CN209967732U

CN209967732U - A crystallization kettle for silver nitrate production

Info

Publication number: CN209967732U
Application number: CN201920612048.6U
Authority: CN
Inventors: 郭盈怀; 赵培; 张辉; 马涛
Original assignee: SANMENXIA ZHAOYANG TECHNOLOGY Co Ltd
Current assignee: SANMENXIA ZHAOYANG TECHNOLOGY Co Ltd
Priority date: 2019-04-30
Filing date: 2019-04-30
Publication date: 2020-01-21
Anticipated expiration: 2029-04-30

Abstract

The utility model relates to a crystallization kettle for silver nitrate production, kettle cover including the cauldron body and cauldron body top, the kettle cover top is equipped with the feed inlet, cauldron body bottom is equipped with the discharge gate, cauldron body outer wall is equipped with double-layered shell formula water-cooling mechanism, the internal agitating unit that is equipped with of cauldron, agitating unit includes the vertical cavity (mixing) shaft that just rotates the setting, the (mixing) shaft top is stretched out the kettle cover and is connected with drive arrangement, and top end department opening sets up and is connected with high-pressure gas pitcher, radially be equipped with a plurality of cavity stirring rakes on the (mixing) shaft outer wall, the stirring rake is the crisscross distribution of axial interval in the (mixing) shaft both sides, and all with the inside intercommunication of (mixing) shaft, the stirring rake is. The utility model relates to a rationally, make the material mixing more even with a plurality of stirring rakes of the crisscross distribution of axial interval to strengthen crystallization effect to spray high-pressure gas to the internal wall of cauldron with the nozzle, can effectively reduce crystal wall built-up degree, improve crystallization efficiency and crystal output.

Description

A crystallization kettle for silver nitrate production

Technical Field

The utility model belongs to the technical field of silver nitrate production, concretely relates to crystallization kettle for silver nitrate production.

Background

Silver nitrate is a colorless crystal, readily soluble in water, commonly used in photographic emulsions, silver plating, mirror making, printing, medicine, hair dyeing, and testing for chloride, bromide, and iodide ions, and is also used in the electronics industry. Silver and nitric acid are generally adopted to react to prepare silver nitrate industrially, and the production process flow mainly comprises reaction, impurity removal, evaporative crystallization, centrifugal drying and the like. When evaporating and crystallizing, the water in the silver nitrate solution needs to be evaporated by heating or reducing pressure, and when the solution is concentrated until a crystalline film appears on the surface, the solution is sent to a crystallization kettle for cooling and crystallizing. Conventional crystallization kettle generally adopts frame or anchor formula stirring rake to stir the material, utilizes the rotation of cauldron body bottom material to drive cauldron body upper portion material and rotate together, and the stirring degree is not enough, has the inhomogeneous problem of material about the cauldron body, influences the crystallization effect, and makes the material cooling inhomogeneous, very easily appears the phenomenon of crystal wall built-up, not only influences the output of crystal, and has further hindered the cooling crystallization of material, is unfavorable for silver nitrate cooling crystallization.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a crystallization kettle for silver nitrate production makes the stirring of silver nitrate solution more even with a plurality of stirring rakes of axial interval staggered distribution, strengthens crystallization effect to spray high-pressure gas to cauldron internal wall at the stirring in-process with the nozzle, reduce the incidence of cauldron internal wall crystal, stir inequality, easily appear the crystal wall built-up and influence crystallization efficiency and output scheduling problem in order to solve current crystallization kettle.

In order to achieve the above object, the utility model adopts the following technical scheme: the utility model provides a crystallization kettle for silver nitrate production, includes the cauldron body and establishes the kettle cover at cauldron body top, and kettle cover top one end is equipped with the feed inlet, and cauldron body bottom is equipped with the discharge gate, and cauldron body outer wall is equipped with double-layered shell type water-cooling mechanism, and the internal agitating unit that is equipped with of cauldron, agitating unit includes that vertical and rotation establish the internal cavity (mixing) shaft at the cauldron, the (mixing) shaft top is stretched out the kettle cover and is connected with drive arrangement, (mixing) shaft top end department opening sets up and is connected with high-pressure gas tank, radially be equipped with a plurality of cavity stirring rakes on the (mixing) shaft outer wall, the stirring rake is the both sides of axial interval staggered distribution at the (mixing) shaft outer wall, and all communicates with the (mixing) shaft is inside, the one end that the.

Preferably, the driving device comprises a driving motor, a first chain wheel is fixedly arranged on an output shaft of the driving motor, a second chain wheel is fixedly arranged at the top end of the stirring shaft, and the first chain wheel is connected with the second chain wheel through a transmission chain.

Preferably, the high-pressure gas tank is connected with a gas pipeline through a valve, and the tail end of the gas pipeline is rotatably connected with the top end of the stirring shaft through a sealed gas inlet cover.

Preferably, a shaft sleeve is arranged between the top end of the stirring shaft and the kettle cover, the bottom end of the stirring shaft extends to the bottom of the kettle body, and a push type stirring paddle is arranged at the end head of the bottom end.

Preferably, the jacket type water cooling mechanism comprises a cooling water tank and a jacket sleeved on the outer wall of the kettle body, a water inlet is formed in one end of the bottom of the jacket, the water inlet is connected with a water outlet of the cooling water tank through a first water pump, a water outlet is formed in the side wall, away from the water inlet, of the top of the jacket, and the water outlet is connected with the water inlet of the cooling water tank through a second water pump.

Preferably, a semiconductor refrigerating sheet is arranged in the jacket and clings to the outer wall of the kettle body.

Preferably, be provided with temperature sensor on the cauldron body top inside wall, the symmetry is provided with a plurality of arcs on the cauldron body both sides inner wall of temperature sensor below and keeps off and flow the board, be provided with the controller on the external wall of cauldron, temperature sensor and semiconductor refrigeration piece all with the controller electricity is connected.

Preferably, the top of the kettle cover is also provided with an air outlet and a manhole.

The utility model has the advantages that: the utility model relates to a rationally, compact structure, a plurality of stirring rakes through the crisscross distribution of axial interval make the stirring of silver nitrate solution more even, reinforcing crystallization effect, utilize the nozzle to carry out high-pressure gas injection to cauldron internal wall constantly at the stirring in-process simultaneously, reduce the adhesion rate of silver nitrate crystal on cauldron internal wall, the output of silver nitrate crystal is improved, and can avoid influencing the effect of cooling water to the heat dissipation cooling of silver nitrate solution because of the crystal wall built-up, it is more even effective to make the cooling of silver nitrate solution, improve the cooling crystallization efficiency of silver nitrate, be favorable to improving holistic production efficiency of silver nitrate and production quality. Meanwhile, the jacket type water cooling mechanism utilizes the first water pump and the second water pump to enable cooling water to circularly flow in the cooling water tank and the jacket, so that the heat exchange efficiency of the cooling water with the silver nitrate solution can be improved, the cooling effect is enhanced, the water resource can be fully utilized, and the production cost is saved. In addition, still be provided with the semiconductor refrigeration piece in the jacket, can further reduce the internal temperature of cauldron, be convenient for control temperature variation, make crystallization effect better, efficiency is higher.

Drawings

Fig. 1 is a schematic view of the structure of the present invention.

Reference numbers in the figures: the device comprises a high-pressure water tank 1, a valve 2, a gas pipeline 3, a sealed gas inlet cover 4, a driving motor 5, a first chain wheel 6, a second chain wheel 7, a feed inlet 8, a gas outlet 9, a shaft sleeve 10, a manhole 11, a kettle cover 12, a kettle body 13, a water outlet 14, a temperature sensor 15, a controller 16, an arc flow baffle 17, a second water pump 18, a stirring shaft 19, a stirring paddle 20, a nozzle 21, a jacket 22, a semiconductor refrigerating sheet 23, a propulsion type stirring paddle 24, a discharge port 25, a water inlet 26, a first water pump 27 and a cooling water tank 28.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

as shown in figure 1, the crystallizing kettle for silver nitrate production comprises a kettle body 13 and a kettle cover 12 arranged at the top of the kettle body 13. One end of the top of the kettle cover 12 is provided with a feeding hole 8, and the bottom of the kettle body 13 is provided with a discharging hole 25 for feeding and discharging respectively. The outer wall of the kettle body 13 is provided with a jacket type water cooling mechanism for cooling. The internal agitating unit that is equipped with of cauldron, it includes vertical and rotates the cavity (mixing) shaft 19 of establishing in the cauldron body 13, and (mixing) shaft 19 top stretches out kettle cover 12 and is connected with drive arrangement for the power that (mixing) shaft 19 accessible drive arrangement provided rotates, realizes the stirring to the material. The top end department opening of (mixing) shaft 19 sets up and is connected with high-pressure gas jar 1, and concrete connection mode is: the high-pressure gas tank 1 is connected with a gas transmission pipeline 3 through a valve 2, and the tail end of the gas transmission pipeline 3 is rotatably connected with the top end of the stirring shaft 19 through a sealed gas inlet cover 4. So that the high-pressure gas tank 1 can feed high-pressure gas into the stirring shaft 19 without hindering the rotational movement of the stirring shaft 19. Radially being equipped with a plurality of cavity stirring rakes 20 on the outer wall of (mixing) shaft 19, stirring rake 20 is the crisscross both sides of distributing at the (mixing) shaft 19 outer wall of axial interval, can obtain more evenly to the stirring of silver nitrate solution, reinforcing crystallization effect. The stirring paddles 20 are communicated with the inside of the stirring shaft 19, one ends of the stirring paddles 20, which are far away from the stirring shaft 19, are communicated with nozzles 21, the nozzles 21 are all obliquely and downwards arranged towards the inner side wall of the corresponding kettle body 13, so that high-pressure gas entering the stirring shaft 19 can be dispersed into the stirring paddles 20, the high-pressure gas can be obliquely and downwards sprayed out towards the inner side wall of the kettle body 13 through the nozzles 21 while the stirring paddles 20 uniformly stir the silver nitrate solution along with the rotation of the stirring shaft 19, crystals attached to the inner side wall of the kettle body 1 are removed and flow downwards, the crystals can be conveniently collected and discharged, the attachment of the silver nitrate crystals to the inner wall of the kettle body 13 can be effectively reduced, the yield of the silver nitrate crystals can be improved, the effect of cooling water on the heat dissipation and cooling of the silver nitrate solution due to the wall hanging of the crystals can be avoided, the, is beneficial to improving the overall production efficiency and the production quality of the silver nitrate. In addition, after crystallization kettle used a period of time, the accessible was with (mixing) shaft 19 top switching on high-pressure water tank, through nozzle 21 to the washing of the internal wall of cauldron of spraying water on the cauldron body 13, made crystallization kettle's cleaning operation more convenient.

In this embodiment, the driving device is driven by a chain wheel so as not to affect the connection of the stirring shaft 19 and the high-pressure gas tank. The driving device comprises a driving motor 5, a first chain wheel 6 is fixedly arranged on an output shaft of the driving motor 5, a second chain wheel 7 is fixedly arranged at the top end of the stirring shaft 19, and the first chain wheel 6 and the second chain wheel 7 are connected through a transmission chain, so that power can be provided by the driving motor 5 when the stirring device is used, the stirring shaft 19 is driven to rotate through chain transmission, and the stirring paddle 20 is driven to stir materials.

In this embodiment, a shaft sleeve 10 is disposed between the top end of the stirring shaft 19 and the kettle cover 12 to reduce the wear of the kettle cover 12 when the stirring shaft 19 rotates, and ensure the stable rotation of the stirring shaft 19. The bottom of (mixing) shaft 19 extends to the bottom of the cauldron body 13 to guarantee to stir material completely, even, and be provided with impulse type stirring rake 24 in its bottom end department, not only have the stirring function equally, still make things convenient for the discharge of silver nitrate crystal, the ejection of compact of being convenient for. The top of the kettle cover 12 is also provided with an exhaust port 9 and a manhole 11, the exhaust port 9 is used for exhausting gas, so that the stability of the air pressure in the kettle body 13 is ensured, and the exhaust port needs to be externally connected with an exhaust pipeline when in use due to certain toxicity of silver nitrate, so that the exhausted gas is transferred, and the condition that the exhausted gas carries trace silver nitrate to harm workers is avoided; the manhole 11 is convenient for the installation, maintenance and safety inspection of the crystallization kettle.

In this embodiment, the jacketed water cooling mechanism includes a cooling water tank 28 and a jacket 22 sleeved on the outer wall of the kettle body 13, a water inlet 26 is provided at one end of the bottom of the jacket 22, the water inlet 26 is connected to a water outlet of the cooling water tank 28 through a first water pump 27, a water outlet 14 is provided on a side wall of the top of the jacket 22 away from the water inlet 26, and the water outlet 14 is connected to a water inlet of the cooling water tank 28 through a second water pump 18. By utilizing the first water pump 27 and the second water pump 18, cooling water can circularly flow in the cooling water tank 28 and the jacket 22, so that the heat exchange efficiency with a silver nitrate solution can be improved, the cooling effect is enhanced, water resources can be fully utilized, and the production cost is saved. The outer wall of hugging closely the cauldron body 13 in the cover 22 still is provided with semiconductor refrigeration piece 23, be provided with temperature sensor 15 on the inside wall of the top of the cauldron body 13, be provided with controller 16 on the outer wall of the cauldron body 13, temperature sensor 15 and semiconductor refrigeration piece 23 all are connected with controller 16 electricity, make when cooling water carries out the cooling, can monitor the temperature variation in the cauldron body 13 at any time through temperature sensor 15, and transmit temperature signal for controller 16, but the break-make of the circuit of controller 16 automatic control semiconductor refrigeration piece 23, further improve the refrigerated effect of cooling through the cooling of semiconductor refrigeration piece 23, make the efficiency of silver nitrate crystallization faster, the effect is better. Still the symmetry is provided with a plurality of arcs on the both sides inner wall of the cauldron body 13 of temperature sensor 15 below and keeps off a class 17, can play the effect of direction to the flow of material, improves the stirring effect of material indirectly, makes the material stirring more even.

The utility model discloses a use method: the utility model discloses when using, earlier send into the silver nitrate solution after last process is concentrated through feed inlet 8 on the kettle cover 12 the cauldron internal 13, restart driving motor 5, under the chain drive of first sprocket 6 and second sprocket 7, it is rotatory to drive (mixing) shaft 19, stirs the silver nitrate solution. At the same time, valve 2 on gas line 3 is opened and first and

second water pumps

27, 18 are started. After the valve 2 is opened, the high-pressure gas provided by the high-pressure gas tank 1 is dispersed to each stirring paddle 20 through the stirring shaft 19, and when the stirring paddles 20 rotate along with the stirring shaft 19 to uniformly stir the silver nitrate solution, the high-pressure gas is sprayed out of the inner side wall of the kettle body 13 through the nozzles 21 which are obliquely arranged, so that the adhesion of silver nitrate crystals on the inner wall of the kettle body 13 can be effectively reduced, and the yield is improved. After the first water pump 27 and the second water pump 18 are started, cooling water in the cooling water tank 28 can enter the jacket 22 through the water inlet 26 at the bottom of the jacket 22, and flows back to the cooling water tank 28 from the water outlet 14 at the top of the jacket 22 after heat exchange and cooling are carried out on the kettle body 13, so that the cooling water circularly flows in the cooling water tank 28 and the jacket 22, the cooling effect can be enhanced, the silver nitrate crystallization efficiency is improved, the water resource can be fully utilized, and the production cost is saved. When the cooling water carries out the cooling, can monitor the temperature variation in the cauldron body 13 at any time through temperature sensor 15 on the internal wall of cauldron body 13 to give controller 16 with temperature signal transmission, by the break-make of controller 16 automatic control semiconductor refrigeration piece 23 circuit, further improve the refrigerated effect of cooling through the cooling of semiconductor refrigeration piece 23, make the efficiency of silver nitrate crystallization faster, the crystallization is accomplished the back crystal and is followed discharge gate 25 discharge can.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides a crystallization kettle for silver nitrate production, includes the cauldron body and establishes the kettle cover at cauldron body top, and kettle cover top one end is equipped with the feed inlet, and cauldron body bottom is equipped with the discharge gate, and cauldron external wall is equipped with double-layered shell type water-cooling mechanism, and the internal agitating unit that is equipped with of cauldron, a serial communication port, agitating unit includes vertical and rotates the cavity (mixing) shaft of establishing in the cauldron internal, the (mixing) shaft top is stretched out the kettle cover and is connected with drive arrangement, (mixing) shaft top end department opening sets up and is connected with high-pressure gas tank, radially be equipped with a plurality of cavity stirring rakes on the (mixing) shaft outer wall, the stirring rake is the both sides of axial interval staggered distribution at the (mixing) shaft outer wall, and all communicates with the (mixing) shaft is inside, the one end that the.

2. The crystallization kettle for silver nitrate production according to claim 1, wherein the driving device comprises a driving motor, a first chain wheel is fixedly arranged on an output shaft of the driving motor, a second chain wheel is fixedly arranged at the top end of the stirring shaft, and the first chain wheel and the second chain wheel are connected through a transmission chain.

3. The crystallization kettle for silver nitrate production according to claim 1, wherein the high-pressure gas tank is connected with a gas transmission pipeline through a valve, and the tail end of the gas transmission pipeline is rotatably connected with the top end of the stirring shaft through a sealed gas inlet hood.

4. The crystallization kettle for silver nitrate production according to claim 1, 2 or 3, wherein a shaft sleeve is arranged between the top end of the stirring shaft and the kettle cover, the bottom end of the stirring shaft extends to the bottom of the kettle body, and a pushing type stirring paddle is arranged at the end head of the bottom end.

5. The crystallization kettle for silver nitrate production according to claim 1, wherein the jacketed water cooling mechanism comprises a cooling water tank and a jacket sleeved on the outer wall of the kettle body, a water inlet is formed in one end of the bottom of the jacket, the water inlet is connected with a water outlet of the cooling water tank through a first water pump, a water outlet is formed in the side wall of the top of the jacket, which is far away from the water inlet, and the water outlet is connected with the water inlet of the cooling water tank through a second water pump.

6. The crystallization kettle for silver nitrate production according to claim 5, wherein a semiconductor refrigeration sheet is arranged in the jacket and clings to the outer wall of the kettle body.

7. The crystallization kettle for silver nitrate production according to claim 1, wherein a temperature sensor is arranged on the inner side wall of the top of the kettle body, a plurality of arc-shaped flow baffles are symmetrically arranged on the inner walls of two sides of the kettle body below the temperature sensor, a controller is arranged on the outer wall of the kettle body, and the temperature sensor and the semiconductor refrigeration piece are electrically connected with the controller.

8. The crystallization kettle for silver nitrate production according to claim 1, wherein the top of the kettle cover is further provided with a gas outlet and a manhole.