Premixing device of chemical engineering reaction kettle

Abstract

The utility model provides a premixing device of a chemical engineering reaction kettle, relates to the field of premixing of reaction kettles, and adopts the technical scheme that the premixing device comprises a base, a mixing tank and a driving assembly, the mixing tank is provided with a sealing cover, the driving assembly can drive the mixing tank to rotate around the axis of the mixing tank, and the driving assembly comprises a driving motor, the driving motor can rotate forwards and backwards and is arranged on the base, the supporting ring is arranged on the upper portion of the base, an inclined angle exists between the plane where the end face of the supporting ring is located and the vertical plane, the supporting ring is arranged on the mixing tank in a sleeving mode, the mixing tank can be obliquely arranged on the base under the action of the supporting ring, and an opening faces the oblique upper direction. The mixing tank can rotate relative to the supporting ring. According to the utility model, a stirring mechanism is omitted, a better stirring effect can be achieved, the probability of shutdown due to faults can be greatly reduced, and the production efficiency is ensured.

Description

Technical Field

[0001] This utility model relates to the field of premixing of reaction vessels, and more particularly to a premixing device for a chemical engineering reaction vessel. Background Technology

[0002] Chemical engineering reactors generally refer to containers that undergo physical or chemical reactions. Through structural design and parameter configuration of the container, changes such as heating, evaporation, and cooling required by the process can be achieved. Reactors are widely used in petroleum, chemical, rubber, pesticide, dye, pharmaceutical, and food industries. For materials that need to undergo chemical reactions, mixing is a crucial step. In order to facilitate subsequent reaction processes in the reactor, the materials are usually premixed by a mixing device before entering the reactor for chemical reaction.

[0003] In the prior art, Chinese utility model patent with patent authorization announcement number CN 218307388 U discloses a pre-mixing device for a chemical reaction vessel, including a mixing cylinder. A first feed pipe is fixedly connected to one outer wall of the mixing cylinder, and a second feed pipe is fixedly connected to the other outer wall of the mixing cylinder. A discharge pipe is fixedly connected to the bottom of the mixing cylinder. A fixing plate is fixedly connected to one outer wall of the mixing cylinder, and support columns are fixedly connected to the bottom of the fixing plate near the four corners. A stirring mechanism is fixedly installed at the top of the mixing cylinder, and a cleaning mechanism is fixedly installed at the top of the fixing plate. Different materials can be loaded into the mixing cylinder through the first feed pipe and the second feed pipe. Then, the stirring motor is started. After the stirring motor starts, it will drive the stirring rod through the transmission shaft to stir and mix the materials in the mixing cylinder. The stirred and mixed materials can be discharged from the discharge pipe for subsequent reaction processes.

[0004] With the above technical solution, the drive shaft extends too far. When there is a lot of material in the mixing drum, the stirring rods at different positions are subjected to uneven force during stirring, resulting in uneven force on the drive shaft. At the same time, with a large number of stirring rods, the overall force on the stirring mechanism is large and uneven, which is prone to failure, causing frequent shutdowns of the mixing device for repair, and affecting production efficiency. Utility Model Content

[0005] To address the technical problem of frequent malfunctions in the stirring mechanism of the premixing device of a chemical engineering reactor in the prior art, this utility model provides a premixing device for a chemical engineering reactor that eliminates the need for a stirring mechanism while achieving better stirring results. This significantly reduces the probability of downtime due to malfunctions and ensures production efficiency.

[0006] The technical solution adopted by this utility model to solve the above-mentioned technical problems is: a pre-mixing device for a chemical engineering reactor, comprising a base and a mixing tank, wherein the mixing tank is provided with a sealing cover, and further comprising:

[0007] A drive assembly capable of driving the mixing tank to rotate around its own axis, the drive assembly including a drive motor capable of forward and reverse rotation, the drive motor being mounted on the base;

[0008] A support ring is disposed on the upper part of the base. The plane on which the end face of the support ring is located has an inclination angle relative to the vertical plane. The support ring is sleeved on the mixing tank. The mixing tank can be tilted on the base under the action of the support ring, with its opening facing upward. The mixing tank can rotate relative to the support ring.

[0009] This invention controls the tilted mixing tank to alternately rotate forward and reverse, causing the liquid inside the tank to form numerous vortices and countercurrents. This increases the amplitude and speed of the flow field within the mixing tank, enabling thorough mixing of the solid materials and liquids, resulting in a better mixing effect. Furthermore, the liquid has a scouring effect on the inner wall of the mixing tank, carrying away any adhering substances and preventing material residue from remaining inside. Compared to using a mixer, this invention improves the mixing effect, has a lower failure rate, and ensures production efficiency.

[0010] Furthermore, the drive assembly includes a meshing gear ring and a drive gear, the gear ring being fitted onto a drive cone at the bottom of the mixing tank, and the drive gear being connected to the drive motor.

[0011] Furthermore, a support groove is provided on the outer circumference of the mixing tank, and a support ring is rotatably provided in the support groove. Multiple support rollers are provided on the inner wall of the support ring, and the support rollers abut against the bottom of the support groove.

[0012] Furthermore, support columns are vertically arranged on both sides of the support ring, and the support columns are connected to the base.

[0013] Furthermore, the tilt angle is 45°~60°.

[0014] This invention increases the spreading area of ​​the mixture in the mixing tank by controlling the tilt angle between 45° and 60°. This allows the weight and inertia of the mixture to act on the positive component of the direction of motion, forming a spiral motion trajectory. This results in continuous exchange and mixing of materials in the four directions (up, down, left, and right), thus enhancing the mixing effect.

[0015] Furthermore, at least two stirring plates are provided at the bottom of the mixing tank, and the stirring plates are arranged perpendicular to the bottom surface of the mixing tank.

[0016] Furthermore, the surface of the stirring plate is uniformly provided with multiple protrusions.

[0017] This invention enhances the stirring effect of the mixture by setting a stirring plate with protrusions, thereby improving the mixing effect.

[0018] Furthermore, the inner wall of the mixing tank is provided with a plurality of stirring blades, which are arranged circumferentially along the mixing tank.

[0019] This invention further enhances the mixing effect by using a stirring plate.

[0020] Furthermore, a discharge pipe is provided at the bottom of the mixing tank, and a discharge valve is provided on the discharge pipe.

[0021] Furthermore, the mixing tank is provided with a feed inlet and a liquid inlet.

[0022] As can be seen from the above technical solutions, this utility model has the following advantages:

[0023] This invention provides a pre-mixing device for a chemical engineering reactor. By controlling the tilted mixing tank to alternately rotate forward and reverse, numerous vortices and countercurrents are formed within the tank, increasing the amplitude and speed of the flow field. This effectively mixes the solid materials and liquids, resulting in a better mixing effect. Furthermore, the liquid has a scouring effect on the inner wall of the mixing tank, carrying away any adhering substances and preventing material buildup. Compared to using a mixer, this method improves the mixing effect, has a lower failure rate, and ensures production efficiency. By controlling the tilt angle between 45° and 60°, the spread of the mixture within the tank is increased, allowing the material's weight and inertia to act on the positive component of the direction of motion, forming a spiral trajectory. This continuously exchanges and mixes materials in the four directions (up, down, left, and right), enhancing the mixing effect. The presence of a stirring plate with protrusions further enhances the stirring action and mixing effect. The stirring blades further enhance the mixing effect. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0026] Figure 2This is a schematic diagram of the mixing tank in a specific embodiment of the present invention.

[0027] In the diagram, 1. Sealing cap; 2. Mixing tank; 3. Liquid inlet; 4. Feed inlet; 5. Discharge pipe; 6. Gear ring; 7. Controller; 8. Base; 9. Drive motor; 10. Drive gear; 11. Support column; 12. Support ring. Detailed Implementation

[0028] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0029] like Figure 1 As shown in the figure, this specific embodiment provides a pre-mixing device for a chemical engineering reactor, including a base 8, a mixing tank 2, a drive assembly, and a support ring 12; the mixing tank 2 is provided with a sealing cover 1, the drive assembly can drive the mixing tank 2 to rotate around its own axis, the drive assembly includes a drive motor 9, the drive motor 9 can rotate forward and reverse, the drive motor 9 is disposed on the base 8; the support ring 12 is disposed on the upper part of the base 8, the plane where the end face of the support ring 12 is located has an inclination angle relative to the vertical plane, the inclination angle is 45°~60°, the support ring 12 is sleeved on the mixing tank 2, the mixing tank 2 can be tilted on the base 8 under the action of the support ring 12 with the opening facing the upward direction, the mixing tank 2 can rotate relative to the support ring 12, and the mixing tank 2 has a straight cylindrical structure.

[0030] This specific embodiment controls the tilted mixing tank 2 to alternately rotate forward and reverse, causing the liquid inside the mixing tank 2 to form a large number of vortices and countercurrents. This increases the amplitude and speed of the flow field inside the mixing tank 2, which can drive the solid materials and liquid inside to mix thoroughly, resulting in a better mixing effect. In addition, the liquid has a flushing effect on the inner wall of the mixing tank 2, which can carry away the adhesive materials adhering to the inner wall and prevent material from remaining in the mixing tank 2. Compared with using a stirring mechanism, this improves the mixing effect, has a lower failure rate, and ensures production efficiency.

[0031] like Figure 1As shown, in this specific embodiment, the driving assembly includes a meshing gear ring 6 and a driving gear 10. The gear ring 6 is sleeved on a driving cone at the bottom of the mixing tank 2. The driving gear 10 is connected to the driving motor 9. Both the driving motor 9 and the gear are inclined. By setting the driving cone on the outside of the bottom of the mixing tank 2, the diameter of the gear ring 6 can be reduced, thus reducing manufacturing costs. The driving cone is a hollow shell structure welded to the mixing tank 2. The driving motor 9 is a geared motor that can output a large torque. Furthermore, the driving motor 9 and the driving gear 10 are provided with a protective shell, and the mixing tank 2 is inclined, which can increase the spreading area of ​​the mixture in the mixing tank 2, so that the weight and inertia of the mixture act on the positive component of the direction of motion, forming a spiral motion trajectory, thereby continuously exchanging and mixing materials in the four directions of up, down, left, and right, enhancing the mixing effect.

[0032] To stably support the mixing tank 2, in this specific embodiment, a support groove is provided on the outer circumference of the mixing tank 2. The support groove is located in the upper part of the mixing tank 2. The support ring 12 is rotatably arranged in the support groove. Multiple support rollers are arranged on the inner wall of the support ring 12. The support rollers abut against the bottom of the support groove. Support columns 11 are welded on both sides of the support ring 12. The support columns 11 are connected to the base 8.

[0033] like Figure 2 As shown, to further enhance the stirring effect on the mixture, in this specific embodiment, at least two stirring plates are provided at the bottom of the mixing tank 2. The stirring plates are arranged perpendicularly to the bottom surface of the mixing tank 2. Multiple protrusions are evenly provided on the surface of the stirring plates. Multiple stirring blades are provided on the inner wall of the mixing tank 2. The multiple stirring blades are arranged around the circumference of the mixing tank 2, and the cross-section of the stirring blades is trapezoidal. In this specific embodiment, three stirring plates and five stirring blades are provided.

[0034] like Figure 1 As shown, in order to facilitate the entry and exit of materials, the bottom of the mixing tank 2 is provided with a discharge pipe 5, the discharge pipe 5 is provided with a discharge valve, and the mixing tank 2 is provided with a feed inlet 4 and a liquid inlet 3.

[0035] In this specific embodiment, the tilt angle is 50°; this specific embodiment also includes a controller 7, which is electrically connected to the drive motor 9, and controls and adjusts the speed, forward rotation duration, reverse rotation duration and forward / reverse rotation interval of the drive motor 9. The discharge valve is an electrically controlled valve, and the controller 7 is also electrically connected to the discharge valve.

[0036] The working process of the premixing device in this chemical engineering reactor is as follows:

[0037] First, liquid materials are introduced into mixing tank 2 through inlet 3, and then solid materials are introduced into mixing tank 2 through inlet 4. The drive motor 9 is controlled to rotate forward, stop, and reverse, so that the internal mixture forms a large-scale countercurrent and vortex, which enhances the degree of solid-liquid mixing. After mixing is completed, the sealing cover 1 is opened, the discharge pipe 5 is rotated to the lowest position, the discharge valve is opened, and the mixture is transported to the next container for reaction.

[0038] As can be seen from the above specific embodiments, this utility model has the following beneficial effects:

[0039] 1. By controlling the tilted mixing tank 2 to alternately rotate forward and reverse, a large number of vortices and countercurrents are formed in the liquid inside the mixing tank 2, increasing the amplitude and speed of the flow field inside the mixing tank 2. This can drive the solid materials and liquid inside to be fully mixed, resulting in a better mixing effect. In addition, the liquid has a flushing effect on the inner wall of the mixing tank 2, which can carry away the cementitious materials adhering to the inner wall and prevent material from remaining in the mixing tank 2. Compared with using a mixer mechanism for stirring, the mixing effect is improved, and the failure rate is lower, ensuring production efficiency.

[0040] 2. By controlling the tilt angle between 45° and 60°, the spread area of ​​the mixture in the mixing tank 2 can be increased, so that the weight and inertia of the material act on the positive component of the direction of motion, forming a spiral motion trajectory, thereby continuously exchanging and mixing the material in the four directions of up, down, left and right, and enhancing the mixing effect.

[0041] 3. By setting up a stirring plate with protrusions, the stirring effect on the mixture can be enhanced, thus improving the mixing effect;

[0042] 4. The mixing effect is further enhanced by using a stirring plate.

[0043] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pre-mixing device for a chemical engineering reaction vessel, comprising a base (8) and a mixing tank (2), a sealing cover (1) being arranged on the mixing tank (2), characterized in that, Also include: The driving assembly can drive the mixing tank (2) to rotate around its own axis, the driving assembly includes a driving motor (9), the driving motor (9) can be forward and reverse, the driving motor (9) is arranged on the base (8); Support ring (12), the support ring (12) is arranged on the upper portion of the base (8), the plane of the end face of the support ring (12) exists an inclination angle relative to the vertical plane, the support ring (12) is sleeved on the mixing tank (2), the mixing tank (2) can be inclined to be arranged on the base (8) under the action of support ring (12) and the opening faces the upward direction, the mixing tank (2) can rotate relative to the support ring (12).

2. The pre-mixing device of claim 1, wherein, The driving assembly includes a gear ring (6) and a driving gear (10) engaged with each other, the gear ring (6) is sleeved on the driving cone at the bottom of the mixing tank (2), and the driving gear (10) is connected with the driving motor (9).

3. The pre-mixing device of claim 2, wherein, The outer circumference of the mixing tank (2) is provided with a support groove, the support groove is rotatably provided with the support ring (12), and the inner wall of the support ring (12) is provided with a plurality of support rollers, the support rollers are in abutment with the groove bottom of the support groove.

4. The pre-mixing device of claim 3, wherein, The support ring (12) is vertically provided with a support column (11) on both sides, and the support column (11) is connected with the base (8).

5. The pre-mixing device of claim 4, wherein, The inclination angle is 45°~60°.

6. The pre-mixing device of a chemical engineering reaction vessel according to any one of claims 1 to 5, wherein The bottom of the mixing tank (2) is provided with at least two stirring plates, and the stirring plates are vertically arranged on the bottom surface of the mixing tank (2).

7. The pre-mixing device of claim 6, wherein, The surface of the stirring plate is uniformly provided with a plurality of protrusions.

8. The pre-mixing device of claim 6, wherein, The inner wall of the mixing tank (2) is provided with a plurality of stirring blades, and the plurality of stirring blades are arranged along the circumference of the mixing tank (2).

9. The pre-mixing device of claim 1, wherein, The bottom of the mixing tank (2) is provided with a discharge pipe (5), and the discharge valve is arranged on the discharge pipe (5).

10. The pre-mixing device of claim 9, wherein, The mixing tank (2) is provided with a feeding port (4) and a liquid inlet (3).

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