Preparation device of high-temperature dechlorination agent

Abstract

This invention relates to the field of dechlorination agent preparation technology, specifically disclosing a high-temperature dechlorination agent preparation apparatus, including a mixing tank. A powder cylinder and a water injection pipe are connected to the mixing tank. A feeding auger is rotatably arranged inside the powder cylinder. The feeding auger includes a central shaft and auger blades. The central shaft and the powder cylinder are coaxially rotatably connected. The auger blades are spirally wound around the central shaft and slide along the axial direction of the central shaft. A control component is provided on the powder cylinder to control the sliding of the auger blades. When the control component moves the auger blades from the powder cylinder into the mixing tank, the position of the auger blades corresponds to the outlet of the water injection pipe. When deionized water is introduced into the water injection pipe, it can wash away the powder on the auger blades and carry the powder into the mixing tank. This high-temperature dechlorination agent preparation apparatus of the present invention can improve the preparation quality of the high-temperature dechlorination agent.

Description

Technical Field

[0001] This invention relates to the field of dechlorination agent preparation technology, and specifically to a device for preparing a high-temperature dechlorination agent. Background Technology

[0002] Dechlorinating agents are porous adsorption-type dechlorination materials, mainly used to remove hydrogen chloride and other chlorine-containing impurities from gaseous or liquid chemical raw materials. Their active components are mainly metal oxides (such as zinc oxide, aluminum oxide, and calcium oxide), and they achieve dechlorination through a combination of physical adsorption and chemical reaction. They are suitable for fields such as synthetic ammonia, methanol production, and oil and gas processing, and can treat gases including hydrogen and coke oven gas.

[0003] High-temperature dechlorination agent is one type of dechlorination agent. The preparation process of high-temperature dechlorination agent mainly includes the following steps: raw material pretreatment, batching and mixing, molding, drying, etc. In the preparation process of high-temperature dechlorination agent, batching and mixing are usually carried out in mixing equipment. During the mixing process of raw materials in the mixing equipment, deionized water needs to be added to wet and agglomerate the powder, so as to form a plastic paste, which is then extruded or rolled into balls.

[0004] Chinese patent document CN213493436U discloses a preparation system for a high-temperature dechlorination agent, including a liquid-making tank and a mixer. The mixer has a liquid inlet and a powder inlet at the top and a discharge outlet at the bottom. The outlet of the liquid-making tank is connected to the liquid inlet. A powder feeding device is provided at the powder inlet. A motor is connected to a stirring shaft inside the mixer via a reducer. The stirring shaft has at least three sets of stirring paddles, which are staggered. Each stirring paddle has multiple blades, which are parallel to the stirring shaft. The blades have spikes at both ends. A discharge device is provided at the discharge outlet at the bottom of the mixer. An electronic screw scale is installed below the discharge end of the discharge device. A conveyor belt is located below the electronic screw scale. An extruder is located at the discharge end of the conveyor belt. The discharge end of the extruder is connected to a dryer.

[0005] During operation, solid powder is fed into the mixer through the powder inlet by the powder feeding device. Then, liquid raw materials in the liquid tank are fed into the mixer through the liquid inlet by the feeding pump, regulating valve and flow meter. Then, the motor is turned on to start the mixing. After the mixture is mixed evenly and passes the inspection, the material is discharged from the discharge device to the electronic screw scale through the discharge outlet. After being measured by the electronic screw scale, it is sent to the extruder by the conveyor belt. After being extruded and shaped by the extruder, it is dried and cured in the dryer to obtain the finished product.

[0006] In the above-mentioned technology, during the preparation of high-temperature dechlorination agent, the dosage of various ingredients to be mixed has certain precision requirements. Before the solid powder is mixed, when it is conveyed into the mixer by the feeding screw, a small amount of solid powder will remain on the blades of the feeding screw. This part of the solid powder cannot participate in the mixing, which affects the mixing precision of the material and results in poor preparation quality of the high-temperature dechlorination agent. Summary of the Invention

[0007] This invention provides a high-temperature dechlorination agent preparation apparatus, aiming to solve the technical problem in the prior art where the amount of various ingredients to be mixed in the high-temperature dechlorination agent preparation process has certain precision requirements. Before the solid powder is mixed, when it is conveyed into the mixer by the feeding screw, a small amount of solid powder remains on the blades of the feeding screw. This part of the solid powder cannot participate in the mixing, affecting the mixing precision of the material and resulting in poor quality of the high-temperature dechlorination agent.

[0008] This invention discloses a high-temperature dechlorination agent preparation apparatus, comprising a mixing tank, a powder cylinder and a water injection pipe connected to the mixing tank, a feeding auger rotatably disposed inside the powder cylinder, the feeding auger comprising a central shaft and auger blades, the central shaft and the powder cylinder being coaxially rotatably connected, the auger blades being spirally wound around the central shaft, and the auger blades slidingly engaging with the central shaft along its axial direction, the powder cylinder being provided with a control component for controlling the sliding of the auger blades, the control component causing the auger blades to move from the powder cylinder into the mixing tank, the position of the auger blades corresponding to the outlet of the water injection pipe, the water injection pipe being circulated with deionized water, which can wash away the powder on the auger blades and carry the powder into the mixing tank.

[0009] Beneficial effects: By adding powder into the powder cylinder, the rotating feeding auger continuously pushes the powder into the mixing tank. After the feeding is completed, deionized water is added into the mixing tank through the water injection pipe. At the same time, the control unit pushes the auger blades into the mixing tank. When the auger blades are below the connection point between the water injection pipe and the mixing tank, the deionized water flowing into the mixing tank through the water injection pipe comes into contact with the auger blades and cleans them. The deionized water can wash down the powder remaining on the auger blades. This powder can eventually participate in the mixing of the raw materials, thereby improving the mixing accuracy of the materials and thus improving the preparation quality of the high-temperature dechlorination agent.

[0010] Preferably, the inner wall of the mixing tank is connected to a cleaning silo and an extension pipe. There is a material discharge gap between the cleaning silo and the inner wall of the mixing tank. One end of the extension pipe is connected to the inner cavity of the cleaning silo, with the connection point located on the upper side of the cleaning silo. The other end is connected to a water injection pipe. An entry hole is provided on the side of the cleaning silo facing the material discharge gap. The auger blades pass through the material discharge gap and the entry hole from the powder cylinder and enter the cleaning silo. A water outlet hole is provided on the lower side of the cleaning silo.

[0011] Beneficial effects: After the control unit pushes the auger blades into the mixing tank, the auger blades enter the cleaning silo. The cleaning silo is relatively sealed. When deionized water is injected into the cleaning silo through the water injection pipe, it can flush the auger blades and reduce the phenomenon of irregular splashing of deionized water. That is, the cleaning silo can ensure that most of the deionized water and the flushed powder can be discharged downward through the water outlet and mixed with the materials in the mixing tank.

[0012] Preferably, one end of the central shaft near the axis of the mixing tank is inserted into the cleaning hopper and rotatably connected to the inner wall of the cleaning hopper. The central shaft is provided with a limiting component for restricting the powder entering the powder cylinder.

[0013] Preferably, the limiting component includes a cleaning baffle and a feeding baffle coaxially sleeved on the central shaft. The cleaning baffle is connected to the end of the auger blade near the axis of the mixing tank. A return spring is connected between the cleaning baffle and the inner wall of the cleaning silo. The feeding baffle is connected to the end of the auger blade away from the cleaning baffle. When the feeding baffle is in the initial position, the cleaning baffle blocks the access hole.

[0014] Beneficial effects: During the powder addition process, the cleaning baffle and the feeding baffle limit the area that the powder can reach. That is, the powder will basically not move to the side of the feeding baffle away from the auger blades or into the cleaning silo, further ensuring that the powder can participate in the mixing of raw materials and improve the preparation quality of high-temperature dechlorination agent.

[0015] Preferably, during the process of pushing the auger blades into the cleaning silo, the stroke of the cleaning baffle is less than that of the feeding baffle. The auger blades are made of elastic material and can undergo elastic deformation. After the auger blades enter the cleaning silo, the connection points of the water outlet and the extension pipe with the cleaning silo are located between the feeding baffle and the cleaning baffle.

[0016] Beneficial effects: When the control unit pushes the auger blades, the auger blades undergo elastic deformation under force, and their axial length is shortened. This reduces the axial space required after the blades enter the cleaning silo, and also reduces the length requirement of the cleaning silo. After the auger blades enter the cleaning silo, the relatively enclosed space formed between the feeding baffle and the cleaning baffle can be used for water flow and storage, increasing the contact area between the deionized water and the internal structure of the cleaning silo.

[0017] Preferably, the control component is a propulsion cylinder, which is fixedly connected to the end of the powder cylinder away from the mixing tank. A connecting ring is fixedly connected to the piston rod end of the propulsion cylinder, and the connecting ring is sleeved outside the central shaft and rotatably connected to the feeding partition.

[0018] Preferably, there is a gap between the edge of the auger blade located inside the powder cylinder and the inner wall of the powder cylinder, and a friction ring is fixedly connected to the edge of the feeding partition, with the edge of the friction ring in contact with the inner wall of the powder cylinder.

[0019] Preferably, the mixing tank is also connected to an auxiliary air pipe, one end of which is connected to the cleaning silo and communicates with the inner cavity of the cleaning silo, and the other end is connected to an external air source.

[0020] Preferably, a sealing airbag ring is fixedly connected to the wall of the access hole. The sealing airbag ring is connected to the auxiliary air pipe. In the natural state, the inner diameter of the sealing airbag ring is larger than the outer diameter of the friction ring. When the auxiliary air pipe is ventilated and the sealing airbag ring is inflated, the sealing airbag ring and the friction ring abut against the side away from the auger blade. A solenoid valve is provided at the connection between the sealing airbag ring and the auxiliary air pipe.

[0021] Preferably, the extension pipe is provided with an on / off valve, the cleaning silo is provided with multiple vent holes, the multiple vent holes are evenly arranged around the circumference of the cleaning silo, and the cleaning silo is provided with a control valve for controlling the opening and closing of the vent holes and the water outlet.

[0022] The beneficial effects of this invention are as follows: 1. In this invention, powder is added to the powder cylinder, and the rotating feeding auger continuously pushes the powder into the mixing tank. After the feeding is completed, deionized water is added to the mixing tank through the water injection pipe. At the same time, the control unit pushes the auger blades into the mixing tank. When the auger blades are below the connection point between the water injection pipe and the mixing tank, the deionized water flowing into the mixing tank through the water injection pipe comes into contact with the auger blades and cleans them. The water can wash down the powder remaining on the auger blades, and this part of the powder can finally participate in the mixing of the raw materials, thereby improving the mixing accuracy of the materials and thus improving the preparation quality of the high-temperature dechlorination agent.

[0023] 2. In this invention, during the powder addition process, the cleaning baffle and the feeding baffle limit the area that the powder can reach, that is, the powder will basically not move to the side of the feeding baffle away from the auger blades and into the cleaning silo, further ensuring that the powder can participate in the mixing of raw materials and improve the preparation quality of the high-temperature dechlorination agent. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0025] Figure 2 This is a partial cross-sectional view of the present invention, showing the connection relationship between the mixing tank and the stirring shaft.

[0026] Figure 3 This is a partial cross-sectional view of the present invention, showing the positional relationship between the water injection pipe and the mixing tank.

[0027] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0028] Figure 5 This is a partial cross-sectional view of the present invention, showing the connection relationship between the cleaning partition and the connecting bearing.

[0029] Figure 6 yes Figure 5 A magnified view of a section at point B.

[0030] Figure 7 This is a partial cross-sectional view of the present invention, showing the connection relationship between the auger blades and the cleaning baffle.

[0031] Figure label: 1. Mixing tank; 11. Agitator shaft; 12. Water injection pipe; 121. Extension pipe; 13. Material discharge gap; 14. Auxiliary air pipe; 2. Powder cylinder; 21. Feed hopper; 22. Metering valve; 23. Control component; 24. Connecting ring; 3. Feeding auger; 31. Central shaft; 32. Auger blade; 33. Feeding baffle; 331. Friction ring; 34. Cleaning baffle; 341. Return spring; 342. Connecting bearing; 4. Cleaning silo; 41. Access port; 42. Sealing airbag ring; 421. Solenoid valve; 43. Water outlet; 44. Exhaust port; 46. Control valve; 47. On / off valve. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1-7As shown, a high-temperature dechlorination agent preparation apparatus of the present invention includes a mixing tank 1, a powder cylinder 2 fixedly connected to the top of the mixing tank 1, and a water injection pipe 12. The top of the mixing tank 1 is provided with an inlet for raw material entry, and the bottom of the mixing tank 1 is provided with a discharge outlet for the mixed material discharge. The powder cylinder 2 and the water injection pipe 12 are both connected to the mixing tank 1. The powder cylinder 2 is used to add powder to the mixing tank 1, and the water injection pipe 12 is used to add deionized water to the mixing tank 1. A stirring shaft 11 is coaxially rotatably arranged inside the mixing tank 1, and the top of the mixing tank 1 is fixed... A motor is installed to drive the stirring shaft 11 to rotate. During the preparation of the high-temperature dechlorination agent, the raw materials are added to the mixing tank 1 from the feed port at the top of the mixing tank 1. Then the motor works to drive the stirring shaft 11 to rotate, and the raw materials are mixed by the stirring shaft 11. At the same time, some powder is added to the powder cylinder 2. This part of the powder enters the mixing tank 1 after passing through the powder cylinder 2 and participates in the mixing process. When water needs to be added during the mixing process, deionized water is added through the water injection pipe 12. After the mixing process is completed, the motor is turned off and the mixed material is discharged through the discharge port.

[0034] like Figure 1 , Figure 2 and Figure 3 As shown, a feed hopper 21 is fixedly connected and communicated above the powder cylinder 2. Powder can be poured into the powder cylinder 2 through the upper opening of the feed hopper 21. A metering valve 22 is provided on the feed hopper 21 to control the amount of powder entering the powder cylinder 2. A feeding auger 3 is rotatably installed inside the powder cylinder 2. The feeding auger 3 includes a central shaft 31 and auger blades 32. The central shaft 31 and the powder cylinder 2 are coaxially rotatably connected. The auger blades 32 are spirally wound on the central shaft 31. A motor for driving the central shaft 31 to rotate is fixedly installed at the end of the powder cylinder 2 away from the mixing tank 1. The motor is fixedly connected to the central shaft 31.

[0035] like Figure 3 , Figure 4 and Figure 5As shown, the auger blade 32 and the central shaft 31 are separate components. The auger blade 32 is circumferentially fixed relative to the central shaft 31 but can slide relative to it axially. The sliding direction is the length direction of the powder cylinder 2. The powder cylinder 2 is equipped with a control component 23 for controlling the sliding of the auger blade 32. The auger blade 32 has a spiral structure and is a plate made of elastic material (such as wear-resistant modified polyurethane elastomer). The auger blade 32 has a certain rigidity to better convey the powder. The central shaft 31 is equipped with a limiting component for restricting the powder entering the powder cylinder 2. The limiting component includes a cleaning baffle 34 and a feeding baffle 33 coaxially sleeved on the central shaft 31. The end of the auger blade 32 near the axis of the mixing tank 1 is fixedly connected to the cleaning baffle 34, and the end away from the axis of the mixing tank 1 is fixedly connected to the feeding baffle 33. The surfaces of the two baffles are circular and coaxially sleeved on the central shaft 31, and can also slide axially along the central shaft 31. The control component 23 is a propulsion cylinder, which is fixedly connected to the end of the powder cylinder 2 away from the mixing tank 1. The extension and retraction direction of its piston rod is parallel to the length direction of the powder cylinder 2. The piston rod of the propulsion cylinder is fixedly connected to a connecting ring 24, which is sleeved on the outside of the central shaft 31 and is coaxially rotatably connected to the feeding partition 33. When the piston rod of the propulsion cylinder moves, it can apply a pulling or pushing force to the feeding partition 33 through the connecting ring 24, thereby driving the auger blades 32 to move. The cross-section of the central shaft 31 is elliptical. The inner edges of the auger blades 32, the cleaning baffle 34, and the feeding baffle 33 are all in contact with the side wall of the central shaft 31, so that the four can rotate synchronously in the circumferential direction. During the process of adding powder into the mixing tank 1, the connection position between the feed hopper 21 and the powder cylinder 2 is located on the side of the feeding baffle 33 facing the cleaning baffle 34. The cleaning baffle 34 is located in the internal space of the mixing tank 1. When the feeding auger 3 rotates, the powder that enters the powder cylinder 2 through the feed hopper 21 is continuously pushed into the mixing tank 1 by the feeding auger 3.

[0036] like Figure 3 , Figure 4 and Figure 5As shown, a cleaning silo 4 and an extension pipe 121 are fixedly connected to the inner wall of the mixing tank 1. A material discharge gap 13 exists between the cleaning silo 4 and the inner wall of the mixing tank 1. One end of the extension pipe 121 is connected to the inner cavity of the cleaning silo 4, with the connection point located on the upper side of the cleaning silo 4. The other end is connected to the water injection pipe 12. A water outlet 43 is provided on the lower side of the cleaning silo 4. After water is introduced into the water injection pipe 12, deionized water enters the inner cavity of the mixing tank 1 through the extension pipe 121, the cleaning silo 4, and the water outlet 43 in sequence. The cleaning silo 4 faces... An inlet hole 41 is provided on one side of the material drop gap 13. The end of the central shaft 31 facing the axis of the mixing tank 1 passes through the material drop gap 13 and the inlet hole 41 and enters the cleaning silo 4, and is rotatably connected to the inner wall of the cleaning silo 4. When the feeding baffle 33 is in the initial position, the cleaning baffle 34 blocks the inlet hole 41. During the process of the feeding auger 3 pushing the powder, the cleaning baffle 34 is located in the cleaning silo 4. The powder leaving the powder cylinder 2 falls to the bottom of the inner cavity of the mixing tank 1 at the material drop gap 13. A return spring 341 is connected between the cleaning baffle 34 and the inner wall of the cleaning silo 4. The return spring 341 is located on the side of the cleaning baffle 34 away from the auger blade 32, and the return spring 341 and the cleaning baffle 34 are coaxially rotatably connected by a connecting bearing 342. The radial dimension of the inner cavity of the cleaning silo 4 is the same as the radial dimension of the cleaning baffle 34, and both are larger than the size of the access hole 41. During the process of the auger blade 32 pushing the powder, the cleaning baffle 34 blocks the access hole 41.

[0037] like Figure 3 , Figure 4 and Figure 5 As shown, when the piston rod of the propulsion cylinder applies a thrust to the feeding baffle 33, the auger blades 32 move towards the cleaning silo 4. Simultaneously, the auger blades 32 undergo elastic deformation, shortening the pitch and slightly increasing the radial dimensions of both their inner and outer edges. Therefore, the inner diameter of the powder cylinder 2 is set larger than the outer diameter of the auger blades 32, meaning there is a gap between the edge of the auger blades 32 and the inner wall of the powder cylinder 2, thus preventing obstruction of the deformation of the auger blades 32. A rubber friction ring 331 is fixedly connected to the edge of the feeding baffle 33. The edge of the friction ring 331 contacts the inner wall of the powder cylinder 2. As the feeding baffle 33 moves forward, the friction ring 331 scrapes the inner wall of the powder cylinder 2, allowing any remaining powder on the inner wall of the powder cylinder 2 to eventually enter the mixing tank 1.

[0038] like Figure 3 , Figure 4 and Figure 5As shown, during the process of the auger blade 32 moving closer to the axis of the mixing tank 1 under the push of the propulsion cylinder, due to the elasticity of the return spring 341 and the auger blade 32, the stroke of the cleaning baffle 34 is less than the stroke of the feeding baffle 33, that is, the relative distance between the two baffles is shortened, and the axial length of the auger blade 32 is reduced. When the feeding baffle 33 crosses the access hole 41, the auger blade 32 is completely located inside the cleaning silo 4. The position of the auger blade 32 corresponds to the water outlet of the water injection pipe 12. At this time, the connection point of the extension pipe 121 and the cleaning silo 4, as well as the water outlet 43, are all located between the cleaning baffle 34 and the feeding baffle 33. The water in the cleaning silo 4 can completely touch the structure between the cleaning baffle 34 and the feeding baffle 33. The powder attached to this part of the feeding auger 3 can be washed down by deionized water and flow out from the water outlet 43 together.

[0039] like Figure 4 , Figure 5 and Figure 6 As shown, a sealing airbag ring 42 is fixedly connected to the wall of the access hole 41. The sealing airbag ring 42 and the access hole 41 are coaxially arranged. An auxiliary air pipe 14 is also connected to the mixing tank 1. A solenoid valve 421 is fixedly installed on the cleaning silo 4. The solenoid valve 421 is a three-way valve. One end of the auxiliary air pipe 14 is connected to the sealing airbag ring 42 and the inner cavity of the cleaning silo 4 through the solenoid valve 421. The connection position between the solenoid valve 421 and the cleaning silo 4 is located on the side wall of the extension pipe 121. The other end of the auxiliary air pipe 14 extends out of the mixing tank 1 and is connected to an external air source. When the sealing airbag ring 42 is not inflated, the inner diameter of the sealing airbag ring 42 is larger than the outer diameter of the friction ring 331. That is, during the process of the feeding partition 33 crossing the access hole 41, the friction ring 331 does not contact the sealing airbag ring 42. After the feeding partition 33 enters the cleaning silo 4, the air source is turned on, and the solenoid valve 421 controls the auxiliary air pipe 14 to inflate the sealing airbag ring 42. The sealing airbag ring 42 expands, and its inner diameter decreases. Finally, the sealing airbag ring 42 and the friction ring 331 abut against the side away from the auger blade 32, and the access hole 41 is sealed again. The water entering the cleaning silo 4 can only be discharged through the water outlet 43 and cannot be discharged through the access hole 41.

[0040] like Figure 5 , Figure 6 and Figure 7 As shown, there is a gap between the outer edge of the auger blade 32 inside the cleaning silo 4 and the inner wall of the cleaning silo 4. After water injection, the water in the cleaning silo 4 is basically left on the bottom wall of the inner wall of the cleaning silo 4. Then the air source is turned on again, the solenoid valve 421 opens and releases the gas in the sealing airbag ring 42, and at the same time opens the passage between the auxiliary air pipe 14 and the cleaning silo 4, inputting airflow into the cleaning silo 4. After passing through the cleaning silo 4, the airflow is discharged through the water outlet 43, which can also carry away most of the residual water.

[0041] like Figure 6and Figure 7 As shown, during the process of removing moisture from the cleaning silo 4 by airflow, since the airflow inlet and outlet are both single fixed points and the gas flow direction is relatively fixed, the small amount of moisture attached to the feeding auger 3 cannot be carried off by the airflow in time. Therefore, airflow is chosen to dry this part of the moisture. To improve drying efficiency and reduce airflow dead zones, multiple exhaust holes 44 are provided on the cleaning silo 4, which are evenly arranged around the circumference of the cleaning silo 4. An on / off valve 47 is provided on the extension pipe 121, and a control valve 46 is provided on the cleaning silo 4 to control the opening and closing of the exhaust holes 44 and the water outlet 43. During the drying process, the on / off valve 47 is opened, allowing the airflow in the auxiliary air pipe 14 to flow to the control valve 46. The control valve 46 is opened, causing each exhaust hole 44 to open, so that the gas in the cleaning silo 4 can overflow from the cleaning silo 4 at multiple spatial locations. This reduces the airflow dead zones in various structures within the cleaning silo 4 and improves the drying efficiency.

[0042] The implementation principle of the high-temperature dechlorination agent preparation device of the present invention is as follows: When preparing the high-temperature dechlorination agent, the raw materials are added into the mixing tank 1 from the feed port at the top of the mixing tank 1. Then the motor works and drives the stirring shaft 11 to rotate. The raw materials are mixed by the stirring shaft 11. At the same time, some powder is added into the powder cylinder 2. This part of the powder enters the mixing tank 1 after passing through the powder cylinder 2 and participates in the mixing process. After the powder is pushed out, the central shaft 31 stops rotating. The first step is to start the propulsion cylinder so that the feeding baffle 33 and the auger blade 32 are both inside the cleaning silo 4. Then the air source is started, and the solenoid valve 421 adjusts the airflow direction to expand the sealing airbag ring 42. Then the water injection pipe 12 introduces deionized water into the cleaning silo 4. The deionized water washes the auger blade 32, the central shaft 31, the surfaces of the two baffles and the friction ring 331, and carries the residual powder out through the water outlet 43 into the mixing tank 1. In the second step, the water supply pipe 12 stops supplying water, the auxiliary air pipe 14 introduces gas again, and the solenoid valve 421 causes the airflow to enter the cleaning chamber 4. Under the action of the airflow, most of the water remaining in the cleaning chamber 4 can flow out from the water outlet 43. During the first two steps, all exhaust ports 44 are closed. In the third step, the opening and closing valve 47 is opened, allowing the airflow to reach the control valve 46. The control valve 46 opens all exhaust ports 44 and increases the airflow intensity in the auxiliary air pipe 14. The airflow in the cleaning silo 4 can flow out from the exhaust ports 44 and the water outlet 43. The moisture on the auger blades 32 and the two partitions is quickly dried. Then the auger blades 32 can return to the powder cylinder 2.

[0043] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A preparation device of high-temperature dechlorination agent, comprising a mixing tank (1), a powder cylinder (2) and a water injection pipe (12) are connected to the mixing tank (1), a feeding auger (3) is arranged in the powder cylinder (2), characterized in that, The feeding auger (3) includes a central shaft (31) and auger blades (32). The central shaft (31) and the powder cylinder (2) are coaxially rotatably connected. The auger blades (32) are spirally wound on the central shaft (31). The auger blades (32) slide along the axial direction of the central shaft (31) and are engaged with the central shaft (31). The powder cylinder (2) is provided with a control component (23) for controlling the sliding of the auger blades (32). When the control component (23) moves the auger blades (32) from the powder cylinder (2) into the mixing tank (1), the position of the auger blades (32) corresponds to the outlet of the water injection pipe (12). When deionized water is introduced into the water injection pipe (12), it can wash away the powder on the auger blades (32) and carry the powder into the mixing tank (1).

2. The apparatus for preparing a high-temperature dechlorination agent according to claim 1, characterized by, The inner wall of the mixing tank (1) is connected to a cleaning silo (4) and an extension pipe (121). There is a material drop gap (13) between the inner wall of the cleaning silo (4) and the mixing tank (1). One end of the extension pipe (121) is connected to the inner cavity of the cleaning silo (4), and the connection point is located on the upper side of the cleaning silo (4). The other end is connected to the water injection pipe (12). The cleaning silo (4) has an access hole (41) on the side facing the material drop gap (13). The auger blade (32) enters the cleaning silo (4) after passing through the material drop gap (13) and the access hole (41) from the powder cylinder (2). The cleaning silo (4) has a water outlet hole (43) on the lower side.

3. The apparatus for preparing a high-temperature dechlorination agent according to claim 2, characterized by, The central shaft (31) is inserted into the cleaning silo (4) at one end near the axis of the mixing tank (1) and is rotatably connected to the inner wall of the cleaning silo (4). A limiting component is provided on the central shaft (31) to restrict the powder entering the powder cylinder (2).

4. The apparatus for preparing a high-temperature dechlorination agent according to claim 3, characterized by The limiting components include a cleaning baffle (34) and a feeding baffle (33) coaxially sleeved on the central shaft (31). The cleaning baffle (34) and the end of the auger blade (32) near the axis of the mixing tank (1) are connected. A return spring (341) is connected between the cleaning baffle (34) and the inner wall of the cleaning silo (4). The feeding baffle (33) is connected to the end of the auger blade (32) away from the cleaning baffle (34). When the feeding baffle (33) is in the initial position, the cleaning baffle (34) blocks the access hole (41).

5. The apparatus for preparing a high-temperature dechlorination agent according to claim 4, characterized by During the process of pushing the auger blade (32) into the cleaning silo (4), the stroke of the cleaning baffle (34) is less than that of the feeding baffle (33). The auger blade (32) is made of elastic material and can undergo elastic deformation. After the auger blade (32) enters the cleaning silo (4), the connection points of the water outlet (43) and the extension pipe (121) with the cleaning silo (4) are located between the feeding baffle (33) and the cleaning baffle (34).

6. The apparatus for preparing a high-temperature dechlorination agent according to claim 4, characterized by The control component (23) is a propulsion cylinder, which is fixedly connected to the end of the powder cylinder (2) away from the mixing tank (1). The piston rod end of the propulsion cylinder is fixedly connected to a connecting ring (24), which is sleeved on the outside of the central shaft (31) and rotatably connected to the feeding partition (33).

7. The apparatus for preparing a high-temperature dechlorination agent according to claim 6, characterized by There is a gap between the edge of the auger blade (32) located in the powder cylinder (2) and the inner wall of the powder cylinder (2), and a friction ring (331) is fixedly connected to the edge of the feeding partition (33), and the edge of the friction ring (331) is in contact with the inner wall of the powder cylinder (2).

8. The apparatus for preparing a high-temperature dechlorination agent according to claim 7, characterized by An auxiliary air pipe (14) is also connected to the mixing tank (1). One end of the auxiliary air pipe (14) is connected to the cleaning silo (4) and communicates with the inner cavity of the cleaning silo (4), while the other end is connected to an external air source.

9. The apparatus for preparing a high-temperature dechlorination agent according to claim 8, characterized in that, A sealing airbag ring (42) is fixedly connected to the wall of the access hole (41). The sealing airbag ring (42) is connected to the auxiliary air pipe (14). In the natural state, the inner diameter of the sealing airbag ring (42) is larger than the outer diameter of the friction ring (331). When the auxiliary air pipe (14) is ventilated and the sealing airbag ring (42) is inflated, the sealing airbag ring (42) and the friction ring (331) abut against the side away from the auger blade (32). A solenoid valve (421) is provided at the connection between the sealing airbag ring (42) and the auxiliary air pipe (14).

10. The apparatus for preparing a high-temperature dechlorination agent according to claim 9, characterized in that, An opening and closing valve (47) is provided on the extension pipe (121), and multiple vent holes (44) are provided on the cleaning silo (4). The multiple vent holes (44) are evenly arranged around the circumference of the cleaning silo (4). A control valve (46) for controlling the opening and closing of the vent holes (44) and the water outlet (43) is provided on the cleaning silo (4).

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