CN113058389B

CN113058389B - High-purity polyaluminum chloride liquid preparation device and preparation process

Info

Publication number: CN113058389B
Application number: CN202110223809.0A
Authority: CN
Inventors: 史永忠; 张劭霆; 俞锋
Original assignee: Jiangsu Lanyao Water Purifying Agent Co ltd
Current assignee: Jiangsu Lanyao Water Purifying Agent Co ltd
Priority date: 2021-03-01
Filing date: 2021-03-01
Publication date: 2023-02-17
Anticipated expiration: 2041-03-01
Also published as: CN113058389A

Abstract

The invention provides a preparation device and a preparation process of high-purity polyaluminum chloride liquid, and the preparation device comprises an exhaust fan arranged in an air outlet pipe, wherein the exhaust fan comprises a fan blade frame, a hinge pin, connecting rods, fan blades and a motor, two connecting rods are connected between two adjacent fan blades, the two adjacent connecting rods are hinged through the hinge pin, a torsional spring and a balancing weight are arranged on each hinge pin, the hinge pin positioned above the fan blades is connected with a universal joint inclined rod, the fan blades are provided with ball hinges, the limiting rod is hinged with the universal joint inclined rod, the fan blades are provided with ball grooves, a first positioning groove, a moving groove and a second positioning groove for limiting the outward inclination position of the limiting rod are arranged above the ball grooves, the fan blades in the initial position are in a vertical state, and the limiting rod and the universal joint inclined rod are positioned in the first positioning groove. When the fan works, the fan blades cannot swing back and forth due to air resistance, the operation is more stable, and the fan is not easy to damage. When the exhaust fan is started, the load of the motor is small, the starting is smooth, and the motor is protected; when the motor is stopped, the motor is stopped quickly, and potential safety hazards are reduced.

Description

High-purity polyaluminum chloride liquid preparation device and preparation process

Technical Field

The invention relates to the technical field of waste gas treatment, in particular to a device and a process for preparing high-purity polyaluminium chloride liquid.

Background

In the preparation process of the polyaluminium chloride liquid, a large amount of tail gas is generated, but a large amount of non-liquid effective components exist in the tail gas, particularly the tail gas has high temperature and is generally discharged from production equipment, so that air pollution and energy waste are caused firstly. Therefore, the tail gas in the production process of the polyaluminium chloride needs to be treated.

Patent CN209271127U earlier discloses a tail gas waste heat's utilization equipment in polyaluminium chloride production, and waste gas gets into the spray column, and the circulating pump lasts the effect, sprays the absorption liquid of spray column bottom through atomizer, under the effect of water vapor separator, breaks away from the moisture in the waste gas, makes waste gas discharge through the outlet duct, and before discharging, the circulating pump passes through the spiral pipe with the absorption liquid that becomes hot, carries out heat energy exchange in spiral pipe and outlet duct contact department to make the waste gas heating. But the rising circulation capacity of the outlet waste gas is still poor, and the heat energy utilization rate is insufficient. If a common exhaust fan is added at the outlet, the load of the motor is large when the exhaust fan is started, the starting is slow, the motor is damaged, and the motor is easy to damage; when the motor stops, the motor stops slowly, and potential safety hazards exist. And when the fan blades rotate, the fan blades swing back and forth due to air resistance, so that the exhaust fan is damaged due to vibration.

Disclosure of Invention

The invention aims to provide a device and a process for preparing high-purity polyaluminium chloride liquid, aiming at the problem of poor circulation capacity of outlet waste gas.

In order to achieve the purpose, the invention provides the following technical scheme: a high-purity poly-aluminum chloride liquid preparation device comprises an exhaust fan arranged in an air outlet pipe, wherein the exhaust fan comprises a fan blade frame, a hinge pin, connecting rods, fan blades and a motor, the fan blades can be arranged on the fan blade frame in an up-and-down deflection manner, the fan blade frame is fixedly connected with an output shaft electrically connected, two connecting rods are connected between the tops of two adjacent fan blades, the two adjacent connecting rods are hinged and connected through the hinge pin, the hinge pin is distributed above and at the left side and the right side of the corresponding fan blade, a torsional spring for resetting is arranged on each hinge pin, each hinge pin comprises a balancing weight positioned at the top, the hinge pin positioned above the corresponding fan blade is connected with a universal joint oblique rod, the top surface of the universal joint oblique rod is rotatably arranged at the bottom of the hinge pin, install ball joint on the flabellum, ball joint is including the hinge ball and fix the gag lever post on hinge ball, the gag lever post is connected with the side hinge of universal joint down tube, be equipped with the ball groove that is used for holding the hinge ball on the flabellum, the ball groove top is equipped with the first constant head tank that is used for fixing a position the gag lever post initial position, supply the motion groove of the inside and outside shift position of universal joint down tube and be used for restricting the second constant head tank that the gag lever post leaned out the inclined position, first constant head tank, the motion groove, the second constant head tank communicates in proper order, first constant head tank is perpendicular with the motion groove, the flabellum of initial position is vertical state, gag lever post and universal joint down tube are located first constant head tank.

Preferably, the fan blade frame comprises a fan blade fixing ring, a plurality of fixing plates fixed on the inner side of the fan blade fixing ring, and a spline ring connecting the fixing plates together, wherein skeleton grooves arranged at intervals are formed in the periphery of the fan blade fixing ring, a fan blade skeleton is fixedly connected to the middle of each fan blade, and the fan blade skeleton is rotatably inserted into the skeleton grooves.

Preferably, the inside protrusion of fixed plate is the spline end in the tip of spline circle, and the output shaft of motor is the motor shaft, has seted up on the motor shaft and has supplied spline end male keyway, and the outside of flabellum and motor is equipped with solid fixed cylinder, and the motor is including the motor cover that is located the outside, and the motor cover passes through the dead lever to be fixed on solid fixed cylinder.

Preferably, the moving groove has a first limiting surface located at the outer side and a third limiting surface for blocking the lower end of the universal joint inclined rod, and the second positioning groove has a second limiting surface inclined outwards.

Preferably, the fan blade comprises a fan blade main body and a cover plate which are connected in a split mode, the spherical groove, the moving groove and the second positioning groove are divided into two parts located on the fan blade main body and the cover plate, and the first positioning groove is located on the cover plate.

Preferably, the hinge pin comprises an upper hinge rod and a lower hinge rod which can rotate relatively, the hinge ends of two adjacent connecting rods are respectively fixed on the upper hinge rod and the lower hinge rod, and the torsion spring is arranged between the upper hinge rod and the lower hinge rod.

Preferably, there are six of the fan blades, twelve of the connecting rods and hinge pins.

The invention also provides a preparation process of the high-purity polyaluminum chloride liquid, an exhaust fan is adopted at the exhaust position of the waste gas, the waste gas in the spray tower is accelerated to rise into the water-vapor separator, and the moisture in the waste gas is separated.

The invention has the advantages that:

the invention improves the tail gas waste heat utilization link in the polymeric aluminum chloride liquid preparation device, and adds an exhaust fan before the tail gas is exhausted, thereby quickening the circulation of the outlet waste gas and improving the heat energy utilization rate. And set up the universal joint down tube and the ball joint of articulated connection between hinge pin and flabellum and hinge, with motion groove and the constant head tank cooperation on the flabellum for the exhaust fan can not receive air resistance's reason swing back and forth at the during operation flabellum, and the function is more stable, and the fan is difficult to damage. When the exhaust fan is started, the load of the motor is small, the starting is smooth, and the motor is protected; when the motor is stopped, the load of the motor is increased, the motor is stopped quickly, and the potential safety hazard is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a tail gas waste heat utilization device.

Fig. 2 is a schematic view of the exhaust fan when not in operation.

Fig. 3 is an enlarged view of a portion a when the exhaust fan is not operated.

Fig. 4 is a schematic view of the front view of the exhaust fan when it is activated.

Fig. 5 is an enlarged view of the exhaust fan at the time of startup in front view B.

Fig. 6 is a schematic view of the structure of the exhaust fan when it is activated.

Fig. 7 is an enlarged view at C when the exhaust fan is activated.

Fig. 8 is a schematic structural view of the exhaust fan in normal operation.

Fig. 9 is an enlarged view of the exhaust fan at normal operation D.

FIG. 10 is a schematic view of a fan blade frame.

Fig. 11 is a schematic view of a hinge pin construction.

Fig. 12 is a schematic view of a link structure.

FIG. 13 is a schematic view of a fan blade.

FIG. 14 is a schematic view of a blade cover plate.

FIG. 15 is a schematic view of a gimbal diagonal configuration.

Fig. 16 is a schematic view of a ball joint structure.

In the figure, 1, a fan blade frame; 101. a fan blade fixing ring; 102. a fixing plate; 103. a spline ring; 104. a spline end; 105. a framework groove; 2. a hinge pin; 201. a balancing weight; 202. a hinged cap; 203. the lower rod is hinged; 204. an upper rod is hinged; 3. a fixed cylinder; 4. a connecting rod; 401. a hinged end; 5. a fan blade; 501. a fan blade framework; 502. a first limit surface; 503. a second limiting surface; 504. a ball groove; 505. a third limiting surface; 506. a latch slot; 507. a latch block; 508. a first positioning groove; 509. a motion groove; 510. a second positioning groove; 511. a cover plate; 6. a motor shaft; 7. a motor; 8. a motor cover; 9. a fixing rod; 10. a gimbal diagonal; 1001. a first hinge hole; 1002. a second hinge hole; 11. the ball joint is adopted; 1101. hinging the ball; 1102. a limiting rod; 1103. a third hinge hole; 1104. a leading end; 21. a water-steam separator, 22 and an air outlet pipe; 24. an exhaust fan; 25. a spray tower; 26. and a circulating pump.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

As shown in fig. 1 to 16, a high purity polyaluminium chloride liquid preparation device comprises a spray tower 25, a water-vapor separator 21 is connected above the spray tower 25, the water-vapor separator 21 is communicated with an air outlet pipe 22, and an exhaust fan 24 is installed in the air outlet pipe 22. The spray tower 25 is provided with an atomizing nozzle for spraying absorption liquid, the bottom of the spray tower 25 is connected with a circulating pump 26 through a pipeline, a spiral pipe is connected between the circulating pump 26 and the atomizing nozzle in series, and the spiral pipe is wound on the periphery of the air outlet pipe 22.

The exhaust fan 24 includes:

the fan blade frame 1 comprises a fan blade fixing ring 101, a plurality of fixing plates 102 fixed on the inner side of the fan blade fixing ring 101, and a spline ring 103 for connecting the fixing plates 102 together, wherein the spline ring 103 is located inside the fan blade fixing ring 101, the end part of the fixing plate 102 protruding inwards out of the spline ring 103 is a spline end 104, and framework grooves 105 arranged at intervals are formed in the periphery of the fan blade fixing ring 101.

The fan blade 5 is characterized in that a fan blade framework 501 is fixedly connected to the middle of the fan blade 5, the fan blade framework 501 is rotatably inserted into the framework groove 105, the fan blade 5 is connected with the fan blade frame 1 on the inner side through the fan blade framework 501, and the fan blade 5 can deflect up and down. The outer sides of the fan blades 5 are connected together through connecting rods 4, two connecting rods 4 are connected between the tops of every two adjacent fan blades 5, and every two adjacent connecting rods 4 are hinged through a hinge pin 2.

The hinge pin 2 comprises a hinge upper rod 204 and a hinge lower rod 203 which can rotate relatively, a balancing weight 201 is fixed at the top of the hinge upper rod 204, and a hinge cap 202 used for assembling the hinge upper rod 204 and the hinge lower rod 203 is installed at the bottom of the hinge lower rod 203. The hinged ends 401 of two adjacent connecting rods 4 are respectively fixed on the upper hinged rod 204 and the lower hinged rod 203 of the hinge pin 2, and a torsion spring for resetting is installed between the upper hinged rod 204 and the lower hinged rod 203. That is, the hinge pins 2 are distributed above the fan blades 5 and on the left and right sides of the fan blades 5. The number of links 4 and hinge pins 2 is twice as many as the number of fan blades 5.

The bottom of the hinge pin 2 corresponding to the fan blade 5 is provided with a right-left inclined universal joint diagonal rod 10, the top plane of the universal joint diagonal rod 10 is provided with a first hinge hole 1001, and the side inclined plane of the universal joint diagonal rod 10 is provided with a second hinge hole 1002. The knuckle diagonal member 10 is rotatably coupled to the bottom of the hinge pin 2 through the first hinge hole 1001.

The outer apex angle department of flabellum 5 installs ball joint 11, and ball joint 11 includes articulated ball 1101 and fixes gag lever post 1102 on articulated ball 1101, and one side of gag lever post 1102 is equipped with third hinge hole 1103, and the upper end tail end of gag lever post 1102 is leading end 1104, and the terminal surface of leading end 1104 is triangle-shaped.

The diagonal joint shaft 10 and the ball joint 11 are connected together by a hinge shaft passing through the second hinge hole 1002 of the diagonal joint shaft 10 and the third hinge hole 1103 of the ball joint 11.

The fan blade 5 is provided with a spherical groove 504 for accommodating a hinged ball 1101, a moving groove 509 for allowing the universal joint inclined rod 10 to move inside and outside is communicated above the spherical groove 504, the length direction of the moving groove 509 is parallel to a fan blade framework 501 of the fan blade 5, the moving groove 509 is provided with a first limiting surface 502 located on the outer side and a third limiting surface 505 located on the left side or the right side and used for blocking the lower end of the universal joint inclined rod 10, the first limiting surface 502 is perpendicular to the length direction of the fan blade framework 501, the third limiting surface 505 is parallel to the length direction of the fan blade framework 501, the moving groove 509 is respectively communicated with a first positioning groove 508 for positioning the initial position of the limiting rod 1102 and a second positioning groove 510 for limiting the outward inclined position of the limiting rod 1102, and the second positioning groove 510 is provided with a second limiting surface 503 which is inclined upwards and outwards. The length direction of the first positioning groove 508 is perpendicular to the moving groove 509, the second positioning groove 210 is communicated with the moving groove 509 in parallel, both the moving groove 509 and the first positioning groove 508 can accommodate the universal joint diagonal rod 10 and the limiting rod 1102, and only the limiting rod 1102 can be accommodated in the second positioning groove 510.

The fan blade 5 comprises a fan blade main body and a cover plate 511 which are connected in a split mode, the spherical groove 504, the moving groove 509 and the second positioning groove 510 are respectively located on the fan blade main body and the cover plate, the first positioning groove 508 is located on the cover plate 511, a pin slot 506 is arranged on the fan blade main body, and a pin block 507 which is matched with the pin slot 506 in an inserted mode is arranged on the cover plate 511.

The below of flabellum 5 is connected with motor 7, and the output shaft of motor 7 is motor shaft 6, and motor shaft 6 passes through spline fixed connection with flabellum frame 1, specifically does, offers on the motor shaft 6 to supply spline end 104 male keyway, passes through spline structure fixed connection between motor shaft 6 and the fixed plate 102. The outside of flabellum 5 and motor 7 is equipped with solid fixed cylinder 3, and motor 7 is including the motor cover 8 that is located the outside, and motor cover 8 passes through dead lever 9 to be fixed on solid fixed cylinder 3, and four dead levers 9 equipartitions are around the bottom of motor cover 8.

The working principle of the present invention is now explained as follows:

in this embodiment, the number of the fan blades 5 is six. The initial position is that a straight angle is formed between two connecting rods 4 crossing over one fan blade 5, an obtuse angle is formed between two connecting rods 4 between two adjacent fan blades 5, twelve connecting rods 4 form a hexagonal structure, and the torsional spring maintains twelve connecting rods 4 in the hexagonal shape. When the fan blade 5 in the initial position is not in operation, as shown in fig. 2 and 3, the stop rod 1102 and the gimbal diagonal rod 10 in the initial position are located in the first positioning groove 508.

Taking the overlooking clockwise rotation as an example, during starting, because the balancing weight is attached above the fan blade 5, the upper part is heavier, the inertia is large, and the fan blade 5 can rotate after lagging when just starting, as shown in fig. 4, 5, 6 and 7, the fan blade 5 deflects, the lower end of the universal joint inclined rod 10 is propped against the third limiting surface 505, the wind resistance is reduced, and the motor is started smoothly. Under the effect of balancing weight 201 centrifugal force, the corresponding hinge pin 2 in flabellum 5 top outwards removes, and the hexagon tends to the dodecagon, as fig. 8, 9, when universal joint down tube 10 and gag lever post 1102 get into the motion groove 509, because the lower extreme of universal joint down tube 10 pushes up third spacing 505, flabellum 5 can't continue to deflect, no longer receive the windage influence and swing so far, and universal joint down tube 10 can continue outwards to deflect with gag lever post 1102. Finally, the leading end 1104 of the ball joint 11 snaps into the detent 510 and the exhaust fan operates normally.

When the motor is stopped, the centrifugal force is gradually weakened, the corresponding hinge pin 2 above the fan blade 5 moves inwards under the action of the elastic force of the torsion spring, the guide end 1104 is separated from the positioning groove 510, the universal joint inclined rod 10 and the limiting rod 1102 continuously deflect inwards to move against the friction force, and the twelve connecting rods tend to be in a regular hexagon shape. Finally, because the inertia of the lower part of the fan blade 2 is small, the rotation is stopped first, so that the fan blade 2 returns to be vertical, and the limit rod 1102 and the universal joint diagonal rod 10 enter the first positioning groove 508 to return to the initial position.

The guiding end 1104 is triangular to be more accurately engaged with the second positioning groove 510.

The provision of the second positioning groove 510 can increase stability. When the wind resistance is increased, the load of the motor shaft is increased, the rotating speed is reduced, and the hexagon may overcome the centrifugal force and the friction force to move inside and outside the moving groove 509 under the action of the torsion spring. The leading end 1104 is locked into the positioning slot 510, and the hexagon is retracted again, which is equal to the force applied to the hinge position where the universal joint diagonal rod is hinged with the ball, so that the leading end 1104 rotates according to the hinge ball 1101, moves in the moving slot 509 in the vertical direction, and is unlocked from the positioning slot 510, which requires a torsion spring to provide a larger force. Along with the hexagon becomes the in-process of twelve deformations, the line of the articulated position of universal joint down tube and ball articulated and articulated ball and its contained angle of projection on the horizontal plane constantly diminish, so need the power of torsional spring bigger, the windage is constantly changing in the combination reality environment, the result is just that the torsional spring can not overcome centrifugal force, or the torsional spring has overcome centrifugal force, but has not taken off the card yet, the windage has just become little, the centrifugal force overcomes the power of torsional spring again, so can not take off the card in the motion process, only when shutting down, counter weight ball centrifugal force disappears, the hexagon just can make guide end 1104 and constant head tank 510 take off the card under the effect of torsional spring. Namely, the connecting rod is reset against the friction force through the elasticity of the torsion spring.

A process for preparing high-purity poly-aluminum chloride liquid comprises a tail gas waste heat utilization link, wherein an exhaust fan 24 is additionally arranged in an air outlet pipe 22 to accelerate exhaust gas in a spray tower 25.

Simultaneously, continuously act through circulating pump 26, spray the absorption liquid of spray column 25 bottom through atomizer, the absorption liquid can absorb the partial temperature of waste gas, make self temperature rise, then waste gas constantly rises and gets into water vapor separator 21, under water vapor separator 21's effect, break away from the moisture in the waste gas, make waste gas discharge through outlet duct 22, before discharging, circulating pump 26 passes through the spiral pipe with the absorption liquid that becomes hot, carry out heat exchange in spiral pipe and outlet duct contact department, thereby make waste gas heating.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A high-purity poly aluminum chloride liquid preparation device is characterized in that: including establishing the exhaust fan in the outlet duct, the exhaust fan includes the flabellum frame, the hinge pin, the connecting rod, the flabellum, including a motor, an end cap, a controller, and a cover plate, the flabellum can be installed on the flabellum frame with deflecting from top to bottom, the output shaft fixed connection of flabellum frame and motor, be connected with two connecting rods between the top of two adjacent flabellums, two adjacent connecting rods pass through the hinge pin articulated connection, the hinge pin distributes in the correspondence top and the left and right sides of flabellum, be equipped with the torsional spring that is used for restoring to the throne on each hinge pin, each hinge pin is including the balancing weight that is located the top, the hinge pin that is located the flabellum and corresponds the top is connected with the universal joint down tube, the top surface of universal joint down tube is rotationally installed in the bottom of hinge pin, install the ball on the flabellum and articulate, the ball is articulated including articulated ball and fixing the gag lever on articulated ball, the gag lever post of gag lever post with the universal joint down tube side articulated connection, be equipped with the ball groove that is used for holding the articulated ball, the ball groove of hinge ball groove, the ball groove top is equipped with the first locating groove that is used for fixing the gag lever post initial position, supply the motion groove of the inside and outside the universal joint down tube, the motion groove and the second locating groove that is located the gag lever post vertical locating groove, the gag lever post constant head groove, lean out groove, the first locating groove, the motion groove that the second locating groove that is located in proper order, the second locating groove is located the vertical locating groove of the gag lever post.

2. The apparatus for preparing high-purity poly aluminum chloride liquid according to claim 1, wherein: the fan blade frame comprises a fan blade fixing ring, a plurality of fixing plates fixed on the inner side of the fan blade fixing ring and a spline ring for connecting the fixing plates together, skeleton grooves arranged at intervals are formed in the periphery of the fan blade fixing ring, a fan blade skeleton is fixedly connected to the middle of each fan blade, and the fan blade skeleton is rotatably inserted into the skeleton grooves.

3. The apparatus for preparing high-purity poly aluminum chloride liquid according to claim 2, wherein: the inside protrusion of fixed plate is the spline end in the tip of spline circle, and the output shaft of motor is the motor shaft, has seted up on the motor shaft and has supplied spline end male keyway, and the outside of flabellum and motor is equipped with solid fixed cylinder, and the motor is including the motor cover that is located the outside, and the motor cover passes through the dead lever to be fixed on solid fixed cylinder.

4. The apparatus for preparing high-purity poly aluminum chloride liquid according to claim 1, wherein: the motion groove is provided with a first limiting surface positioned at the outer side and a third limiting surface used for stopping the lower end of the universal joint inclined rod, and the second positioning groove is provided with a second limiting surface inclined outwards.

5. The apparatus for preparing high-purity poly aluminum chloride liquid according to claim 1, wherein: the fan blade comprises a fan blade main body and a cover plate which are connected in a split mode, the ball groove, the moving groove and the second positioning groove are respectively divided into two parts located on the fan blade main body and the cover plate, and the first positioning groove is located on the cover plate.

6. The apparatus for preparing high-purity poly aluminum chloride liquid according to claim 1, wherein: the hinge pin comprises a hinge upper rod and a hinge lower rod which can rotate relatively, the hinge ends of two adjacent connecting rods are respectively fixed on the hinge upper rod and the hinge lower rod of the hinge pin, and the torsion spring is installed between the hinge upper rod and the hinge lower rod.

7. The apparatus for the preparation of a high-purity polyaluminum liquid chloride according to any one of claims 1 to 6, wherein: six fan blades are provided, and twelve connecting rods and hinge pins are provided respectively.

8. A preparation process of high-purity polyaluminum chloride liquid is characterized by comprising the following steps: the apparatus for preparing high-purity poly aluminum chloride liquid as defined in any one of claims 1 to 7, comprising a waste heat utilization section of exhaust gas, wherein said exhaust fan is used at the exhaust gas outlet, and the exhaust gas in the spray tower is accelerated to rise into the water-vapor separator to separate the water in the exhaust gas.