CN113857167A

CN113857167A - Caustic soda evaporation device

Info

Publication number: CN113857167A
Application number: CN202111045498.XA
Authority: CN
Inventors: 刘海燕
Original assignee: Dongying Vocational College
Current assignee: Dongying Vocational College
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2021-12-31

Abstract

The invention discloses a caustic soda evaporation device, which relates to the field of chemical equipment, and adopts the technical scheme that the caustic soda evaporation device comprises a moving mechanism arranged in a caustic soda evaporator and a cleaning mechanism movably arranged above the evaporator, wherein the cleaning mechanism comprises a cleaning frame movably arranged above the evaporator, and a plurality of cleaning units for cleaning the inner wall of a heating pipe of the evaporator are arranged on the cleaning frame; the moving mechanism comprises a moving plate movably arranged in the evaporator, a plurality of through holes are formed in a plate body of the moving plate, each through hole corresponds to one heating pipe, four grooves are circumferentially arrayed in the plate body of the moving plate, a walking unit is arranged in each groove, and the walking units are used for driving the moving plate to move along the inner wall of the evaporator. The invention has the beneficial effects that: simple structure, convenient to use can wash the heating pipe in the evaporimeter, improves the cleaning performance, reduces the scavenging period, reduces equipment down time, improves production efficiency.

Description

Caustic soda evaporation device

Technical Field

The invention relates to the field of chemical equipment, in particular to a caustic soda evaporation device.

Background

The concentration of the caustic soda solution produced by the diaphragm method is low, the mass fraction is only 10% -15%, the caustic soda solution can be changed into commercial alkali (30%, 42%, 45%, 50% of caustic soda solution or solid alkali) only by evaporation concentration, the consumption of evaporation steam accounts for about 20% of the total production cost of the caustic soda, salt scale is generated on the heating wall surface during evaporation due to the existence of a large amount of sodium chloride in the electrolyte, the heat transfer efficiency is seriously affected, and a common caustic soda evaporator continuously operates for 24-36 hours, and must be stopped for cleaning once to clean the salt scale on the heating wall surface.

Need take out the evaporimeter when wasing the caustic soda evaporimeter at present stage, use high-pressure squirt to wash the heating wall, because the evaporimeter is longer, high-pressure squirt can't cause pressure to inside salt dirt, and it is poor to lead to inside salt dirt cleaning performance, influences the result of use of middle part evaporimeter.

Disclosure of Invention

In order to solve the technical problems, the invention provides a caustic soda evaporation device.

The technical scheme is that the device comprises a moving mechanism arranged in a caustic soda evaporator and a cleaning mechanism movably arranged above the evaporator, wherein the cleaning mechanism comprises a cleaning frame movably arranged above the evaporator, and a plurality of cleaning units used for cleaning the inner wall of a heating pipe of the evaporator are arranged on the cleaning frame;

the moving mechanism sets up the movable plate inside the evaporimeter including the activity, set up a plurality of through-hole on the plate body of movable plate, every the through-hole corresponds with a heating pipe respectively, circumference array sets up four recesses, every on the plate body of movable plate all set up a walking unit in the recess, walking unit is used for the drive the movable plate is followed the inner wall of evaporimeter removes, four walking unit sets up through rotating gear ring on the movable plate links, one of them fixed driving motor that sets up on the walking unit, driving motor is used for the drive the gear ring is rotatory.

Preferably, the walking unit comprises a bracket fixedly arranged in the groove, a roller is rotatably arranged on the bracket, a driven gear is coaxially and fixedly arranged on one side of the roller, and the driven gear is meshed with the gear ring;

the outer surface of the roller is provided with a spiral boss, and the outer wall of the boss is tightly attached to the inner wall of the evaporator.

Preferably, the rotation directions of the bosses on two adjacent rollers are opposite.

Preferably, the moving plate is provided with a plurality of annular magnetic rings, each magnetic ring corresponds to one through hole, and the magnetic poles of the inner wall and the outer wall of each magnetic ring are opposite.

Preferably, set up a plurality of notch on the wash rack, every notch corresponds with one of them heating pipe respectively, the fixed a plurality of mount that sets up on the wash rack, every mount corresponds with one of them notch, rotates on every mount and sets up the bobbin, twines the water pipe on the bobbin, the one end intercommunication high pressure water pump of water pipe, the other end runs through the notch and extends to in the heating pipe, be located water pipe one end rotation connection cleaning unit in the heating pipe.

Preferably, the cleaning unit comprises a flushing head, the interior of the flushing head is hollow, one end of the flushing head is rotatably connected with a rotary joint, and one end of the rotary joint is fixedly connected with one end of the water pipe;

a conical guide cone is arranged at one end, far away from the water pipe, of the flushing head, a plurality of nozzles are circumferentially arranged on the side wall of the guide cone, the included angle between the projection of each nozzle on the horizontal plane and the axis of the flushing head is a certain degree, a plurality of annular grooves are arrayed on the pipe body of the flushing head, and a plurality of knocking hammers are rotationally arranged in each annular groove;

the body of the flushing head is fixedly provided with bristles, and the bristles are located between the knocking hammer and the rotary joint.

Preferably, a plurality of inclined magnetic blocks are arranged on the pipe body of the flushing head in an array mode, and the magnetic poles corresponding to one side, facing the outer wall of the flushing head, of each magnetic block are the same as the magnetic poles of the inner wall of the magnetic ring.

The technical scheme provided by the embodiment of the invention has the following beneficial effects: simple structure, convenient to use can wash the heating pipe in the evaporimeter, improves the cleaning performance, reduces the scavenging period, reduces equipment down time, improves production efficiency.

Drawings

FIG. 1 is a schematic diagram of a process of using an embodiment of the present invention.

Fig. 2 is a schematic overall structure diagram of the embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a walking unit according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of a cleaning unit according to an embodiment of the present invention.

Wherein the reference numerals are: 1. a moving mechanism; 1-1, moving a board; 1-2, through holes; 1-3, a groove; 1-4, a walking unit; 1-41, a bracket; 1-42, rollers; 1-43, driven gear; 1-44, boss; 1-5, gear ring; 1-6, driving a motor; 1-7, a magnetic ring; 2. a cleaning mechanism; 2-1, cleaning rack; 2-2, a cleaning unit; 2-21, a rinsing head; 2-22, a rotary joint; 2-23, a guide cone; 2-24, a nozzle; 2-25, ring groove; 2-26, knocking hammer; 2-27, brush hair; 2-28, magnetic blocks; 2-3, a notch; 2-4, fixing frames; 2-5, a bobbin; 2-6, a water pipe; 20. an evaporator; 21. heating the tube.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are merely illustrative of the invention and are not intended to be limiting.

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.

In the description of the invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "connected" and "connected" are to be construed broadly, e.g. as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.

Example 1

Referring to fig. 1 to 4, the present invention provides a caustic soda evaporation apparatus, which comprises a moving mechanism 1 disposed inside a caustic soda evaporator 20 and a cleaning mechanism 2 movably disposed above the evaporator 20, wherein the cleaning mechanism 2 comprises a cleaning rack 2-1 movably disposed above the evaporator 20, and the cleaning rack 2-1 is provided with a plurality of cleaning units 2-2 for cleaning the inner wall of a heating pipe 21 of the evaporator 20;

the moving mechanism 1 comprises a moving plate 1-1 movably arranged in the evaporator 20, a plurality of through holes 1-2 are formed in a plate body of the moving plate 1-1, each through hole 1-2 corresponds to a heating pipe 21, four grooves 1-3 are circumferentially arranged on the plate body of the moving plate 1-1 in an array mode, a walking unit 1-4 is arranged in each groove 1-3, the walking unit 1-4 is used for driving the moving plate 1-1 to move along the inner wall of the evaporator 20, the four walking units 1-4 are linked through gear rings 1-45 rotatably arranged on the moving plate 1-1, a driving motor 1-46 is fixedly arranged on one walking unit 1-4, a waterproof cover is arranged on the outer side of the driving motor 1-46, steam is effectively isolated, and damage to the motor caused by high temperature and humidity brought by steam is avoided, the drive motor 1-46 is used to drive the ring gear 1-45 to rotate.

The walking unit 1-4 comprises a support 1-41 fixedly arranged in the groove 1-3, rollers 1-42 are rotatably arranged on the support 1-41, driven gears 1-43 are coaxially and fixedly arranged on one sides of the rollers 1-42, and the driven gears 1-43 are meshed with gear rings 1-45;

the outer surface of the roller 1-42 is provided with a spiral boss 1-44, and the outer wall of the boss 1-44 is tightly attached to the inner wall of the evaporator 20. The rollers 1 to 42 drive the lifting plate to reciprocate by continuously rubbing the bosses 1 to 44 with the inner wall of the evaporator 20 by using the rolling friction principle. The driving motors 1 to 46 drive the gear rings 1 to 45 to rotate, so that the four walking units 1 to 4 are driven to be linked, the four rollers 1 to 42 are driven to synchronously rotate, the lifting plate is always perpendicular to the axis of the evaporator 20 in the moving process, and the stability of the lifting plate in the using process is improved.

The rotating directions of the bosses 1-44 on two adjacent rollers 1-42 are opposite. Through the friction between the bosses 1-44 and the inner wall of the heating pipe 21, the circumferential force generated by the rollers 1-42 in the rotating process can be counteracted due to the opposite rotating directions of the two adjacent bosses 1-44, so that the lifting plate can only reciprocate along the axis of the evaporator 20, the cleaning unit 2-2 is driven to move, the middle part of the heating pipe 21 can be cleaned, the cleaning blind area is reduced, and the cleaning effect is improved.

The movable plate 1-1 is provided with a plurality of annular magnetic rings 1-47, each magnetic ring 1-47 corresponds to one through hole 1-2, and the magnetic poles of the inner walls and the outer walls of the magnetic rings 1-47 are opposite. The annular magnetic rings 1-47 can ensure that the cleaning unit 2-2 is always positioned in the middle of the heating pipe 21 in the cleaning process, improve the stability of the cleaning unit 2-2 in the working process,

a plurality of notches 2-3 are arranged on a cleaning rack 2-1, each notch 2-3 corresponds to one of the heating pipes 21, a plurality of fixing frames 2-4 are fixedly arranged on the cleaning rack 2-1, each fixing frame 2-4 corresponds to one notch 2-3, a bobbin 2-5 is rotatably arranged on each fixing frame 2-4, a bobbin motor is fixedly arranged on one side of each fixing frame, a motor shaft of the bobbin motor and the bobbin 2-5 are coaxially and fixedly arranged, the bobbin motor drives the bobbin 2-5 to rotate, a cleaning unit 2-2 and the moving plate 1-1 synchronously move up and down through the bobbin motor, a water pipe 2-6 is wound on the bobbin 2-5, one end of the water pipe 2-6 is communicated with a high-pressure water pump, and the other end penetrates through the notches 2-3 and extends into the heating pipe 21, one end of the water pipe 2-6 positioned in the heating pipe 21 is rotatably connected with the cleaning unit 2-2.

The cleaning unit 2-2 comprises a washing head 2-21, the washing head 2-21 is hollow, one end of the washing head 2-21 is rotatably connected with a rotary joint 2-22, and one end of the rotary joint 2-22 is fixedly connected with one end of a water pipe 2-6; the rotary joints 2-22 can keep the 2-6 state unchanged in the process of rotating the flushing heads 2-21, so that the phenomenon that the water pipes 2-6 are knotted due to the rotation of the flushing heads 2-21 is avoided, and the fluency of water in the water pipes, and the water yield and the water outlet pressure of the nozzles 2-24 are influenced;

one end of the flushing head 2-21, which is far away from the water pipe 2-6, is provided with a conical guide cone 2-23, the side wall of the guide cone 2-23 is circumferentially provided with a plurality of nozzles 2-24, the projection of each nozzle 2-24 on the horizontal plane forms an included angle of 30-60 degrees with the axis of the flushing head 2-21, the pipe body of the flushing head 2-21 is provided with a plurality of annular grooves 2-25 in an array manner, and each annular groove 2-25 is rotatably provided with a plurality of knocking hammers 2-26;

the pipe body of the flushing head 2-21 is fixedly provided with bristles 2-27, and the bristles 2-27 are positioned between the knocking hammer 2-26 and the rotary joint 2-22.

The high-pressure water pump provides high pressure, the high-pressure water pump sprays the high-pressure water to the inner wall of the heating pipe 21 through the nozzles 2 to 24, and because the nozzles 2 to 24 are obliquely arranged, the water flow flowing to the inner wall of the heating pipe 21 through the nozzles 2 to 24 forms a certain angle with the inner wall of the heating pipe 21, and salt scale attached to the inner wall of the heating pipe 21 can be washed to a certain degree; meanwhile, in the process of axially moving along the inner wall of the heating pipe 21, the washing heads 2-21 self rotate under the action of magnetic force, and the angle of water flow impacting the heating pipe 21 can be further changed through rotation, so that the salt scale is removed in an accelerated manner;

the flushing heads 2-21 drive the knocking hammers 2-26 to rotate in the rotating process, one ends of the knocking hammers 2-26, far away from the flushing heads 2-21, are heavy, the knocking hammers 2-26 are continuously in contact with the inner wall of the heating pipe 21 under the action of centrifugal force, the inner wall of the heating pipe 21 is continuously knocked by the knocking hammers 2-26, salt scale is separated from the heating pipe 21 through knocking, a good cleaning effect is achieved on some salt scale adhered to the heating pipe 21, then the inner wall of the heating pipe 21 is cleaned through the rotating bristles 2-27, and the cleaning degree of the inner surface of the heating pipe 21 is improved.

The pipe body of the flushing head 2-21 is provided with a plurality of inclined magnetic blocks 2-28 in an array mode, and the magnetic poles corresponding to one side, facing the outer wall of the flushing head 2-21, of each magnetic block 2-28 are the same as the magnetic poles of the inner wall of the magnetic ring. By utilizing the principle that like poles repel each other, because the magnetic blocks 2-28 are obliquely arranged, the flushing heads 2-21 rotate under the action of magnetic force, and meanwhile, the flushing heads 2-21 are driven to move in the heating pipe 21 by the reciprocating movement of the lifting plate and rotate while moving, so that the salt scale is removed.

When the invention is used, the moving mechanism 1 is internally arranged in the evaporator 20, when the heating pipe 21 needs to be cleaned, the upper part of the evaporator 20 is opened, one end of the heating pipe 21 is leaked, the cleaning mechanism 2 is erected at one end of the evaporator 20, each notch 2-3 corresponds to one heating pipe 21, a plurality of cleaning units 2-2 on the cleaning mechanism 2 are respectively placed at the upper end of the heating pipe 21, the driving motor 1-6 is started to drive the moving plate 1-1 to move to the upper part of the evaporator 20, the magnetic ring 1-7 is positioned at the outer side of the flushing head 2-21, the magnetic blocks 2-28 on the flushing head 2-21 are induced with the magnetic ring 1-7, the magnetic poles of the magnetic blocks 2-28 are the same as those of the magnetic ring 1-7, and the principle of like polarity repulsion is adopted, the magnetic ring 1-7 drives the flushing head 2-21 to rotate, at the moment, the high-pressure water gun is started, high-pressure water generated by the high-pressure water gun flows to the nozzles 2-24 through the water pipes 2-6 and flows to the inner wall of the heating pipe 21 after passing through the nozzles 2-24, the high-pressure water has a certain washing effect on salt scale inside the heating pipe 21 and washes a part of salt scale slightly attached to the inner wall of the heating pipe 21, meanwhile, the rotary washing heads 2-24 drive the knocking hammers 2-26 to rotate, so that the knocking hammers 2-26 remove some salt scale firmly attached, and meanwhile, the bristles 2-27 clean residual salt scale on the inner wall of the heating pipe 21.

In the cleaning process, the cleaning unit 2-2 is driven to move in the heating pipe 21 synchronously through the movement of the position of the moving mechanism 1 and the bobbin motor, so that the inner wall of the heating pipe is cleaned, and the cleaning effect on the middle part of the heating pipe 21 is improved.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The caustic soda evaporation device is characterized by comprising a moving mechanism (1) arranged in a caustic soda evaporator (20) and a cleaning mechanism (2) movably arranged above the evaporator (20), wherein the cleaning mechanism (2) comprises a cleaning frame (2-1) movably arranged above the evaporator (20), and a plurality of cleaning units (2-2) used for cleaning the inner wall of a heating pipe (21) of the evaporator (20) are arranged on the cleaning frame (2-1);

the moving mechanism (1) comprises a moving plate (1-1) movably arranged in the evaporator (20), a plurality of through holes (1-2) are formed in a plate body of the moving plate (1-1), each through hole (1-2) corresponds to one heating pipe (21), four grooves (1-3) are circumferentially arranged on the plate body of the moving plate (1-1) in an array mode, a walking unit (1-4) is arranged in each groove (1-3), the walking units (1-4) are used for driving the moving plate (1-1) to move along the inner wall of the evaporator (20), the four walking units (1-4) are linked through gear rings (1-45) rotatably arranged on the moving plate (1-1), and a driving motor (1-46) is fixedly arranged on one walking unit (1-4), the driving motor (1-46) is used for driving the gear ring (1-45) to rotate.

2. The caustic soda evaporation device according to claim 1, characterized in that the walking unit (1-4) comprises a bracket (1-41) fixedly arranged in the groove (1-3), a roller (1-42) is rotatably arranged on the bracket (1-41), a driven gear (1-43) is coaxially and fixedly arranged on one side of the roller (1-42), and the driven gear (1-43) is meshed with the gear ring (1-45);

the outer surface of the roller (1-42) is provided with a spiral boss (1-44), and the outer wall of the boss (1-44) is tightly attached to the inner wall of the evaporator (20).

3. Caustic soda evaporation unit according to claim 2, characterized in that the rotation directions of the bosses (1-44) of two adjacent rollers (1-42) are opposite.

4. The caustic soda evaporation device according to claim 3, wherein a plurality of annular magnetic rings (1-47) are arranged on the movable plate (1-1), each of the magnetic rings (1-47) corresponds to one of the through holes (1-2), and the magnetic poles of the inner walls and the outer walls of the magnetic rings (1-47) are opposite.

5. Caustic soda evaporation plant according to claim 5, characterized in that said washing rack (2-1) is provided with a plurality of notches (2-3), each notch (2-3) corresponding to one of the heating tubes (21), a plurality of fixed frames (2-4) are fixedly arranged on the cleaning rack (2-1), each fixed frame (2-4) corresponds to one notch (2-3), a bobbin (2-5) is rotatably arranged on each fixed frame (2-4), a water pipe (2-6) is wound on the bobbin (2-5), one end of the water pipe (2-6) is communicated with the high-pressure water pump, the other end of the water pipe penetrates through the notch (2-3) and extends into the heating pipe (21), and one end of the water pipe (2-6) positioned in the heating pipe (21) is rotatably connected with the cleaning unit (2-2).

6. Caustic soda evaporation plant according to claim 5, characterized in that said washing unit (2-2) comprises a washing head (2-21), the inside of said washing head (2-21) is hollow, one end of said washing head (2-21) is rotatably connected with a rotary joint (2-22), one end of said rotary joint (2-22) is fixedly connected with one end of a water pipe (2-6);

one end, far away from the water pipe (2-6), of the flushing head (2-21) is provided with a conical guide cone (2-23), the side wall of the guide cone (2-23) is circumferentially provided with a plurality of nozzles (2-24), the pipe body of the flushing head (2-21) is provided with a plurality of annular grooves (2-25) in an array manner, and each annular groove (2-25) is rotatably provided with a plurality of knocking hammers (2-26);

the pipe body of the flushing head (2-21) is fixedly provided with bristles (2-27), and the bristles (2-27) are positioned between the knocking hammer (2-26) and the rotary joint (2-22).

7. The caustic soda evaporation device as claimed in claim 6, wherein a plurality of inclined magnetic blocks (2-28) are arrayed on the tube body of the rinsing head (2-21), and the magnetic poles corresponding to the sides of each magnetic block (2-28) facing the outer wall of the rinsing head (2-21) are the same as the magnetic poles of the inner wall of the magnetic ring.