Feeding device for producing polyaluminum chloride

Abstract

The utility model discloses a feeding device for producing polyaluminum chloride, which comprises a reaction kettle tank body, a stirring device, a powder feeding port, a liquid feeding pipe and a cold water pipe are arranged at the upper end part of the reaction kettle tank body, a heating device is arranged on the outer side wall of the reaction kettle tank body, a feeding device is arranged above the powder feeding port, and the liquid feeding pipe is connected with the heating device. The feeding device comprises a hopper, a material groove, a rotating wheel and a rotating motor, the hopper is arranged at the top of the material groove, the material groove is communicated with the powder feeding port, the rotating wheel is movably installed in the material groove, the outer side wall of the rotating wheel is tightly attached to the inner side wall of the material groove, and symmetrically-distributed grooves are formed in the outer side wall of the rotating wheel. The powder feeding device has the advantages that heat released by reaction is controlled by feeding quantitative powder, slurry boiling and overflowing caused by excessive one-time feeding of the powder are avoided, the rotating motor controls the rotating speed of the rotating wheel, namely, the feeding speed of the powder is controlled, and slurry boiling and overflowing caused by too high feeding speed are avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of polyaluminium chloride production equipment, especially to a feeding device for polyaluminium chloride production. BACKGROUND

[0002] Polyaluminium chloride (PAC) is an inorganic substance, a new water purification material and inorganic polymer coagulant, which is also called polyaluminium. Currently, the production process of polyaluminium chloride mostly uses hydrochloric acid, aluminium hydroxide and calcium aluminate powder to react. The mixture of hydrochloric acid and aluminium hydroxide in the reaction kettle is heated to 140℃ by steam and kept for 4 hours. Under this condition, the acid-soluble aluminium hydroxide reaction is carried out to obtain PAC semi-finished product. Then, calcium aluminate powder is added for polymerization reaction. During the process of adding calcium aluminate powder, if the feeding speed is too fast, the slurry will react violently and release a large amount of heat to make the slurry boil. At this time, cold water needs to be added to cool the slurry. If the cooling is not timely, the high-temperature slurry will overflow from the feeding port. SUMMARY

[0003] In view of the above prior art, the utility model provides a feeding device for polyaluminium chloride production, which mainly solves the technical problems in the above background.

[0004] To achieve the above purpose, the technical scheme of the utility model embodiment is as follows:

[0005] A feeding device for polyaluminium chloride production, comprising a reaction kettle body, a stirring device, a powder feeding port, a liquid feeding pipe and a cold water pipe are arranged at the upper end of the reaction kettle body, a heating device is arranged on the outer wall of the reaction kettle body, a discharge port is arranged at the bottom of the reaction kettle body, the discharge port is connected with a discharge pipe, a feeding device is arranged above the powder feeding port, the feeding device comprises a hopper, a chute, a rotating wheel and a rotating motor, the hopper is arranged at the top of the chute, the chute is connected with the powder feeding port, the rotating wheel is movably installed in the chute, the outer wall of the rotating wheel is close to the inner wall of the chute, symmetrical grooves are arranged on the outer wall of the rotating wheel, the rotating wheel is fixedly connected with a rotating shaft through a hole in the center of the rotating wheel, and the rotating shaft is connected with the output shaft of the rotating motor through the side wall of the feeding pipe.

[0006] Preferably, the heating device comprises a jacket, an air inlet pipe and an air outlet pipe, the outer side of the jacket is wrapped around the outer side of the reaction kettle body and the lower end, the air inlet pipe and the air outlet pipe are arranged on the same horizontal plane on the outer side of the jacket, and the air inlet pipe and the air outlet pipe are connected with the jacket.

[0007] Preferably, the stirring device comprises a stirring rod located at the axis position of the reactor tank body, a stirring motor is installed at the upper center of the reactor tank body, the output shaft of the stirring motor is connected with the stirring rod, and stirring blades are arranged on the stirring rod.

[0008] Preferably, a scraper is arranged at the bottom of the stirring rod, and the lower edge of the scraper is attached to the bottom curved surface of the reactor tank body.

[0009] Preferably, a thermometer sleeve hole is arranged on the reactor tank body, and a thermometer is arranged in the thermometer sleeve hole.

[0010] Preferably, a flowmeter is arranged on the cold water pipe.

[0011] Preferably, a ball valve is arranged on the discharge pipe, and an anti-sticking layer is sprayed on the inner surface and the outer surface of the inner wall of the discharge pipe and the ball valve core.

[0012] Preferably, a support seat is arranged below the rotary motor, and the support seat is fixedly connected with the upper end of the reactor tank body through a support rod.

[0013] Preferably, the liquid feeding pipe penetrates through the upper end of the reactor tank body and is located in the tank body.

[0014] The beneficial effects of the utility model lie in that the powder in the hopper is quantitatively loaded through the groove on the rotating wheel, then the rotating wheel is rotated by the rotary motor, the material in the groove automatically falls into the reactor due to gravity, the heat released in the reaction is controlled by feeding the quantitative powder, the slurry is prevented from boiling and overflowing due to excessive feeding, meanwhile, the rotating speed of the rotating wheel is controlled by the rotary motor, i.e. the feeding speed of the powder is controlled, the slurry is prevented from boiling and overflowing due to excessive feeding speed. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a structural schematic view of the feeding device for producing polyaluminum chloride in the embodiment of the application;

[0016] Figure 2 It is a sectional view of the feeding device for producing polyaluminum chloride in the embodiment of the application;

[0017] Figure 3 It is a sectional view of the feeding device for producing polyaluminum chloride in the embodiment of the application; Figure 2 It is an enlarged schematic view of part A;

[0018] Figure 4 It is a sectional view of the feeding device for producing polyaluminum chloride in the embodiment of the application;

[0019] EXPLANATION OF DRAWINGS:

[0020] 1, reaction kettle body; 2, stirring device; 201, stirring rod; 202, stirring motor; 203, stirring blade; 3, powder feeding port; 4, liquid feeding pipe; 5, cold water pipe; 6, heating device; 601, jacket; 602, air inlet pipe; 603, air outlet pipe; 7, discharge port; 8, discharge pipe, 9, ball valve; 10, feeding device; 1001, hopper; 1002, trough; 1003, runner; 1004, rotary motor; 1005, groove; 1006, rotating shaft; 11, scraper; 12, thermometer sleeve hole; 13, support seat, 14, support rod. DETAILED DESCRIPTION

[0021] The technical scheme of the present application is further described in detail below in combination with the drawings and specific embodiments. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. In the following description, the expression "some embodiments" describes a subset of all possible embodiments, but it should be understood that "some embodiments" can be the same subset or different subsets of all possible embodiments and can be combined with each other without conflict.

[0022] It should be further noted that when an element is referred to as being "fixed" to another element, it can be directly on the other element or there can be an intervening element. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there can be an intervening element. The terms "vertical", "horizontal", "inner", "outer", "left", "right", and similar expressions used herein are for the purpose of description only and are not intended to be the only implementation.

[0023] Embodiment 1

[0024] Please refer to the accompanying drawings Figures 1-4The application provides a feeding device for producing polyaluminum chloride, which comprises a reaction kettle body 1, a stirring device 2 arranged at the upper end of the reaction kettle body 1, a powder feeding port 3, a liquid feeding pipe 4 and a cold water pipe 5, a heating device 6 arranged on the outer wall of the reaction kettle body 1, a discharge port 7 arranged at the bottom of the reaction kettle body 1, a discharge pipe 8 connected with the discharge port 7, a feeding device 10 arranged above the powder feeding port 3, wherein the feeding device 10 comprises a hopper 1001, a chute 1002, a rotating wheel 1003 and a rotating motor 1004, the hopper 1001 is arranged at the top of the chute 1002, the chute 1002 is communicated with the powder feeding port 3, the rotating wheel 1003 is movably arranged in the chute 1002, the outer wall of the rotating wheel 1003 is close to the inner wall of the chute 1002, the outer wall of the rotating wheel 1003 is provided with symmetrically distributed grooves 1005, the rotating wheel 1003 is provided with a center hole, the rotating wheel 1003 is fixedly connected with a rotating shaft 1006 through the center hole, and the rotating shaft 1006 is connected with the output shaft of the rotating motor 1004.

[0025] In use, a certain amount of water is injected into the reaction kettle body 1 through the cold water pipe 5, then hydrochloric acid is injected through the liquid feeding pipe 4, a hydrochloric acid solution with a certain concentration is prepared, then the calculated and weighed aluminum hydroxide raw material is fed into the reaction kettle body 1 through the feeding device 10 and the powder feeding port 3, then the heating device 6 is started to heat the reaction kettle body 1, when the temperature of the materials in the kettle reaches 90℃, the heating device 6 is turned off, the temperature is increased to 100℃ by using the heat released by the reaction, the reaction is carried out for 3.0-3.5 hours, the PAC semi-finished product is obtained, the calculated calcium aluminate powder is added into the hopper 1001, under the action of gravity, the calcium aluminate powder fills the grooves 1005 of the rotating wheel 1003 in the chute 1002, then the rotating motor 1004 drives the rotating wheel 1003 to rotate through the rotating shaft 1006, the grooves 1005 with the calcium aluminate powder rotate to the lower part of the chute 1002, the calcium aluminate powder in the grooves 1005 automatically falls into the reaction kettle body 1 below due to gravity, the grooves 1005 without the calcium aluminate powder rotate to the upper part of the chute 1002, the calcium aluminate powder automatically falls into the grooves 1005 due to gravity, and the quantitative conveying of the materials is realized through the circulation and repetition, the heat released by the reaction is controlled by feeding a certain amount of powder, so that the slurry is prevented from boiling and overflowing due to excessive feeding amount, meanwhile, the rotating speed of the rotating wheel 1003 is controlled by the rotating motor 1004, that is, the feeding speed of the powder is controlled, so that the slurry is prevented from boiling and overflowing due to excessive feeding speed, if the temperature is too high during the feeding process, the slurry will react violently, the feeding process can be temporarily suspended, a small amount of cold water is added through the cold water pipe 5 to suppress the reaction intensity, so that the slurry is prevented from boiling and overflowing, and after the reaction is completed, the slurry is discharged through the discharge port 7 and the discharge pipe 8.

[0026] Specifically, the heating device 6 includes a jacket 601, an air inlet pipe 602 and an air outlet pipe 603, the outer side and the lower end of the reaction kettle body 1 are wrapped by the jacket 601, the air inlet pipe 602 and the air outlet pipe 603 are arranged on the upper part of the outer side of the jacket 601, and the air inlet pipe 602 and the air outlet pipe 603 are respectively connected with the jacket 601. The high-temperature steam is introduced into the jacket 601 through the air inlet pipe 602 and discharged through the air outlet pipe 603, thereby preheating and heat-insulating the reaction kettle body 1.

[0027] Specifically, the stirring device 2 includes a stirring rod 201 arranged at the axis position of the reaction kettle body 1, a stirring motor 202 arranged at the upper center of the reaction kettle body 1, an output shaft of the stirring motor 202 connected with the stirring rod 201, and stirring blades 203 arranged on the stirring rod 201. The stirring motor 202 drives the stirring rod 201 to rotate, so that the stirring blades 203 on the stirring rod 201 stir the slurry in the reaction kettle body 1, thereby accelerating the dissolution speed of the calcium aluminate powder, improving the reaction rate and mixing uniformity of the mixed liquid in the reaction kettle body 1.

[0028] Specifically, the stirring rod 201 is provided with a scraper 11, and the lower edge of the scraper 11 is attached to the bottom curved surface of the reaction kettle body 1. The scraper 11 is rotated to scrape the calcium aluminate powder deposits on the bottom of the reaction kettle body 1, so that the calcium aluminate powder deposits participate in the reaction again, thereby improving the resource utilization rate.

[0029] Specifically, the reaction kettle body 1 is provided with a thermometer sleeve hole 12, and a thermometer is arranged in the thermometer sleeve hole 12. The thermometer sleeve hole 12 is arranged at the top of the reaction kettle body 1, the thermometer is fixed in the thermometer sleeve hole 12, the temperature in the reaction kettle body 1 is monitored, the adjustment is facilitated, and the practicability and functionality of the reaction kettle are improved.

[0030] Specifically, the cold water pipe 5 is provided with a flowmeter. The flowmeter is used to accurately control the water injected into the reaction kettle body 1, prepare hydrochloric acid with a concentration range required by the process, and improve the practicability of the device.

[0031] Specifically, the discharge pipe 8 is provided with a ball valve 9, and the inner wall of the discharge pipe 8 and the inner and outer surfaces of the valve core of the ball valve 9 are sprayed with an anti-sticking layer. The ball valve 9 is used to control the discharge of the slurry, and the inner wall of the discharge pipe 8 and the inner and outer surfaces of the valve core of the ball valve 9 are sprayed with an anti-sticking layer, so that the material is prevented from sticking to the contact surface and blocking the discharge pipe 8.

[0032] Example 2

[0033] Please refer to the attached drawings Figures 1-4The difference between the embodiment and the embodiment 1 is that a supporting seat 13 is arranged below the rotary motor 1004, and the supporting seat 13 is fixedly connected with the upper end of the reaction kettle body 1 through a supporting rod 14. The rotary motor 1004 is supported by the supporting rod 14 and the supporting seat 13 on the reaction kettle body 1, and the stability of the rotary motor 1004 is improved.

[0034] Specifically, the liquid feeding pipe 4 is arranged in the kettle body through the upper end of the reaction kettle body 1. The outlet of the liquid feeding pipe 4 is arranged in the reaction kettle body 1. When the water overflows the pipe opening of the liquid feeding pipe 4, a large amount of acid mist generated when hydrochloric acid is added is prevented from being discharged from the discharging pipe 8 to pollute the environment, and the health and safety of the workers are ensured.

[0035] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, and all of them should be covered in the protection scope of the present application. The protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A feed device for polyaluminum chloride production, characterized in that, The utility model provides a kind of reaction kettle, including reaction kettle body, stirring device is arranged on the upper end of reaction kettle body, powder feeding port, liquid feeding pipe and cold water pipe, heating device is arranged on the outer wall of reaction kettle body, discharge port is arranged on the bottom of reaction kettle body, discharge pipe is connected to the discharge port, feeding device is arranged above the powder feeding port, the feeding device includes hopper, chute, runner and rotary motor, the hopper is arranged on the top of chute, the chute is communicated with the powder feeding port, the runner is movably installed in the chute, the outer wall of runner is close to the inner wall of chute, the outer wall of runner is equipped with symmetrically distributed grooves, the runner is fixedly connected with rotating shaft through hole, and the rotating shaft passes through the side wall of feeding pipe and is connected with the output shaft of rotary motor.

2. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, The heating device includes a jacket, an air inlet pipe and an air outlet pipe, the air inlet pipe and the air outlet pipe are arranged on the same horizontal plane on the outer side of the jacket, and the air inlet pipe and the air outlet pipe are communicated with the jacket.

3. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, The stirring device includes a stirring rod located on the axis of the reaction kettle body, a stirring motor is installed at the upper center of the reaction kettle body, the output shaft of the stirring motor is connected with the stirring rod, and stirring blades are arranged on the stirring rod.

4. The feeding device for producing polyaluminum chloride according to claim 3, characterized in that, The stirring rod is provided with a scraper at the bottom, and the lower edge of the scraper is attached to the bottom curved surface of the reaction kettle body.

5. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, A thermometer sleeve hole is arranged on the reaction kettle body, and a thermometer is arranged in the thermometer sleeve hole.

6. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, A flow meter is arranged on the cold water pipe.

7. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, A ball valve is arranged on the discharge pipe, and the inner and outer surfaces of the valve core of the ball valve are sprayed with an anti-sticking layer.

8. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, A support seat is arranged below the rotary motor, and the support seat is fixedly connected with the upper end of the reaction kettle body through a support rod.

9. The feeding device for producing polyaluminum chloride according to claim 1, characterized in that, The liquid feeding pipe passes through the upper end of the reaction kettle body and is located in the kettle body.

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