Ammonium sulfate wastewater evaporation crystallization device

Abstract

This utility model relates to the field of environmental protection technology, specifically to an ammonium sulfate wastewater evaporation and crystallization device. It includes an evaporator tank, an evaporator located outside the evaporator tank, a first filter press connected to the inner cavity of the evaporator tank and the evaporator tank, a second filter press connected to the bottom of the evaporator tank, a return pipe connected to the inner cavity of the second filter press and the top of the evaporator tank, a defoamer storage tank connected to the top of the evaporator tank and used to hold defoamer, and a turntable rotatably connected to the inner surface of the defoamer storage tank. By incorporating auxiliary mechanisms, this utility model not only prevents stratification of the ammonium sulfate solution in the evaporator tank during bidirectional stirring, thus avoiding uneven heating in different areas, but also automatically releases defoamer into the evaporator tank to suppress foam when the stirring speed is too fast and the solution violently agitates, thereby ensuring uniform heating in all areas of the evaporator tank and stable operation of the device.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to an ammonium sulfate wastewater evaporation and crystallization device. Background Technology

[0002] The ammonium sulfate wastewater evaporation and crystallization device is a specialized equipment for treating industrial wastewater containing ammonium sulfate. The device evaporates water to make the ammonium sulfate in the wastewater reach a supersaturated state and crystallize out, which greatly reduces the concentration of pollutants in the wastewater and makes the treated wastewater meet the discharge standards, thereby reducing the harm to the environment.

[0003] In the prior art, a high-efficiency ammonium sulfate evaporation and crystallization device with patent publication number CN214634151U includes a continuous evaporator, a first filter press connected to the continuous evaporator, an evaporation tank connected to the first filter press, an evaporation tube provided in the evaporation tank, circulating heat transfer oil flowing through the evaporation tube, the evaporation tube being spirally distributed in the evaporation tank, a second filter press connected to the bottom of the evaporation tank, and a stirring component provided in the evaporation tank, the stirring component being connected to a stirring shaft, a stirring motor connected above the stirring shaft, and the stirring motor being located above the evaporation tank;

[0004] In this evaporation crystallization device, the stirring component is driven by a motor to rotate in one direction during the stirring of the ammonium sulfate solution. The unidirectional rotation of the stirring component usually causes the solution to form a fixed circulation direction, resulting in stratified flow of the solution in the evaporation tank. This stratified flow causes uneven heating in different areas of the solution, leading to a decrease in the overall evaporation rate. Furthermore, when the stirring speed is too fast, the solution usually causes violent turbulence and generates a large amount of foam. The foam occupies the effective space in the evaporation tank, reduces the contact area between the solution and the evaporation tube, hinders heat transfer, and thus reduces evaporation efficiency, affecting the speed and yield of ammonium sulfate crystallization. Utility Model Content

[0005] To address the aforementioned shortcomings of existing technologies, this invention provides an ammonium sulfate wastewater evaporation and crystallization device, which effectively solves the problems in existing technologies where unidirectional rotation of the stirring component leads to stratified flow of the solution within the evaporation tank, and excessive stirring speed causes violent turbulence and generates a large amount of foam.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides an ammonium sulfate wastewater evaporation and crystallization device, including a crystallization device body, including an evaporator, an evaporator disposed outside the evaporator, a first filter press connected to the inner cavity of the evaporator and connected to the evaporator, a second filter press connected to the bottom of the evaporator, a return pipe connected to the inner cavity of the second filter press and connected to the top of the evaporator, a defoamer storage tank connected to the top of the evaporator and used to carry defoamer, and a turntable rotatably connected to the inner surface of the defoamer storage tank;

[0008] The auxiliary mechanism includes a stirring assembly for simultaneously and bidirectionally stirring the ammonium sulfate solution inside the evaporator, a transmission assembly for driving the rotation of the stirring assembly, and a feeding assembly that can automatically add defoamer to the inner wall of the evaporator when the stirring assembly rotates too fast.

[0009] The stirring assembly is located at the top of the evaporator, the transmission assembly is located outside the stirring assembly, and the feeding assembly is located outside the defoamer storage tank.

[0010] The stirring assembly includes a motor adapted to be installed above the evaporator, a drive rod fixedly connected to the output end of the motor via a coupling, a first bevel gear fixedly sleeved on the outer surface of the drive rod, a second bevel gear meshing with the outer surface of the first bevel gear, and a third bevel gear meshing with the other side of the second bevel gear.

[0011] Furthermore, the stirring assembly also includes a rotating sleeve fixedly connected to the inner surface of the third bevel gear, and stirring blades fixedly connected to the drive rod and the through end of the rotating sleeve, respectively.

[0012] Furthermore, the inner surface of the rotating sleeve is rotatably connected to the outer surface of the drive rod, and a rotating bearing sleeve is installed at the connection between the rotating sleeve and the evaporator.

[0013] Furthermore, the transmission assembly includes a first pulley fixedly sleeved on the outer surface of the drive rod, a belt sleeved on the outer surface of the first pulley, and a second pulley sleeved on the inner surface of the other end of the belt.

[0014] Furthermore, the feeding assembly includes a rotating rod fixedly connected to the inner surface of the second pulley, a swing rod fixedly installed on the outer surface of the rotating rod via a bearing, a counterweight fixedly connected to the outer end face of the swing rod, a transmission rod hinged to the other end of the counterweight, and a movable sleeve hinged to the other end of the transmission rod.

[0015] Furthermore, the outer end face of the rotating rod is fixedly mounted to the top of the evaporator via a bearing, and the inner surface of the movable sleeve is movably connected to the outer surface of the rotating rod;

[0016] The centrifugal force generated when the rotating rod rotates can drive the counterweight to swing the pendulum. Then, through the cooperation of the pendulum and the transmission rod, the movable sleeve is driven to rotate while moving vertically along the surface of the rotating rod.

[0017] Furthermore, the feeding assembly also includes a force-bearing block movably connected to the outer surface of the movable sleeve, a driven rod fixedly connected to the outer surface of the force-bearing block, a connecting rod hinged to the outer end face of the driven rod, and a connecting block hinged to the other end of the connecting rod and used in conjunction with the turntable.

[0018] Furthermore, a rotating bearing sleeve is installed at the connection between the center of the outer surface of the driven rod and the evaporator, and the inner surface of the connecting block is fixedly connected to the through end of the turntable.

[0019] The technical solution provided by this utility model has the following advantages compared with the known prior art:

[0020] This invention, by setting up an auxiliary mechanism, can not only prevent the ammonium sulfate solution in the evaporator from flowing in layers and causing uneven heating in different areas through bidirectional stirring, but also automatically release defoamer into the evaporator to suppress foam when the stirring speed is too fast and the solution violently churns and generates a large amount of foam. This achieves the effect of ensuring uniform heating in all areas of the evaporator while ensuring stable operation of the device. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the auxiliary mechanism in this utility model;

[0024] Figure 3 This utility model Figure 2 A magnified view of the structure at point A in the middle;

[0025] Figure 4 This is a structural schematic diagram of the feeding assembly from another perspective in this utility model;

[0026] Figure 5 This utility model Figure 4A magnified structural diagram of a portion of point B in the middle section;

[0027] Figure 6 This is a schematic diagram of the internal structure of the crystallization tank in this utility model.

[0028] The labels in the diagram represent: 100, crystallization device body; 110, evaporator; 120, evaporator; 130, first filter press; 140, second filter press; 150, return pipe; 160, defoamer storage tank; 170, turntable; 200, auxiliary mechanism; 210, stirring assembly; 211, motor; 212, drive rod; 213, first bevel gear; 214, second bevel gear; 215, third bevel gear; 216, rotating sleeve; 217, stirring blade; 220, transmission assembly; 221, first pulley; 222, belt; 223, second pulley; 230, feeding assembly; 231, rotating rod; 232, swing rod; 233, counterweight; 234, transmission rod; 235, movable sleeve; 236, force-bearing block; 237, driven rod; 238, connecting rod; 239, connecting block. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] The present invention will be further described below with reference to the embodiments.

[0031] Example: An ammonium sulfate wastewater evaporation and crystallization device, see attached document. Figure 1 - Appendix Figure 6 ,include,

[0032] The crystallization apparatus body 100 includes an evaporator 110, an evaporator 120 disposed outside the evaporator 110, a first filter press 130 connected to the inner cavity of the evaporator 120 and connected to the evaporator 110, a second filter press 140 connected to the bottom of the evaporator 110, a return pipe 150 connected to the inner cavity of the second filter press 140 and connected to the top of the evaporator 110, a defoamer storage tank 160 connected to the top of the evaporator 110 and used to carry defoamer, and a turntable 170 rotatably connected to the inner surface of the defoamer storage tank 160.

[0033] It should be noted that the evaporator 110 is used for the evaporation and crystallization of ammonium sulfate solution, the evaporator 120 is used for the preliminary evaporation and concentration of wastewater, and the concentrated solution is sent to the subsequent pressure filtration stage. The first filter press 130 is used for solid-liquid separation of the solution output from the evaporator, and the clarified mother liquor is sent to the evaporator 110 for further crystallization. The second filter press 140 is used to separate the crystallized ammonium sulfate crystals and mother liquor in the evaporator. The crystals are discharged as a product, and the mother liquor is returned to the evaporator 110 for recycling through the return pipe 150. The defoamer storage tank 160 is used to store defoamer, and the release of defoamer can be controlled by the rotation of the turntable 170 to suppress foam. The crystallization device body 100 is existing technology, and this solution will not describe it in detail. Moreover, those skilled in the art can clearly understand its working principle.

[0034] The auxiliary mechanism 200 includes a stirring assembly 210 for simultaneously and bidirectionally stirring the ammonium sulfate solution inside the evaporator 110, a transmission assembly 220 for driving the rotational power of the stirring assembly 210, and a feeding assembly 230 that can automatically add defoamer to the inner wall of the evaporator 110 when the rotational speed of the stirring assembly 210 is too fast.

[0035] The stirring assembly 210 is located on the top of the evaporator 110, the transmission assembly 220 is located on the outside of the stirring assembly 210, and the feeding assembly 230 is located on the outside of the defoamer storage tank 160.

[0036] The stirring assembly 210 includes a motor 211 adapted to be installed above the evaporator 110, a drive rod 212 fixedly connected to the output end of the motor 211 via a coupling, a first bevel gear 213 fixedly sleeved on the outer surface of the drive rod 212, a second bevel gear 214 meshing with the outer surface of the first bevel gear 213, and a third bevel gear 215 meshing with the other side of the second bevel gear 214.

[0037] Specifically, the stirring assembly 210 also includes a rotating sleeve 216 fixedly connected to the inner surface of the third bevel gear 215, and stirring blades 217 fixedly connected to the drive rod 212 and the through end of the rotating sleeve 216, respectively.

[0038] It should be noted that the motor 211 is used to drive the drive rod 212 to rotate, so that the drive rod 212 drives the first bevel gear 213 and the bottom stirring blade 217 to rotate clockwise. At the same time, through the cooperation of the first bevel gear 213 and the second bevel gear 214, the direction of rotational power is changed and driven to rotate, so that the third bevel gear 215 drives the bottom stirring blade 217 to rotate clockwise and counterclockwise through the rotating sleeve 216. The two stirring blades 217 form a bidirectional rotation in the evaporator 110, breaking the unidirectional circulation and avoiding solution stratification, so as to ensure uniform heating in each area and improve evaporation efficiency.

[0039] Furthermore, the inner surface of the rotating sleeve 216 is rotatably connected to the outer surface of the drive rod 212, and a rotating bearing sleeve is installed at the connection between the rotating sleeve 216 and the evaporator 110.

[0040] Preferably, the transmission assembly 220 includes a first pulley 221 fixedly sleeved on the outer surface of the drive rod 212, a belt 222 sleeved on the outer surface of the first pulley 221, and a second pulley 223 sleeved on the inner surface of the other end of the belt 222.

[0041] It should also be noted that the first pulley 221 can rotate synchronously with the drive rod 212 and transmit power to the second pulley 223 through the belt 222, so that the second pulley 223 drives the rotating rod 231 to rotate, and transmits the rotation speed of the mixing component to the feeding component 230 synchronously.

[0042] It should be noted that the feeding assembly 230 includes a rotating rod 231 fixedly connected to the inner surface of the second pulley 223, a swing rod 232 fixedly installed on the outer surface of the rotating rod 231 by bearings, a counterweight 233 fixedly connected to the outer end face of the swing rod 232, a transmission rod 234 hinged to the other end of the counterweight 233, and a movable sleeve 235 hinged to the other end of the transmission rod 234.

[0043] Furthermore, the outer end face of the rotating rod 231 is fixedly installed on the top of the evaporator 110 by a bearing, and the inner surface of the movable sleeve 235 is movably connected to the outer surface of the rotating rod 231.

[0044] The centrifugal force generated when the rotating rod 231 rotates can drive the counterweight 233 to swing the swing rod 232. Then, through the cooperation of the swing rod 232 and the transmission rod 234, the movable sleeve 235 is driven to rotate while moving vertically along the surface of the rotating rod 231.

[0045] Specifically, the feeding assembly 230 also includes a force-bearing block 236 movably connected to the outer surface of the movable sleeve 235, a driven rod 237 fixedly connected to the outer surface of the force-bearing block 236, a connecting rod 238 hinged to the outer end face of the driven rod 237, and a connecting block 239 hinged to the other end of the connecting rod 238 and used in conjunction with the turntable 170.

[0046] It should be explained that the rotating rod 231 can rotate synchronously with the second pulley 223, and its rotational speed is related to the rotational speed of the stirring assembly 210. The swing rod 232 and the counterweight 233 can swing with the centrifugal force generated when the rotating rod 231 rotates. The higher the rotational speed of the rotating rod 231, the greater the centrifugal force, and the greater the outward swing amplitude of the swing rod 232. The transmission rod 234 is used to convert the swing of the swing rod 232 into the vertical movement of the movable sleeve 235, so that the movable sleeve 235 rotates synchronously with the rotating rod 231 under the push of the transmission rod 234. At that time, it moves vertically along the surface of the rotating rod 231. The higher the rotation speed of the rotating rod 231, the farther the movable sleeve 235 moves. The force block 236 is used to receive the vertical thrust of the movable sleeve 235 and drive the driven rod 237 to rotate. Then, through the cooperation of the driven rod 237 and the connecting rod 238, the connecting block 239 is driven to rotate around the through end of the turntable 170. Finally, under the push of the connecting block 239, the turntable 170 is driven to rotate, opening the discharge port of the defoamer storage tank 160 and releasing the defoamer to the inner wall of the evaporator 110 to suppress foam.

[0047] Preferably, a rotating bearing sleeve is installed at the connection between the center of the outer surface of the driven rod 237 and the evaporator 110, and the inner surface of the connecting block 239 is fixedly connected to the through end of the turntable 170.

[0048] When using,

[0049] Ammonium sulfate wastewater is first pre-evaporated and concentrated in evaporator 120, and then enters the first filter press 130 for solid-liquid separation. The separated clarified mother liquor enters evaporator 110.

[0050] At this time, the motor 211 is started to drive the drive rod 212 to rotate. The drive rod 212 drives the first bevel gear 213 and the bottom stirring blade 217 to rotate clockwise. Then, through the cooperation of the first bevel gear 213 and the second bevel gear 214, the third bevel gear 215, the rotating sleeve 216 and the bottom stirring blade 217 are driven to rotate counterclockwise. This makes the two sets of stirring blades 217 form bidirectional stirring in the evaporator 110, avoiding solution stratification.

[0051] When the drive rod 212 rotates, it drives the first pulley 221 to rotate synchronously. Through the cooperation of the first pulley 221 and the belt 222, it drives the second pulley 223 and the rotating rod 231 to rotate synchronously.

[0052] When the stirring speed of the device is too fast: the centrifugal force generated by the high-speed rotation of the rotating rod 231 drives the counterweight 233 to swing the swing rod 232. The swing rod 232 pushes the movable sleeve 235 to move vertically along the surface of the rotating rod 231 through the transmission rod 234. Then the movable sleeve 235 pushes the force block 236 to drive the driven rod 237 to rotate. Then, through the cooperation of the driven rod 237 and the connecting rod 238, the connecting block 239 is driven to rotate around the turntable 170. Finally, the turntable 170 is rotated, opening the outlet of the defoamer storage tank 160 and releasing the defoamer to the inner wall of the evaporator 110.

[0053] After crystallization, the material in the evaporator 110 enters the second filter press 140 for separation. The crystals are discharged, and the mother liquor is returned to the evaporator 110 for recycling through the return pipe 150.

[0054] In summary, by setting up the auxiliary mechanism 200, not only can the solution be prevented from stratifying and flowing in different areas due to bidirectional stirring when stirring the ammonium sulfate solution in the evaporator 110, thus avoiding uneven heating in different areas, but also an antifoaming agent can be automatically released into the evaporator 110 to suppress foam when the stirring speed is too fast and the solution is violently churning and generating a large amount of foam. This ensures that the heating of different areas in the evaporator 110 is uniform while ensuring the stable operation of the device.

[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. An ammonium sulfate wastewater evaporation and crystallization apparatus, comprising, characterized in that, The crystallization apparatus body (100) includes an evaporator (110), an evaporator (120) disposed outside the evaporator (110), a first filter press (130) communicating with the inner cavity of the evaporator (120) and the evaporator (110), a second filter press (140) communicating with the bottom of the evaporator (110), a return pipe (150) communicating with the inner cavity of the second filter press (140) and the top of the evaporator (110), a defoamer storage tank (160) communicating with the top of the evaporator (110) and used to carry the defoamer, and a turntable (170) rotatably connected to the inner surface of the defoamer storage tank (160). The auxiliary mechanism (200) includes a stirring assembly (210) for simultaneously and bidirectionally stirring the ammonium sulfate solution inside the evaporator (110), a transmission assembly (220) for transmitting the rotational power of the stirring assembly (210), and a feeding assembly (230) for automatically adding defoamer to the inner wall of the evaporator (110) when the rotational speed of the stirring assembly (210) is too fast. The stirring assembly (210) is located on the top of the evaporator (110), the transmission assembly (220) is located on the outside of the stirring assembly (210), and the feeding assembly (230) is located on the outside of the defoamer storage tank (160). The stirring assembly (210) includes a motor (211) adapted to be installed above the evaporator (110), a drive rod (212) fixedly connected to the output end of the motor (211) via a coupling, a first bevel gear (213) fixedly sleeved on the outer surface of the drive rod (212), a second bevel gear (214) meshing with the outer surface of the first bevel gear (213), and a third bevel gear (215) meshing with the other side of the second bevel gear (214).

2. The ammonium sulfate wastewater evaporation crystallization device according to claim 1, characterized in that, The stirring assembly (210) also includes a rotating sleeve (216) fixedly connected to the inner surface of the third bevel gear (215), and stirring blades (217) fixedly connected to the drive rod (212) and the through end of the rotating sleeve (216).

3. The ammonium sulfate wastewater evaporation crystallization device according to claim 2, characterized in that, The inner surface of the rotating sleeve (216) is rotatably connected to the outer surface of the drive rod (212), and a rotating bearing sleeve is installed at the connection between the rotating sleeve (216) and the evaporator (110).

4. The ammonium sulfate wastewater evaporation crystallization device according to claim 3, characterized in that, The transmission assembly (220) includes a first pulley (221) fixedly sleeved on the outer surface of the drive rod (212), a belt (222) sleeved on the outer surface of the first pulley (221), and a second pulley (223) sleeved on the inner surface of the other end of the belt (222).

5. The apparatus for evaporation crystallization of ammonium sulfate waste water according to claim 4, characterized by The feeding assembly (230) includes a rotating rod (231) fixedly connected to the inner surface of the second pulley (223), a swing rod (232) fixedly installed on the outer surface of the rotating rod (231) by bearings, a counterweight (233) fixedly connected to the outer end face of the swing rod (232), a transmission rod (234) hinged to the other end of the counterweight (233), and a movable sleeve (235) hinged to the other end of the transmission rod (234).

6. The ammonium sulfate wastewater evaporation crystallization device according to claim 5, characterized in that, The outer end face of the rotating rod (231) is fixedly installed on the top of the evaporator (110) by a bearing, and the inner surface of the movable sleeve (235) is movably connected to the outer surface of the rotating rod (231). The centrifugal force generated when the rotating rod (231) rotates can drive the counterweight (233) to swing the pendulum (232). Then, through the cooperation of the pendulum (232) and the transmission rod (234), the movable sleeve (235) is driven to rotate while moving vertically along the surface of the rotating rod (231).

7. An ammonium sulfate wastewater evaporation crystallization apparatus according to claim 6, characterized by The feeding assembly (230) further includes a force-bearing block (236) movably connected to the outer surface of the movable sleeve (235), a driven rod (237) fixedly connected to the outer surface of the force-bearing block (236), a connecting rod (238) hinged to the outer end face of the driven rod (237), and a connecting block (239) hinged to the other end of the connecting rod (238) and used in conjunction with the turntable (170).

8. The ammonium sulfate wastewater evaporation crystallization device according to claim 7, characterized in that, A rotating bearing sleeve is installed at the connection between the center of the outer surface of the driven rod (237) and the evaporator (110), and the inner surface of the connecting block (239) is fixedly connected to the through end of the turntable (170).

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