CN112774243A - Mother liquor circulating type continuous crystallizer - Google Patents

Abstract

The invention discloses a mother liquid circulating type continuous crystallizer which comprises a crystallizing device, a driving device, a heat exchange device and a reflux device, wherein the crystallizing device comprises a crystallizing main body, a circulating reflux cylinder and a rotating motor, the upper end of the crystallizing main body is connected with a steam main body, the circulating reflux cylinder is fixedly connected inside the steam main body, and one end of the circulating reflux cylinder is fixedly connected with a wide-mouth skirt body. The circulating reflux cylinder has the advantages that one end of the circulating reflux cylinder is connected with the wide-mouth skirt body, the flow rate of fluid feeding of the circulating reflux cylinder is reduced by the wide-mouth skirt body with the diameter twice, the phenomenon that larger particles are formed by the driving of fluid with larger flow rate circularly flows is avoided, the bottom deposition of the larger particles is facilitated, meanwhile, the edge accumulation of the larger particles is facilitated by the outer wall of the wide-mouth skirt body with the horizontal plane included angle of forty-five degrees, meanwhile, the rotating ring rotates to drive the plurality of stirring sheets at the bottom to stir the particles deposited at the bottom to the discharging pipe, and the discharging is facilitated.

Description

Mother liquor circulating type continuous crystallizer

Technical Field

The invention belongs to the technical field of crystallizers, and particularly relates to a mother liquor circulating type continuous crystallizer.

Background

The continuous crystallizer refers to a device capable of realizing continuous crystallization production compared with the conventional single-pot batch crystallization. Evaporative crystallization also belongs to the category of continuous crystallization, but generally refers to cooling crystallization or reaction crystallization equipment, namely a crystallization device capable of realizing continuous feeding, continuous discharging and continuous filtration, crystallization is a common and basic chemical process, and the production results of many chemical products are finally embodied in the form of crystal particles. The generation mode of the crystal is different according to the physical properties of different products, and cooling crystallization, evaporative crystallization and reaction crystallization are common. Different from a single-pot intermittent crystallization mode, the continuous crystallizer realizes the continuous operation process of continuously adding materials to be crystallized and continuously taking out crystallizer products from the crystallizer, and feeding and discharging are simultaneously carried out. Large-particle crystals at the bottom of the conventional continuous crystallizer cannot be quickly concentrated, and partial large particles are easily mixed with upper-layer liquid to be dissolved in the continuous production process, so that the production efficiency is reduced.

Disclosure of Invention

The invention aims to provide a mother liquor circulating type continuous crystallizer to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a mother liquid circulating type continuous crystallizer comprises a crystallizing device, a driving device, a heat exchange device and a reflux device, wherein the crystallizing device comprises a crystallizing main body, a circulating reflux cylinder and a rotating motor, the upper end of the crystallizing main body is connected with a steam main body, the inside of the steam main body is fixedly connected with the circulating reflux cylinder, one end of the circulating reflux cylinder is fixedly connected with a wide-mouth skirt body, the upper end of the steam main body is fixedly connected with the rotating motor, the output end of the rotating motor is connected with a rotating rod, the rotating rod is connected in the circulating reflux cylinder in a penetrating manner, a plurality of groups of circulating fan blades are connected on the rotating rod, the upper end inside of the steam main body is connected with a demister, the upper end of the steam main body is connected with a vacuum tube, the middle position of the steam main body is connected with a reflux tube, one side of the middle part of the feeding pipe is connected with a raw material pipe;

the driving device comprises a driving cavity, the driving cavity is arranged on the return pipe, the upper end face of the driving cavity is fixedly connected with a driving motor, the output end of the driving motor is connected with a driving shaft, a supporting rod is fixedly connected inside the driving cavity, the supporting rod is movably clamped with a rotating fan blade, and one end of the rotating fan blade is meshed with the driving shaft;

the heat exchange device comprises a heat exchange main body, one end of the heat exchange main body is connected with one end of a return pipe, the other end of the heat exchange main body is connected with a hot return pipe, and one side of the heat exchange main body is connected with a steam pipe and a condensing pipe;

the backflow device comprises a bottom plate and a backflow main body, the backflow main body is fixed to the upper end of the bottom plate, a liquid inlet end of the backflow main body is connected with a hot return pipe, a liquid outlet end of the backflow main body is connected with a feeding pipe, and the backflow main body is connected with an axial-flow pump.

Preferably, the diameter of the opening of the wide-mouth skirt body is twice the diameter of the circulation reflux cylinder body, and the included angle between the outer wall of the wide-mouth skirt body and the horizontal plane is forty-five degrees.

Preferably, the inside fixedly connected with joint ring of crystallization main part, the inside joint of joint ring is connected with the rotating ring, a plurality of stirring pieces of rotating ring bottom fixedly connected with, the upper end fixedly connected with king-rod of rotating ring, the inside fixedly connected with speed reduction casing of crystallization main part, speed reduction casing internal connection has the gear shaft, the one end gear engagement gear shaft one end of rotary rod, the other end gear engagement drive wheel of gear shaft, the drive wheel gear engagement king-rod.

Preferably, the plurality of the poking pieces are uniformly distributed on the rotating ring, and the poking pieces are arranged in an arc shape.

Preferably, the diameter of the gear at the meshing end of the gear rotating shaft and the rotating rod is larger than that of the gear at the meshing end of the gear rotating shaft and the driving wheel, and the diameter of the rotating rod meshing gear is larger than that of the middle rod meshing gear.

Preferably, the inside of drive cavity sets up and rotating fan blade assorted mounting groove, rotating fan blade's both ends all are connected with the bracing piece, rotating fan blade's axis and back flow axis coincidence.

Preferably, the bottom of the axial flow pump is connected with a base, and the backflow main body and the axial flow pump are arranged on the same axis.

Preferably, the two sides of the crystallization main body are fixedly connected with symmetrical hangers.

Compared with the prior art, the invention has the beneficial effects that:

(1) the utility model discloses a circulation backward flow barrel, including the wide-mouth skirt body, the circulation backward flow barrel fluid feeding is reduced to the wide-mouth skirt body of twice diameter, avoid great velocity of flow fluid to drive the circulation flow in order to take shape great granule, do benefit to the bottom deposit of great granule, the edge of the wide-mouth skirt body outer wall of horizontal angle forty-five degree great shaping granule of being convenient for is piled up simultaneously, the swivel becket rotates simultaneously, a plurality of stirring pieces that drive the bottom carry out the bottom sedimentary granule and stir toward the discharging pipe, the ejection of compact of being convenient for.

(2) The rotary fan blade is connected with a drive cavity on the return pipe, the rotary fan blade inside the drive cavity rotates to push the internal return fluid to flow, power input is carried out on the internal fluid of the return pipe, the problem that the viscosity of the return fluid is greatly reduced is solved, supporting rods at two ends of the rotary fan blade stably clamp the rotary fan blade, the rotary fan blade rotates stably, stable energy input of the rotary fan blade and the return pipe axis coincide to facilitate fluid is solved, extra resistance of the rotary fan blade to the entering fluid is avoided, and fluid flowing is facilitated.

(3) The inside fixed speed reduction casing of crystallization main part, the speed reduction casing is to the gear shaft of inside, drive wheel and well pole are protected, avoid sedimentary granule to get into, the inside gear shaft of speed reduction casing and the drive wheel transmission that carries out rotary rod and well pole simultaneously, the rotary rod drives the whole rotation of swivel becket, reduce the rotational speed that the well pole drove the swivel becket through multistage speed reduction, avoid well pole rotational speed too fast, avoid driving the granule of deposit bottom.

Drawings

FIG. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic bottom view of the present invention;

FIG. 3 is a schematic front view of the present invention;

FIG. 4 is a schematic view of the internal structure of the crystalline body of the present invention;

FIG. 5 is an enlarged view taken at A in FIG. 4 according to the present invention;

fig. 6 is a schematic view of the internal structure of the driving chamber according to the present invention.

In the figure: 1. a crystallization device; 101. a crystalline body; 102. a main body of steam; 103. circulating and refluxing the cylinder; 104. a wide-mouth skirt body; 105. a rotating electric machine; 106. rotating the rod; 107. circulating fan blades; 108. a demister; 109. a vacuum tube; 110. a return pipe; 111. a feed pipe; 112. a snap ring; 113. a rotating ring; 114. a toggle sheet; 115. a reduction housing; 116. a gear shaft; 117. a driving wheel; 118. a middle rod; 119. a discharge pipe; 120. a raw material pipe; 2. a drive device; 21. a drive cavity; 22. a drive motor; 23. a drive shaft; 24. a support bar; 25. rotating the fan blades; 3. a heat exchange device; 31. a heat exchange body; 32. a steam pipe; 33. a condenser tube; 34. a hot return pipe; 4. a reflux device; 41. a base plate; 42. a reflow body; 43. an axial flow 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, the present invention provides a mother liquor circulating type continuous crystallizer, which comprises a crystallization device 1, a driving device 2, a heat exchange device 3 and a reflux device 4, wherein the crystallization device 1 comprises a crystallization main body 101, a circulation reflux cylinder 103 and a rotating motor 105, the upper end of the crystallization main body 101 is connected with a steam main body 102, the inside of the steam main body 102 is fixedly connected with the circulation reflux cylinder 103, one end of the circulation reflux cylinder 103 is fixedly connected with a wide-mouth skirt 104, the upper end of the steam main body 102 is fixedly connected with the rotating motor 105, the output end of the rotating motor 105 is connected with a rotating rod 106, the rotating rod 106 is penetratingly connected in the circulation reflux cylinder 103, the rotating rod 106 is connected with a plurality of groups of circulation fan blades 107, the upper end of the inside of the steam main body 102 is connected with a demister 108, the upper end of the, one side of the crystallization device 1 is connected with a feeding pipe 111, the bottom end of the crystallization main body 101 is connected with a discharging pipe 119, and one side of the middle part of the feeding pipe 111 is connected with a raw material pipe 120;

the driving device 2 comprises a driving cavity 21, the driving cavity 21 is arranged on the return pipe 110, the upper end surface of the driving cavity 21 is fixedly connected with a driving motor 22, the output end of the driving motor 22 is connected with a driving shaft 23, a supporting rod 24 is fixedly connected inside the driving cavity 21, the supporting rod 24 is movably clamped with a rotating fan blade 25, and one end of the rotating fan blade 25 is meshed with the driving shaft 23;

the heat exchange device 3 comprises a heat exchange body 31, one end of the heat exchange body 31 is connected with one end of a return pipe 110, the other end of the heat exchange body 31 is connected with a hot return pipe 34, and one side of the heat exchange body 31 is connected with a steam pipe 32 and a condensation pipe 33;

the reflux device 4 comprises a bottom plate 41 and a reflux main body 42, the reflux main body 42 is fixed at the upper end of the bottom plate 41, the liquid inlet end of the reflux main body 42 is connected with the hot return pipe 34, the liquid outlet end of the reflux main body 42 is connected with the feeding pipe 111, and the reflux main body 42 is connected with the axial-flow pump 43.

In this embodiment, further, the diameter of the opening of the wide-mouth skirt body 104 is twice the diameter of the circulation reflux cylinder body 103, and the included angle between the outer wall of the wide-mouth skirt body 104 and the horizontal plane is forty-five degrees;

the wide-mouth skirt body 104 through the twice diameter reduces the velocity of flow of circulation backward flow barrel 103 fluid feeding, avoids great velocity of flow fluid to drive the circulation flow in order to take shape great granule, does benefit to the bottom deposit of great granule, and the edge of the wide-mouth skirt body 104 outer wall of horizontal angle forty-five degree is convenient for great shaping granule is piled up simultaneously, avoids driving the entering circulation through the disturbance fluid.

In this embodiment, further, a clamping ring 112 is fixedly connected inside the crystallization main body 101, a rotating ring 113 is fixedly connected inside the clamping ring 112 in a clamping manner, a plurality of toggle pieces 114 are fixedly connected to the bottom of the rotating ring 113, a middle rod 118 is fixedly connected to the upper end of the rotating ring 113, a reduction casing 115 is fixedly connected inside the crystallization main body 101, a gear rotating shaft 116 is connected inside the reduction casing 115, one end of the rotating rod 106 is in gear engagement with one end of the gear rotating shaft 116, the other end of the gear rotating shaft 116 is in gear engagement with a transmission wheel 117, and the transmission wheel 117 is in gear engagement with the middle rod 118;

carry on spacingly through joint ring 112 to the rotating ring 113 that the joint is connected, rotating ring 113 rotates, a plurality of plectrum 114 that drive the bottom carry out the sedimentary granule in bottom and stir towards discharging pipe 119, the ejection of compact of being convenient for, speed reduction casing 115 is to inside gear shaft 116, drive wheel 117 and well pole 118 protect, avoid sedimentary granule to get into, gear shaft 116 and drive wheel 117 inside speed reduction casing 115 carry out the transmission of rotary rod 106 and well pole 118 simultaneously, rotary rod 106 drives the whole rotation of rotating ring 113.

In this embodiment, further, the plurality of toggle pieces 114 are uniformly distributed on the rotating ring 113, and the toggle pieces 114 are arranged in an arc shape;

the bottom gathering of piling up the granule is carried out through a plurality of evenly distributed's stirring piece 114 bottom and is stirred, and the middle part of the granule of being convenient for is concentrated, avoids the granule at the edge gathering of crystallization main part 101, and the ejection of compact is rapid and stable.

In this embodiment, further, the diameter of the gear at the meshing end of the gear rotating shaft 116 and the rotating rod 106 is larger than that of the gear at the meshing end of the gear rotating shaft 116 and the driving wheel 117, and the diameter of the meshing gear of the rotating rod 106 is larger than that of the meshing gear of the middle rod 118;

carry out the transmission through the gear of the different diameters in gear shaft 116 both ends and slow down, cooperate the meshing gear that the rotary rod 106 diameter is big simultaneously and the further speed reduction of well pole 118 minor diameter meshing gear cooperation, through the rotational speed that pole 118 drove swivel 113 in the multistage speed reduction, avoid well pole 118 rotational speed too fast, avoid driving the granule of deposit bottom.

In this embodiment, further, a mounting groove matched with the rotating fan blade 25 is arranged inside the driving cavity 21, the two ends of the rotating fan blade 25 are both connected with the supporting rods 24, and the axis of the rotating fan blade 25 coincides with the axis of the return pipe 110;

the internal backflow fluid is pushed to flow by rotating the rotating fan blades 25 in the driving cavity 21, power is input to the fluid in the backflow pipe 110, the situation that the viscosity of the backflow fluid is large and the flow rate is reduced is avoided, the supporting rods 24 at two ends of the rotating fan blades 25 are stably clamped to the backflow fluid, the rotating fan blades 25 rotate stably, the axes of the rotating fan blades 25 and the axes of the backflow pipe 110 are overlapped, stable energy input of the fluid is facilitated, extra resistance of the blades of the rotating fan blades 25 to the entering fluid is avoided, and the fluid flow is facilitated.

In this embodiment, further, the bottom of the axial flow pump 43 is connected with a base, and the backflow main body 42 and the axial flow pump 43 are arranged on the same axis;

the axial flow pump 43 and the backflow main body 42 are on the same axis by supporting and connecting the base at the bottom of the axial flow pump 43, so that power can be conveniently input.

In this embodiment, further, two sides of the crystallization main body 101 are fixedly connected with symmetrical hangers; the symmetrical hangers on the two sides of the crystallization main body 101 facilitate the fixed connection of the two sides, and the connection is convenient.

The working principle and the using process of the invention are as follows: when the device is used, a power component is started, the principle is injected through a raw material pipe 120, raw materials are injected into a crystallization main body 101, the raw materials are driven to rotate through a rotating motor 105 in the crystallization main body 101, then a circulating fan blade 107 is driven to rotate, fluid is driven to perform internal circulating flow through the circulating fan blade 107, the fluid on the upper portion flows back to the inside of a heat exchange main body 31 through a return pipe 110, the return pipe 110 is connected with a driving device 2, the internal circulating fluid is driven to flow through rotation of a rotating fan blade 25 in a driving cavity 21, power input is performed on the fluid in the return pipe 110, the situation that the viscosity of the returning fluid is greatly reduced is avoided, support rods 24 at two ends of the rotating fan blade 25 are stably clamped on the rotating fan blade 25, the rotating fan blade 25 rotates stably, the axis of the rotating fan blade 25 is overlapped with the axis, the fluid flow is facilitated, the heat exchange main body 31 enters hot steam through the steam pipe 32, the raw material is heated through the heat exchange of the heat exchange main body 31, the heated fluid is introduced into the backflow main body 42 through the hot return pipe 34, the backflow main body 42 inputs power through the axial flow pump 43, the heated fluid is introduced into the crystallization main body 101 through the feeding pipe 111 by the backflow main body 42, the vacuum pipe 109 at the upper end of the crystallization main body 101 is vacuumized, after the internal pressure of the crystallization main body 101 is reduced, the fluid boils and evaporates, the internal fluid concentration is increased, crystals are generated inside the fluid, larger crystal particles are deposited at the bottom, the circulating backflow cylinder 103 at one end of the circulating backflow cylinder 103 reduces the flow rate of the fluid feeding, the circulating flow of the larger flow rate fluid driven to form the larger particles is avoided, the larger particle bottom deposition is facilitated, meanwhile, the rotating ring 113 rotates to drive the plurality of bottom stirring sheets, the ejection of compact of being convenient for, speed reduction casing 115 is to inside gear shaft 116, drive wheel 117 and well pole 118 protect, avoid sedimentary granule to get into, speed reduction casing 115 inside gear shaft 116 and drive wheel 117 carry out the transmission of rotary rod 106 and well pole 118 simultaneously, rotary rod 106 drives the whole rotation of rotating ring 113, avoid the edge gathering of granule at crystallization main part 101, the ejection of compact is fast and stable, great granule crystallization is exported through discharging pipe 119, the leading-in raw materials in succession of raw material pipe 120, carry out continuous material crystallization.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. The utility model provides a continuous crystallizer of mother liquor circulating, includes crystallization device (1), drive arrangement (2), heat transfer device (3) and reflux unit (4), its characterized in that: the crystallization device (1) comprises a crystallization main body (101), a circulation reflux cylinder body (103) and a rotating motor (105), wherein the upper end of the crystallization main body (101) is connected with a steam main body (102), the inside of the steam main body (102) is fixedly connected with the circulation reflux cylinder body (103), one end of the circulation reflux cylinder body (103) is fixedly connected with a wide-mouth skirt body (104), the upper end of the steam main body (102) is fixedly connected with the rotating motor (105), the output end of the rotating motor (105) is connected with a rotating rod (106), the rotating rod (106) is connected in the circulation reflux cylinder body (103) in a penetrating way, the rotating rod (106) is connected with a plurality of groups of circulation fan blades (107), the inside upper end of the steam main body (102) is connected with a foam remover (108), the upper end of the steam main body (102) is connected with a vacuum tube (109), and the middle, one side of the crystallization device (1) is connected with a feeding pipe (111), the bottom end of the crystallization main body (101) is connected with a discharging pipe (119), and one side of the middle part of the feeding pipe (111) is connected with a raw material pipe (120);

the driving device (2) comprises a driving cavity (21), the driving cavity (21) is arranged on the return pipe (110), the upper end face of the driving cavity (21) is fixedly connected with a driving motor (22), the output end of the driving motor (22) is connected with a driving shaft (23), a supporting rod (24) is fixedly connected inside the driving cavity (21), the supporting rod (24) is movably clamped with a rotating fan blade (25), and one end of the rotating fan blade (25) is meshed with the driving shaft (23);

the heat exchange device (3) comprises a heat exchange main body (31), one end of the heat exchange main body (31) is connected with one end of a return pipe (110), the other end of the heat exchange main body (31) is connected with a hot return pipe (34), and one side of the heat exchange main body (31) is connected with a steam pipe (32) and a condensation pipe (33);

reflux unit (4) include bottom plate (41) and backward flow main part (42), backward flow main part (42) are fixed in bottom plate (41) upper end, hot return pipe (34) are connected to backward flow main part (42) feed liquor end, backward flow main part (42) play liquid end connection inlet pipe (111), axial-flow pump (43) is connected in backward flow main part (42).

2. The mother liquor circulating type continuous crystallizer of claim 1, wherein: the diameter of the opening of the wide-mouth skirt body (104) is twice the diameter of the circulating reflux cylinder body (103), and the included angle between the outer wall of the wide-mouth skirt body (104) and the horizontal plane is forty-five degrees.

3. The mother liquor circulating type continuous crystallizer of claim 1, wherein: the inside fixedly connected with joint ring (112) of crystallization main part (101), the inside joint of joint ring (112) is connected with and rotates ring (113), a plurality of stirring pieces (114) of rotation ring (113) bottom fixedly connected with, upper end fixedly connected with king-rod (118) of rotation ring (113), crystallization main part (101) inside fixedly connected with speed reduction casing (115), speed reduction casing (115) internal connection has gear shaft (116), one end gear engagement gear shaft (116) one end of rotary rod (106), other end gear engagement drive wheel (117) of gear shaft (116), drive wheel (117) gear engagement king-rod (118).

4. The mother liquor circulating type continuous crystallizer of claim 3, wherein: the plurality of the poking sheets (114) are uniformly distributed on the rotating ring (113), and the poking sheets (114) are arranged in an arc shape.

5. The mother liquor circulating type continuous crystallizer of claim 3, wherein: the diameter of the gear at the meshing end of the gear rotating shaft (116) and the rotating rod (106) is larger than that of the gear at the meshing end of the gear rotating shaft (116) and the driving wheel (117), and the diameter of the meshing gear of the rotating rod (106) is larger than that of the meshing gear of the middle rod (118).

6. The mother liquor circulating type continuous crystallizer of claim 1, wherein: the inside setting of drive cavity (21) and rotating fan blade (25) assorted mounting groove, rotating fan blade's (25) both ends all are connected with bracing piece (24), rotating fan blade's (25) axis and back flow (110) axis coincidence.

7. The mother liquor circulating type continuous crystallizer of claim 1, wherein: the bottom of the axial flow pump (43) is connected with a base, and the backflow main body (42) and the axial flow pump (43) are arranged on the same axis.

8. The mother liquor circulating type continuous crystallizer of claim 1, wherein: and the two sides of the crystallization main body (101) are fixedly connected with symmetrical hangers.

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