Reciprocating stirring reaction kettle for preparing magnesium sulfate

Abstract

The invention relates to the technical field of chemical reaction kettles, and provides a reciprocating stirring reaction kettle for magnesium sulfate preparation, which comprises a mounting seat, a reaction kettle body is erected above the mounting seat, a gear ring is mounted on the bottom surface of the reaction kettle body, the upper end of the reaction kettle body is connected with an upper cover, and the lower end of the reaction kettle body is connected with a lower cover. A fixed gear is fixedly connected to the interior of the upper cover, a driving motor is mounted at the upper end of the upper cover, a connecting plate is fixedly connected to the bottom end of the driving motor, and a first stirring assembly is connected to one end of the connecting plate. The driving motor drives the first stirring assembly and the second stirring assembly to rotate and simultaneously rotate to mix and stir magnesium sulfate preparation raw materials in the reaction kettle body, and meanwhile, the driving motor controls the connecting plate to alternately rotate forwards and backwards, so that the first stirring assembly and the second stirring assembly stir the raw materials to generate high-speed vortexes and then reversely disturb the vortexes; therefore, a plurality of turbulent flows are repeatedly formed, the mixing of the solution is accelerated by utilizing the turbulent flows, and the mixing efficiency of the solution is improved.

Description

Technical Field

[0001] The invention relates to the technical field of chemical reactors, in particular to a reciprocatingly stirred reactor used for preparing magnesium sulfate. Background Art

[0002] At present, magnesium sulfate is mainly produced industrially through the sulfuric acid method. The raw materials are magnesium oxide and dilute sulfuric acid. The reaction solution needs to be fully stirred during the reaction to ensure that the reaction proceeds fully. The equipment has a large power load and energy consumption, poor stability, and obvious vibration.

[0003] Most of the existing reactors use a motor to drive a stirring shaft and a stirring blade to rotate to stir the material in the reactor. After the motor is started, it drives the stirring shaft to rotate in one direction all the time, and the material in the reactor rotates with the stirring shaft and gradually synchronizes with the rotation speed of the stirring shaft. At this time, the stirring shaft and the material in the reactor are relatively still, and the stirring effect of the stirring shaft on the material will be weakened. In addition, since large particles of raw materials will be deposited at the bottom of the inner cavity of the reactor due to gravity during the reaction, simple stirring is difficult to react quickly with the magnesium sulfate solution and concentrated sulfuric acid, resulting in a large amount of sediment at the bottom of the reaction tank, causing the reaction rate to decrease, resulting in insufficient reaction, and ultimately affecting the purity of the magnesium sulfate crystals, resulting in a low yield rate.

[0004] Therefore, we have made improvements to this and proposed a reactor that can be stirred reciprocatingly for preparing magnesium sulfate. Summary of the invention

[0005] The technical problems to be solved by the present invention are: single stirring direction, weakened stirring effect, sedimentation of raw materials due to gravity, decreased reaction rate and incomplete reaction.

[0006] In order to achieve the above-mentioned invention object, the present invention provides a reciprocatingly stirred reactor for preparing magnesium sulfate, comprising a mounting seat, a reactor body is mounted above the mounting seat, a gear ring is installed on the bottom surface of the reactor body, an upper cover is connected to the upper end of the reactor body, a fixed gear is fixedly connected to the inside of the upper cover, a drive motor is installed at the upper end of the upper cover, a connecting plate is fixedly connected to the bottom end of the drive motor, one end of the connecting plate is connected to a first stirring assembly, and the other end of the connecting plate is connected to a second stirring assembly, the bottom ends of the first stirring assembly and the second stirring assembly are simultaneously connected to anchor stirrers, and the upper and lower ends of the first stirring assembly and the second stirring assembly are respectively connected to the fixed gear and the gear ring.

[0007] As a further solution of the present invention, the mounting seat includes a support frame, which is connected to both sides of the reactor body, a base is fixedly installed on the bottom end of the support frame, a slide rail is installed on the upper surface of the base, a slider is slidably installed on the slide rail, a tension spring is connected to the slider, and the upper end of the tension spring is connected to the reactor body.

[0008] As a further solution of the present invention, the first stirring assembly includes a hollow first rotating tube, the outer side surface of the first rotating tube is connected to a first stirring blade, the upper end of the first rotating tube is installed with a first gear, the first gear is meshed with a fixed gear, the middle part of the first rotating tube is installed with a first spiral, and the bottom end of the first spiral is connected to a second gear.

[0009] As a further solution of the present invention, the second stirring assembly includes a hollow second rotating tube, the outer side surface of the second rotating tube is connected to a second stirring blade, the upper end of the second rotating tube is installed with a third gear, the third gear is meshed with a fixed gear, the middle part of the second rotating tube is installed with a second spiral, and the bottom end of the second spiral is connected to a fourth gear.

[0010] As a further solution of the present invention, the anchor agitator includes a connecting seat, two rotating clamping rings are installed on the upper end of the connecting seat, and an arc-shaped scraper is installed on the bottom end of the connecting seat.

[0011] As a further solution of the present invention, a first connecting groove is formed at the bottom end of the first rotating tube, and a second connecting groove is formed at the bottom end of the second rotating tube. The first connecting groove and the second connecting groove are respectively connected to two rotating clamping rings.

[0012] As a further aspect of the present invention, the spiral directions of the first spiral and the second spiral are opposite.

[0013] As a further solution of the present invention, two sides of the arc-shaped scraper blade are bent upward along the inside of the mounting seat, and sieve holes are opened on the arc-shaped scraper blade.

[0014] As a further solution of the present invention, a first curved tube is provided at the top end of the first rotating tube, and a second curved tube is provided at the top end of the second rotating tube. The first curved tube and the second curved tube are both fixedly connected to the connecting plate, and the bottom ends of the first spiral and the second spiral extend beyond the bottom surface of the connecting seat.

[0015] The present invention provides a reciprocatingly stirred reactor for preparing magnesium sulfate, which has the following beneficial effects: 1. The first stirring component and the second stirring component are installed inside the reactor body, and the driving motor drives the connecting plate to drive the first stirring component and the second stirring component to rotate. At the same time, the first stirring component and the second stirring component and the fixed gear rotate along the fixed gear. The first stirring component and the second stirring component are used to mix and stir the magnesium sulfate preparation raw materials inside the reactor body. At the same time, the driving motor controls the connecting plate to rotate forward and reverse alternately, so that the first stirring component and the second stirring component stir the raw materials to generate high-speed vortices and then reversely disturb the vortices, thereby repeatedly forming multiple turbulences, thereby utilizing the turbulence to accelerate the mixing of the solution and improve the mixing efficiency of the solution.

[0016] 2. A first spiral is provided inside the first rotating tube, a second spiral is provided inside the second rotating tube, and the bottoms of the first spiral and the second spiral are meshed with the gear ring at the same time, so that the second spiral and the first spiral mesh with the gear ring and rotate as the connecting plate rotates. In this process, the first spiral that rotates forward lifts and extracts the bottom sediment scooped up by the arc-shaped scraper upward, and evenly throws it down from the first bend at the top to facilitate re-mixing with the raw material solution. At the same time, the reversed second spiral pumps the upper clear liquid downward to flush the bottom sediment to avoid sediment agglomeration. When the connecting plate is reversed, the functions of the first spiral and the second spiral are replaced, thereby preventing the raw material from sinking to the bottom and agglomerating, and also improving the mixing efficiency of the raw material.

[0017] 3. By connecting a tension spring at the bottom of the reactor body and slidingly installing it through a slider and a slide rail, the vibration generated by the reactor body during reaction preparation can be offset and buffered by the tension spring to prevent the reactor body from shaking significantly and ensure the stability of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a reciprocatingly stirred reactor for preparing magnesium sulfate provided in the present application; Figure 2 A cross-sectional view of a reciprocatingly stirred reaction kettle for preparing magnesium sulfate provided in the present application; Figure 3 A schematic diagram of the structure of a mounting base for a reciprocatingly stirred reaction kettle for preparing magnesium sulfate provided in the present application; Figure 4This is a schematic diagram of the connection structure of a first stirring component, an anchor stirrer, and a second stirring component of a reciprocating stirring reactor for preparing magnesium sulfate provided in the present application; Figure 5 This is a schematic diagram of the structure of a first stirring component of a reciprocatingly stirred reactor for preparing magnesium sulfate provided in the present application; Figure 6 A schematic diagram of the structure of a second stirring component of a reciprocatingly stirred reaction kettle for preparing magnesium sulfate provided in the present application; Figure 7 A schematic diagram of the structure of an anchor agitator for a reciprocatingly stirred reactor for preparing magnesium sulfate provided in the present application; Figure 8 for Figure 4 A is an enlarged structural diagram of FIG.

[0020] In the figure: 1. mounting base; 11. support frame; 12. base; 13. slide rail; 14. slider; 15. tension spring; 2. reactor body; 3. upper cover; 4. fixed gear; 5. drive motor; 6. connecting plate; 7. first stirring assembly; 71. first rotating tube; 72. first stirring blade; 73. first curved pipe; 74. first gear; 75. first spiral; 76. second gear; 77. first connecting groove; 8. anchor agitator; 81. connecting base; 82. rotating clamp ring; 83. arc scraper; 9. second stirring assembly; 91. second rotating tube; 92. second stirring blade; 93. second curved pipe; 94. third gear; 95. second spiral; 96. fourth gear; 97. second connecting groove; 10. gear ring. DETAILED DESCRIPTION

[0021] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples of the specification. The following examples are only used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figure 1-Figure 8 As shown, the present embodiment proposes a reciprocatingly stirred reactor for preparing magnesium sulfate, comprising a mounting seat 1, a reactor body 2 is mounted above the mounting seat 1, a gear ring 10 is installed on the bottom surface of the reactor body 2, an upper cover 3 is connected to the upper end of the reactor body 2, a fixed gear 4 is connected and fixed inside the upper cover 3, a driving motor 5 is installed on the upper end of the upper cover 3, a connecting plate 6 is fixedly connected to the bottom end of the driving motor 5, a first stirring component 7 is connected to one end of the connecting plate 6, a second stirring component 9 is connected to the other end of the connecting plate 6, an anchor stirrer 8 is connected to the bottom ends of the first stirring component 7 and the second stirring component 9 at the same time, and the upper and lower ends of the first stirring component 7 and the second stirring component 9 are respectively connected to the fixed gear 4 and the gear ring 10.

[0023] The mounting base 1 includes a support frame 11, which is connected to both sides of the reactor body 2. A base 12 is fixedly installed at the bottom end of the support frame 11, and a slide rail 13 is installed on the upper surface of the base 12. A slider 14 is slidably installed on the slide rail 13, and a tension spring 15 is connected to the slider 14. The upper end of the tension spring 15 is connected to the reactor body 2, and the slider 14 is slidably installed with the slide rail 13, so that the vibration generated by the reactor body 2 during the reaction preparation is offset and buffered by the tension spring 15, so as to prevent the reactor body 2 from shaking significantly and ensure the stability of the equipment. The bottom of the reactor body 2 is movably connected to the base 12 through the tension spring 15 and the slider 14, so as to facilitate the rapid fixing or disassembly of the reactor body 2 and facilitate the tilting loading and unloading of the reactor body 2.

[0024] The first stirring assembly 7 includes a hollow first rotating tube 71, the outer side of the first rotating tube 71 is connected to a first stirring blade 72, the upper end of the first rotating tube 71 is installed with a first gear 74, the first gear 74 is meshed with the fixed gear 4, the middle part of the first rotating tube 71 is installed with a first spiral 75, the bottom end of the first spiral 75 is connected with a second gear 76, the first rotating tube 71 is sleeved with the connecting plate 6, as the connecting plate 6 rotates, the first gear 74 is connected to the fixed gear 4, and rotates around the connecting plate 6 while rotating, so that the first stirring blade 72 stirs the raw materials inside the reactor body 2, and improves the stirring efficiency of the device. The first spiral 75 installed inside the first rotating tube 71 rotates upward when rotating forward, lifts the sediment at the bottom of the reactor body 2 upward, and throws it back into the mixed liquid, so as to facilitate sufficient mixing and stirring, and the first spiral 75 reverses when the clear liquid on the upper layer of the reactor body 2 is pumped downward to disperse the sediment mixture on the lower layer of the reactor body 2 to prevent the raw materials from agglomerating after deposition.

[0025] The second stirring assembly 9 includes a hollow second rotating tube 91, the outer side of the second rotating tube 91 is connected to a second stirring blade 92, the upper end of the second rotating tube 91 is installed with a third gear 94, the third gear 94 is meshed with the fixed gear 4, the middle part of the second rotating tube 91 is installed with a second spiral 95, the bottom end of the second spiral 95 is connected to a fourth gear 96, the second stirring assembly 9 has the same structure and function as the first stirring assembly 7, the second rotating tube 91 is sleeved with the connecting plate 6, and the third gear 94 is meshed with the fixed gear 4 as the connecting plate 6 rotates. 4, and rotates around the connecting plate 6 while rotating on its own, so that the second stirring blade 92 stirs the raw materials inside the reactor body 2, thereby improving the stirring efficiency of the device. The second spiral 95 installed inside the second rotating tube 91 rotates upward when rotating forward, so that the sediment at the bottom of the reactor body 2 is lifted upward and thrown back into the mixed liquid, so as to facilitate sufficient mixing and stirring. When the second spiral 95 is reversed, the clear liquid on the upper layer of the reactor body 2 is pumped downward to disperse the sediment mixture on the lower layer of the reactor body 2, so as to prevent the raw materials from agglomerating after being deposited.

[0026] The anchor agitator 8 includes a connecting seat 81, two rotating clamping rings 82 are installed on the upper end of the connecting seat 81, and an arc-shaped scraper 83 is installed on the bottom end of the connecting seat 81. The anchor agitator 8 is installed from the bottom ends of the first stirring component 7 and the second stirring component 9. As the first stirring component 7 and the second stirring component 9 revolve, the arc-shaped scraper 83 at the bottom of the connecting seat 81 scratches and cleans the lower inner wall of the reactor body 2, shovels up the deposited raw materials, and prevents the raw materials from adhering to the inner wall of the reactor body 2.

[0027] A first connecting groove 77 is provided at the bottom end of the first rotating tube 71, and a second connecting groove 97 is provided at the bottom end of the second rotating tube 91. The first connecting groove 77 and the second connecting groove 97 are respectively connected to two rotating clamping rings 82. The first connecting groove 77 and the second connecting groove 97 rotate relative to the rotating clamping ring 82 to maintain the connection between the first stirring assembly 7, the second stirring assembly 9 and the anchor agitator 8.

[0028] The spiral directions of the first spiral 75 and the second spiral 95 are opposite. When the first stirring component 7 and the second stirring component 9 rotate around the connecting plate 6 at the same time, the first spiral 75 and the second spiral 95 are meshed with the gear ring 10 at the same time, resulting in a positive and negative rotation effect of the first spiral 75 and the second spiral 95, which is convenient for forming a vertical circulation flow of the solution inside the reactor body 2, facilitating the position replacement of the upper and lower layer solutions, and avoiding uneven stirring of the solution on the lower side.

[0029] Both sides of the arc scraper 83 are bent upward along the inside of the mounting seat 1, and a sieve hole is opened on the arc scraper 83. The arc scraper 83 is in close contact with the inner wall of the reactor body 2 to stir the raw materials on the lower side of the reactor body 2 to prevent the raw materials on the lower side from adhering to the inner wall.

[0030] A first curved pipe 73 is provided at the top end of the first rotating tube 71, and a second curved pipe 93 is provided at the top end of the second rotating tube 91. The first curved pipe 73 and the second curved pipe 93 are both fixedly connected to the connecting plate 6. The bottom ends of the first spiral 75 and the second spiral 95 extend beyond the bottom surface of the connecting seat 81. The first curved pipe 73 and the second curved pipe 93 guide the circulation direction of the liquid, and the bottom ends of the first spiral 75 and the second spiral 95 penetrate into the deposited raw materials on the lower side of the connecting seat 81 for stirring, so as to fully mix and stir the raw materials on the lower side.

[0031] Specifically, when the present invention is used for the reciprocating stirring reactor for preparing magnesium sulfate: the driving motor 5 and the connecting plate 6 drive the first stirring component 7 and the second stirring component 9 to rotate inside the reactor body 2, the first gear 74 and the third gear 94 are meshed with the fixed gear 4, so that the first rotating tube 71 and the second rotating tube 91 rotate along the fixed gear 4, the first stirring blade 72 and the second stirring blade 92 mix and stir the raw materials for preparing magnesium sulfate inside the reactor body 2, forming a circular spiral path, so that the raw materials inside the reactor body 2 are fully stirred, and the collision between the water flows is used to make the first stirring component 7 and the second stirring component 9 stir the raw materials to generate high-speed vortices and then reversely disturb the vortices, thereby repeatedly forming multiple turbulences, so as to accelerate the mixing of the solutions by using the turbulence, and at the same time, the first rotating tube 71 is provided with a first spiral 75, and the second rotating tube 71 is provided with a second spiral 75. A second spiral 95 is provided inside the tube 91, and the bottoms of the first spiral 75 and the second spiral 95 are meshed with the gear ring 10 at the same time, so that the second spiral 95 and the first spiral 75 mesh with the gear ring 10 and rotate as the connecting plate 6 rotates. During this process, the first spiral 75 that rotates forwardly lifts and extracts the bottom sediment scooped up by the arc scraper 83, and evenly throws it down from the top first bend 73 to facilitate re-mixing with the raw material solution. At the same time, the second spiral 95 that reverses the upper clear liquid is pumped downward to flush the bottom sediment to avoid sediment agglomeration. The driving motor 5 controls the connecting plate 6 to rotate forward and reverse periodically. After reversal, the functions of the first spiral 75 and the second spiral 95 are replaced, thereby avoiding the sediment from sinking to the bottom and agglomerating, and also improving the mixing efficiency of the raw materials. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0032] The above embodiments are only used to illustrate the present invention, but not to limit the present invention. Although the present invention is described in detail with reference to the embodiments, it should be understood by those skilled in the art that various combinations, modifications or equivalent substitutions of the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention, and should be included in the scope of the claims of the present invention.

Claims

1. A reciprocatingly stirred reaction kettle for preparing magnesium sulfate, comprising a mounting seat (1), characterized in that: A reactor body (2) is mounted above the mounting seat (1), a gear ring (10) is mounted on the bottom surface of the reactor body (2), an upper cover (3) is connected to the upper end of the reactor body (2), a fixed gear (4) is connected and fixed inside the upper cover (3), a driving motor (5) is mounted on the upper end of the upper cover (3), a connecting plate (6) is fixedly connected to the bottom end of the driving motor (5), one end of the connecting plate (6) is connected to a first stirring assembly (7), the other end of the connecting plate (6) is connected to a second stirring assembly (9), the bottom ends of the first stirring assembly (7) and the second stirring assembly (9) are simultaneously connected to an anchor stirrer (8), and the upper and lower ends of the first stirring assembly (7) and the second stirring assembly (9) are respectively connected to the fixed gear (4) and the gear ring (10).

2. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 1, characterized in that: The mounting seat (1) comprises a support frame (11), the support frame (11) is connected to both sides of the reactor body (2), a base (12) is fixedly mounted on the bottom end of the support frame (11), a slide rail (13) is mounted on the upper surface of the base (12), a slider (14) is slidably mounted on the slide rail (13), a tension spring (15) is connected to the slider (14), and the upper end of the tension spring (15) is connected to the reactor body (2).

3. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 1, characterized in that: The first stirring assembly (7) comprises a hollow first rotating tube (71), the outer side surface of the first rotating tube (71) is connected to a first stirring blade (72), the upper end of the first rotating tube (71) is mounted with a first gear (74), the first gear (74) is meshed with a fixed gear (4), the middle part of the first rotating tube (71) is mounted with a first spiral (75), and the bottom end of the first spiral (75) is connected to a second gear (76).

4. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 3, characterized in that: The second stirring assembly (9) comprises a hollow second rotating tube (91), the outer side surface of the second rotating tube (91) is connected to a second stirring blade (92), the upper end of the second rotating tube (91) is mounted with a third gear (94), the third gear (94) is meshed with a fixed gear (4), the middle part of the second rotating tube (91) is mounted with a second spiral (95), and the bottom end of the second spiral (95) is connected to a fourth gear (96).

5. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 4, characterized in that: The anchor stirrer (8) comprises a connecting seat (81), two rotating clamping rings (82) are installed at the upper end of the connecting seat (81), and an arc-shaped scraper (83) is installed at the bottom end of the connecting seat (81).

6. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 4, characterized in that: A first connecting groove (77) is formed at the bottom end of the first rotating tube (71), and a second connecting groove (97) is formed at the bottom end of the second rotating tube (91). The first connecting groove (77) and the second connecting groove (97) are respectively connected to two rotating clamping rings (82).

7. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 4, characterized in that: The spiral directions of the first spiral (75) and the second spiral (95) are opposite.

8. A reciprocatingly stirred reactor for preparing magnesium sulfate according to claim 5, characterized in that: Both sides of the arc-shaped scraper (83) are bent upwards along the inside of the mounting seat (1), and sieve holes are provided on the arc-shaped scraper (83).

9. A reciprocatingly stirred reaction kettle for preparing magnesium sulfate according to claim 5, characterized in that: A first curved tube (73) is disposed at the top end of the first rotating tube (71), and a second curved tube (93) is disposed at the top end of the second rotating tube (91). The first curved tube (73) and the second curved tube (93) are both fixedly connected to the connecting plate (6), and the bottom ends of the first spiral (75) and the second spiral (95) extend beyond the bottom surface of the connecting seat (81).

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