CN218306257U

CN218306257U - Continuous recrystallization device for large-particle boric acid

Info

Publication number: CN218306257U
Application number: CN202221508396.7U
Authority: CN
Inventors: 张晓林; 肖启发; 李金荣
Original assignee: Foshan Xilong Chemical Co ltd
Current assignee: Foshan Xilong Chemical Co ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2023-01-17
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a towards large granule boric acid with continuous recrystallization device, including the recrystallization cauldron, the surface spiral shell of recrystallization cauldron is equipped with the spiral cooling tube, the surface parcel of spiral cooling tube presss from both sides the cover, it is at the surface of recrystallization cauldron to press from both sides the fixed suit of cover, the fixed surface that is connected with the support frame that presss from both sides the cover, the up end middle part of recrystallization cauldron is fixed to be inlayed and is equipped with first rotary joint, the bottom face middle part of recrystallization cauldron is fixed to be inlayed and is equipped with the second rotary joint, it is connected with the cooling rotating tube to rotate between first rotary joint and the second rotary joint, and this device cools off the filtrate through inside and outside dual refrigerated mode, effectively improves cooling crystallization efficiency, and starter motor when the cooling, and the motor drives the cooling rotating tube and rotates with a plurality of first stirring board, and then can make the filtrate evenly cooled, improves the cooling crystal and appear the process.

Description

Continuous recrystallization device for large-particle boric acid

Technical Field

The utility model relates to a crystallization device technical field specifically is towards large granule continuous recrystallization device for boric acid.

Background

Boric acid is an important inorganic chemical raw material, is widely applied to the fields of glass fibers, ceramics, medical industry, flame retardants, metallurgy, leather, antirust agents, adhesives, nuclear industry, chemical industry and the like, and plays an important role in national economy. Most of domestic boric acid products are powdery crystals, have no obvious form and serious agglomeration, and the purity, the form, the grade and other indexes of the imported boric acid are far higher than those of the domestic products. The high-purity boric acid is used as a high-purity reagent and used for producing various high-purity borate crystals, is widely applied in the high-tech field, wherein nuclear grade boric acid is mostly used as a thermal neutron moderator, an absorbent and a coolant instead of isotope 10B in the nuclear industry, and the consumption is extremely large, so that the high-purity boric acid is indispensable to a safety and control system of a nuclear power station.

Recrystallization is a basic, common and important solid separation and purification technology in organic synthesis, and can remove insoluble impurities and soluble impurities in solids through recrystallization and remove colored impurities through decolorization of activated carbon. In the traditional recrystallization method, three steps of preparation of saturated solution, decolorization by active carbon and heat filtration are respectively carried out in three devices: the recrystallized solid and the solvent are filled in a round-bottom flask, a reflux condensing device is arranged, and the mixture is heated and dissolved. After the recrystallized solid is dissolved, stopping heating, cooling the solution, adding a small amount of activated carbon, stirring, and heating and boiling for a period of time. And cooling the filtrate, filtering under reduced pressure, washing crystals, and finally drying to obtain pure recrystallized solids, wherein the cooling time is longer and the occupied time is longer in the filtrate cooling process.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a continuous recrystallization device is used to large granule boric acid to solve the problem of proposing among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the continuous recrystallization device for large-particle boric acid comprises a recrystallization kettle, wherein a spiral cooling pipe is arranged on the outer surface of the recrystallization kettle in a spiral sleeve mode, a jacket is wrapped on the outer surface of the spiral cooling pipe, the jacket is fixedly sleeved on the outer surface of the recrystallization kettle, a supporting frame is fixedly connected to the outer surface of the jacket, a first rotary joint is fixedly embedded in the middle of the upper end surface of the recrystallization kettle, a second rotary joint is fixedly embedded in the middle of the bottom end surface of the recrystallization kettle, a cooling rotating pipe is rotatably connected between the first rotary joint and the second rotary joint, a cooling liquid inlet pipe is fixedly connected to the top end of the first rotary joint, a communicating pipe is fixedly connected to the bottom end of the second rotary joint, the free end of the communicating pipe is fixedly communicated with one end of the spiral cooling pipe, a cooling liquid outlet pipe is fixedly connected to the other end of the spiral cooling pipe, a driven sprocket is fixedly sleeved on the outer surface of the cooling rotating pipe, a motor is fixedly installed on the upper end surface of the recrystallization kettle, a driving sprocket is fixedly connected to the output end of the motor, a chain is connected to the driving sprocket and a chain is connected to the outer surface of the cooling pipe fixedly connected with a plurality of first movable plates, a left stirring plate of the recrystallization kettle, and a feeding pipe is fixedly penetrated by the feeding pipe.

Preferably, the fixed cover of interior top lateral wall fixedly connected with of recrystallization cauldron, the cooling rotating tube rotates and wears to establish on fixed cover, the inlet pipe is fixed to be worn to establish on fixed cover.

Preferably, the outer surface of the motor is fixedly connected with a plurality of radiating fins.

Preferably, the bottom of the support frame is provided with a non-slip mat.

Preferably, the cooling liquid inlet pipe is provided with a liquid filter, and a filter screen is arranged in the liquid filter.

Preferably, the outer surface of the cooling rotating pipe is fixedly connected with a supporting plate, the bottom end face of the fixed cover is rotated and embedded with a rotating ring plate, a rotating rod penetrates through the upper end face of the rotating ring plate in a rotating mode, the bottom end of the rotating rod is rotatably connected with the upper end face of the supporting plate, the top end of the rotating rod is fixedly connected with a gear, the inner wall of the fixed cover is fixedly connected with an annular rack, and the outer surface of the rotating rod is connected with a plurality of second stirring plates.

Compared with the prior art, the beneficial effects of the utility model are that: the crystallization device is convenient to use and simple in structure, filtrate is cooled by an internal and external dual cooling mode, the cooling crystallization efficiency is effectively improved, the motor is started during cooling, the motor drives the cooling rotating pipe to rotate with the first stirring plates, so that the filtrate can be uniformly cooled, the cooling crystal precipitation process is improved, the rotating rod is driven to revolve when the cooling rotating pipe rotates, and the gear is meshed with the annular rack, so that the rotation can be realized during the revolution of the rotating rod, and the cooling effect can be improved; the cooling liquid entering the liquid filter can be filtered through the filter screen in the liquid filter, and the pipeline is prevented from being blocked by impurities in the filtering liquid.

Drawings

FIG. 1 is a schematic sectional view in elevation of a main body structure of a continuous recrystallization apparatus for large-particle boric acid;

FIG. 2 is a schematic sectional top view of a structure of a fixing cap facing a continuous recrystallization apparatus for large-particle boric acid.

In the figure: 1-support frame, 2-discharge pipe, 3-second rotary joint, 4-recrystallization kettle, 5-rotating ring plate, 6-fixed cover, 7-cooling liquid outlet pipe, 8-annular rack, 9-feed pipe, 10-first rotary joint, 11-cooling liquid inlet pipe, 12-motor, 13-fixed cover, 14-spiral cooling pipe, 15-jacket, 16-rotating rod, 17-second stirring plate, 18-first stirring plate, 19-cooling rotating pipe, 20-support plate, 21-gear and 22-chain.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1: referring to fig. 1-2, the continuous recrystallization device for large-particle boric acid includes a recrystallization vessel 4, a spiral cooling pipe 14 is spirally sleeved on the outer surface of the recrystallization vessel 4, a jacket 15 is wrapped on the outer surface of the spiral cooling pipe 14, the jacket 15 is fixedly sleeved on the outer surface of the recrystallization vessel 4, a support frame 1 is fixedly connected to the outer surface of the jacket 15, a first rotary joint 10 is fixedly embedded in the middle of the upper end surface of the recrystallization vessel 4, a second rotary joint 3 is fixedly embedded in the middle of the lower end surface of the recrystallization vessel 4, a cooling rotary pipe 19 is rotatably connected between the first rotary joint 10 and the second rotary joint 3, a cooling liquid inlet pipe 11 is fixedly connected to the top end of the first rotary joint 10, a communicating pipe is fixedly connected to the lower end of the second rotary joint 3, the free end of the communicating pipe is fixedly communicated with one end of the spiral cooling pipe 14, the other end of the spiral cooling liquid outlet pipe 7 is fixedly connected to the other end of the spiral cooling pipe 14, a driven sprocket is fixedly sleeved on the outer surface of the cooling rotary pipe 19, a motor 12 is fixedly installed on the upper end surface of the recrystallization vessel 4, an output end of the motor 12 is fixedly connected to a driving sprocket, a discharge pipe 22 is fixedly connected to the left side of the driving sprocket, and a driving sprocket 18 is connected to the left side of the recrystallization vessel 4, and a recrystallization vessel 2 is connected to a recrystallization vessel.

During the use, wait that the filtrate of cooling crystallization drops into the inside of recrystallization cauldron 4 through inlet pipe 9, the coolant liquid enters the inside that pipe 11 entered cooling rotating tube 19 through the coolant liquid this moment, the coolant liquid that flows in cooling rotating tube 19 inside can cool off recrystallization cauldron 4 inside, later the coolant liquid enters into spiral cooling tube 14 through communicating pipe, the coolant liquid that flows in spiral cooling tube 14 inside can cool off recrystallization cauldron 4 outside, and then cool off the filtrate through inside and outside dual refrigerated mode, effectively improve cooling crystallization efficiency, and starter motor 12 when the cooling, motor 12 drives cooling rotating tube 19 and stirs 18 with a plurality of first movable plates and rotates, and then can make the filtrate evenly catch cold, improve the cooling crystal and appear the process.

Wherein, the fixed cover 13 of interior top lateral wall fixedly connected with of recrystallization kettle 4, cooling rotating tube 19 rotates and wears to establish on fixed cover 13, inlet pipe 9 is fixed to wear to establish on fixed cover 13.

The fixed cover 13 is provided to prevent the crystal from falling onto the driving sprocket or the driven sprocket.

The outer surface of the motor 12 is fixedly connected with a plurality of radiating fins, and the arranged radiating fins can improve the radiating efficiency of the motor 12.

Wherein, the bottom of the support frame 1 is provided with a non-slip mat.

Wherein, the cooling liquid inlet pipe 11 is provided with a liquid filter, and the inside of the liquid filter is provided with a filter screen.

The filter screen inside the liquid filter can filter the entering cooling liquid, and the impurities in the filtering liquid are prevented from blocking the pipeline.

Example 2: referring to fig. 1 to 2, the continuous recrystallization apparatus for large granular boric acid is different from that of embodiment 1 in that a support plate 20 is fixedly connected to an outer surface of a cooling rotary pipe 19, a rotary ring plate 5 is rotatably embedded in a bottom end surface of a fixed cover 13, a rotary rod 16 is rotatably inserted in an upper end surface of the rotary ring plate 5, a bottom end of the rotary rod 16 is rotatably connected to an upper end surface of the support plate 20, a gear 21 is fixedly connected to a top end of the rotary rod 16, an annular rack 8 is fixedly connected to an inner wall of the fixed cover 13, and a plurality of second stirring plates 17 are connected to an outer surface of the rotary rod 16.

When the cooling rotary pipe 19 rotates, the rotary rod 16 is driven to revolve, and when the rotary rod 16 revolves, the rotary ring plate 5 is pulled to rotate, and at the moment, because the gear 21 is meshed with the annular rack 8, the rotary rod 16 can rotate during revolution, and the cooling effect can be improved.

The utility model discloses a theory of operation is: when the device is used, a filtrate to be cooled and crystallized is thrown into the interior of the recrystallization kettle 4 through the feeding pipe 9, at the moment, a cooling liquid enters the interior of the cooling rotary pipe 19 through the cooling liquid inlet pipe 11, the cooling liquid flowing in the interior of the cooling rotary pipe 19 can cool the interior of the recrystallization kettle 4, then the cooling liquid enters the spiral cooling pipe 14 through the communicating pipe, the cooling liquid flowing in the interior of the spiral cooling pipe 14 can cool the exterior of the recrystallization kettle 4, and then the filtrate is cooled in an internal and external double cooling mode, so that the cooling crystallization efficiency is effectively improved, in addition, the motor 12 is started during cooling, the motor 12 drives the cooling rotary pipe 19 to rotate with a plurality of first stirring plates 18, so that the filtrate can be uniformly cooled, the cooling crystal precipitation process is improved, the rotary rod 16 is driven to revolve when the cooling rotary pipe 19 rotates, the rotary rod 16 is pulled to rotate when the rotary rod 16 revolves, at the rotary ring plate 5 is pulled to rotate, at the moment, the revolution gear 21 is meshed with the annular rack 8, further, the autorotation can be generated when the rotary rod 16, and the cooling effect can be improved; the filter screen inside the liquid filter can filter the entering cooling liquid, and impurities in the filtering liquid are prevented from blocking the column pipeline.

In the present invention, the terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, and are only the terms determined for convenience of describing the structural relationship of each component or element of the present invention, and are not specific to any component or element of the present invention, and are not to be construed as limiting the present invention.

Claims

1. Towards large granule boric acid with continuous recrystallization device, including recrystallization cauldron (4), its characterized in that: the outer surface of the recrystallization kettle (4) is spirally sleeved with a spiral cooling pipe (14), the outer surface of the spiral cooling pipe (14) is wrapped with a jacket (15), the jacket (15) is fixedly sleeved on the outer surface of the recrystallization kettle (4), the outer surface of the jacket (15) is fixedly connected with a support frame (1), the middle part of the upper end surface of the recrystallization kettle (4) is fixedly embedded with a first rotary joint (10), the middle part of the lower end surface of the recrystallization kettle (4) is fixedly embedded with a second rotary joint (3), a cooling rotating pipe (19) is rotatably connected between the first rotary joint (10) and the second rotary joint (3), the top end of the first rotary joint (10) is fixedly connected with a cooling liquid inlet pipe (11), the bottom end of the second rotary joint (3) is fixedly connected with a communicating pipe, the free end of the communicating pipe is fixedly communicated with one end of the spiral cooling pipe (14), the other end of the spiral cooling pipe (14) is fixedly connected with a cooling liquid outlet pipe (7), the outer surface of the cooling rotating pipe (19) is fixedly sleeved with a driven sprocket, the upper surface of the recrystallization kettle (4) is provided with a fixed sprocket (12), a driving sprocket (12), and a driving motor (22) is connected with a driving sprocket (22), the feed pipe (9) is fixedly arranged on the left side of the upper end face of the recrystallization kettle (4) in a penetrating mode, and the discharge pipe (2) is fixedly connected to the bottom end face of the recrystallization kettle (4).

2. The continuous recrystallization apparatus for large-particle boric acid according to claim 1, wherein: the interior top lateral wall fixedly connected with fixed cover (13) of recrystallization kettle (4), cooling rotating tube (19) rotate and wear to establish on fixed cover (13), inlet pipe (9) are fixed to be worn to establish on fixed cover (13).

3. The continuous recrystallization apparatus for large-particle boric acid according to claim 2, wherein: the outer surface of the motor (12) is fixedly connected with a plurality of radiating fins.

4. The continuous recrystallization apparatus for large-particle boric acid according to claim 3, wherein: the bottom of the support frame (1) is provided with an anti-skid pad.

5. The continuous recrystallization apparatus for large-particle boric acid according to claim 4, wherein: and a liquid filter is arranged on the cooling liquid inlet pipe (11), and a filter screen is arranged in the liquid filter.

6. The continuous recrystallization apparatus for large-particle boric acid according to claim 5, wherein: the outer fixed surface of cooling rotating tube (19) is connected with backup pad (20), the bottom face of fixed cover (13) rotates and inlays and be equipped with rotating ring board (5), rotating rod (16) are worn to be equipped with in the up end rotation of rotating ring board (5), the bottom of rotating rod (16) rotates with the up end of backup pad (20) and is connected, the top fixedly connected with gear (21) of rotating rod (16), the inner wall fixedly connected with annular rack (8) of fixed cover (13), the surface of rotating rod (16) is connected with a plurality of second and stirs board (17).