Sludge thickening device based on gas flotation thickening

Abstract

The present invention relates to the field of sewage treatment and provides a sludge thickening device based on gas flotation thickening. The sludge thickening device comprises: a thickening device body; a gas filling driving member fixedly connected to a lower portion of the left side of a front-end surface of the thickening device body; a sludge collecting bin, wherein the sludge collecting bin is arranged on the right side of the interior of the thickening device body, and a sludge outlet is communicated with the sludge collecting bin; a sewage bin arranged on the right side of the interior of the thickening device body; a bubble separation mechanism arranged on an upper part of the inner side of the thickening device body; and a pressurized gas-dissolution mechanism arranged inside a pressurized gas-dissolution cavity. The present invention achieves full mixing of sewage and gas, can automatically adjust the depth of a telescopic scrape plate along with the water level and adjust the working depth of the telescopic scrape plate, has a good adjusting capacity, and solves the problem that when the water level changes, existing gas flotation thickening devices may easily result in incomplete scraping or scrape away the sewage below, thereby affecting the thickening effect and working efficiency.

Description

A sludge thickening equipment based on flotation thickening Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and in particular to a sludge concentration device based on air flotation concentration. Background Art

[0002] Flotation concentration equipment is often used in the sewage treatment process to concentrate the sewage. Flotation concentration relies on a large number of tiny bubbles attached to the sludge particles, reducing the specific gravity of the particles and forcing them to float. The floating bubbles are then separated from the sewage through a scraper to achieve sewage concentration.

[0003] For example, application number CN201410403050.4 discloses a flotation sludge concentration device, comprising a flotation tank, a water storage tank, and an air dissolving tank. A sludge pipe is provided on one side of the flotation tank, a first conveyor chain is provided above the flotation tank, a second conveyor chain is provided at the bottom of the flotation tank, the first conveyor chain is connected to the second conveyor chain via a third conveyor chain, scrapers are installed on both the first and second conveyor chains, a motor is installed on the flotation tank, the first conveyor chain is connected to the motor, a floating sludge collection hopper is provided on one side of the first conveyor chain, a sedimentation sludge collection hopper is provided below the second conveyor chain, a clean water channel is provided on one side of the floating sludge collection hopper, the flotation tank is connected to the clean water channel via a first water pipe, the clean water channel is connected to the water storage tank, and the flotation tank is connected to the water storage tank via an air dissolving tank. The present invention can effectively improve the concentration effect, has high efficiency, realizes the recycling of clarified water, and reduces production costs.

[0004] However, in existing flotation concentration equipment, the scraper is fixedly connected to the conveyor chain. Therefore, when the water level changes, it is easy for the bubbles to not be scraped away completely or even the sewage below to be scraped away, affecting the concentration effect and work efficiency. At the same time, the existing gas and sewage are dissolved through pressure, which is inefficient, affecting the flotation effect and work efficiency. Summary of the Invention

[0005] In view of this, the present invention provides a sludge thickening equipment based on flotation thickening, which realizes the full mixing of sewage and gas, and at the same time improves the flow rate, realizes the stirring of the water body, makes the gas fully mixed, and better forms small bubbles. The depth of the telescopic scraper can be automatically adjusted according to the water level, reducing the entry of the lower sewage into the sludge collection bin, better controlling the bubble separation effect, and can adjust the buoyancy of the telescopic scraper as needed, adjust the working depth of the telescopic scraper, and has good adjustment ability.

[0006] The present invention provides a purpose and efficacy of a sludge thickening device based on flotation thickening, which specifically includes: a thickening device body;

[0007] an aeration drive member, the aeration drive member being fixedly connected to the lower left portion of the front end surface of the concentrating device body;

[0008] a bubble scraping drive member fixedly connected to an upper rear end surface of the concentration device body;

[0009] A sludge outlet is provided at the lower portion of the rear end surface of the main body of the concentrating device;

[0010] A pressurized gas dissolving chamber, the pressurized gas dissolving chamber being arranged at the lower left side of the main body of the concentration device;

[0011] The bubble floating chamber is arranged on the left side of the concentration equipment body, and the pressurized gas dissolving chamber is connected to the bubble floating chamber through the control valve on the top;

[0012] A separation chamber, the separation chamber being arranged in the middle of the main body of the concentration device;

[0013] A sludge collection bin is provided on the right side of the main body of the concentrating device, and the sludge outlet is connected to the sludge collection bin;

[0014] A sewage tank, the sewage tank being arranged on the right side inside the main body of the concentration equipment;

[0015] A sewage outlet is provided on the right side of the main body of the concentration device and is connected to the sewage tank;

[0016] A bubble separation mechanism, the bubble separation mechanism being arranged on an upper inner side of a main body of the concentration device;

[0017] The pressurized air-dissolving mechanism is arranged inside the pressurized air-dissolving cavity.

[0018] Furthermore, a diversion baffle is fixedly connected to the left side of the main body of the concentration device, and the bubble floating chamber and the separation chamber are separated by the diversion baffle, and openings are provided on the upper and lower sides of the diversion baffle.

[0019] Furthermore, two slow-flow baffles are provided at the bottom of the separation chamber, and the two slow-flow baffles are arranged in a U-shape. The bottom of the slow-flow baffle is connected to the sewage tank through a channel, and a drainage weir plate is provided inside the sewage tank.

[0020] Furthermore, the bottom of the sludge collecting bin is a sloped structure tilted backward, and the bottom of the sludge outlet is flush with the bottom of the slope of the sludge collecting bin.

[0021] Furthermore, the bubble separation mechanism includes:

[0022] a first sprocket, wherein two first sprockets are provided, the two first sprockets being rotatably connected to the upper right portion of the interior of the concentration device body, and the two first sprockets being coaxially fixedly connected to the rotating shaft of the bubble scraping drive member;

[0023] a second sprocket, wherein the second sprocket is provided with two pieces, and the two second sprockets are rotatably connected to the upper right side of the interior of the concentration device body, the second sprocket is located to the left of the first sprocket, and the installation height of the first sprocket is higher than the installation height of the second sprocket;

[0024] The third sprocket is provided with two third sprockets, and the two third sprockets are rotatably connected to the upper right side of the inner body of the concentration equipment. The third sprocket is located on the left side of the second sprocket. The third sprocket and the second sprocket are located at the same horizontal height. The first sprocket, the second sprocket and the third sprocket on the same side are commonly connected by a bubble separation chain. The first sprocket, the second sprocket, the third sprocket and the bubble separation chain together constitute a chain transmission structure;

[0025] A bubble separation inclined plate is provided on the upper right side of the separation chamber, and a bubble separation chain on the top of the bubble separation inclined plate is parallel to the bubble separation inclined plate.

[0026] Furthermore, the bubble separation mechanism also includes:

[0027] Fixed scrapers, which are evenly arranged and fixedly connected between two bubble separation chains;

[0028] a telescopic scraper, the telescopic scraper being slidably connected to the outer side of the fixed scraper;

[0029] The adjustable airbag is fixedly connected to the side of the telescopic scraper, and the adjustable airbag is an inflatable accordion airbag structure.

[0030] Furthermore, the pressurized air dissolving mechanism includes:

[0031] Dissolving air telescopic seats, there are four groups of dissolving air telescopic seats, which are evenly arranged at the bottom of the pressurized dissolving air chamber, and the leftmost one is fixedly connected to the main body of the concentration equipment;

[0032] Dissolving air connecting rods, there are three pairs of dissolving air connecting rods, two connected dissolving air telescopic seats are connected by a pair of dissolving air connecting rods, each pair of dissolving air connecting rods is cross-hinged to form a scissor mechanism, and three groups of scissor structures are connected end to end to form a three-stage scissor structure;

[0033] An air dissolving slider is slidably connected to the inside of the air dissolving telescopic seat and is hinged to the rear end of the air dissolving connecting rod;

[0034] The air-dissolving screw is coaxially fixedly connected to the end of the rotating shaft of the air-adding drive component. The air-dissolving screw is threadedly connected with the air-dissolving slider on the leftmost side to form a screw-nut transmission structure.

[0035] Furthermore, the pressurized air dissolving mechanism also includes:

[0036] A dissolved air rack, the dissolved air rack being fixedly connected to the rear of the dissolved air slider;

[0037] An air-dissolving cam is rotatably connected to the inner side of the rear portion of the air-dissolving telescopic seat, and the air-dissolving cam is an eccentric cylindrical structure;

[0038] The air-dissolving gear is coaxially fixedly connected to the bottom of the air-dissolving cam, and the air-dissolving gear is meshed with the air-dissolving rack to form a gear-rack transmission mechanism;

[0039] The dissolved air sliding seat is slidably connected to the top of the dissolved air telescopic seat. A square frame structure is provided at the rear of the dissolved air sliding seat. The dissolved air cam and the dissolved air sliding seat together form a cam mechanism.

[0040] Furthermore, the pressurized air dissolving mechanism also includes:

[0041] A water inlet pipe, the water inlet pipe is fixedly connected to the upper part of the dissolved air sliding seat, and the water inlet pipe is connected to the external water inlet pipe through a flexible pipe;

[0042] Venturi nozzles are evenly arranged and fixedly connected to the top of the water inlet pipe. The Venturi nozzles are nozzles with a Venturi structure.

[0043] The air inlet pipe is fixedly connected to the inside of the venturi nozzle and is connected to an external air inlet pipe through a flexible pipe.

[0044] Furthermore, the pressurized air dissolving mechanism also includes:

[0045] The air guide plate is a curved umbrella-shaped structure, and the air guide plate is fixedly connected to the outlet of the air intake pipe. Beneficial effects

[0046] The present invention achieves full mixing of sewage and gas, while increasing the flow rate and stirring the water body, so that the gas is fully mixed and small bubbles are better formed. The depth of the telescopic scraper can be automatically adjusted according to the water level, reducing the entry of lower sewage into the sludge collection bin, better controlling the bubble separation effect, and can adjust the buoyancy of the telescopic scraper as needed, adjust the working depth of the telescopic scraper, and have good adjustment capabilities.

[0047] In addition, by adopting a Venturi-structured nozzle and using air guide plates to disperse the gas into the sewage, sufficient mixing of the sewage and the gas is achieved. At the same time, the flow rate is increased, the water body is stirred, the gas is fully mixed, small bubbles are better formed, and sludge concentration is better achieved.

[0048] In addition, the use of a three-stage scissor mechanism and a cam mechanism enables front-to-back and left-to-right sliding water and air intake, achieving full contact between the newly-intake liquid and the water body, promoting the formation of small bubbles, and improving gas utilization and work efficiency.

[0049] In addition, by adopting the telescopic scraper, the depth of the telescopic scraper can be automatically adjusted according to the water level, reducing the entry of lower sewage into the sludge collection bin and better controlling the bubble separation effect. By adopting the adjustable air bag, the buoyancy of the telescopic scraper can be adjusted as needed, and the working depth of the telescopic scraper can be adjusted, which has good adjustment ability. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments are briefly introduced below.

[0051] The drawings described below only relate to some embodiments of the present invention, but are not intended to limit the present invention.

[0052] In the attached figure:

[0053] FIG1 is a schematic diagram of the external structure of a sludge thickening device based on flotation thickening according to an embodiment of the present invention.

[0054] FIG2 is a schematic diagram of the rear structure of a sludge thickening device based on flotation thickening according to an embodiment of the present invention.

[0055] FIG3 is a schematic cross-sectional view of a sludge thickening device based on flotation thickening according to an embodiment of the present invention.

[0056] FIG4 is a schematic cross-sectional view of the AA line of FIG3 of the sludge thickening equipment based on flotation thickening according to an embodiment of the present invention.

[0057] FIG5 is an isometric cross-sectional structural diagram of a sludge thickening device based on flotation thickening according to an embodiment of the present invention.

[0058] FIG6 is an axonometric structural diagram of the bubble separation mechanism of the sludge thickening equipment based on flotation thickening according to an embodiment of the present invention.

[0059] FIG7 is an isometric cross-sectional structural diagram of a bubble separation mechanism of a sludge thickening device based on flotation thickening according to an embodiment of the present invention.

[0060] FIG8 is a schematic diagram of the transmission structure of the dissolved air telescopic seat of the sludge thickening equipment based on flotation thickening according to an embodiment of the present invention.

[0061] FIG9 is a schematic diagram of the air-dissolving connecting rod transmission structure of the sludge thickening equipment based on flotation thickening according to an embodiment of the present invention.

[0062] FIG10 is an isometric cross-sectional structural diagram of a venturi nozzle of a sludge thickening device based on flotation thickening according to an embodiment of the present invention.

[0063] FIG11 is a schematic diagram of the structure of the dissolved air cam of the sludge thickening equipment based on flotation thickening according to an embodiment of the present invention.

[0064] FIG12 is a schematic diagram of the water inlet pipe structure of the sludge thickening equipment based on flotation thickening according to an embodiment of the present invention.

[0065] Reference Signs List

[0066] 1. Concentration equipment body; 101. Pressurized dissolved air chamber; 102. Bubble floating chamber; 103. Diverter baffle; 104. Separation chamber; 105. Bubble separation inclined plate; 106. Drain weir plate; 107. Sewage outlet; 108. Sludge collection chamber; 109. Slow flow baffle; 110. Sludge outlet; 111. Sewage chamber; 2. Aeration drive; 201. Dissolved air screw; 3. Bubble scraping drive; 4. Dissolved air Slider; 401, dissolved air rack; 5, dissolved air connecting rod; 6, dissolved air telescopic seat; 7, dissolved air cam; 701, dissolved air gear; 8, dissolved air sliding seat; 9, water inlet pipe; 901, Venturi nozzle; 10, air inlet pipe; 1001, air guide plate; 11, first sprocket; 12, second sprocket; 13, third sprocket; 14, bubble separation chain; 15, fixed scraper; 16, telescopic scraper; 17, adjustable air bag. DETAILED DESCRIPTION

[0067] Example 1: Please refer to Figures 1 to 5:

[0068] The present invention provides a sludge thickening device based on air flotation thickening, comprising a thickening device body 1;

[0069] The aeration drive member 2 is fixedly connected to the lower left side of the front end surface of the concentration equipment body 1;

[0070] The bubble scraping driving member 3 is fixedly connected to the upper rear end surface of the concentration device body 1;

[0071] The sludge outlet 110 is provided at the lower portion of the rear end surface of the concentrating device body 1;

[0072] The pressurized gas dissolving chamber 101 is arranged at the lower left side of the interior of the concentration device body 1;

[0073] The bubble float chamber 102 is provided on the left side of the concentration device body 1, and the pressurized gas dissolving chamber 101 is connected to the bubble float chamber 102 through the control valve at the top;

[0074] The separation chamber 104 is provided in the middle of the concentration device body 1;

[0075] The sludge collecting chamber 108 is arranged on the right side inside the thickening equipment body 1, and the sludge outlet 110 is connected to the sludge collecting chamber 108;

[0076] The sewage tank 111 is arranged on the right side inside the main body 1 of the concentration device;

[0077] The sewage outlet 107 is arranged on the right side of the concentration equipment body 1 , and the sewage outlet 107 is connected to the sewage tank 111 .

[0078] Among them, a diverter baffle 103 is fixedly connected to the left side of the inside of the concentration equipment body 1, and the bubble floating chamber 102 and the separation chamber 104 are separated by the diverter baffle 103. The diverter baffle 103 is provided with openings at the top and bottom. In use, the bubbles with smaller specific gravity in the bubble floating chamber 102 float to the top and then flow into the separation chamber 104 from the top of the diverter baffle 103. The sewage with larger specific gravity in the bubble floating chamber 102 flows into the separation chamber 104 from the bottom of the diverter baffle 103, realizing phase separation flow, reducing the mixing of bubbles and sewage, and facilitating the separation of sewage and bubbles.

[0079] Among them, two slow-flow baffles 109 are provided at the bottom of the separation chamber 104, and the two slow-flow baffles 109 are arranged in a U-shape. The bottom of the slow-flow baffle 109 is connected to the sewage tank 111 through a channel. A drainage weir plate 106 is provided inside the sewage tank 111. During use, the sewage at the lower part of the separation chamber 104 passes through the slow-flow baffle 109 and enters the sewage tank 111. The sewage flows over the drainage weir plate 106 and is discharged through the sewage outlet 107. The slow-flow baffle 109 effectively reduces the influence of the sewage flow in the separation chamber 104 on the discharged sewage, thereby achieving a better separation effect.

[0080] Among them, the bottom of the sludge collection bin 108 is a sloped structure tilted backward, and the bottom of the sludge outlet 110 is flush with the bottom of the slope of the sludge collection bin 108. By adopting the sloped structure of the sludge collection bin 108, the sludge can be better discharged, thereby improving the sludge discharge efficiency.

[0081] Specific usage and function of this embodiment: In the present invention, gas and sewage enter the pressurized gas dissolving chamber 101, and sewage with small bubbles is formed in the pressurized gas dissolving chamber 101; the sewage with small bubbles enters the bubble floating chamber 102 through the control valve, and the bubbles in the bubble floating chamber 102 with a smaller specific gravity float to the top and then flow into the separation chamber 104 from the top of the diverter baffle 103, and the sewage with a larger specific gravity in the bubble floating chamber 102 flows into the separation chamber 104 from the bottom of the diverter baffle 103, realizing phase separation flow, reducing the mixing of bubbles and sewage, and facilitating the separation of sewage and bubbles. The sewage at the bottom of the separation chamber 104 passes through the slow flow baffle 109 and enters the sewage tank 111, and the sewage overflows the drainage weir plate 106 and is discharged through the sewage outlet 107. The slow flow baffle 109 effectively reduces the influence of the sewage flow in the separation chamber 104 on the discharged sewage, thereby achieving a better separation effect.

[0082] Example 2: Please refer to Figures 6 and 7:

[0083] On the basis of the first embodiment, the present invention provides a sludge thickening device based on flotation thickening, comprising: a bubble separation mechanism, which is arranged at the upper inner portion of a thickening device body 1 .

[0084] Among them, the bubble separation mechanism includes:

[0085] The first sprocket 11 is provided with two pieces in total. The two first sprockets 11 are rotatably connected to the upper right side of the interior of the concentration device body 1. The two first sprockets 11 are coaxially fixedly connected to the rotating shaft of the bubble scraping drive member 3;

[0086] The second sprocket 12 is provided with two pieces. The two second sprockets 12 are rotatably connected to the upper right side of the interior of the concentration device body 1. The second sprocket 12 is located on the left side of the first sprocket 11. The installation height of the first sprocket 11 is higher than the installation height of the second sprocket 12.

[0087] The third sprocket 13 is provided with two third sprockets 13. The two third sprockets 13 are rotatably connected to the upper right side of the interior of the concentration equipment body 1. The third sprocket 13 is located on the left side of the second sprocket 12. The third sprocket 13 and the second sprocket 12 are located at the same horizontal height. The first sprocket 11, the second sprocket 12 and the third sprocket 13 on the same side are commonly connected by a bubble separation chain 14. The first sprocket 11, the second sprocket 12, the third sprocket 13 and the bubble separation chain 14 together constitute a chain transmission structure;

[0088] The bubble separation inclined plate 105 is provided on the upper right side of the separation chamber 104. The bubble separation chain 14 on the top of the bubble separation inclined plate 105 is parallel to the bubble separation inclined plate 105. During use, the bubble scraping drive 3 drives the chain transmission structure composed of the first sprocket 11, the second sprocket 12, the third sprocket 13 and the bubble separation chain 14 to move, scraping the bubbles from the bubble separation inclined plate 105 to the inside of the sludge collection bin 108.

[0089] Wherein, the bubble separation mechanism also includes:

[0090] Fixed scrapers 15, which are evenly arranged and fixedly connected between two bubble separation chains 14;

[0091] The telescopic scraper 16 is slidably connected to the outer side of the fixed scraper 15;

[0092] The adjustable airbag 17 is fixedly connected to the side of the telescopic scraper 16. The adjustable airbag 17 is an inflatable accordion airbag structure. During use, the buoyancy of the telescopic scraper 16 in the water is improved by the adjustable airbag 17, so that the telescopic scraper 16 can automatically adjust the depth of the telescopic scraper 16 according to the water level, reduce the lower sewage from entering the sludge collection bin 108, and better control the bubble separation effect.

[0093] Specific usage and function of this embodiment: In the present invention, the bubble scraping drive 3 drives the chain transmission structure composed of the first sprocket 11, the second sprocket 12, the third sprocket 13 and the bubble separation chain 14 to move, and scrapes the bubbles from the bubble separation inclined plate 105 to the inside of the sludge collection bin 108. At the same time, the buoyancy of the telescopic scraper 16 in the water is increased by the adjustable air bag 17, so that the telescopic scraper 16 can automatically adjust the depth of the telescopic scraper 16 according to the water level, reduce the lower sewage from entering the sludge collection bin 108, better control the bubble separation effect, and under the action of the inclined structure of the sludge collection bin 108, the sludge can be better discharged from the sludge outlet 110.

[0094] Example 3: Please refer to Figures 8 to 12:

[0095] On the basis of the first embodiment, the present invention provides a sludge thickening device based on flotation thickening, comprising: a pressurized air dissolving mechanism, which is arranged inside a pressurized air dissolving chamber 101 .

[0096] Among them, the pressurized air dissolving mechanism includes:

[0097] Dissolving air telescopic seat 6, there are four groups of dissolving air telescopic seat 6, four groups of dissolving air telescopic seat 6 are evenly arranged at the bottom of the pressurized dissolving air chamber 101, and the leftmost dissolving air telescopic seat 6 is fixedly connected to the concentration equipment body 1;

[0098] There are three pairs of air-dissolving connecting rods 5, and two connected air-dissolving telescopic seats 6 are connected by a pair of air-dissolving connecting rods 5. Each pair of air-dissolving connecting rods 5 is cross-hinged to form a scissor mechanism. The three groups of scissor structures are connected end to end to form a three-stage scissor structure.

[0099] The air dissolving slider 4 is slidably connected to the inside of the air dissolving telescopic seat 6, and the air dissolving slider 4 is hinged to the rear end of the air dissolving connecting rod 5;

[0100] The air-dissolving screw 201 is coaxially fixedly connected to the end of the rotating shaft of the air-adding drive member 2. The air-dissolving screw 201 is threadedly connected with the air-dissolving slider 4 on the far left to form a screw-nut transmission structure;

[0101] During use, the air-entraining drive 2 drives the air-dissolving slider 4 to slide back and forth through the screw-nut transmission structure, and the air-dissolving slider 4 drives the three-stage scissors-fork structure to deform. The three-stage scissors-fork structure drives the three air-dissolving telescopic seats 6 to slide left and right at the same time, while keeping the distance between the air-dissolving telescopic seats 6 the same.

[0102] Among them, the pressurized air dissolving mechanism also includes:

[0103] The air dissolving rack 401 is fixedly connected to the rear of the air dissolving slider 4;

[0104] The air dissolving cam 7 is rotatably connected to the inner side of the rear portion of the air dissolving telescopic seat 6, and the air dissolving cam 7 is an eccentric cylindrical structure;

[0105] The air dissolving gear 701 is coaxially fixedly connected to the bottom of the air dissolving cam 7, and the air dissolving gear 701 is meshed with the air dissolving rack 401 to form a gear rack transmission mechanism;

[0106] The dissolved air sliding seat 8 is slidably connected to the top of the dissolved air telescopic seat 6. A square frame structure is provided at the rear of the dissolved air sliding seat 8. The dissolved air cam 7 and the dissolved air sliding seat 8 together constitute a cam mechanism. During use, the dissolved air slider 4 drives the dissolved air cam 7 to rotate through the gear rack transmission mechanism while sliding, and the dissolved air cam 7 drives the dissolved air sliding seat 8 to slide back and forth through the cam transmission structure.

[0107] Among them, the pressurized air dissolving mechanism also includes:

[0108] The water inlet pipe 9 is fixedly connected to the upper part of the dissolved air sliding seat 8, and the water inlet pipe 9 is connected to the external water inlet pipe through a flexible pipe;

[0109] Venturi nozzles 901 are evenly arranged and fixedly connected to the top of the water inlet pipe 9. The Venturi nozzles 901 are nozzles with a Venturi structure.

[0110] The air inlet pipe 10 is fixedly connected to the inside of the Venturi nozzle 901. The air inlet pipe 10 is connected to the external air inlet pipe through a flexible pipe. During use, external sewage enters the water inlet pipe 9 through the flexible pipe. After the sewage enters the Venturi nozzle 901, the sewage is accelerated to be ejected under the action of the Venturi tube. At the same time, the gas enters the air inlet pipe 10 through the flexible pipe. Under the action of the Venturi tube, the gas and sewage are mixed and accelerated to be ejected, thereby achieving sufficient mixing of the gas and sewage.

[0111] Among them, the pressurized air dissolving mechanism also includes:

[0112] The air guide plate 1001 is a curved umbrella-shaped structure. The air guide plate 1001 is fixedly connected to the outlet of the air inlet pipe 10. During use, the air guide plate 1001 allows the gas to enter the sewage in a dispersed state, thereby improving the full mixing of the sewage and the gas.

[0113] Specific usage and function of this embodiment: In the present invention, external sewage enters the water inlet pipe 9 through a flexible pipe, the sewage enters the Venturi nozzle 901, and the gas enters the air inlet pipe 10 through the flexible pipe. Under the action of the air guide plate 1001, the gas is dispersed and enters the sewage. At the same time, under the action of the Venturi tube, the gas and sewage are mixed and accelerated to be ejected, thereby achieving full mixing of the gas and sewage; the gas adding drive part 2 drives the dissolved air slider 4 to slide back and forth through the screw nut transmission structure, and the dissolved air slider 4 drives the three-stage scissors structure to deform, and the three-stage scissors structure drives the three-piece dissolved air telescopic seat 6 to slide left and right at the same time, and at the same time, the dissolved air slider 4 drives the dissolved air cam 7 to rotate through the gear rack transmission mechanism while sliding, and the dissolved air cam 7 drives the dissolved air sliding seat 8 to slide back and forth through the cam transmission structure, realizing forward and backward, left and right sliding water inlet and air inlet, ensuring good mixing of sewage and gas. At the same time, the sewage and gas form a certain pressure, and under the action of pressure, the sewage and gas are better mixed to form small bubbles.

Claims

1. A sludge thickening device based on flotation thickening, characterized in that: include: Concentration device body (1); A bubble scraping driving member (3), wherein the bubble scraping driving member (3) is fixedly connected to an upper rear end surface of a concentration device body (1); A sludge outlet (110), the sludge outlet (110) being arranged at a lower portion of a rear end surface of a main body (1) of the concentrating device; The invention is characterized in that the gas-entraining driving member (2) is fixedly connected to the lower left part of the front end surface of the concentration device body (1); A pressurized gas dissolving chamber (101), wherein the pressurized gas dissolving chamber (101) is arranged at the lower left side of the interior of the concentration device body (1); A bubble floating chamber (102), wherein the bubble floating chamber (102) is arranged on the left side of the concentration device body (1), and the pressurized gas dissolving chamber (101) is connected to the bubble floating chamber (102) via a control valve at the top; A separation chamber (104), wherein the separation chamber (104) is arranged in the middle of the concentration device body (1); A sludge collection bin (108), wherein the sludge collection bin (108) is arranged on the right side inside the thickening device body (1), and the sludge outlet (110) is connected to the sludge collection bin (108); A sewage tank (111), wherein the sewage tank (111) is arranged on the right side inside the concentration device body (1); A sewage outlet (107), wherein the sewage outlet (107) is arranged on the right side of the concentration device body (1), and the sewage outlet (107) is connected to the sewage tank (111); A bubble separation mechanism, the bubble separation mechanism being arranged at an upper inner portion of a concentration device body (1); A pressurized air-dissolving mechanism, wherein the pressurized air-dissolving mechanism is arranged inside the pressurized air-dissolving chamber (101).

2. A sludge thickening device based on flotation thickening as claimed in claim 1, characterized in that: A flow dividing baffle (103) is fixedly connected to the left side of the concentration device body (1), and the bubble floating chamber (102) and the separation chamber (104) are separated by the flow dividing baffle (103). The flow dividing baffle (103) is provided with openings at the top and bottom.

3. A sludge thickening device based on flotation thickening as claimed in claim 1, characterized in that: Two slow-flow baffles (109) are arranged at the bottom of the separation chamber (104), and the two slow-flow baffles (109) are arranged in a U-shape. The bottom of the slow-flow baffle (109) is connected to the sewage tank (111) through a channel, and a drainage weir plate (106) is arranged inside the sewage tank (111).

4. A sludge thickening device based on flotation thickening as claimed in claim 1, characterized in that: The bottom of the sludge collection bin (108) is a sloped structure that tilts backwards, and the bottom of the sludge outlet (110) is flush with the bottom of the slope of the sludge collection bin (108).

5. The sludge thickening equipment based on flotation thickening as claimed in claim 1, characterized in that: The bubble separation mechanism comprises: A first sprocket (11), wherein two first sprockets (11) are provided, and the two first sprockets (11) are rotatably connected to the upper right portion of the interior of the concentration device body (1), and the two first sprockets (11) are coaxially fixedly connected to the rotating shaft of the bubble scraping drive member (3); a second sprocket (12), wherein the second sprocket (12) is provided with two pieces in total, and the two second sprockets (12) are rotatably connected to the upper right part of the interior of the concentration device body (1), the second sprocket (12) is located on the left side of the first sprocket (11), and the installation height of the first sprocket (11) is higher than the installation height of the second sprocket (12); a third sprocket (13), wherein the third sprocket (13) is provided with two pieces, the two third sprockets (13) are rotatably connected to the upper right part of the concentration device body (1), the third sprocket (13) is located on the left side of the second sprocket (12), the third sprocket (13) and the second sprocket (12) are located at the same horizontal height, and the first sprocket (11), the second sprocket (12) and the third sprocket (13) on the same side are commonly connected to a bubble separation chain (14) for transmission, and the first sprocket (11), the second sprocket (12), the third sprocket (13) and the bubble separation chain (14) together constitute a chain transmission structure; A bubble separation inclined plate (105), wherein the bubble separation inclined plate (105) is arranged at the upper right portion of the separation chamber (104), and the bubble separation chain (14) on the top of the bubble separation inclined plate (105) is parallel to the bubble separation inclined plate (105).

6. A sludge thickening device based on flotation thickening as claimed in claim 5, characterized in that: The bubble separation mechanism also includes: Fixed scrapers (15), the fixed scrapers (15) being evenly arranged and fixedly connected between two bubble separation chains (14); A telescopic scraper (16), wherein the telescopic scraper (16) is slidably connected to the outer side of the fixed scraper (15); An adjustable airbag (17) having an inflatable accordion-type airbag structure is fixedly connected to a side surface of the telescopic scraper (16).

7. The sludge thickening equipment based on flotation thickening as claimed in claim 1, characterized in that: The pressurized gas dissolving mechanism comprises: A dissolving air telescopic seat (6), wherein the dissolving air telescopic seat (6) is provided in four groups, and the four groups of the dissolving air telescopic seats (6) are evenly arranged at the bottom of the pressurized dissolving air chamber (101), and the leftmost dissolving air telescopic seat (6) is fixedly connected to the concentration device body (1); Dissolving air connecting rods (5), wherein three pairs of the dissolving air connecting rods (5) are provided, and two connected dissolving air telescopic seats (6) are connected via a pair of dissolving air connecting rods (5), and each pair of dissolving air connecting rods (5) are cross-hinged to form a scissor-fork mechanism, and the three groups of scissor-fork structures are connected end to end to form a three-stage scissor-fork structure; An air dissolving slider (4), the air dissolving slider (4) being slidably connected inside the air dissolving telescopic seat (6), and the air dissolving slider (4) being hingedly connected to one end of the rear of the air dissolving connecting rod (5); The air-dissolving screw (201) is coaxially fixedly connected to the end of the rotating shaft of the air-injecting driving member (2), and the air-dissolving screw (201) is threadedly connected to the air-dissolving slider (4) on the far left to form a screw-nut transmission structure.

8. A sludge thickening device based on flotation thickening as claimed in claim 7, characterized in that: The pressurized gas dissolving mechanism also includes: An air dissolving rack (401), wherein the air dissolving rack (401) is fixedly connected to the rear of the air dissolving slider (4); An air dissolving cam (7), the air dissolving cam (7) having an eccentric cylindrical structure is rotatably connected to the inner side of the rear portion of the air dissolving telescopic seat (6); An air dissolving gear (701), wherein the air dissolving gear (701) is coaxially fixedly connected to the bottom of the air dissolving cam (7), and the air dissolving gear (701) meshes with the air dissolving rack (401) to form a gear rack transmission mechanism; The air-dissolving sliding seat (8) is slidably connected to the top of the air-dissolving telescopic seat (6), a square frame structure is provided at the rear of the air-dissolving sliding seat (8), and the air-dissolving cam (7) and the air-dissolving sliding seat (8) together form a cam mechanism.

9. A sludge thickening device based on flotation thickening as claimed in claim 8, characterized in that: The pressurized gas dissolving mechanism also includes: A water inlet pipe (9), the water inlet pipe (9) being fixedly connected to the upper part of the dissolved air sliding seat (8), and the water inlet pipe (9) being connected to an external water inlet pipe via a flexible pipe; Venturi nozzles (901), the Venturi nozzles (901) of the nozzles with a Venturi structure are evenly arranged and fixedly connected to the top of the water inlet pipe (9); An air intake pipe (10), wherein the air intake pipe (10) is fixedly connected to the inside of the Venturi nozzle (901), and the air intake pipe (10) is connected to an external air intake pipe via a flexible pipe.

10. The sludge thickening equipment based on flotation thickening as claimed in claim 9, characterized in that: The pressurized gas dissolving mechanism also includes: An air guide plate (1001), the air guide plate (1001) of the curved umbrella-shaped mechanism is fixedly connected to the outlet of the air intake pipe (10).

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