Denitrogenation and dephosphorization equipment

Abstract

The present application relates to the technical field of agricultural tail water treatment, in particular to a denitrification and dephosphorization equipment, which comprises a water injection pipe, a semicircular pipe is arranged on one side of the water injection pipe, an upper connecting pipe and a lower connecting pipe are respectively arranged at two ends of the semicircular pipe, a lower hollow pipe is arranged below the upper hollow pipe and is parallel to the upper hollow pipe, one end of the upper hollow pipe and one end of the lower hollow pipe are connected with and communicated with a calcium oxide bin, a rubber ring in the form of a ring is arranged in a channel formed by the semicircular pipe, the lower connecting pipe, the lower hollow pipe, the calcium oxide bin, the upper hollow pipe and the upper connecting pipe, a plurality of through holes for storing calcium oxide are uniformly arranged on the outer surface of the rubber ring, a supporting wheel is rotatably arranged at a lower position in the calcium oxide bin, and a driving member for driving the rubber ring to move is arranged at the lower position in the bin, so that the pH value of the sewage flowing into the sewage pool meets the needs of microorganisms and does not cause large fluctuations in the pH value of the sewage pool.

Description

TECHNICAL FIELD

[0001] The application is a denitrification and dephosphorization equipment, and belongs to the technical field of agricultural tail water treatment. BACKGROUND

[0002] The biological denitrification and dephosphorization process is a commonly used process for treating agricultural tail water, and the biological denitrification and dephosphorization refers to a process for removing the nutrients nitrogen and phosphorus in sewage by using biological treatment method. The pH value of water is a very important parameter in the sewage treatment plant, because it affects the reproduction speed of microorganisms in the activated sludge, the microbial reaction and the reaction rate. Therefore, if the sewage is directly added into the sewage tank, the fluctuation of the pH value in the sewage tank will be caused, and the influence on the microorganisms will also exist. At present, in order to make the sewage in the sewage tank reach the pH value required by the microorganisms, calcium carbonate is usually scattered in the sewage tank to adjust the pH value in the sewage tank. Since the sewage tank has a certain depth, after the calcium carbonate is scattered, a certain time is needed to make the calcium carbonate uniformly diffuse in the sewage in the sewage tank. In this process, the pH values of the sewage at different depths in the sewage tank are not the same, which affects the microbial reaction and the reaction rate. Since a long time is needed after the calcium carbonate is scattered in the sewage tank to make the pH value of the sewage reach the required value, the efficiency of the sewage treatment is affected. SUMMARY

[0003] The application aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the application is to provide a denitrification and dephosphorization equipment, so that the pH value of the sewage flowing into the sewage tank meets the needs of the microorganisms, and does not cause a large fluctuation of the pH value in the sewage tank.

[0004] The purpose of the application is achieved by adopting the following technical solutions:

[0005] The first aspect of the present application provides a denitrification and dephosphorization equipment, which comprises a water injection pipe for injecting sewage into a sewage pool, a ball valve is arranged at one end of the water injection pipe, a mixing mechanism is arranged at the other end of the water injection pipe and communicated with the sewage pool, a semicircular pipe is arranged on one side of the water injection pipe, upper and lower connecting pipes are arranged at two ends of the semicircular pipe respectively, the lower connecting pipe is connected with the water injection pipe at the other end of the semicircular pipe, the upper connecting pipe is connected with an upper hollow pipe through a water blowing mechanism at the other end of the semicircular pipe, a lower hollow pipe is arranged below the upper hollow pipe and arranged in parallel with the upper hollow pipe, the lower hollow pipe is connected with the water injection pipe at one end, the lower hollow pipe, the lower connecting pipe and the upper connecting pipe are arranged perpendicularly to the water injection pipe, one end of the upper hollow pipe and one end of the lower hollow pipe are connected with a calcium oxide bin, a rubber ring in the form of a ring is arranged in a channel formed by the semicircular pipe, the lower connecting pipe, the lower hollow pipe, the calcium oxide bin, the upper hollow pipe and the upper connecting pipe, a plurality of through holes for storing calcium oxide are uniformly arranged on the outer surface of the rubber ring, the central axis of the through holes is arranged in parallel with the central axis of the water injection pipe, the outer diameter of the rubber ring is the same as the inner diameter of the semicircular pipe, the lower connecting pipe, the lower hollow pipe, the upper hollow pipe and the upper connecting pipe, a supporting wheel is rotatably arranged at the lower position in the calcium oxide bin, the rubber ring passes around the supporting wheel, and a driving member for driving the rubber ring to move is arranged at the lower position in the bin.

[0006] In the first aspect of the present application, as an optional embodiment, the driving member comprises a servo motor, the servo motor is arranged at the bottom of the calcium oxide bin, the output end of the servo motor extends into the calcium oxide bin, a connecting head is fixedly connected to the output end of the servo motor, the connecting head is fixedly arranged at the middle position of the top of a circular groove, the circular groove is arranged on the lower surface of a driving disc, a plurality of tube barrels matched with the through holes are equidistantly arranged on the annular side surface of the driving disc, and the length of the tube barrels inserted into the through holes from the driving disc is one third of the depth of the through holes.

[0007] In the first aspect of the present application, as an optional embodiment, a cam is arranged in the circular groove, a positioning rod is fixedly connected to the lower surface of the cam, the other end of the positioning rod away from the cam is fixedly arranged in the calcium oxide bin through a screw, the area covered by the tube barrels on the driving disc is arranged in a circular hole, the circular hole is concentrically arranged with the tube barrels, a stud is inserted into the circular hole, a circular rod is fixedly connected to the middle position of the side of the stud facing the tube barrel, the circular rod penetrates through a guide hole, the guide hole is arranged at the middle position of one side of a positioning disc, the positioning disc is arranged at the middle position of the tube barrel, a spring is arranged between the positioning disc and the stud, the spring is sleeved on the circular rod, a piston is fixedly connected to the other end of the circular rod away from the stud, the piston is slidingly arranged in the tube barrel, the other end of the stud away from the circular rod extends into the circular groove, and a round head matched with the cam is arranged at the other end of the stud away from the circular rod.

[0008] In the first aspect of the present application, as an optional embodiment, the water blowing mechanism comprises a drying box, the upper end of the hollow pipe away from the half-circular pipe is connected to the drying box, the upper end of the hollow pipe away from the calcium oxide bin is connected to the drying box, the upper end of the drying box is open and is provided with a detachable cover, the drying box is arranged on the upper side of the water injection pipe, a rectangular opening is formed on the side of the drying box facing the ball valve, an axial flow fan is arranged outside the rectangular opening, the axial flow fan is fixedly connected to the drying box, a plurality of air outlets are uniformly formed on the side of the drying box away from the axial flow fan, a drain hole is formed in the bottom of the drying box, and a heating resistor electrically connected to the temperature controller is arranged on the side of the drying box close to the rectangular opening.

[0009] In the first aspect of the present application, as an optional embodiment, the mixing mechanism comprises a mixing chamber, the end of the water injection pipe away from the ball valve is connected to the water inlet pipe, the end of the water inlet pipe away from the water injection pipe is arranged on one side of the mixing chamber and the water inlet pipe communicates with the mixing chamber, a water outlet pipe is arranged on the side of the mixing chamber away from the water inlet pipe, the end of the water outlet pipe away from the mixing chamber is connected to the sewage pool through a pipeline, the upper end of the mixing chamber is open and is provided with a detachable sealing cover, a plurality of first baffles and a plurality of second baffles are uniformly arranged on the lower surface of the sealing cover, the first baffles and the second baffles are arranged alternately, the width of the first baffles and the second baffles is the same as the width of the internal space of the mixing chamber, the lower end of the first baffle has a gap with the bottom of the mixing chamber, and a strip-shaped opening is formed on the upper part of the side of the second baffle.

[0010] In the first aspect of the present application, as an optional embodiment, the water jacket is arranged on the lower connecting pipe and is fixedly connected to the lower connecting pipe, the first pipe joint for connecting the cooling water supply pipe is arranged on one side of the outer surface of the water jacket, and the second pipe joint for connecting the cooling water return pipe is arranged on the side of the outer surface of the water jacket away from the first pipe joint.

[0011] In the first aspect of the present application, as an optional embodiment, the top of the calcium oxide bin is open, the detachable bin cover is arranged on the top of the calcium oxide bin, the vertical strip-shaped groove is formed on one side of the calcium oxide bin, and the transparent board is inlaid in the strip-shaped groove.

[0012] The present application has the following beneficial effects:

[0013] 1. This invention utilizes a servo motor to drive a drive disc to rotate, which in turn drives a tube to rotate, causing the tube to be inserted into a port on a rubber ring. This, in turn, drives the rubber ring to move within a channel formed by a semi-circular pipe, a lower connecting pipe, a lower hollow pipe, a calcium oxide silo, an upper hollow pipe, and an upper connecting pipe. Calcium oxide is then loaded into the port of the calcium oxide silo. When the port containing calcium oxide moves into the water injection pipe, the calcium oxide mixes with the wastewater under the impact of the wastewater. At this point, the calcium oxide reacts with the wastewater to produce calcium carbonate. The calcium carbonate adjusts the pH value of the wastewater flowing through the water injection pipe. The flow of the wastewater through the water injection pipe is controlled by a ball valve. The wastewater flow rate ensures that the amount of wastewater flowing through the injection pipe per unit time reacts with the amount of calcium oxide in a single opening to produce a pH value that meets the requirements of the wastewater entering the wastewater tank. Simultaneously, the nitrogen content in the wastewater is measured beforehand and checked against the principle that 1g of ammonia nitrogen consumes 7.14g of calcium carbonate alkalinity for complete nitrification. This ensures that the pH value of the wastewater flowing into the wastewater tank meets the needs of microorganisms and does not cause significant fluctuations in the pH value of the wastewater tank. Furthermore, the heat generated by the reaction of calcium oxide with water heats the wastewater, raising the temperature in the biological tank during autumn and winter, thus improving wastewater treatment efficiency.

[0014] 2. In this invention, the rubber ring passes through the lower connecting pipe and the lower hollow pipe. At this time, the rubber ring acts as a seal for the lower connecting pipe and the lower hollow pipe, preventing sewage in the water injection pipe from flowing into the calcium oxide silo through the lower hollow pipe and into the drying box through the lower connecting pipe, the semi-circular pipe and the upper connecting pipe.

[0015] 3. The present invention connects the circuit of the heating resistor and the axial fan, so that the heating resistor heats the air in the drying box. The heating temperature of the heating resistor is controlled by a thermostat. The hot air is blown onto the surface of the rubber ring by the airflow generated by the axial fan, thereby drying the residual moisture on the surface of the rubber ring and the inner wall of the opening, preventing the rubber ring from bringing a small amount of sewage into the calcium oxide silo and coming into contact with the calcium oxide.

[0016] 4. In this invention, the first pipe joint is connected to the cooling water supply pipe, and the second pipe joint is connected to the cooling water return pipe. Cooling water then enters the space formed by the lower connecting pipe and the water jacket through the first pipe joint. When the rubber ring expands slightly due to the heat generated by the reaction of calcium oxide and water, the rubber ring moves into the lower connecting pipe. The heat on the rubber ring is conducted to the cooling water in the water jacket through the lower connecting pipe. The cooling water that has absorbed the heat is discharged into the cooling water return pipe through the second pipe joint, thereby causing the rubber ring to shrink back to its original shape. This reduces the friction between the rubber ring and the lower connecting pipe, which is beneficial for the smooth movement of the rubber ring.

[0017] 5. When the servo motor of this invention drives the drive disk to rotate, the cam slides relative to the drive disk in the circular groove. When a tube is inserted into the through-hole, the pin inside the tube contacts the cam. At this time, the cam squeezes the pin, causing the pin to retract into the tube. Then, the pin and the positioning disk work together to squeeze the spring, causing the spring to undergo elastic deformation. Simultaneously, the pin drives the piston to slide inside the tube through the round rod. At this time, the piston squeezes the calcium oxide powder inside the tube, causing the calcium oxide powder inside the tube to enter the through-hole. Because there is calcium oxide powder on the side of the through-hole away from the tube... Finally, the calcium oxide powder here serves to support the calcium oxide powder inside the passage, preventing it from falling out randomly. After the tube is removed from the passage, the corresponding column head no longer contacts the cam. At this time, under the action of the spring's return force, the piston slides in the opposite direction. Then, driven by the piston, the calcium oxide powder in the calcium oxide hopper enters the tube, preparing for the next filling of calcium oxide powder into the passage. This ensures that the amount of calcium oxide powder filled into the passage each time is the same, avoiding the situation where the amount of calcium oxide powder in the passage is insufficient.

[0018] 6. The tube and the port of the present invention cooperate with each other to prevent the rubber ring from twisting during movement. At the same time, the tube rotates with the drive disc and works together with the moving rubber ring to loosen the calcium oxide powder and prevent the calcium oxide powder from bridging in the calcium oxide silo.

[0019] 7. After the calcium oxide powder of the present invention reacts with the sewage, it flows into the space formed by the sealing cover and the mixing chamber. Then, under the action of the first baffle and the second baffle, the sewage mixed with calcium carbonate is mixed evenly, and the heat generated by the calcium oxide and the sewage is diffused. Attached Figure Description

[0020] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0021] Figure 1 This is a schematic diagram of the structure of a nitrogen and phosphorus removal device according to the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly of a servo motor and a calcium oxide silo in a denitrification and dephosphorization device of the present invention;

[0023] Figure 3 This is a perspective view of a rubber ring in a denitrification and dephosphorization device according to the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly of the support wheel and the rubber ring in a denitrification and dephosphorization device according to the present invention;

[0025] Figure 5Assembling diagram of cam, pipe cylinder and driving disc in the nitrogen and phosphorus removal equipment of the present application;

[0026] Figure 6 Assembling diagram of pipe cylinder and driving disc in the nitrogen and phosphorus removal equipment of the present application;

[0027] Figure 7 Assembling diagram of cylinder head, round rod, positioning disc, spring, piston and pipe cylinder in the nitrogen and phosphorus removal equipment of the present application;

[0028] Figure 8 Perspective view of positioning disc in the nitrogen and phosphorus removal equipment of the present application;

[0029] Figure 9 Assembling diagram of water body, lower connecting pipe, semi-circular pipe and water injection pipe in the nitrogen and phosphorus removal equipment of the present application;

[0030] Figure 10 Assembling diagram of lower hollow pipe, lower connecting pipe, semi-circular pipe and water injection pipe in the nitrogen and phosphorus removal equipment of the present application;

[0031] Figure 11 Assembling diagram of first baffle, second baffle and sealing cover in the nitrogen and phosphorus removal equipment of the present application;

[0032] Figure 12 Perspective view of mixing chamber in the nitrogen and phosphorus removal equipment of the present application;

[0033] In the figure: 1, water injection pipe, 2, water inlet pipe, 3, mixing chamber, 4, sealing cover, 5, calcium oxide bin, 6, lower hollow pipe, 7, bin cover, 8, upper hollow pipe, 9, box cover, 10, upper connecting pipe, 11, ball valve, 12, axial flow fan, 13, semi-circular pipe, 14, lower connecting pipe, 15, servo motor, 16, through hole, 17, rubber ring, 18, supporting wheel, 19, driving disc, 20, round groove, 21, cylinder head, 22, connecting head, 23, cam, 24, positioning rod, 25, pipe cylinder, 26, round hole, 27, piston, 28, round rod, 29, positioning disc, 30, spring, 31, round head, 32, guide hole, 33, water jacket, 34, first pipe joint, 35, second pipe joint, 36, first baffle, 37, second baffle, 38, strip-shaped hole, 39, water outlet pipe, 40, drying box. DETAILED DESCRIPTION

[0034] The application will be further described below in conjunction with the drawings and specific embodiments, it should be noted that the following described embodiments or technical features can be combined with each other to form new embodiments without conflict. Unless otherwise specified, the materials and equipment used in the embodiments can be purchased from the market. Examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the application, and cannot be understood as a limitation on the application.

[0035] In the description of the application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specifically specified and limited.

[0036] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "communicated", "connected" should be understood in a broad sense, for example, it can be fixedly connected, or connected through an intermediate medium, or the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0037] The terms "first", "second", and the like in the specification and claims of the application and the above drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not necessarily limit to those clearly listed steps or units, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0038] Embodiment 1:

[0039] Adding wastewater directly to a wastewater tank can cause fluctuations in the pH value, which can affect microorganisms. To help the wastewater reach the pH value required by microorganisms, calcium carbonate is usually added to the wastewater tank to adjust the pH value. Because wastewater tanks have a certain depth, it takes time for the calcium carbonate to spread evenly throughout the wastewater after it is added. During this process, the pH value of the wastewater at different depths in the tank varies, which affects the microbial reaction and reaction rate. Since it takes a long time for the pH value of the wastewater to reach the required value after adding calcium carbonate, the efficiency of wastewater treatment is affected.

[0040] To resolve the above issues, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 9 and Figure 10 This invention provides a technical solution: a nitrogen and phosphorus removal device, comprising a water injection pipe 1 for injecting wastewater into a wastewater tank, a ball valve 11 installed at one end of the water injection pipe 1, a semi-circular pipe 13 provided on one side of the water injection pipe 1, an upper connecting pipe 10 and a lower connecting pipe 14 respectively installed at both ends of the semi-circular pipe 13, the end of the lower connecting pipe 14 away from the semi-circular pipe 13 being connected to the water injection pipe 1, and the end of the upper connecting pipe 10 away from the semi-circular pipe 13 being connected to an upper hollow pipe 8 through a drying box 40, the lower side of the upper hollow pipe 8 being provided with The lower hollow pipe 6 is arranged parallel to the upper hollow pipe 8. One end of the lower hollow pipe 6 is connected to the water injection pipe 1. The lower hollow pipe 6, the lower connecting pipe 14, and the upper connecting pipe 10 are all arranged perpendicular to the water injection pipe 1. One end of the upper hollow pipe 8 and one end of the lower hollow pipe 6 are connected to the calcium oxide silo 5. The channel formed by the semi-circular pipe 13, the lower connecting pipe 14, the lower hollow pipe 6, the calcium oxide silo 5, the upper hollow pipe 8, and the upper connecting pipe 10 together provides installation space for the rubber ring 17 and restricts the movement trajectory of the rubber ring 17.

[0041] Multiple openings 16 for storing calcium oxide are evenly provided on the outer surface of the rubber ring 17. The central axis of the opening 16 is arranged parallel to the central axis of the water injection pipe 1. The outer diameter of the rubber ring 17 is the same as the inner diameter of the semi-circular pipe 13, the lower connecting pipe 14, the lower hollow pipe 6, the upper hollow pipe 8, and the upper connecting pipe 10, so that the rubber ring 17 passes through the lower connecting pipe 14 and the lower hollow pipe 6. At this time, the rubber ring 17 plays the role of sealing the lower connecting pipe 14 and the lower hollow pipe 6, preventing the sewage in the water injection pipe 1 from flowing into the calcium oxide silo 5 through the lower hollow pipe 6 and into the drying box 40 through the lower connecting pipe 14, the semi-circular pipe 13, and the upper connecting pipe 10.

[0042] The support wheel 18 is rotatably installed at the lower position in the calcium oxide bin 5, the rubber ring 17 passes around the support wheel 18, and the shape of the rubber ring 17 in the calcium oxide bin 5 is kept unchanged under the support of the support wheel 18. The top of the calcium oxide bin 5 is open, the removable bin cover 7 is installed at the top of the calcium oxide bin 5, and the vertical strip-shaped slot is formed in one side of the calcium oxide bin 5, and the transparent board is embedded in the strip-shaped slot. The amount of calcium oxide powder in the calcium oxide bin 5 can be observed through the transparent board.

[0043] The servo motor 15 is installed at the bottom of the calcium oxide bin 5, the output end of the servo motor 15 extends into the calcium oxide bin 5, the connecting head 22 is fixedly connected to the output end of the servo motor 15, the connecting head 22 is fixed at the middle position of the top of the circular groove 20, the circular groove 20 is formed in the lower surface of the driving disc 19, a plurality of tube barrels 25 matched with the through hole 16 are equidistantly installed on the annular side of the driving disc 19, and the length of the tube barrel 25 away from the driving disc 19 and inserted into the through hole 16 is one third of the depth of the through hole 16. The driving disc 19 is driven to rotate by the servo motor 15, the driving disc 19 drives the tube barrel 25 to rotate, the tube barrel 25 is inserted into the through hole 16 on the rubber ring 17, the rubber ring 17 is driven to move in the channel formed by the semicircular tube 13, the lower connecting tube 14, the lower hollow tube 6, the calcium oxide bin 5, the upper hollow tube 8 and the upper connecting tube 10, and the through hole 16 of the calcium oxide bin 5 is filled with calcium oxide. When the through hole 16 filled with calcium oxide moves into the water injection pipe 1, the calcium oxide in the through hole 16 is mixed with the sewage in the water injection pipe 1 under the impact of the sewage, at this time, the calcium oxide reacts with the sewage to produce calcium carbonate, the calcium carbonate adjusts the pH value of the sewage flowing through the water injection pipe 1, the flow of the sewage flowing through the water injection pipe 1 is controlled by the ball valve 11, the amount of the sewage flowing through the water injection pipe 1 per unit time reacts with the amount of the calcium oxide in one through hole 16 to produce the pH value of the sewage, which meets the needs of the pH value of the sewage entering the sewage pool, and the nitrogen content in the sewage is measured in advance, and the pH value of the sewage flowing into the sewage pool is checked according to the complete nitrification 1g ammonia nitrogen consumption 7.14g calcium carbonate alkalinity, so that the pH value of the sewage flowing into the sewage pool meets the needs of the microorganisms, and does not cause large fluctuations in the pH value of the sewage pool. At the same time, the heat generated by the reaction of calcium oxide and water heats the sewage, and the temperature in the biological pool is increased in autumn and winter, and the sewage treatment efficiency is improved.

[0044] Example 2:

[0045] When the rubber ring 17 passes through the internal space of the water injection pipe 1, a small amount of water will be attached to the surface of the rubber ring 17 and the inner wall of the through hole 16. When the water enters the calcium oxide bin 5 with the movement of the rubber ring 17, it will react with the calcium oxide, causing the calcium oxide to deteriorate.

[0046] To solve the above problems, please refer to Figure 1The upper connecting pipe 10 is connected to the drying box 40 at the end away from the semicircular pipe 13, and the upper hollow pipe 8 is connected to the drying box 40 at the end away from the calcium oxide bin 5. The upper end of the drying box 40 is open and is provided with a detachable box cover 9. The drying box 40 is arranged on the upper side of the water injection pipe 1. A rectangular opening is formed on the side of the drying box 40 facing the ball valve 11. An axial flow fan 12 is arranged outside the rectangular opening. The axial flow fan 12 is fixedly connected to the drying box 40. A plurality of air outlets are uniformly formed on the side of the drying box 40 away from the axial flow fan 12. A drain hole is formed in the bottom of the drying box 40. A heating resistor electrically connected to a temperature controller is arranged on the side of the drying box 40 close to the rectangular opening. The circuit of the heating resistor and the axial flow fan 12 is connected, so that the heating resistor heats the air in the drying box 40. The heating temperature of the heating resistor is controlled by the temperature controller. Hot air is blown to the surface of the rubber ring 17 under the action of the air flow generated by the axial flow fan 12, so as to dry the water remaining on the surface of the rubber ring 17 and the inner wall of the through hole 16, and prevent the rubber ring 17 from bringing a small amount of sewage into contact with the calcium oxide in the calcium oxide bin 5.

[0047] Example 3

[0048] When the through hole 16 filled with calcium oxide powder enters the internal space of the water injection pipe 1, the calcium oxide powder reacts with the sewage and releases heat. At this time, the rubber ring 17 will slightly expand due to the heat, and the frictional resistance between the expanded rubber ring 17 and the inner wall of the lower connecting pipe 14 will increase, thereby affecting the movement of the rubber ring 17.

[0049] To solve the above problems, please refer to Figure 1 、 Figure 9 and Figure 10 A water jacket 33 is sleeved on the lower connecting pipe 14 and is fixedly connected to the lower connecting pipe 14. A first pipe joint 34 for connecting a cooling water supply pipe is arranged on one side of the outer surface of the water jacket 33. A second pipe joint 35 for connecting a cooling water return pipe is arranged on the side of the outer surface of the water jacket 33 away from the first pipe joint 34. The first pipe joint 34 is connected to the cooling water supply pipe, and the second pipe joint 35 is connected to the cooling water return pipe. Then, the cooling water enters the space formed by the lower connecting pipe and the water jacket 33 through the first pipe joint 34. When the rubber ring 17 slightly expands due to the heat generated by the reaction of calcium oxide and water, the heat on the rubber ring 17 is conducted to the cooling water in the water jacket 33 through the lower connecting pipe 14. The cooling water absorbing heat is discharged to the cooling water return pipe through the second pipe joint 35, so that the rubber ring 17 shrinks and returns to its original state, thereby reducing the friction between the rubber ring 17 and the lower connecting pipe 14, and facilitating the smooth movement of the rubber ring 17.

[0050] Example 4

[0051] When the rubber ring 17 moves to the calcium oxide bin 5, the calcium oxide powder enters into the through hole 16 under the mutual extrusion with the rubber ring 17, and the amount of the calcium oxide powder entering into the through hole 16 is different, so that the sewage amount flowing through the water injection pipe 1 cannot be controlled;

[0052] To solve the above problems, please refer to Figures 1-8 The cam 23 is arranged in the circular groove 20, the lower surface of the cam 23 is connected and fixed with the positioning rod 24, the end of the positioning rod 24 away from the cam 23 is fixed in the calcium oxide bin 5 through a screw, and the positioning rod 24 plays a role of limiting the relative position of the cam 23 and the calcium oxide bin 5.

[0053] The area of the driving disc 19 covered by the tube 25 is provided with the circular hole 26, the circular hole 26 is arranged concentrically with the tube 25, the stud 21 is inserted into the circular hole 26, the end of the stud 21 away from the circular rod 28 is processed with the round head 31 matched with the cam 23, and the round head 31 realizes the smooth transition of the stud 21 and the cam 23.

[0054] The column head 21 is connected and fixed with a round rod 28 in the middle position of one side of the tubular cylinder 25, the round rod 28 penetrates a guide hole 32, the guide hole 32 is opened in the middle position of one side of a positioning disc 29, the positioning disc 29 is installed in the middle position of the tubular cylinder 25, the spring 30 is arranged between the positioning disc 29 and the column head 21, the spring 30 is sleeved on the round rod 28, the end of the round rod 28 away from the column head 21 is connected and fixed with a piston 27, the piston 27 is slidingly installed in the tubular cylinder 25, the end of the column head 21 away from the round rod 28 extends into the circular groove 20, when the driving disc 19 is driven to rotate by the servo motor 15, the cam 23 slides in the circular groove 20 relative to the driving disc 19, when one tubular cylinder 25 is inserted into the through port 16, the column head 21 in the tubular cylinder 25 inserted into the through port 16 contacts the cam 23, at this time, the cam 23 extrudes the column head 21, so that the column head 21 is retracted into the tubular cylinder 25, and then the column head 21 and the positioning disc 29 jointly extrude the spring 30 to make the spring 30 elastically deform, at the same time, the column head 21 drives the piston 27 to slide in the tubular cylinder 25 through the round rod 28, at this time, the piston 27 extrudes the calcium oxide powder in the tubular cylinder 25, so that the calcium oxide powder in the tubular cylinder 25 enters the through port 16, because there is calcium oxide powder on the side of the through port 16 away from the tubular cylinder 25, the calcium oxide powder at this position plays a role of supporting the calcium oxide powder in the through port 16, so as to prevent the calcium oxide powder in the through port 16 from falling from the through port 16 at will, when the tubular cylinder 25 is removed from the through port 16, the corresponding column head 21 no longer contacts the cam 23, at this time, the piston 27 reversely slides under the action of the elastic force of the spring 30, and then the calcium oxide powder in the calcium oxide bin 5 enters the tubular cylinder 25 under the driving of the piston 27, so as to prepare for filling the calcium oxide powder into the through port 16 next time, so that the amount of the calcium oxide powder filled into the through port 16 is the same each time, and the situation that the amount of the calcium oxide powder filled into the through port 16 is insufficient is avoided, the tubular cylinder 25 cooperates with the through port 16, so as to prevent the rubber ring 17 from being twisted in the moving process, at the same time, the tubular cylinder 25 cooperates with the rubber ring 17 in the moving process to play a role of loosening the calcium oxide powder, so as to prevent the calcium oxide powder from being bridged in the calcium oxide bin 5.

[0055] Example 5:

[0056] The calcium oxide and the sewage produce heat and calcium carbonate after the reaction in the water injection pipe 1, because the water flow direction in the water injection pipe 1 is along the length direction of the water injection pipe 1, so the calcium carbonate and the heat cannot be uniformly mixed in the sewage flowing through the water injection pipe 1;

[0057] To solve the above problems, please refer to Figure 1 、 Figure 11 and Figure 12The far end of the water injection pipe 1 from the ball valve 11 is connected to the water inlet pipe 2, the far end of the water inlet pipe 2 from the water injection pipe 1 is installed on one side of the mixing chamber 3 and the water inlet pipe 2 is communicated with the mixing chamber 3, the far end of the water outlet pipe 39 from the mixing chamber 3 is connected to the sewage pool through a pipeline, the upper end of the mixing chamber 3 is open and is provided with a detachable sealing cover 4, the lower surface of the sealing cover 4 is uniformly provided with a plurality of first baffles 36 and a plurality of second baffles 37, the first baffles 36 and the second baffles 37 are alternately arranged, the width of the first baffles 36 and the second baffles 37 is the same as the width of the internal space of the mixing chamber 3, the lower end of the first baffles 36 is provided with a gap from the bottom of the mixing chamber 3, the upper part of one side of the second baffles 37 is provided with a strip-shaped opening 38, the lower end of the second baffles 37 is attached to the bottom of the mixing chamber 3, the calcium oxide powder and the sewage are reacted and then flow into the space formed by the sealing cover 4 and the mixing chamber 3, and then the sewage mixed with calcium carbonate is mixed under the action of the first baffles 36 and the second baffles 37, and the heat generated by the calcium oxide and the sewage is diffused.

[0058] Although only some parts and embodiments of the present application have been illustrated and described, many modifications and changes can occur to those skilled in the art, for example: variations in the size, dimension, structure, shape and proportion of various elements, mounting arrangement, material usage, color, orientation, etc.

[0059] The above-mentioned embodiments are only preferred embodiment modes of the embodiments of the present application, and cannot be used to limit the scope of protection of the embodiments of the present application, and any non-essential changes and replacements made by those skilled in the art on the basis of the embodiments of the present application are within the scope of protection of the embodiments of the present application.

Claims

1. A denitrification and dephosphorization apparatus comprising a water injection pipe for injecting sewage water into a sewage pool, characterized by, The water injection pipe is provided with a ball valve at one end, a mixing mechanism communicating with the sewage pool at the other end, a semicircular pipe at one side, an upper connecting pipe and a lower connecting pipe at both ends of the semicircular pipe, the lower connecting pipe communicating with the water injection pipe at one end, the upper connecting pipe communicating with an upper hollow pipe through a water blowing mechanism at one end, the upper hollow pipe being provided with a lower hollow pipe parallel to the upper hollow pipe at the lower side, the lower hollow pipe communicating with the water injection pipe at one end, the lower hollow pipe, the lower connecting pipe and the upper connecting pipe being arranged perpendicularly to the water injection pipe, the upper hollow pipe and the lower hollow pipe communicating with a calcium oxide bin at one end, a rubber ring being arranged in the channel formed by the semicircular pipe, the lower connecting pipe, the lower hollow pipe, the calcium oxide bin, the upper hollow pipe and the upper connecting pipe, a plurality of through holes for storing calcium oxide being uniformly arranged on the outer surface of the rubber ring, the central axis of the through holes being arranged in parallel to the central axis of the water injection pipe, the outer diameter of the rubber ring being the same as the inner diameter of the semicircular pipe, the lower connecting pipe, the lower hollow pipe, the upper hollow pipe and the upper connecting pipe, a supporting wheel being rotatably arranged at the lower position in the calcium oxide bin, the rubber ring passing around the supporting wheel, a driving member being arranged at the lower position in the bin for driving the rubber ring to move. The driving member comprises a servo motor, the servo motor being arranged at the bottom of the calcium oxide bin, the output end of the servo motor extending into the calcium oxide bin, a connecting head being fixedly connected to the output end of the servo motor, the connecting head being fixed at the middle position of the top of a circular groove, the circular groove being arranged on the lower surface of a driving disc, a plurality of tube barrels being arranged at equal intervals on the annular side of the driving disc in cooperation with the through holes; A cam is arranged in the circular groove, a positioning rod being fixedly connected to the lower surface of the cam, the positioning rod being fixedly connected to the calcium oxide bin at one end away from the cam through a screw, a circular hole being arranged in the area covered by the tube barrels of the driving disc, the circular hole being arranged concentrically with the tube barrels, a stud being arranged in the circular hole, a circular rod being fixedly connected to the middle position of the side of the stud facing the tube barrels, the circular rod penetrating through a guide hole, the guide hole being arranged at the middle position of one side of a positioning disc, the positioning disc being arranged at the middle position of the tube barrel, a spring being arranged between the positioning disc and the stud, the spring being sleeved on the circular rod, a piston being fixedly connected to one end of the circular rod away from the stud, the piston being slidably arranged in the tube barrel, one end of the stud away from the circular rod extending into the circular groove, the one end of the stud away from the circular rod being processed into a round head in cooperation with the cam.

2. The apparatus for denitrification and dephosphorization according to claim 1, characterized by: The length of the tube barrel away from the driving disc arranged in the through hole is one third of the depth of the through hole.

3. The apparatus for denitrification and dephosphorization according to claim 1, characterized by: The blowing mechanism comprises a drying box, one end of the upper connecting pipe away from the semicircular pipe is connected to the drying box in communication, one end of the upper hollow pipe away from the calcium oxide bin is connected to the drying box in communication, the upper end of the drying box is open and is provided with a detachable box cover, the drying box is arranged on the upper side of the water injection pipe, one side of the drying box facing the ball valve is provided with a rectangular opening, the outer side of the rectangular opening is provided with an axial flow fan, the axial flow fan is fixedly connected with the drying box, the side of the drying box away from the axial flow fan is uniformly provided with a plurality of air outlets, the bottom of the drying box is provided with a drain hole, and the side of the drying box close to the rectangular opening is provided with a heating resistor electrically connected with the temperature controller.

4. The apparatus for denitrification and dephosphorization according to claim 1, characterized by: The mixing mechanism comprises a mixing chamber, one end of the water injection pipe away from the ball valve is connected to the water inlet pipe in communication, one end of the water inlet pipe away from the water injection pipe is arranged on one side of the mixing chamber and the water inlet pipe communicates with the mixing chamber, the side of the mixing chamber away from the water inlet pipe is provided with a water outlet pipe, one end of the water outlet pipe away from the mixing chamber is connected to the sewage pool through a pipeline in communication, the upper end of the mixing chamber is open and is provided with a detachable sealing cover, the lower surface of the sealing cover is uniformly provided with a plurality of first baffles and a plurality of second baffles, the first baffles and the second baffles are arranged alternately, the width of the first baffles and the second baffles is the same as the width of the internal space of the mixing chamber, the lower end of the first baffle has a gap with the bottom of the mixing chamber, and the upper position of one side of the second baffle is provided with a strip-shaped opening.

5. The apparatus for denitrification and dephosphorization according to claim 1, characterized by: The lower connecting pipe is provided with a water jacket fixedly connected with the lower connecting pipe, the outer surface of the water jacket is provided with a first pipe joint for connecting a cooling water supply pipe, and the outer surface of the water jacket away from the first pipe joint is provided with a second pipe joint for connecting a cooling water return pipe.

6. The apparatus for denitrification and dephosphorization according to claim 1, characterized by: The top of the calcium oxide bin is open, the top of the calcium oxide bin is provided with a detachable bin cover, and one side of the calcium oxide bin is provided with a vertically arranged strip-shaped groove. The top of the calcium oxide bin is open, the top of the calcium oxide bin is provided with a detachable bin cover, and one side of the calcium oxide bin is provided with a vertically arranged strip-shaped groove.

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