A sludge solidification treatment machine and solidification process

Abstract

This invention relates to the field of sludge solidification treatment technology, and discloses a sludge solidification treatment machine and solidification process, including: a mixing arm, the top of which is connected to the excavator arm via a joint, and mixing heads are fixed on both sides of its bottom; blades; a distributing disc, the distributing disc being coaxially fixedly installed on the mixing head, and the distributing disc being connected to the solidifying agent tank via a main supply pipe; and a scraper assembly; the excavator's hydraulic system drives the transmission assembly to rotate the blades, which in turn drives the scraper assembly to rotate on the outer surface of the mixing head, scraping away the sludge at the nozzle while simultaneously picking up the sprayed solidifying agent. The scraper assembly and the blades rotate synchronously, discharging the solidifying agent into the sludge, which avoids the problem of the nozzle being blocked by sludge after long-term use, thus preventing the solidifying agent from being dispensed in the required quantity, ensuring smooth dispensing of the solidifying agent, and thereby improving the sludge solidification efficiency.

Description

Technical Field

[0001] This invention relates to the field of sludge solidification treatment technology, specifically to a sludge solidification treatment machine and solidification process. Background Technology

[0002] In water conservancy projects and river regulation projects, a large amount of dredged silt is usually generated. This silt has a high water content and low strength, and cannot be used directly as soil for engineering projects. At present, there are two common ways to deal with waste silt. One is to excavate and transport the waste silt to other places, which causes pollution transfer, secondary pollution and waste of natural resources, and increases costs. The other is to add a fixed proportion of solidification material to the silt to reduce the water content of the silt and increase its strength.

[0003] In related technologies, there are two methods for adding solidifying materials to silt: the first method is to add solidifying materials to the depths of the silt using cement mixing piles or similar large-scale pile foundation equipment and then mix them; the second method is to add solidifying materials to the surface of the silt and mix it using an excavator. The excavator's bucket is replaced with a hydraulic mixing device, the mounting plate is installed on the excavator's robotic arm, and the hydraulic mixing device is connected to the mounting plate using multiple sets of bolts. The hydraulic mixing device is then driven by the excavator's own hydraulic system to mix the silt.

[0004] The applicant found some existing technologies that use the hydraulic system of an excavator to drive a hydraulic mixing device to mix sludge and simultaneously add a solidifying agent. For example, patent publication number CN219823962U describes a method where the excavator arm is connected to a connector, the mixing arm enters the sludge vertically, and a solidifying agent flows through a feed pipe. Under the action of a hydraulic pump, the solidifying agent is sprayed from two ports of the feed pipe. At the same time, the blades on the two mixing heads thoroughly mix the sludge. The applicant's analysis shows that the drawback of this technical solution is that the two ports of the feed pipe are easily blocked by sludge, preventing the solidifying agent from being sprayed smoothly. This results in useless mixing by the blades, prolonging the time required for sludge solidification and causing extremely low sludge solidification efficiency. Based on this, the present invention provides a sludge solidification machine and solidification process that can intermittently clean the nozzle to prevent it from being blocked by sludge while spraying the solidifying agent. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a sludge solidification treatment machine and solidification process to solve the technical problem that the solidifying agent nozzle is easily blocked by sludge, preventing the solidifying agent from being sprayed out in the required amount.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A sludge solidification treatment machine, comprising:

[0008] The mixing arm has its top connected to the excavator arm via a connector, and mixing heads are fixed on both sides of its bottom.

[0009] The blades are arranged circumferentially on the outer wall of the mixing head, and the blades are driven to rotate by a transmission assembly located inside the mixing head. The transmission assembly is driven by a hydraulic mixing assembly, which is driven by the hydraulic system of the excavator.

[0010] A dispensing disc is coaxially fixedly mounted on the mixing head, and the dispensing disc is connected to the curing agent tank via a main supply pipe. The dispensing disc is connected to several circumferentially arranged supply branch pipes, each of which penetrates the mixing head, and its nozzle is located on the outer surface of the mixing head; and

[0011] The scraper assembly consists of several scraper assemblies arranged in a circular pattern, which slide in contact with the outer surface of the stirring head and are vertically mounted on the outer surface of the stirring head. The scraper assembly rotates synchronously with the blade.

[0012] As a further aspect of the present invention: a pressure pump is provided on the main feed pipe, and the pressure pump is connected to the transmission assembly.

[0013] As a further aspect of the present invention: each of the feeding branch pipes is provided with two nozzles, and the two nozzles on each feeding branch pipe are slidably engaged with a scraper assembly.

[0014] As a further aspect of the present invention: the transmission assembly includes:

[0015] The main gear, which is rotatably mounted on the inner wall of the stirring head, is connected to and driven to rotate by a hydraulic stirring assembly; and

[0016] A rotating ring is rotatably mounted on a stirring head, and the two are arranged coaxially. The rotating ring is fixedly connected to the blade and the scraper assembly. A gear ring is coaxially fixed on the inner wall of the rotating ring. The gear ring meshes with at least one secondary gear, and the secondary gear meshes with the main gear. The secondary gear is rotatably mounted on the inner wall of the stirring head.

[0017] As a further aspect of the present invention: the scraper assembly includes:

[0018] The first scraper is fixedly connected to the rotating ring via a connecting rod, and is vertically mounted on the outer surface of the stirring head, slidingly engaging with the outer surface of the stirring head; and

[0019] The second scraper is connected to the first scraper via an elastic folding plate, and is vertically mounted on the outer surface of the stirring head, slidingly engaging with the outer surface of the stirring head.

[0020] As a further aspect of the present invention: the scraper assembly further includes a limiting post fixed to the second scraper, the limiting post being slidably engaged with a slide rail disposed on the outer surface of the stirring head.

[0021] A sludge solidification process, the process comprising the following steps:

[0022] Step S1: Connect the connector to the excavator arm and connect the main feed pipe to the curing agent tank;

[0023] Step S2: Start the excavator and drive the excavator arm to reciprocate up and down. At the same time, the hydraulic system of the excavator drives the hydraulic mixing component, which causes the transmission component to start and drive several blades to rotate on the outer surface of the mixing head. The curing agent is delivered to the feeding branch pipe through the feeding main pipe and then sprayed out through several nozzles.

[0024] Step S3: When the blade rotates, it drives the scraper assembly to rotate on the outer surface of the mixing head, scraping away the sludge at the nozzle while picking up the sprayed curing agent. The scraper assembly and the blade rotate synchronously, putting the curing agent into the sludge.

[0025] As a further aspect of the present invention, step S3 specifically includes the following steps:

[0026] Step S31: While the transmission assembly drives the blade to rotate, it also drives the first scraper and the second scraper to rotate synchronously to scrape off the sludge at the nozzle and at the same time pick up the sprayed curing agent.

[0027] Step S32: When the second scraper rotates, the limiting post slides in the wave-shaped slide rail. When the second scraper is at the nozzle, the distance between it and the first scraper is the smallest. When the second scraper moves away from the nozzle, the distance between it and the first scraper gradually increases, and the elastic folding plate gradually stretches. When the second scraper moves closer to the nozzle, the distance between it and the first scraper gradually decreases, and the elastic folding plate gradually resets.

[0028] The beneficial effects of this invention are:

[0029] (1) In this invention, the mixing arm is connected to the excavator arm through a connector, and the curing agent is delivered to the distribution plate through the main feed pipe. The distribution plate delivers the curing agent to several feed branch pipes, and then the curing agent is sprayed through the nozzle. At the same time, the hydraulic system of the excavator drives the transmission component to rotate the blade to stir the sludge. This realizes the simultaneous addition of curing agent and stirring of sludge, thereby completing the sludge curing. When the blade rotates, it drives the scraper assembly to rotate on the outer surface of the mixing head. While scraping the sludge at the nozzle, it can also pick up the sprayed curing agent. The scraper assembly and the blade rotate synchronously to put the curing agent into the sludge. This can avoid the problem of the nozzle being blocked by sludge after long-term use, which prevents the curing agent from being added in the required amount. This ensures the smooth addition of the curing agent and improves the efficiency of sludge curing.

[0030] (2) In this invention, the hydraulic stirring assembly drives the main gear to rotate, which in turn drives the auxiliary gear to rotate, and then drives the gear ring to rotate, so that the rotating ring rotates on the stirring head, thereby realizing the rotation of several blades, and at the same time driving the scraper assembly to rotate. The greater the stirring rate, the greater the rotation speed of the scraper assembly, and the greater the scraping efficiency. It can adaptively improve the scraping efficiency when the amount of sludge is large, and minimize the possibility of the nozzle being blocked by sludge.

[0031] (3) In this invention, the rotating ring drives the blade to rotate, and simultaneously drives the first scraper to rotate, which can scrape off the sludge on the nozzle. At the same time, the limiting post is guided by the slide rail, which can achieve the minimum distance between the second scraper and the first scraper when the second scraper is at the nozzle; when the second scraper moves away from the nozzle, the distance between the second scraper and the first scraper gradually increases, and the elastic folding plate gradually stretches; when the second scraper moves closer to the nozzle, the distance between the second scraper and the first scraper gradually decreases, and the elastic folding plate gradually resets, so as to ensure that the two nozzles can be scraped and cleaned simultaneously by the first scraper and the second scraper, and the distance between the first scraper and the second scraper changes continuously, which can increase the range of the adsorbed curing agent, thereby increasing the contact area between the curing agent and the sludge, thereby improving the sludge curing efficiency. In addition, the reciprocating movement of the second scraper can also improve the sludge stirring efficiency. Attached Figure Description

[0032] The invention will now be further described with reference to the accompanying drawings.

[0033] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of the stirring head in this invention;

[0035] Figure 3 This is a schematic diagram of the blade structure in this invention;

[0036] Figure 4 This is a schematic diagram of the material distribution disc in this invention;

[0037] Figure 5 This is a schematic diagram of the transmission component in this invention;

[0038] Figure 6 This is a schematic diagram of the rotating ring structure in this invention;

[0039] Figure 7 In this invention Figure 3 A magnified schematic diagram of the structure at point A.

[0040] In the diagram: 1. Stirring arm; 2. Connector; 3. Stirring head; 4. Blade; 5. Transmission assembly; 501. Main gear; 502. Secondary gear; 503. Gear ring; 504. Rotary ring; 6. Main feed pipe; 7. Distribution plate; 8. Nozzle; 9. Scraper assembly; 901. First scraper; 902. Second scraper; 903. Elastic folding plate; 904. Limiting post; 905. Slide rail; 906. Connecting rod; 10. Secondary stirring head; 11. Feeding branch pipe; 12. Connecting plate. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-7 As shown, the present invention is a sludge solidification treatment machine, comprising:

[0043] The mixing arm 1 is connected to the excavator arm at its top via a connector 2, and mixing heads 3 are fixed on both sides of its bottom.

[0044] Blade 4, a plurality of blades 4 are arranged circumferentially on the outer wall of the mixing head 3, and the blades 4 are driven to rotate by a transmission assembly 5 disposed in the mixing head 3. The transmission assembly 5 is driven by a hydraulic mixing assembly, and the hydraulic mixing assembly is driven by the hydraulic system of the excavator.

[0045] A dispensing disc 7 is coaxially fixedly mounted on the mixing head 3, and the dispensing disc 7 is connected to the curing agent tank via a main supply pipe 6. The dispensing disc 7 is connected to several circumferentially arranged supply branch pipes 11, each of which penetrates the mixing head 3, and its nozzle 8 is located on the outer surface of the mixing head 3; and

[0046] The scraper assembly 9 consists of several scraper assemblies arranged in a circle, which slide and engage with the outer surface of the stirring head 3 and are vertically erected on the outer surface of the stirring head 3. The scraper assembly 9 rotates synchronously with the blade 4.

[0047] The auxiliary stirring head 10 is rotatably mounted on the end of the stirring head 3 away from the stirring arm 1, and the auxiliary stirring head 10 rotates synchronously with the blade 4. In actual use, the auxiliary stirring head 10 contacts the sludge before the blade 4, which can break up the sludge and improve the efficiency of the blade 4 in stirring the sludge.

[0048] In one embodiment, the excavator arm, hydraulic mixing assembly, and hydraulic system of the excavator are all prior art. This application does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of this application.

[0049] In practical application, the mixing arm 1 is connected to the excavator arm via connector 2, and the curing agent is delivered to the distribution plate 7 via the main feed pipe 6. The distribution plate 7 delivers the curing agent to several feed branch pipes 11, and then sprays the curing agent through the nozzle 8. At the same time, the hydraulic system of the excavator drives the transmission component 5 to rotate the blade 4, which is used to stir the sludge. This achieves the simultaneous addition of curing agent and stirring of sludge, thereby completing the sludge curing. When the blade 4 rotates, it drives the scraper assembly 9 to rotate on the outer surface of the mixing head 3. While scraping the sludge at the nozzle 8, the scraper assembly 9 can also pick up the sprayed curing agent. The scraper assembly 9 and the blade 4 rotate synchronously, putting the curing agent into the sludge. This can avoid the problem of the nozzle 8 being blocked by sludge after long-term use, which would prevent the curing agent from being added in the required amount. This ensures the smooth addition of the curing agent, thereby improving the sludge curing efficiency.

[0050] like Figures 1-4 As shown, in a preferred embodiment of the present invention, a pressure pump is provided on the feed main pipe 6, and the pressure pump is connected to the transmission assembly 5.

[0051] In one embodiment, the pressure pump is connected to an external controller, and the transmission assembly 5 is also connected to the external controller. The external controller is existing technology, and this application has not improved upon it. Therefore, it is not necessary to disclose its specific mechanical and circuit structures, and this does not affect the integrity of this application.

[0052] In practical applications, this embodiment correlates the delivery efficiency of the curing agent with the rotational speed of the blade 4, thereby achieving an adaptive increase in the curing agent delivery rate when the stirring rate is increased, thus enhancing the applicability of this application.

[0053] like Figure 3 As shown, in a preferred embodiment of the present invention, each of the feeding branch pipes 11 is provided with two nozzles 8, and the two nozzles 8 on each feeding branch pipe 11 are slidably engaged with a scraper assembly 9; in practical applications, the arrangement of two nozzles 8 makes the spray range of the curing agent more extensive, increases the contact area between the curing agent and the sludge, and thus improves the efficiency of sludge curing.

[0054] like Figures 3-6 As shown, in a preferred embodiment of the present invention, the transmission assembly 5 includes:

[0055] The main gear 501 is rotatably mounted on the inner wall of the stirring head 3 and is driven to rotate by a hydraulic stirring assembly; and

[0056] A rotating ring 504 is rotatably mounted on the stirring head 3, and the two are coaxially arranged. The rotating ring 504 is fixedly connected to the blade 4 and the scraper assembly 9. A gear ring 503 is coaxially fixed on the inner wall of the rotating ring 504. The gear ring 503 meshes with at least one secondary gear 502, and the secondary gear 502 meshes with the main gear 501. The secondary gear 502 is rotatably mounted on the inner wall of the stirring head 3.

[0057] In one embodiment, the rotating ring 504 penetrates the stirring head 3, dividing the stirring head 3 into a front end connected to the stirring arm 1 and a tail end provided with the blade 4. The front end and the tail end are connected by at least one connecting plate 12, which is located in the hollow part of the rotating ring 504.

[0058] In practical application, the hydraulic stirring assembly drives the main gear 501 to rotate, which in turn drives the secondary gear 502 to rotate, and then drives the gear ring 503 to rotate, so that the rotating ring 504 rotates on the stirring head 3, thereby realizing the rotation of several blades 4. At the same time, it drives the scraper assembly 9 to rotate. The higher the stirring rate, the higher the rotation speed of the scraper assembly 9, and the greater the scraping efficiency. It can adaptively improve the scraping efficiency when the amount of sludge is large, and minimize the possibility of the nozzle 8 being blocked by sludge.

[0059] like Figures 3-7 As shown, in a preferred embodiment of the present invention, the scraper assembly 9 includes:

[0060] The first scraper 901 is fixedly connected to the rotating ring 504 via a connecting rod 906, and is vertically mounted on the outer surface of the stirring head 3, and slides in cooperation with the outer surface of the stirring head 3; and

[0061] The second scraper 902 is connected to the first scraper 901 via an elastic folding plate 903, and is vertically mounted on the outer surface of the stirring head 3, and slides in cooperation with the outer surface of the stirring head 3.

[0062] In one embodiment, the scraper assembly 9 further includes a limiting post 904 fixed on the second scraper 902, the limiting post 904 being slidably engaged with a slide rail 905 disposed on the outer surface of the stirring head 3; wherein the slide rail 905 is a wave-shaped track.

[0063] In practical application, the rotating ring 504 drives the blade 4 to rotate, simultaneously causing the first scraper 901 to rotate synchronously, which can scrape off the sludge on the nozzle 8. At the same time, the limiting post 904 is guided by the slide rail 905, which can ensure that when the second scraper 902 is located at the nozzle 8, the distance between it and the first scraper 901 is minimized; when the second scraper 902 rotates away from the nozzle 8, the distance between it and the first scraper 901 gradually increases, and at the same time, the elastic folding plate 903 gradually stretches; when the second scraper 902 moves closer to the nozzle 8... As the distance between the nozzle and the first scraper 901 gradually decreases, the elastic folding plate 903 gradually returns to its original position, thereby ensuring that the two nozzles 8 can be scraped and cleaned simultaneously by the first scraper 901 and the second scraper 902. The constantly changing distance between the first scraper 901 and the second scraper 902 increases the range of the adsorbed curing agent, thereby increasing the contact area between the curing agent and the sludge, thus improving the sludge curing efficiency. Furthermore, the reciprocating movement of the second scraper 902 also improves the sludge mixing efficiency.

[0064] Please see Figures 1-7 As shown, the present invention is a sludge solidification process, comprising the following steps:

[0065] Step S1: Connect connector 2 to the excavator arm and connect the main feed pipe 6 to the curing agent tank;

[0066] Step S2: Start the excavator and drive the excavator arm to reciprocate up and down. At the same time, the hydraulic system of the excavator drives the hydraulic mixing component, which causes the transmission component 5 to start and drive several blades 4 to rotate on the outer surface of the mixing head 3. The curing agent is delivered to the feeding branch pipe 11 through the feeding main pipe 6 and then sprayed out through several nozzles 8.

[0067] Step S3: When the blade 4 rotates, it drives the scraper assembly 9 to rotate on the outer surface of the mixing head 3, scraping away the sludge at the nozzle 8 while also picking up the sprayed curing agent. The scraper assembly 9 and the blade 4 rotate synchronously, putting the curing agent into the sludge.

[0068] like Figures 3-7 As shown, in a preferred embodiment of the present invention, step S3 specifically includes the following steps:

[0069] Step S31: While the transmission assembly 5 drives the blade 4 to rotate, it also drives the first scraper 901 and the second scraper 902 to rotate synchronously to scrape off the sludge at the nozzle 8 and at the same time pick up the sprayed curing agent.

[0070] Step S32: When the second scraper 902 rotates, the limiting post 904 slides within the wave-shaped slide rail 905. When the second scraper 902 is located at the nozzle 8, the distance between it and the first scraper 901 is the smallest. When the second scraper 902 moves away from the nozzle 8, the distance between it and the first scraper 901 gradually increases, while the elastic folding plate 903 gradually stretches. When the second scraper 902 moves closer to the nozzle 8, the distance between it and the first scraper 901 gradually decreases, while the elastic folding plate 903 gradually returns to its original position.

[0071] The working principle of this invention: In the above embodiments, this invention provides a sludge solidification treatment machine and solidification process. The mixing arm 1 is connected to the excavator arm through the connector 2, and the solidifying agent is delivered to the distribution plate 7 through the main feed pipe 6. The distribution plate 7 delivers the solidifying agent to several feed branch pipes 11, and then sprays the solidifying agent through the nozzle 8. At the same time, the hydraulic system of the excavator drives the transmission component 5 to rotate the blade 4 to mix the sludge, realizing the simultaneous addition of solidifying agent and mixing of sludge, thereby completing the sludge solidification. When the blade 4 rotates, it drives the scraper component 9 to rotate on the outer surface of the mixing head 3, scraping off the sludge at the nozzle 8 while also picking up the sprayed solidifying agent. The scraper component 9 and the blade 4 rotate synchronously, putting the solidifying agent into the sludge. This avoids the problem of the nozzle 8 being blocked by sludge after long-term use, which would prevent the solidifying agent from being added in the required amount, ensuring the smooth addition of the solidifying agent and thus improving the sludge solidification efficiency.

[0072] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A sludge solidification treatment machine, characterized in that, include: The mixing arm (1) is connected to the excavator arm at its top via a connector (2), and mixing heads (3) are fixed on both sides of its bottom. Blade (4), a plurality of blades (4) are arranged in a circular pattern on the outer wall of the mixing head (3), and the blades (4) are driven to rotate by a transmission assembly (5) provided in the mixing head (3). The transmission assembly (5) is driven by a hydraulic mixing assembly, and the hydraulic mixing assembly is driven by the hydraulic system of the excavator. The dispensing disc (7) is coaxially fixedly mounted on the stirring head (3), and the dispensing disc (7) is connected to the curing agent tank through the main supply pipe (6). The dispensing disc (7) is connected to several circumferentially arranged supply branch pipes (11), each of which is arranged through the stirring head (3), and its nozzle (8) is located on the outer surface of the stirring head (3); and The scraper assembly (9) consists of several scraper assemblies (9) arranged in a circular pattern, which slide in contact with the outer surface of the stirring head (3) and are vertically mounted on the outer surface of the stirring head (3). The scraper assembly (9) rotates synchronously with the blade (4). The transmission assembly (5) includes: The main gear (501) is rotatably mounted on the inner wall of the stirring head (3) and is driven to rotate by a hydraulic stirring assembly; and A rotating ring (504) is rotatably mounted on a stirring head (3) and the two are coaxially arranged. The rotating ring (504) is fixedly connected to the blade (4) and the scraper assembly (9). A gear ring (503) is coaxially fixed on the inner wall of the rotating ring (504). The gear ring (503) meshes with at least one auxiliary gear (502), and the auxiliary gear (502) meshes with the main gear (501). The auxiliary gear (502) is rotatably mounted on the inner wall of the stirring head (3). The scraper assembly (9) includes: The first scraper (901) is fixedly connected to the rotating ring (504) via a connecting rod (906), and is vertically mounted on the outer surface of the stirring head (3), and slides against the outer surface of the stirring head (3); and The second scraper (902) is connected to the first scraper (901) through an elastic folding plate (903), and is vertically mounted on the outer surface of the stirring head (3) and slides in cooperation with the outer surface of the stirring head (3); The scraper assembly (9) also includes a limiting post (904) fixed on the second scraper (902), and the limiting post (904) slides in cooperation with a slide rail (905) provided on the outer surface of the stirring head (3).

2. The sludge solidification treatment machine according to claim 1, characterized in that, A pressure pump is installed on the main feed pipe (6), and the pressure pump is connected to the transmission assembly (5). connect .

3. The sludge solidification treatment machine according to claim 1, characterized in that, Each of the feed branch pipes (11) is provided with two nozzles (8), and the two nozzles (8) on each feed branch pipe (11) are slidably engaged with a scraper assembly (9).

4. A sludge solidification process, characterized in that, The process includes a sludge solidification treatment machine as described in any one of claims 1-3, and the process includes the following steps: Step S1: Connect the connector (2) to the excavator arm and connect the feed main pipe (6) to the curing agent tank; Step S2: Start the excavator and drive the excavator arm to reciprocate up and down. At the same time, the hydraulic system of the excavator drives the hydraulic mixing component, which causes the transmission component (5) to start and drive several blades (4) to rotate on the outer surface of the mixing head (3). The curing agent is delivered to the feeding branch pipe (11) through the feeding main pipe (6) and then sprayed out through several nozzles (8). Step S3: When the blade (4) rotates, it drives the scraper assembly (9) to rotate on the outer surface of the mixing head (3). While scraping away the sludge at the nozzle (8), it also picks up the sprayed curing agent. The scraper assembly (9) and the blade (4) rotate synchronously, and the curing agent is put into the sludge. Step S3 specifically includes the following steps: Step S31: While the transmission assembly (5) drives the blade (4) to rotate, it also drives the first scraper (901) and the second scraper (902) to rotate synchronously to scrape off the sludge at the nozzle (8) and at the same time get contaminated with the sprayed curing agent. Step S32: When the second scraper (902) rotates, the limiting post (904) slides in the wave-shaped slide rail (905). When the second scraper (902) is located at the nozzle (8), the distance between it and the first scraper (901) is the smallest. When the second scraper (902) moves away from the nozzle (8), the distance between it and the first scraper (901) gradually increases, and at the same time, the elastic folding plate (903) gradually stretches. When the second scraper (902) moves closer to the nozzle (8), the distance between it and the first scraper (901) gradually decreases, and at the same time, the elastic folding plate (903) gradually returns to its original position.

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