A dosing device for sewage treatment

Abstract

A dosing device for sewage treatment comprises: a box body; an elliptical gear flowmeter, a dosing mechanism and a water outlet pipe are fixedly mounted on the box body; the output end of the elliptical gear flowmeter is connected to the water outlet pipe; there are at least two groups of dosing mechanisms, and each group of dosing mechanisms comprises: a proportioning box; the proportioning box is fixedly mounted on the box body, and a proportioning disk is rotatably mounted inside; each proportioning box has a drug outlet through-hole at the bottom end, and is connected to the inside of the water outlet pipe through the drug outlet through-hole; the proportioning disks in each two adjacent dosing mechanisms are connected by transmission through the proportioning mechanism; an elliptical gear rotating shaft in the elliptical gear flowmeter is connected by transmission to a proportioning disk; the present invention drives each dosing mechanism to rotate through the elliptical gear flowmeter, thereby controlling the amount of medicine released by the dosing mechanism according to the flow rate of the sewage, and further making the amount of medicine released by the dosing mechanism proportional through the proportioning mechanism, thereby achieving the control of the amount of medicine put into the sewage and the proportional relationship between different medicines.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, in particular to a dosing device for sewage treatment. Background Art

[0002] Chemical treatment is an important water treatment technology, widely used in sewage treatment facilities such as sewage treatment plants and constructed wetlands. Its working principle is to add chemical agents to the target water body to remove pollutants. For example, alkaline agents such as lime are added to acidic wastewater to neutralize the waste acid, hydroxides are added to wastewater containing heavy metal ions to produce precipitation, coagulants are added to the inlet unit of sewage treatment plants / constructed wetlands to remove particulate pollutants, and disinfectants are added to the deep treatment unit of sewage treatment plants to remove pathogenic microorganisms. The amount of chemical agent used and its mixing degree with the target water body not only affect the cost of the drug, but also the decontamination effect. Therefore, stable and efficient addition of chemicals and rapid mixing of the chemicals are of great significance to promoting the resource utilization of sewage / wastewater.

[0003] Existing dosing devices struggle to achieve uniform mixing of chemicals and water, and even more so, to achieve on-demand dosing. This results in irrational dosing of chemicals, resulting in waste or insufficient dosage, and inability to maximize the effectiveness of chemical treatments. Therefore, the present invention proposes a dosing device for wastewater treatment that not only achieves thorough mixing of multiple chemicals with the target water, but also precisely controls the ratio of chemical dosage to wastewater flow, enhancing the effectiveness of chemical decontamination, improving pollutant removal while reducing operating costs. Summary of the Invention

[0004] The technical solution used in the present invention is: a dosing device for sewage treatment, comprising: a box; an elliptical gear flowmeter, a dosing mechanism and a water outlet pipe are fixedly mounted on the box; the elliptical gear flowmeter is located at the upper end of the box, and the output end is connected to the water outlet pipe;

[0005] The dosing mechanism is provided with at least two groups, and each group of the dosing mechanism comprises: a proportioning box; the proportioning box is fixedly mounted on the box body, and a proportioning disk is rotatably mounted inside the proportioning disk; the proportioning disk is circular, and both end surfaces and the circumferential surface are in sealing contact with the interior of the proportioning box, and at least one groove is provided on the circumferential surface of the proportioning disk; each of the proportioning boxes is provided with a medicine outlet through-hole at the bottom end, and is connected to the interior of the water outlet pipe through the medicine outlet through-hole, and is provided with a medicine inlet through-hole at the upper end, and a medicine storage box is fixedly mounted thereon, and the proportioning box is connected to the interior of the medicine storage box through the medicine inlet through-hole at the upper end;

[0006] The proportioning disks in each two adjacent dosing mechanisms are connected through a proportioning mechanism;

[0007] Any elliptical gear rotating shaft in the elliptical gear flowmeter is drivingly connected to any of the proportioning discs.

[0008] Furthermore, the dosing mechanism is provided with two groups; the proportioning mechanism comprises: a proportioning mounting frame; the proportioning mounting frame is fixedly mounted on any one of the proportioning boxes; a No. 1 pulley is rotatably mounted on the proportioning mounting frame, and a proportioning gear moving shaft is rotatably and slidably mounted on the proportioning mounting frame, and the pulley and the proportioning gear moving shaft are only slidably connected; a No. 2 pulley is fixedly mounted on the rotating shaft of one of the proportioning disks, and a gear transmission shaft is fixedly mounted on the rotating shaft of the other proportioning disk, and the No. 2 pulley and the gear transmission shaft are both rotatably mounted on the corresponding proportioning box; the No. 1 pulley and the No. 2 pulley are connected by a transmission belt;

[0009] At least two driving transmission gears of different sizes are fixedly mounted on the ratio gear moving shaft, and a driven transmission gear matched with each driving transmission gearbox is fixedly mounted on the gear transmission shaft; at most one driving transmission gear is meshed with the corresponding driven transmission gear at the same time;

[0010] A shifting frame is rotatably mounted on the proportioning mounting frame. The shifting frame is provided with a groove, and any one of the active transmission gears is located inside the groove.

[0011] Furthermore, a mixing mechanism is fixedly mounted on the box body; the mixing mechanism comprises: a mixing barrel; each of the proportioning boxes is connected to the interior of the mixing barrel through a medicine outlet hole at its bottom end; a connecting pipe is provided on the side wall of the mixing barrel, and is connected to the interior of the water outlet pipe through the connecting pipe;

[0012] A stirring shaft is rotatably installed inside the mixing barrel, and at least one stirring blade group is fixedly installed on the stirring shaft; a driving device is fixedly installed on the mixing barrel, and the output end of the driving device is fixedly connected to the stirring shaft; a controller is provided on the box body, and the driving device is electrically connected to the controller.

[0013] Furthermore, a sealing disk is fixedly installed inside the mixing barrel, and the sealing disk is sleeved on the stirring shaft and rotates and is sealed with the stirring shaft; the sealing disk is located below the through hole on the side wall of the mixing barrel.

[0014] Furthermore, a No. 1 pipe is fixedly installed inside the box; the output end of the oval gear flowmeter is connected to the water outlet pipe through the No. 1 pipe;

[0015] The box body is provided with a segmented medicine dispensing mechanism; the segmented medicine dispensing mechanism includes: a medicine temporary storage box; the mixing barrel is connected to the interior of the medicine temporary storage box through a connecting pipe on the side wall; a No. 1 medicine outlet pipe is provided below the medicine temporary storage box, and is connected to the water outlet pipe through the No. 1 medicine outlet pipe;

[0016] A water wheel No. 1 is rotatably mounted in the No. 1 pipe, and a baffle No. 1 is fixedly mounted therein. The baffle No. 1 is located above the water wheel No. 1 and covers 51% to 80% of the radial distance of the water wheel No. 1;

[0017] A first slide bar is slidably mounted on the medicine temporary storage box, the upper end of which is located inside the medicine temporary storage box and fixed with a baffle for blocking the first medicine outlet pipe; the first slide bar is elastically connected to the medicine temporary storage box via a spring;

[0018] A cam is rotatably mounted on the medicine temporary storage box. The cam is located directly below the slide bar, and the slide bar abuts against the cam under the action of the spring.

[0019] A pulley is fixedly mounted on each of the first water wheel and the first cam, and the two pulleys are connected via a transmission belt.

[0020] Furthermore, a diversion chamber is fixedly installed inside the box; the output end of the elliptical gear flowmeter is connected to the inside of the diversion chamber;

[0021] The box body is fixedly mounted with a No. 2 pipe and a collecting pipe; the diversion chamber is connected to the water outlet pipe through the No. 1 pipe and the No. 2 pipe;

[0022] A No. 2 water wheel is rotatably mounted in the No. 2 pipe, and a No. 2 baffle is fixedly mounted therein. The No. 2 baffle is located above the No. 2 water wheel and covers 51% to 80% of the radial distance of the No. 2 water wheel.

[0023] A No. 2 medicine outlet pipe is provided below the medicine temporary storage box and is connected to the water outlet pipe through the No. 2 medicine outlet pipe; a No. 2 slide bar is slidably mounted on the medicine temporary storage box and is elastically connected to the No. 2 slide bar through a No. 2 spring; a No. 2 baffle for blocking the No. 2 medicine outlet pipe is fixedly mounted on the No. 2 slide bar; a No. 2 cam is rotatably mounted on the medicine temporary storage box, and the No. 2 cam is located directly below the No. 2 slide bar; the No. 2 slide bar is elastically connected to the No. 2 slide bar under the action of the No. 2 spring;

[0024] The second water wheel and the second cam are both fixedly mounted with a second pulley, and the two second pulleys are connected via a second synchronous belt transmission; the first pipe, the second pipe, the first medicine outlet pipe and the second medicine outlet pipe are all connected to the water outlet pipe via the collecting pipe;

[0025] A baffle is slidably installed inside the diversion chamber, and a moving component is provided for moving the baffle up and down; a partition plate is fixedly installed in the diversion chamber, and the partition plate divides the internal space of the diversion chamber into two spaces, and is provided with a plurality of through holes for connecting the two spaces, and the baffle plate is used to block each through hole on the partition plate; the No. 1 pipe and the No. 2 pipe are respectively located on both sides of the partition plate, and the output end of the elliptical gear flowmeter and the No. 1 pipe are located on the same side of the partition plate.

[0026] Furthermore, the moving assembly includes: a rotating rod; the middle portion of the rotating rod is rotatably mounted inside the diversion chamber, and one end of the rotating rod located above the No. 1 pipe is rotatably mounted with a floating plate, and the other end is elastically connected to the inside of the diversion chamber via a return spring;

[0027] A first gear and a second gear are rotatably mounted on the side wall of the diversion bin, and a lifting pulley is fixedly mounted on the first gear and the second gear; the first gear is located at both ends of the rotating connection between the rotating rod and the diversion bin, and the first gear is located on the side close to the first tube;

[0028] A lifting rack is slidably mounted on the diversion bin, a lifting frame is fixedly mounted on the lifting rack and is meshed with the No. 1 gear, and the lifting frame is sleeved on the outside of the rotating rod; a driving rack is fixedly mounted on the blocking plate, and the No. 2 gear is meshed with the driving rack; the two lifting pulleys are connected by a lifting synchronous belt transmission.

[0029] Furthermore, the No. 2 pipe includes an upper pipe and a lower pipe; the lower end of the upper pipe is fixedly connected to the upper end of the lower pipe, the upper end of the upper pipe is fixedly connected to the box body and communicates with the interior of the diversion chamber; the lower end of the lower pipe is communicated with the interior of the collecting pipe; the No. 2 water wheel is rotatably installed in the upper pipe;

[0030] The diameter of the lower tube is larger than that of the upper tube, and a sphere is provided inside the lower tube. The diameter of the sphere is smaller than that of the lower tube and larger than that of the upper tube. A ball baffle is fixedly installed inside the lower tube, and a plurality of through holes are provided on the ball baffle. The sphere is placed on the ball baffle, and the distance between the center of the sphere and the lower tube is greater than the radius of the sphere.

[0031] Since the present invention adopts the above technical solution, the present invention has the following beneficial effects:

[0032] The present invention drives each dosing mechanism to rotate through an elliptical gear flowmeter, thereby controlling the amount of medicine released by the dosing mechanism according to the flow rate of the sewage, so that the water volume of the sewage and the amount of medicine form a certain ratio. In addition, the present invention uses a proportioning mechanism to make the amount of medicine released by the dosing mechanism proportional, so that each amount of medicine is proportionally added to the sewage, thereby achieving the control of the amount of medicine added to the sewage and the proportional relationship between different medicines;

[0033] The present invention uses the first slide bar and the second slide bar to mix the medicine with the sewage in sections, thereby making the mixing between the medicine and the sewage more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1-Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0035] Figure 3 This is a schematic diagram of the connection relationship between the elliptical gear flowmeter, the dosing mechanism and the segmented dosing mechanism of the present invention.

[0036] Figure 4 This is a schematic diagram of the connection between the dosing mechanism and the proportioning mechanism of the present invention.

[0037] Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure in the middle.

[0038] Figure 6 It is a top view of the connection between the dosing mechanism and the proportioning mechanism of the present invention.

[0039] Figure 7 It is a schematic diagram of the specific structure of the mixing mechanism of the present invention.

[0040] Figure 8 It is a schematic diagram of the internal structure of the box of the present invention.

[0041] Figure 9-10 It is a schematic diagram of the specific structure inside the box of the present invention.

[0042] Figure 11 This is a schematic diagram of the specific structure of the No. 2 pipe of the present invention.

[0043] Figure 12 This is a schematic diagram of the specific structure of the segmented drug delivery mechanism of the present invention.

[0044] Figure 13 This is a schematic diagram of the specific structure of the No. 1 slide bar of the present invention.

[0045] Reference numerals: housing 1; elliptical gear flowmeter 2; dosing mechanism 3; proportioning mechanism 4; mixing mechanism 5; pipe No. 1 6; segmented dosing mechanism 7; outlet pipe 8; water wheel No. 1 9; diversion chamber 10; pipe No. 2 11; water wheel No. 2 12; collecting pipe 13; baffle plate 14; partition plate 15; rotating rod 16; floating plate 17; lifting rack 18; gear No. 1 19; gear No. 2 20; driving rack 21; return spring 22; ball 2 3; proportioning box-31; proportioning plate-32; medicine storage box-33; proportioning mounting frame-41; shifting frame-42; gear moving shaft-43; gear transmission shaft-44; mixing barrel-51; stirring blade assembly-52; stirring shaft-53; sealing plate-54; medicine temporary storage box-71; slide bar No. 1-72; cam No. 1-73; medicine outlet pipe No. 1-74; medicine outlet pipe No. 2-75; slide bar No. 2-76; cam No. 2-77; upper tube-1101; lower tube-1102; ball baffle-1103. DETAILED DESCRIPTION

[0046] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts are within the scope of protection of the present invention.

[0047] Examples, such as Figure 1-13 As shown, a dosing device for sewage treatment includes: a box body 1; an elliptical gear flowmeter 2, a dosing mechanism 3 and a water outlet pipe 8 are fixedly mounted on the box body 1; the elliptical gear flowmeter 2 is located at the upper end of the box body 1, and the output end is connected to the water outlet pipe 8;

[0048] There are two groups of dosing mechanisms 3, each of which includes: a proportioning box 31; the proportioning box 31 is fixedly mounted on the box body 1, and a proportioning disk 32 is rotatably mounted inside; the proportioning disk 32 is circular, and both end surfaces and the circumference are in sealing contact with the interior of the proportioning box 31, and three grooves are provided on the circumference of the proportioning disk 32; each proportioning box 31 has a medicine outlet hole at the bottom end, which is connected to the interior of the water outlet pipe 8 through the medicine outlet hole, and a medicine inlet hole at the upper end, and a medicine storage box 33 is fixedly mounted thereon, and the proportioning box 31 is connected to the interior of the medicine storage box 33 through the medicine inlet hole at the upper end;

[0049] The proportioning disks 32 in each two adjacent dosing mechanisms 3 are connected by a proportioning mechanism 4;

[0050] One of the elliptical gear rotating shafts in the elliptical gear flowmeter 2 is in transmission connection with one of the proportioning discs 32. When using this device, a water pump is used to pump out sewage, and the outlet of the water pump is connected to the inlet of the elliptical gear flowmeter 2 through a pipe. The sewage is then injected into the elliptical gear flowmeter 2 through the water pump. A transmission gear is fixedly mounted on one of the elliptical gear rotating shafts of the elliptical gear flowmeter 2, and a transmission gear is also fixedly mounted on the rotating shaft of one of the proportioning discs 32. The two transmission gears are meshed and connected.

[0051] Before starting to inject sewage into the oval gear flowmeter 2, place medicines into the two medicine storage boxes 33 as needed, and adjust the proportioning mechanism 4 to change the transmission ratio between the two proportioning disks 32 and adjust it to a suitable transmission ratio according to the ratio between the medicines;

[0052] Then, sewage is injected into the elliptical gear flowmeter 2 through the water pump. When the sewage passes through the elliptical gear flowmeter 2, it drives the elliptical gear inside it to rotate, and the proportioning disk 32 connected to it by the drive rotates, and the power is transmitted to the other proportioning disk 32 through the proportioning mechanism 4. During the rotation of the proportioning disk 32, since the two end faces and the circumferential surface of the proportioning disk 32 are in close contact with the inside of the proportioning box 31, and the circumferential surface is provided with a groove, therefore, when the proportioning disk 32 rotates, the medicine inside the medicine storage box 33 falls into the groove on the proportioning disk 32 under the action of gravity, and when the groove containing the medicine rotates to the bottom, the medicine falls out of the proportioning disk 32 under the action of gravity, and finally enters the outlet pipe 8; after passing through the elliptical gear flowmeter 2, the sewage finally enters the outlet pipe 8, thereby achieving the effect of mixing the medicine into the sewage, and the amount of medicine and the amount of water reach a certain ratio, which has a better purification effect.

[0053] Specifically, the proportioning mechanism 4 includes: a proportioning mounting frame 41; the proportioning mounting frame 41 is fixedly mounted on any proportioning box 31; a first pulley is rotatably mounted on the proportioning mounting frame 41, and a proportioning gear moving shaft 43 is rotatably and slidably mounted thereon, and the pulley and the proportioning gear moving shaft 43 are only slidably connected; a second pulley is fixedly mounted on the rotating shaft of one of the proportioning discs 32, and a gear transmission shaft 44 is fixedly mounted on the rotating shaft of the other proportioning disc 32, and the second pulley and the gear transmission shaft 44 are both rotatably mounted on the corresponding proportioning box 31; the first pulley and the second pulley are connected by a transmission belt;

[0054] Three driving transmission gears of different sizes are fixedly mounted on the ratio gear moving shaft 43, and a driven transmission gear that cooperates with each driving transmission gear box is fixedly mounted on the gear transmission shaft 44; at most one driving transmission gear is meshed with the corresponding driven transmission gear at the same time;

[0055] A shift rack 42 is rotatably mounted on the proportioning mounting frame 41, and a groove is provided on the shift rack 42, and the middle active transmission gear is located inside the groove; when it is necessary to adjust the release ratio of the medicines in the two medicine storage boxes 33, the shift rack 42 is slid by hand, and the active transmission gear is driven by the shift rack 42 to slide on the proportioning mounting frame 41, so that the active transmission gear of appropriate size is selected according to needs to engage with the corresponding driven transmission gear, thereby changing the transmission ratio between the two proportioning disks 32, and then changing the ratio of the amount of medicine released in the two medicine storage boxes 33.

[0056] Specifically, a mixing mechanism 5 is fixedly mounted on the box body 1; the mixing mechanism 5 includes a mixing barrel 51; each proportioning box 31 is connected to the interior of the mixing barrel 51 through a medicine outlet hole at its bottom end, and a connecting pipe is provided on the side wall of the mixing barrel 51, which is connected to the interior of the water outlet pipe 8 through the connecting pipe;

[0057] A stirring shaft 53 is rotatably mounted inside the mixing barrel 51, and two stirring blade groups 52 are fixedly mounted on the stirring shaft 53. A driving device is fixedly mounted on the mixing barrel 51, and an output end of the driving device is fixedly connected to the stirring shaft 53. A controller is provided on the housing 1, and the driving device is electrically connected to the controller. After sewage is injected, the driving device is started, and the stirring shaft 53 is driven by the driving device to rotate, thereby driving the two stirring blade groups 52 to rotate. After the medicines in the two medicine storage boxes 33 fall into the mixing barrel 51, the two medicines in the mixing barrel 51 are evenly mixed by the rotation of the two stirring blade groups 52. The driving device is an electric motor.

[0058] A sealing disk 54 is fixedly installed inside the mixing barrel 51 . The sealing disk 54 is sleeved on the stirring shaft 53 and rotates and is sealed with the stirring shaft 53 . The sealing disk 54 is located below the through hole on the side wall of the mixing barrel 51 .

[0059] Specifically, a No. 1 pipe 6 is fixedly installed inside the box 1; the output end of the elliptical gear flowmeter 2 is connected to the water outlet pipe 8 through the No. 1 pipe 6;

[0060] The box 1 is provided with a segmented medicine dispensing mechanism 7; the segmented medicine dispensing mechanism 7 includes: a medicine temporary storage box 71; the mixing barrel 51 is connected to the interior of the medicine temporary storage box 71 through a connecting pipe on the side wall; a No. 1 medicine outlet pipe 74 is provided below the medicine temporary storage box 71, and is connected to the water outlet pipe 8 through the No. 1 medicine outlet pipe 74;

[0061] A water wheel 9 is rotatably mounted in the first pipe 6, and a baffle is fixedly mounted thereon. The baffle is located above the water wheel 9 and covers 51% to 80% of the radial distance of the water wheel 9.

[0062] A first slide bar 72 is slidably mounted on the medicine storage box 71. The upper end of the first slide bar 72 is located inside the medicine storage box 71 and is fixedly mounted with a baffle for blocking the first medicine outlet pipe 74. The first slide bar 72 is elastically connected to the medicine storage box 71 via a spring.

[0063] A cam 73 is rotatably mounted on the medicine temporary storage box 71. The cam 73 is located directly below the slide bar 72. The slide bar 72 is pressed against the cam 73 by a spring.

[0064] A pulley is fixedly installed on the No. 1 water wheel 9 and the No. 1 cam 73, and the two pulleys are connected by a transmission belt; after the medicine is mixed inside the mixing barrel 51, it flows into the medicine temporary storage box 71; the sewage flowing out of the elliptical gear flowmeter 2 enters the No. 1 pipe 6, and when the sewage passes through the No. 1 water wheel 9 in the No. 1 pipe 6, it drives the No. 1 water wheel 9 to rotate, and the No. 1 cam 73 is rotated through the two pulleys and the transmission belt, so that the No. 1 slide bar 72 slides up and down with the cooperation of the spring, and then the baffle on the No. 1 slide bar 72 reciprocates to block the No. 1 medicine outlet pipe 74, so that the medicine flows into the water outlet pipe 8 in sections, making the medicine and sewage mixed more evenly.

[0065] Specifically, a diversion chamber 10 is fixedly installed inside the box 1; the output end of the elliptical gear flowmeter 2 is connected to the inside of the diversion chamber 10;

[0066] The box body 1 is fixedly mounted with a No. 2 pipe 11 and a collecting pipe 13; the diversion chamber 10 is connected to the outlet pipe 8 through the No. 1 pipe 6 and the No. 2 pipe 11;

[0067] A second water wheel 12 is rotatably mounted in the second pipe 11, and a second baffle is fixedly mounted thereon. The second baffle is located above the second water wheel 12 and covers 51% to 80% of the radial distance of the second water wheel.

[0068] A second medicine outlet pipe 75 is provided below the medicine temporary storage box 71 and is connected to the water outlet pipe 8 through the second medicine outlet pipe 75; a second slide bar 76 is slidably mounted on the medicine temporary storage box 71 and elastically connected to the second slide bar 76 via a second spring; a second baffle for blocking the second medicine outlet pipe is fixedly mounted on the second slide bar 76; a second cam 77 is rotatably mounted on the medicine temporary storage box 71 and is located directly below the second slide bar 76; the second slide bar 76 is elastically connected to the second slide bar 76 under the action of the second spring; the second slide bar 76 has the same structure as the first slide bar 72;

[0069] The second water wheel 12 and the second cam 77 are both fixedly mounted with a second pulley, and the two second pulleys are connected by a second synchronous belt transmission; the first pipe 6, the second pipe 11, the first medicine outlet pipe 74 and the second medicine outlet pipe 75 are all connected to the water outlet pipe 8 through the collecting pipe 13;

[0070] A baffle plate 14 is slidably installed inside the diversion chamber 10, and a moving component is provided for moving the baffle plate 14 up and down; a partition plate 15 is fixedly installed inside the diversion chamber 10, and the partition plate 15 divides the internal space of the diversion chamber 10 into two spaces, and is provided with a number of through holes for connecting the two spaces, and the baffle plate 14 is used to block each through hole on the partition plate 15; the No. 1 pipe 6 and the No. 2 pipe 11 are respectively located on both sides of the partition plate 15, and the output end of the elliptical gear flowmeter 2 is located on the same side of the partition plate 15 as the No. 1 pipe 6; the sewage at the output end of the elliptical gear flowmeter 2 flows into the diversion chamber 10, and flows into the No. 1 pipe 6 from the diversion chamber 10. When the injection amount of sewage is too large and exceeds the carrying capacity of the No. 1 pipe 6, the sewage in the diversion chamber 10 does not have time to flow into the No. 1 pipe 6, and under the buoyancy Under the action of , the moving component drives the baffle plate 14 to rise, so that the sewage can flow from the No. 2 pipe 11 into the outlet pipe 8 and be discharged, and when the sewage passes through the No. 2 pipe 11, it drives the No. 2 water wheel 12 to rotate, thereby driving the No. 2 slide bar 76 to reciprocate up and down through the No. 2 cam 77, so that the medicine inside the medicine temporary storage box 71 can flow into the outlet pipe 8 through the No. 2 medicine outlet pipe 75 and mix with the sewage; that is, when the amount of sewage entering the diversion bin 10 through the elliptical gear flowmeter 2 is too large and the No. 1 pipe 6 cannot be discharged in time, the baffle plate 14 rises under the action of buoyancy, so that the sewage can flow into the No. 2 pipe 11, and the sewage in the diversion bin 10 is discharged at the same time through the No. 1 pipe 6 and the No. 2 pipe 11, thereby speeding up the treatment efficiency.

[0071] Specifically, the moving assembly includes: a rotating rod 16; the middle portion of the rotating rod 16 is rotatably mounted inside the diversion chamber 10, and a floating plate 17 is rotatably mounted on one end above the No. 1 pipe 6, and the other end is elastically connected to the inside of the diversion chamber 10 through a return spring 22;

[0072] A first gear 19 and a second gear 20 are rotatably mounted on the side wall of the diversion chamber 10, and a lifting pulley is fixedly mounted on the first gear 19 and the second gear 20; the first gear 19 is located at both ends of the rotation connection between the rotating rod 16 and the diversion chamber 10, and the first gear 19 is located on the side close to the first pipe 6;

[0073] A lifting rack 18 is slidably mounted on the diversion bin 10, a lifting frame is fixedly mounted on the lifting rack 18, and is meshed with the No. 1 gear 19, and the lifting frame is sleeved on the outside of the rotating rod 16; a driving rack 21 is fixedly mounted on the baffle plate 14, and the No. 2 gear 20 is meshed with the driving rack 21; the two lifting pulleys are connected by a lifting synchronous belt transmission; when the sewage inside the diversion bin 10 cannot be discharged from the No. 1 pipe 6 in time, the sewage inside the diversion bin 10 gradually rises, and under the action of buoyancy, the float 17 rises, and the float 1 The lifting rack 18 is driven upward by the elevator on the lifting rack 18. Since the lifting rack 18 is in meshing relationship with the No. 1 gear 19, the lifting rack 18 drives the No. 1 gear 19 to rotate during the rising process, and then drives the No. 2 gear 20 to rotate through the lifting synchronous belt and the two lifting pulleys. During the rotation of the No. 2 gear 20, the driving rack 21 is driven upward to achieve the purpose of driving the blocking plate 14 to move upward, so that the through hole on the partition plate 15 is no longer blocked, and the sewage can flow into the No. 2 pipe 11 and be discharged.

[0074] Specifically, the No. 2 pipe 11 includes an upper pipe 1101 and a lower pipe 1102. The lower end of the upper pipe 1101 is fixedly connected to the upper end of the lower pipe 1102. The upper end of the upper pipe 1101 is fixedly connected to the box body 1 and communicates with the interior of the diversion chamber 10. The lower end of the lower pipe 1102 is communicated with the interior of the collecting pipe 13. The No. 2 water wheel 12 is rotatably mounted in the upper pipe 1101.

[0075] The diameter of the lower tube 1102 is larger than that of the upper tube 1101. A ball 23 is provided inside the lower tube 1102. The diameter of the ball 23 is smaller than that of the lower tube 1102 and larger than that of the upper tube 1101. A ball baffle 1103 is fixedly installed inside the lower tube 1102. The ball baffle 1103 is provided with a plurality of through holes. The ball 23 is placed on the ball baffle 1103, and the distance between the ball center and the lower tube 1102 is greater than the radius of the ball. In the process of sewage flowing from the No. 1 pipe 6 into the outlet pipe 8, since the No. 1 pipe 6 and the No. 2 pipe 11 are connected through the collecting pipe 13, when the No. 1 pipe 6. The rising sewage level will drive the ball 23 in the lower pipe 1102 to rise. Since the diameter of the ball 23 is larger than the diameter of the upper pipe 1101, when the ball 23 contacts the upper pipe 1101, the lower end of the upper pipe 1101 will be blocked, preventing sewage from flowing back into the upper pipe 1101. When the blocking plate 14 rises, the sewage enters from the upper end of the upper pipe 1101, and the ball 23 descends. Since the diameter of the ball 23 is smaller than the diameter of the lower pipe 1102, the ball 23 will not block the lower pipe 1102, and the sewage can pass through the upper pipe 1101 and the lower pipe 1102 to reach the outlet pipe 8.

[0076] Working principle: Before starting to treat sewage, first, the shifting frame 42 is moved to adjust the appropriate active transmission gear to mesh with the corresponding driven transmission gear, thereby establishing a transmission connection between the two proportioning disks 32. Sewage is injected into the elliptical gear flowmeter 2 through the water pump. When the sewage passes through the elliptical gear flowmeter 2, it drives the elliptical gear inside it to rotate, thereby driving the two proportioning disks 32 to rotate. Through the notch on the proportioning disk 32, the medicine in the medicine storage box 33 is sent into the mixing barrel 51. The driving device drives the stirring blade group 52 to rotate, thereby mixing the medicine, and the medicine flows into the medicine temporary storage box 71.

[0077] After passing through the elliptical gear flowmeter 2, the sewage flows into the diversion chamber 10 and then enters the No. 1 pipe 6. When the sewage passes through the No. 1 pipe 6, it drives the No. 1 water wheel 9 to rotate, thereby driving the No. 1 cam 73 to rotate, causing the No. 1 slide bar 72 to move up and down, so that the baffle on the No. 1 slide bar 72 reciprocates to block the No. 1 medicine outlet pipe 74. The medicine inside the medicine temporary storage box 71 enters the collecting pipe 13 in sections and mixes with the sewage, so that the medicine and sewage achieve a better mixing effect. When the amount of sewage injected exceeds the carrying capacity of the No. 1 pipe 6, the water level inside the diversion chamber 10 gradually rises. The second water wheel 12 rotates, so that the second baffle on the second slide bar 76 reciprocates to block the second medicine outlet pipe 75, so that the medicine in the medicine temporary storage box 71 falls into the collecting pipe 13 in sections. That is, when the injection amount of sewage is too large, the sewage flows into the collecting pipe 13 from the inside of the No. 1 pipe 6 and the No. 2 pipe 11 at the same time, and the No. 1 slide bar 72 and the No. 2 slide bar 76 move up and down at the same time to ensure a sufficient supply of medicine, which is finally discharged through the outlet pipe 8.

Claims

1. A dosing device for sewage treatment, characterized in that: include: A box body (1); an elliptical gear flow meter (2), a dosing mechanism (3) and a water outlet pipe (8) are fixedly mounted on the box body (1); the elliptical gear flow meter (2) is located at the upper end of the box body (1), and the output end is connected to the water outlet pipe (8); The dosing mechanism (3) is provided with at least two groups, and each group of the dosing mechanism (3) comprises: a proportioning box (31); the proportioning box (31) is fixedly mounted on the box body (1), and a proportioning disk (32) is rotatably mounted inside the proportioning box (31); the proportioning disk (32) is circular, and both end faces and the circumferential surface are in sealed contact with the interior of the proportioning box (31), and at least one groove is provided on the circumferential surface of the proportioning disk (32); each of the proportioning boxes (31) is provided with a medicine outlet hole at the bottom end, and is connected to the interior of the water outlet pipe (8) through the medicine outlet hole, and is provided with a medicine inlet hole at the upper end, and is fixedly mounted with a medicine storage box (33), and the proportioning box (31) is connected to the interior of the medicine storage box (33) through the medicine inlet hole at the upper end; The proportioning disks (32) in each of two adjacent dosing mechanisms (3) are connected by transmission via a proportioning mechanism (4); Any elliptical gear rotating shaft in the elliptical gear flowmeter (2) is in transmission connection with any proportioning disc (32); A mixing mechanism (5) is fixedly mounted on the box body (1); the mixing mechanism (5) comprises a mixing barrel (51); each of the proportioning boxes (31) is connected to the interior of the mixing barrel (51) via a medicine outlet through-hole at its bottom end, and a connecting pipe is provided on the side wall of the mixing barrel (51); A No. 1 pipe (6) is fixedly installed inside the box (1); the output end of the elliptical gear flowmeter (2) is connected to the water outlet pipe (8) through the No. 1 pipe (6); The box (1) is provided with a segmented medicine dispensing mechanism (7) inside; the segmented medicine dispensing mechanism (7) comprises: a medicine temporary storage box (71); the mixing barrel (51) is connected to the inside of the medicine temporary storage box (71) through a connecting pipe on the side wall; a No. 1 medicine outlet pipe (74) is provided below the medicine temporary storage box (71), and is connected to the water outlet pipe (8) through the No. 1 medicine outlet pipe (74); A water wheel (9) is rotatably mounted in the first pipe (6), and a baffle is fixedly mounted therein. The baffle is located above the water wheel (9) and covers a distance of 51% to 80% of the radial direction of the water wheel (9). A No. 1 slide bar (72) is slidably mounted on the medicine temporary storage box (71), the upper end of the No. 1 slide bar (72) being located inside the medicine temporary storage box (71) and fixedly mounted with a baffle for blocking the No. 1 medicine outlet pipe (74); the No. 1 slide bar (72) is elastically connected to the medicine temporary storage box (71) via a spring; A cam (73) is rotatably mounted on the medicine temporary storage box (71), the cam (73) being located directly below the slide bar (72), and the slide bar (72) abuts against the cam (73) under the action of the spring. A pulley is fixedly mounted on each of the first water wheel (9) and the first cam (73), and the two pulleys are connected via a transmission belt.

2. A dosing device for sewage treatment according to claim 1, characterized in that: The dosing mechanism (3) is provided with two groups; the proportioning mechanism (4) comprises: a proportioning mounting frame (41); the proportioning mounting frame (41) is fixedly mounted on any one of the proportioning boxes (31); a first pulley is rotatably mounted on the proportioning mounting frame (41), and a proportioning gear moving shaft (43) is rotatably and slidably mounted thereon, and the pulley and the proportioning gear moving shaft (43) are only slidably connected; a second pulley is fixedly mounted on the rotating shaft of one of the proportioning disks (32), and a gear transmission shaft (44) is fixedly mounted on the rotating shaft of the other proportioning disk (32), and the second pulley and the gear transmission shaft (44) are both rotatably mounted on the corresponding proportioning box (31); the first pulley and the second pulley are connected via a transmission belt; At least two driving transmission gears of different sizes are fixedly mounted on the ratio gear moving shaft (43), and a driven transmission gear matched with each driving transmission gear box is fixedly mounted on the gear transmission shaft (44); at most one driving transmission gear is meshed with the corresponding driven transmission gear at the same time; A shifting frame (42) is rotatably mounted on the proportioning mounting frame (41), and a groove is provided on the shifting frame (42), and any one of the active transmission gears is located inside the groove.

3. A dosing device for sewage treatment according to claim 1, characterized in that: A stirring shaft (53) is rotatably mounted inside the mixing barrel (51), and at least one stirring blade group (52) is fixedly mounted on the stirring shaft (53); a driving device is fixedly mounted on the mixing barrel (51), and an output end of the driving device is fixedly connected to the stirring shaft (53); a controller is provided on the box (1), and the driving device is electrically connected to the controller.

4. A dosing device for sewage treatment according to claim 3, characterized in that: A sealing disk (54) is fixedly installed inside the mixing barrel (51), and the sealing disk (54) is sleeved on the stirring shaft (53) and rotates and is sealed with the stirring shaft (53); the sealing disk (54) is located below the through hole on the side wall of the mixing barrel (51).

5. A dosing device for sewage treatment according to claim 1, characterized in that: A diversion chamber (10) is fixedly installed inside the box (1); the output end of the elliptical gear flow meter (2) is connected to the inside of the diversion chamber (10); A No. 2 pipe (11) and a collecting pipe (13) are fixedly mounted on the box body (1); the diversion chamber (10) is connected to the water outlet pipe (8) via the No. 1 pipe (6) and the No. 2 pipe (11); A No. 2 water wheel (12) is rotatably mounted in the No. 2 pipe (11), and a No. 2 baffle is fixedly mounted therein. The No. 2 baffle is located above the No. 2 water wheel (12) and covers 51% to 80% of the radial distance of the No. 2 water wheel; A second medicine outlet pipe (75) is provided below the medicine temporary storage box (71), and is connected to the water outlet pipe (8) through the second medicine outlet pipe (75); a second slide bar (76) is slidably mounted on the medicine temporary storage box (71), and is elastically connected to the second slide bar (76) through a second spring; a second baffle for blocking the second medicine outlet pipe is fixedly mounted on the second slide bar (76); a second cam (77) is rotatably mounted on the medicine temporary storage box (71), and the second cam (77) is located directly below the second slide bar (76); the second slide bar (76) is elastically connected to the second slide bar (76) under the action of the second spring; The second water wheel (12) and the second cam (77) are both fixedly mounted with a second pulley, and the two second pulleys are connected via a second synchronous belt transmission; the first pipe (6), the second pipe (11), the first medicine outlet pipe (74) and the second medicine outlet pipe (75) are all connected to the water outlet pipe (8) via the collecting pipe (13); A baffle (14) is slidably installed inside the diversion chamber (10), and a moving assembly for moving the baffle (14) up and down is provided; a partition plate (15) is fixedly installed inside the diversion chamber (10), and the partition plate (15) divides the internal space of the diversion chamber (10) into two spaces, and is provided with a plurality of through holes for connecting the two spaces, and the baffle plate (14) is used to block each through hole on the partition plate (15); the No. 1 pipe (6) and the No. 2 pipe (11) are respectively located on both sides of the partition plate (15), and the output end of the elliptical gear flowmeter (2) and the No. 1 pipe (6) are located on the same side of the partition plate (15).

6. A dosing device for sewage treatment according to claim 5, characterized in that: The moving assembly comprises: a rotating rod (16); the middle portion of the rotating rod (16) is rotatably mounted inside the diversion chamber (10), and one end located above the No. 1 pipe (6) is rotatably mounted with a floating plate (17), and the other end is elastically connected to the inside of the diversion chamber (10) via a return spring (22); A first gear (19) and a second gear (20) are rotatably mounted on the side wall of the diversion chamber (10), and a lifting pulley is fixedly mounted on the first gear (19) and the second gear (20); the first gear (19) is respectively located at both ends of the rotation connection between the rotating rod (16) and the diversion chamber (10), and the first gear (19) is located on the side close to the first tube (6); A lifting rack (18) is slidably mounted on the diversion bin (10), a lifting frame is fixedly mounted on the lifting rack (18) and is meshedly connected with the first gear (19), and the lifting frame is sleeved on the outside of the rotating rod (16); a driving rack (21) is fixedly mounted on the blocking plate (14), and the second gear (20) is meshedly connected with the driving rack (21); the two lifting pulleys are connected by a lifting synchronous belt transmission.

7. A dosing device for sewage treatment according to claim 6, characterized in that: The second pipe (11) comprises an upper pipe (1101) and a lower pipe (1102); the lower end of the upper pipe (1101) is fixedly connected to the upper end of the lower pipe (1102); the upper end of the upper pipe (1101) is fixedly connected to the box (1) and communicates with the interior of the diversion chamber (10); the lower end of the lower pipe (1102) is communicated with the interior of the collecting pipe (13); the second water wheel (12) is rotatably mounted in the upper pipe (1101); The diameter of the lower tube (1102) is larger than that of the upper tube (1101); a sphere (23) is provided inside the lower tube (1102); the diameter of the sphere (23) is smaller than that of the lower tube (1102) and larger than that of the upper tube (1101); a ball baffle (1103) is fixedly installed inside the lower tube (1102); a plurality of through holes are provided on the ball baffle (1103); the sphere (23) is placed on the ball baffle (1103), and the distance between the center of the sphere and the lower tube (1102) is greater than the radius of the sphere.

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