Treatment process and equipment for desulfurization and denitrification sewage

Abstract

The invention relates to the technical field of sewage treatment, and particularly discloses a desulfurization and denitrification sewage treatment process which comprises the following specific steps: step 1, pressurizing sewage needing to be treated through a pressurizing pump, so that the sewage has certain directional flowability; 2, inputting the pressurized sewage into a siphon of desulfurization and denitrification sewage treatment equipment, so that the sewage has certain pressure in the siphon to flow; various chemical agents are added into a plurality of agent barrels of the desulfurization and denitrification sewage treatment equipment; step 3, starting desulfurization and denitrification sewage treatment equipment, so that a chemical agent in an agent barrel is automatically sucked into a siphon along with the flow speed of the sewage to perform automatic proportioning reaction, and the purpose of accurately feeding the agent is achieved; the problems that when desulfurization and denitrification wastewater is treated by existing equipment, the agent adding amount and the sewage amount are unbalanced, so that the agent adding effect is poor, and mixing is not uniform are solved.

Description

Technical Field

[0001] The invention relates to the technical field of desulfurization and denitrification wastewater treatment, and in particular to a desulfurization and denitrification wastewater treatment process and equipment. Background Art

[0002] During petrochemical production, flue gas is discharged. After desulfurization and denitrification by flue gas purification equipment, a large amount of sewage will be produced. If the sewage is discharged directly, it will cause serious pollution to the environment. The staff needs to use sewage treatment equipment to treat the sewage after flue gas desulfurization and denitrification.

[0003] When existing equipment treats desulfurization and denitrification wastewater, when adding reagents to the waste liquid, it is usually added to the sewage pool at one time, which causes the reagents to diffuse too slowly and certain dead corners appear in the reaction. Secondly, the amount of reagent added cannot be accurately controlled according to the amount of sewage, resulting in reagent filtration or too little reagent, poor dosing effect, uneven mixing, and failure to effectively mix the reagents with the waste liquid, resulting in poor removal of impurities in the waste liquid, resulting in more impurities remaining in the discharged waste liquid.

[0004] Based on this, the present invention designs a treatment process and equipment for desulfurization and denitrification wastewater to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a treatment process and equipment for desulfurization and denitrification wastewater, so as to solve the problem that the existing equipment proposed in the above background technology usually adds the agent to the waste liquid in a one-time manner when treating the desulfurization and denitrification wastewater, which causes the agent to diffuse too slowly and certain dead corners appear in the reaction. Secondly, the amount of agent added cannot be accurately controlled according to the amount of sewage, resulting in too much agent, waste of agent or too little agent, poor dosing effect, uneven mixing, and inability to effectively mix the agent with the waste liquid, resulting in poor removal of impurities in the waste liquid, resulting in a large amount of impurities remaining in the discharged waste liquid.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a treatment device for desulfurization and denitrification wastewater, comprising a siphon tube, wherein an extrusion block for accelerating water flow is symmetrically fixedly arranged on the central inner wall of the siphon tube, and a drug feed pipe is fixedly arranged on the side wall of the extrusion block radially about the axis of the siphon tube, and each of the drug feed pipes passes through the siphon tube and the extrusion block and is connected with the inner side of the siphon tube, a bent pipe is fixedly arranged at one end of the drug feed pipe away from the siphon tube, and a vertical medicine bin is fixedly arranged at the other end of the bent pipe, a valve plate for automatically opening according to the sewage flow rate is arranged inside the siphon tube, a torsion spring shaft for keeping the siphon tube normally closed is fixedly arranged in the center of the valve plate, both ends of the torsion spring shaft pass through the siphon tube and are rotatably connected to the siphon tube, a balancing device for controlling the drug feed of the drug feed pipe and the balance of the sewage flow rate of the siphon tube is arranged at the outer end of the torsion spring shaft, and a liquid adding pipe is fixedly arranged at the upper end of the medicine bin.

[0007] As a further scheme of the present invention, the balancing device includes angle plates respectively fixedly arranged at both ends of the torsion spring shaft, a balance rod rotatably arranged at the other end of the angle plate, a pull rod fixedly arranged on the balance rod, a rise and fall rod rotatably arranged on the outer wall of the pull rod, an angle shaft fixedly arranged on the other end of the rise and fall rod, the angle shaft is rotatably arranged on the outer side wall of the medicine bin, a micro-motion piece is fixedly arranged on the angle shaft, an adjustment rod is rotatably arranged on the other end of the micro-motion piece, a fine-tuning plate is rotatably arranged on the lower end of the adjustment rod, the fine-tuning plate is vertically slidably arranged on the side wall of the medicine inlet pipe, and the side wall of the lower end of the fine-tuning plate is in contact with the inner wall of the medicine inlet pipe, and a speed control device that can automatically balance the flow rate of the siphon according to the sewage flow rate inside the siphon is arranged on the end of the rise and fall rod away from the pull rod.

[0008] As a further solution of the present invention, the speed control device includes a speed limiting rod fixedly arranged at the front end of the undulating rod, a U-shaped fork is fixedly arranged at the end of the speed limiting rod, two rotating balls are symmetrically arranged on the inner wall of the U-shaped fork, a speed limiting wheel is arranged between the two rotating balls, the speed limiting wheel is clamped on the outer walls of the two rotating balls through an annular groove opened on the side wall, a positioning shaft is coaxially and vertically slidably arranged at the center of the speed limiting wheel, the positioning shaft is rotatably arranged at the upper end of the siphon, and a speed changing device is arranged at the lower end of the speed limiting wheel, which can drive the speed limiting wheel to move upward when the speed of the positioning shaft increases; the speed changing device includes a fixed arrangement Two symmetrically arranged L-frames are provided at the lower end of the speed limiting wheel, and a lifting rod is rotatably provided at the lower end of the L-frame. An eight-shaped plate is rotatably provided at the other end of the lifting rod. The eight-shaped plate is rotatably provided on the side wall of the positioning shaft. A threaded rod is fixedly provided at the lower end of the eight-shaped plate, and a counterweight ball is screwed on the outer side of the threaded rod. A detection device for detecting the flow rate of sewage is provided at one end of the positioning shaft passing through the inner side of the cavity of the siphon pipe; the detection device includes a turbine fan rotatably provided in the center of the siphon pipe, the central axis of the turbine fan coincides with the axis of the siphon pipe, and the rotating shaft of the turbine fan is connected to the lower end of the positioning shaft through a bevel gear set.

[0009] As a further scheme of the present invention, a stirring bevel gear is coaxially fixed on the upper end of the positioning shaft, a bevel gear rod is meshed on the outer side of the stirring bevel gear, the bevel gear rod passes through the medicine bin and is rotatably arranged on the side wall of the medicine bin, one end of the bevel gear rod located inside the medicine bin is meshed with a driven bevel gear, a stirring shaft is vertically arranged at the center of the driven bevel gear, a stirring blade is fixedly arranged on the outer wall of the stirring shaft, a sleeve is sleeved on the outer wall of the lower end of the stirring shaft, and the sleeve is fixedly arranged on the inner wall of the medicine bin; the moving bevel gear is axially slidably arranged on the outer wall of the stirring shaft, a floating plate is fixedly arranged on the outer wall of the lower end of the stirring shaft, and locking teeth for locking the stirring shaft and the sleeve are provided on the lower end of the stirring shaft and the inner wall of the upper end of the sleeve.

[0010] As a further solution of the present invention, a friction-reducing coating is sprayed between the side wall of the lower end of the stirring shaft and the inner wall of the sleeve to reduce friction and extend the service life of the equipment.

[0011] A treatment process for desulfurization and denitrification wastewater, the specific steps of the process are as follows: Step 1: Pressurize the sewage to be treated through a pressure pump so that the sewage itself has a certain directional fluidity; Step 2: Input the pressurized sewage into the siphon of the desulfurization and denitrification sewage treatment equipment, so that the sewage flows in the siphon with a certain pressure; Step 3: Add corresponding chemical agents to each reagent barrel of the desulfurization and denitrification wastewater treatment equipment to avoid the problem of premature reaction caused by mixing the reagents; Step 4: Start the desulfurization and denitrification wastewater treatment equipment so that the chemical agents in the agent barrel are automatically sucked into the siphon according to the flow rate of the wastewater for automatic proportioning reaction, so as to achieve the purpose of accurate dosing.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention uses pressurized sewage to impact the valve plate, so that the valve plate opens according to the sewage impact force to overcome the force of the torsion spring shaft, thereby allowing the balancing device to work and discharge the medicine in the medicine bin into the siphon through the bend pipe and the medicine inlet pipe, so as to avoid the situation where there is no sewage in the siphon and the medicine is still discharged into the siphon under the action of the external atmospheric pressure, causing medicine waste; secondly, the flow rate of the sewage passing through the extrusion blocks is accelerated to produce a siphon effect and reduce the pressure, so that the external atmospheric pressure can quickly press the medicine in the medicine bin into the flowing sewage, and as the sewage flow rate is faster, the limiting effect of the balancing device on the medicine is smaller, and the pressure difference between the external atmospheric pressure and the sewage flow rate is larger, so that the medicine is injected into the sewage faster, so that the ratio of sewage and medicine is balanced, and the directions of the medicine and sewage are crossed and vertical when they are merged, so that the fusion efficiency can be accelerated and the reaction is more thorough.

[0013] The present invention causes a certain rotation of the torsion spring shaft by the impact of sewage on the valve plate, thereby causing the angle plate to deflect. The deflection of the angle plate drives the balance bar to move up and down, and the up and down movement of the balance bar pulls the pull rod to move up and down. The up and down movement of the pull rod drives the undulating bar to rotate around the angle axis, thereby causing the angle axis to rotate on the side wall of the medicine bin. The rotation of the angle axis drives the micro-movement plate to rotate, causing the other end of the micro-movement plate to move up and down, thereby further causing the adjustment rod to move up and down, thereby fine-tuning the fine-tuning plate at the lower end of the adjustment rod up and down, so that the size of the passable area of ​​the inner cavity of the medicine inlet tube can be adjusted, thereby controlling the amount of medicine passing through, thereby completing the sewage flow rate and further actively controlling the amount of medicine input, thereby achieving greater precision, thereby avoiding the problem of poor ratio between the medicine and the sewage.

[0014] The present invention drives the turbine fan to rotate through sewage to rotate the positioning shaft, so that the eight-shaped plate is centrifugally rotated by the threaded rod and the counterweight ball, thereby indirectly controlling the opening angle of the valve plate at the rear end, so that the sewage flow rate is always controlled within a certain range, thereby avoiding the sewage flow rate being too extreme, so that the medicine feeding limit of the medicine feeding pipe itself is broken, and the medicine addition amount limit cannot meet the sewage flow rate, thereby causing the problem of unbalanced medicine addition. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the overall structure of the process flow of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is a schematic diagram of a partial cross-sectional structure of the present invention viewed from the rear side; Figure 4 For the present invention Figure 3 The enlarged structural diagram at A in the middle; Figure 5 It is a schematic diagram of a partial cross-sectional structure of the present invention viewed from the front side; Figure 6 For the present invention Figure 5 The enlarged structural diagram at B in the middle; Figure 7 For the present invention Figure 5 Enlarged structural diagram at point C in the middle.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows: Siphon 10, extrusion block 11, medicine inlet pipe 12, bent pipe 13, medicine bin 14, valve plate 15, torsion spring shaft 16, liquid adding tube 17, angle plate 20, balance bar 21, pull rod 22, ups and downs rod 23, angle shaft 24, micro-movement piece 25, adjustment rod 26, fine adjustment plate 27, speed limit rod 30, U-shaped fork 31, rotating ball 32, speed limit wheel 33, positioning shaft 34, L frame 35, lifting rod 36, eight-shaped plate 37, threaded rod 38, counterweight ball 39, turbofan 41, stirring bevel gear 45, bevel gear rod 46, driven bevel gear 47, stirring shaft 48, stirring fan blade 49, sleeve 50, floating plate 55, locking teeth 56. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-7 The present invention provides a technical solution: a desulfurization and denitrification wastewater treatment device, comprising a siphon 10, wherein a squeezing block 11 for accelerating water flow is symmetrically fixedly arranged on the central inner wall of the siphon 10, and a drug inlet pipe 12 is fixedly arranged on the side wall of the squeezing block 11 radially about the axis of the siphon 10, each drug inlet pipe 12 penetrates the siphon 10 and the squeezing block 11 and is connected to the inner side of the siphon 10, and a bent pipe 13 is fixedly arranged at one end of the drug inlet pipe 12 away from the siphon 10, and the bent pipe 13 is also fixedly arranged at the end of the drug inlet pipe 12 away from the siphon 10. A vertical medicine bin 14 is fixedly arranged at one end, a valve plate 15 is arranged inside the siphon tube 10 for automatically opening according to the flow rate of sewage, a torsion spring shaft 16 for keeping the siphon tube normally closed is fixedly arranged at the center of the valve plate 15, both ends of the torsion spring shaft 16 pass through the siphon tube 10 and are rotatably connected to the siphon tube 10, a balancing device for controlling the balance of the medicine feeding pipe 12 and the sewage flow rate of the siphon tube 10 is arranged at the outer end of the torsion spring shaft 16, and a liquid adding pipe 17 is fixedly arranged at the upper end of the medicine bin 14; Before the present invention is used, Figure 2 As shown, from Figure 2 The upper end of the device is viewed from the top. Figure 2 The front end of the device is shown from left to right. The device is described in the following device orientation and will not be described in detail. The device is assembled first, and the sewage is pressurized and passed into the siphon 10. At the same time, different reagents are added into multiple medicine bins 14 to avoid the problem of sewage treatment failure caused by reactions between different reagents. When the present invention is used, Figure 2As shown, sewage enters the siphon 10 and moves quickly in the siphon 10. When the sewage moves between the extrusion blocks 11, the extrusion blocks 11 reduce the inner diameter of the siphon 10, thereby further accelerating the flow rate of the sewage, reducing the pressure at one end of the medicine inlet pipe 12 close to the siphon 10, and further reducing the internal pressure of the curved pipe 13, so that the external atmospheric pressure presses the medicine in the medicine bin 14 into the curved pipe 13, wherein the medicine bin 14 is arranged at the upper end of the medicine inlet pipe 12 so that the medicine can automatically flow into the siphon 10 under the action of the external atmospheric pressure, avoiding the vacuum environment, causing the air to be compressed, so that the medicine cannot continue to enter the siphon 10 smoothly, resulting in the problem of insufficient medicine addition, and then entering the medicine inlet pipe 12, thereby pressing the medicine in the medicine inlet pipe 12 on both sides of the extrusion block 11. The medicine is quickly sucked into the siphon tube 10 through the siphon effect, wherein the liquid adding pipe 17 at the upper end of the medicine bin 14 is convenient for adding medicine on the one hand, and can be connected with the external atmospheric pressure on the other hand. When the sewage flow rate is accelerated and the siphon effect occurs, the external atmospheric pressure can quickly press the medicine into the siphon tube 10, so that the sewage can be added while the medicine is moving. Secondly, the faster the sewage flow rate, the greater the siphon force, so that the medicine in the medicine bin 14 can be more quickly sucked into the sewage. Secondly, the sewage entering the siphon tube 10 will impact the valve plate 15, so that the valve plate 15 overcomes the effect of the torsion spring shaft 16 and opens, and then the upper limit of the input of the medicine is limited by the balancing device, so as to avoid the medicine being automatically discharged into the siphon tube 10 when the medicine is subjected to normal atmospheric pressure and no sewage passes through the siphon tube 10, thereby causing a certain waste of medicine; The present invention uses pressurized sewage to impact the valve plate 15, so that the valve plate 15 opens according to the sewage impact force to overcome the force of the torsion spring shaft 16, thereby allowing the balancing device to work, and discharging the medicine in the medicine bin 14 into the siphon 10 through the bend 13 and the medicine inlet pipe 12, so as to avoid the waste of medicine caused by the medicine being discharged into the siphon 10 under the action of the external atmospheric pressure when there is no sewage in the siphon 10; secondly, the flow rate of sewage passing through the extrusion blocks 11 is accelerated to produce a siphon effect and reduce the pressure, so that the external atmospheric pressure can quickly press the medicine in the medicine bin 14 into the flowing sewage, and as the sewage flow rate is faster, the limiting effect of the balancing device on the medicine is smaller, and the pressure difference between the external atmospheric pressure and the sewage flow rate is larger, so that the medicine is injected into the sewage faster, so that the ratio of sewage and medicine is balanced, and the directions of the medicine and sewage are crossed and vertical when they are fused, so that the fusion efficiency can be accelerated and the reaction is more thorough.

[0020] As a further solution of the present invention, the balancing device includes an angle plate 20 fixedly arranged at both ends of the torsion spring shaft 16, a balance rod 21 is rotatably arranged at the other end of the angle plate 20, a pull rod 22 is fixedly arranged at the balance rod 21, an ups and downs rod 23 is rotatably arranged on the outer wall of the pull rod 22, an angle shaft 24 is fixedly arranged at the other end of the ups and downs rod 23, the angle shaft 24 is rotatably arranged on the outer side wall of the medicine bin 14, a micro-movement piece 25 is fixedly arranged on the angle shaft 24, an adjustment rod 26 is rotatably arranged at the other end of the micro-movement piece 25, a fine-tuning plate 27 is rotatably arranged at the lower end of the adjustment rod 26, the fine-tuning plate 27 is vertically slidably arranged on the side wall of the medicine feed pipe 12, and the side wall of the lower end of the fine-tuning plate 27 is in contact with the inner wall of the medicine feed pipe 12, and a speed control device that can automatically balance the flow rate of the siphon 10 according to the flow rate of the sewage inside the siphon 10 is arranged at the end of the ups and downs rod 23 away from the pull rod 22; like Figure 2 and Figure 3 As shown, when the present invention is used, the torsion spring shaft 16 is affected by the sewage impact valve plate 15, and rotates to a certain extent, thereby causing the angle plate 20 to deflect, and the deflection of the angle plate 20 drives the balance bar 21 to move up and down, and the balance bar 21 moves up and down to pull the pull rod 22 to move up and down, and the pull rod 22 moves up and down to drive the undulating rod 23 to rotate around the angle shaft 24, so that the angle shaft 24 rotates on the side wall of the medicine bin 14, and the rotation of the angle shaft 24 drives the micro-movement plate 25 to rotate, so that the other end of the micro-movement plate 25 moves up and down, thereby further moving the adjustment rod 26 up and down, thereby fine-tuning the fine-tuning plate 27 at the lower end of the adjustment rod 26 up and down, so that the size of the area through which the inner cavity of the medicine inlet tube 12 can be adjusted, thereby controlling the amount of medicine passing through, and the amount of medicine passing through is controlled by two conditions, the cross-sectional area through which it passes, and the flow rate, in which the cross-sectional area through which it passes is controlled, the siphon effect, and the flow rate controlled by the pressure difference, thereby completing the sewage flow rate to further actively control the amount of medicine input, thereby achieving a more precise ratio, thereby avoiding the problem of poor matching between the amount of medicine and the amount of sewage.

[0021] As a further solution of the present invention, the speed control device includes a speed limiting rod 30 fixedly arranged at the front end of the undulating rod 23, a U-shaped fork 31 fixedly arranged at the end of the speed limiting rod 30, two rotating balls 32 symmetrically rotated are arranged on the inner wall of the U-shaped fork 31, a speed limiting wheel 33 is arranged between the two rotating balls 32, the speed limiting wheel 33 is clamped on the outer wall of the two rotating balls 32 through the annular groove opened on the side wall, a positioning shaft 34 is coaxially and vertically slidably arranged at the center of the speed limiting wheel 33, the positioning shaft 34 is rotatably arranged at the upper end of the siphon 10, and a speed changing device is arranged at the lower end of the speed limiting wheel 33, which can drive the speed limiting wheel 33 to move upward according to the increase in the rotation speed of the positioning shaft 34; the speed changing device includes a speed limiting wheel fixedly arranged on the speed limiting wheel Two symmetrically arranged L-frames 35 at the lower end of 33, a lifting rod 36 is rotatably provided at the lower end of the L-frame 35, and an eight-shaped plate 37 is rotatably provided at the other end of the lifting rod 36, and the eight-shaped plate 37 is rotatably provided on the side wall of the positioning shaft 34, and a threaded rod 38 is fixedly provided at the lower end of the eight-shaped plate 37, and a counterweight ball 39 is screwed on the outer side of the threaded rod 38. One end of the positioning shaft 34 passing through the inner side of the cavity of the siphon 10 is provided with a detection device for detecting the flow rate of sewage; the detection device includes a turbine fan 41 rotatably provided at the center of the siphon 10, the central axis of the turbine fan 41 coincides with the axis of the siphon 10, and the rotating shaft of the turbine fan 41 is connected to the lower end of the positioning shaft 34 through a bevel gear set; like Figure 5 and 6As shown, the turbine fan 41 can further promote the mixing of the medicine and the sewage. When the sewage passes through the turbine fan 41, the turbine fan 41 is driven to rotate. The rotation of the turbine fan 41 drives the positioning shaft 34 to rotate through the bevel gear set. The positioning shaft 34 rotates to drive the speed limiting wheel 33 to rotate. The speed limiting wheel 33 rotates to drive the lower end L frame 35 to revolve. At the same time, the positioning shaft 34 rotates to drive the eight-shaped plate 37 to revolve. The revolution of the eight-shaped plate 37 causes the lower end, and the L frame 35 revolves to drive the threaded rod 38 and the counterweight ball 39 at the lower end to revolve. The counterweight ball 39 can move on the threaded rod 38 to control the centrifugal force range, thereby further controlling the sewage flow rate. The revolution of the threaded rod 38 and the counterweight ball 39 generates centrifugal force, thereby causing the eight-shaped plate 37 to rotate. The rotation of the eight-shaped plate 37 pushes the upper end of the lifting rod 36 to move upward. The upward movement of the lifting rod 36 causes the L frame 35 and the speed limiting wheel 33 move up, the speed limiting wheel 33 moves up so that the rotating ball 32 moves up to reduce friction, the rotating ball 32 moves up so that the U-shaped fork 31 moves up, so that the speed limiting rod 30 moves up, the speed limiting rod 30 moves up so that the undulating rod 23 rotates around the angle axis 24 and drops, thereby indirectly causing the balance rod 21 to drop, thereby causing the balance rod 21 to rotate around the torsion spring shaft 16, so that the torsion spring shaft 16 drives the valve plate 15 to close, thereby ensuring the sewage flow rate control, on the contrary, when the sewage flow rate decreases, the rotation speed of the positioning shaft 34 decreases, and the opening angle of the valve plate 15 increases, so that the sewage flow rate is always controlled within the corresponding range, thereby further controlling the sewage flow rate, thereby avoiding the sewage flow rate being too fast, or too slow to exceed the medicine feeding limit of the medicine feeding pipe 12 itself, thereby causing the problem of unbalanced drug addition; The present invention drives the turbine fan 41 to rotate by sewage to rotate the positioning shaft 34, so that the eight-shaped plate 37 is centrifugally rotated by the threaded rod 38 and the counterweight ball 39, thereby indirectly controlling the opening angle of the valve plate 15 at the rear end, so that the sewage flow rate is always controlled within a certain range, thereby avoiding the sewage flow rate being too extreme, so that the medicine feeding limit of the medicine feeding pipe 12 itself is broken, and the medicine addition amount limit cannot meet the sewage flow rate, thereby causing the problem of unbalanced medicine addition.

[0022] As a further solution of the present invention, a stirring bevel gear 45 is coaxially fixedly arranged on the upper end of the positioning shaft 34, a bevel gear rod 46 is meshed on the outer side of the stirring bevel gear 45, the bevel gear rod 46 passes through the medicine bin 14 and is rotatably arranged on the side wall of the medicine bin 14, and one end of the bevel gear rod 46 located inside the medicine bin 14 is meshed with a driven bevel gear 47, a stirring shaft 48 is vertically arranged in the center of the driven bevel gear 47, a stirring fan blade 49 is fixedly arranged on the outer wall of the stirring shaft 48, a sleeve 50 is sleeved on the outer wall of the lower end of the stirring shaft 48, and the sleeve 50 is fixedly arranged on the inner wall of the medicine bin 14; the moving bevel gear 47 is axially slidably arranged on the outer wall of the stirring shaft 48, a floating plate 55 is fixedly arranged on the outer wall of the lower end of the stirring shaft 48, and the lower end of the stirring shaft 48 and the inner wall of the upper end of the sleeve 50 are both provided with locking teeth 56 for locking the stirring shaft 48 and the sleeve 50; When the present invention is used, the positioning shaft 34 rotates to drive the stirring bevel gear 45 to rotate, the stirring bevel gear 45 rotates to drive the bevel gear rod 46 to rotate on the medicine bin 14, thereby driving the driven bevel gear 47 to rotate, the driven bevel gear 47 rotates to drive the stirring shaft 48 to rotate inside the sleeve 50, the stirring shaft 48 rotates to drive the stirring blade 49 to rotate, and the medicine in the medicine bin 14 is stirred to avoid the problem of uneven stratification and mixing of the medicine, thereby causing the problem of imbalance between the addition of the medicine and the flow rate of the sewage. Secondly, the liquid level of the medicine in the medicine bin 14 drops, causing the floating plate 55 to drop, the floating plate 55 drops, causing the stirring shaft 48 to drop, and the dropping of the stirring shaft 48 causes the sleeve 50 to drop. The locking teeth 56 on the contact surface of the cylinder 50 and the stirring shaft 48 are meshed, so that the stirring shaft 48 cannot rotate, so that the positioning shaft 34 is locked, and the threaded rod 38 and the counterweight ball 39 drop, thereby indirectly forcing the valve plate 15 to rotate and close. The valve plate 15 opens at a larger angle as the flow rate of the sewage decreases, and the maximum opening angle is ninety degrees. When the threaded rod 38 and the counterweight ball 39 drop to the limit, the valve plate 15 will directly rotate one hundred and eighty degrees and close again, thereby avoiding continuous input of sewage, thereby reminding the operator to add chemicals, and during this period of time, the sewage no longer flows, thereby avoiding the problem of dead corners for chemical mixing.

[0023] As a further solution of the present invention, a friction-reducing coating is sprayed between the side wall of the lower end of the stirring shaft 48 and the inner wall of the sleeve 50 to reduce friction and extend the service life of the equipment.

[0024] A treatment process for desulfurization and denitrification wastewater, the specific steps of the process are as follows: Step 1: Pressurize the sewage to be treated through a pressure pump so that the sewage itself has a certain directional fluidity; Step 2: Input the pressurized sewage into the siphon 10 of the desulfurization and denitrification sewage treatment equipment, so that the sewage flows in the siphon 10 with a certain pressure; Step 3: Add corresponding chemical agents to each reagent barrel of the desulfurization and denitrification wastewater treatment equipment to avoid the problem of premature reaction caused by mixing the reagents; Step 4: Start the desulfurization and denitrification wastewater treatment equipment, so that the chemical agents in the agent barrel are automatically sucked into the siphon 10 according to the flow rate of the wastewater for automatic proportioning reaction, so as to achieve the purpose of accurate dosing.

Claims

1. A desulfurization and denitrification wastewater treatment equipment, characterized in that: The invention comprises a siphon tube (10), wherein a squeezing block (11) for accelerating water flow is symmetrically fixedly arranged on the central inner wall of the siphon tube (10), and a drug inlet tube (12) is fixedly arranged on the side wall of the squeezing block (11) radially with respect to the axis of the siphon tube (10), and each of the drug inlet tubes (12) penetrates the siphon tube (10) and the squeezing block (11) and is connected to the inner side of the siphon tube (10), and a bent tube (13) is fixedly arranged at one end of the drug inlet tube (12) away from the siphon tube (10), and a vertical drug inlet tube (13) is fixedly arranged at the other end of the bent tube (13). The medicine bin (14) is provided with a valve plate (15) for automatically opening according to the flow rate of sewage inside the siphon tube (10), a torsion spring shaft (16) for keeping the siphon tube normally closed is fixedly provided at the center of the valve plate (15), both ends of the torsion spring shaft (16) pass through the siphon tube (10) and are rotatably connected to the siphon tube (10), a balancing device for controlling the flow rate of sewage from the medicine feeding pipe (12) and the siphon tube (10) is provided at the outer end of the torsion spring shaft (16), and a liquid adding pipe (17) is fixedly provided at the upper end of the medicine bin (14).

2. The desulfurization and denitrification wastewater treatment equipment according to claim 1 is characterized in that: The balancing device comprises angle plates (20) respectively fixedly arranged at both ends of the torsion spring shaft (16); a balancing rod (21) is rotatably arranged at the other end of the angle plate (20); a pull rod (22) is fixedly arranged at the balancing rod (21); a undulating rod (23) is rotatably arranged at the outer wall of the pull rod (22); an angle shaft (24) is fixedly arranged at the other end of the undulating rod (23); the angle shaft (24) is rotatably arranged at the outer wall of the medicine bin (14); and a A micro-moving plate (25) is provided, and an adjusting rod (26) is rotatably provided at the other end of the micro-moving plate (25). A fine-adjusting plate (27) is rotatably provided at the lower end of the adjusting rod (26). The fine-adjusting plate (27) is vertically slidably provided on the side wall of the medicine inlet pipe (12), and the side wall of the lower end of the fine-adjusting plate (27) is in contact with the inner wall of the medicine inlet pipe (12). A speed control device is provided at one end of the undulating rod (23) away from the pull rod (22) for automatically balancing the flow rate of the siphon pipe (10) according to the flow rate of the sewage inside the siphon pipe (10).

3. The desulfurization and denitrification wastewater treatment equipment according to claim 2 is characterized in that: The speed control device comprises a speed limiting rod (30) fixedly arranged at the front end of the undulating rod (23); a U-shaped fork (31) fixedly arranged at the end of the speed limiting rod (30); two rotating balls (32) symmetrically rotated are arranged on the inner wall of the U-shaped fork (31); a speed limiting wheel (33) is arranged between the two rotating balls (32); the speed limiting wheel (33) is clamped on the outer walls of the two rotating balls (32) through an annular groove provided on the side wall; a positioning shaft (34) is coaxially and vertically slidably arranged at the center of the speed limiting wheel (33); the positioning shaft (34) is rotatably arranged at the upper end of the siphon tube (10); and a speed changing device is arranged at the lower end of the speed limiting wheel (33) for driving the speed limiting wheel (33) to move upward when the rotation speed of the positioning shaft (34) increases.

4. The desulfurization and denitrification wastewater treatment equipment according to claim 3 is characterized in that: The speed changing device comprises two symmetrically arranged L-frames (35) fixedly mounted on the lower end of the speed limiting wheel (33); a lifting rod (36) is rotatably mounted on the lower end of the L-frame (35); an eight-shaped plate (37) is rotatably mounted on the other end of the lifting rod (36); the eight-shaped plate (37) is rotatably mounted on the side wall of the positioning shaft (34); a threaded rod (38) is fixedly mounted on the lower end of the eight-shaped plate (37); a weighted ball (39) is screwed onto the outer side of the threaded rod (38); and a detection device for detecting the flow rate of sewage is disposed at one end of the positioning shaft (34) passing through the inner side of the cavity of the siphon tube (10).

5. The desulfurization and denitrification wastewater treatment equipment according to claim 4 is characterized in that: The detection device comprises a turbine fan (41) rotatably arranged in the center of the siphon tube (10), the central axis of the turbine fan (41) coincides with the axis of the siphon tube (10), and the rotating shaft of the turbine fan (41) is connected to the lower end of the positioning shaft (34) through a bevel gear set.

6. The desulfurization and denitrification wastewater treatment equipment according to claim 5 is characterized by: A stirring bevel gear (45) is coaxially fixedly arranged on the upper end of the positioning shaft (34), a bevel gear rod (46) is meshed on the outer side of the stirring bevel gear (45), the bevel gear rod (46) passes through the medicine bin (14) and is rotatably arranged on the side wall of the medicine bin (14), one end of the bevel gear rod (46) located inside the medicine bin (14) is meshed with a driven bevel gear (47), a stirring shaft (48) is vertically arranged at the center of the driven bevel gear (47), a stirring blade (49) is fixedly arranged on the outer wall of the stirring shaft (48), and a sleeve (50) is sleeved on the outer wall of the lower end of the stirring shaft (48), and the sleeve (50) is fixedly arranged on the inner wall of the medicine bin (14).

7. The desulfurization and denitrification wastewater treatment equipment according to claim 6 is characterized by: The movable bevel gear (47) is axially slidably arranged on the outer wall of the stirring shaft (48); a floating plate (55) is fixedly arranged on the outer wall of the lower end of the stirring shaft (48); and locking teeth (56) for locking the stirring shaft (48) and the sleeve (50) are provided on the lower end of the stirring shaft (48) and the inner wall of the upper end of the sleeve (50).

8. The desulfurization and denitrification wastewater treatment equipment according to claim 7 is characterized in that: A friction-reducing coating for reducing friction and extending the service life of the equipment is sprayed between the side wall of the lower end of the stirring shaft (48) and the inner wall of the sleeve (50).

9. A process for treating desulfurized and denitrated wastewater, applicable to a desulfurized and denitrated wastewater treatment equipment according to claims 1-8, characterized in that: The specific steps of this process are as follows: Step 1: Pressurize the sewage to be treated through a pressure pump so that the sewage itself has a certain directional fluidity; Step 2: inputting the pressurized sewage into the siphon (10) of the desulfurization and denitrification sewage treatment equipment, so that the sewage flows in the siphon (10) with a certain pressure; Step 3: Add corresponding chemical agents to each reagent barrel of the desulfurization and denitrification wastewater treatment equipment to avoid the problem of premature reaction caused by mixing the reagents; Step 4: Start the desulfurization and denitrification wastewater treatment equipment so that the chemical agents in the agent barrel are automatically sucked into the siphon (10) according to the flow rate of the wastewater for automatic proportioning reaction, thereby achieving the purpose of accurate dosing.

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