An indium refining wastewater treatment device and method

Abstract

This invention discloses an indium refining wastewater treatment device and method, belonging to the field of wastewater treatment technology. It includes a wastewater treatment housing with a wastewater treatment chamber located at the top inside. Two first filter frames and sealing plates, arranged at 180° intervals along the axial direction, are placed inside the wastewater treatment chamber. A rotating mechanism is installed between the two first filter frames and sealing plates and the wastewater treatment housing. This invention uses the counter-clockwise and clockwise rotation of a first motor to drive the two first filter frames and sealing plates to rotate accordingly, which in turn drives the first valve stem and the second valve stem to rotate accordingly. This achieves self-cleaning of filtered impurities and corresponding self-switching of the filtration space. It has the function of self-cleaning of the first filter frames and impurities without stopping the machine, and the cleaning process is fully automated, saving time and labor.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, specifically relating to an indium refining wastewater treatment device and treatment method. Background Technology

[0002] Indium is a precious metal widely used in high-tech industries. The refining process of indium generates a large amount of wastewater. The first step in wastewater treatment is to filter out larger impurities in the wastewater to avoid affecting subsequent chemical reactions. Currently, wastewater treatment filtration devices require manual labor to clean the filter screen and remove impurities after wastewater filtration, which is time-consuming and labor-intensive. Summary of the Invention

[0003] To address the problems mentioned in the background section, this invention provides an indium refining wastewater treatment device and method, which features fully automated cleaning operations, saving time and labor.

[0004] Another object of the present invention is to provide a treatment method for indium refining wastewater treatment equipment.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A wastewater treatment device for indium refining includes: a wastewater treatment housing; a wastewater treatment chamber is formed at the top inside the housing; two first filter frames and sealing plates are placed at equal intervals along the axial direction within the wastewater treatment chamber, arranged at 180° angles; a rotating mechanism is assembled between the two first filter frames and sealing plates and the wastewater treatment housing; a wastewater outlet communicating with the wastewater treatment chamber is formed inside the housing below the wastewater treatment chamber and between one of the first filter frames and sealing plates; a sludge outlet communicating with the wastewater treatment chamber is formed inside the housing below the wastewater treatment chamber and at a 180° angle to the wastewater outlet; two pressure sensors are symmetrically fixed inside the housing on the perpendicular sides to the wastewater outlet and the sludge outlet; a wastewater chamber communicating with the wastewater outlet is formed inside the housing below the wastewater outlet; and a communication device is fixed to the outer wall of the wastewater treatment housing. The sewage chamber has an internally threaded sewage outlet connected to the outside. Inside the sewage treatment machine casing, below the sludge outlet, is a sludge chamber communicating with the sludge outlet. A conveying mechanism is installed between the sludge chamber and the sewage treatment machine casing. Two support legs are symmetrically fixed to the bottom of the sewage treatment machine casing. A programmable controller is fixed to the outer wall of the sewage treatment machine casing. A sewage inlet pipe is placed above the sewage treatment machine casing. The sewage inlet pipe has two branch pipes fixed to the sewage treatment machine casing, and the two branch pipes are respectively connected to the space above two pressure sensors. The inlets of the two branch pipes of the sewage inlet pipe are respectively rotatably connected to a second valve stem and a first valve stem. A first follower mechanism is installed between the rotating mechanism and the second valve stem. A second follower mechanism is installed between the second valve stem and the first valve stem. A valve body is fixed to the second valve stem and the first valve stem. The rotating mechanism, pressure sensors, conveying mechanism, and programmable controller are connected by wires.

[0007] As a further technical solution, the above-mentioned rotating mechanism includes a second motor fixed to the bottom of the sewage treatment machine casing and an intermediate shaft placed in the middle of the sewage treatment chamber. The bottom end of the intermediate shaft is connected to the output shaft of the second motor, and the top end of the intermediate shaft extends through the sewage treatment machine casing to the top of the sewage treatment machine casing. The intermediate shaft is connected to the through section of the sewage treatment machine casing through a bearing. Two first filter screen frames and a sealing plate are fixed to the intermediate shaft near the side wall of the intermediate shaft. The second motor is connected to the programmable controller by wires.

[0008] As a further technical solution, the above-mentioned conveying mechanism includes two support plates symmetrically fixed to the outer wall of the sewage treatment machine casing on both sides of the sludge chamber outlet. A first motor is fixed to one of the support plates near the outer wall. Two drive shafts are placed inclined outward and upward between the two support plates and near the inner side of the sludge chamber. One end of one drive shaft is connected to the output shaft of the first motor through a coupling, and the other end of the other drive shaft is connected to the support plate on the same side through a bearing. Both ends of the other drive shaft are connected to the inner wall of the sewage treatment machine casing through bearings. A drive roller is fixedly sleeved on the outer side of the drive shaft. A third drive belt is frictionally connected between the two drive rollers. The first motor is connected to the programmable controller by wires.

[0009] As a further technical solution, the two ends of the second valve stem extend through the branch pipe to the outside, one end of the first valve stem is connected to the inner wall of the branch pipe through a bearing, and the other end of the first valve stem extends through the inner wall of the branch pipe to the outside. The second valve stem and the first valve stem are connected to the through section of the branch pipe through a bearing.

[0010] As a further technical solution, the first follower mechanism includes a second conical wheel fixedly sleeved on the intermediate shaft extending to the outer end of the sewage treatment machine housing, two support seats fixedly sleeved on the top of the sewage treatment machine housing, and a third pulley fixedly sleeved on the second valve stem extending to the outer end of the branch pipe. A second support rod and a first support rod are fixedly connected inside the two support seats respectively. A first conical gear meshing with the second conical wheel is fixedly sleeved on the end of the second support rod near the second conical wheel, and a second gear is fixedly sleeved on the end of the second support rod away from the second conical wheel. A fourth pulley is fixedly sleeved on the end of the first support rod near the third pulley. A second transmission belt is frictionally connected between the third pulley and the fourth pulley. A first gear meshing with the second gear is fixedly sleeved on the end of the first support rod away from the fourth pulley. The transmission ratio between the second gear and the first gear satisfies that when the intermediate shaft rotates 90°, the second valve stem rotates 180°.

[0011] As a further technical solution, the second follower mechanism includes a second pulley fixedly sleeved on the end of the second valve stem away from the third pulley and a first pulley fixedly sleeved on the first valve stem extending to the outer end of the branch pipe. The second pulley and the first pulley are connected by a first cross-type transmission belt through friction transmission.

[0012] As a further technical solution, a second filter screen frame is fixedly connected inside the sludge chamber above the third transmission belt, and multiple connecting holes connecting the sludge chamber and the sewage chamber are symmetrically opened inside the sewage treatment machine casing between the sludge chamber and the sewage chamber.

[0013] As a further technical solution, an annular plate is fixedly connected inside the above-mentioned connecting hole near the sewage chamber, and a blocking plate is placed inside the connecting hole on the side of the annular plate near the sewage chamber. A connecting spring is elastically connected between the blocking plate and the annular plate.

[0014] A method for treating wastewater from indium refining includes the following steps:

[0015] S1: During the treatment of indium refining wastewater, the valve body of the branch pipe on the side of the wastewater inlet pipe closest to the second valve stem is opened, and the valve body of the branch pipe on the side of the wastewater inlet pipe closest to the first valve stem is closed. The indium refining wastewater enters the space formed by the corresponding sealing plate and the first filter screen frame through the opened branch pipe. After being filtered by the first filter screen frame, it is discharged into the wastewater chamber through the wastewater outlet and then discharged through the internal threaded wastewater outlet, thus realizing the filtration treatment of indium refining wastewater.

[0016] S2: Impurities in the indium refining wastewater are intercepted by the first filter screen and accumulate on the pressure sensor in the corresponding space. When the pressure signal sensed by the pressure sensor reaches the set value, it transmits a signal to the programmable controller (PLC). The PLC controls the second motor to start, and the second motor drives the output shaft to rotate, which in turn drives the intermediate shaft to rotate. The intermediate shaft drives the connected first filter screen and sealing plate to rotate counterclockwise until it rotates to 90°. At this time, the PLC controls the second motor to stop driving. At this time, the impurities accumulated on the pressure sensor are pushed to the sludge outlet by the moving first filter screen and fall onto the third transmission belt through the sludge outlet. The PLC controls the first motor to start, and the first motor drives the output shaft to rotate, which in turn drives the connected transmission shaft to rotate. The connected transmission shaft drives the connected transmission roller to rotate, and the connected transmission roller drives the third transmission belt to rotate through friction transmission. The third transmission belt drives another transmission roller to rotate through friction transmission, transporting the fallen impurities to the outside. At the same time, the intermediate... The shaft drives the second conical wheel to rotate, the second conical wheel drives the first conical gear to rotate, the first conical gear drives the second support rod to rotate, the second support rod drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the first support rod to rotate, the first support rod drives the fourth pulley to rotate, the fourth pulley drives the second transmission belt to rotate through friction transmission, the second transmission belt drives the third pulley to rotate through friction transmission, the third pulley drives the second valve stem to rotate, the second valve stem drives the valve body to rotate 180° to close, at the same time, the second valve stem drives the second pulley to rotate, the second pulley drives the first cross transmission belt to rotate through friction transmission, the first cross transmission belt drives the first pulley to rotate in the opposite direction through friction transmission, the first pulley drives the first valve stem to rotate in the opposite direction, the first valve stem drives the valve body to rotate 180° to open, and the indium refining wastewater is filtered through another corresponding space to achieve non-stop self-cleaning of impurities in the indium refining wastewater filtration process;

[0017] S3: When the pressure signal sensed by another spatial pressure sensor reaches the set value, the programmable controller controls the second motor to start and drive the intermediate shaft to rotate clockwise, thereby repeating the process to achieve continuous filtration treatment of indium refining wastewater.

[0018] S4: In the above process, since the third transmission belt is set as a downward inclined mechanism, if the impurities on the third transmission belt contain some sewage, the sewage will slide down along the inclination of the third transmission belt under its own gravity. After being filtered by the second filter screen, it will be discharged into the sewage chamber through multiple connecting holes and then discharged through the internal thread sewage outlet, thus avoiding the sewage from being discharged with the filtered impurities and causing insufficient sewage treatment.

[0019] S5: In the above process, since the connecting hole is elastically blocked at the end near the sewage chamber, the sewage can only flow from the sludge chamber to the sewage chamber and cannot flow back, thus preventing the sewage in the sewage chamber from flowing into the sludge chamber and causing outflow.

[0020] Compared with the prior art, the beneficial effects of the present invention are: the present invention drives the two first filter screen frames and sealing plates to rotate accordingly by the counterclockwise and clockwise rotation of the first motor, and drives the first valve stem and the second valve stem to rotate accordingly, so as to realize the self-cleaning of filtered impurities and the corresponding self-switching of the filter space. It has the function of self-cleaning of the first filter screen frame and impurities without stopping the machine. The cleaning work is fully automated, saving time and effort. Attached Figure Description

[0021] Figure 1 This is a top view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 For the present invention Figure 1 A vertical sectional view from a single perspective;

[0024] Figure 4 For the present invention Figure 1 Another perspective vertical section;

[0025] Figure 5 This is a vertical cross-sectional view of the connecting hole of the present invention.

[0026] Reference numerals: 1-Wastewater treatment unit housing, 2-First valve stem, 3-Programmable controller, 4-First pulley, 5-Second valve stem, 6-First cross-type transmission belt, 7-Second pulley, 8-Third pulley, 9-First support rod, 10-Support base, 11-First gear, 12-Second gear, 13-Second support rod, 14-First bevel gear, 15-Wastewater inlet pipe, 16-Second bevel wheel, 17-Wastewater outlet, 18-First filter screen frame, 19-Wastewater treatment chamber, 20- 21-Intermediate shaft, 22-Pressure sensor, 23-Sealing plate, 24-Second motor, 25-Connecting hole, 26-Second transmission belt, 27-Fourth pulley, 28-Support leg, 29-Internal threaded sewage outlet, 30-Sewage chamber, 31-Sludge outlet, 32-Support plate, 33-Transmission roller, 34-Sludge chamber, 35-Third transmission belt, 36-Second filter screen frame, 37-Transmission shaft, 38-Blocking plate, 39-Ring plate, 40-Connecting spring, 41-Valve body. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Example 1:

[0028] Please see Figure 1-5A wastewater treatment device for indium refining includes: a wastewater treatment housing 1; a wastewater treatment chamber 19 is formed at the top inside the wastewater treatment housing 1; two first filter frames 18 and sealing plates 23 are placed at equal intervals along the axial direction inside the wastewater treatment chamber 19; a rotating mechanism is assembled between the two first filter frames 18 and sealing plates 23 and the wastewater treatment housing 1; a wastewater outlet 17 is formed inside the wastewater treatment housing 1 below the wastewater treatment chamber 19 and between one of the first filter frames 18 and sealing plates 23, communicating with the wastewater treatment chamber 19; a sludge outlet 31 is formed inside the wastewater treatment housing 1 below the wastewater treatment chamber 19 and at a 180° angle to the wastewater outlet 17, communicating with the wastewater treatment chamber 19; two pressure sensors 22 are symmetrically fixed inside the wastewater treatment housing 1 on the vertical sides of the wastewater outlet 17 and the sludge outlet 31; and a wastewater chamber 30 is formed inside the wastewater treatment housing 1 below the wastewater outlet 17, communicating with the wastewater outlet 17. The outer wall is fixedly connected to an internally threaded sewage outlet 29 that connects the sewage chamber 30 to the outside. Inside the sewage treatment machine housing 1, below the sludge outlet 31, there is a sludge chamber 34 that communicates with the sludge outlet 31. A conveying mechanism is installed between the sludge chamber 34 and the sewage treatment machine housing 1. Two support legs 28 are symmetrically fixed to the bottom of the sewage treatment machine housing 1. A programmable controller 3 is fixedly connected to the outer wall of the sewage treatment machine housing 1. A sewage inlet pipe 15 is placed on top of the sewage treatment machine housing 1. The sewage inlet pipe 15 has two branch pipes fixedly connected to the sewage treatment machine housing 1, and the two branch pipes are respectively connected to the space above the two pressure sensors 22. The inlets of the two branch pipes of the sewage inlet pipe 15 are respectively rotatably connected to a second valve stem 5 and a first valve stem 2. A first follower mechanism is installed between the rotating mechanism and the second valve stem 5. A second follower mechanism is installed between the second valve stem 5 and the first valve stem 2. A valve body 41 is fixedly connected to the second valve stem 5 and the first valve stem 2. The rotating mechanism, pressure sensors 22, and conveying mechanism are connected to the programmable controller 3 by wires.

[0029] Specifically, the rotating mechanism includes a second motor 24 fixed to the bottom of the sewage treatment machine housing 1 and an intermediate shaft 21 placed in the middle of the sewage treatment chamber 19. The bottom of the intermediate shaft 21 is connected to the output shaft of the second motor 24, and the top of the intermediate shaft 21 extends through the sewage treatment machine housing 1 to the top of the sewage treatment machine housing 1. The intermediate shaft 21 is connected to the through section of the sewage treatment machine housing 1 through a bearing. Two first filter screen frames 18 and a sealing plate 23 are fixed to the intermediate shaft 21 near the side wall of the intermediate shaft 21. The second motor 24 is connected to the programmable controller 3 by wires.

[0030] Specifically, the conveying mechanism includes two support plates 32 symmetrically fixed to the outer wall of the sewage treatment machine housing 1 on both sides of the outlet of the sludge chamber 34. A first motor 20 is fixed to one support plate 32 near the outer wall. Two drive shafts 37 are placed inclined outward and upward between the two support plates 32 and near the inner side of the sludge chamber 34. One end of one drive shaft 37 is connected to the output shaft of the first motor 20 through a coupling, and the other end of the other drive shaft 37 is connected to the support plate 32 on the same side through a bearing. Both ends of the other drive shaft 37 are connected to the inner wall of the sewage treatment machine housing 1 through bearings. A drive roller 33 is fixedly sleeved on the outer side of the drive shaft 37. A third drive belt 35 is connected between the two drive rollers 33 through friction transmission. The first motor 20 is connected to the programmable controller 3 by wires.

[0031] Specifically, the two ends of the second valve stem 5 extend through the branch pipe to the outside, and one end of the first valve stem 2 is connected to the inner wall of the branch pipe through a bearing, and the other end of the first valve stem 2 extends through the inner wall of the branch pipe to the outside. The second valve stem 5 and the first valve stem 2 are connected to the through section of the branch pipe through a bearing.

[0032] Specifically, the first follower mechanism includes a second conical wheel 16 fixedly sleeved on the intermediate shaft 21 extending to the outer end of the sewage treatment machine housing 1, two support seats 10 fixedly sleeved on the top of the sewage treatment machine housing 1, and a third pulley 8 fixedly sleeved on the second valve stem 5 extending to the outer end of the branch pipe. A second support rod 13 and a first support rod 9 are respectively fixedly connected inside the two support seats 10. A first bevel gear 14, meshing with the second conical wheel 16, is fixedly sleeved on the end of the second support rod 13 near the second conical wheel 16. The first support rod 13 is fixedly sleeved with a second gear 12 at the end away from the second conical wheel 16. The first support rod 9 is fixedly sleeved with a fourth pulley 27 at the end near the third pulley 8. The third pulley 8 and the fourth pulley 27 are connected by a second transmission belt 26 through friction transmission. The first support rod 9 is fixedly sleeved with a first gear 11 that meshes with the second gear 12 at the end away from the fourth pulley 27. The transmission ratio between the second gear 12 and the first gear 11 satisfies the condition that when the intermediate shaft 21 rotates 90°, the second valve stem 5 rotates 180°.

[0033] Specifically, the second follower mechanism includes a second pulley 7 fixedly sleeved on the end of the second valve stem 5 away from the third pulley 8 and a first pulley 4 fixedly sleeved on the first valve stem 2 extending to the outer end of the branch pipe. A first cross-type transmission belt 6 is frictionally connected between the second pulley 7 and the first pulley 4.

[0034] A method for treating wastewater from indium refining includes the following steps:

[0035] S1: During the treatment of indium refining wastewater, the valve body 41 of the branch pipe on the side of the wastewater inlet pipe 15 near the second valve stem 5 is opened, and the valve body 41 of the branch pipe on the side of the wastewater inlet pipe 15 near the first valve stem 2 is closed. The indium refining wastewater enters the space formed by the corresponding sealing plate 23 and the first filter screen 18 through the opened branch pipe. After being filtered by the first filter screen 18, it is discharged into the wastewater chamber 30 through the wastewater outlet 17 and then discharged through the internal threaded wastewater outlet 29, thus realizing the filtration treatment of indium refining wastewater.

[0036] S2: Impurities in the indium refining wastewater are intercepted by the first filter screen 18 and accumulate on the pressure sensor 22 in the corresponding space. When the pressure signal sensed by the pressure sensor 22 reaches the set value, it transmits a signal to the programmable controller 3. The programmable controller 3 controls the second motor 24 to start. The second motor 24 drives the output shaft to rotate, which in turn drives the intermediate shaft 21 to rotate. The intermediate shaft 21 drives the connected first filter screen 18 and sealing plate 23 to rotate counterclockwise until it rotates to 90°. The programmable controller 3 then controls the second motor 24 to stop driving. At this time, the impurities accumulated on the pressure sensor 22 are pushed to the sludge outlet 31 by the moving first filter screen 18. They fall onto the third transmission belt 35 through the sludge outlet 31. The programmable controller 3 then controls the first motor 20 to start. The first motor 20 drives the output shaft to rotate, which in turn drives the connected transmission shaft 37 to rotate. The connected transmission shaft 37 drives the connected transmission roller 33 to rotate. The connected transmission roller 33 drives the third transmission belt 35 to rotate through friction transmission. The third transmission belt 35 drives another transmission roller 33 to rotate through friction transmission, transporting the fallen impurities to the outside. The intermediate shaft 21 drives the second conical wheel 16 to rotate, the second conical wheel 16 drives the first conical gear 14 to rotate, the first conical gear 14 drives the second support rod 13 to rotate, the second support rod 13 drives the second gear 12 to rotate, the second gear 12 drives the first gear 11 to rotate, the first gear 11 drives the first support rod 9 to rotate, the first support rod 9 drives the fourth pulley 27 to rotate, the fourth pulley 27 drives the second transmission belt 26 to rotate via friction transmission, the second transmission belt 26 drives the third pulley 8 to rotate via friction transmission, and the third pulley 8... The second valve stem 5 is driven to rotate, which in turn drives the valve body 41 to rotate 180° to close. At the same time, the second valve stem 5 drives the second pulley 7 to rotate, which in turn drives the first cross-type transmission belt 6 to rotate through friction transmission. The first cross-type transmission belt 6 in turn drives the first pulley 4 to rotate in the opposite direction through friction transmission. The first pulley 4 drives the first valve stem 2 to rotate in the opposite direction, which in turn drives the valve body 41 to rotate 180° to open. The indium refining wastewater is then filtered through another corresponding space, achieving non-stop self-cleaning of impurities in the indium refining wastewater filtration process.

[0037] S3: When the pressure signal sensed by the other space pressure sensor 22 reaches the set value, the programmable controller 3 controls the second motor 24 to start driving the intermediate shaft 21 to rotate clockwise, thereby achieving continuous filtration treatment of indium refining wastewater. Example 2:

[0038] The difference between this embodiment and Embodiment 1 is that:

[0039] Specifically, a second filter screen frame 36 is fixedly connected inside the sludge chamber 34 above the third transmission belt 35, and multiple connecting holes 25 are symmetrically opened inside the sewage treatment machine casing 1 between the sludge chamber 34 and the sewage chamber 30 to connect the sludge chamber 34 and the sewage chamber 30.

[0040] A method for treating wastewater from indium refining includes the following steps:

[0041] S1: In the above process, since the third transmission belt 35 is set as a downward inclined mechanism, if the impurities on the third transmission belt 35 contain some sewage, the sewage will slide down along the inclination of the third transmission belt 35 under its own gravity. After being filtered by the second filter screen 36, it will be discharged into the sewage chamber 30 through multiple connecting holes 25, and then discharged through the internal thread sewage outlet 29, so as to avoid sewage being discharged with the filtered impurities and causing insufficient sewage treatment. Example 3:

[0042] The difference between this embodiment and embodiment 2 is that:

[0043] Specifically, a ring plate 39 is fixedly connected inside the connecting hole 25 near the sewage chamber 30, and a blocking plate 38 is placed inside the connecting hole 25 on the side of the ring plate 39 near the sewage chamber 30. A connecting spring 40 is elastically connected between the blocking plate 38 and the ring plate 39.

[0044] A method for treating wastewater from indium refining includes the following steps:

[0045] S1: In the above process, since the connecting hole 25 is elastically blocked by the end of the sewage chamber 30, the sewage can only flow from the sludge chamber 34 to the sewage chamber 30 and cannot flow back, thus preventing the sewage in the sewage chamber 30 from flowing into the sludge chamber 34 and causing outflow.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "front," "rear," "upper," "lower," "left," "right," "head," "tail," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention. It should also be noted that, unless otherwise explicitly specified and limited, terms such as "connected" and "linked" should be interpreted broadly. For example, it can refer to a fixed connection; a detachable connection; a point connection; a direct connection; or an indirect connection through an intermediate medium, which can enable communication between the internal parts of two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Device connection methods not described in detail in this invention are understood according to conventional connection methods in the art.

[0047] The above embodiments are merely specific examples to further illustrate the purpose, technical solution, and beneficial effects of the present invention, and the present invention is not limited thereto. Any modifications, equivalent substitutions, improvements, etc., made within the scope of the disclosure of the present invention are included within the protection scope of the present invention.

Claims

1. A wastewater treatment device for indium refining, characterized in that, Include: Sewage treatment shell, sewage treatment cavity is opened in the upper inside of sewage treatment shell, two 180 ° first filter screen frame and sealing plate are placed in sewage treatment cavity inside along the axial equidistant, two first filter screen frame and sealing plate are equipped with rotating mechanism between first filter screen frame and sealing plate and sewage treatment shell, sewage outlet is opened in sewage treatment shell inside below sewage treatment cavity and between first filter screen frame and sealing plate, and sewage treatment cavity is communicated, sludge outlet is opened in sewage treatment shell inside below sewage treatment cavity and with sewage outlet 180 °, and sewage treatment cavity is communicated, two pressure sensors are symmetrically fixed in sewage treatment shell inside and located sewage outlet and sludge outlet vertical side, sewage cavity is opened in sewage treatment shell inside below sewage outlet, and sewage outlet is communicated, inner thread sewage outlet is fixed on the outer wall of sewage treatment shell and is communicated with sewage cavity and the outside, sludge cavity is opened in sewage treatment shell inside below sludge outlet, and sludge outlet is communicated, conveying mechanism is equipped between sludge cavity and sewage treatment shell, two support legs are symmetrically fixed on the bottom end of sewage treatment shell, programmable controller is fixed on the outer wall of sewage treatment shell, sewage inlet pipe is placed on the upper sewage treatment shell, sewage inlet pipe has two branch pipes fixed with sewage treatment shell, and two branch pipes are respectively communicated with the space above two pressure sensors, second valve rod and first valve rod are rotatably connected on the water inlet of two branch pipes of sewage inlet pipe, first follow-up mechanism is equipped between rotating mechanism and second valve rod, second follow-up mechanism is equipped between second valve rod and first valve rod, valve body is respectively fixed on second valve rod and first valve rod, and rotating mechanism, pressure sensor and conveying mechanism are connected with programmable controller by wire.

2. The apparatus for treating wastewater from indium refining according to claim 1, characterized by: The rotating mechanism includes the second motor fixed on the bottom end of the sewage treatment shell and the intermediate shaft placed in the middle of the sewage treatment cavity, the bottom end of the intermediate shaft is connected with the output shaft of the second motor, the top end of the intermediate shaft extends to the upper sewage treatment shell through the sewage treatment shell, the intermediate shaft is connected with the sewage treatment shell through bearing, the first filter screen frame and the sealing plate are fixed on the side wall close to the intermediate shaft, and the second motor is connected with the programmable controller by wire.

3. The apparatus for treating wastewater from indium refining according to claim 1, wherein: The conveying mechanism includes two support plates symmetrically fixed on the outer wall of the sewage treatment shell and located on both sides of the sludge cavity outlet, the first motor is fixed on one support plate, two transmission shafts are placed between the two support plates and the sludge cavity and inclined outward and upward, one end of one transmission shaft is connected with the output shaft of the first motor through the shaft coupling, the other end of one transmission shaft is connected with the same side support plate through bearing, and the other end of the other transmission shaft is connected with the inner wall of the sewage treatment shell through bearing, the transmission roller is fixed on the outer side of the transmission shaft, the third transmission belt is frictionally connected between the two transmission rollers, and the first motor is connected with the programmable controller by wire.

4. The apparatus for treating wastewater from indium refining according to claim 1, wherein: The second valve rod extends through the branch pipe to the outside at both ends, the first valve rod is connected with the inner wall of the branch pipe through a bearing at one end and extends to the outside through the inner wall of the branch pipe at the other end, and the second valve rod and the first valve rod are connected with the branch pipe through a bearing.

5. The apparatus for treating wastewater from indium refining according to claim 2, wherein: The first follow-up mechanism comprises a second cone-shaped wheel fixedly sleeved on the intermediate shaft extending to the outer end of the sewage treatment shell, two support seats fixedly connected with the top end of the sewage treatment shell, and a third pulley fixedly sleeved on the second valve rod extending to the outer end of the branch pipe, the inner part of each of the two support seats is fixedly connected with a second support rod and a first support rod, the second support rod is fixedly sleeved with a first cone-shaped gear meshingly connected with the second cone-shaped wheel at the end close to the second cone-shaped wheel, the second support rod is fixedly sleeved with a second gear at the end away from the second cone-shaped wheel, the first support rod is fixedly sleeved with a fourth pulley at the end close to the third pulley, the third pulley and the fourth pulley are frictionally connected with a second transmission belt, the first support rod is fixedly sleeved with a first gear meshingly connected with the second gear at the end away from the fourth pulley, and the transmission ratio of the second gear and the first gear satisfies that the second valve rod rotates 180° when the intermediate shaft rotates 90°.

6. An apparatus for treating effluent from indium refining according to claim 5, wherein: The second follow-up mechanism comprises a second pulley fixedly sleeved on the end of the second valve rod away from the third pulley and a first pulley fixedly sleeved on the end of the first valve rod extending to the outer end of the branch pipe, and the second pulley and the first pulley are frictionally connected with a first cross transmission belt.

7. The apparatus for treating wastewater from indium refining according to claim 3, wherein: The second filter screen frame is fixedly connected above the third transmission belt inside the sludge cavity, and a plurality of communication holes for communicating the sludge cavity and the sewage cavity are symmetrically arranged inside the sewage treatment shell between the sludge cavity and the sewage cavity.

8. An apparatus for treating effluent from indium refining according to claim 7, wherein: The ring plate is fixedly connected inside the communication hole close to the sewage cavity side, the blocking plate is placed inside the communication hole close to the sewage cavity side, and the connecting spring is elastically connected between the ring plate and the blocking plate.

9. A treatment method for the indium refining wastewater treatment apparatus as claimed in any one of claims 1 to 8, characterized by, The method comprises the following steps: S1: when the indium refining sewage is treated, the valve body of the branch pipe close to the second valve rod side is opened, the valve body of the branch pipe close to the first valve rod side is closed, the indium refining sewage enters the space formed by the corresponding sealing plate and the first filter screen frame through the opened branch pipe, is filtered by the first filter screen frame, and is discharged into the sewage cavity through the sewage outlet, and then is discharged through the internally threaded sewage discharge outlet, so that the indium refining sewage is filtered and treated. S2: The impurities in the indium refining wastewater are intercepted by the first filter screen frame and accumulated on the pressure sensor in the corresponding space. When the pressure signal sensed by the pressure sensor reaches the set value, a signal is transmitted to the programmable controller. The programmable controller controls the second motor to start. The second motor drives the output shaft to rotate, which drives the intermediate shaft to rotate. The intermediate shaft drives the connected first filter screen frame and sealing plate to rotate counterclockwise. When the rotation reaches 90°, the programmable controller controls the second motor to stop driving. At this time, the impurities accumulated on the pressure sensor are pushed by the moving first filter screen frame to the sludge outlet and fall onto the third transmission belt through the sludge outlet. The first motor is started by the programmable controller. The first motor drives the output shaft to rotate, which drives the connected transmission shaft to rotate. The connected transmission roller is driven to rotate by the friction transmission. The connected transmission roller drives the third transmission belt to rotate by friction transmission. The third transmission belt drives the other transmission roller to rotate by friction transmission, conveying the falling impurities to the outside. At the same time, the intermediate shaft drives the second bevel gear to rotate, which drives the first bevel gear to rotate. The first bevel gear drives the second support rod to rotate, which drives the second gear to rotate. The second gear drives the first gear to rotate, which drives the first support rod to rotate. The first support rod drives the fourth pulley to rotate, which drives the second transmission belt to rotate by friction transmission. The second transmission belt drives the third pulley to rotate by friction transmission. The third pulley drives the second valve rod to rotate, which drives the valve body to rotate 180° to close. At the same time, the second valve rod drives the second pulley to rotate, which drives the first cross-type transmission belt to rotate by friction transmission. The first cross-type transmission belt drives the first pulley to rotate in the opposite direction by friction transmission. The first pulley drives the first valve rod to rotate in the opposite direction, which drives the valve body to rotate 180° to open. The indium refining wastewater is filtered and treated through another corresponding space, realizing the non-stop self-cleaning of the indium refining wastewater filtering and treating impurities; S3: When the pressure signal sensed by the pressure sensor in the other space reaches the set value, the programmable controller controls the second motor to start driving the intermediate shaft to rotate clockwise. This reciprocating implementation realizes the continuous filtering and treatment of the indium refining wastewater; S4: In the above process, since the third transmission belt is inclined downward, if the impurities on the third transmission belt contain some wastewater, the wastewater will slide down along the inclination of the third transmission belt under the action of its own gravity. After being filtered by the second filter screen frame, it is discharged into the wastewater chamber through the multiple communication holes, and then discharged through the internally threaded wastewater outlet, avoiding the incomplete treatment of wastewater due to the discharge of impurities together with wastewater; S5: In the above process, since the communication hole is elastically provided with a blocking plate close to one end of the wastewater chamber, the wastewater can only flow from the sludge chamber to the wastewater chamber and cannot flow in the opposite direction, avoiding the outflow of wastewater from the wastewater chamber to the sludge chamber.

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