A photocatalytic degradation device capable of recovering powdered catalyst and its use method

Abstract

A photocatalytic degradation device capable of recycling powdered catalyst and its use method. The photocatalytic degradation device comprises an outer housing, an inner housing, a second rotating device, and a recovery device. The inner housing is coaxially rotatably connected to the outer housing, the top of the inner housing being located above the outer housing, and the output end of the second rotating device is connected to the top of the inner housing. The inner housing is equipped with a degradation device for degrading wastewater. The top of the inner housing is provided with an inlet for the recovery device to pass through. The recovery device is equipped with a sponge for absorbing the powdered photocatalyst. The recovery device is provided with a water intake port and a water outlet port. The water intake port is larger than the size of the powdered photocatalyst, and the water outlet is smaller than the size of the powdered photocatalyst. This design not only has a high recycling rate, but also a high degradation rate and is easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of wastewater treatment equipment, and in particular to a photocatalytic degradation device capable of recovering a powdered catalyst and a method for using the device. Background Art

[0002] As a new modern method for treating organic pollution, photocatalytic technology has the significant advantages of low energy consumption, mild reaction conditions, no secondary pollution and high removal rate. It has become an organic wastewater treatment method that has been widely studied and applied in recent years. The photocatalytic degradation methods currently on the market all adopt the most traditional immersion method, in which powdered photocatalysts are immersed in wastewater, and the photocatalysts come into contact with the wastewater and degrade the wastewater. After the degradation of the wastewater is completed, a large amount of photocatalyst will remain in the treated wastewater, resulting in waste of photocatalysts. Therefore, the photocatalyst needs to be recovered. The current method for recovering powdered photocatalysts is generally to recover them by precipitation. This method can recover some photocatalysts, but the recovery rate is low and the processing time is long. Summary of the Invention

[0003] The purpose of the present invention is to overcome the defects and problems of low recycling rate in the prior art and to provide a photocatalytic degradation device for recyclable powder catalyst with high recycling rate and a method for using the same.

[0004] To achieve the above objectives, the technical solution of the present invention is: a photocatalytic degradation device with recyclable powder catalyst, comprising an outer box, an inner box, a second rotating device, and a recovery device, the inner box being coaxially connected to the outer box, the top of the inner box being located above the outer box, the output end of the second rotating device being connected to the top of the inner box, a degradation device for degrading wastewater being installed on the inner box, an inlet for the recovery device to pass through being provided on the top of the inner box, a sponge for absorbing powder photocatalyst being installed in the recovery device, a water intake port and a drain port being provided on the recovery device, the size of the water intake port being larger than the size of the powder photocatalyst, and the size of the drain port being smaller than the size of the powder photocatalyst.

[0005] The degradation device includes a wastewater tank, a first rotating device, a drainage tank, ultraviolet lamps, and a wastewater detector. The inner box body includes an upper cover and a lower shell. The lower shell is located directly below the upper cover and is connected to the upper cover by bolts. The output port of the wastewater tank is connected to the upper cover through a connecting pipe, and a first control valve is installed on the connecting pipe. The upper cover is provided with a feed port. The first rotating device is installed on the top of the upper cover, and the output end of the first rotating device passes through the upper cover and is located inside the lower shell. The ultraviolet lamps are distributed around the first rotating device. The bottom of the lower shell is connected to a drain pipe, and the drain pipe passes through the outer box body and is connected to the drainage tank. An installation device is provided on the inner wall of the lower shell. The installation device includes a bottom plate, a first baffle, a second baffle, a third baffle, and an installation plate. The bottom plate is horizontally connected to the inner wall of the lower shell, and the installation plate is vertically connected to the upper side of the bottom plate. The first baffle and the second baffle are connected to the installation plate at intervals in the vertical direction. The third baffle is vertically connected to the upper side of the installation plate and is respectively connected to the first baffle and the second baffle. The bottom plate, the first baffle, the second baffle, the third baffle, and the installation plate enclose an installation groove for storing the thin film photocatalyst. The wastewater detector is arranged relative to the top, middle, and bottom of the lower shell.

[0006] The recovery device includes a pneumatic gripper, a slider, a telescopic rod, and a recovery box. The slider is slidably connected to the connecting rod. The connecting rod is located above the inner box body. The telescopic rod is connected to the lower side of the slider. The pneumatic gripper is connected to the lower end of the telescopic rod. A hook ring matching the pneumatic gripper is connected to the upper part of the recovery box. A positioning plate and a positioning groove for limiting the recovery box are provided on the inner wall of the inner box body. The positioning groove is located below the positioning plate. The water absorption port includes a first micropore and a third micropore. The drainage port includes a second micropore. The first micropore and the second micropore are located on the left and right sides of the recovery box, and the third micropore is located on the outer side of the recovery box.

[0007] A lid is hinged to the upper end surface of the recovery box. A first clamping plate and a second clamping plate are vertically connected inside the recovery box. Both the first clamping plate and the second clamping plate are in the shape of a king character. The sponge is connected between the first clamping plate and the second clamping plate and is located below the lid. The micropore gap on the side of the sponge close to the second micropore is larger than the micropore gap on the side of the sponge close to the first micropore.

[0008] The bottom of the inner box is connected to a supporting base, a rolling bearing is connected between the supporting base and the outer box, the bottom of the outer box is connected to a base, the upper side of the base is connected to a supporting frame, the upper side of the supporting frame is connected to a connecting rod, the connecting rod is located above the inner box, the first rotating device and the second rotating device are respectively installed on the connecting rod, the drainage box is located in the base, the bottom of the inner box is connected to a drainage valve, the upper end of the drainage pipe is connected to the drainage valve, and the lower end of the drainage pipe passes through the outer box and is connected to the upper side of the drainage box.

[0009] The bottom of the outer box body is connected to a magnetic fluid sealing device, the lower end of the drain pipe passes through the hollow shaft of the magnetic fluid sealing device and is connected to the upper side of the drainage box, the lower side of the drainage box is connected to a water outlet pipe, a filter is provided in the water outlet pipe, and the outer side of the water outlet pipe is connected to a second control valve.

[0010] A water inlet and a water outlet are respectively provided on both sides of the outer box body. The water inlet is connected to a branch pipe, one end of the branch pipe is connected to the connecting pipe through a third control valve, and the water outlet is connected to the input port of the waste water tank through a connecting pipe. A condensing sheet is provided on the inner wall of the outer box body, and a temperature sensor is provided in the inner box body.

[0011] The first rotating device includes a first motor box, a first motor, a first rotating shaft, and a conduit. The first motor box is installed on the connecting rod, and the first motor is installed in the first motor box. One end of the conduit is connected to the outside of the first motor, and the other end of the conduit passes through the top of the inner box and is located inside the inner box. One end of the connecting pipe is connected to one side of the outer box, one end of the first rotating shaft is connected to the output shaft of the first motor through a first coupling, and the other end of the first rotating shaft passes through the conduit and is located inside the inner box. The outer circumferential surface of the first rotating shaft is circumferentially provided with a plurality of fan blades, and the outer circumferential surface of the conduit is sleeved with a lamp holder. The outer circumferential surface of the conduit is threadedly connected to two nuts, and the two nuts respectively abut against the upper and lower sides of the lamp holder, and the ultraviolet lamp is suspended on the lower side of the lamp holder.

[0012] The second rotating device includes a second motor, a second motor box, a second rotating shaft, a first pulley, a second pulley, and a belt. The first pulley is sleeved on the outer circumference of the conduit and connected to the top of the inner box. The second motor box is installed on the connecting rod. The second motor is installed in the second motor box. The output shaft of the second motor passes through the second motor box and is connected to the second rotating shaft through a second coupling. The second pulley is connected to the outer circumference of the second rotating shaft. The belt is wrapped around the outer circumferences of the first pulley and the second pulley.

[0013] A method for using a photocatalytic degradation device capable of recovering a powdered catalyst, the method comprising the following steps:

[0014] Step 1: Open the first control valve and the UV lamp to allow the wastewater in the wastewater tank to enter the inner box through the connecting pipe. After the wastewater is filled, open the feed port and pour the powdered photocatalyst into the inner box. The first rotating device rotates clockwise to allow the powdered photocatalyst to fully contact the wastewater. The wastewater begins to degrade under the irradiation of the UV lamp.

[0015] Step 2: When the degradation time of the wastewater reaches the set time, the wastewater detector in the inner box is used to detect whether the degraded wastewater meets the standard. If it does not meet the standard, the rotation speed of the first rotating device is accelerated for a certain period of time, and then it is tested again by the wastewater detector until it meets the standard; if it meets the standard, the recovery device is placed into the inner box from the box inlet, and the second rotating device is controlled to drive the inner box to rotate clockwise on the outer box. Under the action of centrifugation, the powdered photocatalyst and the wastewater enter the recovery device from the water suction port together, and the powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge. After a certain period of time, the drain valve is opened to discharge the wastewater that meets the standard. Flow out from the drain pipe. When the wastewater in the inner box is completely discharged, the second rotating device is controlled to stop. At this time, the wastewater that meets the degradation standards flows into the drainage box through the drain pipe. When the wastewater that meets the standards is discharged, the first control valve is opened to allow new wastewater in the wastewater tank to enter the inner box. The second rotating device is controlled to drive the inner box to rotate counterclockwise on the outer box. Under the action of centrifugation, the powdered photocatalyst is separated from the sponge and discharged from the water suction port into the inner box to contact with the wastewater. After the powdered photocatalyst is discharged, the second rotating device is controlled to stop rotating. At this time, the first rotating device is controlled to rotate clockwise to perform subsequent wastewater degradation operations;

[0016] Step three: use the wastewater detector in the inner box to detect whether the wastewater to be subsequently degraded meets the standards. If it does not meet the standards and the rotation speed of the first rotating device is accelerated and it is still not up to standard after being detected by the wastewater detector, control the second rotating device to drive the inner box to rotate clockwise on the outer box, and the powdered photocatalyst and wastewater enter the recovery device from the water suction port together, and the powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge. Control the first rotating device to stop and take out the recovery device, take out the powdered photocatalyst in the recovery device, and pour new powdered photocatalyst into the inner box at the feed port, and then the first rotating device rotates clockwise to make the powdered photocatalyst fully contact with the wastewater, and then proceed to the subsequent wastewater degradation steps.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. In the present invention, a photocatalytic degradation device for recyclable powdered catalyst and its use method, a second rotating device drives the inner box to rotate, which can drive the wastewater in the inner box to rotate synchronously. By providing a recovery device, a sponge in the recovery device can absorb the powdered photocatalyst. Since the wastewater flows in one direction, the wastewater can continuously contact the recovery device, thereby realizing the recovery and reuse of the powdered catalyst. By setting the size of the water intake port to be larger than the size of the powdered photocatalyst and the size of the water outlet to be smaller than the size of the powdered photocatalyst, the powdered photocatalyst will not leave through the water outlet after being absorbed by the sponge. Therefore, the present invention has a high recovery rate.

[0019] 2. The present invention relates to a photocatalytic degradation device for recyclable powder catalysts and its method of use. Degradation is performed by using a combination of a thin film photocatalyst and a powder photocatalyst. The powder photocatalyst is fully stirred with wastewater by a first rotating device, and the wastewater is also in contact with the thin film photocatalyst, which greatly accelerates the degradation rate of the wastewater. Since the thin film photocatalyst has a relatively fixed structure, it will not dissolve in the wastewater. A filter screen is provided to filter out the powder photocatalyst that has not been recovered by centrifugation. The outer box is sealed by a magnetic fluid sealing device. The temperature of the wastewater can be obtained by a temperature sensor. Under the action of the condensing sheet on the inner wall of the outer box, the water temperature in the outer box is reduced, thereby reducing the temperature inside the inner box. The wastewater is transported back to the wastewater tank through a connecting pipe, thereby achieving a circulating condensation effect. By adjusting the temperature, the degradation rate of the wastewater is controlled. Therefore, the present invention has a high degradation rate and a high recycling rate.

[0020] 3. In the present invention, a photocatalytic degradation device for recyclable powdered catalyst and its use method, a first motor drives a first rotating shaft to rotate, and a fan blade is provided on the outside of the first rotating shaft to drive the wastewater in the inner box to rotate, thereby fully mixing the wastewater and the powdered photocatalyst; a second rotating device adopts a belt drive method, and the second motor drives the first pulley to rotate, thereby driving the inner box to rotate on the outer box. After the wastewater contacts the recovery box, the powdered photocatalyst inside is adsorbed by the sponge. Since the wastewater flows in one direction, the powdered photocatalyst will continue to be adsorbed on the sponge. When the wastewater is drained, the recovery box can be removed by a pneumatic clamp, and the powdered photocatalyst can be recovered by opening the lid and removing the sponge. Therefore, the present invention has high recovery efficiency and is easy to use.

[0021] 4. In the present invention's photocatalytic degradation device for recovering powdered catalyst and its method of use, the second rotating device can rotate in the reverse direction. During this reverse rotation, the powdered photocatalyst that enters the water inlet and is adsorbed onto the sponge is centrifugally separated from the sponge and discharged from the water inlet, thereby releasing the recovered powdered photocatalyst into the sponge for secondary use. The centrifugal force generated by the rapid rotation of the second rotating device allows for rapid recovery of the powdered photocatalyst. Therefore, the present invention has a high reuse rate, a fast recovery rate, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the inner box body and the outer box body in the present invention.

[0024] Figure 3 yes Figure 2 Enlarged schematic diagram of point A in the middle.

[0025] Figure 4 It is a partial structural diagram of the first rotating device, the second rotating device, and the recovery device in the present invention.

[0026] Figure 5 It is a structural schematic diagram of the first rotating shaft and fan blades in the present invention.

[0027] Figure 6 It is a structural schematic diagram of the installation device in the present invention.

[0028] Figure 7 It is a structural schematic diagram of the recovery device in the present invention.

[0029] Figure 8 It is a structural schematic diagram of the inner box body, positioning plate and positioning groove in the present invention.

[0030] Figure 9 It is a structural schematic diagram of the recycling box in the present invention from one perspective.

[0031] Figure 10 It is a structural schematic diagram of the recycling box in the present invention from another perspective.

[0032] Figure 11 It is a cross-sectional schematic diagram of the recycling box in the present invention from a top view.

[0033] Figure 12 It is a schematic cross-sectional view of the recycling box of the present invention from a side perspective.

[0034] In the figure: outer box 1, inner box 2, first control valve 3, connecting pipe 4, first rotating device 5, first motor box 51, first motor 52, first coupling 53, first rotating shaft 54, fan blade 55, guide tube 56, lamp holder 57, nut 58, second rotating device 6, second motor box 61, second motor 62, second coupling 63, second rotating shaft 64, first pulley 65, second pulley 66, belt 67, ultraviolet lamp 7, mounting device 8, bottom plate 81, first baffle 82, second baffle 83, third baffle 84, mounting plate 85, mounting groove 86, recovery device 9, slider 91, telescopic rod 92, pneumatic clamp 93, recovery box 94, First micropore 941, second micropore 942, third micropore 943, cover 944, first splint 945, second splint 946, hook 95, sponge 96, wastewater detector 10, wastewater tank 11, drain pipe 12, drain tank 13, support base 14, rolling bearing 15, base 16, support frame 17, connecting rod 18, drain valve 19, magnetic fluid sealing device 20, feed port 21, water outlet pipe 22, filter screen 23, second control valve 24, water inlet 25, water outlet 26, branch pipe 27, condenser 28, temperature sensor 29, box inlet 30, positioning plate 31, positioning groove 32, third control valve 33, upper cover 34, lower shell 35. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Example 1

[0036] See also Figures 1 to 12A photocatalytic degradation device for recovering powdered catalysts, comprising an outer box 1, an inner box 2, a second rotating device 6, and a recovery device 9. The inner box 2 is coaxially connected to the outer box 1, the top of the inner box 2 is located above the outer box 1, and the output end of the second rotating device 6 is connected to the top of the inner box 2. A degradation device for degrading wastewater is installed on the inner box 2. An inlet 30 for the recovery device 9 to pass through is provided on the top of the inner box 2. A sponge 96 for absorbing powdered photocatalysts is installed in the recovery device 9. A water intake port and a water outlet are provided on the recovery device 9. The size of the water intake port is larger than that of the powdered photocatalyst, and the size of the water outlet is smaller than that of the powdered photocatalyst.The degradation device includes a wastewater tank 11, a first rotating device 5, a drainage box 13, an ultraviolet lamp 7, and a wastewater detector 10. The inner box body 2 includes an upper cover 34 and a lower shell 35. The lower shell 35 is located directly below the upper cover 34 and is connected to the upper cover 34 by bolts. The output port of the wastewater tank 11 is connected to the upper cover 34 through a connecting pipe 4. The connecting pipe 4 is equipped with a first control valve 3. The upper cover 34 is provided with a feed port 21. The first rotating device 5 is installed on the top of the upper cover 34. The output end of the first rotating device 5 passes through the upper cover 34. The UV lamp 7 is located in the lower shell 35, and the UV lamp 7 is distributed around the first rotating device 5. The bottom of the lower shell 35 is connected with a drain pipe 12, and the drain pipe 12 passes through the outer box 1 and is connected to the drain box 13. The inner wall of the lower shell 35 is provided with a mounting device 8, and the mounting device 8 includes a bottom plate 81, a first baffle 82, a second baffle 83, a third baffle 84 and a mounting plate 85. The bottom plate 81 is horizontally connected to the inner wall of the lower shell 35, and the mounting plate 85 is vertically connected to the upper side of the bottom plate 81. The first baffle 82, the second baffle 83, the third baffle 84 and the mounting plate 85 are connected to the upper side of the bottom plate 81. The baffles 83 are connected to the mounting plate 85 at intervals in the vertical direction. The third baffle 84 is vertically connected to the upper side of the mounting plate 85 and is connected to the first baffle 82 and the second baffle 83 respectively. The bottom plate 81, the first baffle 82, the second baffle 83, the third baffle 84, and the mounting plate 85 are surrounded to form a mounting groove 86 for storing the thin film photocatalyst. The wastewater detector 10 is arranged relative to the top, middle, and bottom of the lower shell 35. The bottom of the inner box 2 is connected to the support base 14, and a rolling bearing is connected between the support base 14 and the outer box 1. 15. The bottom of the outer box 1 is connected to a base 16. The upper side of the base 16 is connected to a support frame 17. The upper side of the support frame 17 is connected to a connecting rod 18. The connecting rod 18 is located above the inner box 2. The first rotating device 5 and the second rotating device 6 are respectively installed on the connecting rod 18. The drain box 13 is located in the base 16. The bottom of the inner box 2 is connected to a drain valve 19. The upper end of the drain pipe 12 is connected to the drain valve 19. The lower end of the drain pipe 12 passes through the outer box 1 and is connected to the upper side of the drain box 13.

[0037] A method for using a photocatalytic degradation device capable of recovering a powdered catalyst, the method comprising the following steps:

[0038] Step 1: Open the first control valve 3 and the ultraviolet lamp 7, allowing the wastewater in the wastewater tank 11 to enter the inner box 2 through the connecting pipe 4. After the wastewater is filled, open the feed port 21 and pour the powdered photocatalyst into the inner box 2. The first rotating device 5 rotates clockwise to ensure that the powdered photocatalyst is fully in contact with the wastewater. The wastewater begins to degrade under the irradiation of the ultraviolet lamp 7.

[0039] Step 2: When the degradation time of the wastewater reaches the set time, the wastewater detector 10 in the inner box 2 is used to detect whether the degraded wastewater meets the standard. If it does not meet the standard, the rotation speed of the first rotating device 5 is accelerated for a certain period of time, and then it is tested again by the wastewater detector 10 until it meets the standard; if it meets the standard, the recovery device 9 is placed into the inner box 2 from the box inlet 30, and the second rotating device 6 is controlled to drive the inner box 2 to rotate clockwise on the outer box 1. Under the action of centrifugation, the powdered photocatalyst and the wastewater enter the recovery device 9 from the water suction port together, and the powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge 96. After a certain period of time, the drain valve 19 is opened to discharge the wastewater that meets the standard from the drain pipe 1 2 outflow, when the wastewater in the inner box 2 is completely discharged, the second rotating device 6 is controlled to stop, at this time, the wastewater that meets the degradation standards flows into the drainage box 13 through the drain pipe 12, and when the wastewater that meets the standards is discharged, the first control valve 3 is opened to allow new wastewater in the wastewater tank 11 to enter the inner box 2, and the second rotating device 6 is controlled to drive the inner box 2 to rotate counterclockwise on the outer box 1. Under the action of centrifugation, the powdered photocatalyst is separated from the sponge 96 and discharged from the water suction port into the inner box 2 to contact with the wastewater. After the powdered photocatalyst is discharged, the second rotating device 6 is controlled to stop rotating, and the recovery device 9 is taken out. At this time, the first rotating device 5 is controlled to rotate clockwise to perform subsequent wastewater degradation operations;

[0040] Step three, use the wastewater detector 10 in the inner box 2 to detect whether the wastewater to be subsequently degraded meets the standards. If it does not meet the standards and the rotation speed of the first rotating device 5 is accelerated and it is still not up to standard after detection by the wastewater detector 10, control the second rotating device 6 to drive the inner box 2 to rotate clockwise on the outer box 1, and the powdered photocatalyst and wastewater enter the recovery device 9 from the water suction port, and the powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge 96. Control the first rotating device 5 to stop and take out the recovery device 9, take out the powdered photocatalyst in the recovery device 9, and pour the new powdered photocatalyst into the inner box 2 at the feed port 21, and then the first rotating device 5 rotates clockwise to make the powdered photocatalyst fully contact with the wastewater, and then proceed to the subsequent wastewater degradation steps. Example 2

[0041] The basic content is the same as Example 1, except that:

[0042] See also Figures 6 to 12, the recycling device 9 includes a pneumatic gripper 93, a slider 91, a telescopic rod 92, and a recycling bin 94. The slider 91 is slidably connected to the connecting rod 18. The telescopic rod 92 is connected to the lower side of the slider 91. The pneumatic gripper 93 is connected to the lower end of the telescopic rod 92. A hook ring 95 matching the pneumatic gripper 93 is connected to the upper part of the recycling bin 94. A positioning plate 31 and a positioning groove 32 for limiting the recycling bin 94 are provided on the inner wall of the inner box body 2. The positioning groove 32 is located below the positioning plate 31. The water absorption port includes a first micropore 941 and a third micropore 943. The drainage port includes a second micropore 942. The first micropore 941 and the second micropore 942 are located on the left and right sides of the recycling bin 94. The third micropore 943 is located on the outer side of the recycling bin 94. A lid 944 is hinged to the upper end surface of the recycling bin 94. A first clamping plate 945 and a second clamping plate 946 are vertically connected inside the recycling bin 94. Both the first clamping plate 945 and the second clamping plate 946 are in the shape of a king character. The sponge 96 is connected between the first clamping plate 945 and the second clamping plate 946 and is located below the lid 944. The micropore gap on the side of the sponge 96 close to the second micropore 942 is larger than the micropore gap on the side of the sponge 96 close to the first micropore 941.

[0043] In step two, the wastewater detector 10 inside the inner box body 2 is used to detect whether the degraded wastewater meets the standard. If it does not meet the standard, the rotation speed of the first motor 52 is increased to accelerate the rotation speed of the first rotating device 5, and then the wastewater detector 10 is used for detection again. If it meets the standard, first control the slider 91 to slide on the connecting rod 18 to place the pneumatic gripper 93 above the recycling bin 94. Control the telescopic rod 92 to descend so that the pneumatic gripper 93 reaches both sides of the hook ring 95 at the upper end of the recycling bin 94, and control the pneumatic gripper 93 to clamp the hook ring 95. Then control the telescopic rod 92 to rise and带动 the slider 91 to slide so that the recycling bin 94 moves above the inlet 30 of the inner box body 2. Then control the telescopic rod 92 to descend so that the recycling bin 94 passes through the positioning plate 31 on the inner wall of the inner box body 2 and finally reaches the positioning groove 32. At this time, the pneumatic gripper 93 is released, and then control the telescopic rod 92 to rise so that the pneumatic gripper 93 leaves the inner box body 2;

[0044] In steps two and three, when it is necessary to take out the recycling device 9, stop the second rotating device 6, manually rotate the inner box body 2 and move the slider 91 so that the pneumatic gripper 93 is directly above the inlet 30 of the inner box body 2. Control the telescopic rod 92 to descend so that the pneumatic gripper 93 descends to both sides of the hook ring 95 at the upper end of the recycling bin 94, and control the pneumatic gripper 93 to clamp the hook ring 95 to take out the recycling bin 94. Example 3

[0045] The basic content is the same as that of Example 1, the difference is:

[0046] See also Figure 2 and Figure 3 The bottom of the outer box 1 is connected to a magnetic fluid sealing device 20. The lower end of the drain pipe 12 passes through the hollow shaft of the magnetic fluid sealing device 20 and is connected to the upper side of the drain box 13. The lower side of the drain box 13 is connected to a water outlet pipe 22. A filter screen 23 is provided in the water outlet pipe 22. A second control valve 24 is connected to the outer side of the water outlet pipe 22. A water inlet 25 and a water outlet 26 are provided on both sides of the outer box 1. The water inlet 25 is connected to a branch pipe 27. One end of the branch pipe 27 is connected to the connecting pipe 4 through a third control valve 33. The water outlet 26 is connected to the input port of the wastewater tank 11 through the connecting pipe 4. A condenser sheet 28 is provided on the inner wall of the outer box 1, and a temperature sensor 29 is provided in the inner box 2.

[0047] In this embodiment, the water inlet 25 of the outer box body 1 is higher than the height of the water outlet 26. When the internal temperature of the inner box body 2 reaches the set value, the temperature sensor 29 will alarm. At this time, the wastewater is transported from the wastewater tank 11 to the third control valve 33 through the connecting pipe 4, and then transported from the right port of the third control valve 33 to the water inlet 25 of the outer box body 1 and enters the outer box body 1. Under the action of the condensing plate 28 on the inner wall of the outer box body 1, the water temperature in the outer box body 1 is reduced, thereby reducing the temperature inside the inner box body 2. When the water level in the outer box body 1 reaches the height of the water outlet 26 of the outer box body 1, the wastewater will automatically flow out and be transported back to the wastewater tank 11 through the connecting pipe 4, thereby realizing circulating condensation. When the internal temperature of the inner box body 2 drops to the set value, the third control valve 33 is closed and the power to the condensing plate 28 is cut off at the same time. Example 4

[0048] The basic content is the same as Example 1, except that:

[0049] See also Figure 4 and Figure 5The first rotating device 5 includes a first motor box 51, a first motor 52, a first rotating shaft 54, and a conduit 56. The first motor box 51 is installed on the connecting rod 18, and the first motor 52 is installed in the first motor box 51. One end of the conduit 56 is connected to the outside of the first motor 52, and the other end of the conduit 56 passes through the top of the inner box 2 and is located inside the inner box 2. One end of the connecting pipe 4 is connected to one side of the outer box 1, and one end of the first rotating shaft 54 ​​is connected to the output shaft of the first motor 52 through a first coupling 53. The other end of the first rotating shaft 54 ​​passes through the conduit 56 and is located inside the inner box 2. The outer circumference of the first rotating shaft 54 ​​is provided with a plurality of fan blades 55 along the circumferential direction, and the outer circumference of the conduit 56 is sleeved with a lamp holder 57. The outer circumference of the conduit 56 is threadedly connected to two nuts 58, which are respectively abutted against the upper and lower sides of the lamp holder 57. The ultraviolet lamp 7 is suspended on the lower side of the lamp holder 57. The second rotating device 6 includes a second motor 62, a second motor box 61, a second rotating shaft 64, a first pulley 65, a second pulley 66, and a belt 67. The first pulley 65 is sleeved on the outer circumference of the conduit 56 and connected to the top of the inner box 2. The second motor box 61 is installed on the connecting rod 18. The second motor 62 is installed in the second motor box 61. The output shaft of the second motor 62 passes through the second motor box 61 and is connected to the second rotating shaft 64 through the second coupling 63. The second pulley 66 is connected to the outer circumference of the second rotating shaft 64. The belt 67 is wrapped around the outer circumference of the first pulley 65 and the second pulley 66.

[0050] In this embodiment, after the recovery device 9 is placed into the inner box body 2, the second rotating shaft 64 is driven to rotate by the action of the second motor 62 output shaft and the second coupling 63, thereby driving the second pulley 66 to rotate. The second pulley 66 drives the first pulley 65 on the top of the inner box body 2 to rotate through the belt 67, thereby rotating the inner box body 2. Under the action of centrifugation, the powdered photocatalyst and wastewater enter the recovery box 94 together from the second micropore 942 and the third micropore 943, and the powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge 96, while the wastewater flows out from the first micropore 941. If the detection does not meet the standard, the speed of the first motor 52 is increased, the rotation of the first rotating shaft 54 ​​is accelerated, and then the wastewater detector 10 is used for detection.

Claims

1. A photocatalytic degradation device capable of recovering powdered catalyst, characterized by: The invention comprises an outer box (1), an inner box (2), a second rotating device (6), and a recovery device (9), wherein the inner box (2) is coaxially connected to the outer box (1), the top of the inner box (2) is located above the outer box (1), the output end of the second rotating device (6) is connected to the top of the inner box (2), a degradation device for degrading wastewater is installed on the inner box (2), an inlet (30) for the recovery device (9) to pass through is provided on the top of the inner box (2), a sponge (96) for absorbing powdered photocatalyst is installed in the recovery device (9), and a water intake port and a water outlet are provided on the recovery device (9), the size of the water intake port is larger than the size of the powdered photocatalyst, and the size of the water outlet is smaller than the size of the powdered photocatalyst.

2. The photocatalytic degradation device for recoverable powdered catalyst according to claim 1, characterized in that: The degradation device comprises a wastewater tank (11), a first rotating device (5), a drainage tank (13), an ultraviolet lamp (7), and a wastewater detector (10). The inner box body (2) comprises an upper cover (34) and a lower shell (35). The lower shell (35) is located directly below the upper cover (34) and is connected to the upper cover (34) by bolts. The output port of the wastewater tank (11) is connected to the upper cover (34) through a connecting pipe (4). The connecting pipe (4) is provided with a first The control valve (3) is provided with a feed port (21) on the upper cover (34), the first rotating device (5) is installed on the top of the upper cover (34), the output end of the first rotating device (5) passes through the upper cover (34) and is located in the lower shell (35), the ultraviolet lamps (7) are distributed around the first rotating device (5), the bottom of the lower shell (35) is connected to a drain pipe (12), and the drain pipe (12) passes through the outer box (1) and is connected to the drainage box (13) is connected, the inner wall of the lower shell (35) is provided with a mounting device (8), the mounting device (8) comprises a bottom plate (81), a first baffle (82), a second baffle (83), a third baffle (84) and a mounting plate (85), the bottom plate (81) is horizontally connected to the inner wall of the lower shell (35), the mounting plate (85) is vertically connected to the upper side of the bottom plate (81), the first baffle (82) and the second baffle (83) are spaced apart in the vertical direction The mounting plate (85), the third baffle (84) is vertically connected to the upper side of the mounting plate (85) and is respectively connected to the first baffle (82) and the second baffle (83); the bottom plate (81), the first baffle (82), the second baffle (83), the third baffle (84), and the mounting plate (85) together form a mounting groove (86) for storing a thin film photocatalyst; the wastewater detector (10) is arranged relative to the top, middle, and bottom of the lower shell (35); The bottom of the inner box body (2) is connected with a support base (14), a rolling bearing (15) is connected between the support base (14) and the outer box body (1), the bottom of the outer box body (1) is connected with a base (16), a support frame (17) is connected to the upper side of the base (16), a connecting rod (18) is connected to the upper side of the support frame (17), the connecting rod (18) is located above the inner box body (2), the first rotating device (5) and the second rotating device (6) are respectively installed on the connecting rod (18), the drainage box (13) is located in the base (16), a drainage valve (19) is connected to the bottom of the inner box body (2), the upper end of the drainage pipe (12) is communicated with the drainage valve (19), and the lower end of the drainage pipe (12) passes through the outer box body (1) and is communicated with the upper side of the drainage box (13).

3. The photocatalytic degradation device for recoverable powdered catalyst according to claim 2, characterized in that: The recovery device (9) includes a pneumatic gripper (93), a slider (91), a telescopic rod (92), and a recovery box (94). The slider (91) is slidably connected to the connecting rod (18), the connecting rod (18) is located above the inner box body (2), the telescopic rod (92) is connected to the lower side of the slider (91), the pneumatic gripper (93) is connected to the lower end of the telescopic rod (92), a hook ring (95) matching the pneumatic gripper (93) is connected to the upper part of the recovery box (94), a positioning plate (31) and a positioning groove (32) for limiting the recovery box (94) are arranged on the inner wall of the inner box body (2), the positioning groove (32) is located below the positioning plate (31), the water absorption port includes a first micropore (941) and a third micropore (943), the drainage port includes a second micropore (942), the first micropore (941) and the second micropore (942) are located on the left and right sides of the recovery box (94), and the third micropore (943) is located on the outer side of the recovery box (94).

4. The photocatalytic degradation device for recovering powdered catalyst according to claim 3, characterized in that: [[ID=,2]]A lid (944) is hinged to the upper end surface of the recovery box (94), a first clamping plate (945) and a second clamping plate (946) are vertically connected inside the recovery box (94), both the first clamping plate (945) and the second clamping plate (946) are in the shape of a king character, a sponge (96) is connected between the first clamping plate (945) and the second clamping plate (946) and is located below the lid (944), and the micropore gap on the side of the sponge (96) close to the second micropore (942) is larger than the micropore gap on the side of the sponge (96) close to the first micropore (941).

5. The photocatalytic degradation device for recoverable powdered catalyst according to claim 2, characterized in that: A magnetorheological fluid sealing device (20) is connected to the bottom of the outer box body (1), the lower end of the drainage pipe (12) passes through the hollow shaft rod of the magnetorheological fluid sealing device (20) and is communicated with the upper side of the drainage box (13), a water outlet pipe (22) is communicated with the lower side of the drainage box (13), a filter screen (23) is arranged in the water outlet pipe (22), and a second control valve (24) is connected to the outer side of the water outlet pipe (22).

6. The photocatalytic degradation device for recoverable powdered catalyst according to claim 2, characterized in that: A water inlet (25) and a water outlet (26) are respectively provided on both sides of the outer box body (1); a branch pipe (27) is connected to the water inlet (25); one end of the branch pipe (27) is connected to the connecting pipe (4) through a third control valve (33); the water outlet (26) is connected to the input port of the waste water tank (11) through the connecting pipe (4); a condensing sheet (28) is provided on the inner wall of the outer box body (1); and a temperature sensor (29) is provided in the inner box body (2).

7. The photocatalytic degradation device for recoverable powdered catalyst according to claim 2, characterized in that: The first rotating device (5) comprises a first motor box (51), a first motor (52), a first rotating shaft (54), and a conduit (56). The first motor box (51) is mounted on the connecting rod (18), the first motor (52) is mounted in the first motor box (51), one end of the conduit (56) is connected to the outside of the first motor (52), the other end of the conduit (56) passes through the top of the inner box (2) and is located inside the inner box (2), one end of the connecting pipe (4) is connected to one side of the outer box (1), and the first rotating shaft (54) is connected to the outer box (1). One end of the first rotating shaft (54) is connected to the output shaft of the first motor (52) through a first coupling (53), and the other end of the first rotating shaft (54) is located inside the inner box (2) after passing through the conduit (56). The outer peripheral surface of the first rotating shaft (54) is provided with a plurality of fan blades (55) along the circumferential direction, and the outer peripheral surface of the conduit (56) is sleeved with a lamp holder (57). The outer peripheral surface of the conduit (56) is threadedly connected to two nuts (58), and the two nuts (58) are respectively in contact with the upper and lower sides of the lamp holder (57), and the ultraviolet lamp (7) is suspended on the lower side of the lamp holder (57).

8. The photocatalytic degradation device for recovering powdered catalyst according to claim 7, characterized in that: The second rotating device (6) includes a second motor (62), a second motor box (61), a second rotating shaft (64), a first pulley (65), a second pulley (66), and a belt (67). The first pulley (65) is sleeved on the outer peripheral surface of the conduit (56) and connected to the top of the inner box (2). The second motor box (61) is installed on the connecting rod (18). The second motor (62) is installed in the second motor box (61). The output shaft of the second motor (62) passes through the second motor box (61) and is connected to the second rotating shaft (64) through a second coupling (63). The second pulley (66) is connected to the outer peripheral surface of the second rotating shaft (64). The belt (67) is wound around the outer peripheral surfaces of the first pulley (65) and the second pulley (66).

9. A method for using the photocatalytic degradation device for recoverable powdered catalyst according to claim 2, characterized in that: The method of use comprises the following steps: Step 1: Open the first control valve (3) and the ultraviolet lamp (7), so that the wastewater in the wastewater tank (11) enters the inner box (2) through the connecting pipe (4). After the wastewater is filled, open the feed port (21), pour the powdered photocatalyst into the inner box (2), and rotate the first rotating device (5) clockwise to make the powdered photocatalyst fully contact with the wastewater. The wastewater begins to degrade under the irradiation of the ultraviolet lamp (7); Step 2: When the degradation time of the wastewater reaches the set time, the wastewater detector (10) in the inner box (2) is used to detect whether the degraded wastewater meets the standard. If it does not meet the standard, the rotation speed of the first rotating device (5) is accelerated for a certain period of time, and then the wastewater detector (10) is used to detect again until it meets the standard. If it meets the standard, the recovery device (9) is placed into the inner box (2) from the box inlet (30), and the second rotating device (6) is controlled to drive the inner box (2) to rotate clockwise on the outer box (1). Under the action of centrifugation, the powdered photocatalyst and the wastewater enter the recovery device (9) from the water intake port together, and the powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge (96). After a certain period of time, the drain valve (19) is opened to discharge the wastewater that meets the standard from the drain pipe (12). Outflow, when the wastewater in the inner box (2) is completely discharged, the second rotating device (6) is controlled to stop, at this time, the wastewater that meets the degradation standards flows into the drainage box (13) through the drainage pipe (12), and when the wastewater that meets the standards is discharged, the first control valve (3) is opened to allow the new wastewater in the wastewater tank (11) to enter the inner box (2), and the second rotating device (6) is controlled to drive the inner box (2) to rotate counterclockwise on the outer box (1). Under the centrifugal effect, the powdered photocatalyst is separated from the sponge (96) and discharged from the water intake port into the inner box (2) to contact with the wastewater. After the powdered photocatalyst is discharged, the second rotating device (6) is controlled to stop rotating, and the recovery device (9) is taken out. At this time, the first rotating device (5) is controlled to rotate clockwise to perform subsequent wastewater degradation operations; Step 3: Detect whether the wastewater to be subsequently degraded meets the standards through the wastewater detector (10) in the inner box (2). If it does not meet the standards and the rotation speed of the first rotating device (5) is accelerated and the wastewater detector (10) is used to detect that it still does not meet the standards, control the second rotating device (6) to drive the inner box (2) to rotate clockwise on the outer box (1), and the powdered photocatalyst and wastewater enter the recovery device (9) from the water suction port. The powdered photocatalyst in the wastewater is adsorbed by the micropores inside the sponge (96). Control the first rotating device (5) to stop and take out the recovery device (9), take out the powdered photocatalyst in the recovery device (9), and pour new powdered photocatalyst into the inner box (2) at the feed port (21). Then, the first rotating device (5) rotates clockwise to make the powdered photocatalyst fully contact with the wastewater, and then proceed to the subsequent wastewater degradation step.

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