A device for treating wastewater by circulating water and internal photocatalyst

Abstract

The utility model relates to environmental protection technical field, concretely relates to a circulating water inside photocatalyst sewage treatment device, including sewage tank, the hoist of adaptation installation in the sewage tank inner wall, the fixed connection in the inner surface of sewage tank its cooperation the agitator tank of use of hoist, the filter screen of fixed installation in the inner wall bottom of agitator tank, the feed tank of fixed installation in the top of sewage tank, the distribution rod of fixed installation through bearing in the inner wall of feed tank and the hopper that communicates in the inner chamber of feed tank. The utility model discloses through setting mix uniformity mechanism, not only can drive distribution rod synchronous rotation when the low -speed rotation of stirring rod, also can control distribution rod stop rotation to unload when the stirring rod speed is too fast, prevent instantaneous dosing amount to exceed the upper limit of photocatalytic oxidation capacity, to realize the effect of avoiding the secondary pollution and catalyst deactivation caused by reagent excess, guarantee photocatalytic degradation efficiency simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to a wastewater treatment device with an internal photocatalyst for circulating water. Background Technology

[0002] The internal photocatalyst wastewater treatment device for circulating water can utilize the strong oxidizing active species such as hydroxyl radicals generated by the photocatalyst under light to decompose the recalcitrant organic matter in the circulating water and convert it into harmless CO2, H2O and small molecule inorganic substances, thus avoiding water quality deterioration caused by the accumulation of organic matter.

[0003] In the prior art, a chemical wastewater treatment device using photocatalyst treatment, disclosed in patent publication number CN115180680B, includes a wastewater tank. An inclined partition is fixed in the wastewater tank. An upper rotating shaft and a lower rotating shaft are rotatably provided on the upper and lower parts of the partition, respectively. Each end of the upper and lower rotating shafts is provided with an external pulley. The external pulleys on the same side are connected together by an external belt. Multiple guide vanes are connected between the external belts on both sides. The guide vanes are upwardly curved arc-shaped pieces. A stirring box is fixed at the upper end of the partition. The bottom of the stirring box is in communication with the wastewater tank. A feed box is fixed on the stirring box. During operation, the feed baffle rotates synchronously with the stirring shaft. The faster the stirring speed, the faster the feed speed of the feed baffle. Although this can match the mixing speed of wastewater and wastewater treatment agent with the exposure efficiency, if the feed baffle rotates too fast, the instantaneous dosage will exceed the upper limit of the photocatalytic oxidation capacity. Excessive reagent and high concentration of catalyst will enhance the scattering and absorption of light source, significantly reduce the light transmittance, and ultimately make it difficult for the photocatalyst to be effectively activated, thereby greatly reducing the degradation rate of organic matter. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, this invention provides a wastewater treatment device with an internal photocatalyst for circulating water, which effectively solves the problem in existing technologies where excessively fast feed baffle rotation speed leads to an instantaneous dosage exceeding the upper limit of photocatalytic oxidation capacity.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a wastewater treatment device with an internal photocatalyst for circulating water, including a treatment device body, a wastewater tank, a hoist adapted to be installed on the inner wall of the wastewater tank, a mixing box fixedly connected to the inner surface of the wastewater tank and used in conjunction with the hoist, a filter screen fixedly installed on the bottom of the inner wall of the mixing box, a feed box fixedly installed on the top of the wastewater tank, a distributing rod fixedly installed on the inner wall of the feed box by bearings, and a hopper communicating with the inner cavity of the feed box; The mixing mechanism includes a stirring assembly for bidirectional stirring of wastewater and reagents in the mixing tank, a throttling assembly for automatically controlling the material distribution rod to stop material supply when the stirring assembly rotates too fast, and a limiting assembly for limiting the position of each component in the throttling assembly. The stirring assembly is located inside the stirring tank, the throttling assembly is located outside the material distribution rod, and the limiting assembly is located inside the throttling assembly; The stirring assembly includes a drive rod fixedly connected to the output end of the elevator via a coupling, a first belt sleeved on the outer surface of the drive rod via a pulley, a driven rod sleeved on the outer surface of the other end of the first belt via a pulley, and a first bevel gear fixedly sleeved on the outer surface of the driven rod.

[0006] Furthermore, the stirring assembly also includes a second bevel gear meshing with the outer surface of the first bevel gear, a third bevel gear meshing with the other side of the second bevel gear, a rotating sleeve fixedly connected to the inner surface of the third bevel gear, multiple sets of stirring rods respectively fixedly connected to the driven rod and the outer surface of the rotating sleeve, and a support block fixedly installed on the outer surface of the stirring tank.

[0007] Furthermore, the through end of the driven rod is fixedly installed on the inner wall of the mixing tank by a bearing, the rotating sleeve is rotatably sleeved on the outer surface of the driven rod, a rotating bearing sleeve is installed at the connection between the rotating sleeve and the mixing tank, and the second bevel gear is rotatably connected to the inner surface of the support block.

[0008] Furthermore, the throttling assembly includes a second belt sleeved on the outer end face of the driven rod via a pulley, a mounting cylinder sleeved on the inner surface of the other end of the second belt via a pulley, a counterweight block disposed on the outer side of the mounting cylinder, a crank rod integrally formed on the outer surface of the counterweight block, and a swashplate that slides in contact with the through end of the crank rod.

[0009] Furthermore, the throttling assembly also includes a connecting column fixedly connected to the outer surface of the swashplate, a through groove formed on the outer surface of the crank and used in conjunction with the connecting column, a first friction disc fixedly connected to the through end of the connecting column, and a second friction disc fixedly connected to the through end of the distributing rod and used in conjunction with the first friction disc.

[0010] Furthermore, the first friction disc and the second friction disc are in frictional contact, and the outer surfaces of the crank and the connecting column are in sliding contact with the inner surface of the mounting cylinder.

[0011] Furthermore, the limiting component includes a spring sleeved on the outside of the crank, a sliding disc integrally formed on the outer surface of the swashplate, and a support column fixedly connected to the sewage tank and used to support the mounting cylinder.

[0012] Furthermore, the spring is fixedly installed on the inner wall of the mounting cylinder, and its other end is fixedly connected to the outer surface of the crank. The outer surface of the sliding disc is in sliding contact with the inner wall of the mounting cylinder, and the mounting cylinder is rotatably connected to the inner wall of the support column. The centrifugal force generated when the mounting cylinder rotates at high speed can drive the counterweight and the crank to move outward against the elastic force of the spring, thereby causing the crank to squeeze the connecting column through the swashplate, causing the first friction disc to contract, and finally causing the first friction disc to disengage from the second friction disc, cutting off the rotational power of the material distribution rod.

[0013] The technical solution provided by this utility model has the following advantages compared with the known prior art: This invention, by setting up a mixing mechanism, can not only drive the distributing rod to rotate synchronously when the stirring rod rotates at low speed, but also control the distributing rod to stop rotating and discharging material when the stirring rod rotates too fast, preventing the instantaneous dosage from exceeding the upper limit of photocatalytic oxidation capacity. This achieves the effect of avoiding secondary pollution and catalyst deactivation caused by excessive dosage while ensuring the efficiency of photocatalytic degradation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall internal structure of this utility model; Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the middle; Figure 4 This utility model Figure 2 A magnified structural diagram of a portion of point B in the middle section; Figure 5 This is a schematic diagram of the overall structure of the stirring assembly of this utility model; Figure 6 This is a schematic diagram of the internal structure of the throttling component in this utility model.

[0016] The labels in the diagram represent: 100, processing device body; 110, wastewater tank; 120, elevator; 130, mixing tank; 140, filter screen; 150, feed box; 160, distribution rod; 170, hopper; 200, mixing mechanism; 210, mixing assembly; 211, drive rod; 212, first belt; 213, driven rod; 214, first bevel gear; 215, second bevel gear; 216, ... 217. Three-bevel gear; 218. Rotating sleeve; 219. Stirring rod; 220. Support block; 221. Throttling assembly; 222. Second belt; 222. Mounting cylinder; 223. Counterweight; 224. Crank rod; 225. Swashplate; 226. Connecting column; 227. Through groove; 228. First friction disc; 229. Second friction disc; 230. Limiting assembly; 231. Spring; 232. Sliding disc; 233. Support column. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] The present invention will be further described below with reference to the embodiments.

[0019] Example: A wastewater treatment device with an internal photocatalyst for circulating water, as shown in the attached document. Figure 1 - Appendix Figure 6 ,include, The main body 100 of the treatment device includes a sewage tank 110, an elevator 120 adapted to be installed on the inner wall of the sewage tank 110, a mixing tank 130 fixedly connected to the inner surface of the sewage tank 110 and used in conjunction with the elevator 120, a filter screen 140 fixedly installed on the bottom of the inner wall of the mixing tank 130, a feed box 150 fixedly installed on the top of the sewage tank 110, a material distribution rod 160 fixedly installed on the inner wall of the feed box 150 by bearings, and a hopper 170 communicating with the inner cavity of the feed box 150. It should be noted that the wastewater tank 110 is used to contain the circulating water to be treated, and the elevator 120 is used to lift the wastewater in the wastewater tank 110 to the mixing tank 130. The mixing tank 130 is the core chamber of the photocatalytic reaction, used to carry the mixing and reaction process of wastewater, reagents and photocatalysts. The filter screen 140 is installed to filter the mixture after the reaction, intercepting photocatalyst particles and suspended impurities, so that the purified circulating water flows back to the wastewater tank 110 or is discharged outward. The feed tank 150 is used to temporarily store the reagents put in from the hopper 170. Through the rotation of the internal distributing rod 160, the reagents can be evenly distributed and transported to the mixing tank 130. When the power of the distributing rod 160 is cut off, the supply of reagents stops. The treatment device body 100 is existing technology, and this solution will not describe it in detail. Moreover, those skilled in the art can clearly understand its working principle.

[0020] The mixing mechanism 200 includes a mixing component 210 for bidirectional mixing of wastewater and chemicals in the mixing tank 130, a throttling component 220 that can automatically control the material distribution rod 160 to stop material supply when the mixing component 210 rotates too fast, and a limiting component 230 for limiting the position of each component in the throttling component 220. The stirring assembly 210 is located inside the mixing tank 130, the throttling assembly 220 is located outside the material distribution rod 160, and the limiting assembly 230 is located inside the throttling assembly 220. The stirring assembly 210 includes a drive rod 211 fixedly connected to the output end of the elevator 120 via a coupling, a first belt 212 sleeved on the outer surface of the drive rod 211 via a pulley, a driven rod 213 sleeved on the outer surface of the other end of the first belt 212 via a pulley, and a first bevel gear 214 fixedly sleeved on the outer surface of the driven rod 213.

[0021] Specifically, the stirring assembly 210 also includes a second bevel gear 215 meshing with the outer surface of the first bevel gear 214, a third bevel gear 216 meshing with the other side of the second bevel gear 215, a rotating sleeve 217 fixedly connected to the inner surface of the third bevel gear 216, multiple stirring rods 218 respectively fixedly connected to the outer surfaces of the driven rod 213 and the rotating sleeve 217, and a support block 219 fixedly installed on the outer surface of the stirring box 130.

[0022] It should be explained that when the elevator 120 is running, when it drives the drive rod 211 to rotate through its output end, the drive rod 211, in conjunction with the first belt 212, drives the driven rod 213 to rotate synchronously. This causes the driven rod 213 to drive the first bevel gear 214, the second bevel gear 215, and the third bevel gear 216 to rotate synchronously. Consequently, the first bevel gear 214 and the third bevel gear 216 drive the driven rod 213 and the rotating sleeve 217 to rotate in opposite directions, respectively. Finally, the driven rod 213 and the rotating sleeve 217 drive the stirring rods 218 on their respective outer surfaces to rotate in opposite directions. This bidirectional rotation improves the mixing efficiency of wastewater and chemicals.

[0023] Furthermore, the through end of the driven rod 213 is fixedly installed on the inner wall of the mixing tank 130 by a bearing, the rotating sleeve 217 is rotatably sleeved on the outer surface of the driven rod 213, and a rotating bearing sleeve is installed at the connection between the rotating sleeve 217 and the mixing tank 130. The second bevel gear 215 is rotatably connected to the inner surface of the support block 219.

[0024] Preferably, the throttling assembly 220 includes a second belt 221 sleeved on the outer end face of the driven rod 213 via a pulley, a mounting cylinder 222 sleeved on the inner surface of the other end of the second belt 221 via a pulley, a counterweight 223 disposed on the outer side of the mounting cylinder 222, a crank 224 integrally formed on the outer surface of the counterweight 223, and a swashplate 225 that slides in contact with the through end of the crank 224.

[0025] It should be noted that the throttling assembly 220 also includes a connecting column 226 fixedly connected to the outer surface of the swash plate 225, a through groove 227 opened on the outer surface of the crank 224 and used in conjunction with the connecting column 226, a first friction disc 228 fixedly connected to the through end of the connecting column 226, and a second friction disc 229 fixedly connected to the through end of the feed distribution rod 160 and used in conjunction with the first friction disc 228.

[0026] Furthermore, the first friction disc 228 and the second friction disc 229 are in frictional contact, and the outer surfaces of the crank 224 and the connecting column 226 are in sliding contact with the inner surface of the mounting cylinder 222.

[0027] Specifically, the limiting component 230 includes a spring 231 sleeved on the outside of the crank 224, a sliding plate 232 integrally formed on the outer surface of the swashplate 225, and a support column 233 fixedly connected to the sewage tank 110 and used to support the mounting cylinder 222.

[0028] It should be further noted that there are two springs 231. The other spring is fixedly installed on the inner wall of the mounting cylinder 222 and abuts against the sliding disc 232. The driven rod 213 can drive the mounting cylinder 222 to rotate via the second belt 221. When the mounting cylinder 222 is rotating at a low speed, the elastic force of the spring 231 constrains the counterweight 223 and the crank rod 224 to prevent them from shifting. At this time, the first friction disc 228 and the material distribution rod 160 and the second friction disc 229 are... Maintaining frictional contact, the rotational power of the mounting cylinder 222 is transmitted to the distributing rod 160 through friction, thereby enabling the distributing rod 160 to rotate normally for feeding. When the stirring assembly 210 rotates too fast, the rotational speed of the mounting cylinder 222 increases synchronously. The centrifugal force generated by the high-speed rotation of the counterweight 223 can overcome the elastic force of the spring 231, causing the crank rod 224 to slide outward from the mounting cylinder 222. The outwardly moving crank rod 224, by squeezing the inclined crank plate 225, causes the connecting column 226 and the first friction plate 228 to retract inward, ultimately causing the first friction plate 228 to disengage from the second friction plate 229. The distributing rod 160 loses power and stops feeding. When the rotational speed of the stirring assembly 210 drops to the normal range, the centrifugal force decreases, and the crank rod 224 is reset by the reaction force of the spring 231. Then, another spring 231 drives the inclined plate 226 and the first friction plate 228 back to their original positions, re-engaging with the second friction plate 229, allowing the distributing rod 160 to resume feeding.

[0029] Preferably, the spring 231 is fixedly installed on the inner wall of the mounting cylinder 222, and its other end is fixedly connected to the outer surface of the crank 224. The outer surface of the sliding disk 232 is in sliding contact with the inner wall of the mounting cylinder 222, and the mounting cylinder 222 is rotatably connected to the inner wall of the support column 233. The centrifugal force generated when the mounting cylinder 222 rotates at high speed can drive the counterweight 223 and the crank 224 to move outward against the elastic force of the spring 231, thereby causing the crank 224 to squeeze the connecting column 226 through the swashplate 225, which in turn causes the first friction disc 228 to contract, and finally causes the first friction disc 228 to disengage from the second friction disc 229, cutting off the rotational power of the material distribution rod 160.

[0030] When using, In use, the circulating water to be treated is first injected into the sewage tank 110. Photocatalyst and auxiliary agents are added into the feed tank 150 through the hopper 170. Then, the elevator 120 is started, which drives the drive rod 211 to rotate. The drive rod 211 drives the driven rod 213 to rotate through the first belt 212. The driven rod 213 then drives the first bevel gear 214, the second bevel gear 215 and the third bevel gear 216 to rotate synchronously, so that the rotating sleeve 217 rotates in the opposite direction around the outer surface of the driven rod 213. This causes the driven rod 213 and the rotating sleeve 217 to drive their respective marked stirring rods 218 to rotate in opposite directions, so that the sewage and agents in the mixing tank 130 are mixed evenly. At the same time, the driven rod 213 drives the mounting cylinder 222 to rotate through the second belt 221. When the mounting cylinder 222 rotates at low speed, the counterweight 223 and the crank 224 are constrained by the spring 231, so that the first friction disc 228 drives the material distribution rod 160 to rotate through the second friction disc 229 to send the medicine in the feed box 150 into the mixing box 130. When the stirring assembly 210 rotates too fast: the centrifugal force generated by the high-speed rotation of the mounting cylinder 222 causes the counterweight 223 and the crank 224 to move outward against the elastic force of the spring 231. Then, the crank 224 squeezes the swash plate 225, causing the connecting column 226 to contract. Then, the connecting column 226 causes the first friction plate 228 to disengage from the second friction plate 229, thereby stopping the material distribution rod 160 from rotating. After the stirring assembly 210 speed is restored: the reaction force of the spring 231 drives the components in the throttling assembly 220 to reset, so that the material distribution rod 160 restarts to rotate and feed. After the wastewater is reacted, it is filtered through the bottom filter screen 140 of the mixing tank 130, and the purified water is returned to the wastewater tank 110 and then discharged.

[0031] In summary, by setting up the mixing mechanism 200, it can not only drive the distributing rod 160 to rotate synchronously when the stirring rod 218 rotates at low speed, but also control the distributing rod 160 to stop rotating and discharging when the stirring rod 218 rotates too fast, so as to prevent the instantaneous dosage from exceeding the upper limit of photocatalytic oxidation capacity. This achieves the effect of avoiding secondary pollution and catalyst deactivation caused by excessive dosage, while ensuring the efficiency of photocatalytic degradation.

[0032] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A wastewater treatment device with an internal photocatalyst for circulating water, comprising, characterized in that, The main body (100) of the treatment device includes a sewage tank (110), a hoist (120) adapted to be installed on the inner wall of the sewage tank (110), a mixing tank (130) fixedly connected to the inner surface of the sewage tank (110) and used in conjunction with the hoist (120), a filter screen (140) fixedly installed on the bottom of the inner wall of the mixing tank (130), a feed box (150) fixedly installed on the top of the sewage tank (110), a material distribution rod (160) fixedly installed on the inner wall of the feed box (150) by bearings, and a hopper (170) communicating with the inner cavity of the feed box (150). The mixing mechanism (200) includes a mixing component (210) for bidirectional mixing of wastewater and chemicals in the mixing tank (130), a throttling component (220) for automatically controlling the material distribution rod (160) to stop material supply when the rotation speed of the mixing component (210) is too fast, and a limiting component (230) for limiting the position of each component in the throttling component (220). The stirring assembly (210) is located inside the stirring tank (130), the throttling assembly (220) is located outside the material distribution rod (160), and the limiting assembly (230) is located inside the throttling assembly (220). The stirring assembly (210) includes a drive rod (211) fixedly connected to the output end of the elevator (120) via a coupling, a first belt (212) sleeved on the outer surface of the drive rod (211) via a pulley, a driven rod (213) sleeved on the outer surface of the other end of the first belt (212) via a pulley, and a first bevel gear (214) fixedly sleeved on the outer surface of the driven rod (213).

2. The wastewater treatment device with an internal photocatalyst for circulating water according to claim 1, characterized in that, The stirring assembly (210) further includes a second bevel gear (215) meshing with the outer surface of the first bevel gear (214), a third bevel gear (216) meshing with the other side of the second bevel gear (215), a rotating sleeve (217) fixedly connected to the inner surface of the third bevel gear (216), multiple stirring rods (218) respectively fixedly connected to the outer surfaces of the driven rod (213) and the rotating sleeve (217), and a support block (219) fixedly installed on the outer surface of the stirring box (130).

3. The wastewater treatment device with an internal photocatalyst for circulating water according to claim 2, characterized in that, The through end of the driven rod (213) is fixedly installed on the inner wall of the mixing tank (130) by a bearing. The rotating sleeve (217) is rotatably sleeved on the outer surface of the driven rod (213). A rotating bearing sleeve is installed at the connection between the rotating sleeve (217) and the mixing tank (130). The second bevel gear (215) is rotatably connected to the inner surface of the support block (219).

4. The wastewater treatment device with an internal photocatalyst for circulating water according to claim 3, characterized in that, The throttling assembly (220) includes a second belt (221) sleeved on the outer end face of the driven rod (213) via a pulley, a mounting cylinder (222) sleeved on the inner surface of the other end of the second belt (221) via a pulley, a counterweight (223) disposed on the outer side of the mounting cylinder (222), a crank (224) integrally formed on the outer surface of the counterweight (223), and a swashplate (225) that slides in contact with the through end of the crank (224).

5. The circulating water internal photocatalyst wastewater treatment device according to claim 4, characterized in that, The throttling assembly (220) further includes a connecting column (226) fixedly connected to the outer surface of the swash plate (225), a through groove (227) opened on the outer surface of the crank (224) and used in conjunction with the connecting column (226), a first friction disc (228) fixedly connected to the through end of the connecting column (226), and a second friction disc (229) fixedly connected to the through end of the feed bar (160) and used in conjunction with the first friction disc (228).

6. The circulating water internal photocatalyst wastewater treatment device according to claim 5, characterized in that, The first friction disc (228) and the second friction disc (229) are in frictional contact, and the outer surfaces of the crank (224) and the connecting column (226) are in sliding contact with the inner surface of the mounting cylinder (222).

7. The wastewater treatment device with an internal photocatalyst for circulating water according to claim 6, characterized in that, The limiting component (230) includes a spring (231) sleeved on the outside of the crank (224), a sliding plate (232) integrally formed on the outer surface of the swashplate (225), and a support column (233) fixedly connected to the sewage tank (110) and used to support the mounting cylinder (222).

8. The wastewater treatment device with an internal photocatalyst for circulating water according to claim 7, characterized in that, The spring (231) is fixedly installed on the inner wall of the mounting cylinder (222), and its other end is fixedly connected to the outer surface of the crank (224). The outer surface of the sliding disk (232) is in sliding contact with the inner wall of the mounting cylinder (222), and the mounting cylinder (222) is rotatably connected to the inner wall of the support column (233). The centrifugal force generated when the mounting cylinder (222) rotates at high speed can drive the counterweight (223) and the crank (224) to move outward against the elastic force of the spring (231), so that the crank (224) squeezes the connecting column (226) through the swashplate (225), causing the first friction disc (228) to contract, and finally causing the first friction disc (228) to disengage from the second friction disc (229), cutting off the rotational power of the material distribution rod (160).

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