Premixed concrete mixing plant wastewater treatment device

Abstract

The invention relates to a premixed concrete mixing plant wastewater treatment device, and belongs to the technical field of premixed concrete engineering, and the premixed concrete mixing plant wastewater treatment device comprises a coagulating basin, a mixing mechanism, a chemical feeding body, a chemical adding assembly and a driving assembly, the stirring mechanism comprises a stirring rod rotationally arranged in the coagulating basin, a stirring blade assembly arranged on the stirring rod and a driving source arranged on the coagulating basin, and the driving source is used for driving the stirring rod to rotate; the medicine passing body is slidably connected to the stirring rod in the radial direction of the stirring rod, and the medicine passing body is provided with a plurality of medicine outlet nozzles used for discharging medicine; the chemical adding assembly is arranged on the coagulating basin and is used for introducing chemicals into the chemical introducing body; the driving assembly is used for driving the medicine passing body to reciprocate when the stirring rod rotates. The wastewater destabilizing agent has the advantages that the agent can be conveniently and uniformly dispersed in wastewater in a short time, and the wastewater destabilizing effect is improved to a certain extent.

Description

Technical Field

[0001] This application relates to the technical field of ready-mixed concrete engineering, and particularly relates to a wastewater treatment device for a ready-mixed concrete mixing plant. Background Art

[0002] In a ready-mixed concrete mixing plant, a large amount of wastewater containing concrete residues is generated during processes such as mixer cleaning and transport vehicle cleaning. To avoid environmental pollution, the wastewater containing concrete residues needs to be treated before discharge.

[0003] Concrete wastewater treatment generally includes processes such as pretreatment, coagulation, flocculation, sedimentation, sludge treatment, and clean water discharge; in the coagulation stage, chemicals need to be continuously added to the wastewater in the coagulation tank and stirred to disrupt the stability of the colloidal particles in the wastewater and promote the aggregation of fine suspended solids into flocs that are easy to separate. Currently, however, the chemicals are usually added from the upper end of the coagulation tank, making it difficult for the chemicals to be evenly dispersed in a short time and reducing the destabilization effect of the wastewater. Summary of the Invention

[0004] To help evenly disperse the chemicals in the wastewater in a short time and improve the destabilization effect of the wastewater to a certain extent, this application provides a wastewater treatment device for a ready-mixed concrete mixing plant.

[0005] The wastewater treatment device for a ready-mixed concrete mixing plant provided by this application adopts the following technical solutions: A wastewater treatment device for a ready-mixed concrete mixing plant, comprising: A coagulation tank; A stirring mechanism, the stirring mechanism includes a stirring rod rotatably arranged in the coagulation tank, a stirring blade assembly arranged on the stirring rod, and a driving source arranged on the coagulation tank, the driving source is used to drive the stirring rod to rotate; A chemical delivery body, the chemical delivery body is slidably connected to the stirring rod along the radial direction of the stirring rod, and the chemical delivery body is provided with a plurality of chemical outlets for discharging chemicals; A chemical adding assembly, arranged on the coagulation tank, for introducing chemicals into the chemical delivery body; A driving assembly, for driving the chemical delivery body to reciprocate when the stirring rod rotates.

[0006] Preferably, the chemical adding assembly includes a chemical box installed on the coagulation tank and a chemical delivery member arranged on the chemical box, the chemical delivery member is used to transport the chemicals in the chemical box into the chemical delivery body.

[0007] Preferably, the medicine delivery member includes a first medicine delivery tube disposed on the medicine cartridge and a second medicine delivery tube disposed on the stirring rod. One end of the first medicine delivery tube away from the medicine cartridge is rotationally communicated with the stirring rod. A medicine delivery channel is formed in the stirring rod. One end of the second medicine delivery tube is communicated with the medicine delivery channel, and the other end is communicated with the medicine passing body. The second medicine delivery tube is a telescopic corrugated tube.

[0008] Preferably, the driving assembly includes a reciprocating screw rotatably disposed on the stirring rod and a rotating member disposed in the coagulation tank. The rotation axis of the reciprocating screw is perpendicular to the rotation axis of the stirring rod. The medicine passing body is threadedly sleeved on the reciprocating screw. The rotating member is used to drive the reciprocating screw to rotate when the stirring rod rotates.

[0009] Preferably, the rotating member includes a mating ring body sleeved on the reciprocating screw, mating convex blocks disposed on the mating ring body, and mating balls disposed on the inner wall of the coagulation tank. A plurality of the mating convex blocks are circumferentially disposed along the mating ring body. A plurality of the mating balls are circumferentially disposed along the coagulation tank. There is a clearance coupling between the mating convex blocks and adjacent mating balls.

[0010] Preferably, a plurality of the medicine passing bodies are provided. The plurality of medicine passing bodies are symmetrically distributed in pairs along the axis of the stirring rod. The reciprocating screw corresponds to the medicine passing body one by one.

[0011] Preferably, when one of the two symmetrically disposed medicine passing bodies is located on the side of the corresponding reciprocating screw close to the stirring rod, the other is located on the side of the corresponding reciprocating screw away from the stirring rod.

[0012] Preferably, telescopic protective covers are disposed at both ends of the medicine passing body. The reciprocating screw is located inside the telescopic protective covers.

[0013] Preferably, a guiding scraper is disposed on the stirring rod. The guiding scraper abuts against the bottom wall of the coagulation tank. The medicine passing body is slidably connected to the guiding scraper.

[0014] Preferably, the driving source includes a driving motor installed on the coagulation tank, a transmission gear coaxially connected to the output shaft of the driving motor, and a toothed ring sleeved on the stirring rod. The transmission gear and the toothed ring are meshed.

[0015] In summary, the present application includes the following beneficial technical effects: When treating wastewater, first input the pretreated concrete wastewater into the coagulation tank. Then, start the driving source to drive the stirring rod to drive the stirring blade assembly to rotate. At the same time, add the medicament into the medicament conveying body through the medicament adding assembly. The medicament flows into the wastewater through the medicine outlet nozzle of the medicament conveying body. During the rotation of the stirring rod, the driving assembly drives the medicament conveying body to reciprocate in a direction close to or away from the stirring rod, so that the moving path of the medicament conveying body during the rotation of the stirring rod is a wavy line, expanding the medicament adding range of the medicament conveying body, helping the medicament to be evenly dispersed in the wastewater in a short time, and improving the destabilization effect of the wastewater to a certain extent. Brief Description of the Drawings

[0016] Figure 1 is the overall structural schematic diagram of the embodiment of the present application.

[0017] Figure 2 is the overall structural sectional view of the coagulation tank in the embodiment of the present application.

[0018] Figure 3 is the partial structural sectional view of the embodiment of the present application.

[0019] Figure 4 is Figure 2 the enlarged view of part A in

[0020] Description of the reference numerals: 1, coagulation tank; 2, stirring rod; 3, stirring blade assembly; 4, driving source; 41, driving motor; 42, transmission gear; 43, gear ring; 5, medicament conveying body; 6, medicine outlet nozzle; 7, medicament box; 8, first medicine conveying pipe; 9, second medicine conveying pipe; 10, medicine conveying channel; 11, reciprocating screw; 12, rotating part; 121, mating ring body; 122, mating convex block; 123, mating ball; 13, telescopic protective cover; 14, guiding scraper; 15, input pipe; 16, output pipe; 17, medicament conveying pipeline; 18, converging pipe; 19, support plate; 20, pump body; 21, mounting ring. Detailed Description of the Embodiment

[0021] The following Figures 1 - 4 is a further detailed description of the present application.

[0022] The embodiment of the present application discloses a wastewater treatment device for a ready-mixed concrete mixing station. Referring to Figure 1 , the wastewater treatment device for a ready-mixed concrete mixing station includes a coagulation tank 1, a stirring mechanism, a medicament conveying body 5, a medicament adding assembly and a driving assembly. Among them, the cross-section of the coagulation tank 1 is circular; for the convenience of inputting the pretreated concrete wastewater, the upper end of the coagulation tank 1 is provided with an input pipe 15; for the convenience of conveying the coagulated wastewater to the flocculation process, the lower end of the coagulation tank 1 is communicated with an output pipe 16, and a valve is installed on the output pipe 16.

[0023] Referring to Figure 1 and Figure 2, to facilitate the stirring of the wastewater in the coagulation tank 1, the stirring mechanism includes a stirring rod 2, a stirring blade assembly 3 and a driving source 4. The stirring rod 2 rotates and penetrates through the coagulation tank 1, and the rotation axis of the stirring rod 2 is arranged in the vertical direction. The stirring rod 2 is located at the center of the coagulation tank 1. The stirring blade assembly 3 is fixed on the stirring rod 2. Specifically, the stirring blade assembly 3 includes a plurality of stirring blades fixed on the stirring rod 2. The driving source 4 is arranged on the coagulation tank 1, and the driving source 4 is used to drive the stirring rod 2 to rotate.

[0024] Refer to Figure 2 , to facilitate the installation of the medicine-passing body 5, a guiding scraper 14 is fixed at the lower end of the stirring rod 2. The length direction of the guiding scraper 14 is perpendicular to the rotation axis of the stirring rod 2. The medicine-passing body 5 is slidably connected to the guiding scraper 14 along the radial direction of the stirring rod 2. The medicine-passing body 5 is provided with a plurality of medicine outlets 6 for discharging medicine, so as to facilitate the medicine to flow into the wastewater from the plurality of medicine outlets 6.

[0025] Refer to Figure 2 , the medicine adding assembly is arranged on the coagulation tank 1 and is used to introduce medicine into the medicine-passing body 5; the driving assembly is arranged on the coagulation tank 1, and the driving assembly is used to drive the medicine-passing body 5 to reciprocate in a direction close to or away from the stirring rod 2 when the stirring rod 2 rotates.

[0026] When treating wastewater, first input the pretreated concrete wastewater into the coagulation tank 1 through the input pipe 15. At this time, the valve on the output pipe 16 is in a closed state; then start the driving source 4 to drive the stirring rod 2 to drive the stirring blades to rotate. At the same time, add medicine into the medicine-passing body 5 through the medicine adding assembly. The medicine flows into the wastewater through the medicine outlets 6 of the medicine-passing body 5. During the rotation of the stirring rod 2, the driving assembly drives the medicine-passing body 5 to reciprocate in a direction close to or away from the stirring rod 2, so that the moving path of the medicine-passing body 5 during the rotation of the stirring rod 2 is a wavy line, expanding the medicine adding range of the medicine-passing body 5, helping the medicine to be evenly dispersed in the wastewater in a short time, and improving the destabilization effect of the wastewater to a certain extent.

[0027] Refer to Figure 2 , to facilitate improving the destabilization effect of the wastewater, a plurality of medicine-passing bodies 5 are provided, and the guiding scrapers 14 correspond to the medicine-passing bodies 5 one by one, so as to further evenly disperse the medicine in the wastewater in a short time. Specifically, the plurality of medicine-passing bodies 5 are symmetrically distributed in pairs along the axis of the stirring rod 2 and are offset from the stirring blades, which helps to improve the uniformity of medicine addition. In the example of this application, four medicine-passing bodies 5 are provided. In other embodiments, the number of medicine-passing bodies 5 can be set as required.

[0028] Refer to Figure 2 and Figure 3, for the convenience of the flow of the medicament in the medicament conduit 5, the medicament conduit 5 is a cylinder, the length direction of the medicament conduit 5 is parallel to the axis direction of the stirring rod 2, and a plurality of medicament pipelines 17 are arranged inside the medicament conduit 5. The upper ends of the plurality of medicament pipelines 17 are jointly communicated with a converging pipe 18. The medicament pipelines 17 extend along the length direction of the medicament conduit 5. A plurality of medicine outlets 6 are respectively installed and communicated on the medicament pipelines 17, and a plurality of medicine outlets 6 corresponding to each medicament pipeline 17 are arranged along its own length direction. The medicament enters the plurality of medicament pipelines 17 from the converging pipe 18, and then flows out from the corresponding plurality of medicine outlets 6, so that the medicament can be added into the wastewater.

[0029] Referring to Figure 1 and Figure 2 , for the convenience of adding the medicament into the medicament conduit 5, a support plate 19 is fixed on the outer wall of the coagulation tank 1. The medicine adding assembly includes a medicine box 7 and a medicine conveying member. The medicine box 7 is fixedly installed on the support plate 19. The medicine box 7 is used for storing the medicament required for coagulation. The medicine conveying member is arranged on the medicine box 7. The medicine conveying member is used to convey the medicament in the medicine box 7 to the converging pipe 18 of the medicament conduit 5 (referring to Figure 3 ).

[0030] Referring to Figure 2 and Figure 3 , for the convenience of conveying the medicament in the medicine box 7 (referring to Figure 1 ) to the converging pipe 18 of the medicament conduit 5, a medicine conveying channel 10 is opened at the center of the upper end of the stirring rod 2. The medicine conveying member includes a first medicine conveying pipe 8 and a second medicine conveying pipe 9. One end of the first medicine conveying pipe 8 is communicated with the medicine box 7, and the other end is rotationally communicated with the stirring rod 2, so that the medicament in the first medicine conveying pipe 8 can flow into the medicine conveying channel 10 in the stirring rod 2. A pump body 20 is installed on the first medicine conveying pipe 8; the second medicine conveying pipes 9 correspond to the medicament conduits 5 one by one. One end of the second medicine conveying pipe 9 is communicated with the medicine conveying channel 10, and the other end is communicated with the converging pipe 18 of the corresponding medicament conduit 5. Specifically, the second medicine conveying pipe 9 is a telescopic corrugated pipe.

[0031] When medicine needs to be added, the pump body 20 on the first medicine conveying pipe 8 is started to pump the medicament into the first medicine conveying pipe 8. Then the first medicine conveying pipe 8 conveys the medicament to the medicine conveying channel 10. Then the medicament enters the plurality of second medicine conveying pipes 9 respectively through the medicine conveying channel 10. The second medicine conveying pipes 9 input the medicament into the converging pipe 18 of the corresponding medicament conduit 5, so that the addition of the medicament into the wastewater can be realized.

[0032] Referring to Figure 1 and Figure 2, To facilitate the rotation of the stirring rod 2, the driving source 4 includes a driving motor 41, a transmission gear 42, and a gear ring 43. The driving motor 41 is fixedly installed at the top of the coagulation tank 1. The transmission gear 42 is coaxially connected to the output shaft of the driving motor 41. The rotation axis of the transmission gear 42 is parallel to the rotation axis of the stirring rod 2. The gear ring 43 is fixedly sleeved on the stirring rod 2 and is located outside the coagulation tank 1. The transmission gear 42 meshes with the gear ring 43.

[0033] During use, start the driving motor 41. The driving motor 41 drives the transmission gear 42 to rotate. The transmission gear 42 drives the gear ring 43 to rotate, thereby realizing the continuous rotation of the stirring rod 2.

[0034] Refer to Figure 2 and Figure 3 , To facilitate the reciprocating movement of the medicine-passing body 5 when the stirring rod 2 rotates, an installation ring 21 is fixedly sleeved on the stirring rod 2. The driving assembly includes a reciprocating screw 11 and a rotating member 12. The reciprocating screws 11 correspond to the medicine-passing bodies 5 one by one. Each reciprocating screw 11 is rotatably arranged on the installation ring 21. The rotation axis of the reciprocating screw 11 is perpendicular to the rotation axis of the stirring rod 2. Specifically, the rotation axis of the reciprocating screw 11 is parallel to the sliding direction of the corresponding medicine-passing body 5. The upper end of the medicine-passing body 5 is threadedly sleeved on the corresponding reciprocating screw 11, and the reciprocating screw 11 is misaligned with the medicine-passing pipeline 17 in the medicine-passing body 5. Since the lower end of the medicine-passing body 5 is limited by the guiding scraper 14, the medicine-passing body 5 will not rotate during the rotation of the reciprocating screw 11. The rotating member 12 is arranged in the coagulation tank 1. The rotating member 12 is used to drive the reciprocating screw 11 to rotate when the stirring rod 2 rotates.

[0035] Refer to Figure 2 、 Figure 3 and Figure 4 , To facilitate the rotation of the reciprocating screw 11 when the stirring rod 2 rotates, the rotating member 12 includes a mating ring body 121, mating convex blocks 122, and mating balls 123. The mating ring bodies 121 correspond to the reciprocating screws 11 one by one. The mating ring body 121 is fixedly sleeved on the end of the reciprocating screw 11 away from the installation ring 21. A plurality of mating convex blocks 122 are fixedly arranged along the circumferential direction of the mating ring body 121. A plurality of mating balls 123 are fixedly arranged along the circumferential direction of the inner wall of the coagulation tank 1. The gap between the mating convex blocks 122 and the adjacent mating balls 123 is coupled, that is, the gear ring formed by the mating ring body 121 and the mating convex blocks 122 meshes with the plurality of mating balls 123.

[0036] When the stirring rod 2 rotates, the mounting ring 21 drives the reciprocating screw rod 11 to rotate along the axis of the stirring rod 2, so that the engaging protrusions 122 of the engaging ring body 121 on the reciprocating screw rod 11 roll along the engaging ball 123 under the action of force. During the rolling process of the engaging ring body 121, the self-rotation of the reciprocating screw rod 11 is realized. Since the reciprocating screw rod 11 rotates continuously in the same direction, the components threadedly sleeved on the reciprocating screw rod 11 can reciprocate, thereby realizing the reciprocating movement of the medicine-passing body 5, which helps to expand the movement range of the medicine-passing body 5 and facilitates the uniform dispersion of the medicament in the wastewater in a short time, and improves the destabilization effect of the wastewater to a certain extent. And the gap between adjacent engaging balls 123 helps to scrape off or push the impurities adhering to the engaging ball 123 above the engaging protrusion 122 into the wastewater below.

[0037] Refer to Figure 2 and Figure 3 , among the two symmetric medicine-passing bodies 5, when one is located on the side of the corresponding reciprocating screw rod 11 close to the stirring rod 2, the other is located on the side of the corresponding reciprocating screw rod 11 away from the stirring rod 2. Thereby, it can further add medicine to the wastewater evenly, and it is not easy for the medicine-passing bodies 5 to concentrate on one side close to or away from the stirring rod 2 at the same time.

[0038] Refer to Figure 2 and Figure 3 , the water level of the wastewater in the coagulation tank 1 is always lower than the position of the reciprocating screw rod 11. To facilitate the further protection of the reciprocating screw rod 11, self-resetting telescopic protective covers 13 are fixed at both ends of the medicine-passing body 5. The reciprocating screw rod 11 is located inside the telescopic protective covers 13. One telescopic protective cover 13 on one side of the medicine-passing body 5 abuts against the mounting ring 21, and the other telescopic protective cover 13 on the other side abuts against the engaging ring body 121. Thus, during the movement of the medicine-passing body 5, the telescopic protective covers 13 always cover the reciprocating screw rod 11 and do not affect the rotation of the reciprocating screw rod 11. Specifically, the telescopic protective cover 13 can be a corrugated cover with a spring.

[0039] Refer to Figure 2 , the guiding scraper 14 abuts against the bottom wall of the coagulation tank 1, so that during the rotation of the stirring rod 2, the guiding scraper 14 can scrape the sediment on the bottom wall of the coagulation tank 1 to ensure the stirring effect.

[0040] The implementation principle of the embodiment of this application is as follows: When treating wastewater, first input the pretreated concrete wastewater into the coagulation tank 1 through the input pipe 15. At this time, the valve on the output pipe 16 is in a closed state. Then start the driving motor 41, and the driving motor 41 drives the transmission gear 42 to rotate. The transmission gear 42 drives the gear ring 43 to rotate, causing the stirring rod 2 to drive the stirring blades to rotate. At the same time, start the pump body 20 on the first chemical feeding pipe 8 to pump the chemical into the first chemical feeding pipe 8. Then the first chemical feeding pipe 8 transports the chemical to the chemical feeding channel 10. Then the chemical enters multiple second chemical feeding pipes 9 through the chemical feeding channel 10 respectively. The second chemical feeding pipes 9 input the chemical into the converging pipe 18 of the chemical passing body 5. Then the chemical flows from multiple chemical outlet nozzles 6 to the wastewater along each chemical passing pipe 17. During the rotation of the stirring rod 2, the installation ring 21 drives the reciprocating screw 11 to rotate along the axis of the stirring rod 2, so that the engaging convex block 122 of the engaging ring body 121 on the reciprocating screw 11 rolls along the engaging ball 123 under the action of force. During the rolling of the engaging ring body 121, the self-rotation of the reciprocating screw 11 is realized. The rotation of the reciprocating screw 11 causes the chemical passing body 5 to move reciprocally, so that the moving path of the chemical passing body 5 during the rotation of the stirring rod 2 is a wavy line, expanding the chemical adding range of the chemical passing body 5, helping the chemical to be evenly dispersed in the wastewater in a short time, and improving the destabilization effect of the wastewater to a certain extent.

[0041] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A wastewater treatment device for a ready-mixed concrete mixing plant, characterized in that, Comprising: Coagulation tank (1); Stirring mechanism, the stirring mechanism includes a stirring rod (2) rotatably arranged in the coagulation tank (1), a stirring blade assembly (3) arranged on the stirring rod (2), and a driving source (4) arranged on the coagulation tank (1), the driving source (4) is used to drive the stirring rod (2) to rotate; Medicine-passing body (5), the medicine-passing body (5) is slidably connected to the stirring rod (2) along the radial direction of the stirring rod (2), and the medicine-passing body (5) is provided with a plurality of medicine-outlet nozzles (6) for discharging medicine; Medicine adding assembly, arranged on the coagulation tank (1), for introducing medicine into the medicine-passing body (5); Driving assembly, for driving the medicine-passing body (5) to reciprocate when the stirring rod (2) rotates.

2. The wastewater treatment device for a ready-mixed concrete mixing plant according to claim 1, characterized in that: The medicine adding assembly includes a medicine box (7) installed on the coagulation tank (1) and a medicine conveying member arranged on the medicine box (7), and the medicine conveying member is used to convey the medicine in the medicine box (7) into the medicine-passing body (5).

3. The wastewater treatment device for a ready-mixed concrete mixing plant according to claim 2, characterized in that: The medicine conveying member includes a first medicine conveying pipe (8) arranged on the medicine box (7) and a second medicine conveying pipe (9) arranged on the stirring rod (2), one end of the first medicine conveying pipe (8) away from the medicine box (7) is rotatably communicated with the stirring rod (2), a medicine conveying channel (10) is opened in the stirring rod (2), one end of the second medicine conveying pipe (9) is communicated with the medicine conveying channel (10), and the other end is communicated with the medicine-passing body (5), and the second medicine conveying pipe (9) is a telescopic corrugated pipe.

4. A wastewater treatment device for a ready-mixed concrete mixing plant according to claim 1, characterized in that: The driving assembly includes a reciprocating screw rod (11) rotatably arranged on the stirring rod (2) and a rotating member (12) arranged in the coagulation tank (1), the rotation axis of the reciprocating screw rod (11) is perpendicular to the rotation axis of the stirring rod (2), the medicine-passing body (5) is threadedly sleeved on the reciprocating screw rod (11), and the rotating member (12) is used to drive the reciprocating screw rod (11) to rotate when the stirring rod (2) rotates.

5. The wastewater treatment device for a ready-mixed concrete mixing station according to claim 4, wherein: The rotating member (12) includes a mating ring body (121) sleeved on the reciprocating screw rod (11), a mating convex block (122) arranged on the mating ring body (121), and a mating ball (123) arranged on the inner wall of the coagulation tank (1), a plurality of the mating convex blocks (122) are arranged along the circumferential direction of the mating ring body (121), a plurality of the mating balls (123) are arranged along the circumferential direction of the coagulation tank (1), and the gap between the mating convex block (122) and the adjacent mating ball (123) is coupled.

6. The wastewater treatment device for a ready-mixed concrete mixing plant according to claim 4, characterized in that: A plurality of the medicine-passing bodies (5) are provided, and the plurality of medicine-passing bodies (5) are symmetrically distributed in pairs along the axis of the stirring rod (2), and the reciprocating screw rod (11) corresponds to the medicine-passing body (5) one by one.

7. A waste water treatment device for a ready-mixed concrete mixing plant according to claim 6, characterized in that: When one of the two symmetrically arranged medicine-passing bodies (5) is located on the side of the corresponding reciprocating screw rod (11) close to the stirring rod (2), the other is located on the side of the corresponding reciprocating screw rod (11) away from the stirring rod (2).

8. A wastewater treatment device for a ready-mixed concrete mixing station according to claim 4, characterized in that: Both ends of the medicine-passing body (5) are provided with telescopic protective covers (13), and the reciprocating screw rod (11) is located inside the telescopic protective covers (13).

9. A wastewater treatment device for a ready-mixed concrete mixing plant according to claim 1, characterized in that: A guiding scraping plate (14) is arranged on the stirring rod (2), the guiding scraping plate (14) abuts against the bottom wall of the coagulation tank (1), and the medicine-passing body (5) is slidably connected to the guiding scraping plate (14).

10. A wastewater treatment device for a ready-mixed concrete mixing plant according to any one of claims 1-9, characterized in that: The driving source (4) includes a driving motor (41) installed on the coagulation tank (1), a transmission gear (42) coaxially connected to the output shaft of the driving motor (41), and a gear ring (43) sleeved on the stirring rod (2), and the transmission gear (42) meshes with the gear ring (43).

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