Heavy metal ion wastewater treatment device in construction wastewater

Abstract

The invention discloses a heavy metal ion wastewater treatment device in construction wastewater, and belongs to the field of wastewater treatment. Comprising a filtering and purifying mechanism, and an agent adding mechanism is arranged on the left side of the filtering and purifying mechanism; a driving mechanism is arranged above the filtering and purifying mechanism; the filtering and purifying mechanism comprises a box body, and the top of the box body is fixedly connected with a circulating pump; the medicament adding mechanism comprises a hollow cylinder, the top of the hollow cylinder fixedly communicates with the bottom end of the input end of the circulating pump, and the inner side of the hollow cylinder is rotationally connected with water wheel blades through a rotating shaft; according to the device, through the synergistic effect of an arc-shaped flow deflector, an inverted V-shaped flow guide strip and a flow guide plate in the filtering and purifying mechanism, multi-stage flow guide dispersion of building wastewater is realized, the wastewater and impurities such as suspended solids, silt and concrete residues in the wastewater are prevented from intensively impacting a filter screen, and meanwhile, the impurities above the filter screen can be directly disturbed by reciprocating swing of the flow guide plate; the filter screen is prevented from being blocked by impurity accumulation.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment, and more particularly to a device for treating heavy metal ion wastewater from construction wastewater. Background Technology

[0002] With the acceleration of urbanization and the large-scale advancement of infrastructure construction, the amount of wastewater generated by the construction industry has been increasing year by year. Among them, heavy metal ions contained in construction wastewater have become one of the important sources of water pollution. Heavy metal ions in construction wastewater mainly originate from the leaching of building materials such as cement and ceramics, the release of aging and damaged pipes, the corrosion of metal components during construction, and the disposal of decorative and finishing materials. These heavy metal ions mainly include lead, cadmium, mercury, chromium, copper, and zinc, which are characterized by their reluctance to degrade, bioaccumulation, and high toxicity. Once directly discharged into natural water bodies, they will not only deteriorate the aquatic ecological environment, affect the growth, development, and reproduction of aquatic organisms, and destroy biodiversity, but will also accumulate in the human body through the food chain, damaging multiple organs such as the liver, kidneys, bones, and brain, causing intellectual disability, growth retardation, cancer, and other serious diseases, posing a great threat to human health.

[0003] Given the unique characteristics of construction wastewater, existing treatment technologies and corresponding devices still have many shortcomings and deficiencies: Firstly, construction wastewater has a complex composition, containing not only heavy metal ions but also a large amount of suspended solids, silt, concrete residues, and other impurities. When filtering with existing technologies, concentrated discharge and accumulation can easily lead to blockages in subsequent treatment units. Furthermore, when adding reagents for purification of heavy metal ions, the reagents cannot be added adaptively according to the wastewater discharge volume, and the reagents cannot be ensured to be fully mixed. Improvements are needed. Therefore, we propose a wastewater treatment device for heavy metal ions in construction wastewater. Summary of the Invention

[0004] Purpose of the Invention: The purpose of this invention is to provide a wastewater treatment device for heavy metal ions in construction wastewater, which can efficiently separate suspended solids, silt, concrete residue and other impurities in construction wastewater, avoid the accumulation of impurities that may cause blockage of subsequent treatment units, and ensure the smooth and stable treatment process. Another purpose of this invention is to provide a device that can adaptively adjust the amount of reagent added according to the wastewater discharge volume, and can enhance the mixing effect of the reagent and wastewater, improve the removal efficiency of heavy metal ions, ensure that the effluent water quality meets the standards, and thus solve the defects of existing treatment technologies and devices in terms of impurity separation, adaptive reagent addition and sufficient mixing.

[0005] Technical solution: A wastewater treatment device for heavy metal ions in construction wastewater, including a filtration and purification mechanism, wherein a reagent addition mechanism is provided on the left side of the filtration and purification mechanism;

[0006] A drive mechanism is provided above the filtration and purification mechanism;

[0007] The filtration and purification mechanism includes a housing, and a circulation pump is fixedly connected to the top of the housing.

[0008] The drug addition mechanism includes a hollow cylinder. The top of the hollow cylinder is fixedly connected to the bottom of the input end of the circulating pump. A water turbine blade is rotatably connected to the inner side of the hollow cylinder via a rotating shaft. The front end of the central shaft of the water turbine blade extends through to the front of the hollow cylinder and is fixedly connected to a bevel gear one. A bevel gear two is rotatably connected to the front surface of the hollow cylinder above the bevel gear one via a rotating shaft. A slide rod is fixedly connected to the front surface of the hollow cylinder between the bevel gear one and the bevel gear two. A round tooth block is sleeved on the outer wall of the slide rod. The outer wall of the round tooth block meshes with the outer walls of the bevel gear one and the outer walls of the bevel gear two.

[0009] A distribution plate is provided in front of the second bevel gear. The right side of the distribution plate is fixedly connected to the left side of the box. A circular block is fixedly connected to the front end of the central shaft of the second bevel gear inside the distribution plate. A distribution port is integrally formed on the top of the circular block. A liquid medicine interface is integrally formed on the top of the distribution plate. A dosing port is fixedly connected between the bottom of the distribution plate and the box. A sewage inlet pipe is fixedly connected to the bottom of the hollow cylinder.

[0010] Furthermore, a three-way valve is fixedly connected to the right side of the housing. The top end of the output end of the three-way valve is fixedly connected to the outer wall of the input end of the circulating pump. A spray plate is connected to the inner upper surface of the housing via a rotating shaft. The top end of the central shaft of the spray plate extends through to the top of the housing and is rotatably connected to the housing via the rotating shaft. The output end of the circulating pump is fixedly connected to the top end of the central shaft of the spray plate. A circular gear is fixedly connected to the outer wall of the central shaft of the spray plate above the housing.

[0011] Furthermore, a round rod is fixedly connected to the center of the lower surface of the spray disc, a disc is fixedly connected to the outer wall of the round rod, and multiple arc-shaped guide vanes are fixedly connected to the upper surface of the disc.

[0012] Furthermore, inverted V-shaped drainage strips are fixedly connected to both the inner front surface and the inner rear surface of the housing, located below the disc.

[0013] Furthermore, a filter screen is fixedly installed inside the housing and below the disc, the bottom end of the round rod extends through to the bottom of the filter screen and is fixedly connected to a stirring rod, and a worm gear is fixedly connected to the outer wall of the round rod and below the filter screen.

[0014] Furthermore, inside the housing and on both sides of the worm gear, rotating rods are rotatably connected via rotating shafts. Worm wheels are fixedly connected to the outer walls of the rotating rods, and the worm wheels mesh with the worm gear. Actuating rods are symmetrically fixedly connected to the outer walls of the rotating rods. Inside the housing, on both sides and below the guide strip, flow guide plates are rotatably connected via hinges. Multiple springs are fixedly connected between the flow guide plates and the housing, and the flow guide plates are adapted to the actuating rods.

[0015] Furthermore, a detection sensor is fixedly installed on the front surface of the three-way valve.

[0016] Furthermore, a screw is rotatably connected to the front surface of the hollow cylinder, located to the left of the slide rod, via a rotating shaft. A threaded sleeve is threaded onto the outer wall of the screw. Connecting pieces are fixedly connected to the front and rear surfaces of the threaded sleeve, located outside the slide rod. The opposite sides of the two connecting pieces are rotatably connected to the front and rear surfaces of the circular tooth block, respectively, via a rotating shaft.

[0017] Furthermore, the drive mechanism includes a bracket, the bottom of which is fixedly connected to the top of the housing, a motor is fixedly connected to the inner side of the bracket, and a second spur gear is fixedly connected to the bottom end of the output shaft of the motor, with the outer side wall of the second spur gear meshing with the outer side wall of the first spur gear.

[0018] Beneficial effects: This device achieves multi-stage diversion and dispersion of construction wastewater through the synergistic effect of the arc-shaped guide vanes, inverted V-shaped guide strips and guide plates in the filtration and purification mechanism. This avoids the wastewater and its suspended solids, silt, concrete residue and other impurities from concentrating and impacting the filter screen. At the same time, the reciprocating swing of the guide plate can directly disturb the impurities above the filter screen and prevent the impurities from accumulating and clogging the filter screen.

[0019] The circulating filtration structure, consisting of a circulating pump and a three-way valve, can also perform secondary filtration and purification of wastewater, further improving the removal of impurities and fundamentally solving the defect of the existing technology where the concentrated discharge and accumulation of impurities leads to the blockage of subsequent treatment units.

[0020] The adjustable screw drives the circular tooth block to slide, thereby changing the meshing transmission ratio of the bevel gear set, realizing the adjustment of the rotation speed of the circular block in the dispensing plate, and ultimately accurately controlling the frequency and amount of drug addition;

[0021] The stirring rod in the filtration and purification mechanism can fully stir the wastewater after the addition of the reagent, enhance the mixing effect between the reagent and the wastewater, improve the reaction of heavy metal ions with the reagent, and effectively solve the problems of poor purification effect caused by the inability to adaptively adjust the addition of reagents and insufficient mixing in the existing technology.

[0022] The drive mechanism, through a motor and gear transmission, can simultaneously power multiple components such as the spray plate, arc-shaped guide vanes, stirring rod, and actuating rod, achieving coordinated operation of functions such as impurity dispersion and guidance, anti-clogging, and wastewater pre-mixing. This eliminates the need for multiple independent drive components, simplifying the device structure and reducing energy consumption and maintenance costs. Furthermore, the gear transmission structure offers high transmission efficiency and strong stability, and the motor speed can be adjusted to meet different wastewater treatment requirements, enhancing the device's applicability and operational flexibility.

[0023] This device, through the synergistic effect of multi-stage impurity filtration, adaptive reagent addition, and thorough mixing reaction, can efficiently remove suspended solids and heavy metal ions from construction wastewater, significantly improving wastewater treatment efficiency and ensuring that the effluent quality meets discharge requirements. This avoids the direct discharge of heavy metal ions, preventing damage to the aquatic ecosystem, reducing aquatic organism mortality and biodiversity loss, and simultaneously blocking the transmission pathway of heavy metal ions into the human body through the food chain, reducing their damage to organs such as the liver, kidneys, and brain. It effectively solves the ecological and health threats caused by the inadequacy of existing technologies. Attached Figure Description

[0024] Figure 1 This is a front view structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0026] Figure 3 This is a partial internal structural diagram of the filtration and purification mechanism of the present invention;

[0027] Figure 4 This is a schematic diagram of the connection structure between the worm gear and the worm of the present invention;

[0028] Figure 5 This is a side view of the pharmaceutical addition mechanism of the present invention.

[0029] Figure 6 This is a schematic diagram of the internal structure of the hollow cylinder of the present invention;

[0030] Figure 7 This is a schematic diagram of the internal structure of the material distribution tray of the present invention.

[0031] In the diagram: 1. Filtration and purification mechanism; 2. Chemical addition mechanism; 3. Drive mechanism; 101. Housing; 102. Circulation pump; 103. Three-way valve; 104. Spray plate; 105. Circular gear one; 106. Round rod; 107. Round disc; 108. Arc-shaped guide vane; 109. Guide strip; 110. Filter screen; 111. Stirring rod; 112. Worm gear; 113. Rotating rod; 114. Worm wheel; 115. Actuating rod; 116. Guide plate; 117. 118. Spring; 201. Detection sensor; 202. Hollow cylinder; 203. Water turbine blade; 204. Bevel gear one; 205. Bevel gear two; 206. Slide rod; 207. Circular tooth block; 208. Distributor plate; 209. Circular block; 210. Distributor port; 211. Chemical dosing port; 212. Screw; 213. Screw sleeve; 214. Connecting piece; 215. Chemical solution interface; 301. Bracket; 302. Motor; 303. Circular gear two. Detailed Implementation

[0032] To make the technical solution of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] Example

[0034] like Figures 1-4 As shown, a wastewater treatment device for heavy metal ions in construction wastewater is provided, including a filtration and purification mechanism 1;

[0035] The filtration and purification mechanism 1 includes a housing 101, and a circulation pump 102 is fixedly connected to the top of the housing 101.

[0036] A three-way valve 103 is fixedly connected to the right side of the housing 101. The top end of the output end of the three-way valve 103 is fixedly connected to the outer wall of the input end of the circulating pump 102. A spray plate 104 is connected to the inner upper surface of the housing 101 through a rotating shaft. The top end of the central shaft of the spray plate 104 extends through to the top of the housing 101 and is rotatably connected to the housing 101 through the rotating shaft. The output end of the circulating pump 102 is fixedly connected to the top end of the central shaft of the spray plate 104. A circular gear 105 is fixedly connected to the outer wall of the central shaft of the spray plate 104 above the housing 101.

[0037] A round rod 106 is fixedly connected to the center of the lower surface of the spray plate 104, a disc 107 is fixedly connected to the outer wall of the round rod 106, and a plurality of arc-shaped guide vanes 108 are fixedly connected to the upper surface of the disc 107.

[0038] Inverted V-shaped drainage strips 109 are fixedly connected to the inner front surface and inner rear surface of the housing 101, which are located below the disc 107.

[0039] A filter screen 110 is fixedly installed inside the housing 101 and below the disc 107. The bottom end of the round rod 106 extends through to the bottom of the filter screen 110 and is fixedly connected to a stirring rod 111. A worm gear 112 is fixedly connected to the outer wall of the round rod 106 and below the filter screen 110.

[0040] Inside the housing 101, on both sides of the worm 112, there are rotating rods 113 rotatably connected via rotating shafts. The outer side wall of the rotating rod 113 is fixedly connected to a worm wheel 114, which meshes with the worm 112. The outer side wall of the rotating rod 113 is symmetrically fixedly connected to actuating rods 115. Inside the housing 101, on both sides below the guide strip 109, there are guide plates 116 rotatably connected via hinges. Multiple springs 117 are fixedly connected between the guide plates 116 and the housing 101. The guide plates 116 are compatible with the actuating rods 115.

[0041] A detection sensor 118 is fixedly installed on the front surface of the three-way valve 103;

[0042] When the filtration and purification mechanism 1 is in use, the construction wastewater to be treated is first introduced into the tank 101. The circulation pump 102 and the drive mechanism 3 are started. The drive mechanism 3 drives the spur gear 105 to rotate, which in turn drives the spray plate 104 and the circular rod 106 below to rotate synchronously. When the circular rod 106 rotates, it drives the disc 107 and multiple arc-shaped guide vanes 108 to rotate. The arc-shaped guide vanes 108 initially guide and disperse the wastewater in the tank 101 to prevent the wastewater from concentrating and impacting the filter screen 110. At the same time, the inverted V-shaped guide strips 109 further guide the dispersed wastewater to both sides of the tank 101, so that the wastewater flows evenly through the filter screen 110 for impurity filtration. The rotation of the circular rod 106 also drives the worm gear 112 to rotate. The worm gear 112 meshes with the worm wheels 114 on both sides, driving the rotating rod 113 and the actuating rod 115 to rotate. 15. Periodically move the guide plate 116. The guide plate 116 swings back and forth with the help of the spring 117 to further prevent suspended solids, silt and other impurities from accumulating and clogging the filter screen 110. When the filtered wastewater flows below the filter screen 110, the round rod 106 drives the stirring rod 111 to rotate, pre-stirring the wastewater to prepare for subsequent reagent mixing. During this process, the detection sensor 118 on the three-way valve 103 detects the amount of wastewater discharged in real time and transmits the detection data to the control unit to provide data support for the adaptive dosing of the reagent addition mechanism 2. If it is necessary to circulate and filter the wastewater, the flow direction of the three-way valve 103 can be adjusted so that the wastewater in the tank 101 is transported again to the spray plate 104 by the circulation pump 102, and sprayed into the tank 101 by the spray plate 104 for secondary filtration and purification.

[0043] like Figures 5-7 As shown, a reagent addition mechanism 2 is provided on the left side of the filtration and purification mechanism 1;

[0044] The reagent adding mechanism 2 includes a hollow cylinder 201. The top of the hollow cylinder 201 is fixedly connected to the bottom of the input end of the circulating pump 102. A water turbine blade 202 is rotatably connected to the inner side of the hollow cylinder 201 through a rotating shaft. The front end of the central shaft of the water turbine blade 202 extends through to the front of the hollow cylinder 201 and is fixedly connected to a bevel gear 203. A bevel gear 204 is rotatably connected to the front surface of the hollow cylinder 201 above the bevel gear 203 through a rotating shaft. A slide rod 205 is fixedly connected to the front surface of the hollow cylinder 201 between the bevel gear 203 and the bevel gear 204. A round tooth block 206 is sleeved on the outer wall of the slide rod 205. The outer wall of the round tooth block 206 meshes with the outer wall of the bevel gear 203 and the outer wall of the bevel gear 204.

[0045] A distribution plate 207 is provided in front of the bevel gear 204. The right side of the distribution plate 207 is fixedly connected to the left side of the box 101. A round block 208 is fixedly connected to the front end of the central shaft of the bevel gear 204 inside the distribution plate 207. A distribution port 209 is integrally formed on the top of the round block 208. A liquid medicine interface 215 is integrally formed on the top of the distribution plate 207. A dosing port 210 is fixedly connected between the bottom of the distribution plate 207 and the box 101. A sewage inlet pipe 211 is fixedly connected to the bottom of the hollow cylinder 201.

[0046] A screw 212 is rotatably connected to the front surface of the hollow cylinder 201 and to the left of the slide rod 205 via a rotating shaft. A threaded sleeve 213 is threaded to the outer wall of the screw 212. A connecting piece 214 is fixedly connected to both the front and rear surfaces of the threaded sleeve 213 and to the outside of the slide rod 205. The opposite sides of the two connecting pieces 214 are rotatably connected to the front and rear surfaces of the round tooth block 206 via a rotating shaft.

[0047] When using the reagent addition mechanism 2, first connect the reagent interface 215 to the external storage device containing the reagent for treating heavy metal ions.

[0048] The construction wastewater to be treated enters the hollow cylinder 201 through the sewage inlet pipe 211. The water flow impacts the water turbine blades 202, causing them to rotate. The water turbine blades 202 drive the bevel gear 203 to rotate synchronously.

[0049] When the adjusting screw 212 rotates, the screw 212 drives the screw sleeve 213 to move axially along the screw 212. The screw sleeve 213 drives the circular gear block 206 to slide along the slide rod 205 through the connecting piece 214, thereby adjusting the meshing transmission ratio between the circular gear block 206 and the first bevel gear 203 and the second bevel gear 204. The first bevel gear 203 drives the second bevel gear 204 to rotate through the circular gear block 206. The second bevel gear 204 drives the circular block 208 in the distribution plate 207 to rotate. When the distribution port 20 on the circular block 208 rotates... When the cylinder 9 rotates to align with the liquid medicine interface 215, the medicine falls through the dispensing port 209 and then enters the tank 101 through the dosing port 210. By adjusting the meshing transmission ratio to change the rotation speed of the circular block 208, the frequency of alignment between the dispensing port 209 and the liquid medicine interface 215 can be adjusted, thereby achieving adaptive adjustment of the amount of medicine added. At the same time, the rotating stirring rod 111 inside the tank 101 fully stirs and mixes the incoming medicine and wastewater, improving the reaction efficiency of heavy metal ions with the medicine.

[0050] like Figure 3 As shown, a drive mechanism 3 is provided above the filtration and purification mechanism 1;

[0051] The drive mechanism 3 includes a bracket 301, the bottom of which is fixedly connected to the top of the housing 101. A motor 302 is fixedly connected to the inner side of the bracket 301. A second spur gear 303 is fixedly connected to the bottom end of the output shaft of the motor 302. The outer side wall of the second spur gear 303 meshes with the outer side wall of the first spur gear 105.

[0052] When using the drive mechanism 3, first check the connection stability between the bracket 301 and the housing 101 to ensure that the motor 302 is securely installed. According to the wastewater treatment volume requirements, start the motor 302. The output shaft of the motor 302 drives the second spur gear 303 to rotate. Since the second spur gear 303 meshes with the first spur gear 105, it drives the first spur gear 105 to rotate, providing power for the rotation of the spray plate 104 and the round rod 106. Finally, it drives the arc-shaped guide plate 108, stirring rod 111, toggle rod 115 and other components in the filtration and purification mechanism 1 to move synchronously, realizing the functions of impurity dispersion and guidance, anti-clogging, and wastewater pre-stirring. The output speed of the motor 302 can be adjusted to adapt to different wastewater treatment efficiency requirements.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A wastewater treatment device for heavy metal ions in construction wastewater, comprising a filtration and purification mechanism (1), characterized in that: A reagent addition mechanism (2) is provided on the left side of the filtration and purification mechanism (1); A drive mechanism (3) is provided above the filtration and purification mechanism (1); The filtration and purification mechanism (1) includes a housing (101), and a circulation pump (102) is fixedly connected to the top of the housing (101). The drug addition mechanism (2) includes a hollow cylinder (201). The top of the hollow cylinder (201) is fixedly connected to the bottom of the input end of the circulating pump (102). A water turbine blade (202) is rotatably connected to the inner side of the hollow cylinder (201) via a rotating shaft. The front end of the central shaft of the water turbine blade (202) extends through to the front of the hollow cylinder (201) and is fixedly connected to a bevel gear (203). The front surface of the hollow cylinder (201) is located on the bevel gear. A bevel gear 2 (204) is rotatably connected above gear 1 (203) via a rotating shaft. A slide rod (205) is fixedly connected to the front surface of the hollow cylinder (201) between bevel gear 1 (203) and bevel gear 2 (204). A round tooth block (206) is sleeved on the outer side wall of the slide rod (205). The outer side wall of the round tooth block (206) meshes with the outer side wall of bevel gear 1 (203) and the outer side wall of bevel gear 2 (204). A distribution plate (207) is provided in front of the second bevel gear (204). The right side of the distribution plate (207) is fixedly connected to the left side of the box (101). A round block (208) is fixedly connected to the front end of the central shaft of the second bevel gear (204) inside the distribution plate (207). A distribution port (209) is integrally formed on the top of the round block (208). A liquid interface (215) is integrally formed on the top of the distribution plate (207). A dosing port (210) is fixedly connected between the bottom of the distribution plate (207) and the box (101). A sewage inlet pipe (211) is fixedly connected to the bottom of the hollow cylinder (201).

2. The heavy metal ion wastewater treatment device for construction wastewater according to claim 1, characterized in that: A three-way valve (103) is fixedly connected to the right side of the housing (101). The top end of the output end of the three-way valve (103) is fixedly connected to the outer wall of the input end of the circulating pump (102). A spray plate (104) is connected to the inner upper surface of the housing (101) through a rotating shaft. The top end of the central shaft of the spray plate (104) extends through to the top of the housing (101) and is rotatably connected to the housing (101) through a rotating shaft. The output end of the circulating pump (102) is fixedly connected to the top end of the central shaft of the spray plate (104). A spur gear (105) is fixedly connected to the outer wall of the central shaft of the spray plate (104) above the housing (101).

3. The heavy metal ion wastewater treatment device for construction wastewater according to claim 2, characterized in that: A round rod (106) is fixedly connected to the center of the lower surface of the spray disc (104), a disc (107) is fixedly connected to the outer wall of the round rod (106), and a plurality of arc-shaped guide vanes (108) are fixedly connected to the upper surface of the disc (107).

4. The heavy metal ion wastewater treatment device for construction wastewater according to claim 3, characterized in that: The inner front and inner rear surfaces of the box (101) and below the disc (107) are both fixedly connected with inverted V-shaped drainage strips (109).

5. The heavy metal ion wastewater treatment device for construction wastewater according to claim 3, characterized in that: A filter screen (110) is fixedly installed inside the housing (101) and below the disc (107). The bottom end of the rod (106) extends through to the bottom of the filter screen (110) and is fixedly connected to a stirring rod (111). A worm gear (112) is fixedly connected to the outer wall of the rod (106) and below the filter screen (110).

6. The heavy metal ion wastewater treatment device for construction wastewater according to claim 5, characterized in that: Inside the housing (101) and on both sides of the worm (112), there are rotating rods (113) rotatably connected by a rotating shaft. The outer side wall of the rotating rod (113) is fixedly connected to a worm wheel (114), which meshes with the worm (112). The outer side wall of the rotating rod (113) is symmetrically fixedly connected to a lever (115). Inside the housing (101) on both sides and below the guide strip (109), there are guide plates (116) rotatably connected by hinges. Multiple springs (117) are fixedly connected between the guide plate (116) and the housing (101). The guide plate (116) is compatible with the lever (115).

7. The heavy metal ion wastewater treatment device for construction wastewater according to claim 2, characterized in that: A detection sensor (118) is fixedly installed on the front surface of the three-way valve (103).

8. The heavy metal ion wastewater treatment device for construction wastewater according to claim 1, characterized in that: The front surface of the hollow cylinder (201) and to the left of the slide rod (205) is rotatably connected to a screw (212) via a rotating shaft. The outer side wall of the screw (212) is threaded with a threaded sleeve (213). The front and rear surfaces of the threaded sleeve (213) and to the outside of the slide rod (205) are fixedly connected with connecting pieces (214). The opposite sides of the two connecting pieces (214) are rotatably connected to the front and rear surfaces of the circular tooth block (206) via a rotating shaft.

9. The heavy metal ion wastewater treatment device for construction wastewater according to claim 2, characterized in that: The drive mechanism (3) includes a bracket (301), the bottom of which is fixedly connected to the top of the housing (101), a motor (302) is fixedly connected to the inner side of the bracket (301), a second spur gear (303) is fixedly connected to the bottom end of the output shaft of the motor (302), and the outer side wall of the second spur gear (303) meshes with the outer side wall of the first spur gear (105).

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