Wastewater treatment device and method

Abstract

The invention relates to the technical field of wastewater treatment, in particular to a wastewater treatment device and method.The wastewater treatment device mainly comprises a treatment tank and further comprises a stirring mechanism, the stirring mechanism is arranged in the treatment tank and comprises a stirring rod and liquid spraying mechanisms, the stirring rod and the liquid spraying mechanisms are located in the treatment tank, and the liquid spraying mechanisms are arranged on the two sides of the stirring rod. A limiting block and a moving block are pushed to move through a second elastic piece, the moving block drives an adjusting rod, a T-shaped block, a connecting plate and a piston to move under the action of an inclined groove and a T-shaped groove, so that a water inlet pipe and a water suction head suck mixed liquid into a liquid suction cavity, and when rolling wheels extrude a semicircular plate, the semicircular plate pushes the moving block to move in the opposite direction through the connecting rod; the piston is driven to spray the mixed liquid in the liquid suction cavity through the water outlet pipe and the two spray heads, and the two spray heads are positioned at the lower part and the upper part in the treatment tank, so that the mixed liquid in the treatment tank is further turned and mixed, chlorine water and wastewater can be fully and uniformly mixed, and the sterilization efficiency and quality of the chlorine water are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment, and in particular to a wastewater treatment device and method. Background Art

[0002] With the acceleration of urbanization and the continuous improvement of industrialization, the protection and management of water resources has become a major global issue. The effective treatment of domestic sewage and industrial wastewater is directly related to the improvement of environmental quality and the improvement of residents' quality of life. When wastewater is discharged, it needs to be treated by wastewater treatment equipment. The bacteria and viruses inside the wastewater need to be treated with chlorine water to make the wastewater meet the discharge standards or be recycled.

[0003] Existing wastewater treatment devices usually use chlorine water for sterilization by mixing chlorine water with the wastewater to be treated. However, most equipment uses a simple stirring rod to promote the mixing between the two. Although this method can increase the contact opportunities between the liquids to a certain extent, it is often difficult to achieve comprehensive and thorough uniform distribution by simply stirring with a stirring rod, thus affecting the sterilization efficiency and quality of the chlorine water. Summary of the invention

[0004] The object of the present invention is to provide a wastewater treatment device and method to solve the problems raised by the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A wastewater treatment device comprises: a treatment tank, a support leg is fixedly installed on the bottom surface of the treatment tank, a water inlet and a drug adding port are arranged on the top surface of the treatment tank, a drainage port is arranged on the bottom surface of the treatment tank, and further comprises: A stirring mechanism is arranged inside the treatment tank, and includes a stirring rod located inside the treatment tank, a movable sleeve is arranged on one side of the stirring rod, a roller is arranged on one side of the movable sleeve, and a semi-cylinder is fixedly installed on the inner wall of the treatment tank. The stirring mechanism is used to stir the wastewater and the liquid medicine evenly; The liquid spraying mechanism is arranged on both sides of the stirring rod. The liquid spraying mechanism includes a piston located inside the processing tank. Water outlet pipes and nozzles are arranged on both sides of the piston. The liquid spraying mechanism is used to absorb and spray the liquid inside the processing tank.

[0006] Preferably, a motor is fixedly mounted on the top surface of the processing tank, a rotating shaft is fixedly mounted on the output end of the motor, the lower end of the rotating shaft rotates through the first bearing seat to pass through the top surface of the processing tank and extends to the inside of the processing tank, and two fixing rods are fixedly mounted on the outer wall of the rotating shaft.

[0007] Preferably, two movable sleeves are provided, the inner walls of the two movable sleeves are respectively slidably connected to the outer walls of the two fixed rods, the outer walls of the two fixed rods are respectively slidably sleeved with elastic members one, the two ends of the two elastic members one are respectively fixedly connected to the side faces of the two movable sleeves and the outer wall of the rotating shaft, the outer walls of the two fixed rods are respectively fixedly installed with fixed sleeves, and the sides of the two fixed sleeves close to each other are respectively in contact with the sides far away from the two movable sleeves.

[0008] Preferably, the two movable sleeves are respectively hinged with support rods on both sides, and multiple stirring rods are provided, one end of the multiple stirring rods is respectively hinged to the outer wall of the rotating shaft, and the side surfaces of one end of the multiple stirring rods are respectively hinged to one end of the multiple support rods.

[0009] Preferably, two movable sleeves are fixedly installed with two movable bars on the sides away from each other, and the other ends of the multiple movable bars slide through the two fixed sleeves close to each other and extend to the other side of the fixed sleeves. A connecting shaft is rotatably installed on the side of one end of the multiple movable bars. Two rollers and two semi-cylinders are provided, and the inner walls of the two rollers are fixedly connected to the outer walls of the two connecting shafts, and the outer walls of the two rollers are rollingly connected to the outer walls of the two semi-cylinders.

[0010] Preferably, two liquid suction chambers are opened inside the semi-cylinder, two pistons are provided, the outer walls of the two pistons are slidingly connected to the inner walls of the two liquid suction chambers respectively, and two water outlet pipes and nozzles are provided. One end of the two water outlet pipes is fixed through the sides of both ends of the semi-cylinder and extends to the inside of the two liquid suction chambers, and the other end of the two water outlet pipes is fixedly connected to one end of the two nozzles respectively.

[0011] Preferably, water inlet pipes are slidably installed through the inner walls of the two liquid suction chambers, and water suction heads are fixedly installed at the other ends of the two water inlet pipes. One-way valves are installed on the water inlet pipes and the water outlet pipes. A movable groove is opened inside the semi-cylinder, and a movable block is slidably installed on the inner wall of the movable groove.

[0012] Preferably, limit blocks are fixedly installed on both side surfaces of the moving block, two limit grooves are provided on the inner wall of the moving groove, the inner walls of the two limit grooves are slidingly connected to the outer walls of the two limit blocks respectively, and two elastic parts are fixedly installed on the side surfaces of the two limit blocks respectively, and the other ends of the two elastic parts are fixedly connected to the inner walls of the two limit grooves respectively.

[0013] Preferably, a groove body is opened on the outer wall of the semi-cylinder, and two connecting rods are fixedly installed on the side of the moving block. The other ends of the two connecting rods slide through the inner wall of the moving groove and extend into the interior of the groove body. A semicircular plate is fixedly installed on the other end of the two connecting rods. The side surface of the semicircular plate is slidably connected to the inner wall of the groove body, and the outer wall of the semicircular plate is slidably connected to the outer wall of the roller.

[0014] Preferably, two T-slots are respectively provided on the inner walls on both sides of the movable groove, T-blocks are respectively slidably installed on the inner walls of the multiple T-slots, connecting plates are respectively fixedly installed on the sides of the multiple T-blocks, the other ends of the multiple connecting plates are respectively fixedly connected to the two piston sides, two adjusting rods are fixedly installed on the sides of the multiple T-slots, two oblique grooves are provided on the sides of the movable block, and the outer walls of the two adjusting rods are respectively slidably connected to the inner walls of the two oblique grooves.

[0015] A method for treating wastewater comprises the following steps: S1: Add wastewater and chlorine water into the treatment tank from the water inlet and the dosing port; S2: Stirring the mixed liquid of wastewater and chlorine water in the treatment tank by a stirring rod so that the wastewater and chlorine water are fully mixed; S3: The mixed liquid is then sucked in by the movement of the piston, and then the mixed liquid is sprayed out from the upper and lower sides of the inside of the treatment tank through the outlet pipe from the nozzle, so that the liquid is mixed more evenly; S4: After sterilization is completed, the liquid is discharged from the drain outlet.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses the second elastic member to push the limit block and the moving block to move. Under the action of the inclined groove and the T-shaped groove, the moving block drives the adjusting rod, the T-shaped block, the connecting plate and the piston to move. When the piston moves, the mixed liquid is sucked from the water inlet pipe and the water suction head into the liquid suction chamber. When the roller squeezes the semicircular plate, the semicircular plate pushes the moving block to move in the opposite direction through the connecting rod, thereby driving the piston to spray the mixed liquid inside the liquid suction chamber through the water outlet pipe and the two nozzles. Since the two nozzles are located below and above the inside of the treatment tank, the mixed liquid inside the treatment tank is further rolled and mixed, so that the chlorine water and the wastewater can be fully and evenly mixed, thereby improving the sterilization efficiency and quality of the chlorine water. By turning on the motor, the rotating shaft, the fixed rod and the stirring rod are driven to rotate, the stirring rod stirs the mixed liquid, the fixed rod drives the moving bar and the roller to rotate, the roller rotates to the semi-cylinder and squeezes the outer wall of the semi-cylinder, the roller drives the moving bar to push the moving sleeve to move, the moving sleeve squeezes the elastic part, and the moving sleeve drives the support rod and the stirring rod to rotate a certain angle. When the roller is away from the semi-cylinder, the elastic part pushes the moving sleeve to return to its original position, thereby driving the stirring rod to return to its original position, and the stirring rod performs arc reciprocating rotation, so as to fully stir the mixed liquid, so that the chlorine water and the wastewater are mixed more comprehensively and evenly, thereby improving the efficiency and quality of sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the processing tank of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the stirring rod of the present invention; Figure 4 It is an exploded view of the three-dimensional structure of the fixing sleeve of the present invention; Figure 5 It is an exploded view of the three-dimensional structure of the moving block of the present invention; Figure 6 It is a front cross-sectional view of the semi-cylindrical three-dimensional structure of the present invention; Figure 7 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 8 It is a side cross-sectional view of the semi-cylindrical three-dimensional structure of the present invention; Fig. 9 It is a top cross-sectional view of the semi-cylindrical three-dimensional structure of the present invention.

[0018] In the figure: 1. Treatment tank; 101. Support legs; 102. Water inlet; 103. Dosing port; 104. Drainage port; 2. stirring mechanism; 201. motor; 202. rotating shaft; 203. fixed rod; 204. moving sleeve; 205. elastic member 1; 206. support rod; 207. stirring rod; 208. fixed sleeve; 209. moving bar; 210. connecting shaft; 211. roller; 212. semi-cylinder; 3. Liquid spraying mechanism; 301. Liquid suction chamber; 302. Piston; 303. Water outlet pipe; 304. Spray head; 305. Water inlet pipe; 306. Water suction head; 307. Moving groove; 308. Moving block; 309. Limiting groove; 310. Limiting block; 311. Groove body; 312. Connecting rod; 313. Semicircular plate; 314. T-shaped groove; 315. Connecting plate; 316. T-shaped block; 317. Adjusting rod; 318. Inclined groove; 319. Elastic member 2. DETAILED DESCRIPTION

[0019] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0020] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0021] like Figure 1-Figure 9As shown, the present application provides a wastewater treatment device, including: a treatment tank 1, a support leg 101 is fixedly installed on the bottom surface of the treatment tank 1, a water inlet 102 and a dosing port 103 are arranged on the top surface of the treatment tank 1, a drain port 104 is arranged on the bottom surface of the treatment tank 1, and further includes: A stirring mechanism 2, which is arranged inside the treatment tank 1, comprises a stirring rod 207 located inside the treatment tank 1, a movable sleeve 204 is arranged on one side of the stirring rod 207, a roller 211 is arranged on one side of the movable sleeve 204, a semi-cylinder 212 is fixedly installed on the inner wall of the treatment tank 1, and the stirring mechanism 2 is used to stir the wastewater and the liquid medicine evenly; Specifically, Figure 1-Figure 4 As shown, a motor 201 is fixedly installed on the top surface of the processing tank 1, and a rotating shaft 202 is fixedly installed on the output end of the motor 201. The lower end of the rotating shaft 202 rotates through the first bearing seat to penetrate the top surface of the processing tank 1 and extend to the inside of the processing tank 1. Two fixing rods 203 are fixedly installed on the outer wall of the rotating shaft 202.

[0022] In this embodiment, the motor 201 is provided to drive the rotating shaft 202 to rotate, and the rotating shaft 202 drives the fixing rod 203 to rotate.

[0023] Specifically, Figure 1-Figure 4 As shown, two movable sleeves 204 are provided, and the inner walls of the two movable sleeves 204 are respectively slidably connected to the outer walls of the two fixed rods 203, and the outer walls of the two fixed rods 203 are respectively slidably sleeved with elastic members 205, and the two ends of the two elastic members 205 are respectively fixedly connected to the side surfaces of the two movable sleeves 204 and the outer wall of the rotating shaft 202, and the outer walls of the two fixed rods 203 are respectively fixedly installed with fixed sleeves 208, and the two fixed sleeves 208 are respectively in contact with the sides far away from the two movable sleeves 204 at the sides close to each other.

[0024] In this embodiment, an elastic member 205 is provided to apply elastic force to the movable sleeve 204 , and a fixed sleeve 208 is provided to limit the movable sleeve 204 .

[0025] Specifically, Figure 1-Figure 4 As shown, the two sides of the two movable sleeves 204 are respectively hinged with support rods 206, and multiple stirring rods 207 are provided. One end of the multiple stirring rods 207 is respectively hinged to the outer wall of the rotating shaft 202, and the side surfaces of one end of the multiple stirring rods 207 are respectively hinged to one end of the multiple support rods 206.

[0026] In this embodiment, when the movable sleeve 204 moves, the support rod 206 is driven to move, and the support rod 206 drives one end of the stirring rod 207 to swing back and forth in an arc shape, thereby improving the stirring effect of the mixed liquid.

[0027] Specifically, Figure 1-Figure 4As shown, two movable sleeves 204 are fixedly installed with two movable bars 209 on the sides away from each other, and the other ends of the multiple movable bars 209 slide through the two fixed sleeves 208 close to each other and extend to the other side of the fixed sleeves 208. A connecting shaft 210 is rotatably installed on the side of one end of the multiple movable bars 209. Two rollers 211 and two semi-cylinders 212 are each provided. The inner walls of the two rollers 211 are fixedly connected to the outer walls of the two connecting shafts 210, and the outer walls of the two rollers 211 are rollingly connected to the outer walls of the two semi-cylinders 212.

[0028] In this embodiment, when the roller 211 is in contact and squeezed with the semi-cylinder 212 , the roller 211 pushes the moving sleeve 204 through the moving bar 209 , and the fixed sleeve 208 limits the moving bar 209 .

[0029] The liquid spraying mechanism 3 is arranged on both sides of the stirring rod 207. The liquid spraying mechanism 3 includes a piston 302 located inside the processing tank 1. Water outlet pipes 303 and nozzles 304 are arranged on both sides of the piston 302. The liquid spraying mechanism 3 is used to absorb and spray the liquid inside the processing tank 1.

[0030] Specifically, Figure 5-Figure 9 As shown, two liquid suction chambers 301 are opened inside the semi-cylinder 212, two pistons 302 are provided, and the outer walls of the two pistons 302 are slidingly connected to the inner walls of the two liquid suction chambers 301 respectively. Two water outlet pipes 303 and two nozzles 304 are provided, and one end of the two water outlet pipes 303 is fixedly passed through the side surfaces at both ends of the semi-cylinder 212 and extends to the inside of the two liquid suction chambers 301, and the other ends of the two water outlet pipes 303 are fixedly connected to one end of the two nozzles 304 respectively.

[0031] In this embodiment, when the piston 302 moves, the liquid in the liquid suction chamber 301 is sprayed out from the nozzle 304 through the outlet pipe 303, so that the liquid rolls and mixes evenly.

[0032] Specifically, Figure 5-Figure 9 As shown, water inlet pipes 305 are slidably installed on the inner walls of the two liquid suction chambers 301, and water suction heads 306 are fixedly installed on the other ends of the two water inlet pipes 305. One-way valves are installed on the water inlet pipes 305 and the water outlet pipes 303. A movable groove 307 is opened inside the semi-cylinder 212, and a movable block 308 is slidably installed on the inner wall of the movable groove 307.

[0033] In this embodiment, by providing the water inlet pipe 305 , the water suction head 306 and the one-way valve, water can only be sucked from the water inlet pipe 305 and discharged from the water outlet pipe 303 .

[0034] Specifically, Figure 5-Figure 9As shown, limit blocks 310 are fixedly installed on both sides of the moving block 308, and two limit grooves 309 are opened on the inner wall of the moving groove 307. The inner walls of the two limit grooves 309 are slidingly connected to the outer walls of the two limit blocks 310 respectively, and elastic parts 319 are fixedly installed on the sides of the two limit blocks 310 respectively, and the other ends of the two elastic parts 319 are fixedly connected to the inner walls of the two limit grooves 309 respectively.

[0035] In this embodiment: the limiting groove 309 is set to limit the limiting block 310, thereby limiting the moving block 308, so that the movement of the moving block 308 is more stable, and the elastic member 2 319 is set to apply a thrust to the limiting block 310, and the elastic force of the elastic member 2 319 is smaller than the elastic force of the elastic member 1 205.

[0036] Specifically, Figure 5-Figure 9 As shown, a groove body 311 is opened on the outer wall of the semi-cylinder 212, and two connecting rods 312 are fixedly installed on the side of the moving block 308. The other ends of the two connecting rods 312 slide through the inner wall of the moving groove 307 and extend to the inside of the groove body 311. A semicircular plate 313 is fixedly installed on the other end of the two connecting rods 312. The side of the semicircular plate 313 is slidably connected to the inner wall of the groove body 311, and the outer wall of the semicircular plate 313 is slidably connected to the outer wall of the roller 211.

[0037] In this embodiment, when the semicircular plate 313 is squeezed and moved by the roller 211, the connecting rod 312 and the moving block 308 are driven to move.

[0038] Specifically, Figure 5-Figure 9 As shown, two T-slots 314 are respectively provided on the inner walls on both sides of the movable groove 307, and T-blocks 316 are respectively slidably installed on the inner walls of the multiple T-slots 314, and connecting plates 315 are respectively fixedly installed on the sides of the multiple T-blocks 316, and the other ends of the multiple connecting plates 315 are respectively fixedly connected to the sides of the two pistons 302, and two adjusting rods 317 are fixedly installed on the sides of the multiple T-slots 314. Two inclined grooves 318 are provided on the side of the movable block 308, and the outer walls of the two adjusting rods 317 are respectively slidably connected to the inner walls of the two inclined grooves 318.

[0039] In this embodiment, when the movable block 308 moves, the inclined groove 318 and the T-shaped groove 314 drive the adjusting rod 317, the T-shaped block 316, the connecting plate 315 and the piston 302 to move, thereby adjusting the position of the piston 302 so that the liquid suction chamber 301 absorbs and discharges water.

[0040] A method for treating wastewater comprises the following steps: S1: Add wastewater and chlorine water into the treatment tank 1 from the water inlet 102 and the dosing port 103; S2: stirring the wastewater and chlorine water mixture in the treatment tank 1 by means of the stirring rod 207, so that the wastewater and chlorine water are fully mixed; S3: The piston 302 is then moved to absorb the mixed liquid, and then the mixed liquid is sprayed from the upper and lower sides of the inside of the treatment tank 1 through the outlet pipe 303 from the nozzle 304, so that the liquid is mixed more evenly; S4: After the sterilization is completed, the liquid is discharged from the drain port 104.

[0041] The specific scheme is as follows: wastewater and chlorine water are added from the water inlet 102 and the dosing port 103, the motor 201 is turned on, the rotating shaft 202, the fixed rod 203 and the stirring rod 207 are driven to rotate, the stirring rod 207 stirs the mixed liquid, the fixed rod 203 drives the moving bar 209 and the roller 211 to rotate, the roller 211 rotates to the semi-cylinder 212 and squeezes the outer wall of the semi-cylinder 212, the roller 211 drives the moving bar 209 to push the moving sleeve 204 to move, and the moving sleeve 204 is driven by the moving bar 209. 04 squeezes the elastic member 205, and at the same time, the movable sleeve 204 drives the support rod 206 and the stirring rod 207 to rotate a certain angle. When the roller 211 is away from the semi-cylinder 212, the elastic member 205 pushes the movable sleeve 204 to return to its original position, thereby driving the stirring rod 207 to return to its original position. The stirring rod 207 performs arc reciprocating rotation, thereby fully stirring the mixed liquid, making the chlorine water and the wastewater mixed more comprehensively and evenly, improving the efficiency and quality of sterilization, and when the roller 211 is half-cylinder 212, the movable sleeve 204 is pushed back and forth by the elastic member 204 to return to its original position. When the circular plate 313 is squeezed, the semicircular plate 313 pushes the moving block 308 to move in the opposite direction through the connecting rod 312, thereby driving the piston 302 to spray the mixed liquid in the liquid suction chamber 301 through the water outlet pipe 303 and the two nozzles 304. Since the two nozzles 304 are located below and above the inside of the treatment tank 1, the mixed liquid in the treatment tank 1 is further rolled and mixed, so that the chlorine water and the wastewater can be fully mixed and evenly mixed, thereby improving the sterilization efficiency and quality of the chlorine water. When the piston 302 moves away from the semicircular plate 313, the elastic member 319 pushes the limit block 310 and the moving block 308 to move. Under the action of the inclined groove 318 and the T-shaped groove 314, the moving block 308 drives the adjusting rod 317, the T-shaped block 316, the connecting plate 315 and the piston 302 to move. When the piston 302 moves, the mixed liquid is sucked from the water inlet pipe 305 and the water suction head 306 into the liquid suction chamber 301, and water suction and water spraying are repeated. After the sterilization is completed, the liquid is discharged through the drain port 104.

[0042] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary; within the scope of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0043] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A wastewater treatment device, comprising: A treatment tank (1), wherein a support leg (101) is fixedly mounted on the bottom surface of the treatment tank (1), a water inlet (102) and a drug addition port (103) are arranged on the top surface of the treatment tank (1), and a drainage port (104) is arranged on the bottom surface of the treatment tank (1), characterized in that it further comprises: A stirring mechanism (2), the stirring mechanism (2) being arranged inside the treatment tank (1), the stirring mechanism (2) comprising a stirring rod (207) located inside the treatment tank (1), a moving sleeve (204) being arranged on one side of the stirring rod (207), a roller (211) being arranged on one side of the moving sleeve (204), a semi-cylinder (212) being fixedly mounted on the inner wall of the treatment tank (1), the stirring mechanism (2) being used to stir the wastewater and the liquid medicine uniformly; A liquid spraying mechanism (3), the liquid spraying mechanism (3) being arranged on both sides of the stirring rod (207), the liquid spraying mechanism (3) comprising a piston (302) located inside the processing tank (1), water outlet pipes (303) and spray heads (304) being arranged on both sides of the piston (302), the liquid spraying mechanism (3) being used to absorb and spray the liquid inside the processing tank (1).

2. A wastewater treatment device according to claim 1, characterized in that: A motor (201) is fixedly mounted on the top surface of the processing tank (1); a rotating shaft (202) is fixedly mounted on the output end of the motor (201); the lower end of the rotating shaft (202) rotates through the top surface of the processing tank (1) and extends into the interior of the processing tank (1) via a first bearing seat; two fixing rods (203) are fixedly mounted on the outer wall of the rotating shaft (202).

3. A wastewater treatment device according to claim 2, characterized in that: Two movable sleeves (204) are provided, the inner walls of the two movable sleeves (204) are respectively slidably connected to the outer walls of the two fixed rods (203), the outer walls of the two fixed rods (203) are respectively slidably sleeved with elastic members 1 (205), the two ends of the two elastic members 1 (205) are respectively fixedly connected to the side surfaces of the two movable sleeves (204) and the outer wall of the rotating shaft (202), the outer walls of the two fixed rods (203) are respectively fixedly mounted with fixed sleeves (208), and the two fixed sleeves (208) are respectively in contact with the sides of the two movable sleeves (204) that are close to each other and are far from each other.

4. A wastewater treatment device according to claim 3, characterized in that: The two sides of the two movable sleeves (204) are respectively hinged with support rods (206), and a plurality of stirring rods (207) are provided, one end of the plurality of stirring rods (207) is respectively hinged to the outer wall of the rotating shaft (202), and the side surfaces of one end of the plurality of stirring rods (207) are respectively hinged to one end of the plurality of support rods (206).

5. A wastewater treatment device according to claim 4, characterized in that: Two movable sleeves (204) are fixedly mounted with two movable bars (209) at sides far from each other, and the other ends of the plurality of movable bars (209) slide through the two fixed sleeves (208) and extend to the other side of the fixed sleeves (208) close to each other. A connecting shaft (210) is rotatably mounted at one end of the plurality of movable bars (209). Two rollers (211) and two semi-cylinders (212) are each provided. The inner walls of the two rollers (211) are fixedly connected to the outer walls of the two connecting shafts (210), and the outer walls of the two rollers (211) are rollingly connected to the outer walls of the two semi-cylinders (212).

6. A wastewater treatment device according to claim 1, characterized in that: Two liquid suction chambers (301) are provided inside the semi-cylinder (212), two pistons (302) are provided, and the outer walls of the two pistons (302) are respectively slidably connected to the inner walls of the two liquid suction chambers (301), and two water outlet pipes (303) and two nozzles (304) are provided, and one end of the two water outlet pipes (303) is respectively fixed through the side surfaces at both ends of the semi-cylinder (212) and extends to the inside of the two liquid suction chambers (301), and the other end of the two water outlet pipes (303) is respectively fixedly connected to one end of the two nozzles (304).

7. A wastewater treatment device according to claim 6, characterized in that: A water inlet pipe (305) is slidably installed through the inner walls of the two liquid suction chambers (301), and a water suction head (306) is fixedly installed at the other ends of the two water inlet pipes (305). A one-way valve is installed on the water inlet pipe (305) and the water outlet pipe (303). A movable groove (307) is provided inside the semi-cylinder (212), and a movable block (308) is slidably installed on the inner wall of the movable groove (307).

8. A wastewater treatment device according to claim 7, characterized in that: Limit blocks (310) are fixedly mounted on both side surfaces of the moving block (308), two limit grooves (309) are provided on the inner wall of the moving groove (307), the inner walls of the two limit grooves (309) are slidably connected to the outer walls of the two limit blocks (310), and elastic members (319) are fixedly mounted on the side surfaces of the two limit blocks (310), the other ends of the two elastic members (319) are fixedly connected to the inner walls of the two limit grooves (309).

9. A wastewater treatment device according to claim 8, characterized in that: A groove body (311) is formed on the outer wall of the semi-cylinder (212); two connecting rods (312) are fixedly mounted on the side of the moving block (308); the other ends of the two connecting rods (312) slide through the inner wall of the moving groove (307) and extend into the groove body (311); a semi-circular plate (313) is fixedly mounted on the other ends of the two connecting rods (312); the side of the semi-circular plate (313) is slidably connected to the inner wall of the groove body (311); the outer wall of the semi-circular plate (313) is slidably connected to the outer wall of the roller (211); and the inner walls on both sides of the moving groove (307) are respectively formed with There are two T-shaped slots (314), the inner walls of the plurality of T-shaped slots (314) are slidably mounted with T-shaped blocks (316), the sides of the plurality of T-shaped blocks (316) are fixedly mounted with connecting plates (315), the other ends of the plurality of connecting plates (315) are fixedly connected to the sides of the two pistons (302), two adjusting rods (317) are fixedly mounted to the sides of the plurality of T-shaped slots (314), the side of the moving block (308) is provided with two oblique slots (318), and the outer walls of the two adjusting rods (317) are slidably connected to the inner walls of the two oblique slots (318), respectively.

10. A wastewater treatment method, applicable to the wastewater treatment device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: adding wastewater and chlorine water into the treatment tank (1) from the water inlet (102) and the dosing port (103); S2: stirring the mixed liquid of wastewater and chlorine water in the treatment tank (1) by means of a stirring rod (207) so that the wastewater and chlorine water are fully mixed; S3: The piston (302) is then moved to absorb the mixed liquid, and then the mixed liquid is sprayed from the upper and lower sides of the inside of the treatment tank (1) through the water outlet pipe (303) from the nozzle (304), so that the liquid is mixed more evenly; S4: After the sterilization is completed, the liquid is discharged from the drain port (104).

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