River dredging sludge solidification treatment device

Abstract

The present application relates to the technical field of river sludge solidification, and particularly relates to a river dredging sludge solidification treatment device, which comprises a box body, a sludge pipe is fixedly installed on the box body, a mixing assembly is fixedly installed at one end of the sludge pipe in the box body, a solidification assembly is fixedly installed on the box body, and the solidification assembly is located below the mixing assembly; lime powder is introduced into the lime pipe through air blowing, sequentially passes through the air shell, the particle pipe and the equal distribution pipe, is sprayed to the bottom of the mixing tank through the powder nozzles on the surface of the equal distribution pipe to complete the distribution of the lime powder, the crankshaft is driven to rotate through the output end of the distribution motor, the sliding rod drives the abutting plate to move downward, the soft rubber sealing plug is driven by the abutting plate to move downward, the soft rubber sealing plug is separated from the inner wall of the mixing tank, the sludge flows along the inner wall of the mixing tank and contacts and fuses with the lime powder at the bottom to reduce the water content, the sludge is pretreated, and the effect of subsequent chemical solidification is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of river sludge solidification, in particular to a river dredging sludge solidification treatment device. BACKGROUND

[0002] River dredging is a water conservancy project, specifically dredging and widening the river, and in this process, the sludge of the river needs to be removed, and the sludge produced needs to be solidified for recycling. When solidification is performed, a solidification treatment device needs to be used.

[0003] The patent number CN119822586A discloses a river dredging sludge solidification treatment device for water conservancy projects, which comprises a reaction box, a support leg fixedly installed at the bottom of the reaction box, a suction pump fixedly installed at the top of the reaction box, a suction pipe fixedly installed at the top of the suction pump, and a stirring device arranged inside the reaction box. The stirring device comprises a motor, a rotating shaft, a stirring plate, a gear one, a reciprocating screw rod, a gear two, a sleeve, an elastic expansion rod one, and a scraping rod. The stirring plate is continuously stirred in the reaction box to ensure that each part of the sludge can fully react with the solidifying agent, thereby enhancing the solidification effect and effectively reducing the mobility of harmful substances in the sludge. At the same time, through stirring, the water content and harmful substances in the sludge can better react with the solidifying agent, reducing the release of odor or emission of harmful gases caused by incomplete solidification.

[0004] However, the device still has obvious problems in solidifying agent control. In the original scheme, the sludge is sucked into the device by the sludge pump, and then the solidifying agent is added for stirring and solidification. However, in actual use, the sludge sucked by the sludge pump has a high water content, and when it is directly mixed with the solidifying agent for chemical solidification, the contact between the solidifying agent and the solid particles is limited, which easily forms phenomena such as "mud wrapping", "local clumping", and "dry outside and wet inside", resulting in poor solidification effect. SUMMARY

[0005] The present application aims to provide a river dredging sludge solidification treatment device to solve the problems raised in the background.

[0006] The technical solution of the present application is a river dredging sludge solidification treatment device, which comprises a box body, a sludge pipe fixedly installed on the box body, a mixing assembly fixedly installed at one end of the sludge pipe inside the box body, and a solidification assembly fixedly installed on the box body below the mixing assembly.

[0007] The mixing assembly comprises a mixing tank mounted at one end of the sludge pipe, a gas shell fixedly mounted on the mixing tank, a sliding port formed in the upper side of the gas shell, a gas lock slidably mounted in the sliding port, an opening and closing unit fixedly mounted on the upper side of the gas lock, a particle pipe fixedly mounted on one side of the gas shell, a uniform distribution pipe fixedly mounted at the other end of the particle pipe, a plurality of powder nozzles fixedly mounted on the surface of the uniform distribution pipe, a lime pipe fixedly mounted on the other side of the gas shell and extending to the outside of the box body;

[0008] The curing assembly comprises an extrusion pipe fixedly mounted on the box body, a material guide port provided on the surface of the extrusion pipe, the material guide port being fixedly connected with the bottom end of the mixing tank, a curing agent adding unit fixedly mounted on the inner wall of the box body, a chemical curing agent adding port formed in the surface of the extrusion pipe, the curing agent adding unit being provided with the curing agent through the chemical curing agent adding port, and a stirring unit fixedly mounted on one side of the extrusion pipe.

[0009] Preferably, the opening and closing unit comprises a rack, the gas lock being fixedly mounted on the upper side of the rack, a return spring being fixedly mounted on the upper side of the gas lock, the return spring being fixedly mounted on one side of the mixing tank, a crankshaft being rotatably mounted on the mixing tank, a half gear being fixedly mounted at one end of the crankshaft, the half gear being engaged with the rack, a stop block being fixedly mounted on the surface of the mixing tank, and the top end of the return spring being fixedly mounted on the lower side of the stop block.

[0010] Preferably, two fixed rods are fixedly mounted on the inner wall of the mixing tank, the same limiting sleeve is fixedly mounted on the opposite ends of the two fixed rods, a sliding rod is slidably mounted in the limiting sleeve, a stop plate is fixedly mounted at the top end of the sliding rod, a soft rubber sealing plug is fixedly mounted on the upper side of the stop plate, a connecting rod is rotatably mounted on the lower side of the stop plate, and the bottom end of the connecting rod is rotatably mounted on the crankshaft.

[0011] Preferably, a cloth motor is fixedly mounted on the inner wall of the box body, and the output end of the cloth motor is coaxially fixedly connected with one end of the crankshaft.

[0012] Preferably, the curing agent adding unit comprises a curing agent filling kettle fixedly mounted on the inner wall of the box body, a curing agent liquid inlet pipe fixedly mounted on the curing agent filling kettle, a conveying pump fixedly mounted on the inner wall of the box body, the liquid inlet end of the conveying pump being fixedly connected with one end of the curing agent liquid inlet pipe, a curing agent conveying pipe fixedly mounted on the liquid outlet end of the conveying pump, and the other end of the curing agent conveying pipe being fixedly connected with the chemical curing agent adding port.

[0013] Preferably, the stirring unit comprises a screw cavity opened in the inside of the extrusion pipe, two double screws are fitted and installed in the screw cavity, a double screw pump is fixedly installed at the other end of the extrusion pipe, a stirring motor is fixedly installed at one side of the box body, and the stirring motor provides power for the double screw pump through the output end.

[0014] Preferably, a box door is rotatably installed at one side of the box body, and the box door is fixedly installed with a controller at one side.

[0015] Preferably, the chemical curing agent adding port is opened at the intersection of the double screw variable pitch area and the non-variable pitch area.

[0016] Preferably, the soft rubber sealing plug is in the shape of a frustum and is made of soft silicone material.

[0017] Preferably, an observation window is opened at one side of the box door to facilitate observation of the curing agent filling kettle.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] 1. The external lime powder enters the lime pipe by air blowing, and then enters the equal distribution pipe through the air shell and the particle pipe, and is sprayed to the bottom of the mixing tank through the powder nozzle on the surface of the equal distribution pipe to complete the distribution of the lime powder, and then the crankshaft is driven to rotate by the output end of the distribution motor, the half gear is driven to rotate by the crankshaft, the half gear is separated from the rack, and the airlock is driven to move downward by the elastic force of the return spring to block the air shell and stop the distribution of the lime powder, the connecting rod is driven to rotate by the crankshaft during rotation, the slide rod is driven to move downward by the connecting rod under the action of the limiting sleeve ring, the slide rod drives the stop plate to move downward, the stop plate drives the soft rubber sealing plug to move downward, the soft rubber sealing plug is separated from the inner wall of the mixing tank, the sludge flows along the inner wall of the mixing tank and contacts and fuses with the lime powder at the bottom, the water content is reduced, the sludge is pretreated, and the effect of subsequent chemical curing is improved.

[0020] 2. When the sludge injection amount reaches the maximum value, the half gear is engaged with the rack, and the air valve is driven to move upward, the sludge is supplemented with lime powder again, until the crankshaft drives the soft rubber sealing plug to seal again, and the lime powder is sprayed again for two cycles, the amount of lime powder is dynamically adjusted according to the amount of sludge, the consumption of lime powder is reduced, and the lime powder can uniformly contact and mix with the sludge, and the water content is further reduced.

[0021] 3. The sludge enters the extrusion pipe through the material guide port and is preliminarily stirred by the front section of the double screw to be fully mixed with the lime powder, and the chemical solidifying agent in the solidifying agent filling pot is delivered into the extrusion pipe through the solidifying agent delivery pipe from the solidifying agent inlet pipe by the delivery pump to contact with the sludge and mix the sludge and the solidifying agent in the variable pitch area of the double screw to fully react, separate the physical solidification and the chemical solidification for multi-stage treatment, effectively reduce the problem of false solidification of the sludge and improve the solidification effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] The application will be further explained in connection with the drawings and embodiments:

[0023] Figure 1 is the overall structure schematic diagram of the application;

[0024] Figure 2 is the internal structure schematic diagram of the box of the application;

[0025] Figure 3 is the mixing tank and its related structure schematic diagram of the application;

[0026] Figure 4 is the cross-section structure schematic diagram of the mixing tank of the application;

[0027] Figure 5 is Figure 4 the structure enlarged schematic diagram of the A area in the figure;

[0028] Figure 6 is Figure 4 the structure enlarged schematic diagram of the B area in the figure;

[0029] Figure 7 is the soft rubber sealing plug and its related structure schematic diagram of the application;

[0030] Figure 8 is the structure schematic diagram of the stirring unit of the application.

[0031] Explanation of reference signs: 1, box; 2, box door; 3, controller; 4, observation window; 5, extrusion pipe; 6, sludge pipe; 7, mixing tank; 8, stirring motor; 9, screw pump; 10, screw cavity; 11, solidifying agent filling pot; 12, material feeding motor; 13, solidifying agent delivery pipe; 14, delivery pump; 15, solidifying agent inlet pipe; 16, crankshaft; 17, connecting rod; 18, fixed rod; 19, limit collar; 20, soft rubber sealing plug; 21, lime pipe; 22, granular pipe; 23, stop block; 24, return spring; 25, rack; 26, half gear; 27, air lock; 28, air casing; 29, equal division pipe; 30, powder nozzle; 31, slide bar; 32, abutment plate; 33, double screw; 34, chemical solidifying agent adding port; 35, material guide port. DETAILED DESCRIPTION

[0032] The application will be further described in connection with the specific embodiments, however, those skilled in the art should understand that the detailed description given in connection with the drawings is for better explanation, the structure of the application must be beyond the limited embodiments, and for some equivalent alternatives or common means, the detailed description will not be given, but still belongs to the protection scope of the application.

[0033] Figures 1-8 is the best embodiment of the application, the following will be described in connection with the drawings Figures 1-8 The application will be further described in connection with the specific embodiments, however, those skilled in the art should understand that the detailed description given in connection with the drawings is for better explanation, the structure of the application must be beyond the limited embodiments, and for some equivalent alternatives or common means, the detailed description will not be given, but still belongs to the protection scope of the application.

[0034] As Figures 1-8 shown, the river dredging sludge solidification treatment device, including box 1, box 1 is fixedly installed with sludge pipe 6, sludge pipe 6 is fixedly installed with mixing assembly at one end inside the box 1, box 1 is fixedly installed with solidification assembly, solidification assembly is below the mixing assembly;

[0035] The mixing assembly comprises a mixing tank 7, the mixing tank 7 is installed at one end of the sludge pipe 6, the mixing tank 7 is fixedly installed with air casing 28, the air casing 28 is provided with sliding port on the upper side, the sliding port is slidably installed with air lock 27, the air lock 27 is fixedly installed with opening and closing unit on the upper side, the air casing 28 is fixedly installed with particle pipe 22 on one side, the particle pipe 22 is fixedly installed with equal distribution pipe 29 on the other end, the equal distribution pipe 29 is fixedly installed with a plurality of powder nozzles 30 on the surface, the air casing 28 is fixedly installed with lime pipe 21 on the other side and extends to the outside of the box 1;

[0036] The solidification assembly comprises an extrusion pipe 5, the extrusion pipe 5 is fixedly installed on the box 1, the surface of the extrusion pipe 5 is provided with guide port 35, the guide port 35 is fixedly connected with the bottom end of the mixing tank 7, the inner wall of the box 1 is fixedly installed with solidification agent adding unit, the surface of the extrusion pipe 5 is provided with chemical solidification agent adding port 34, the solidification agent adding unit is supplied with solidification agent through the chemical solidification agent adding port 34, one side of the extrusion pipe 5 is fixedly installed with stirring unit.

[0037] According to the function inside the device, the mixing assembly is installed at the upper position inside the box 1, and the curing assembly is installed at the lower position. The curing assembly is connected with the mixing assembly. The external sludge is transported to the mixing assembly through the sludge pipe 6 to reduce the water content through preliminary physical curing, and then enters the curing assembly to add the curing agent through the curing agent adding unit to realize the curing of the sludge. The distribution pipe 29 in the mixing assembly is installed at the lower position of the mixing tank 7 through the particle pipe 22. The lime powder blown by the air is uniformly sprayed through the multiple powder nozzles 30 installed at equal intervals on the surface, and can be attached to the lower inner wall or the bottom position of the mixing tank 7. When the sludge enters, it is mixed with the lime powder to reduce the water content and complete the preliminary physical curing. The cured sludge enters the extrusion pipe 5 through the guide port 35. The sludge is secondarily chemically cured by the stirring unit in the extrusion pipe 5 and is quickly discharged to complete the curing of the sludge.

[0038] Further, the opening and closing unit includes a rack 25, the rack 25 is fixedly installed on the upper side of an air lock 27, the air lock 27 is fixedly installed on the upper side of a return spring 24, the mixing tank 7 is fixedly installed on one side of the return spring 24, the mixing tank 7 is rotatably installed on a crankshaft 16, one end of the crankshaft 16 is fixedly installed on a half gear 26, the half gear 26 is engaged with the rack 25, the surface of the mixing tank 7 is fixedly installed with a stop block 23, and the top end of the return spring 24 is fixedly installed on the lower side of the stop block 23.

[0039] Through the above structure, the air lock 27 slidably installed on the air shell 28 is controlled to open and close through the rack 25. When the half gear 26 is engaged with the rack 25, the crankshaft 16 rotates to drive the half gear 26 to rotate, the rack 25 moves downward to drive the air lock 27 to open, at this time, the lime powder enters. When the half gear 26 is disengaged from the rack 25, the air lock 27 is pushed to seal the air shell 28 under the elastic force of the return spring 24 to stop the spraying of the lime powder. The lime powder can be stopped from spraying in time after being distributed. Compared with directly continuously spraying a large amount of lime powder into the sludge, the imbalance of the mixing ratio caused by excessive spraying can be effectively prevented, the water content can be reduced, and a large amount of heat can be generated. The accuracy and economy of the use of lime powder are improved.

[0040] Further, the inner wall of the mixing tank 7 is fixedly installed with two fixed rods 18, the opposite ends of the two fixed rods 18 are fixedly installed with the same limiting sleeve ring 19, the limiting sleeve ring 19 is slidably installed with a sliding rod 31, the top end of the sliding rod 31 is fixedly installed with an abutting plate 32, the upper side of the abutting plate 32 is fixedly installed with a soft rubber sealing plug 20, the lower side of the abutting plate 32 is rotatably installed with a connecting rod 17, and the bottom end of the connecting rod 17 is rotatably installed on the crankshaft 16.

[0041] Through the above structure, the limiting sleeve ring 19 is used for limiting the slide rod 31, cooperating with the connecting rod 17 to realize the up-down movement of the soft rubber sealing plug 20, when the soft rubber sealing plug 20 moves downward, the sludge is separated from the inner wall of the mixing tank 7 and introduced, and when it moves upward, it is sealed, realizing the control of the sludge introduction. After the lime powder is distributed, the sealing plug can be moved downward by the connecting rod 17 system to complete the unsealing action, so that the sludge can flow smoothly along the inner wall of the mixing tank 7 to the bottom of the lime powder area, and multiple mixing is carried out, preventing a large amount of lime powder from directly mixing with the sludge, and preventing the situation of uneven mixing of lime clumps. It is helpful to realize stable and uniform initial curing mixing effect.

[0042] Further, the inner wall of the box body 1 is fixedly installed with a distribution motor 12, and the output end of the distribution motor 12 is coaxially fixedly connected with one end of the crankshaft 16.

[0043] Through the above structure, a platform is installed in the box body 1, and the distribution motor 12 is fixedly installed on the platform. The output shaft of the distribution motor 12 is coaxially connected with the crankshaft 16 to provide power for the crankshaft 16.

[0044] Further, the curing agent adding unit comprises a curing agent filling kettle 11 fixedly installed on the inner wall of the box body 1, and a curing agent liquid inlet pipe 15 fixedly installed on the curing agent filling kettle 11. The inner wall of the box body 1 is fixedly installed with a conveying pump 14, the inlet end of the conveying pump 14 is fixedly connected with one end of the curing agent liquid inlet pipe 15, the outlet end of the conveying pump 14 is fixedly installed with a curing agent conveying pipe 13, and the other end of the curing agent conveying pipe 13 is fixedly connected with a chemical curing agent adding port 34.

[0045] Through the above structure, the curing agent adding unit arranged on the inner wall of the box body 1 comprises a curing agent filling kettle 11, a conveying pump 14, a curing agent liquid inlet pipe 15 and a curing agent conveying pipe 13. The curing agent filling kettle 11 is used for storing the curing agent, realizing the full-closed automatic injection of the chemical curing agent, effectively improving the operation safety and avoiding the volatilization and diffusion of the curing agent, and enhancing the stability and environmental adaptability of the curing agent in the later chemical reaction stage.

[0046] Further, the stirring unit comprises a screw cavity 10 opened in the inside of the extrusion pipe 5, two double screws 33 are fixedly installed in the screw cavity 10, the other end of the extrusion pipe 5 is fixedly installed with a double screw 33 pump 9, one side of the box body 1 is fixedly installed with a stirring motor 8, and the stirring motor 8 provides power for the double screw 33 pump 9 through the output end.

[0047] Through the above structure, the inside of the extrusion pipe 5 is matched with two double screws 33 through the screw cavity 10, the surface of the double screw 33 is provided with a plurality of variable pitch structures, and the two double screws 33 are driven by the kinetic energy provided by the double screw 33 pump 9 and the stirring motor 8 in the prior art. The sludge with low water content and the chemical curing agent can be forcedly mixed by the high-shear double screw 33 in the extrusion process, the reaction contact efficiency of the curing agent and the sludge is improved, and the uniformity and completeness of the overall reaction are significantly improved.

[0048] Further, the box door 2 is rotatably installed on one side of the box 1, and the controller 3 is fixedly installed on one side of the box door 2.

[0049] Through the above structure, the box door 2 can be rotatably opened through the hinge, which is convenient for the operator to maintain and adjust the internal components. The controller 3 (which can control and monitor the electronic components in the device) and the observation window 4 provided on the box door 2 can directly observe the liquid level and working state of the curing agent filling pot 11, thereby improving the operation convenience and operation safety of the overall device.

[0050] Further, the chemical curing agent adding port 34 is located at the intersection of the variable pitch region and the non-variable pitch region of the double screw 33.

[0051] Through the above structure, the chemical curing agent adding port 34 is located at the intersection of the variable pitch region and the non-variable pitch region of the double screw 33, which can realize that the curing agent enters the high-shear mixing area immediately after being injected, avoids the curing agent staying in the static area, ensures that the curing agent and the sludge are fully contacted and mixed, and prevents false curing caused by delayed or uneven distribution of the curing agent.

[0052] Further, the soft rubber sealing plug 20 is a conical frustum in soft silicone material.

[0053] Through the above structure, the soft rubber sealing plug 20 is made of conical frustum silicone material, which can delay the opening time during the opening process, provide time for the distribution of lime powder, and assist the lime powder to be fully distributed. Its elastic rebound performance and corrosion resistance make it able to stably cope with complex fluid environments, effectively prevent leakage, improve sealing reliability and service life.

[0054] Further, the box door 2 is provided with an observation window 4 for observing the curing agent filling pot 11.

[0055] Through the above structure, the observation window 4 on the box door 2 provides a direct vision channel, so that the operator can observe and maintain the state of the curing agent filling pot 11 without disassembling the cover, avoid environmental interference caused by frequent opening of the box door 2, and improve the convenience during use.

[0056] Working principle: when the device is in use, first use the sludge pump to access the sludge into the sludge pipe 6, the air blowing delivery of lime powder into the lime pipe 21, and then through the controller 3 to start cloth motor 12, delivery pump 14 and stirring motor 8 in turn;

[0057] The sludge in the sludge pipe 6 and into the mixing tank 7 upper position, at this time the soft rubber sealing plug 20 to the bottom of the mixing tank 7 sealing, airlock 27 is in the open state, the external lime powder by air blowing into the lime pipe 21, and in turn through the gas shell 28, particle tube 22 into the even distribution pipe 29, and through the even distribution pipe 29 surface powder nozzle 30 will lime powder spraying to the bottom of the mixing tank 7 position to complete the distribution of lime powder, at this time the cloth motor 12 output end drive crankshaft 16 rotation, crankshaft 16 drive half gear 26 rotation, make half gear 26 and rack 25 disengaged, under the action of the reset spring 24 with airlock 27 downward movement to stop the distribution of lime powder, the crankshaft 16 rotation process drive connecting rod 17 rotation, connecting rod 17 through the action of the limit collar 19 drive slide bar 31 downward movement, slide bar 31 drive the stop plate 32 downward movement, stop plate 32 drive soft rubber sealing plug 20 downward movement, when the crankshaft 16 rotation 90°, soft rubber sealing plug 20 away from the inner wall of the mixing tank 7, sludge along the inner wall of the mixing tank 7 flow into and with the bottom of the lime powder contact fusion, reduce its water content;

[0058] When the crankshaft 16 again rotation 90° sludge reach flow into the amount, at this time the half gear 26 will be engaged with the rack 25, and drive the air valve upward movement, the sludge for the second lime powder supplement, until the crankshaft 16 again rotation 90°, the soft rubber sealing plug 20 sealing, at this time the lime powder for the second powder, complete the initial treatment of sludge;

[0059] The water content of the sludge through the guide hole 35 into the extrusion pipe 5, and through the double screw 33 of the front position of the preliminary mixing make it fully with lime powder, when entering into the non variable pitch area and variable pitch area intersection, delivery pump 14 will fill the chemical curing agent in the curing agent filling pot 11 from the curing agent liquid inlet pipe 15 through the curing agent delivery pipe 13 to the extrusion pipe 5, and the sludge contact and through the double screw 33 of the variable pitch area of the sludge box curing agent mixing, make it fully react, and quickly through the extrusion pipe 5 discharge to the curing dish for curing, complete the curing of sludge.

[0060] The above merely describes preferred embodiments of the present application, but is not intended to limit the present application to other forms, and any person skilled in the art can make changes or modifications to the above disclosed technical contents into equivalent embodiments with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiments without departing from the technical solution content of the present application and according to the technical essence of the present application still belongs to the protection scope of the technical solution of the present application.

Claims

1. A device for solidifying dredged sludge from a waterway, comprising a box (1), characterized in that: The box (1) is fixedly installed with a sludge pipe (6), one end of the sludge pipe (6) is fixedly installed with a mixing assembly in the box (1), the box (1) is fixedly installed with a curing assembly, and the curing assembly is located below the mixing assembly. The mixing assembly comprises a mixing tank (7) installed at one end of the sludge pipe (6), the mixing tank (7) is fixedly installed with an air casing (28), a sliding port is formed in the upper side of the air casing (28), the sliding port is slidably installed with an air lock (27), the upper side of the air lock (27) is fixedly installed with an opening and closing unit, one side of the air casing (28) is fixedly installed with a particle pipe (22), the other end of the particle pipe (22) is fixedly installed with a uniform distribution pipe (29), a plurality of powder nozzles (30) are fixedly installed on the surface of the uniform distribution pipe (29), the other side of the air casing (28) is fixedly installed with a lime pipe (21) and extends to the outside of the box (1). The curing assembly comprises an extrusion pipe (5) fixedly installed on the box (1), the surface of the extrusion pipe (5) is provided with a material guide port (35), the material guide port (35) is fixedly connected with the bottom end of the mixing tank (7), the inner wall of the box (1) is fixedly installed with a curing agent adding unit, the surface of the extrusion pipe (5) is provided with a chemical curing agent adding port (34), the curing agent adding unit is supplied with curing agent through the chemical curing agent adding port (34), and one side of the extrusion pipe (5) is fixedly installed with a stirring unit. The opening and closing unit comprises a rack (25), the rack (25) is fixedly installed with the air lock (27) on the upper side, the air lock (27) is fixedly installed with a return spring (24) on the upper side, the mixing tank (7) is fixedly installed with the return spring (24) on one side, the mixing tank (7) is rotatably installed with a crankshaft (16), one end of the crankshaft (16) is fixedly installed with a half gear (26), the half gear (26) is engaged with the rack (25), and the surface of the mixing tank (7) is fixedly installed with a stop block (23); and the top end of the return spring (24) is fixedly installed on the lower side of the stop block (23). The inner wall of the mixing tank (7) is fixedly installed with two fixed rods (18), the opposite ends of the two fixed rods (18) are fixedly installed with the same limiting sleeve ring (19), the limiting sleeve ring (19) is slidably installed with a sliding rod (31), the top end of the sliding rod (31) is fixedly installed with an abutting plate (32), the upper side of the abutting plate (32) is fixedly installed with a soft rubber sealing plug (20), and the lower side of the abutting plate (32) is rotatably installed with a connecting rod (17), and the bottom end of the connecting rod (17) is rotatably installed on the crankshaft (16).

2. The river dredged sludge solidification treatment apparatus according to claim 1, characterized by: The inner wall of the box (1) is fixedly installed with a cloth motor (12), and one end of the crankshaft (16) is coaxially and fixedly connected with the output end of the cloth motor (12).

3. The river dredged sludge solidification treatment apparatus according to claim 1, characterized by: The solidifying agent adding unit comprises a solidifying agent filling kettle (11) fixedly installed on the inner wall of the box (1), a solidifying agent liquid inlet pipe (15) fixedly installed on the solidifying agent filling kettle (11), a conveying pump (14) fixedly installed on the inner wall of the box (1), a liquid inlet end of the conveying pump (14) fixedly connected with one end of the solidifying agent liquid inlet pipe (15), a solidifying agent conveying pipe (13) fixedly installed on the liquid outlet end of the conveying pump (14), and the other end of the solidifying agent conveying pipe (13) fixedly connected with the chemical solidifying agent adding port (34).

4. The river dredged sludge solidification treatment apparatus according to claim 1, characterized by: The stirring unit comprises a screw cavity (10) formed in the inside of the extrusion pipe (5), two double screws (33) fittedly installed in the screw cavity (10), and a double screw (33) pump (9) fixedly installed at the other end of the extrusion pipe (5), wherein a stirring motor (8) is fixedly installed on one side of the box (1) and provides power for the double screw (33) pump (9) through an output end.

5. The river dredged sludge solidification treatment apparatus according to claim 1, characterized by: One side of the box (1) is rotatably installed with a box door (2), and one side of the box door (2) is fixedly installed with a controller (3).

6. The river dredged sludge solidification treatment apparatus according to claim 1, characterized by: The chemical solidifying agent adding port (34) is formed at the intersection of the variable pitch region and the non-variable pitch region of the double screw (33).

7. The river dredged sludge solidification treatment apparatus according to claim 1, characterized by: The soft rubber sealing plug (20) is in the shape of a frustum of cone and is made of soft silica gel.

8. The river dredged sludge solidification treatment apparatus according to claim 5, characterized by: One side of the box door (2) is formed with an observation window (4) for conveniently observing the solidifying agent filling kettle (11).

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