Mixed fluidized bed reactor

Abstract

The utility model discloses a mixing fluidized bed reactor which comprises a box body, a feeding box and a pressure relief assembly, a water inlet pipe is arranged on one side of the box body, the feeding box is arranged on the top of the box body and used for adding reaction materials, and a grinding assembly used for refining the added reaction materials is arranged in the feeding box. The rotating frame moves and drives the compression roller to move to grind granular solid chemical agents on the filter plate, so that the solid chemical agents with large particle sizes are ground and crushed, and the refined solid chemical agents fall into the feeding pipe from filter holes in the surface of the filter plate and enter the box body from the feeding pipe; therefore, the refined solid chemical agent is in contact with the wastewater in the box body for reaction and degradation, the surface area of the solid chemical agent in contact with the wastewater can be increased by the refined solid chemical agent, and the solid chemical agent can be uniformly dispersed in the wastewater after the solid chemical agent is ground and refined. The influence on the wastewater treatment effect caused by accumulation in the wastewater is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and in particular relates to a mixed fluidized bed reactor. Background Art

[0002] A mixed fluidized bed reactor is a device used for wastewater treatment. It improves the efficiency of carbon removal and nitrogen removal by achieving the coexistence of multiple dissolved oxygen zones in the tank. In wastewater treatment, solid chemical agents need to be added and mixed with the wastewater to promote the degradation, transformation and reaction of pollutants in the wastewater.

[0003] Conventionally, when solid chemicals are added into a tank body to react with wastewater, an appropriate amount of granular solid chemicals are added into the tank body through a feed port at the top of the tank body and mixed with the wastewater, thereby degrading and reacting the pollutants in the wastewater. However, when the granular solid chemicals are added into the tank body to react with the wastewater, the added granular solid chemicals have different particle sizes. When a solid chemical that is too large is added into the wastewater, the surface area of ​​the solid chemical with a larger particle size is relatively small, thereby limiting the contact area between the wastewater and the chemical, thereby reducing the reaction rate and the larger solid chemical cannot be evenly dispersed and accumulates in the wastewater, thereby affecting the treatment effect of the wastewater. Utility Model Content

[0004] The purpose of the utility model is to provide a mixed fluidized bed reactor to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical solution: a mixed fluidized bed reactor, comprising:

[0006] A box body, one side of which is provided with a water inlet pipe;

[0007] A feed box, which is arranged on the top of the box body for adding reaction materials, and a rolling assembly for refining the added reaction materials is arranged in the feed box, and a pressing roller is driven by a screw rod of the rolling assembly to move so that the pressing roller rolls and refines the reaction materials in the feed box;

[0008] The pressure relief component is arranged on the top of the box body and is used to timely discharge the gas generated by the reaction of the reaction materials and wastewater in the box body.

[0009] Preferably, the rolling assembly includes a filter plate, the screw rod is rotatably connected to the feed box, a motor is provided on one side of the feed box, the output shaft of the motor rotates through the feed box and is fixedly connected to the screw rod, and the filter plate is arranged at the bottom of the screw rod.

[0010] Preferably, the surface of the screw rod is connected to a rotating frame through a screw rod nut and the top of the rotating frame is slidably connected to a feed box, the pressure roller is rotatably connected to the rotating frame and the bottom of the pressure roller is in contact with a filter plate, a brush is provided at the bottom of the rotating frame and on both sides of the pressure roller, the bottom of the brush is in contact with the filter plate, and the top of the rotating frame is slidably connected to the feed box, thereby enhancing the stability of the movement of the rotating frame.

[0011] Preferably, a feed pipe is provided in the top of the box body and one end of the feed pipe is connected to the feed box, and a discharge pipe is provided at the bottom of the box body.

[0012] Preferably, the pressure relief assembly includes a protective shell and an exhaust pipe, the protective shell is fixedly connected to the box body, the exhaust pipe is arranged in the protective shell and the bottom of the exhaust pipe is connected to the box body, a fixing rod is provided in the exhaust pipe, and a sealing block is provided at the bottom of the fixing rod.

[0013] Preferably, guide rods are provided on both sides of the top of the sealing block, and the other end of the guide rod movably passes through the fixed rod. A spring is sleeved on the surface of the guide rod, and the two ends of the spring are respectively fixedly connected to the fixed rod and the sealing block. When the gas is exhausted, the spring rebounds to drive the sealing block to reset and continue to seal the exhaust port.

[0014] Preferably, exhaust ports are provided on both sides of the exhaust pipe, an exhaust channel is provided between the exhaust pipe and the protective shell, an opening is provided on the top of the protective shell, a first filter plate and a second filter plate are buckled in the opening, a pressure gauge is provided on the surface of the protective shell and one end of the pressure gauge extends into the exhaust pipe, and the exhaust gas can be filtered by the first filter plate and the second filter plate, thereby reducing the pungent odor or harmful substances contained in the exhaust gas.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The granular solid chemical agent is poured into the feed box and the motor is started. The motor drives the screw to rotate, so that the screw drives the rotating frame to move. The rotating frame also drives the pressure roller to move to crush the granular solid chemical agent on the filter plate, so that the solid chemical agent with a larger particle size is crushed. Under the back and forth rolling of the pressure roller, the solid chemical agent with a larger particle size is gradually refined, so that the refined solid chemical agent falls from the filter holes on the surface of the filter plate into the feed pipe and enters the box body from the feed pipe, so that the refined solid chemical agent contacts with the wastewater in the box body to react and degrade. The granular solid chemical agent is crushed by crushing, so that the surface area of ​​the solid chemical agent in contact with the wastewater is increased. After the solid chemical agent is crushed, the solid chemical agent can be evenly dispersed in the wastewater to avoid accumulation in the wastewater and affecting the treatment effect of the wastewater.

[0017] (2) The refined solid chemical agent is reacted and degraded with the wastewater. The chemical agent will release gas during the reaction and degradation. When a large amount of gas is accumulated, the gas squeezes the sealing block into the exhaust pipe to move it, thereby causing the sealing block to move toward the end away from the pressure gauge. At the same time, the sealing block moves, and the two sides of the sealing block are separated from the seal of the exhaust port, so that the gas in the exhaust pipe is discharged into the exhaust channel through the exhaust port and discharged through the opening on the top of the protective shell, thereby timely discharging the gas in the storage tank body and reducing the pressure in the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a cross-sectional view of the utility model;

[0020] Figure 3 It is a structural schematic diagram of the pressure relief assembly of the utility model;

[0021] Figure 4 This is a schematic diagram of installing a grinding roller on the filter plate of the utility model.

[0022] In the figure: 1. box body; 2. water inlet pipe; 3. feed box; 5. screw; 6. pressure roller; 7. pressure relief assembly; 9. filter plate; 10. motor; 11. rotating frame; 12. feed pipe; 13. discharge pipe; 14. protective shell; 15. exhaust pipe; 16. fixing rod; 17. sealing block; 18. guide rod; 19. spring; 20. exhaust port; 21. exhaust channel; 22. opening; 23. first filter plate; 24. second filter plate; 25. pressure gauge; 26. brush; 27 discharge chute; 28. grinding roller. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-4 A mixed fluidized bed reactor is shown, comprising:

[0025] A box body 1, one side of the box body 1 is provided with a water inlet pipe 2, and waste water can be injected into the box body 1 through the water inlet pipe 2;

[0026] A feed box 3, which is arranged on the top of the box body 1 for adding reaction materials. A rolling assembly for refining the added reaction materials is arranged in the feed box 3. The screw rod 5 of the rolling assembly drives the pressing roller 6 to move, so that the pressing roller 6 rolls and refines the reaction materials in the feed box 3;

[0027] The pressure relief component 7 is arranged on the top of the box body 1 and is used to timely discharge the gas generated by the reaction of the reaction materials and the waste water in the box body 1.

[0028] The rolling assembly includes a filter plate 9, the screw rod 5 is rotatably connected to the feed box 3, a motor 10 is provided on one side of the feed box 3, the output shaft of the motor 10 rotates through the feed box 3 and is fixedly connected to the screw rod 5, and the filter plate 9 is provided at the bottom of the screw rod 5.

[0029] The surface of the screw rod 5 is connected to a rotating frame 11 through a screw nut, and the top of the rotating frame 11 is slidably connected to the feed box 3. The pressure roller 6 is rotatably connected to the rotating frame 11, and the bottom of the pressure roller 6 contacts the filter plate 9. Brushes 26 are provided at the bottom of the rotating frame 11 and on both sides of the pressure roller 6. The bottom of the brush 26 contacts the filter plate 9. When the rotating frame 11 moves, it drives the pressure roller 6 to move to crush the granular solid chemical agent on the filter plate 9. The rotating frame 11 can drive the brushes 26 on both sides of the pressure roller 6. The brush 26 is moved to sweep the crushed granular solid chemical on the filter plate 9, so that the solid chemical can be evenly spread on the surface of the filter plate 9, and the brush 26 moves back and forth to sweep the solid chemical. At the same time, the blockage formed by the accumulation of solid chemicals on the filter plate 9 can be cleared by the sweeping of the brush 26 to avoid blockage due to accumulation. Therefore, the solid chemical blocking on the filter plate 9 can be pushed away or cleared by the back and forth movement of the brush 26, thereby maintaining the permeability of the filter plate 9.

[0030] A feed pipe 12 is provided at the top of the box body 1 and one end of the feed pipe 12 is connected to the feed box 3. A discharge pipe 13 is provided at the bottom of the box body 1. Control valves are provided on the surfaces of the feed pipe 12, the discharge pipe 13 and the water inlet pipe 2 to control the opening and closing of the pipe body.

[0031] The pressure relief assembly 7 includes a protective shell 14 and an exhaust pipe 15. The protective shell 14 is fixedly connected to the box body 1. The exhaust pipe 15 is arranged in the protective shell 14 and the bottom of the exhaust pipe 15 is connected to the box body 1. A fixing rod 16 is arranged in the exhaust pipe 15, and a sealing block 17 is arranged at the bottom of the fixing rod 16.

[0032] Guide rods 18 are provided on both sides of the top of the sealing block 17, and the other end of the guide rod 18 movably passes through the fixed rod 16. A spring 19 is sleeved on the surface of the guide rod 18, and both ends of the spring 19 are fixedly connected to the fixed rod 16 and the sealing block 17 respectively. When the sealing block 17 moves, the guide rods 18 on both sides of the top slide in the fixed rod 16 and compress the spring 19, so that the stability of the movement of the sealing block 17 can be enhanced through the guide rods 18.

[0033] Exhaust ports 20 are provided on both sides of the exhaust pipe 15, an exhaust channel 21 is provided between the exhaust pipe 15 and the protective shell 14, an opening 22 is provided on the top of the protective shell 14, a first filter plate 23 and a second filter plate 24 are buckled in the opening 22, a pressure gauge 25 is provided on the surface of the protective shell 14 and one end of the pressure gauge 25 extends into the exhaust pipe 15, and the gas pressure in the box body 1 can be observed in time through the pressure gauge 25.

[0034] The filter plate 9 has a feeding trough 27 in the middle, and a pair of grinding rollers 28 are installed in the feeding trough 27. The distance between the two grinding rollers 28 is set according to actual needs, so as to grind the granular chemical agent into powder. The two grinding rollers 28 rotate in opposite directions along the axis direction, and are driven by a driving member such as two meshing gears and a motor (set on the box 1), which is a common existing technology and is not shown in the figure.

[0035] According to actual needs, the gap between the grinding roller 28 and the inner wall of the feeding trough 27 is small, and the granular chemical agent put into the filter plate 9 cannot fall from the gap. The filter plate 9 is made of wear-resistant steel plate. When the pressure roller 6 and the brush 26 are used together, when the brush 26 passes through the feeding trough 27, the solid chemical agent on the left and right sides of the feeding trough 27 and is crushed can be brought into the feeding trough 27, and then ground by two grinding rollers 28 to become a drug with a smaller particle size, so that it falls into the box body 1.

[0036] The mixed fluidized bed reactor pours granular solid chemicals into the feed box 3, and solid chemicals with smaller particle sizes can directly fall into the feed pipe 12 from the mesh holes on the surface of the metal filter plate 9. The larger solid chemicals remaining on the surface of the filter plate 9 after filtration can be removed by starting the motor 10, which drives the screw rod 5 to rotate, thereby driving the screw rod 5 to drive the rotating frame 11 to move. The rotating frame 11 moves and drives the pressing roller 6 and the brush 26 to move to crush and sweep the granular solid chemicals on the filter plate 9, so that the larger solid chemicals are crushed and pulverized into smaller particles. And under the reciprocating rolling of the pressure roller 6, the solid chemical agents with larger particle sizes are gradually refined into solid chemical agents with smaller particle sizes, so that the refined solid chemical agents fall into the feed pipe 12 from the filter holes on the surface of the filter plate 9, and enter the box 1 from the feed pipe 12, so that the refined solid chemical agents contact with the wastewater in the box 1 to react and degrade. By rolling and refining the granular solid chemical agents, the surface area of ​​the solid chemical agents in contact with the wastewater is increased, and after the solid chemical agents are rolled and refined, the solid chemical agents can be evenly dispersed in the wastewater to avoid accumulation in the wastewater and affecting the treatment effect of the wastewater.

[0037] By making the refined solid chemical react and degrade with the wastewater, the chemical will release gas during the reaction and degradation. When the gas accumulates more, the gas presses the sealing block 17 into the exhaust pipe 15 to move, so that the sealing block 17 moves to the end away from the pressure gauge 25, and while the sealing block 17 moves, the guide rods 18 on both sides of the top slide in the fixed rod 16 and compress the spring 19, so that the stability of the movement of the sealing block 17 can be enhanced by the guide rods 18, and while the sealing block 17 moves, both sides are separated from the seal of the exhaust port 20, so that the gas in the exhaust pipe 15 is discharged into the exhaust channel 21 through the exhaust port 20, and discharged through the opening 22 at the top of the protective shell 14, so that the gas in the storage tank body is discharged in time, and the pressure in the box body 1 is reduced;

[0038] When the gas is discharged through the opening 22 at the top of the protective shell 14, the first filter plate 23 and the second filter plate 24 located in the opening 22 filter the discharged gas, and the gas is filtered by the activated alumina ball filler in the first filter plate 23. The porous structure of the activated alumina balls can adsorb and purify harmful substances and organic matter in the gas. After filtration, the activated carbon in the second filter plate 24 filters the pungent odor in the gas to avoid the pungent smell of the discharged gas.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mixed fluidized bed reactor, characterized in that: include: A box body (1), wherein a water inlet pipe (2) is provided on one side of the box body (1); A feed box (3), the feed box (3) being arranged on the top of the box body (1) for adding reaction materials, the feed box (3) being provided with a rolling assembly for refining the added reaction materials, the screw rod (5) of the rolling assembly driving the pressing roller (6) to move so that the pressing roller (6) can press and refine the reaction materials in the feed box (3); A pressure relief component (7) is arranged on the top of the box body (1) and is used to timely discharge the gas generated by the reaction of the reaction materials and waste water in the box body (1).

2. A mixed fluidized bed reactor according to claim 1, characterized in that: The rolling assembly comprises a filter plate (9), the screw rod (5) is rotatably connected to the feed box (3), a motor (10) is provided on one side of the feed box (3), the output shaft of the motor (10) rotates through the feed box (3) and is fixedly connected to the screw rod (5), and the filter plate (9) is provided at the bottom of the screw rod (5).

3. A mixed fluidized bed reactor according to claim 2, characterized in that: The surface of the screw rod (5) is connected to a rotating frame (11) through a screw nut, and the top of the rotating frame (11) is slidably connected to the feed box (3). The pressure roller (6) is rotatably connected to the rotating frame (11) and the bottom of the pressure roller (6) is in contact with the filter plate (9). Brushes (26) are provided at the bottom of the rotating frame (11) and on both sides of the pressure roller (6), and the bottom of the brush (26) is in contact with the filter plate (9).

4. A mixed fluidized bed reactor according to claim 1, characterized in that: A feed pipe (12) is provided in the top of the box body (1), and one end of the feed pipe (12) is connected to the feed box (3); a discharge pipe (13) is provided at the bottom of the box body (1).

5. A mixed fluidized bed reactor according to claim 1, characterized in that: The pressure relief assembly (7) comprises a protective shell (14) and an exhaust pipe (15); the protective shell (14) is fixedly connected to the housing (1); the exhaust pipe (15) is arranged in the protective shell (14) and the bottom of the exhaust pipe (15) is connected to the housing (1); a fixing rod (16) is arranged in the exhaust pipe (15); and a sealing block (17) is arranged at the bottom of the fixing rod (16).

6. A mixed fluidized bed reactor according to claim 5, characterized in that: Guide rods (18) are provided on both sides of the top of the sealing block (17); the other end of the guide rod (18) movably penetrates the fixed rod (16); a spring (19) is sleeved on the surface of the guide rod (18); the two ends of the spring (19) are respectively fixedly connected to the fixed rod (16) and the sealing block (17).

7. A mixed fluidized bed reactor according to claim 5, characterized in that: Exhaust ports (20) are provided on both sides of the exhaust pipe (15), an exhaust passage (21) is provided between the exhaust pipe (15) and the protective shell (14), an opening (22) is provided on the top of the protective shell (14), a first filter plate (23) and a second filter plate (24) are buckled in the opening (22), a pressure gauge (25) is provided on the surface of the protective shell (14), and one end of the pressure gauge (25) extends into the exhaust pipe (15).

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