Stirring device for sodium sesquicarbonate production

Abstract

The utility model discloses a stirring device for sodium sesquicarbonate production, which comprises a mixing tank, the top of the mixing tank is provided with a motor, the output end of the motor is in transmission connection with a stirring shaft, the stirring shaft extends into the mixing tank, the top of the mixing tank is provided with a hopper, the hopper is internally provided with a premixing device, and the premixing device comprises an L-shaped plate. A rotating block is arranged at the top of the mixing tank, the stirring shaft is in transmission connection with the rotating block through a transmission belt, a curved groove is formed in the side wall of the rotating block, a sliding rod is connected to the side wall of the bottom end of the vertical section of the L-shaped plate, and a sliding head of the sliding rod is inserted into the curved groove and is in sliding contact with the curved groove; the end, away from the vertical rod section, of the horizontal section of the L-shaped plate is connected with a movable rod. The outer wall of the movable rod is connected with a plurality of shifting pieces. Sodium carbonate and sodium bicarbonate are premixed before being dissolved, so that particulate matters of the sodium carbonate and the sodium bicarbonate are combined, solution concentration layering caused by different settling velocities during feeding is avoided, and the crystallization consistency of a finished product is improved.

Description

Technical Field

[0001] This utility model belongs to the field of chemical production equipment technology, specifically relating to a stirring device for the production of sodium sesquicarbonate. Background Technology

[0002] Sodium sesquicarbonate, also known as trisodium bicarbonate, is highly alkaline and can effectively remove oil stains and odors. Its cleaning power is stronger than that of common baking soda (sodium bicarbonate), so it is widely used in cleaning agents. Its production process includes raw material mixing, crystallization, dehydration and drying. Among them, the uniformity of the raw material mixing stage affects the purity and crystal quality of the final product and is a key control point in the production process.

[0003] In the production of sodium sesquicarbonate, sodium carbonate and sodium bicarbonate need to be dissolved in water in a specific ratio to form a mixed solution, which is then crystallized. Usually, the stirring equipment adopts a direct feeding method, that is, the solid sodium carbonate and sodium bicarbonate are poured into the dissolving tank at one time. Although this operation can achieve basic dissolution, due to the difference in material density and dissolution rate, it is easy to cause the solution to stratify or local supersaturation. That is, in reality, the density of sodium carbonate is greater than that of sodium bicarbonate, causing the sodium carbonate particles to settle first when poured, forming a high concentration area at the bottom. The stratification of solution concentration will lead to a concentration gradient between the upper and lower layers of the solution, which in turn affects the consistency of the finished product crystallization. Utility Model Content

[0004] To address the problems encountered in the background art, this application proposes a stirring device for the production of sodium sesquicarbonate. By premixing sodium carbonate and sodium bicarbonate before dissolving, the particles of the two are physically combined, avoiding stratification of solution concentration due to different settling rates during feeding, and improving the consistency of crystallization of the finished product.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A stirring device for producing sodium sesquicarbonate includes a mixing tank. A motor is installed on the top of the mixing tank, and the output end of the motor is connected to a stirring shaft that extends into the mixing tank. A hopper is provided on the top of the mixing tank, and a premixing device is provided inside the hopper. The premixing device includes an L-shaped plate that is inserted through the top of the mixing tank. A rotating block is provided on the top of the mixing tank. The stirring shaft is connected to the rotating block via a transmission belt. A curved groove is formed on the side wall of the rotating block. A sliding rod is connected to the side wall of the bottom end of the vertical section of the L-shaped plate. The sliding head of the sliding rod is inserted into the curved groove and slides in contact with the curved groove. A movable rod is connected to the end of the horizontal section of the L-shaped plate away from the vertical rod section. Multiple paddles are connected to the outer wall of the movable rod.

[0007] In one embodiment of this application, a flap valve is installed at the discharge port at the bottom of the hopper.

[0008] In one embodiment of this application, a guide cylinder is rotatably connected to the bottom of the hopper, a perforated rod is connected to the outer wall of the guide cylinder, an eccentric rod is connected to the bottom of the rotating block, and the eccentric rod is inserted into the elongated hole of the perforated rod.

[0009] In one embodiment of this application, the bottom end face of the movable rod is connected to a chassis.

[0010] In one embodiment of this application, the upper end of the movable rod is provided with a sleeve, and the sleeve is connected to the side wall of the hopper through a fixed rod.

[0011] In one embodiment of this application, the discharge port of the guide tube is a flat opening.

[0012] In one embodiment of this application, a discharge valve is provided at the bottom of the mixing tank, and a support leg is provided at the bottom of the mixing tank for lifting the mixing tank off the ground.

[0013] In summary, the technical solution proposed in this application includes the following beneficial technical effects: When the rotating block rotates, the curved groove follows the rotating block, causing the curved groove to drive the sliding rod to move up and down reciprocally, which in turn drives the movable rod at the other end of the L-shaped plate to drive the paddle to move up and down reciprocally in the hopper. This pre-mixes and stirs the sodium carbonate and sodium bicarbonate raw materials in the hopper, so that the two particles are physically combined, reducing the density difference and avoiding the solution concentration stratification caused by different settling speeds during feeding. In addition, the particles are in closer contact after mixing, so that the release of sodium carbonate and sodium bicarbonate ions is more synchronized during dissolution, reducing the risk of local supersaturation and improving the crystallization consistency of the finished sodium sesquicarbonate product. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 A three-dimensional structural schematic diagram of a stirring device for producing sodium sesquicarbonate according to an embodiment of this application;

[0016] Figure 2 A schematic diagram of the L-shaped plate assembly structure in a stirring device for sodium sesquicarbonate production according to an embodiment of this application;

[0017] Figure 3 A partial cross-sectional structural schematic diagram of a stirring device for producing sodium sesquicarbonate according to an embodiment of this application;

[0018] Figure 4 for Figure 3 Enlarged view of point A;

[0019] Figure 5 This is a schematic diagram of the hopper structure of a stirring device for producing sodium sesquicarbonate according to an embodiment of this application;

[0020] Figure 6 This is a schematic diagram of the deflection of the guide tube of the stirring device for sodium sesquicarbonate production provided in one embodiment of this application.

[0021] In the diagram: Mixing tank 1;

[0022] Motor 2, stirring shaft 21;

[0023] Hopper 3, flap valve 31;

[0024] L-shaped plate 4, slide bar 41, movable rod 42, paddle 421, chassis 422, sleeve 423;

[0025] Rotary block 5, curved groove 51, eccentric rod 52;

[0026] 6-speed transmission belt;

[0027] 7. Guide tube, 71. Bar rod, 8. Discharge valve, 81. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0029] It should be noted that in the description of this application, the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] In this application, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of these terms in this application based on the specific circumstances.

[0031] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0032] This embodiment provides a stirring device for the production of sodium sesquicarbonate. (See also...) Figures 1-6 As shown, the device includes a mixing tank 1, a motor 2 mounted on the top of the mixing tank 1, the output end of the motor 2 being connected to a stirring shaft 21, the stirring shaft 21 extending into the mixing tank 1, a hopper 3 on the top of the mixing tank 1, a premixing device inside the hopper 3, the premixing device including an L-shaped plate 4, the L-shaped plate 4 being inserted through the top of the mixing tank 1, a rotating block 5 on the top of the mixing tank 1, the stirring shaft 21 being connected to the rotating block 5 via a transmission belt 6, a curved groove 51 being formed on the side wall of the rotating block 5, a sliding rod 41 being connected to the side wall of the bottom of the vertical section of the L-shaped plate 4, the sliding head of the sliding rod 41 being inserted into the curved groove 51 and slidingly contacting the curved groove 51, a movable rod 42 being connected to the end of the horizontal section of the L-shaped plate 4 away from the vertical section, and multiple paddles 421 being connected to the outer wall of the movable rod 42.

[0033] In the above embodiment, a motor 2 is fixedly installed on the top of the mixing tank 1, and a stirring shaft 21 is fixedly installed on the output end of the motor 2. Starting the motor 2 drives the stirring shaft 21 to rotate, which can stir the raw materials inside the mixing tank 1 and improve the uniformity of the raw material mixing. Further, a hopper 3 is fixedly installed on the top of the mixing tank 1, into which sodium carbonate and sodium bicarbonate can be poured. A premixing device is provided inside the hopper 3. The premixing device includes an L-shaped plate 4 that is inserted through and inserted into the top of the mixing tank 1. A rotating block 5 is provided on the top of the mixing tank 1. The stirring shaft 21 is connected to the rotating block 5 through a transmission belt 6, that is, when the stirring shaft 21 rotates, it can drive the rotating block 5 to rotate through the transmission belt 6. In addition, a curved groove 51 is opened on the side wall of the rotating block 5. A sliding rod 41 is connected to the side wall of one end of the L-shaped plate 4, and the sliding head of the sliding rod 41 is inserted into the curved groove 51 and slides in contact with the curved groove 51. It should be noted that the sliding rod 41 will not disengage from the curved groove 51. Figure 4 and Figure 5As shown, the curved groove 51 extends from the lower end of the rotating block 5 to the upper end, and then from the upper end to the lower end, forming a closed loop around the outer side of the rotating block 5. When the rotating block 5 rotates, the curved groove 51 rotates along with it, causing the curved groove 51 to drive the sliding rod 41 to move up and down reciprocally. This, in turn, drives the movable rod 42 at the other end of the L-shaped plate 4 to drive the paddle 421 to move up and down reciprocally within the hopper 3. This pre-mixes and stirs the sodium carbonate and sodium bicarbonate raw materials in the hopper 3, allowing the particles to physically combine, reducing density differences, and preventing solution concentration stratification due to different settling velocities during feeding. Furthermore, the closer contact of the mixed particles ensures more synchronized ion release of sodium carbonate and sodium bicarbonate during dissolution, reducing the risk of localized supersaturation and improving the crystallization consistency of the finished sodium sesquicarbonate product.

[0034] In one embodiment of this application, see reference Figure 5 As shown, a flap valve 31 is installed at the discharge port at the bottom of the hopper 3.

[0035] In the above embodiment, when the movable rod 42 stirs the raw materials in the hopper 3, the flap valve 31 is in a closed state. After the raw materials in the hopper 3 are stirred evenly, the flap valve 31 is opened, so that the evenly stirred raw materials fall into the mixing tank 1 for dissolution and mixing, which is beneficial to improving the uniformity of the raw material mixing in the hopper 3.

[0036] In one embodiment of this application, see [reference] Figure 4 and Figure 5 As shown, a guide cylinder 7 is rotatably connected to the bottom of the hopper 3, and a perforated rod 71 is connected to the outer wall of the guide cylinder 7. An eccentric rod 52 is connected to the bottom of the rotating block 5, and the eccentric rod 52 is inserted into the elongated hole of the perforated rod 71.

[0037] In the above embodiment, the feed inlet at the top of the guide cylinder 7 and the discharge outlet at the bottom of the hopper 3 are nested and rotatably connected, and a perforated rod 71 is connected to the outer wall of the guide cylinder 7. An eccentric rod 52 is connected to the bottom of the rotating block 5, and the eccentric rod 52 is inserted into the elongated hole of the perforated rod 71. Figure 6 As shown, when the rotating block 5 rotates, it drives the eccentric rod 52 at the bottom to make a circular motion, which in turn drives the perforated rod 71 to deflect in the horizontal plane. The perforated rod 71 then drives the guide cylinder 7 to swing, so that the raw material in the guide cylinder 7 is sprayed out from the outlet of the guide cylinder 7 while the guide cylinder 7 is swinging. Compared with the raw material being sprayed from a fixed outlet, the swinging of the guide cylinder 7 increases the spreading area of ​​the raw material in the mixing tank 1, which is beneficial to improving the uniformity of the raw material dissolution and mixing.

[0038] In one embodiment of this application, see reference Figure 5 As shown, the bottom end face of the movable rod 42 is connected to the chassis 422.

[0039] In the above embodiment, the base plate 422 connected to the bottom end of the movable rod 42 is used to drive the base plate 422 to move up and down at the bottom of the hopper 3 when the movable rod 42 moves up and down, so as to stir the raw materials at the bottom of the hopper 3, which is beneficial to improve the uniformity of the raw material mixing.

[0040] In one embodiment of this application, see reference Figure 5 As shown, the upper end of the movable rod 42 is provided with a sleeve 423, and the sleeve 423 is connected to the side wall of the hopper 3 through a fixed rod.

[0041] In the above embodiment, the sleeve 423 is arranged in the vertical direction of the hopper 3 and is sleeved on the upper end of the movable rod 42. It is used to limit the movable rod 42 and keep the movable rod 42 in vertical reciprocating motion, which is beneficial to improving the stability of the movable rod 42 during movement.

[0042] In one embodiment of this application, see reference Figure 2 As shown, the discharge port of the guide tube 7 is a flat opening.

[0043] In the above embodiment, the discharge port of the guide tube 7 is a flat opening, which increases the cross-section of the discharge port of the guide tube 7, allowing the material to be more evenly distributed and sprinkled into the solution during the discharge process, which is beneficial to improving the uniformity of material dissolution and mixing.

[0044] In one embodiment of this application, see reference Figure 1 As shown, the bottom of the mixing tank 1 is provided with a discharge valve 8, and the bottom of the mixing tank 1 is provided with a support leg 81 for lifting the mixing tank 1 off the ground.

[0045] In the above embodiment, a discharge valve 8 is provided at the bottom of the mixing tank 1, and a support leg 81 is provided at the bottom of the mixing tank 1 to support the mixing tank 1 at a certain height off the ground, so that a transfer container can be placed below the discharge valve 8 to collect and transfer the mixture in the mixing tank 1.

[0046] In actual use, sodium carbonate and sodium bicarbonate are poured into hopper 3 and motor 2 is started. The sodium carbonate and sodium bicarbonate then slide into guide tube 7 and into mixing tank 1. Motor 2 drives stirring shaft 21 to rotate inside mixing tank 1, mixing the sodium carbonate and sodium bicarbonate solutions. During rotation, stirring shaft 21 uses a transmission belt to drive rotating block 5 to rotate at the top of mixing tank 1. Simultaneously, rotating block 5 drives eccentric rod 52 to perform circular motion, and eccentric rod 52 adheres to the perforated rod 7. The inner wall of the elongated hole 1 moves back and forth and pushes and pulls the elongated hole rod 71 back and forth, so that the elongated hole rod 71 drives the guide cylinder 7 to rotate back and forth at the bottom of the hopper 3. While the rotating block 5 is rotating, the curved groove 51 will press the slide rod 41 back and forth, so that the slide rod 41 pushes and pulls the L-shaped plate 4 up and down back and forth. At this time, the L-shaped plate 4 will slide up and down back and forth at the top of the mixing tank 1. While the L-shaped plate 4 slides up and down back and forth, it will drive the movable rod 42 to move up and down back and forth. Through the movable rod 42 driving the paddle 421 to move up and down back and forth, the sodium carbonate and sodium bicarbonate inside the hopper 3 can be turned up and down to improve the premixing effect of sodium carbonate and sodium bicarbonate.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them; although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A stirring device for the production of sodium sesquicarbonate, characterized in that, The system includes a mixing tank (1), a motor (2) mounted on the top of the mixing tank (1), the output end of the motor (2) being connected to a stirring shaft (21) for transmission, the stirring shaft (21) extending into the mixing tank (1), a hopper (3) provided on the top of the mixing tank (1), a premixing device provided inside the hopper (3), the premixing device including an L-shaped plate (4), the L-shaped plate (4) being inserted through and inserted into the top of the mixing tank (1), and a rotating block (5) provided on the top of the mixing tank (1). The stirring shaft (21) is connected to the rotating block (5) via a transmission belt (6). The rotating block (5) has a curved groove (51) on its side wall. The side wall of the bottom of the vertical section of the L-shaped plate (4) is connected to a sliding rod (41). The sliding head of the sliding rod (41) is inserted into the curved groove (51) and slides in contact with the curved groove (51). The horizontal section of the L-shaped plate (4) is connected to a movable rod (42) at the end away from the vertical rod section. The outer wall of the movable rod (42) is connected to multiple paddles (421).

2. The stirring device for producing sodium sesquicarbonate according to claim 1, characterized in that, A flap valve (31) is installed at the discharge port at the bottom of the hopper (3).

3. The stirring device for sodium sesquicarbonate production according to claim 1, characterized by The bottom of the hopper (3) is rotatably connected to a guide cylinder (7), and the outer wall of the guide cylinder (7) is connected to a perforated rod (71). The bottom of the rotating block (5) is connected to an eccentric rod (52), and the eccentric rod (52) is inserted into the long hole of the perforated rod (71).

4. The stirring device for sodium sesquicarbonate production according to claim 1, characterized by The bottom end of the movable rod (42) is connected to the chassis (422).

5. The stirring device for sodium sesquicarbonate production according to claim 1, characterized by The upper end of the movable rod (42) is provided with a sleeve (423), and the sleeve (423) is connected to the side wall of the hopper (3) through a fixed rod.

6. The stirring device for producing sodium sesquicarbonate according to claim 3, characterized in that, The discharge port of the guide tube (7) is a flat opening.

7. The stirring device for sodium sesquicarbonate production according to claim 1, characterized by The bottom of the mixing tank (1) is provided with a discharge valve (8) and the bottom of the mixing tank (1) is provided with a support leg (81) for lifting the mixing tank (1) off the ground.

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