A sewage treatment equipment with multi-stage filtration function

Abstract

The invention discloses a sewage treatment device with a multi-stage filtering function, and relates to the technical field of sewage treatment. The sewage treatment device comprises a filtering cabin, a regulating cabin, a sedimentation cabin, a dosing tank, a detection mechanism and a conveying mechanism. The filtering cabin, the regulating cabin and the sedimentation cabin are arranged in sequence along the conveying direction of the water flow. The dosing tank is tightly connected to the outer wall of the filtering cabin, the dosing tank is communicated with the conveying mechanism, the conveying mechanism is tightly connected to the filtering cabin, the conveying mechanism is used to transport sewage, the detection mechanism is communicated with the conveying mechanism, and the detection mechanism is used to detect the metal ion content in the sewage. The sewage to be treated is first filtered through the filtering cabin to remove solid impurities in the sewage, and then the conveying mechanism conveys the treated sewage to the regulating cabin for chemical precipitation treatment, so that the metal ions in the sewage are converted into insoluble precipitates, and the treated sewage finally flows into the sedimentation cabin for natural sedimentation, thereby removing the metal ions in the sewage.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to sewage treatment equipment with a multi-stage filtering function. Background Art

[0002] Chemical precipitation is a common sewage treatment technology, which mainly uses chemical agents to react with dissolved substances in water to generate water-insoluble solid particles (precipitates), and separates these solid particles from the water through sedimentation. This method is widely used to treat industrial wastewater, urban sewage and some special wastewater containing pollutants such as heavy metals, phosphorus, sulfide, organic matter, etc.

[0003] However, when adding corresponding chemicals to sewage, since sewage treatment is a continuous process and the distribution of heavy metal ions in sewage is uneven, existing sewage treatment equipment often adds chemicals to sewage at a constant dosage, which results in the heavy metal ions in the sewage not being completely reacted by the chemicals, resulting in the discharged sewage not meeting the standards. Summary of the invention

[0004] The object of the present invention is to provide a sewage treatment device with a multi-stage filtering function to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: the sewage treatment equipment includes a filter chamber, a regulating chamber, a sedimentation chamber, a dosing tank, a detection mechanism and a conveying mechanism, the filter chamber, the regulating chamber and the sedimentation chamber are arranged in sequence along the conveying direction of the water flow, the dosing tank is tightly connected to the outer wall of the filter chamber, the dosing tank is communicated with the conveying mechanism, the conveying mechanism is tightly connected to the filter chamber, the conveying mechanism is used to transport sewage, the detection mechanism is communicated with the conveying mechanism, and the detection mechanism is used to detect the metal ion content in the sewage.

[0006] The present application is used to treat sewage containing metal ions. The sewage to be treated is first filtered through a filter chamber to remove solid impurities in the sewage. Then, a conveying mechanism conveys the treated sewage to a regulating chamber for chemical precipitation treatment, so that the metal ions in the sewage are converted into insoluble precipitates. The treated sewage finally flows into a sedimentation chamber for natural sedimentation, thereby removing the metal ions in the sewage. When the conveying mechanism conveys the sewage, the metal ion content in the sewage during the conveying process is detected in real time by a detection mechanism, and the amount of medicine added from the dosing tank is controlled in real time according to the metal ion content in the sewage, thereby ensuring the treatment effect of the sewage.

[0007] Furthermore, a water inlet and a filter screen are provided on one side of the filter cabin, the filter screen is snap-fitted to the inner wall of the filter cabin, and a plurality of filter screens are arranged, and the apertures of the plurality of filter screens are gradually reduced.

[0008] Sewage flows into the filter cabin through the water inlet, and solid impurities in the sewage are removed through a number of filter screens. A number of filter screens with different apertures realize multi-stage filtration of sewage, thereby improving the filtration effect. The filter screens connected to the filter cabin can be easily disassembled and replaced.

[0009] Furthermore, the conveying mechanism includes a water pump and a water supply pipe. The water pump is tightly connected to the filter cabin, the water outlet of the water pump is connected to the water supply pipe, the water outlet of the water supply pipe is connected to the regulating cabin, and an adjusting mechanism is provided on the water supply pipe. The adjusting mechanism is used to control the amount of medicine added. The medicine adding tank has a built-in medicine supply pump, and a medicine delivery pipe is provided at the water outlet of the medicine supply pump, and the medicine delivery pipe is connected to the adjusting mechanism.

[0010] The water pump located at the bottom of the filter cabin can transport the filtered sewage to the regulating cabin for treatment. The water supply pipe is used to provide guidance for the water flow. The drug supply pump in the dosing tank pumps the agent into the water supply pipe at a certain flow rate, thereby mixing with the sewage in the water supply pipe. The regulating mechanism on the water supply pipe can adjust the amount of medicine flowing from the drug delivery pipe into the water supply pipe in real time according to the metal ion content measured by the detection mechanism, thereby realizing real-time adjustment of the amount of added medicine.

[0011] Furthermore, the detection mechanism includes a spiral tube, a detection tube, a guide block and a detection component. The water inlet end of the spiral tube is connected to the water supply pipe, the water outlet end of the spiral tube is connected to the detection tube, the water outlet end of the detection tube is connected to the regulating cabin, the guide block and the detection component are located in the detection tube, the detection component is used to detect the metal ion content in the sewage, and a cooling pipe is wound around the outside of the spiral tube, and the cooling pipe is externally connected to a cold source.

[0012] Since sewage treatment is a continuous process, and the distribution of metal ions in sewage is uneven, the content of metal ions in sewage passing through the water supply pipe will change, and the metal ion content will increase or decrease over a period of time. Since the solubility of metal ions in water decreases with decreasing temperature, a cooling pipe is wound around the outside of the spiral tube to cool the sewage passing through the spiral tube to a certain temperature. As the temperature decreases, excess metal ions will precipitate from the sewage in the form of solids, and the more metal ions there are in the sewage, the more solids will precipitate, and under the guidance of the spiral tube, they will make a spiral motion. Under the action of centrifugal force, the heavier solid metal ions will be distributed on the outer ring of the spiral tube, and the sewage passing through the detection tube will be divided into two parts by the guide block. The sewage containing solid precipitates flows to the detection component under the guidance of the guide block. The detection component can determine the metal ion content in the sewage by detecting the amount of precipitated solids.

[0013] Furthermore, a slide groove and a detection groove are provided on one side of the detection tube close to the outer ring of the spiral tube, the guide block is tightly connected to the detection tube, the guide block is located in the middle of the flow channel of the detection tube, the detection assembly includes a force plate, a slider, a magnetic rod and a support spring, the force plate is slidably connected to the inner wall of the detection tube, the force plate is tightly connected to the slider, the slider is slidably connected to the slide groove, the magnetic rod is tightly connected to the slider, one end of the support spring is tightly connected to the slider, the other end of the support spring is tightly connected to the inner wall of the slide groove, a coil is wound around the outside of the detection groove, the detection groove is connected to the slide groove, and the coil is externally connected to a detection power supply;

[0014] During detection: insert the magnetic rod into the detection slot.

[0015] The more metal ions there are in the sewage, the more solids will be precipitated during cooling. When the sewage containing precipitated solids hits the force-bearing plate at a certain flow rate under the guidance of the guide block, the more solids there are in the sewage, the greater the impact force on the force-bearing plate. Under the action of the impact force, the force-bearing plate will drive the slider to move to one side along the slide groove, the supporting spring will be stretched under force, the magnetic rod will be inserted into the detection groove, and the coil will move to cut the magnetic lines of force, thereby generating an induced current. The more solids there are in the sewage, the greater the impact force on the force-bearing plate, the longer the distance the magnetic rod is inserted into the detection groove, and the greater the induced current generated. That is, the greater the induced current generated by the coil, the more metal ions there are in the sewage, thereby realizing real-time detection of the metal ion content in the sewage.

[0016] Furthermore, the guide block is streamlined, and the water-facing surface of the force-bearing plate is arranged inclined.

[0017] The streamlined guide block can reduce resistance, and the inclined force-bearing plate can guide the sewage to prevent the solids precipitated in the sewage from gathering on the force-bearing plate.

[0018] Furthermore, the spiral diameter of the spiral tube gradually decreases.

[0019] Since sewage flows through the spiral tube at a certain flow rate, the centrifugal force on the sewage can be increased by setting a spiral tube with a gradually decreasing spiral diameter, thereby improving the separation effect of solids precipitated in the sewage.

[0020] Furthermore, the regulating mechanism includes a fixed ring, a movable ring, an regulating motor and a transmission gear, the fixed ring is tightly connected to the water supply pipe, an annular flow channel and a power chamber are arranged in the fixed ring, the movable ring is rotatably connected to the fixed ring, a flow hole and a gear ring are arranged on the movable ring, a dosing hole is arranged on the water supply pipe, the regulating motor is tightly connected to the fixed ring, the output end of the regulating motor is transmission-connected to the transmission gear, the transmission gear is located in the power chamber, and the transmission gear is meshed with the gear ring;

[0021] When adding medicine: the flow hole is connected with the dosing hole.

[0022] In the initial state, the flow holes and the dosing holes are arranged alternately, and the regulating motor is the main power source of the regulating mechanism. When adding medicine, the larger the overlapping area of ​​the flow holes and the dosing holes, the larger the flow cross-section formed, and the more medicine is added; when the detection mechanism detects that the metal ion content in the sewage increases, the regulating motor starts, driving the transmission gear to rotate, thereby transmitting power to the gear ring meshing with it, so that the movable ring rotates a certain angle along the fixed ring, thereby increasing the overlapping area of ​​the flow holes and the dosing holes, and increasing the amount of medicine flowing into the water supply pipe, that is, realizing automatic adjustment of the amount of medicine added according to the real-time metal ion content in the sewage.

[0023] Furthermore, an overflow port is provided on one side of the regulating tank close to the sedimentation tank, a clean water outlet is provided on one side of the upper end of the sedimentation tank, and a sewage outlet is provided on one side of the lower end of the sedimentation tank.

[0024] The sewage treated in the regulating tank flows into the sedimentation tank through the overflow port, and is further separated in the sedimentation tank. The solid sediment gradually settles to the bottom of the sedimentation tank and flows out from the sewage outlet at the bottom, while the clean sewage is discharged from the clean water outlet.

[0025] Furthermore, a stirring mechanism is provided in the regulating cabin, the stirring mechanism comprising a driving motor and a rotating shaft, the driving motor is firmly connected to the regulating cabin, the output end of the driving motor is drivingly connected to the rotating shaft, and a plurality of stirring blades are provided on the rotating shaft.

[0026] In order to promote the mixing of the reagent and sewage, a corresponding stirring mechanism is set in the regulating cabin. During stirring, the driving motor outputs torque to drive the rotating shaft to rotate, and then drives the stirring blades to rotate in the regulating cabin, thereby promoting the reaction between the reagent and sewage.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] 1. Taking advantage of the fact that the solubility of metal ions in water decreases as the temperature decreases, a cooling tube is wound around the outside of the spiral tube to cool the sewage passing through the spiral tube to a certain temperature, so that the metal ions will precipitate from the sewage in the form of solids. The more metal ions there are in the sewage, the more solids will be precipitated. The spiral tube is used to distribute the sewage containing precipitated solids on the outer ring of the spiral tube. When the sewage containing precipitated solids impacts the force plate at a certain flow rate under the guidance of the guide block, the force plate will drive the slider to move to one side along the slide groove under the action of the impact force. By using the electromagnetic induction phenomenon, the more solids there are in the sewage, the greater the impact force on the force plate, the longer the distance the magnetic rod is inserted into the detection slot, and the greater the induced current generated, that is, the greater the induced current generated by the coil, the more metal ions there are in the sewage, thereby realizing real-time detection of the metal ion content in the sewage.

[0029] 2. When the detection mechanism detects that the metal ion content in the sewage increases, the regulating motor starts, driving the transmission gear to rotate, thereby transmitting power to the gear ring meshing with it, causing the movable ring to rotate a certain angle along the fixed ring, thereby increasing the overlapping area of ​​the flow hole and the dosing hole, and increasing the amount of medicine flowing into the water supply pipe, that is, realizing automatic adjustment of the amount of medicine added according to the real-time metal ion content in the sewage. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0031] Figure 2 It is a schematic diagram of the filter cabin and the regulating cabin of the present invention;

[0032] Figure 3 It is a schematic diagram of the sedimentation tank of the present invention;

[0033] Figure 4 It is a schematic diagram of the detection mechanism of the present invention;

[0034] Figure 5 It is a schematic diagram of the adjustment mechanism of the present invention;

[0035] Figure 6 for Figure 5 A local enlarged view of point A;

[0036] Figure 7 It is a partial cross-sectional view of the adjustment mechanism;

[0037] Figure 8 It is a schematic diagram of the operation of the detection mechanism;

[0038] Fig. 9 It is a partial cross-sectional view of the detection mechanism;

[0039] Fig.10 for Fig. 9 A partial enlarged view of point B.

[0040] In the figure: 1. filtration chamber; 11. water inlet; 12. filter screen; 2. regulating chamber; 21. overflow port; 3. sedimentation chamber; 31. clean water outlet; 32. sewage outlet; 4. dosing tank; 41. drug delivery pipe; 5. detection mechanism; 51. spiral tube; 52. detection tube; 521. slideway; 522. detection slot; 53. guide block; 54. detection assembly; 541. force plate; 542. slider; 543. magnetic rod; 544 , support spring; 545, coil; 55, cooling pipe; 6, conveying mechanism; 61, water pump; 62, water supply pipe; 621, dosing hole; 7, adjusting mechanism; 71, fixing ring; 711, annular flow channel; 712, power chamber; 72, movable ring; 721, flow hole; 722, gear ring; 73, adjusting motor; 74, transmission gear; 8, stirring mechanism; 81, driving motor; 82, rotating shaft; 83, stirring blade. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] Example: Figure 1-Figure 10 As shown, the present invention provides a technical solution for sewage treatment equipment with a multi-stage filtration function, the sewage treatment equipment includes a filtration chamber 1, a regulating chamber 2, a sedimentation chamber 3, a dosing tank 4, a detection mechanism 5 and a conveying mechanism 6, the filtration chamber 1, the regulating chamber 2 and the sedimentation chamber 3 are arranged in sequence along the conveying direction of the water flow, the dosing tank 4 is tightly connected to the outer wall of the filtration chamber 1, the dosing tank 4 is communicated with the conveying mechanism 6, the conveying mechanism 6 is tightly connected to the filtration chamber 1, the conveying mechanism 6 is used to transport sewage, the detection mechanism 5 is communicated with the conveying mechanism 6, and the detection mechanism 5 is used to detect the metal ion content in the sewage.

[0043] The present application is used to treat sewage containing metal ions. The sewage to be treated is first filtered through a filter chamber 1 to remove solid impurities in the sewage. Then, a conveying mechanism 6 conveys the treated sewage to a regulating chamber 2 for chemical precipitation treatment, so that the metal ions in the sewage are converted into insoluble precipitates. The treated sewage finally flows into a sedimentation chamber 3 for natural sedimentation, thereby removing the metal ions in the sewage. When the conveying mechanism 6 conveys the sewage, the metal ion content in the sewage during the conveying process is detected in real time by a detection mechanism 5, and the amount of medicine added from the dosing tank 4 is controlled in real time according to the metal ion content in the sewage, thereby ensuring the treatment effect of the sewage.

[0044] A water inlet 11 and a filter screen 12 are provided on one side of the filter cabin 1. The filter screen 12 is engaged with the inner wall of the filter cabin 1. A plurality of filter screens 12 are arranged, and the apertures of the plurality of filter screens 12 are gradually reduced.

[0045] Sewage flows into the filter cabin 1 through the water inlet 11, and solid impurities in the sewage are removed through a plurality of filter screens 12. A plurality of filter screens 12 with different apertures realize multi-stage filtration of sewage, thereby improving the filtration effect. The filter screens 12 connected to the filter cabin 1 can be easily disassembled and replaced.

[0046] The conveying mechanism 6 includes a water pump 61 and a water supply pipe 62. The water pump 61 is tightly connected to the filter cabin 1. The water outlet of the water pump 61 is connected to the water supply pipe 62. The water outlet of the water supply pipe 62 is connected to the regulating cabin 2. An adjusting mechanism 7 is provided on the water supply pipe 62. The adjusting mechanism 7 is used to control the amount of medicine added. The medicine adding tank 4 has a built-in medicine supply pump. The water outlet of the medicine supply pump is provided with a medicine delivery pipe 41, and the medicine delivery pipe 41 is connected to the adjusting mechanism 7.

[0047] The water pump 61 located at the bottom of the filter cabin 1 can transport the filtered sewage to the regulating cabin 2 for treatment. The water supply pipe 62 is used to provide guidance for the water flow. The drug supply pump in the dosing tank 4 pumps the agent into the water supply pipe 62 at a certain flow rate, so as to mix with the sewage in the water supply pipe 62. The regulating mechanism 7 on the water supply pipe 62 can adjust the amount of medicine flowing from the drug delivery pipe 41 into the water supply pipe 62 in real time according to the metal ion content measured by the detection mechanism 5, thereby realizing real-time adjustment of the amount of added medicine.

[0048] The detection mechanism 5 includes a spiral tube 51, a detection tube 52, a guide block 53 and a detection component 54. The water inlet end of the spiral tube 51 is connected to the water supply pipe 62, the water outlet end of the spiral tube 51 is connected to the detection tube 52, the water outlet end of the detection tube 52 is connected to the regulating cabin 2, the guide block 53 and the detection component 54 are located in the detection tube 52, the detection component 54 is used to detect the metal ion content in the sewage, and a cooling pipe 55 is wound around the outer side of the spiral tube 51, and the cooling pipe 55 is externally connected to a cold source.

[0049] Since sewage treatment is a continuous process, and the distribution of metal ions in sewage is uneven, the content of metal ions in the sewage passing through the water supply pipe 62 will change, and the metal ion content will increase or decrease over a period of time. Since the solubility of metal ions in water decreases with decreasing temperature, a cooling pipe 55 is wound around the outer side of the spiral tube 51 to cool the sewage passing through the spiral tube 51 to a certain temperature. As the temperature decreases, excess metal ions will precipitate from the sewage in the form of solids, and the more metal ions there are in the sewage, the more solids will precipitate. Under the guidance of the spiral tube 51, the sewage will make a spiral motion. Under the action of centrifugal force, the heavier solid metal ions will be distributed on the outer ring of the spiral tube 51. The sewage passing through the detection tube 52 is divided into two parts by the guide block 53. The sewage containing solid precipitates flows to the detection component 54 under the guidance of the guide block 53. The detection component 54 can determine the metal ion content in the sewage by detecting the amount of precipitated solids.

[0050] A slide groove 521 and a detection groove 522 are provided on one side of the detection tube 52 close to the outer ring of the spiral tube 51. The guide block 53 is tightly connected to the detection tube 52. The guide block 53 is located in the middle of the flow channel of the detection tube 52. The detection assembly 54 includes a force plate 541, a slider 542, a magnetic rod 543 and a support spring 544. The force plate 541 is slidably connected to the inner wall of the detection tube 52, the force plate 541 is tightly connected to the slider 542, the slider 542 is slidably connected to the slide groove 521, the magnetic rod 543 is tightly connected to the slider 542, one end of the support spring 544 is tightly connected to the slider 542, and the other end of the support spring 544 is tightly connected to the inner wall of the slide groove 521. A coil 545 is wound around the outer side of the detection groove 522, the detection groove 522 is connected to the slide groove 521, and the coil 545 is externally connected to a detection power supply.

[0051] During detection: the magnetic bar 543 is inserted into the detection slot 522 .

[0052] As the content of metal ions in sewage increases, more solids are precipitated during cooling. When sewage containing precipitated solids impacts the force-bearing plate 541 at a certain flow rate under the guidance of the guide block 53, the more solids are contained in the sewage, the greater the impact force on the force-bearing plate 541. Under the action of the impact force, the force-bearing plate 541 will drive the slider 542 to move to one side along the slide groove 521, the support spring 544 is stretched under force, the magnetic rod 543 is inserted into the detection groove 522, and the coil 545 moves to cut the magnetic flux lines, thereby generating an induced current. The more solids are contained in the sewage, the greater the impact force on the force-bearing plate 541, the longer the distance that the magnetic rod 543 is inserted into the detection groove 522, and the greater the induced current generated, that is, the greater the induced current generated by the coil 545, the greater the content of metal ions in the sewage, thereby realizing real-time detection of the content of metal ions in the sewage.

[0053] The guide block 53 is streamlined, and the water-facing surface of the force-bearing plate 541 is arranged inclined.

[0054] The streamlined guide block 53 can reduce resistance, and the inclined force-bearing plate 541 can guide the sewage to prevent solids precipitated from the sewage from gathering on the force-bearing plate 541 .

[0055] The spiral diameter of the spiral tube 51 gradually decreases.

[0056] Since the sewage flows through the spiral tube 51 at a certain flow rate, the centrifugal force on the sewage can be increased by providing the spiral tube 51 with a gradually decreasing spiral diameter, thereby improving the separation effect of the solids precipitated in the sewage.

[0057] The regulating mechanism 7 includes a fixed ring 71, a movable ring 72, an regulating motor 73 and a transmission gear 74. The fixed ring 71 is tightly connected to the water supply pipe 62. An annular flow channel 711 and a power chamber 712 are arranged in the fixed ring 71. The movable ring 72 is rotatably connected to the fixed ring 71. A flow hole 721 and a gear ring 722 are arranged on the movable ring 72. A dosing hole 621 is arranged on the water supply pipe 62. The regulating motor 73 is tightly connected to the fixed ring 71. The output end of the regulating motor 73 is transmission-connected to the transmission gear 74. The transmission gear 74 is located in the power chamber 712, and the transmission gear 74 is meshed with the gear ring 722.

[0058] When adding medicine: the flow hole 721 is connected with the medicine adding hole 621.

[0059] In the initial state, the flow holes 721 and the dosing holes 621 are arranged alternately, and the regulating motor 73 is the main power source of the regulating mechanism 7. When adding medicine, the larger the overlapping area of ​​the flow holes 721 and the dosing holes 621, the larger the flow cross-section formed, and the more medicine is added; when the detection mechanism 5 detects that the metal ion content in the sewage increases, the regulating motor 73 starts, driving the transmission gear 74 to rotate, thereby transmitting power to the gear ring 722 meshing with it, so that the movable ring 72 rotates a certain angle along the fixed ring 71, thereby increasing the overlapping area of ​​the flow holes 721 and the dosing holes 621, and increasing the amount of medicine flowing into the water supply pipe 62, that is, realizing automatic adjustment of the added amount of medicine according to the real-time metal ion content in the sewage.

[0060] An overflow port 21 is provided on one side of the regulating tank 2 close to the sedimentation tank 3 , a clean water outlet 31 is provided on one side of the upper end of the sedimentation tank 3 , and a sewage outlet 32 ​​is provided on one side of the lower end of the sedimentation tank 3 .

[0061] The sewage treated in the regulating tank 2 flows into the sedimentation tank 3 through the overflow port 21 and is further separated in the sedimentation tank 3. The solid sediment gradually settles to the bottom of the sedimentation tank 3 and flows out from the sewage outlet 32 ​​at the bottom, while the clean sewage is discharged from the clean water outlet 31.

[0062] The stirring mechanism 8 is in the regulating cabin 2 , and the stirring mechanism 8 includes a driving motor 81 and a rotating shaft 82 . The driving motor 81 is tightly connected to the regulating cabin 2 , and the output end of the driving motor 81 is transmission-connected to the rotating shaft 82 . A plurality of stirring blades 83 are arranged on the rotating shaft 82 .

[0063] In order to promote the mixing of the reagent and the sewage, a corresponding stirring mechanism 8 is arranged in the regulating chamber 2. During stirring, the driving motor 81 outputs torque to drive the rotating shaft 82 to rotate, and then drives the stirring blade 83 to rotate in the regulating chamber 2, thereby promoting the reaction between the reagent and the sewage.

[0064] The working principle of the present invention is as follows: the sewage to be treated is first filtered through the filter cabin 1 to remove solid impurities in the sewage, and then the conveying mechanism 6 conveys the treated sewage to the regulating cabin 2 for chemical precipitation treatment, and the metal ion content in the sewage during the conveying process is detected in real time by the detection mechanism 5. A cooling pipe 55 is wound around the outer side of the spiral tube 51 to cool the sewage passing through the spiral tube 51 to a certain temperature. As the temperature decreases, excess metal ions will precipitate from the sewage in the form of solids, and the more metal ions in the sewage, the more solids will be precipitated, and under the guidance of the spiral tube 51, the spiral motion is performed. Under the action of centrifugal force, the heavier solid metal ions will be distributed on the outer ring of the spiral tube 51, and the sewage passing through the detection tube 52 is divided into two parts by the guide block 53. The sewage containing solid precipitates flows to the detection component 54 under the guidance of the guide block 53. The more metal ions in the sewage, the more solids will be precipitated when the temperature is lowered. When the sewage containing precipitated solids impacts the force-bearing plate 541 at a certain flow rate under the guidance of the guide block 53, the more solids in the sewage are, the more the force is applied. The greater the impact force of the plate 541, the greater the impact force of the plate 541; under the action of the impact force, the force-bearing plate 541 will drive the slider 542 to move to one side along the slide slot 521, the support spring 544 is stretched by the force, the magnetic bar 543 is inserted into the detection slot 522, and the coil 545 moves to cut the magnetic flux lines, thereby generating an induced current. The more solids there are in the sewage, the greater the impact force on the force-bearing plate 541, the longer the distance the magnetic bar 543 is inserted into the detection slot 522, and the greater the induced current generated, that is, the greater the induced current generated by the coil 545, the greater the metal ion content in the sewage; When the detection mechanism 5 detects that the metal ion content in the sewage increases, the regulating motor 73 starts, driving the transmission gear 74 to rotate, thereby transmitting power to the gear ring 722 meshing therewith, so that the movable ring 72 rotates a certain angle along the fixed ring 71, thereby increasing the overlapping area of ​​the flow hole 721 and the dosing hole 621, and increasing the amount of medicine flowing into the water supply pipe 62; the added medicine can convert the metal ions in the sewage into insoluble precipitates, and the treated sewage finally flows into the sedimentation tank 3 for natural sedimentation, thereby removing the metal ions in the sewage.

[0065] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A sewage treatment equipment with multi-stage filtration function, characterized in that: The sewage treatment equipment comprises a filter chamber (1), a regulating chamber (2), a sedimentation chamber (3), a dosing tank (4), a detection mechanism (5) and a conveying mechanism (6); the filter chamber (1), the regulating chamber (2) and the sedimentation chamber (3) are arranged in sequence along the conveying direction of the water flow; the dosing tank (4) is tightly connected to the outer wall of the filter chamber (1); the dosing tank (4) is communicated with the conveying mechanism (6); the conveying mechanism (6) is tightly connected to the filter chamber (1); the conveying mechanism (6) is used to transport sewage; the detection mechanism (5) is communicated with the conveying mechanism (6); and the detection mechanism (5) is used to detect the metal ion content in the sewage; The detection mechanism (5) comprises a spiral tube (51), a detection tube (52), a guide block (53) and a detection assembly (54); the water inlet end of the spiral tube (51) is connected to a water supply pipe (62); the water outlet end of the spiral tube (51) is connected to the detection tube (52); the water outlet end of the detection tube (52) is connected to a regulating cabin (2); the guide block (53) and the detection assembly (54) are located in the detection tube (52); the detection assembly (54) is used to detect the metal ion content in sewage; a cooling tube (55) is wound around the outer side of the spiral tube (51); the cooling tube (55) is externally connected to a cold source; A sliding groove (521) and a detection groove (522) are provided on one side of the detection tube (52) close to the outer ring of the spiral tube (51); the guide block (53) is tightly connected to the detection tube (52); the guide block (53) is located in the middle of the flow channel of the detection tube (52); the detection assembly (54) comprises a force plate (541), a slider (542), a magnetic rod (543) and a supporting spring (544); the force plate (541) is slidably connected to the inner wall of the detection tube (52); the force plate (541) is in contact with the inner wall of the detection tube (52); The slider (542) is firmly connected, the slider (542) is slidably connected to the slide groove (521), the magnetic bar (543) is firmly connected to the slider (542), one end of the support spring (544) is firmly connected to the slider (542), the other end of the support spring (544) is firmly connected to the inner wall of the slide groove (521), a coil (545) is wound around the outer side of the detection groove (522), the detection groove (522) is connected to the slide groove (521), and the coil (545) is externally connected to a detection power supply; During detection: the magnetic bar (543) is inserted into the detection slot (522).

2. The sewage treatment equipment with multi-stage filtration function according to claim 1 is characterized in that: A water inlet (11) and a filter screen (12) are provided on one side of the filter cabin (1); the filter screen (12) is engaged with the inner wall of the filter cabin (1); a plurality of filter screens (12) are arranged, and the apertures of the plurality of filter screens (12) gradually decrease.

3. The sewage treatment equipment with multi-stage filtration function according to claim 1 is characterized in that: The conveying mechanism (6) comprises a water pump (61) and a water supply pipe (62); the water pump (61) is tightly connected to the filter cabin (1); the water outlet of the water pump (61) is in communication with the water supply pipe (62); the water outlet of the water supply pipe (62) is in communication with the regulating cabin (2); a regulating mechanism (7) is provided on the water supply pipe (62); the regulating mechanism (7) is used to control the amount of medicine added; the medicine adding tank (4) has a built-in medicine supply pump; a medicine delivery pipe (41) is provided at the water outlet of the medicine supply pump; the medicine delivery pipe (41) is in communication with the regulating mechanism (7).

4. The sewage treatment equipment with multi-stage filtration function according to claim 1 is characterized in that: The guide block (53) is streamlined, and the water-facing surface of the force-bearing plate (541) is arranged inclined.

5. The sewage treatment equipment with multi-stage filtration function according to claim 1 is characterized in that: The spiral diameter of the spiral tube (51) gradually decreases.

6. The sewage treatment equipment with multi-stage filtration function according to claim 3 is characterized in that: The regulating mechanism (7) comprises a fixed ring (71), a movable ring (72), a regulating motor (73) and a transmission gear (74); the fixed ring (71) is tightly connected to the water supply pipe (62); an annular flow channel (711) and a power chamber (712) are provided in the fixed ring (71); the movable ring (72) is rotatably connected to the fixed ring (71); a flow hole (721) and a gear ring (722) are provided on the movable ring (72); a dosing hole (621) is provided on the water supply pipe (62); the regulating motor (73) is tightly connected to the fixed ring (71); an output end of the regulating motor (73) is transmission-connected to the transmission gear (74); the transmission gear (74) is located in the power chamber (712); and the transmission gear (74) is meshed with the gear ring (722); When adding medicine: the flow hole (721) is connected to the medicine adding hole (621).

7. The sewage treatment equipment with multi-stage filtration function according to claim 1 is characterized in that: An overflow port (21) is provided on a side of the regulating chamber (2) close to the sedimentation chamber (3), a clean water outlet (31) is provided on an upper side of the sedimentation chamber (3), and a sewage outlet (32) is provided on a lower side of the sedimentation chamber (3).

8. The sewage treatment equipment with multi-stage filtration function according to claim 1 is characterized in that: The regulating cabin (2) includes a stirring mechanism (8), wherein the stirring mechanism (8) comprises a driving motor (81) and a rotating shaft (82), wherein the driving motor (81) is firmly connected to the regulating cabin (2), an output end of the driving motor (81) is drivingly connected to the rotating shaft (82), and a plurality of stirring blades (83) are provided on the rotating shaft (82).

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