with at least three mud outlets (6001); each mud outlet (6001) is provided with an electromagnetic control valve (101); the sliding plate (6) is connected to the mud discharge pipe (102); the mud discharge pipe (102) is connected to all the mud outlets (6001), the mud discharge pipe (102) passes through the curing cylinder (1), and the mud discharge pipe (102) is a hose; the sliding plate (6) is provided with a limiting portion (6002), and the upper end of the auger (3) is in contact with the limiting portion (6002).

6. The dredged sludge solidification device for soil resource utilization according to claim 5, characterized in that: The lower side of the sliding plate (6) is in a state where the outer side is low and the middle is high.

7. The dredged sludge solidification device for soil resource utilization according to claim 5, characterized in that: The push plate (212) is in contact with the non-woven fabric (8).

8. A dredged sludge solidification method for soil resource utilization, characterized in that: The solidification method uses the dredged sludge solidification device for soil resource utilization as described in claim 7, and the specific steps are as follows: Step 1: The sludge is pushed into the mixing section (1002) by the lower auger (3), and then the sliding plate (6) and the rotating plate (7) are lowered to squeeze the sludge, thereby squeezing out part of the water in the sludge to facilitate mixing with the curing agent; Step 2: The feed pipe (201) is lowered together with the sliding plate (6) to feed the curing agent into the sludge in a compressed state, so that the sludge can be mixed with the curing agent faster, thereby accelerating the mixing speed; Step 3: The push plate (212) is driven to rotate by the lower part of the upper auger (3), thereby pushing the sludge in the dead corner area of ​​the mixing part (1002), thereby avoiding sludge residue; Step 4: When solidifying the sludge with low water content, the upper mixed sludge can be discharged first through the sludge discharge pipe (102), thereby accelerating the solidification work.

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