Novel stirring tank

Abstract

This utility model discloses a novel mixing tank, comprising: a tank body with an opening at the top and a discharge port at the bottom, and fluid channels distributed around the tank body on the tank wall; the fluid channels are equipped with a medium inlet and a medium outlet; a motor installed at the bottom of the tank body; and a stirring unit installed inside the tank body; the stirring unit includes a stirring shaft drivenly connected to the working shaft of the motor, and stirring blades installed on the stirring shaft and extending radially along the tank body; wherein, during the stirring process, the fluid channels are filled with a fluid liquid medium to control the temperature of the tank body and the materials inside within a preset range. The novel mixing tank provided by this utility model can ensure the accuracy of material temperature control while forming a complex material movement trajectory to a certain extent, improving the uniformity of the flow field within the tank and enhancing mixing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mixing equipment technology, and in particular to a novel mixing tank. Background Technology

[0002] In pharmaceuticals, biomaterials preparation and other fields, mixing tanks are the basic equipment for mixing and reacting materials.

[0003] On the one hand, the mixing quality and reaction efficiency of materials are often significantly affected by the operating temperature. Therefore, precise temperature control during the stirring process is a common requirement in many technological processes. On the other hand, in terms of the design of the stirring mechanism, common agitators usually adopt a unidirectional impeller structure, such as inclined blade turbines or spiral belt impellers. Such structures may suffer from insufficient mixing or uneven local temperature distribution when dealing with high-viscosity or heterogeneous materials.

[0004] Therefore, it is necessary to design a device that can improve heat transfer and mixing efficiency. Utility Model Content

[0005] In view of the above situation and to overcome the defects of the prior art, the new mixing tank provided by this utility model can ensure the accuracy of material temperature control while forming a complex material movement trajectory to a certain extent, improving the mixing uniformity of the flow field inside the tank and increasing the mixing efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] This utility model provides a novel mixing tank, comprising:

[0008] The barrel has an opening at the top and a discharge port at the bottom. Fluid channels are formed around the barrel wall. The fluid channels are equipped with a medium inlet and a medium outlet.

[0009] An electric motor is installed at the bottom of the barrel.

[0010] A stirring unit is installed inside the barrel; the stirring unit includes a stirring shaft that is drivenly connected to the motor working shaft, and stirring blades that are installed on the stirring shaft and extend radially along the barrel.

[0011] in,

[0012] During the stirring process, the fluid channel is filled with a fluid liquid medium to control the temperature of the barrel and its internal materials within a preset range.

[0013] Furthermore, the fluid channel extends in a spiral shape along the axial direction of the barrel body.

[0014] Furthermore, the stirring blades include a first blade that tends to cause the material in the barrel to flow downwards, and a second blade that tends to cause the material in the barrel to flow upwards.

[0015] Furthermore, the first blade and the second blade are distributed at intervals.

[0016] Furthermore, the stirring blades are distributed circumferentially along the stirring shaft.

[0017] Furthermore, it includes at least three sets of the aforementioned stirring blades.

[0018] Furthermore, a scraper is installed at the end of the stirring blade away from the stirring shaft; the scraper contacts the inner wall of the barrel and is used to scrape the material stuck to the inner wall of the barrel.

[0019] Furthermore, the side of the scraper that contacts the inner wall of the barrel is coated with polytetrafluoroethylene, and the thickness of the polytetrafluoroethylene is 50~100μm.

[0020] Furthermore, the discharge port is equipped with an electric valve.

[0021] This utility model has at least the following advantages or beneficial effects:

[0022] This invention employs a structure with fluid channels within the barrel wall, which facilitate the introduction of a temperature-controlled medium for heat exchange. It also utilizes a motor-driven stirring blade structure, which promotes material movement and mixing. Overall, this invention achieves the dual function of controlling material temperature and ensuring proper mixing during the stirring process.

[0023] This invention employs a first blade that directs the material downwards and a second blade that directs the material upwards. The blades with different flow directions create an axial circulating flow field within the mixing zone. Overall, this invention improves the axial mixing effect and reduces dead zones in the mixing process.

[0024] This invention employs a structure in which a scraper is installed at the end of the stirring blades. The scraper can remove material adhering to the inner wall of the tank. Overall, this invention can reduce material residue, improve heat transfer, and facilitate cleaning. Attached Figure Description

[0025] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the three-dimensional structure of the new type of mixing tank;

[0027] Figure 2 Top view of the new type of mixing tank;

[0028] Figure 3 This is a schematic diagram of the three-dimensional structure of the stirring unit.

[0029] Figure label:

[0030] 1-Barrel body; 10-Support; 11-Discharge port; 12-Fluid channel; 121-Media inlet; 122-Media outlet; 13-Electric valve;

[0031] 2-Motor;

[0032] 3-Stirring unit; 31-Stirring shaft; 32-Stirring blade; 321-First blade; 322-Second blade; 33-Scraper. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] It should be noted that the following detailed descriptions are exemplary and intended to provide further illustration of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0035] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0036] In this utility model, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the structural relationship between the various parts or elements of this utility model and do not specifically refer to any part or element in this utility model. They should not be construed as limitations on this utility model.

[0037] In this utility model, terms such as "fixed", "connected", and "linked" should be interpreted broadly, indicating that it can be a fixed connection, an integral connection, or a detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. For relevant scientific researchers or technicians in this field, the specific meaning of the above terms in this utility model can be determined according to the specific circumstances, and should not be construed as a limitation of this utility model.

[0038] The embodiments of this utility model will be described in detail below.

[0039] This utility model embodiment discloses a novel mixing tank.

[0040] The fluid channel 12 structure set inside the wall of the tank 1, together with the medium inlet 121 and the medium outlet 122, constitutes an integrated heat exchange system. This structure allows the temperature-controlled medium to flow within the channel and exchange heat with the material through the tank wall. Compared with external jackets or coils, this design provides a more direct heat transfer path and a larger effective heat exchange area, which helps to achieve precise temperature control of the material and meet the process requirements of temperature-sensitive materials. Details are as follows:

[0041] Figure 1 This is a schematic diagram of the three-dimensional structure of the new type of mixing tank; Figure 2 Top view of the new type of mixing tank; Figure 3 This is a schematic diagram of the three-dimensional structure of stirring unit 3.

[0042] The barrel 1 is mounted on the support 10. The upper opening of the barrel 1 is for feeding and observation, while the lower part has a discharge port 11 for discharging materials. The discharge port 11 is equipped with an electric valve 13, which is installed at the discharge port 11 via a flange connection. In this embodiment, the electric valve 13 is a ball valve; in other embodiments, the electric valve can also be a butterfly valve or a gate valve. The function of the electric valve 13 is to automate the material discharge process and improve operational convenience.

[0043] Fluid channels 12, distributed around the inner sidewall of the barrel 1, are formed by casting or machining. The fluid channels 12 are equipped with a medium inlet 121 and a medium outlet 122, which connect to external temperature control equipment to form a circulation pipeline system. In this embodiment, the fluid channels 12 extend spirally along the axial direction of the barrel 1; in other embodiments, the fluid channels 12 may be serpentine or mesh-like. The diameter of the fluid channels 12 is 10 mm, and the spiral spacing is 100 mm. The structure of the fluid channels 12 allows the heat exchange medium to fully exchange heat with the barrel wall, thereby achieving precise temperature control of the material and meeting the process requirements of temperature-sensitive materials.

[0044] The motor 2 is installed at the bottom of the tank 1 via a flange connection, and its function is to provide power to the stirring unit 3. In this embodiment, the motor 2 is installed vertically; in other embodiments, the motor 2 may also be installed on the side or top.

[0045] The stirring unit 3 is installed inside the tank body 1. The stirring unit 3 includes a stirring shaft 31 that is connected to the working shaft of the motor 2 via a coupling, and stirring blades 32 that are mounted on the stirring shaft 31 via a key connection and extend radially along the tank body 1.

[0046] The stirring shaft 31 is made of solid stainless steel and has a diameter of 50mm. Its function is to transmit the rotational motion of the motor to the stirring blades 32.

[0047] The stirring blades 32 include a first blade 321 that tends to direct the material in the tank downwards, and a second blade 322 that tends to direct the material in the tank upwards. The first blade 321 and the second blade 322 are spaced apart, which helps to create a complex flow field distribution inside the tank. In this embodiment, the first blade 321 and the second blade 322 are inclined at a 45-degree angle; in other embodiments, the inclination angle of the first blade 321 and the second blade 322 can also be adjusted between 30 degrees and 60 degrees. The stirring blades 32 are distributed circumferentially along the stirring shaft 31, which can enhance the radial mixing effect. In this embodiment, three sets of stirring blades 32 are provided; in other embodiments, the number of stirring blades 32 can also be four or five sets, and the specific number can be adjusted according to the volume of the tank 1 and the characteristics of the material.

[0048] In addition, a scraper 33 is installed at the end of the stirring blade 32 away from the stirring shaft 31, and the scraper 33 is fixed to the stirring blade 32 by bolt connection. The scraper 33 slides in contact with the inner wall of the barrel 1, and its function is to scrape the material stuck to the inner wall of the barrel 1 during the stirring process, preventing material adhesion. The side of the scraper 33 in contact with the inner wall of the barrel 1 is coated with polytetrafluoroethylene (PTFE), which is processed by spray coating and has a thickness of 50 μm; in other embodiments, the thickness of PTFE can also be selected between 50 μm and 100 μm. The function of the PTFE coating is to reduce the coefficient of friction between the scraper 33 and the inner wall of the barrel 1, thereby reducing wear.

[0049] Specifically, the spiral design of the fluid channel 12 increases the heat exchange area and improves heat exchange efficiency. The design of the stirring blades 32 and scraper 33 with different flow directions promotes the circulation of materials within the tank, reduces mixing dead zones, and keeps the tank walls clean, which helps maintain stable heat transfer efficiency. Furthermore, the PTFE-coated scraper 33 reduces frictional resistance and lowers power consumption. The electric valve 13 improves the automation level of the equipment and facilitates integration into the production line control system.

[0050] Overall, this invention combines a fluid channel 12 inside the barrel 1 with a stirring unit 3 with a special structure, which can achieve precise temperature control and uniform mixing of materials during the stirring process to a certain extent. It can improve the mixing effect of high-viscosity materials and has a certain positive effect in the fields of pharmaceutical and biomaterial preparation.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A novel mixing tank, characterized in that, include: The barrel (1) has an opening at the top and a discharge port (11) at the bottom. Fluid channels (12) are formed on the barrel wall and distributed around the barrel (1). The fluid channels (12) are equipped with a medium inlet (121) and a medium outlet (122). The motor (2) is installed at the bottom of the barrel (1); A stirring unit (3) is installed inside the barrel (1); the stirring unit (3) includes a stirring shaft (31) that is drivenly connected to the working shaft of the motor (2), and stirring blades (32) that are installed on the stirring shaft (31) and extend radially along the barrel (1). in, During the stirring process, the fluid channel (12) is filled with a fluid liquid medium to control the temperature of the barrel (1) and its internal materials within a preset range.

2. The novel mixing tank according to claim 1, characterized in that, The fluid channel (12) extends in a spiral shape along the axial direction of the barrel (1).

3. The novel mixing tank according to claim 1, characterized in that, The stirring blade (32) includes a first blade (321) that causes the material in the barrel to flow downwards, and a second blade (322) that causes the material in the barrel to flow upwards.

4. The novel mixing tank according to claim 3, characterized in that, The first blade (321) and the second blade (322) are distributed alternately.

5. The novel mixing tank according to claim 3, characterized in that, The stirring blades (32) are distributed circumferentially along the stirring shaft (31).

6. The novel mixing tank according to claim 3, characterized in that, It includes at least three sets of the aforementioned stirring blades (32).

7. The novel mixing tank according to any one of claims 3 to 6, characterized in that, A scraper (33) is installed at one end of the stirring blade (32) away from the stirring shaft (31); the scraper (33) contacts the inner wall of the barrel (1) and is used to scrape the material stuck to the inner wall of the barrel (1).

8. The novel mixing tank according to claim 7, characterized in that, The scraper (33) is coated with polytetrafluoroethylene on the side that contacts the inner wall of the barrel (1), and the thickness of the polytetrafluoroethylene is 50~100μm.

9. The novel mixing tank according to claim 1, characterized in that, The discharge port (11) is equipped with an electric valve (13).

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