Solid-liquid mixing stirring kettle with laterally-arranged motor

Abstract

The invention belongs to the technical field of stirring kettles, and discloses a solid-liquid mixing stirring kettle with a laterally-arranged motor, which comprises a reaction kettle, a sealing assembly (a sealing head and a flange), a transmission mechanism, a sealing cylinder assembly, a coaxial different-direction paddle assembly and a push type paddle structure, the rotating motor is mounted on the side surface of the reaction kettle, and drives the coaxial different-direction paddle assembly and the push type paddle to rotate through gear transmission. The motor is placed on the side surface of the stirring kettle body, so that the problem that the stirring kettle has to be abandoned due to insufficient height space is solved, and the usable working places of the stirring kettle are increased. According to the stirring device, the blades which rotate coaxially in different directions are used, internal circular flow of materials among the blades is realized through the blades which rotate in different directions, and meanwhile, downward flow of the materials can be realized through the push-type blades arranged above, so that the stirring speed is increased, and the stirring efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of stirring kettles, and in particular relates to a solid-liquid mixing stirring kettle with a motor placed sideways. Background Art

[0002] Mixing kettles play a vital role in the chemical, pharmaceutical, food and other industries. They perform well in material mixing, chemical reaction promotion and heat transfer. They can evenly mix materials of different phases and multiple components, significantly accelerate the chemical reaction rate and ensure the uniform reaction, and effectively enhance the heat transfer effect to achieve uniform temperature distribution. However, mixing kettles also have significant defects. They take up too much space in terms of height. This feature puts high demands on the spatial planning of production sites. Especially in some factories or workshops with limited space height, the installation and layout of mixing kettles will face many inconveniences and restrictions, and the overall space layout needs to be specially designed or adjusted. In some extreme cases, due to insufficient height space, the use of mixing kettles has to be abandoned, and other alternative equipment or process solutions have to be sought, which to a certain extent affects its wide applicability and flexibility in specific scenarios.

[0003] If the paddles of the stirring kettle can only rotate in one direction, it will bring many adverse effects. First, in terms of material mixing, unidirectional rotation can easily cause the material to form a vortex with a fixed flow direction, resulting in uneven distribution of the material in the kettle. In the heat transfer process, unidirectional rotation is not conducive to the uniform transfer of heat in the material. Since heat transfer depends on the flow of materials, the relatively single flow pattern formed by unidirectional rotation will cause local heat transfer to be too fast or too slow, resulting in a large temperature gradient inside the material. For example, in some temperature-sensitive chemical reactions, this causes excessive differences in local reaction rates, produces side reactions, and reduces the yield of the target product. From the perspective of equipment wear, the continuous rotation of the paddle in one direction will cause the force between the paddle and the material to always be concentrated in the same direction, resulting in increased local wear of the paddle. At the same time, the stirring shaft will also be subjected to additional stress due to uneven force, increasing the risk of bending and deformation of the shaft, shortening the service life of the equipment, increasing the maintenance cost of the equipment and the frequency of shutdown maintenance, and seriously affecting the continuity and economy of production.

[0004] Through the above analysis, the problems and defects of the prior art are as follows:

[0005] If the paddles of the stirring kettle can only rotate in one direction, it will bring many adverse effects. First, in terms of material mixing, unidirectional rotation will easily cause the material to form a vortex with a fixed flow direction, resulting in uneven distribution of the material in the kettle. In the heat transfer process, unidirectional rotation is not conducive to the uniform transfer of heat in the material. Summary of the invention

[0006] In view of the problems existing in the prior art, the present invention provides a solid-liquid mixing stirring kettle with a motor placed on its side.

[0007] The present invention is achieved by a solid-liquid mixing stirring kettle with a motor placed on its side, comprising:

[0008] The reactor also includes a sealing assembly (head, flange), a transmission mechanism, a sealing cylinder assembly, a coaxial and angular blade assembly, and a propulsion blade structure; the rotating motor is installed on the side of the reactor, and drives the coaxial and angular blade assembly and the propulsion blade to rotate through gear transmission.

[0009] Furthermore, the propulsion blade and the stirring shaft are connected by a key.

[0010] Furthermore, the coaxial and angular blade structure includes on-axis blades and short turbine blades.

[0011] Furthermore, the short turbine blades and the bevel gear are connected by a key.

[0012] Furthermore, the turbine blades are sleeved on the stirring shaft, the sealing cylinder assembly and the reactor body are connected and fixed with bolts, the turbine coaxial and angular blade assembly and the propulsion blade structure are placed in the sealing cylinder, and only the blade structure is exposed for stirring.

[0013] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solutions to be protected by the present invention are as follows:

[0014] First, the motor is installed on the side of the stirring tank body, which effectively solves the problem of being unable to install the stirring tank due to the height limitation of the equipment. This design not only reduces the overall height requirement of the equipment, but also enables the stirring tank to adapt to more places with limited space, such as low-rise factories or laboratory environments, thus significantly expanding the application range of the equipment.

[0015] The paddle structure adopts coaxial and skewed rotation. The upper and lower paddles rotate in different directions, and the materials circulate internally between the paddles through cooperation. The push-type paddles on the top push the materials downward, effectively avoiding material accumulation, accelerating the mixing speed, and ensuring mixing uniformity. This design significantly improves the mixing efficiency and meets the needs of efficient production.

[0016] The sealing assembly of the stirring kettle is connected to the kettle body by bolts, avoiding the limitation of the overall welding structure. When the sealing assembly fails or ages, the sealing assembly can be directly disassembled and replaced without replacing the entire kettle structure. This design greatly reduces the maintenance cost, simplifies the maintenance process, and improves the operability and service life of the equipment.

[0017] Second, the technical solution of the present invention solves the technical problems that people have been eager to solve but have never been able to solve successfully:

[0018] In the field of traditional mixing kettles, when the motor part of the transmission mechanism is damaged, it is often necessary to lift the vertically placed motor with a tower crane, which is time-consuming and labor-intensive and requires a large operating space. The present invention greatly reduces the operating space by placing the motor on its side and makes dismantling more convenient.

[0019] Third, the present invention overcomes the problem that the traditional stirring kettle cannot be used when the height space is limited by placing the motor on the side and adopting the coaxial and skewed blade design, which greatly expands the applicable scenarios of the stirring kettle. For example, in the installation of equipment in basements, low-rise factories or limited spaces, the side-discharge motor design of the present invention effectively solves the problem of limited space while ensuring the efficient operation of the equipment.

[0020] The blade design of the traditional stirring kettle is often difficult to achieve full mixing of materials. The present invention significantly improves the stirring efficiency through the combined design of coaxial and counter-rotating blades and pusher blades. The pusher blades push the materials quickly from top to bottom, while the counter-rotating turbine blades form a strong circulation flow in the middle, thereby achieving uniform mixing of the upper and lower layers of materials in the kettle, reducing the mixing time and improving the stirring effect.

[0021] The present invention adopts a modular design, and the sealing assembly and the kettle body are connected by bolts, which is convenient for disassembly and replacement of sealing components, thereby reducing maintenance costs. At the same time, the sealing cylinder assembly improves the stability and service life of the stirring shaft through efficient sealing design and bearing support. Compared with the traditional welding overall design of the stirring kettle, the design of the present invention is more maintainable, prolongs the service life of the equipment, and has significant technical progress and application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of a solid-liquid mixing kettle with a motor placed on its side provided in an embodiment of the present invention.

[0023] Figure 2 It is the overall structural diagram of the coaxial and counter-rotating structure of the stirring kettle of the present invention.

[0024] Figure 3 It is a partial enlarged view of the part P1 of the transmission structure 3 of the stirring tank of the present invention.

[0025] Figure 4 It is a partial enlarged view of the meshing portion P2 of the bevel gear 305 in the transmission structure of the stirring tank of the present invention.

[0026] Figure 5 It is a partial enlarged view of the connection portion P3 between the stirring shaft 601 and the sealing cylinder assembly 5 of the present invention.

[0027] Figure 6 It is a partial enlarged view of the connection portion P4 between the stirring shaft and the paddle 602 of the present invention.

[0028] Figure 7 It is a cross-sectional view and a schematic diagram of the key connection portion P5 between the bevel gear 307 and the blade 602 of the present invention.

[0029] Figure 8 It is a principle diagram of the coaxial and counter-rotating structure of the stirring kettle of the present invention.

[0030] In the figure: 1. sealing assembly (head, flange); 2. tank body; 3. transmission mechanism; 4. propulsion blade structure; 5. sealing cylinder assembly; 6. coaxial and angular blade assembly; 102. head; 103, 105. flange; 104. gasket; 301. input shaft; 302. gasket; 303. bearing; 304. sleeve; 305. side bevel gear; 306, 307. bevel gear; 502, 509. bearing end cover; 503, 508. oil seal gasket; 504, 507. stirring shaft bearing; 505, 506. sleeve; 601. stirring shaft; 602. short turbine blade; 603. blade on the shaft. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0032] Example 1: High-efficiency solid-liquid mixing and stirring for the pharmaceutical industry

[0033] In the pharmaceutical industry, powders and liquid medicines of different components need to be efficiently mixed to prepare drug suspensions. The motor side-mounted stirring kettle of the present invention is suitable for the strict requirements of drug preparation due to its compact design and efficient stirring performance.

[0034] Operation process: After the liquid medicine and powder are added to the reactor through the feed port, the motor starts to drive the propulsion blade and the coaxial counter-rotating blade. The propulsion blade pushes the liquid medicine to flow rapidly from top to bottom, and the counter-rotating blade at the bottom forms a strong circulation stirring to ensure that the powder is fully dispersed and dissolved in the liquid in a short time.

[0035] This design significantly improves the uniformity of solid-liquid mixing, shortens the mixing time, and avoids precipitation and agglomeration, ensuring the quality consistency of the drug solution and meeting the pharmaceutical industry's requirements for efficiency and safety.

[0036] Example 2: Dairy product production for food processing

[0037] In the production process of dairy products, liquid milk and other additives (such as sugar and stabilizers) need to be fully mixed. The stirring kettle of the present invention is particularly suitable for use in a dairy product production line due to its efficient circulation stirring function and maintenance convenience.

[0038] Operation process: After liquid milk and other additives are added to the reactor, the motor drives the stirring device to start working. The propulsion blades push the liquid to flow quickly to the bottom of the reactor, and the turbine blades at the bottom and the middle counter-rotating blades form a strong circulation flow to ensure that the additives are evenly distributed in the liquid.

[0039] During the mixing process, the fluidity of the materials is enhanced, the mixing efficiency is significantly improved, and the deposition of additives can be effectively avoided. In addition, the modular design facilitates quick cleaning and maintenance, meeting the high standards of hygiene conditions in the food industry.

[0040] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, an embodiment of the present invention provides a solid-liquid mixing stirring kettle with a motor placed on its side, comprising:

[0041] The reactor also includes a sealing assembly (head, flange) 1, a transmission mechanism 3, a sealing cylinder assembly 5, a coaxial and angular blade assembly 6, and a propulsion blade structure 4; the rotating motor is installed on the side of the reactor, and drives the coaxial and angular blade assembly 6 and the propulsion blade 4 to rotate through gear transmission.

[0042] The present invention installs the motor on the side of the reactor, and the output shaft of the motor is connected to the bevel gear 305 in the transmission mechanism. When the motor is running, the output shaft drives the bevel gear 305 to rotate, and then drives the coaxial and skew blade assembly 6 and the propulsion blade structure 4 to rotate through gear transmission. This design not only saves vertical space, but also ensures the stability of the motor installation, providing reliable power for stirring the reactor.

[0043] The propulsion blade 4 is connected to the bevel gear 307 through the stirring shaft 601 and rotates in a counterclockwise direction. When the propulsion blade rotates, an axial thrust is generated to push the material on the top of the kettle downward. The material flows quickly to the bottom of the reactor, avoiding the problem of stagnation and accumulation of the material in the upper layer, thereby enhancing the mixing effect. This design effectively accelerates the circulation of the upper and lower layers of material and improves the stirring efficiency.

[0044] The coaxial and counter-rotating blade assembly 6 located inside the sealed cylinder assembly 5 includes a short turbine blade 602 and an on-shaft blade 603. The two blades are connected by a key on the shaft and rotate in opposite directions. The turbine blade 603 at the lower layer rotates coaxially and in the same direction as the propulsion blade 4, while the short turbine blade 602 in the middle rotates in the opposite direction. The relative movement of the two turbine blades forms an internal circulation flow of the material, which strengthens the uniform mixing of the material in the kettle.

[0045] The sealing cylinder assembly 5 is fixed to the reactor body 2 by bolts to ensure the stable operation of the stirring shaft 601 and the blade structure. The bearings (504, 507) and oil seals (503, 508) in the assembly effectively reduce the friction and wear of the stirring shaft and prevent the leakage of materials. At the same time, the sealing assembly (head 102, flange 103, 105) and gasket 104 further improve the sealing performance of the system, ensuring an efficient and stable stirring process and a long life of the equipment.

[0046] like Figure 6 , Figure 7 , Figure 8 As shown, the propulsion blade and the stirring shaft 601 are connected by a key, the coaxial and counter-rotating blade structure includes an on-shaft blade 603 and a short turbine blade 602, the short turbine blade 602 and the bevel gear 307 are connected by a key, and the turbine blade 602 is sleeved on the stirring shaft 601, the sealing cylinder assembly and the reactor body are connected and fixed with bolts, the section turbine coaxial and counter-rotating blade assembly and the propulsion blade structure are placed in the sealing cylinder, and only the blade structure is exposed for stirring.

[0047] When the motor is running, the output shaft starts to drive the bevel gear 305 to rotate. Furthermore, looking from above, the propulsion blade 4 above the sealing cylinder will rotate counterclockwise, thereby driving the material to flow axially, causing the material above the reactor body to flow downward and quickly reach the bottom. At the same time, since the turbine blade 603 at the bottom and the propulsion blade are on the same axis, the rotation directions of the two are the same, and the turbine blade 602 in the middle will move in the opposite direction to the bottom blade, further realizing the circulation of the material between the two turbine blades, and finally achieving sufficient stirring of the entire material in the reactor body.

[0048] The working mode of the present invention is:

[0049] (1) Add the material into the kettle through the feed port and start stirring.

[0050] (2) The motor starts to drive the bevel gear to rotate, which in turn drives the upper propulsion blade to rotate clockwise, further driving the material to flow axially and quickly reach the bottom.

[0051] (3) At the same time, the two turbine blades at the bottom begin to rotate in opposite directions, so that a circulating flow is formed between the turbine blades, thereby improving the stirring efficiency.

[0052] The specific application field of the present invention is side-entry stirred tanks. Existing related products include EKATO's standard side-entry agitator ES-V and rotatable side-entry agitator ES-SW, which are mainly designed for liquid storage tanks of any size, especially crude oil storage tanks.

[0053] 1. Specific application fields or related products of the present invention

[0054] The present invention is suitable for the design and improvement of side-entry stirred tanks, especially in scenarios where efficient mixing is required in industrial production. Side-entry stirred tanks are widely used in industries such as petrochemicals, food processing, pharmaceuticals, and material processing, such as stirring and mixing of crude oil storage tanks, homogenization of high-viscosity liquids, and solid-liquid mixing reactions. Existing related products, such as EKATO's ES-V standard side-entry agitator and ES-SW rotatable side-entry agitator, are mainly designed for mixing operations in large liquid storage tanks. However, the stirring efficiency of these products has room for improvement under complex material conditions. The present invention not only improves the stirring efficiency, but also significantly enhances the processing capacity of multi-phase materials through the unique combination design of propulsion blades and coaxial and angular turbine blades, expanding the application range of side-entry stirred tanks.

[0055] II. Evidence of technical effects obtained by the embodiments of the present invention

[0056] 1. Improved mixing efficiency

[0057] By combining the propulsion blades and the coaxial counter-rotating turbine blades, the upper propulsion blades push the material to the bottom, forming a strong axial flow. The bottom turbine blades rotate in counter-rotating directions, forming a circulating flow between the two, significantly enhancing the mixing efficiency of the material. Experimental data shows that compared with traditional side-entry stirred tanks, the stirring efficiency is greatly improved, especially in high-viscosity liquid and solid-liquid mixing scenarios.

[0058] 2. Enhanced adaptability to multiphase materials

[0059] The invention optimizes the design of the stirring shaft, combines the sealing component and the blade structure, and effectively processes materials of different densities and different phases. Experiments have shown that in a mixture containing solid particles or bubbles, the stirring kettle can achieve uniform mixing and avoid the phenomenon of particle sedimentation and bubble aggregation.

[0060] 3. Save energy and reduce equipment wear

[0061] By optimizing the transmission mechanism and blade design, the present invention reduces the energy consumption of the motor, and the operating power is significantly reduced compared with the traditional design. At the same time, the application of sealed cylinder components and high-quality bearings reduces the wear of the equipment during operation and prolongs the life of the equipment.

[0062] 4. Expand application scenarios

[0063] Since the invention solves the limitation of insufficient height space, the side-entry design makes the stirred tank suitable for more narrow space scenarios, such as underground storage tanks, modular factories, etc. This flexibility provides more for enterprise equipment selection, further improving the market competitiveness and economic benefits of the device.

[0064] The above description is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any modifications, equivalent substitutions and improvements made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims

1. A solid-liquid mixing kettle with a motor placed on its side, characterized in that: include: Reactor, sealing assembly, transmission mechanism, sealing cylinder assembly, coaxial and angular blade assembly, and propulsion blade structure; The motor of the reactor is installed on the side of the reactor body, and drives the coaxial and angular blade components and the propulsion blade structure to rotate through the bevel gear of the transmission mechanism, so as to achieve mixing of the materials in the reactor body.

2. The solid-liquid mixing stirred tank with the motor placed sideways as claimed in claim 1, characterized in that: The propulsion blade and the stirring shaft are connected by a key and are driven to rotate by the gear of the transmission mechanism to realize the axial flow of the material.

3. The solid-liquid mixing stirred tank with the motor placed sideways as claimed in claim 1, characterized in that: The coaxial and counter-rotating blade assembly comprises short turbine blades and shaft blades, wherein the short turbine blades are coaxially installed with the propulsion blades, but the rotation direction of the short turbine blades is opposite to that of the shaft blades.

4. The solid-liquid mixing stirred tank with the motor placed sideways as claimed in claim 1, characterized in that: The short turbine-type blade is connected to the bevel gear through a key, and the bevel gear transmits power through a transmission mechanism to drive the blade to rotate.

5. The solid-liquid mixing stirred kettle with the motor placed sideways as claimed in claim 1, characterized in that: The turbine blades are sleeved on the stirring shaft, and the turbine blades and the propeller blades are respectively arranged at different height positions of the sealing cylinder assembly to realize the upper and lower layers of the material in the kettle body.

6. The solid-liquid mixing stirred kettle with the motor placed sideways as claimed in claim 1, characterized in that: The sealing cylinder assembly is fixedly connected to the outside of the reactor body by bolts, and the sealing cylinder assembly is provided with bearings and oil seals for supporting and sealing the stirring shaft.

7. The solid-liquid mixing stirred kettle with the motor placed sideways as claimed in claim 1, characterized in that: The sealing assembly comprises a sealing head, a flange and a gasket, which are fixedly connected to the kettle body of the reactor by bolts to ensure the sealing performance of the kettle body and prevent material leakage.

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