Sodium silicate refining and concentrating equipment

Abstract

The utility model discloses sodium silicate refining and concentrating equipment, which relates to the technical field of sodium silicate production and comprises a tank body, a feed pipe, a liquid inlet pipe and a steam discharge pipe are mounted on the outer circumferential surface of the tank body in a communicated manner, a discharge pipe is mounted at the bottom of the tank body in a communicated manner, and a heating sleeve is further sleeved on the outer circumferential surface of the tank body. A rotating shaft is rotationally installed in the center of an inner cavity of the tank body in the vertical direction, a plurality of stirring rods are arranged on the outer circumferential face of the rotating shaft, the stirring rod located on the lowermost side of the stirring rods is fixedly installed on the rotating shaft, and the remaining stirring rods are evenly assembled on the rotating shaft in a sliding mode in the axial direction of the rotating shaft; along with the descending of the liquid level, the rest stirring rods synchronously move downwards to the position below the liquid level. By arranging the stirring rod, the rotating shaft and the cross-shaped connecting rod, the position of the stirring rod can be synchronously adjusted along with descending of the liquid level, the stirring force is automatically increased according to the liquid viscosity, and the working efficiency, the use flexibility and the product quality of the concentration equipment are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a soda ash production technical field, concretely relates to a soda ash refining and concentrating equipment. BACKGROUND

[0002] Soda ash is an important raw material widely used in chemical industry, construction and light industry, etc. Its production process usually includes melting, refining, concentrating and other processes. In the concentration process of soda ash, the liquid needs to be uniformly heated by stirring equipment to accelerate water evaporation and improve concentration efficiency. However, the stirring equipment used in the prior art has the following problems:

[0003] On the one hand, the stirring blade of the traditional stirring equipment is fixed at a certain height inside the equipment and cannot be adjusted according to the change of liquid level. As the concentration operation proceeds, the liquid level of soda ash gradually decreases, causing the part of the stirring blade above the liquid surface to no longer participate in the stirring operation. This design not only wastes equipment resources, but also reduces the stirring efficiency, making the liquid concentration process unable to achieve the desired effect.

[0004] On the other hand, the viscosity of soda ash liquid increases gradually during the concentration process as water evaporates, and the fluidity of the liquid decreases significantly. In this case, the stirring blade of fixed height cannot provide sufficient stirring intensity, causing uneven liquid stirring and easy local overheating or sticking, thereby affecting the concentration quality.

[0005] In summary, the stirring equipment in the prior art cannot be flexibly adjusted according to the change of liquid level and the increase of liquid concentration, which not only limits the improvement of stirring efficiency, but also may cause the decrease of concentration quality. Based on this, we propose a soda ash refining and concentrating equipment. UTILITY MODEL CONTENT

[0006] In order to solve the above technical problems existing in the prior art, the utility model provides a soda ash refining and concentrating equipment.

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a soda ash refining and concentrating equipment, comprising a tank body, an outer circumferential surface of the tank body is connected and installed with a feed pipe, a liquid inlet pipe and a steam discharge pipe, a bottom of the tank body is connected and installed with a discharge pipe, the outer circumferential surface of the tank body is further sleeved with a heating jacket, a rotating shaft is rotatably installed in the center of the inner cavity of the tank body along the vertical direction, a plurality of stirring rods are arranged on the outer circumferential surface of the rotating shaft, among the plurality of stirring rods, the lowermost stirring rod is fixedly installed on the rotating shaft, and the remaining stirring rods are uniformly and slidingly assembled on the rotating shaft along the axial direction thereof; as the liquid level drops, the remaining stirring rods move downward to a position below the liquid level.

[0008] Preferably, the outer circumferential surface of the rotating shaft is provided with a limiting rib along the axial direction thereof, and the stirring rod is sleeved on the rotating shaft through a sleeve, and a groove matched with the limiting rib is formed in the inner wall of the sleeve.

[0009] Preferably, a cross connecting rod is arranged between two adjacent stirring rods in the up-down direction, the cross connecting rod is composed of two connecting rods intersecting with each other, one end of the connecting rod is rotatably connected with the root of the stirring rod, and the other end of the connecting rod is rotatably connected with a sliding sleeve which is sleeved on the outer circumferential surface of the stirring rod.

[0010] Preferably, a piston is slidably arranged in the tank body and located above the stirring rods, the piston divides the inner cavity of the tank body into two independent sealed chambers, i.e., an upper steam chamber and a lower concentration chamber, the lower end of the piston is connected with the uppermost stirring rod through a connecting rod, and the upper end of the piston is provided with a gas hole penetrating through the upper end and the lower end, a second spring is arranged in the gas hole along the axial direction thereof, the upper end of the second spring is provided with a sealing plate, and the diameter of the sealing plate is greater than the diameter of the gas hole.

[0011] Preferably, the upper steam chamber is communicated with a steam discharge pipe, and a first spring is arranged between the upper end of the piston and the top wall of the inner cavity of the tank body.

[0012] Preferably, the stirring rod comprises a fixed portion, one end of the fixed portion is fixedly connected with the sleeve, the other end of the fixed portion is provided with a rotating portion, the outer circumferential surface of the rotating portion is fixedly provided with a paddle, the paddle is arranged in a horizontal direction at the initial stage of the concentration operation, and the paddle is gradually rotated towards the vertical direction along with the concentration operation.

[0013] Preferably, the rotating portion is in a cylindrical structure, an arc-shaped guide rail is arranged on the outer circumferential surface of the rotating portion, and an arc-shaped guide groove matched with the arc-shaped guide rail is formed in the inner wall of the sliding sleeve, and the sliding sleeve is slidably arranged on the rotating portion.

[0014] Compared with the prior art, the present application provides a soda ash refining and concentrating device, which has the following beneficial effects:

[0015] (1) In the present application, part of the stirring rods are slidably arranged on the rotating shaft, and along with the concentration operation of the soda ash, the stirring rods located above the liquid surface are synchronously moved downwards below the liquid surface, so that the stirring rods can synchronously descend along with the liquid level, are always in the effective stirring area of the liquid, the idle rotation above the liquid surface is avoided, the stirring efficiency is improved, in addition, the dynamic adjustment of the positions of the stirring rods can avoid the problem of insufficient local stirring, the liquid can be kept in a uniform mixing state during the concentration process, and the refining effect is ensured.

[0016] (2) The water vapor generated in the soda ash concentration operation is unidirectionally transported to the upper steam chamber, the piston is driven to move downward by the gas pressure difference between the upper and lower sides of the piston, and then the linear motion of the stirring rod on the rotating shaft is driven, which not only saves the manufacturing cost, but also scrapes off the crystalline substances adhered to the inner wall of the tank during the movement of the piston.

[0017] (3) The paddle is arranged in a horizontal direction at the initial stage of the concentration operation, which reduces the contact area of the paddle with the liquid, facilitates the high-speed rotation of the stirring rod, and improves the stirring efficiency; with the progress of the concentration operation, the paddle rotates towards the vertical direction, so that the stirring rod can automatically increase the stirring intensity according to the real-time change of the liquid viscosity, ensures that the high-viscosity liquid can also be fully stirred, and improves the concentration quality.

[0018] (4) By dynamically adjusting the position and intensity of the stirring rod, unnecessary power consumption is reduced, energy utilization is optimized, and equipment operation cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, together with the embodiments of the present application, for explaining the present application, and do not constitute a limitation on the present application, in the drawings:

[0020] Figure 1 is a cross-sectional structure schematic view of the entire soda ash refining and concentrating equipment in the embodiment;

[0021] Figure 2 is a structure schematic view of the entire soda ash refining and concentrating equipment in the embodiment;

[0022] Figure 3 is an assembly structure schematic view of the stirring rod and the rotating shaft in the embodiment;

[0023] Figure 4 is a structure schematic view of the stirring rod in the embodiment;

[0024] Figure 5 is a structure schematic view of the sliding sleeve in the embodiment;

[0025] Figure 6 is an assembly schematic view of the piston and the tank in the embodiment;

[0026] Figure 7 is a structure schematic view of the air hole in the embodiment.

[0027] In the figure: 1, tank body; 2, feed pipe; 3, liquid inlet pipe; 4, steam discharge pipe; 5, discharge pipe; 6, heating jacket; 7, rotating shaft; 8, stirring rod; 81, fixed part; 82, rotating part; 83, paddle; 84, arc-shaped guide rail; 9, piston; 91, connecting rod; 92, sliding sleeve; 921, arc-shaped guide groove; 10, first spring; 11, connecting rod; 12, air hole; 13, second spring; 14, sealing plate. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0029] The present embodiment provides a soda ash refining and concentrating equipment, which comprises a tank body, a feed pipe, a liquid inlet pipe, a steam discharge pipe, a discharge pipe, a heating jacket, a rotating shaft, a stirring rod, a piston, a connecting rod, a sliding sleeve, a first spring, a connecting rod, an air hole, a second spring and a sealing plate. Figures 1 to 7As shown, it comprises a tank body 1, the outer circumferential surface of the tank body 1 is connected and installed with a feeding pipe 2, a liquid inlet pipe 3 and a steam discharge pipe 4, the bottom of the tank body 1 is connected and installed with a discharging pipe 5, valves are installed on the feeding pipe 2, the liquid inlet pipe 3, the steam discharge pipe 4 and the discharging pipe 5, a heating jacket 6 is further sleeved on the outer circumferential surface of the tank body 1, a rotating shaft 7 is rotatably installed in the center of the inner cavity of the tank body 1 along the vertical direction, a plurality of stirring rods 8 are arranged on the outer circumferential surface of the rotating shaft 7, in this embodiment, a motor is fixedly installed at the upper end of the tank body 1, the motor shaft of the motor penetrates the upper wall of the tank body 1 and is fixedly connected with the upper end of the rotating shaft 7; when the soda ash refining and concentration operation is carried out, the appropriate amount of soda ash raw material is transported into the inner cavity of the tank body 1 through the feeding pipe 2, and then the appropriate amount of water is transported into the inner cavity of the tank body 1 through the liquid inlet pipe 3, and then the tank body 1 is heated through the heating jacket 6 to make the mixed solution of soda ash and water perform the concentration operation, in this process, the motor is started synchronously to drive the stirring rod 8 to rotate, so that the mixed solution of soda ash is fully mixed and uniform, and in the concentration process, the viscosity of the mixed solution of soda ash gradually increases with the evaporation of water, not only the fluidity of the liquid is significantly reduced, but also the liquid level continuously decreases, which causes the stirring rod 8 located above the liquid level to no longer participate in the stirring operation, resulting in the reduction of the stirring efficiency, therefore, in this embodiment, among the plurality of stirring rods 8, the lowermost stirring rod 8 is fixedly installed on the rotating shaft 7, and the remaining stirring rods 8 are uniformly and slidingly assembled on the rotating shaft 7 along the axial direction of the rotating shaft 7, with the decrease of the liquid level, the remaining stirring rods 8 move downward synchronously and adjust the stirring position, so that all the stirring rods 8 are located below the liquid level, which improves the stirring efficiency and ensures that the liquid concentration process achieves the ideal effect. It should be noted that the stirring rod 8 can rotate with the rotating shaft 7 when it slides along the axial direction of the rotating shaft 7, in this embodiment, a limiting rib is arranged on the outer circumferential surface of the rotating shaft 7 along the axial direction, and the stirring rod 8 is slidingly sleeved on the rotating shaft 7 through a sleeve, and a groove matched with the limiting rib is formed in the inner wall of the sleeve.

[0030] Specifically, a cross connecting rod is arranged between two adjacent stirring rods 8 in the up-down direction, the cross connecting rod is composed of two cross connecting rods 91, one end of the cross connecting rod 91 is rotatably connected with the root of the stirring rod 8, and the other end of the cross connecting rod 91 is rotatably connected with a sliding sleeve 92, and the sliding sleeve 92 is slidingly sleeved on the outer circumferential surface of the stirring rod 8; further comprising a linear driving device, and the output end of the linear driving device is connected with the uppermost stirring rod 8. When the linear driving device is started, the output end of the linear driving device is elongated and drives the uppermost stirring rod 8 to move downward.

[0031] In order to reduce manufacturing cost and reduce the difficulty of subsequent maintenance, the hot steam generated during the soda ash concentration operation is used to drive the movement of the stirring rod 8 along the axis of the rotating shaft 7 in the embodiment. Specifically, the inside of the tank body 1 is slidingly installed with a piston 9, which is located above the stirring rod 8. The piston 9 separates the inner cavity of the tank body 1 into two independent sealed chambers, i.e. an upper steam chamber and a lower concentration chamber. The lower end of the piston 9 is connected to the uppermost stirring rod 8 through a connecting rod 11. The upper end of the piston 9 is provided with a gas hole 12 extending through the piston 9. A second spring 13 is installed in the gas hole 12 along the axial direction of the gas hole 12. The upper end of the second spring 13 is installed with a sealing plate 14, and the diameter of the sealing plate 14 is larger than that of the gas hole 12. During the soda ash solution concentration operation, the water is heated and evaporated into water vapor. The water vapor is collected in the lower concentration chamber, so that the gas pressure in the lower concentration chamber continuously increases and exerts an upward pushing force on the sealing plate 14. When the upward pushing force is greater than the pulling force of the second spring 13, the sealing plate 14 is pushed upward, and the water vapor in the lower concentration chamber enters the upper steam chamber. As the volume of the water vapor in the upper steam chamber continuously increases, the gas pressure in the upper steam chamber is greater than that in the lower concentration chamber, and a downward pressure is generated on both sides of the piston 9, which drives the piston 9 to move downward. The piston 9 drives the uppermost stirring rod 8 to move downward through the connecting rod 11. The uppermost stirring rod 8 drives the other stirring rods 8 to move downward synchronously through the cross connecting rod.

[0032] The upper steam chamber is communicated with the steam discharge pipe 4. After the soda ash concentration operation is completed, the valve on the steam discharge pipe 4 is opened to discharge the water vapor. In order to reset the piston 9, a first spring 10 is installed between the upper end of the piston 9 and the top wall of the inner cavity of the tank body 1. The first spring 10 exerts a pulling force on the piston 9 to reset it. During the soda ash concentration operation, the inner wall of the tank body 1 is adhered with crystalline substances generated during the concentration, which affects the heating effect of the heating jacket 6. The linear movement of the piston 9 in the axial direction of the tank body 1 can scrape off the crystalline substances, so as to keep the inner wall of the tank body 1 clean.

[0033] During the concentration of the soda ash solution, the viscosity of the liquid gradually increases with the evaporation of water, and the fluidity of the liquid significantly decreases. In order to improve the stirring effect, the stirring intensity needs to be increased. In the embodiment, the stirring intensity is increased by increasing the contact area between the stirring rod 8 and the liquid. Specifically, the stirring rod 8 includes a fixed part 81, one end of which is fixedly connected with the sleeve, and the other end of which is installed with a rotating part 82. The paddle 83 is fixedly installed on the outer circumferential surface of the rotating part 82, so as to increase the contact area with the liquid and further increase the stirring intensity.

[0034] In the initial stage of the concentration operation, the water content in the soda ash mixed solution is relatively high, if the contact area between the stirring rod 8 and the liquid is increased, the reaction force received by the stirring rod 8 will also be increased, and the torque for driving the stirring rod 8 to rotate will also need to be increased, but the increase of the output torque of the motor will lead to the decrease of the rotating speed, and the stirring efficiency is reduced, therefore, in the embodiment, the rotating part 82 and the fixed part 81 are rotationally connected, in the initial stage of the concentration operation, the paddle 83 is arranged in the horizontal direction, the contact area between the paddle 83 and the liquid is reduced, with the concentration operation, the paddle 83 is gradually rotated towards the vertical direction, the contact area with the liquid is increased, and the stirring intensity is improved.

[0035] On the basis of the above scheme, in the embodiment, the linear motion of the stirring rod 8 is utilized to drive the rotation of the paddle 83, specifically, the rotating part 82 is in a cylindrical structure, the arc-shaped guide rail 84 is installed on the outer circumferential surface of the rotating part 82, the inner wall of the sliding sleeve 92 is provided with the arc-shaped guide groove 921 matched with the arc-shaped guide rail 84, and the sliding sleeve 92 is slidingly assembled on the rotating part 82. When the distance between the upper and lower adjacent two stirring rods 8 is reduced, the sliding sleeve 92 moves outward along the rotating part 82, and the linear motion of the sliding sleeve 92 is converted into the rotating motion of the rotating part 82 through the arc-shaped guide groove 921 and the arc-shaped guide rail 84, so that the paddle 83 is rotated from the horizontal direction to the vertical direction.

[0036] In the description of the utility model, the terms "first", "second", "another", "yet another" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0037] In the description of the utility model, it needs to be explained that, unless otherwise specifically specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more than two.

[0038] Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the utility model, and the scope of the utility model is defined by the claims and their equivalents.

Claims

1. A sodium silicate refining and concentration device, comprising a tank (1), wherein a feed pipe (2), a liquid inlet pipe (3), and a steam discharge pipe (4) are connected and installed on the outer circumference of the tank (1), and a discharge pipe (5) is connected and installed at the bottom of the tank (1). A heating sleeve (6) is also fitted on the outer circumference of the tank (1). A rotating shaft (7) is installed vertically at the center of the inner cavity of the tank (1), and a plurality of stirring rods (8) are arranged on the outer circumference of the rotating shaft (7). The device is characterized in that: Among the several stirring rods (8), the lowermost stirring rod (8) is fixedly installed on the rotating shaft (7), and the remaining stirring rods (8) are uniformly and slidingly assembled on the rotating shaft (7) along the axial direction of the rotating shaft (7); as the liquid level drops, the remaining stirring rods (8) move downward to a position below the liquid level.

2. A caustic soda refining concentration plant according to claim 1, characterized in that: The outer circumferential surface of the rotating shaft (7) is provided with a limiting rib in the axial direction, and the stirring rod (8) is slidingly sleeved on the rotating shaft (7) through a sleeve, and a groove matched with the limiting rib is formed in the inner wall of the sleeve.

3. A caustic soda refining concentration plant according to claim 2, characterized in that: Cross connecting rods are arranged between the upper and lower adjacent two stirring rods (8), and the cross connecting rods are composed of two cross connecting rods (91) rotatingly connected, one end of the cross connecting rod (91) is rotatably connected with the root of the stirring rod (8), and the other end of the cross connecting rod (91) is rotatably connected with a sliding sleeve (92), and the sliding sleeve (92) is slidingly sleeved on the outer circumferential surface of the stirring rod (8).

4. A caustic soda refining concentration plant according to claim 3, characterized in that: The inside of the tank body (1) is slidingly installed with a piston (9), the piston (9) is located above the stirring rod (8), the piston (9) divides the inner cavity of the tank body (1) into two independent sealed chambers, an upper steam chamber and a lower concentration chamber, the lower end of the piston (9) is connected with the uppermost stirring rod (8) through a connecting rod (11); the upper end of the piston (9) is provided with a gas hole (12) penetrating upward and downward, a second spring (13) is installed in the gas hole (12) in the axial direction, the upper end of the second spring (13) is installed with a sealing plate (14), and the diameter of the sealing plate (14) is greater than that of the gas hole (12).

5. A caustic soda refining concentration plant according to claim 4, characterized in that: The upper steam chamber is communicated with the steam discharge pipe (4); the first spring (10) is installed between the upper end of the piston (9) and the inner cavity top wall of the tank body (1).

6. A caustic soda refining concentration plant according to claim 3, characterized in that: The stirring rod (8) comprises a fixed part (81), one end of the fixed part (81) is fixedly connected with the sleeve, the other end of the fixed part (81) is connected with a rotating part (82), the outer circumferential surface of the rotating part (82) is fixedly installed with a paddle (83); at the initial stage of the concentration operation, the paddle (83) is arranged in a horizontal direction; as the concentration operation proceeds, the paddle (83) gradually rotates towards the vertical direction.

7. A caustic soda refining concentration plant according to claim 6, characterized in that: The rotating part (82) is in a cylindrical structure, the outer circumferential surface of the rotating part (82) is provided with an arc-shaped arc-shaped guide rail (84), and the inner wall of the sliding sleeve (92) is provided with an arc-shaped guide groove (921) matched with the arc-shaped guide rail (84), and the sliding sleeve (92) is slidingly assembled on the rotating part (82). The rotating part (82) is in a cylindrical structure, the outer circumferential surface of the rotating part (82) is provided with an arc-shaped arc-shaped guide rail (84), and the inner wall of the sliding sleeve (92) is provided with an arc-shaped guide groove (921) matched with the arc-shaped guide rail (84), and the sliding sleeve (92) is slidingly assembled on the rotating part (82).

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