Civil engineering construction site wastewater recycling treatment equipment

Abstract

The invention relates to the field of wastewater treatment, in particular to civil engineering construction site wastewater recycling treatment equipment which comprises a box frame and a treatment box installed in the box frame, a dilute sulphuric acid storage box is fixedly installed at the rear end of the treatment box, and a dispersing pipe is arranged above the treatment box; the dispersing pipe is fixedly communicated with the end part of the dilute sulphuric acid storage box, an upper baffle is fixedly mounted on the inner side, close to the middle part, of the dilute sulphuric acid storage box, a lower baffle is mounted at the lower end of the upper baffle in an attached manner, a through hole in the lower baffle and a through hole in the upper baffle are staggered, and two plate rods are symmetrically and fixedly mounted at the lower end of the lower baffle; and the plate rod penetrates out of the front end of the dilute sulphuric acid storage box. The safety of adjusting the pH value of the wastewater is improved, the effect of adjusting the pH value of the wastewater is improved, meanwhile, use is convenient, the interval duration of dilute sulphuric acid discharge can be changed according to needs, and the use requirements are effectively met.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to a wastewater recycling and treatment device for civil engineering construction sites. Background Technology

[0002] In the recycling of wastewater at civil engineering sites, some wastewater with high pH values, such as concrete washing wastewater, must be adjusted to a suitable range before reuse. Direct use of high-pH wastewater can damage the performance of construction materials and affect construction quality. Therefore, adjusting the pH of wastewater is a crucial step in recycling.

[0003] When adjusting the pH value of wastewater, neutralization is often used, such as adding dilute sulfuric acid to the wastewater to react with it and lower the pH value. However, in actual treatment, due to factors such as worker misoperation, it is very easy for excessive amounts of dilute sulfuric acid to be added at one time. The excessive addition of dilute sulfuric acid can cause local water temperature to rise suddenly, water to boil and splash, etc., which poses a significant safety hazard. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of the prior art by proposing a wastewater recycling and treatment device for civil engineering construction sites.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a wastewater recycling and treatment device for civil engineering construction sites, comprising a frame and a treatment box installed inside the frame. A dilute sulfuric acid storage tank is fixedly installed at the rear end of the treatment box. A dispersion pipe is provided above the treatment box and is fixedly connected to the end of the dilute sulfuric acid storage tank. An upper baffle is fixedly installed near the middle of the inner side of the dilute sulfuric acid storage tank. A lower baffle is fitted to the lower end of the upper baffle. The through holes on the lower baffle are misaligned with the through holes on the upper baffle. Two plate rods are symmetrically fixedly installed at the lower end of the lower baffle. The plate rods extend through the front end of the dilute sulfuric acid storage tank and slide with the dilute sulfuric acid storage tank. A push seat is fixedly installed between the front ends of the two plate rods. A push plate spring is wound around the outside of the plate rods. The two ends of the push plate spring are fixed to the push seat and the dilute sulfuric acid storage tank, respectively. A flow-pushing component is installed on the treatment box. Multiple small holes are evenly distributed through the lower end of the dispersion pipe.

[0006] Preferably, the propulsion component includes a second support frame fixedly installed at the front center of the processing box. A second reciprocating screw is installed through the interior of the second support frame. A connecting frame is fixedly installed on one side of the slider of the second reciprocating screw. The end of the connecting frame extends into the interior of the processing box. A propulsion plate is fixedly installed at the end of the connecting frame. Two blade shafts are symmetrically rotated and installed at the front end of the processing box. The blade shafts penetrate the interior of the processing box. Multiple agitating blades are installed in a circular array on the outer surface of the blade shafts. The agitating blades are located inside the processing box.

[0007] Preferably, a servo motor is fixedly installed at the lower front edge of the box frame. The output end of the servo motor is connected to the front end of the two blade shafts by a belt through a pulley. The output end of the servo motor and the screw end of the second reciprocating screw are both coaxially inlaid with bevel gears, and the two bevel gears mesh with each other.

[0008] Preferably, a first support frame is fixedly installed at the upper middle part of the processing box. A first reciprocating screw is installed through the inside of the first support frame. A pusher extends from the side of the slider of the first reciprocating screw. The pusher extends through the side of the first support frame and slides with the first support frame. The end of the pusher is located in front of the push seat. A ratchet assembly is installed at the end of the first reciprocating screw. A push rod gear is coaxially installed at the end of the ratchet assembly. A push rod tooth plate meshes with the side of the push rod gear. The push rod tooth plate is elastically connected to the first support frame.

[0009] Preferably, a push rod bending frame is provided below the push rod tooth plate, and a bracket is fixedly installed on the other side of the slider of the second reciprocating screw. The bracket extends through the side of the second support frame and slides with the second support frame. An H-shaped carrier is slidably installed at the end of the bracket, and the end of the push rod bending frame is fixed to the H-shaped carrier. A locking pin is elastically installed at the end of the bracket. Multiple adjustment holes are linearly arrayed on the side of the H-shaped carrier, and the end of the locking pin is inserted into the interior of one of the adjustment holes.

[0010] Preferably, a gantry is slidably mounted on the outer surface of the locking pin, the end of the gantry is fixed to the frame base, a pin cap is coaxially embedded on the outer surface of the locking pin, and a fixing spring is wound around the outer side of the locking pin. The two ends of the fixing spring are respectively fixed to the inner side of the gantry and the side of the pin cap.

[0011] Preferably, a guide frame is fixedly installed at the front end of the first bearing frame, the push rod tooth plate is slidably installed at the end of the guide frame, a limiting rod is fixedly installed on the side of the push rod tooth plate, the guide frame is slidably installed on the outer surface of the limiting rod, a limiting cap is coaxially embedded at the upper end of the limiting rod, a return spring is wound around the outer side of the limiting rod, and the two ends of the return spring are respectively fixed to the lower end of the guide frame and the limiting rod.

[0012] Preferably, the ratchet assembly includes a control ratchet coaxially fixedly mounted on the end of the first reciprocating screw. A synchronous shaft is coaxially arranged in front of the control ratchet. The push rod gear is coaxially embedded in the front end of the synchronous shaft. A push rod ring is coaxially fixedly mounted on the rear end of the synchronous shaft. A ring seat is rotatably mounted on the outer surface of the push rod ring. The ring seat is fixed to the first bearing frame. A pawl shaft is rotatably mounted through the push rod ring. A control pawl is embedded in the rear end of the pawl shaft. The end of the control pawl abuts against the control ratchet. A torsion spring is provided between the pawl shaft and the push rod ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. By moving the pusher back, the lower baffle can be moved back, so that the through holes on the lower baffle and the upper baffle are temporarily aligned. Then, the pusher spring pushes the lower baffle forward to reset. This cycle is repeated, allowing the dilute sulfuric acid in the dilute sulfuric acid storage tank to be discharged in small amounts through the temporarily aligned through holes into the dispersion tube. The sulfuric acid is then dispersed into the wastewater in the treatment tank through multiple small holes at the lower end of the dispersion tube. This allows the heat generated during the reaction to be evenly absorbed by the wastewater, avoiding sudden rises in water temperature, boiling and splashing, etc., thereby improving the safety of adjusting the pH value of the wastewater.

[0014] 2. The servo motor drives the agitator blades on the two blade shafts to rotate, thus pushing the wastewater in the treatment tank in a circular motion. At the same time, the rotating servo motor also drives the slider on the second reciprocating screw to move up and down continuously. This, in turn, drives the pusher plate to move up and down continuously through the connecting frame, pushing the wastewater in the treatment tank up and down. Under the action of these two thrusts, the pushing amplitude of the wastewater is increased, allowing the wastewater and dilute sulfuric acid to come into uniform contact, thereby enabling the wastewater and dilute sulfuric acid to fully neutralize and react, thus improving the effect of adjusting the pH value of the wastewater.

[0015] 3. During the process of the slide block on the No. 2 reciprocating screw driving the pusher plate to move up and down continuously, pushing the wastewater in the treatment tank up and down, when the slide block on the No. 2 reciprocating screw moves to the end of its stroke, the push rod bend bracket on the slide block of the No. 2 reciprocating screw will push the push rod tooth plate, causing the push rod tooth plate to move up, thereby driving the push rod gear to rotate, which in turn drives the screw of the No. 1 reciprocating screw to rotate, causing the slide block on the No. 1 reciprocating screw to move back and forth continuously. When it moves to the end of its stroke, the pusher claw pushes the pusher seat, causing the pusher seat to move backward, thereby controlling the discharge of a small amount of dilute sulfuric acid. This process does not require additional operation by the operator, which effectively simplifies the use.

[0016] 4. By pulling the locking pin out of the adjusting hole and pulling the H-shaped carrier to slide it at the end of the frame, and then releasing the locking pin so that it engages in another adjusting hole, the height of the push rod bending frame after the slider on the No. 2 reciprocating screw moves to the end of its stroke is changed, thereby changing the upward movement height of the push rod tooth plate. This changes the rotation amplitude of the No. 1 reciprocating screw, thereby adjusting the frequency of the slider on the No. 1 reciprocating screw moving back and forth, that is, adjusting the frequency of the pusher pushing the push seat, and thus changing the interval of dilute sulfuric acid discharge to meet the usage requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a wastewater recycling and treatment device for civil engineering construction sites according to the present invention; Figure 2 This is an internal view of the treatment box of a wastewater recycling and treatment device for civil engineering construction sites according to the present invention. Figure 3 This is an internal view of the dilute sulfuric acid storage tank of a wastewater recycling and treatment device for civil engineering construction sites according to the present invention. Figure 4 This invention relates to a wastewater recycling and treatment device for civil engineering construction sites. Figure 1 Enlarged view of A in the middle; Figure 5 This invention relates to a wastewater recycling and treatment device for civil engineering construction sites. Figure 2 Enlarged view of B in the middle; Figure 6 This is a schematic diagram of the guide frame of a wastewater recycling and treatment equipment for civil engineering construction sites according to the present invention; Figure 7 This is a schematic diagram of the servo motor of a wastewater recycling and treatment device for civil engineering construction sites according to the present invention. Figure 8 This invention relates to a wastewater recycling and treatment device for civil engineering construction sites. Figure 7 Enlarged view of C; Figure 9 This is a schematic diagram of the push rod ring of a wastewater recycling and treatment device for civil engineering construction sites according to the present invention.

[0018] In the diagram: 1. Box frame; 2. Processing box; 3. Connecting frame; 4. Servo motor; 5. Dispersion tube; 6. Dilute sulfuric acid storage tank; 7. Push base; 8. Push claw; 9. First bearing frame; 10. First reciprocating screw; 11. Guide frame; 12. Pusher plate; 13. Agitator blade; 14. Blade shaft; 15. Second reciprocating screw; 16. Bevel gear; 17. Belt; 18. Second bearing frame; 19. Push rod bending frame; 20. H-shaped carrier; 21. Frame base ; 22. Gantry; 23. Locking pin; 24. Fixing spring; 25. Pin cap; 26. Adjustment hole; 27. Limiting cap; 28. Return spring; 29. ​​Limiting rod; 30. Push rod tooth plate; 31. Push rod gear; 32. Synchronous shaft; 33. Push rod ring; 34. Ring seat; 35. Control ratchet; 36. Control pawl; 37. Pawl shaft; 38. Torsion spring; 39. Upper baffle; 40. Lower baffle; 41. Plate rod; 42. Push plate spring. Detailed Implementation

[0019] The following description is intended to disclose the invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art.

[0020] like Figures 1-9The wastewater recycling and treatment equipment shown includes a frame 1 and a treatment tank 2 installed inside the frame 1. The treatment tank 2 serves to hold the wastewater. A dilute sulfuric acid storage tank 6 is fixedly installed at the rear end of the treatment tank 2, serving to hold the dilute sulfuric acid. A dispersion pipe 5 is installed above the treatment tank 2. Multiple small holes at the lower end of the dispersion pipe 5 allow the dilute sulfuric acid to disperse and fall into the wastewater inside the treatment tank 2. The dispersion pipe 5 is fixedly connected to the end of the dilute sulfuric acid storage tank 6. An upper baffle 39 is fixedly installed on the inner side of the dilute sulfuric acid storage tank 6 near the middle. A lower baffle 40 is fitted to the lower end of the upper baffle 39. The through holes on the lower baffle 40 are misaligned with the through holes on the upper baffle 39 to prevent the dilute sulfuric acid from being discharged. Two plate rods 41 are symmetrically fixedly installed at the lower end of the lower baffle 40. The plate rods 41 extend from the front end of the dilute sulfuric acid storage tank 6 and slide against the dilute sulfuric acid storage tank 6. The plate rod 41 serves to support and guide the lower baffle 40. A push seat 7 is fixedly installed between the front ends of the two plate rods 41. A push plate spring 42 is wound around the outside of the plate rods 41. The two ends of the push plate spring 42 are fixed to the push seat 7 and the dilute sulfuric acid storage tank 6, respectively. The backward movement of the push seat 7 can drive the lower baffle 40 to move backward, so that the through hole on the lower baffle 40 and the through hole on the upper baffle 39 are temporarily aligned. Then the push plate spring 42 pushes the lower baffle 40 forward to reset. This cycle allows the dilute sulfuric acid in the dilute sulfuric acid storage tank 6 to be discharged in a small amount through the temporarily aligned through holes into the dispersion tube 5. The lower end of the dispersion tube 5 is evenly distributed with multiple small holes. The sulfuric acid is dispersed into the wastewater in the treatment tank 2 through the multiple small holes at the lower end of the dispersion tube 5, so that the heat generated during the reaction can be evenly absorbed by the wastewater, so as to avoid the phenomenon of sudden rise in water temperature, boiling and splashing. A flow propulsion component is installed on the treatment tank 2.

[0021] The propulsion component includes a second support frame 18 fixedly installed at the front center of the treatment tank 2. A second reciprocating screw 15 is installed through the interior of the second support frame 18, which serves to support the second reciprocating screw 15. A connecting frame 3 is fixedly installed on one side of the slider of the second reciprocating screw 15. The end of the connecting frame 3 extends into the interior of the treatment tank 2, and a propulsion plate 12 is fixedly installed at the end of the connecting frame 3, which serves to connect the propulsion plate 12. Two blade shafts 14 are symmetrically rotated at the front end of the treatment tank 2. The blade shafts 14 penetrate the interior of the treatment tank 2. Multiple agitator blades 13 are installed in a ring array on the outer surface of the blade shafts 14. The propulsion plate 12 can push the wastewater in the treatment tank 2 up and down, and the agitator blades 13 can push the wastewater in the treatment tank 2 in a ring. The agitator blades 13 are located inside the treatment tank 2.

[0022] A servo motor 4 is fixedly installed at the lower front edge of the frame 1. The output end of the servo motor 4 is connected to the front end of the two blade shafts 14 by a belt 17 through a pulley. The belt 17 plays a transmission role. The output end of the servo motor 4 and the screw end of the second reciprocating screw 15 are both coaxially inlaid with bevel gears 16. The two bevel gears 16 mesh with each other and play a transmission role.

[0023] A first support frame 9 is fixedly installed at the upper center of the processing box 2. A first reciprocating screw 10 is installed through the inside of the first support frame 9. The first support frame 9 serves to support the first reciprocating screw 10. Both the first reciprocating screw 10 and the second reciprocating screw 15 drive the slider to reciprocate through the rotation of the screw. Since the above-mentioned use of reciprocating screws for reciprocating movement is existing technology and has been widely used, it is not described in detail here. A pusher 8 extends from the side of the slider of the first reciprocating screw 10. The pusher 8 extends from... A pusher 8 slides through the side of the first bearing frame 9. The end of the pusher 8 is located in front of the push seat 7. The pusher 8 pushes the push seat 7. A ratchet assembly is installed at the end of the first reciprocating screw 10. A push rod gear 31 is coaxially installed at the end of the ratchet assembly. A push rod tooth plate 30 meshes with the side of the push rod gear 31. The cooperation between the push rod gear 31 and the push rod tooth plate 30 allows the screw of the first reciprocating screw 10 to rotate. The push rod tooth plate 30 is elastically connected to the first bearing frame 9.

[0024] A push rod bend bracket 19 is provided below the push rod tooth plate 30, which pushes the push rod tooth plate 30. A bracket 21 is fixedly installed on the other side of the slider of the second reciprocating screw 15. The bracket 21 extends through the side of the second support frame 18 and slides with the second support frame 18. An H-shaped carrier 20 is slidably installed at the end of the bracket 21, which supports the H-shaped carrier 20. The end of the push rod bend bracket 19 is fixed to the H-shaped carrier 20. A locking pin 23 is elastically installed at the end of the bracket 21. Multiple adjustment holes 26 are linearly arrayed on the side of the H-shaped carrier 20, and the end of the locking pin 23 is inserted into one of them. Inside the adjustment hole 26, the locking pin 23 is pulled out from the adjustment hole 26, and the H-shaped carrier 20 is pulled to slide at the end of the bracket 21. Then the locking pin 23 is released and inserted into another adjustment hole 26. This changes the height of the push rod bending bracket 19 after the slider on the second reciprocating screw 15 moves to the end of its stroke, thereby changing the upward height of the push rod tooth plate 30. This changes the screw rotation amplitude of the first reciprocating screw 10, thereby adjusting the frequency of the slider on the first reciprocating screw 10 moving back and forth, that is, adjusting the frequency of the pusher 8 pushing the push seat 7, thereby changing the interval of dilute sulfuric acid discharge to meet the usage requirements.

[0025] A gantry 22 is slidably mounted on the outer surface of the locking pin 23. The end of the gantry 22 is fixed to the bracket 21. The gantry 22 serves to guide the locking pin 23. A pin cap 25 is coaxially embedded on the outer surface of the locking pin 23. A fixing spring 24 is wound around the outer side of the locking pin 23. The two ends of the fixing spring 24 are fixed to the inner side of the gantry 22 and the side of the pin cap 25, respectively. The fixing spring 24 can push the pin cap 25, so that the locking pin 23 is firmly inserted into the adjusting hole 26.

[0026] A guide frame 11 is fixedly installed at the front end of the first support frame 9. The push rod tooth plate 30 is slidably installed at the end of the guide frame 11. The guide frame 11 serves to guide the push rod tooth plate 30. A limiting rod 29 is fixedly installed on the side of the push rod tooth plate 30. The guide frame 11 is slidably installed on the outer surface of the limiting rod 29. A limiting cap 27 is coaxially embedded at the upper end of the limiting rod 29. The limiting cap 27 serves to position the push rod tooth plate 30 at its reset position. A reset spring 28 is wound around the outside of the limiting rod 29. The limiting rod 29 serves to prevent the reset spring 28 from bending. The two ends of the reset spring 28 are fixed to the guide frame 11 and the lower end of the limiting rod 29, respectively. The reset spring 28 serves to reset the upward-moving push rod tooth plate 30.

[0027] The ratchet assembly includes a control ratchet 35 coaxially fixedly mounted on the end of the first reciprocating screw 10. A synchronous shaft 32 is coaxially arranged in front of the control ratchet 35, which enables the push rod gear 31 and the push rod ring 33 to rotate synchronously. The push rod gear 31 is coaxially embedded in the front end of the synchronous shaft 32. The push rod ring 33 is coaxially fixedly mounted on the rear end of the synchronous shaft 32. A ring seat 34 is rotatably mounted on the outer surface of the push rod ring 33, which supports the push rod ring 33. The ring seat 34 is fixed to the first support frame 9. A pawl shaft 37 is rotatably mounted through the push rod ring 33. A control pawl 36 is embedded in the rear end of the pawl shaft 37, and the end of the control pawl 36 abuts against the control pawl. A torsion spring 38 is provided between the pawl shaft 37 and the push rod ring 33 on the ratchet 35. The torsion spring 38 can move the pawl shaft 37, so that the end of the control pawl 36 is always in contact with the control ratchet 35. When the push rod tooth plate 30 moves upward and drives the push rod gear 31 to rotate, the control pawl 36 will push against the control ratchet 35, so that the rotating push rod ring 33 and the control ratchet 35 rotate synchronously, thereby driving the screw of the first reciprocating screw 10 to rotate. When the push rod tooth plate 30 moves downward and resets, the push rod gear 31 rotates in the opposite direction. At this time, the control pawl 36 will slide on the control ratchet 35, so that the control ratchet 35 will not rotate with it, thus keeping the screw of the first reciprocating screw 10 stationary, and thus reciprocating.

[0028] When adjusting the pH value of the wastewater, the servo motor 4 drives the agitator blades 13 on the two blade shafts 14 to rotate, thus pushing the wastewater in the treatment tank 2 in a circular motion. Simultaneously, the rotating servo motor 4 also drives the slider on the second reciprocating screw 15 to move up and down continuously, which in turn drives the pusher plate 12 to move up and down continuously via the connecting frame 3, further pushing the wastewater in the treatment tank 2. During this process, when the slider on the second reciprocating screw 15 reaches the end of its stroke, the pusher bracket 19 on the slider pushes the pusher tooth plate 30, causing the pusher tooth plate 30 to move upwards, thereby driving the pusher gear 31 to rotate. This, in turn, drives the screw of the first reciprocating screw 10 to rotate, causing the slider on the first reciprocating screw 10 to move back and forth continuously. When it reaches the end of its stroke, the pusher claw 8... Pushing the pusher 7 causes it to move backward. This backward movement causes the lower baffle 40 to move backward, briefly aligning the through holes on the lower baffle 40 and the upper baffle 39. Then, the pusher spring 42 pushes the lower baffle 40 forward to reset. This cycle repeats, allowing the dilute sulfuric acid in the dilute sulfuric acid storage tank 6 to be discharged in small amounts through the temporarily aligned through holes into the dispersion tube 5. The sulfuric acid is then dispersed into the wastewater in the treatment tank 2 through multiple small holes at the lower end of the dispersion tube 5. This allows the heat generated during the reaction to be evenly absorbed by the wastewater, preventing sudden temperature rises, boiling, and splashing. The dilute sulfuric acid entering the wastewater will come into even contact with the wastewater under the combined action of the annular and vertical pushing forces, allowing the wastewater and dilute sulfuric acid to fully neutralize each other, thereby reducing the pH value of the wastewater and enabling its recycling.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention. The scope of protection claimed by the appended claims and their equivalents is defined.

Claims

1. A wastewater recycling and treatment device for civil engineering construction sites, comprising a frame (1) and a treatment box (2) installed inside the frame (1), characterized in that: A dilute sulfuric acid storage tank (6) is fixedly installed at the rear end of the processing tank (2). A dispersion tube (5) is provided above the processing tank (2). The dispersion tube (5) is fixedly connected to the end of the dilute sulfuric acid storage tank (6). An upper baffle (39) is fixedly installed on the inner side of the dilute sulfuric acid storage tank (6) near the middle. A lower baffle (40) is fitted to the lower end of the upper baffle (39). The through holes on the lower baffle (40) are misaligned with the through holes on the upper baffle (39). Two rods are symmetrically fixedly installed at the lower end of the lower baffle (40). A plate rod (41) extends through the front end of a dilute sulfuric acid storage tank (6). The plate rod (41) slides into the dilute sulfuric acid storage tank (6). A push seat (7) is fixedly installed between the front ends of the two plate rods (41). A push plate spring (42) is wound around the outside of the plate rod (41). The two ends of the push plate spring (42) are fixed to the push seat (7) and the dilute sulfuric acid storage tank (6) respectively. A flow-pushing component is installed on the processing tank (2). Multiple small holes are evenly distributed through the lower end of the dispersion tube (5).

2. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 1, characterized in that: The propulsion component includes a second support frame (18) fixedly installed in the middle of the front end of the processing box (2). A second reciprocating screw (15) is installed through the interior of the second support frame (18). A connecting frame (3) is fixedly installed on one side of the slider of the second reciprocating screw (15). The end of the connecting frame (3) extends into the interior of the processing box (2). A propulsion plate (12) is fixedly installed at the end of the connecting frame (3). Two blade shafts (14) are symmetrically rotated and installed at the front end of the processing box (2). The blade shafts (14) penetrate the interior of the processing box (2). Multiple stirring blades (13) are installed in a ring array on the outer surface of the blade shafts (14). The stirring blades (13) are located inside the processing box (2).

3. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 2, characterized in that: A servo motor (4) is fixedly installed at the lower front edge of the frame (1). The output end of the servo motor (4) is connected to the front end of the two blade shafts (14) by a belt (17) through a pulley. The output end of the servo motor (4) and the screw end of the second reciprocating screw (15) are both coaxially inlaid with bevel gears (16), and the two bevel gears (16) mesh with each other.

4. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 2, characterized in that: A first bearing frame (9) is fixedly installed at the upper middle part of the processing box (2). A first reciprocating screw (10) is installed through the inside of the first bearing frame (9). A pusher (8) extends from the side of the slider of the first reciprocating screw (10). The pusher (8) extends through the side of the first bearing frame (9). The pusher (8) slides with the first bearing frame (9). The end of the pusher (8) is located in front of the push seat (7). A ratchet assembly is installed at the end of the first reciprocating screw (10). A push rod gear (31) is coaxially installed at the end of the ratchet assembly. A push rod tooth plate (30) meshes with the side of the push rod gear (31). The push rod tooth plate (30) is elastically connected to the first bearing frame (9).

5. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 4, characterized in that: A push rod bend frame (19) is provided below the push rod tooth plate (30). A bracket (21) is fixedly installed on the other side of the slider of the second reciprocating screw (15). The bracket (21) extends through the side of the second support frame (18). The bracket (21) is slidably engaged with the second support frame (18). An H-shaped carrier (20) is slidably installed at the end of the bracket (21). The end of the push rod bend frame (19) is fixed to the H-shaped carrier (20). A locking pin (23) is elastically installed at the end of the bracket (21). Multiple adjustment holes (26) are linearly arrayed on the side of the H-shaped carrier (20). The end of the locking pin (23) is inserted into the interior of one of the adjustment holes (26).

6. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 5, characterized in that: A gantry (22) is slidably mounted on the outer surface of the locking pin (23). The end of the gantry (22) is fixed to the frame (21). A pin cap (25) is coaxially embedded on the outer surface of the locking pin (23). A fixing spring (24) is wound around the outer side of the locking pin (23). The two ends of the fixing spring (24) are respectively fixed to the inner side of the gantry (22) and the side of the pin cap (25).

7. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 4, characterized in that: A guide frame (11) is fixedly installed at the front end of the first bearing frame (9). The push rod tooth plate (30) is slidably installed at the end of the guide frame (11). A limiting rod (29) is fixedly installed on the side of the push rod tooth plate (30). The guide frame (11) is slidably installed on the outer surface of the limiting rod (29). A limiting cap (27) is coaxially embedded at the upper end of the limiting rod (29). A return spring (28) is wound around the outside of the limiting rod (29). The two ends of the return spring (28) are fixed to the lower ends of the guide frame (11) and the limiting rod (29), respectively.

8. The wastewater recycling and treatment equipment for civil engineering construction sites according to claim 4, characterized in that: The ratchet assembly includes a control ratchet (35) coaxially fixedly mounted on the end of the first reciprocating screw (10). A synchronous shaft (32) is coaxially arranged in front of the control ratchet (35). The push rod gear (31) is coaxially embedded in the front end of the synchronous shaft (32). A push rod ring (33) is coaxially fixedly mounted on the rear end of the synchronous shaft (32). A ring seat (34) is rotatably mounted on the outer surface of the push rod ring (33). The ring seat (34) is fixed to the first support frame (9). A pawl shaft (37) is rotatably mounted through the push rod ring (33). A control pawl (36) is embedded in the rear end of the pawl shaft (37). The end of the control pawl (36) abuts against the control ratchet (35). A torsion spring (38) is provided between the pawl shaft (37) and the push rod ring (33).

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