CN215505519U - Concentrated crystallization device for producing monohydrate zinc sulfate - Google Patents

Abstract

The utility model relates to a concentration crystallization device for producing monohydrate zinc sulfate, which comprises an evaporation tank, wherein the left side of the evaporation tank is connected with an observation hole, the top of the evaporation tank is communicated with a blanking pipe, the top end of the blanking pipe is connected with a material conveying protective pipe, the right end of the material conveying protective pipe is fixedly connected with a heat treatment tank, so that the condition of temperature shock during the process of injecting materials into the material conveying pipe is avoided, the heating rate is improved, the condition that crystals are separated out due to the temperature change during the process of conveying stock solution with higher concentration is avoided, the condition of blocking the material conveying pipe is avoided, the temperature of the conveyed materials can be more comprehensively maintained, the omnibearing heat preservation is effectively performed on the material conveying pipe, the design structure is more reasonable, the practicability is greatly improved, the uniform stirring can be more comprehensively performed in the rotating process of a U-shaped frame, the materials attached to the inner wall of the evaporation tank can be scraped, avoid the occurrence of wall sticking and coking of the concentrated crystals.

Description

Concentrated crystallization device for producing monohydrate zinc sulfate

Technical Field

The utility model relates to a concentration crystallization device for producing zinc sulfate monohydrate, belonging to the technical field of concentration crystallization equipment.

Background

The production flow of the zinc sulfate monohydrate comprises the following steps: the method comprises the steps of zinc oxide rinsing → zinc oxide + sulfuric acid → middle leaching reaction → rough filtration → hydrogen peroxide addition + iron removal → zinc oxide addition, pH value adjustment → filter pressing → zinc powder addition, cadmium removal → filter pressing → multiple-effect evaporation → concentrated crystallization → centrifugal dehydration → drying → packaging, wherein in the step of concentrated crystallization, in order to reduce steam required by the evaporated crystallization, the concentration of a stock solution is improved as much as possible, however, in the step of concentration, the temperature is reduced to be close to room temperature when the stock solution with higher concentration is conveyed, crystals are easy to precipitate, but the existing device does not have an all-round heat preservation structure for a material conveying pipeline, and in the stirring process in an evaporation tank, the stirring is easy to cause uneven, the crystals are uneven, the concentrated crystals are easy to stick to walls and coke, and therefore, the concentrated crystallization device for producing the zinc sulfate monohydrate is provided.

SUMMERY OF THE UTILITY MODEL

The technical problem to be solved by the utility model is to overcome the existing defects, provide a concentration and crystallization device for producing the zinc sulfate monohydrate, and effectively solve the problems in the background technology.

In order to solve the technical problems, the utility model provides the following technical scheme:

the concentrated crystallization device for producing the zinc sulfate monohydrate comprises an evaporating pot, wherein an observation hole is connected to the left side of the evaporating pot, a blanking pipe is connected to the top of the evaporating pot in a through mode, the top end of the blanking pipe is connected with a conveying protective pipe, and a heat treatment tank is fixedly connected to the right end of the conveying protective pipe.

As a further description of the above scheme, heat treatment tank includes the first jar of body, inlet pipe, the inlet pipe set up with first jar of body top side, first jar of internal wall top and below equidistance are equipped with heating coil respectively, first jar of internal chamber is stretched into to the inlet pipe bottom, and fixedly connected with conveying pipeline.

As a further description of the above scheme, the right side of the first tank body is provided with a fan in a run-through manner, the material conveying protection pipe comprises a first L-shaped bent pipe and a second L-shaped bent pipe, the second L-shaped bent pipe is arranged in an inner cavity of the first L-shaped bent pipe, the first L-shaped bent pipe penetrates through the inner cavity of the first tank body, and the position of the fan corresponds to the right end position of the first L-shaped bent pipe.

As a further description of the above scheme, the right end of the second L-shaped elbow is fixedly connected with the feed delivery pipe in a penetrating manner, the inner wall of the first L-shaped elbow is fixedly connected with the heat preservation cotton, the bottom end of the second L-shaped elbow is fixedly connected with the sealing ring in a sleeved manner, the aperture of the sealing ring is equal to that of the second L-shaped elbow, the top side of the sealing ring is fixedly connected with the bottom end of the first L-shaped elbow, and the bottom of the sealing ring is fixedly connected with the feeding pipe in a penetrating manner.

As the further description of above-mentioned scheme, evaporating pot bottom fixedly connected with driving motor, evaporating pot bottom left side link up and is equipped with the discharging pipe, driving motor's output shaft stretches into the evaporating pot inner chamber, and fixedly connected with dwang, be equipped with helical blade on the dwang outer wall.

As the further description of the scheme, the left side and the right side of the rotating rod are symmetrically provided with the U-shaped frames, the spiral blades are arranged on the inner sides of the U-shaped frames, the outer walls of the U-shaped frames are fixedly connected with the scraping plates, and the outer sides of the scraping plates are attached to the inner walls of the evaporation tanks.

The utility model has the beneficial effects that:

1. by arranging the heating coil and the fan, the heating coil can heat the temperature in the inner cavity of the first tank body to a proper temperature, so that the condition of sudden temperature drop in the process of injecting materials into the conveying pipe is avoided, the heating rate is improved, meanwhile, the fan blows the high temperature to the inner cavity of the first L-shaped bent pipe, the full-open heating operation can be carried out on all positions through which the materials flow, and the condition that the conveying pipeline is blocked due to crystal precipitation caused by temperature change when the stock solution with higher concentration is conveyed is avoided;

2. by arranging the first L-shaped bent pipe, the second L-shaped bent pipe and the sealing ring, a larger space is formed between the first L-shaped bent pipe and the second L-shaped bent pipe, heat conveyed in the inner cavity of the first tank body can be circulated in the space, and the temperature of conveyed materials can be more comprehensively maintained under the matching action of heat-insulating cotton, so that the conveying pipeline can be effectively and comprehensively insulated, the design structure is more reasonable, and the practicability is greatly improved;

3. through setting up driving motor, helical blade, U type frame and scraper blade, can relapse upwards promote the solution with evaporating pot bottom position, thereby can be at the rotatory in-process of U type frame, can be more comprehensive evenly stir, U type frame rotates in evaporating pot inner chamber simultaneously, the scraper blade in the U type frame outside rotates on the evaporating pot inner wall, can strike off adnexed material on the evaporating pot inner wall, avoid concentrated crystallization the condition emergence of gluing wall and coking to appear.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

FIG. 1 is a schematic diagram showing the appearance structure of a concentration crystallization device for producing zinc sulfate monohydrate according to the present invention.

FIG. 2 is a schematic cross-sectional view of the heat treatment tank of the concentration and crystallization apparatus for producing zinc sulfate monohydrate of the present invention.

FIG. 3 is a schematic sectional view of a feed delivery protection pipe of the apparatus for concentration crystallization of zinc sulfate monohydrate of the present invention.

FIG. 4 is a schematic view of the internal structure of an evaporation tank of the concentration and crystallization device for producing zinc sulfate monohydrate of the present invention.

Reference numbers in the figures: 1. an evaporator tank; 2. an observation hole; 3. a discharging pipe; 4. a material conveying protective pipe; 5. a heat treatment tank; 6. a first tank; 7. a feed pipe; 8. a heating coil; 9. a delivery pipe; 10. a fan; 11. a first L-bend; 12. a second L-bend; 13. heat preservation cotton; 14. a seal ring; 15. a drive motor; 16. a discharge pipe; 17. rotating the rod; 18. a helical blade; 19. a U-shaped frame; 20. a scraper.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Referring to fig. 1-4, the present invention provides a technical solution: production zinc sulfate monohydrate's concentrated crystallization device, including evaporating pot 1, 1 left side of evaporating pot is connected with observation hole 2, 1 top through connection of evaporating pot has unloading pipe 3, 3 tops of unloading pipe are connected with defeated material protective tube 4, 4 right-hand member fixedly connected with heat treatment tank 5 of defeated material protective tube.

Specifically, as shown in fig. 2-3, the heat treatment tank 5 includes a first tank 6 and a feeding pipe 7, the feeding pipe 7 is disposed on a top side of the first tank 6, heating coils 8 are disposed above and below an inner wall of the first tank 6 at equal intervals, a bottom end of the feeding pipe 7 extends into an inner cavity of the first tank 6 and is fixedly connected with a feeding pipe 9, a fan 10 is disposed on a right side of the first tank 6 in a penetrating manner, the heating coil 8 and the fan 10 are disposed, the feeding pipe 9 is started before a material is conveyed, the heating coil 8 can raise a temperature in the inner cavity of the first tank 6 to a proper temperature, a sudden temperature drop during the process of the material being injected into the feeding pipe 9 is avoided, the fan 10 is started, wind power of the fan 10 can accelerate contact between the temperature inside the first tank 6 and the feeding pipe 9, heating rate is increased, and meanwhile the fan 10 blows a high temperature forward to an inner cavity of the first L-shaped bent pipe 11, can carry out the heating operation of putting for completely to each position that the material flowed through, the temperature changes and leads to appearing the crystal when avoiding carrying the stock solution that the concentration is higher, the condition of blockking up the conveying pipeline takes place, defeated material protective pipe 4 includes first L type return bend 11, second L type return bend 12 sets up and first L type return bend 11 inner chamber, first L type return bend 11 runs through the inner chamber of the first jar of body 6, the position of fan 10 corresponds with first L type return bend 11 right-hand member position, second L type return bend 12 right-hand member and conveying pipeline 9 link up fixed connection, fixedly connected with heat preservation cotton 13 on the first L type return bend 11 inner wall, second L type return bend 12 bottom cup joints and is fixed with sealing ring 14, the aperture size of sealing ring 14 equals with the aperture size of second L type return bend 12, sealing ring 14 top side and first L type return bend 11 bottom fixed connection, and bottom and unloading pipe 3 link up fixed connection, through setting up first L type return bend 11, second L type return bend 12 and sealing ring 14, after injecting into the material to inlet pipe 7, can get into inside second L type return bend 12 through conveying pipeline 9, get into 1 inner chamber of evaporating pot at last, there is great space between first L type return bend 11 and the second L type return bend 12, can circulate the heat of carrying in 6 inner chambers of the first jar body in its space, under the cotton 13 complex effect of heat preservation, can be more comprehensive carry out the temperature to the material of conveying and keep, effectual carry out omnidirectional heat preservation to the conveying pipeline, design structure is more reasonable, the practicality improves greatly.

Specifically, as shown in fig. 4, fixedly connected with driving motor 15 is arranged at the bottom of evaporating pot 1, discharging pipe 16 is arranged on the left side of the bottom of evaporating pot 1 in a penetrating manner, the output shaft of driving motor 15 extends into the inner cavity of evaporating pot 1, fixedly connected with rotating rod 17 is arranged on the outer wall of rotating rod 17, spiral blades 18 are arranged on the outer wall of rotating rod 17, U-shaped frames 19 are symmetrically arranged on the left and right sides of rotating rod 17, spiral blades 18 are arranged on the inner sides of U-shaped frames 19, scrapers 20 are fixedly connected onto the outer wall of U-shaped frames 19, the outer sides of scrapers 20 are attached to the inner wall of evaporating pot 1, driving motor 15 is started by arranging driving motor 15, spiral blades 18, U-shaped frames 19 and scrapers 20, the output shaft of driving motor 15 drives rotating rod 17 to rotate, and spiral blades 18 on the outer wall of rotating rod 17 can lift the solution at the bottom of evaporating pot 1 repeatedly upwards in the rotating process, thereby can be at the rotatory in-process of U type frame 19, can be more comprehensive evenly stir, U type frame 19 rotates in 1 inner chamber of evaporating pot simultaneously, and scraper blade 20 in the U type frame 19 outside rotates on 1 inner wall of evaporating pot, can strike off adnexed material on 1 inner wall of evaporating pot, avoids concentrated crystallization to appear sticking to the wall and the condition emergence of coking.

When the utility model is used, the heating coil 8 is started before the material conveying pipe 9 conveys materials, the heating coil 8 can heat the temperature in the inner cavity of the first tank body 6 to a proper temperature, the condition that the temperature suddenly drops in the process of injecting the materials into the material conveying pipe 9 is avoided, the fan 10 is started, the wind power of the fan 10 can accelerate the contact between the temperature in the first tank body 6 and the material conveying pipe 9, the heating rate is improved, meanwhile, the fan 10 blows the high temperature forwards to the inner cavity of the first L-shaped bent pipe 11, the materials are injected into the material inlet pipe 7, then the materials enter the second L-shaped bent pipe 12 through the material conveying pipe 9 and finally enter the inner cavity of the evaporation tank 1, a large space is arranged between the first L-shaped bent pipe 11 and the second L-shaped bent pipe 12, the heat conveyed in the inner cavity of the first tank body 6 can circulate in the space, and the temperature of the conveyed materials can be more comprehensively maintained under the matching action of the heat insulation cotton 13, start driving motor 15, driving motor 15's output shaft drives dwang 17 and rotates, and helical blade 18 on the dwang 17 outer wall is at rotatory in-process, and the solution with 1 bottom position of evaporating pot that can relapse upwards promotes, and U type frame 19 rotates in 1 inner chamber of evaporating pot, and scraper blade 20 in the U type frame 19 outside rotates on 1 inner wall of evaporating pot, can strike off adnexed material on 1 inner wall of evaporating pot.

The above embodiments are preferred embodiments of the present invention, and those skilled in the art can make variations and modifications to the above embodiments, therefore, the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (5)

1. Production zinc sulfate monohydrate's concentrated crystallization device, including evaporating pot (1), its characterized in that, evaporating pot (1) left side is connected with observation hole (2), evaporating pot (1) top through connection has unloading pipe (3), unloading pipe (3) top is connected with defeated material protecting tube (4), defeated material protecting tube (4) right-hand member fixedly connected with heat treatment tank (5), heat treatment tank (5) are including first jar of body (6), inlet pipe (7) set up with first jar of body (6) top side, first jar of body (6) inner wall top is equipped with heating coil (8) with below equidistance respectively, first jar of body (6) inner chamber is stretched into to first jar of body (7) bottom, and fixedly connected with inlet pipe (9).

2. The apparatus for concentrating and crystallizing zinc sulfate monohydrate as claimed in claim 1, wherein: first jar of body (6) right side link up and is provided with fan (10), defeated material protective tube (4) include first L type return bend (11), second L type return bend (12) set up with first L type return bend (11) inner chamber, first L type return bend (11) run through first jar of body (6) inner chamber, the position and first L type return bend (11) right-hand member position of fan (10) correspond.

3. The apparatus for concentrating and crystallizing zinc sulfate monohydrate as claimed in claim 2, wherein: second L type return bend (12) right-hand member link up fixed connection with conveying pipeline (9), fixedly connected with keeps warm cotton (13) on first L type return bend (11) inner wall, second L type return bend (12) bottom cup joints and is fixed with sealing ring (14), the aperture size of sealing ring (14) equals with the aperture size of second L type return bend (12), sealing ring (14) top side and first L type return bend (11) bottom fixed connection, and the bottom link up fixed connection with unloading pipe (3).

4. The apparatus for concentrating and crystallizing zinc sulfate monohydrate as claimed in claim 1, wherein: evaporating pot (1) bottom fixedly connected with driving motor (15), evaporating pot (1) bottom left side link up and is equipped with discharging pipe (16), the output shaft of driving motor (15) stretches into evaporating pot (1) inner chamber, and fixedly connected with dwang (17), be equipped with helical blade (18) on dwang (17) outer wall.

5. The apparatus for concentrating and crystallizing zinc sulfate monohydrate as claimed in claim 4, wherein: dwang (17) left and right sides symmetry is equipped with U type frame (19), helical blade (18) set up in U type frame (19) inboard, fixedly connected with scraper blade (20) on U type frame (19) outer wall, the laminating of scraper blade (20) outside and evaporating pot (1) inner wall.

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