Sodium carbonate dissolving device

Abstract

The utility model provides a sodium carbonate dissolving device which comprises a barrel body, a water inlet and a feed port are arranged on a top cover of the barrel body, a horizontally arranged partition plate is arranged inside the barrel body and divides the inside of the barrel body into an upper chamber and a lower chamber, a plurality of vertically through communicating holes are arranged on the partition plate, a liquid outlet is arranged on the side wall of the lower chamber, and the liquid outlet is communicated with the upper chamber and the lower chamber. The sodium carbonate dissolving device further comprises a stirring unit, the stirring unit comprises a motor and a stirring shaft, and an upper cavity stirring blade and a lower cavity stirring blade are arranged on the stirring shaft in the upper cavity and the stirring shaft in the lower cavity respectively. The device can realize three-dimensional circulating flow of the solution and improve the dissolving efficiency, so that the number of sodium carbonate dissolving devices is reduced, and the equipment cost is reduced; alkali blocks entering the pipeline can be reduced, pipeline blockage is prevented, and the production working condition is stabilized.

Description

Technical Field

[0001] The utility model relates to a soda ash dissolving device. Technical Background

[0002] In the soda ash production process, it is often necessary to dissolve the soda ash and then transport it to the required section. In the traditional soda ash dissolution device, a set of stirring is generally set in the dissolution barrel, and the dissolution is accelerated by stirring with paddles. The production system needs to prepare a soda ash solution with a mass concentration of W% ≥ 25%. In order to ensure the stability of the concentration, multiple dissolution barrels are usually required to be used in series. The alkali solution preparation process of the traditional device: first add a certain amount of water to the dissolution barrel, and then add a certain amount of soda ash. After stirring, it enters the next series dissolution barrel, and continues to add alkali and stir to dissolve. After the concentration reaches the requirement, it is pumped to the required section. Such a device has the following problems in actual use: 1) The agglomerated soda ash and the scar blocks falling from the barrel wall can easily enter the alkali solution delivery pipeline, block the pipeline, and affect the stability of the production conditions; 2) The dissolution efficiency is low, and multiple devices need to be connected in series, which occupies a large space and has high investment. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a soda ash dissolving device, which, compared with the traditional soda ash dissolving device, can prevent the soda blocks from clogging the pipeline and stabilize the working conditions. At the same time, it can realize the three-dimensional circulation flow of the solution, has high dissolution efficiency, and reduces the series connection of dissolution equipment.

[0004] The present invention provides a soda ash dissolving device, comprising a barrel body, a water inlet and a feed inlet are arranged on the barrel body top cover, and the barrel body is characterized in that a horizontally arranged partition is arranged inside the barrel body, dividing the barrel body inner part into an upper chamber and a lower chamber, and the partition is provided with a plurality of vertically penetrating communication holes, and the partition and the communication holes can prevent the alkali blocks from entering the lower chamber to prevent the pipeline from being blocked. A liquid outlet is arranged on the side wall of the lower chamber, and the soda ash dissolving device also includes a stirring unit, and the stirring unit includes a motor and a stirring shaft, the motor is arranged above the barrel body top cover, the upper end of the stirring shaft is connected to the motor, and the lower end vertically extends downward through the partition to the bottom of the barrel body, and is rotatably connected to a bearing seat arranged at the bottom of the barrel body, and the stirring shafts inside the upper chamber and the lower chamber are respectively provided with upper chamber stirring blades and lower chamber stirring blades.

[0005] As an improvement, the connecting holes are evenly spaced and distributed on the partition, the area of ​​each connecting hole is 0.01-0.04 m2, and the ratio of the sum of the areas of all the connecting holes to the area of ​​the partition is 1:50-200.

[0006] As an improvement, the stirring shaft is divided into three separable sections by a coupling to facilitate maintenance and replacement.

[0007] As an improvement, the upper chamber is provided with an annular upper chamber flow guide cover with upper and lower openings. The annular upper chamber flow guide cover is fixedly connected to the side wall of the upper chamber by a support rod. A certain gap is left between the lower end of the flow guide cover and the partition. The upper chamber stirring blade is arranged in the upper chamber flow guide cover. The above arrangement can make the solution circulate in a three-dimensional manner. The solution can not only circulate along the stirring direction of the blade, but also circulate vertically along the flow guide cover, thereby greatly improving the dissolution efficiency.

[0008] As a further improvement, a lower chamber flow guide cover is provided in the lower chamber, and the lower chamber flow guide cover has the same configuration as the upper chamber flow guide cover.

[0009] As a further improvement, the lower ends of the upper chamber flow guide cover and the lower chamber flow guide cover are in a trumpet shape, which can guide the solution to flow more smoothly from the gap at the lower end of the flow guide cover to the surroundings, thereby reducing vertical circulation resistance.

[0010] As an improvement, a connecting pipe is provided on the side wall of the lower chamber, and the connecting pipe extends obliquely upward, and the angle between the connecting pipe and the side wall of the chamber is ≤45°, so as to avoid solid clogging of the connecting pipe; the upper end of the connecting pipe is fixedly connected to a tee, and a blind plate is provided on the tee to facilitate disassembly, flushing and cleaning.

[0011] As an improvement, a remote level meter and a concentration meter are provided on the side wall of the lower chamber to enable real-time monitoring of the dissolution process.

[0012] The beneficial effects of the present invention are as follows:

[0013] Compared with the traditional soda ash dissolving device, the partition provided in the utility model divides the device into two dissolving chambers, which can isolate most of the undissolved soda ash and alkali scar from entering the lower chamber, reduce the solids entrained by the solution into the pipeline, and prevent pipeline blockage.

[0014] Compared with the traditional soda ash dissolving device, the guide cover arranged in the utility model can realize the three-dimensional circulation flow of the solution. The solution can not only circulate along the stirring direction of the paddle blades, but also circulate vertically along the guide cover, thereby greatly improving the dissolution efficiency. At the same time, the use of two sets of upper and lower stirring devices also accelerates the dissolution of soda ash. Efficient dissolution can reduce the number of soda ash dissolving devices, reduce space occupied, and reduce equipment investment.

[0015] The utility model provides a soda ash dissolving device which can be used in series through a connecting pipe. The connecting pipe has a large inclination angle to prevent the pipe from being blocked by the accumulation of alkali blocks. At the same time, a blind plate is arranged at the upper end to facilitate flushing and cleaning.

[0016] On the basis of the above scheme, the present invention can also make the following improvements:

[0017] 1. According to production needs, multiple partitions can be added and the dissolution chambers can be increased accordingly.

[0018] 2. The diameter of the stirring blade and the guide cover in the lower chamber can be appropriately shortened to reduce the power consumption of the motor.

[0019] 3. In addition to being used to prepare soda ash solutions, the utility model can also be used to prepare solutions of other similar substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0021] Figure 1 It is a front cross-sectional view of the utility model;

[0022] Figure 2 This is the AA top view.

[0023] In the figure: 1, motor, 2, water inlet, 3, stirring shaft, 4, support rod, 5, upper chamber guide cover, 6, upper chamber stirring blade, 7, partition, 8, barrel, 9, lower chamber guide cover, 10, lower chamber stirring blade, 11, concentration meter, 12, liquid outlet, 13, feed inlet, 14, connecting pipe, 15, remote liquid level meter, 16, connecting hole, 17, coupling DETAILED DESCRIPTION

[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a specific embodiment of the utility model, comprising a barrel body 8, a water inlet 2 and a feed inlet 13 are arranged on the top cover of the barrel body 8, a horizontal partition 7 is arranged inside the barrel body 8, and the inside of the barrel body 8 is divided into an upper chamber and a lower chamber, and a plurality of vertically penetrating communication holes 16 are arranged on the partition 7, so that the alkali block can be prevented from entering the lower chamber and the risk of pipeline blockage is reduced. A liquid outlet 12 is arranged on the side wall of the lower chamber. The soda ash dissolving device also includes a stirring unit, which includes a motor 1 and a stirring shaft 3. The motor 1 is arranged above the top cover of the barrel body 8. The upper end of the stirring shaft 3 is connected to the motor 1, and the lower end vertically extends downward through the partition 7 to the bottom of the barrel body 8, and is rotatably connected to the bearing seat at the bottom of the barrel body 8. An upper chamber stirring blade 6 and a lower chamber stirring blade 10 are respectively arranged on the stirring shaft 3 inside the upper chamber and the lower chamber. Double stirring can increase the dissolution rate of soda ash; the stirring shaft 3 is divided into three separable sections by a coupling 17. The setting of the coupling 17 can realize the rapid maintenance and replacement of the stirring unit components.

[0026] The connecting holes 16 are evenly distributed on the partition 7, the area of ​​each connecting hole 16 is 0.01-0.04 m2, and the ratio of the sum of the areas of all the connecting holes 16 to the area of ​​the partition 7 is 1:50-200.

[0027] The upper chamber is provided with an annular upper chamber flow guide hood 5 with upper and lower openings, the annular upper chamber flow guide hood 5 is fixedly connected to the side wall of the upper chamber through a support rod 4, a certain gap is left between the lower end of the flow guide hood 5 and the partition 7, and the upper chamber stirring blade 6 is arranged in the upper chamber flow guide hood 5. A lower chamber flow guide hood 9 is provided in the lower chamber, and the lower chamber flow guide hood 9 has the same setting as the upper chamber flow guide hood 5. The lower ends of the upper chamber flow guide hood 5 and the lower chamber flow guide hood 9 are in a trumpet shape. The above setting can make the alkali solution flow out from the gap at the lower end of the flow guide hood under the action of the stirring blade, forcing the alkali solution outside the flow guide hood to flow upward, and the alkali solution flowing upward exceeds the upper end of the flow guide hood and flows into the inside of the flow guide hood to complete the vertical circulation flow of the alkali solution, thereby realizing the three-dimensional circulation flow of the alkali solution. Flow enhancement can increase the collision force and probability between the solvent and the solute molecules, accelerate mass transfer and mixing, and greatly improve the dissolution efficiency.

[0028] A connecting pipe 14 is provided on the side wall of the lower chamber, and the connecting pipe 14 extends obliquely upward, and the angle between the connecting pipe 14 and the side wall of the chamber is ≤45°. The upper end of the connecting pipe 14 is fixedly connected to a tee, and a blind plate is provided on the tee. The connecting pipe can facilitate the series use of the soda ash dissolving device, and a smaller angle can reduce the adhesion of solids to the connecting pipe wall. The removable blind plate at the top can facilitate the quick cleaning of the connecting pipe.

[0029] The side wall of the lower chamber is provided with a remote level meter 15 and a concentration meter 11, which can realize real-time monitoring of the dissolution process, timely adjust the water-alkali ratio according to the detection data, reduce concentration fluctuations, and stabilize production.

[0030] The working process of the alkali solution device is as follows: after the motor 1 is started and the stirring system is running, water enters the barrel from the water inlet 2 through the pipe after being measured, and the frequency conversion alkali transport screw conveys the soda ash into the barrel through the feed port 13. The spiral motor frequency and the water flow signal are set in proportion to the loop adjustment. The water circulates in the barrel in three dimensions under the action of the upper chamber stirring blade 6, and the soda ash falls on the water surface of the upper chamber and moves with the water. Part of the soda ash dissolves in the water, and part of it circulates in three dimensions with the water flow under the action of the upper chamber stirring blade 6 and the upper chamber guide cover 5 and gradually dissolves. Some large particles and alkali scars formed later gradually sink to the bottom of the upper chamber under the action of gravity, and gradually gather to the edge of the partition 7 under the centrifugal force and gradually dissolve. The upper solution carries with it some soda ash and enters the lower chamber through the connecting hole 16 on the partition 7, and continues to circulate in a three-dimensional manner under the action of the lower chamber stirring blades 10 and the lower chamber flow guide cover 9. After the remote liquid level meter 15 detects that the liquid level has reached a predetermined height, the intake of water and soda ash is stopped. As the stirring continues, the concentration gradually increases. After the concentration meter 15 shows that the alkali solution concentration meets the standard, the intake of water and soda ash continues, and the qualified alkali solution is delivered through the liquid outlet 12.

[0031] According to the needs of production capacity or transformation site, by adding partitions, the upper and lower dissolution chambers are increased to multiple chambers, and the stirring blades and guide covers of each level of the lower chamber can be appropriately reduced according to needs, thereby reducing energy consumption. In addition to being used for preparing soda ash solutions, the utility model can also be used for preparing solutions of other similar substances such as raw salt and carbide slag.

Claims

1. A soda ash dissolving device, comprising a barrel (8), a top cover of the barrel (8) being provided with a water inlet (2) and a feed inlet (13), characterized in that: The barrel (8) is provided with a horizontally arranged partition (7) inside the barrel (8) to divide the barrel (8) into an upper chamber and a lower chamber. The partition (7) is provided with a plurality of vertically penetrating communicating holes (16). The side wall of the lower chamber is provided with a liquid outlet (12). The soda ash dissolving device further comprises a stirring unit, the stirring unit comprising a motor (1) and a stirring shaft (3). The motor (1) is arranged above the top cover of the barrel (8). The upper end of the stirring shaft (3) is connected to the motor (1), and the lower end thereof extends vertically downward through the partition (7) to the bottom of the barrel (8) and is rotatably connected to a bearing seat arranged at the bottom of the barrel (8). The stirring shaft (3) inside the upper chamber and the lower chamber is provided with an upper chamber stirring blade (6) and a lower chamber stirring blade (10), respectively.

2. The soda ash dissolving device according to claim 1, characterized in that: The communicating holes (16) are evenly spaced and distributed on the partition (7); the area of ​​each communicating hole (16) is 0.01-0.04 m2; and the ratio of the sum of the areas of all the communicating holes (16) to the area of ​​the partition (7) is 1:50-200.

3. The soda ash dissolving device according to claim 1, characterized in that: The stirring shaft (3) is divided into three separable sections by a coupling (17).

4. The soda ash dissolving device according to claim 1, characterized in that: An annular upper chamber flow guide cover (5) with upper and lower openings is provided in the upper chamber. The annular upper chamber flow guide cover (5) is fixedly connected to the side wall of the upper chamber via a support rod (4). A certain gap is left between the lower end of the flow guide cover (5) and the partition plate (7). The upper chamber stirring blade (6) is arranged in the upper chamber flow guide cover (5).

5. The soda ash dissolving device according to claim 4, characterized in that: A lower chamber flow guide cover (9) is provided in the lower chamber, and the lower chamber flow guide cover (9) has the same configuration as the upper chamber flow guide cover (5).

6. The soda ash dissolving device according to claim 5, characterized in that: The lower ends of the upper chamber flow guide cover (5) and the lower chamber flow guide cover (9) are in a trumpet shape.

7. The soda ash dissolving device according to claim 1, characterized in that: The side wall of the lower chamber is provided with a connecting pipe (14), the connecting pipe (14) extends obliquely upward, and the angle between the connecting pipe (14) and the side wall of the chamber is ≤45°. The upper end of the connecting pipe (14) is fixedly connected to a tee, and a blind plate is provided on the tee.

8. The soda ash dissolving device according to claim 1, characterized in that: A remote liquid level meter (15) and a concentration meter (11) are provided on the side wall of the lower chamber.

Images