CN219272322U

CN219272322U - Thickening device

Info

Publication number: CN219272322U
Application number: CN202320300441.8U
Authority: CN
Inventors: 邵昌哲; 陈跃飞; 黄胜; 喻文军
Original assignee: Changshu Longfei Medical Equipment Technology Co ltd
Current assignee: Changshu Longfei Medical Equipment Technology Co ltd
Priority date: 2023-02-23
Filing date: 2023-02-23
Publication date: 2023-06-30
Anticipated expiration: 2033-02-23

Abstract

The utility model discloses a thickener which comprises a barrel, wherein a cavity is formed in the barrel, a feed inlet and a solid-liquid discharge outlet which are communicated with the cavity are formed in the barrel, a filter screen is arranged in the cavity, a filtrate interlayer is arranged between the filter screen and the inner wall of the barrel, and a mother liquor discharge outlet which is communicated with the filtrate interlayer is formed in the barrel. Through being provided with the filtrate intermediate layer between the inner wall of filter screen and barrel, in the crystal mush gets into the cavity through the feed inlet, mother liquor in the crystal mush filters the filtrate intermediate layer through the filter screen, then the mother liquor flows out the thickener through the mother liquor discharge gate, continue the evaporation in the evaporation plant, because the mother liquor flows through the filter screen, it is not entrained a large amount of crystals in the crystal mush of messenger's stay in the cavity to rise to carry the crystal concentration in the mother liquor, improve the thickening effect, can solve current thickener mother liquor and carry a large amount of crystals, the problem such as thickening effect is not enough, and then guarantee the separation effect of solid-liquid separation equipment and the smooth operation of whole evaporation plant.

Description

Thickening device

Technical Field

The utility model relates to the technical field of chemical equipment, in particular to a thickener.

Background

The prior devices for MVR evaporation, single-effect evaporation, multi-effect evaporation and the like are applied to evaporation desalination conditions on a large scale, the solid content of salt crystallization in the evaporator cannot be higher than 10%, otherwise, the problems of pipeline and equipment blockage and the like are easy to cause equipment blockage, so that crystal slurry is required to be transferred to solid-liquid separation equipment at lower solid content, and mother liquor after solid-liquid separation is returned to the evaporation device again for continuous evaporation crystallization. For solid-liquid separation equipment such as a centrifugal machine, the solid content of 10% of crystallized salt is low, the solid-liquid separation is incomplete, and the separated salt content is high, so that the problem is solved by the thickener, the thickener is used for pre-separating evaporated crystal slurry, most of mother liquor is filtered out, the solid content of the crystal slurry is improved, and then the crystal slurry is sent into the centrifugal machine, so that the solid-liquid separation is more complete. The existing thickener is mainly in the form of an upper cylinder and a lower cone container structure, is provided with anchor type stirring, has huge volume, is easy to generate incomplete pre-separation, leads to a large amount of crystals entrained in mother liquor, or has insufficient thickening concentration and even no thickening effect, finally leads to poor separation effect of solid-liquid separation equipment such as a subsequent centrifuge and the like, even leads to the problems of unsmooth operation of the whole evaporation device and the like,

disclosure of Invention

In order to overcome the defects, the utility model aims to provide the thickener, which can solve the problems of large amount of crystals entrained in mother liquor, insufficient thickening effect and the like of the conventional thickener, thereby ensuring the separation effect of solid-liquid separation equipment and smooth operation of the whole set of evaporation device.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a thick ware, includes the barrel, be provided with the cavity in the barrel, be provided with on the barrel with feed inlet and the solid-liquid discharge gate of cavity intercommunication, be provided with the filter screen in the cavity, the filter screen with be provided with the filtrate intermediate layer between the inner wall of barrel, be provided with the mother liquor discharge gate with the filtrate intermediate layer intercommunication on the barrel. Through be provided with the filtrate intermediate layer between the filter screen with in the inner wall of barrel, the crystal mush gets into the cavity through the feed inlet in, the mother liquor in the crystal mush filters the filtrate intermediate layer through the filter screen, then the mother liquor flows out the thickener through the mother liquor discharge gate, continue evaporating in the evaporation plant, because the mother liquor flows out through the filter screen, do not carry a large amount of crystals in the mother liquor, the crystal concentration risees in the crystal mush that makes the stay in the cavity, improve the thickening effect, can solve current thickener mother liquor and carry a large amount of crystals, the problem such as thickening effect is not enough, and then guarantee the separation effect of solid-liquid separation equipment and the smooth operation of whole evaporation plant.

Further, the feeding hole is tangentially arranged with the side wall of the cylinder body connected with the feeding hole. Through the tangent setting of feed inlet and barrel lateral wall, the crystal mush after the feeding flows downwards along the section of thick bamboo wall rotation, and rotatory flow produces centrifugal force, is favorable to the mother liquor to filter the filtrate intermediate layer through the filter screen, improves the separation effect of mother liquor.

Further, the thickener also comprises a stirring device, the stirring device comprises a driving motor and a stirring shaft, the driving motor is arranged above the cylinder, one end of the stirring shaft is connected with the driving motor, and the other end of the stirring shaft penetrates through the cylinder and stretches into the cavity. In the process of rotation of the stirring shaft, crystal slurry in the cavity is driven to rotate, so that the centrifugal force of the crystal slurry is increased, and the separation effect of mother solution and the crystal slurry is improved.

Further, the stirring device further comprises a stirring spiral belt, the stirring spiral belt is a spiral blade, the stirring spiral belt is arranged in the cavity from top to bottom by taking the stirring shaft as a center, the inner side surface of the stirring spiral belt is fixedly connected with the stirring shaft, and the outer side surface of the stirring spiral belt is in butt joint with the filter screen. In the process of rotation of the stirring shaft, the stirring screw belt is driven to rotate, in the process of rotation of the stirring screw belt, crystals trapped on the surface of the filter screen are pushed to fall into a discharge hole at the bottom of the thickener and then discharged to solid-liquid separation equipment,

further, the barrel comprises a barrel cover, an upper barrel body and a lower barrel body, wherein the upper barrel body is a cylinder, the lower barrel body is a cone, the upper barrel body and the lower barrel body are integrally connected, and one end, far away from the lower barrel body, of the barrel cover is in sealing connection.

Further, the filtrate intermediate layer includes filtrate intermediate layer and lower filtrate intermediate layer, go up the inner wall connection of filtrate intermediate layer and last barrel, lower filtrate intermediate layer with the internal connection of barrel down, the mother liquor discharge gate includes first mother liquor discharge gate and second mother liquor discharge gate, first mother liquor discharge gate with go up the filtrate intermediate layer intercommunication, the second mother liquor discharge gate with lower filtrate intermediate layer intercommunication, go up the filtrate intermediate layer with do not communicate between the lower filtrate intermediate layer.

Further, the upper end and the lower end of the filter screen are fixedly connected with the inner wall of the cylinder body, the inner wall of the cylinder body is outwards arranged in a protruding mode, the protruding position is arranged at a position between the connecting position of the upper end and the lower end of the filter screen, other positions of the upper end and the lower end of the filter screen are removed, a gap is reserved between the other positions of the upper end and the lower end of the filter screen and the inner wall of the cylinder body, and a filtrate interlayer for storing mother liquor is formed in the gap.

The beneficial effects of the utility model are as follows:

1) Through be provided with the filtrate intermediate layer between the filter screen with in the inner wall of barrel, the crystal mush gets into the cavity through the feed inlet in, the mother liquor in the crystal mush filters the filtrate intermediate layer through the filter screen, then the mother liquor flows out the thickener through the mother liquor discharge gate, continue evaporating in the evaporation plant, because the mother liquor flows out through the filter screen, do not carry a large amount of crystals in the mother liquor, the crystal concentration risees in the crystal mush that makes the stay in the cavity, improve the thickening effect, can solve current thickener mother liquor and carry a large amount of crystals, the problem such as thickening effect is not enough, and then guarantee the separation effect of solid-liquid separation equipment and the smooth operation of whole evaporation plant.

2) Through the tangent setting of feed inlet and barrel lateral wall, the crystal mush after the feeding flows downwards along the section of thick bamboo wall rotation, and rotatory flow produces centrifugal force, is favorable to the mother liquor to filter the filtrate intermediate layer through the filter screen, improves the separation effect of mother liquor.

3) Through agitating unit's setting, the rotatory in-process of (mixing) shaft drives the brilliant thick liquid rotation in the cavity, increases the centrifugal force of brilliant thick liquid, improves the separation effect of mother liquor and brilliant thick liquid. In the process of stirring shaft rotation, the stirring spiral belt is driven to rotate, in the process of stirring spiral belt rotation, crystals trapped on the surface of the filter screen are pushed, the crystals fall into a discharge hole at the bottom of the thickener and are discharged to solid-liquid separation equipment, and the filter screen is prevented from being blocked by the crystals.

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 utility model.

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram showing the connection of components in a thickener according to an embodiment of the present utility model;

in the figure: 1. a cylinder; 11. an upper cylinder; 12. a lower cylinder; 13. a barrel cover; 2. a feed inlet; 3. a discharge port; 31. a mother liquor discharge port; 311. a first mother liquor discharge port; 312. a second mother liquor discharge port; 4. sandwiching the filtrate; 32. a solid-liquid discharge port; 41. an upper filtrate interlayer; 42. sandwiching the lower filtrate; 5. a filter screen; 6. a stirring device; 61. a driving motor; 62. a stirring shaft; 63. stirring the ribbon; 7. a cavity.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

Referring to fig. 1, the thickener in this embodiment is applied to an evaporation desalting process in an industrial production process, and is used for pre-separating evaporated crystal slurry, filtering most of mother liquor, increasing the solid content of crystal slurry, and comprises a barrel 1, wherein the barrel 1 comprises a barrel cover 13, an upper barrel 11 and a lower barrel 12, the upper barrel 11 is a cylinder, the lower barrel 12 is a cone, the upper barrel 11 and the lower barrel 12 are integrally connected, and the barrel cover 13 is in sealing connection with one end of the upper barrel 11, which is far away from the lower barrel 12.

In some embodiments, a cavity 7 is provided in the barrel 1, a feed inlet 2 is provided at the middle upper part of the barrel 1, the feed inlet 2 is tangential to the side wall of the barrel 1 connected with the feed inlet 2, the crystal slurry is fed tangentially through the feed inlet 2, the fed crystal slurry flows downwards along the inner wall of the barrel 1 in a rotating way, and centrifugal force is generated by the rotating flow. Still be provided with discharge gate 3 on the barrel 1, discharge gate 3 set up in the below of feed inlet 2 and with cavity 7 intercommunication, discharge gate 3 includes mother liquor discharge gate 31 and solid-liquid discharge gate 3, and mother liquor discharge gate 31 is connected with the evaporation plant in the industrial production process, and the mother liquor flows back entering evaporation plant from the thickener and evaporates once more, and solid-liquid discharge gate 3 is connected with the solid-liquid separation device in the industrial production process, carries out solid-liquid separation to the crystal thick liquid after the thickening through solid-liquid separation device.

In some embodiments, the filter screen 5 is disposed in the cavity 7, the upper and lower ends of the filter screen 5 are fixedly connected with the inner wall of the barrel 1, the inner wall of the barrel 1 is disposed protruding outwards between the connection part of the filter screen 5, so that the upper and lower ends of the filter screen 5 are removed, a gap is left between other parts and the inner wall of the barrel 1, the gap forms a filtrate interlayer 4 for storing mother liquor, the fed crystal slurry flows downwards along the barrel wall in a rotating manner, centrifugal force is generated by the rotary flow, the mother liquor is filtered to the filtrate interlayer 4 through the filter screen 5, and flows out of the thickener from the mother liquor discharge port 31 after being collected, and then is converted back to the evaporation device to continue evaporation, crystals in the crystal slurry are trapped on the surface of the filter screen 5, thereby separating part of the crystal slurry from the crystal slurry. Compared with the existing thickener, the thickener has small volume, low investment and small occupied space.

In some embodiments, the filtrate interlayer 4 comprises an upper filtrate interlayer 41 and a lower filtrate interlayer 42, the upper filtrate interlayer 41 is connected with the inner wall of the upper cylinder 11, the lower filtrate interlayer 42 is connected with the inner side of the lower cylinder 12, the mother liquor discharge port 31 comprises a first mother liquor discharge port 311 and a second mother liquor discharge port 312, the first mother liquor discharge port 311 is communicated with the upper filtrate interlayer 41, the second mother liquor discharge port 312 is communicated with the lower filtrate interlayer 42, and the upper filtrate interlayer 41 is not communicated with the lower filtrate interlayer 42, so that the upper filtrate interlayer 41 and the lower filtrate interlayer 42 are independently filtered without influence.

In some embodiments, the stirring device 6 further comprises a stirring device 6, the stirring device 6 comprises a driving motor 61 and a stirring shaft 62, the driving motor 61 is arranged above the barrel cover 13, one end of the stirring shaft 62 is connected with the driving motor 61, the other end penetrates through the barrel cover 13 and stretches into the cavity 7, and the driving motor 61 can drive the stirring shaft 62 to rotate. The stirring device 6 further comprises a stirring ribbon 63, wherein the stirring ribbon 63 is a spiral blade, and the stirring ribbon 63 extends from the cavity 7 of the upper cylinder 11 to the cavity 7 of the lower cylinder 12 from top to bottom by taking the stirring shaft 62 as a center. The inner side surface of the stirring screw belt 63 is fixedly connected with the stirring shaft 62, the outer side surface of the stirring screw belt 63 is abutted against the filter screen 5, on one hand, the stirring screw belt 63 is driven to rotate in the rotating process of the stirring shaft 62, and in the rotating process of the stirring screw belt 63, crystals trapped on the surface of the filter screen 5 are pushed to fall into the solid-liquid discharge port 32 at the bottom of the thickener and then discharged to solid-liquid separation equipment, so that the filter screen 5 is prevented from being blocked by the crystals; on the other hand, in the process of rotating the stirring ribbon 63, crystal slurry in the cavity 7 is driven to rotate, the centrifugal force of the crystal slurry is increased, the separation effect of mother liquor and the crystal slurry is improved, the problems that a large amount of crystals are entrained in the mother liquor of the existing thickener, the thickening effect is insufficient and the like can be solved, and then the separation effect of solid-liquid separation equipment and the smooth operation of the whole set of evaporation device are ensured.

The working process comprises the following steps: the crystal slurry enters the cavity 7 of the thickener through the feed inlet 2, is rotated downwards along the cylinder wall to be left on the filter screen 5, under the action of centrifugal force, the mother liquor enters the filtrate interlayer 4, is discharged from the mother liquor discharge port 31 after converging and returns to the evaporation system to continue evaporating, and the crystals trapped on the filter screen 5 fall into the thick crystal slurry near the solid-liquid discharge port 32 of the lower cylinder 12 through the pushing action of the stirring screw belt 63, and are discharged from the solid-liquid discharge port 32 to solid-liquid separation equipment such as a centrifuge.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

The above embodiments are only for illustrating the technical concept and features of the present utility model, and are intended to enable those skilled in the art to understand the content of the present utility model and to implement the same, but are not intended to limit the scope of the present utility model, and all equivalent changes or modifications made according to the spirit of the present utility model should be included in the scope of the present utility model.

Claims

1. The utility model provides a thickener, includes barrel (1), be provided with cavity (7) in barrel (1), be provided with on barrel (1) with feed inlet (2) and solid-liquid discharge gate (32) of cavity (7) intercommunication, be provided with filter screen (5) in cavity (7), filter screen (5) with be provided with filtrate intermediate layer (4) between the inner wall of barrel (1), be provided with on barrel (1) mother liquor discharge gate (31) with filtrate intermediate layer (4) intercommunication.

2. A thickener according to claim 1, wherein the feed inlet (2) is arranged tangentially to the side wall of the cylinder (1) to which it is connected.

3. A thickener according to claim 1, further comprising a stirring device (6), wherein the stirring device (6) comprises a driving motor (61) and a stirring shaft (62), the driving motor (61) is arranged above the cylinder (1), one end of the stirring shaft (62) is connected with the driving motor (61), and the other end of the stirring shaft penetrates through the cylinder (1) and stretches into the cavity (7).

4. A thickener according to claim 3, wherein the stirring device (6) further comprises a stirring screw belt (63), the stirring screw belt (63) is a spiral blade, the stirring screw belt (63) is arranged in the cavity (7) from top to bottom with the stirring shaft (62) as a center, the inner side surface of the stirring screw belt (63) is fixedly connected with the stirring shaft (62), and the outer side surface of the stirring screw belt is abutted against the filter screen (5).

5. A thickener according to claim 1, wherein the barrel (1) comprises a barrel cover (13), an upper barrel (11) and a lower barrel (12), the upper barrel (11) and the lower barrel (12) are integrally connected, and one ends of the barrel cover (13) and the upper barrel (11) far away from the lower barrel (12) are in sealing connection.

6. The thickener according to claim 5, wherein the filtrate interlayer (4) comprises an upper filtrate interlayer (41) and a lower filtrate interlayer (42), the upper filtrate interlayer (41) is connected with the inner wall of the upper cylinder (11), the lower filtrate interlayer (42) is connected with the inner part of the lower cylinder (12), the mother liquor discharge port (31) comprises a first mother liquor discharge port (311) and a second mother liquor discharge port (312), the first mother liquor discharge port (311) is communicated with the upper filtrate interlayer (41), the second mother liquor discharge port (312) is communicated with the lower filtrate interlayer (42), and the upper filtrate interlayer (41) is not communicated with the lower filtrate interlayer (42).

7. The thickener according to claim 1, wherein the upper end and the lower end of the filter screen (5) are fixedly connected with the inner wall of the cylinder (1), the inner wall of the cylinder (1) is arranged in an outward protruding manner, the protruding position is arranged at a position between the connection position of the upper end and the lower end of the filter screen (5), a gap is reserved between the other positions of the upper end and the lower end of the filter screen (5) and the inner wall of the cylinder (1), and the gap forms a filtrate interlayer (4) for storing mother liquor.