A constant temperature jacket type stirring tank for non-ionic surfactant

Abstract

The utility model relates to the technical field of chemical equipment, concretely to a constant-temperature jacketed stirring storage tank for non-ionic surfactant, solves the problem raised in the background art, it includes the tank body, the tank body is equipped with the clamping sleeve, the stirring shaft of tank body top wear is equipped with from top to bottom, at least one layer of auxiliary paddle and main stirring paddle, the observation cavity of tank body lateral wall is equipped with transparent observation window, the pivot one end of observation cavity is equipped with detection paddle, and the other end is fixedly equipped with hand wheel. The utility model, through auxiliary paddle can produce strong upward axial flow, can directly and effectively destroy liquid surface center vortex, reduces the problem that air is inhaled and generates foam, through hand wheel drive detection paddle rotation can directly perceive the viscosity change of material, improves the operation safety, the scraper made of heat sensitive material can increase scraping force or reduce gap when the tank wall is locally overheated, thereby strengthens the heat exchange of the area, improves the uniformity and reliability of temperature control.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, specifically to a constant temperature jacketed stirred storage tank for nonionic surfactants. Background Technology

[0002] Nonionic surfactants are an important class of chemical products widely used in detergents, textiles, cosmetics, and other fields. During storage, these materials typically exhibit high viscosity and are highly susceptible to temperature changes. When the solution is heated to a specific temperature, precipitation and stratification occur due to a sharp decrease in solubility, leading to product failure. Furthermore, during stirring, medium- to high-viscosity materials easily form stable eddies at the center of the liquid surface, entraining large amounts of air and generating persistent foam. This not only reduces the effective volume of the storage tank but may also affect the product quality of subsequent processes. Currently, storage tanks for such materials often combine a thermostatic jacket with mechanical stirring. However, conventional stirring blades are insufficient to effectively disrupt surface eddies, resulting in limited anti-foaming effects. Temperature control relies primarily on the tank wall jacket and external electronic sensors, which suffer from limitations such as single monitoring points, potential for localized material denaturation due to overheating, reliability and maintenance costs in humid and explosive industrial environments, material adhesion affecting heat transfer, and moisture absorption. Therefore, this paper proposes a thermostatic jacketed stirred storage tank for nonionic surfactants. Utility Model Content

[0003] To solve the above problems, this utility model provides the following technical solution:

[0004] A constant-temperature jacketed stirred storage tank for nonionic surfactants includes a tank body with a jacket on the outside of the tank body. A sealed medium cavity is provided between the jacket and the outer wall of the tank body. A stirring shaft is vertically inserted through the top of the tank body. One end of the stirring shaft outside the tank body is connected to a drive motor via a coupling. A main stirring blade is provided at the end of the stirring shaft. At least one layer of auxiliary blades is coaxially fixed on the stirring shaft, and the auxiliary blades are located above the main stirring blades. An observation cavity is provided on the side wall of the tank body. The inner opening of the observation cavity communicates with the inside of the tank body. A transparent observation window is provided on the observation cavity. A rotating shaft is provided through the two side walls of the observation cavity via a bearing. A detection blade is fixed at one end of the rotating shaft that extends into the tank body, and a handwheel is fixed at the other end that extends out of the tank body. A circulation pipeline is connected between the outlet and inlet of the medium cavity. A circulation pump and a heat exchanger are connected in series on the circulation pipeline.

[0005] Furthermore, the blade plane of the auxiliary blade forms an angle of 40° to 60° with the horizontal plane, and the chord of the auxiliary blade forms an acute angle with its radius of rotation.

[0006] Furthermore, the plane of the detection blade forms an angle of 30° to 60° with the axis of the rotating shaft.

[0007] Furthermore, the main stirring blade is an anchor-type or frame-type stirring blade, and a scraper is provided on the edge of the main stirring blade. The gap between the working surface of the scraper and the inner wall of the tank is 0.5mm to 5mm.

[0008] Furthermore, the scraper is made of a bimetallic strip or a shape memory alloy, and its first form at a first temperature is different from its second form at a second temperature, wherein the second temperature is greater than the first temperature, and the contact pressure between the scraper and the inner wall of the tank in the second form is greater than that in the first form, or the gap between the scraper and the inner wall of the tank is smaller than that in the first form.

[0009] Furthermore, a respirator is provided on the top of the tank, and the respirator is filled with desiccant.

[0010] Furthermore, a level gauge is installed through the side wall of the tank, and the probe of the level gauge extends into the tank.

[0011] Furthermore, the tank is equipped with a CIP cleaning ball connected to an external cleaning pipeline.

[0012] Furthermore, the outer sides of the tank body and jacket are covered with an insulation layer.

[0013] Furthermore, the drive motor is a variable frequency motor.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] The auxiliary blades generate a strong upward axial flow, which can directly and effectively disrupt the eddy current at the center of the liquid surface, reducing the problem of air entrainment and foam formation. The handwheel-driven blade rotation can directly sense changes in the viscosity of the material, improving operational safety. The scraper, made of heat-sensitive material, can increase the scraping force or reduce the gap when the tank wall is locally overheated, thereby enhancing heat exchange in that area and improving the uniformity and reliability of temperature control. The integrated design of the drying breather, insulation layer, CIP cleaning and other auxiliary features provides a moisture-proof, constant temperature and easy-to-maintain storage environment for the material, which helps to maintain the chemical stability and performance of nonionic surfactants. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0017] Figure 1 This is a schematic diagram of the isometric sectional view of the jacket structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cross-sectional structure of the front view of this utility model;

[0019] Figure 3 This is a schematic diagram of the isometric view structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the auxiliary blade isometric structure of this utility model;

[0021] Figure 5 This is a side sectional view of the liquid level gauge of this utility model.

[0022] Figure 6 This is a top sectional view of the jacket structure of this utility model.

[0023] In the diagram: 1. Tank body; 2. Jacket; 3. Stirring shaft; 4. Drive motor; 5. Main stirring blade; 6. Auxiliary blade; 7. Observation chamber; 8. Transparent observation window; 9. Rotating shaft; 10. Detection blade; 11. Handwheel; 12. Circulation pump; 13. Heat exchanger; 14. Scraper; 15. Breather; 16. Level gauge; 17. CIP cleaning ball; 18. Insulation layer. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] Example 1

[0026] like Figure 1-6 As shown, this embodiment provides a constant temperature jacketed stirred tank for nonionic surfactants, which can effectively prevent the generation of eddies and foam during stirring, and has mechanical cloud point warning and adaptive wall scraping functions, thereby significantly improving the working reliability, product stability and operational safety of the tank.

[0027] Specifically, a constant-temperature jacketed stirred storage tank for nonionic surfactants includes a tank body 1, a jacket 2 on the outside of the tank body 1, a sealed medium cavity between the jacket 2 and the outer wall of the tank body 1, a stirring shaft 3 vertically passing through the top of the tank body 1, a drive motor 4 connected to one end of the stirring shaft 3 outside the tank body 1 via a coupling, a main stirring blade 5 at the end of the stirring shaft 3, at least one layer of auxiliary blades 6 coaxially fixed on the stirring shaft 3, the auxiliary blades 6 being located above the main stirring blades 5, an observation cavity 7 opened on the side wall of the tank body 1, the inner opening of the observation cavity 7 communicating with the inside of the tank body 1, a transparent observation window 8 on the observation cavity 7, a rotating shaft 9 passing through the two side walls of the observation cavity 7 via a bearing, a detection blade 10 fixed at one end of the rotating shaft 9 extending into the tank body 1, a handwheel 11 fixed at the other end extending out of the tank body 1, a circulation pipeline connecting the outlet and inlet of the medium cavity, a circulation pump 12 and a heat exchanger 13 connected in series on the circulation pipeline.

[0028] Furthermore, the blade plane of the auxiliary blade 6 forms an angle of 40° to 60° with the horizontal plane, and its chord line forms an acute angle with its radius of rotation. When the stirring shaft 3 rotates, the auxiliary blade 6 causes the liquid in the tank to generate a strong, obliquely upward axial flow, thereby effectively cutting and destroying the vortex at the center of the liquid surface generated by the main stirring blade 5, avoiding the problem of air being continuously entrained and generating a large amount of stable foam.

[0029] The plane of the detection blade 10 forms an angle of 30° to 60° with the axis of the rotating shaft 9. When the operator turns the handwheel 11, the detection blade 10 is driven to rotate in the observation chamber 7 filled with material. If the temperature of the material in the tank is normal and the viscosity is low, the rotation resistance is small. Conversely, the rotation resistance of the handwheel 11 will increase, providing the operator with an intuitive warning signal that does not rely on electronic sensors.

[0030] The main stirring blade 5 is an anchor-type or frame-type stirring blade. In this embodiment, the anchor-type is selected. Its edge is provided with a scraper 14. The gap between the working surface of the scraper 14 and the inner wall of the tank 1 is set to 0.5mm to 5mm. It can scrape off the material attached to the wall during operation. In particular, the scraper 14 is made of a temperature-sensitive bimetallic strip or shape memory alloy. When the temperature of the material in the tank is within the normal operating range at the first temperature, the scraper 14 maintains its first shape and maintains the gap with the tank wall. When the tank wall is locally overheated due to uneven heat exchange or control failure at the second temperature, the scraper 14 will change to the second shape due to the thermal deformation characteristics of the material. This increases the contact pressure between it and the inner wall of the tank 1 or reduces the gap, thereby enhancing the scraping and heat exchange effect, promoting temperature balance, and preventing local deformation of the material.

[0031] In addition, the top of the tank 1 is equipped with a breather 15 filled with desiccant to prevent external moisture from entering and causing the nonionic surfactant to absorb moisture. A level gauge 16 is installed through the side wall of the tank 1, with its probe extending into the tank to monitor the material level in real time. The tank 1 is also equipped with a CIP cleaning ball 17, which is connected to an external cleaning pipeline for easy internal cleaning. The tank 1 and the jacket 2 are covered with an insulation layer 18 to reduce heat loss and improve the constant temperature efficiency. Preferably, the drive motor 4 is a variable frequency motor so that the stirring speed can be adjusted according to the process requirements.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A constant-temperature jacketed stirred storage tank for nonionic surfactants, characterized in that, The system includes a tank body (1), with a jacket (2) on the outside of the tank body (1). A sealed medium cavity is provided between the jacket (2) and the outer wall of the tank body (1). A stirring shaft (3) is vertically inserted through the top of the tank body (1). A drive motor (4) is connected to one end of the stirring shaft (3) outside the tank body (1) via a coupling. A main stirring blade (5) is provided at the end of the stirring shaft (3). At least one layer of auxiliary blades (6) is coaxially fixed on the stirring shaft (3). The auxiliary blades (6) are located above the main stirring blades (5). An observation chamber (7) is provided on the side wall of the container. The inner end of the observation chamber (7) is connected to the inside of the tank (1). A transparent observation window (8) is provided on the observation chamber (7). A rotating shaft (9) is provided between the two side walls of the observation chamber (7) through a bearing. A detection paddle (10) is fixed at one end of the rotating shaft (9) that extends into the tank (1), and a handwheel (11) is fixed at the other end that extends out of the tank (1). A circulation pipeline is connected between the outlet and inlet of the medium chamber. A circulation pump (12) and a heat exchanger (13) are connected in series on the circulation pipeline.

2. The constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The blade plane of the auxiliary blade (6) forms an angle of 40° to 60° with the horizontal plane, and the chord of the auxiliary blade (6) forms an acute angle with its radius of rotation.

3. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The plane of the detection blade (10) forms an angle of 30° to 60° with the axis of the rotating shaft (9).

4. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The main stirring blade (5) is an anchor-type or frame-type stirring blade. The edge of the main stirring blade (5) is provided with a scraper (14). The gap between the working surface of the scraper (14) and the inner wall of the tank (1) is 0.5 mm to 5 mm.

5. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 4, characterized in that: The scraper (14) is made of bimetallic strip or shape memory alloy. Its first form at a first temperature is different from its second form at a second temperature. The second temperature is greater than the first temperature. The contact pressure between the scraper (14) and the inner wall of the tank (1) is greater in the second form than in the first form, or the gap between the scraper (14) and the inner wall of the tank (1) is smaller in the first form.

6. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The top of the tank (1) is provided with a respirator (15), and the respirator (15) is filled with desiccant.

7. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: A level gauge (16) is installed through the side wall of the tank (1), and the probe of the level gauge (16) extends into the tank.

8. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The tank (1) is equipped with a CIP cleaning ball (17) connected to an external cleaning pipeline.

9. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The outer sides of the tank (1) and the jacket (2) are covered with a heat insulation layer (18).

10. A constant-temperature jacketed stirred storage tank for nonionic surfactants according to claim 1, characterized in that: The drive motor (4) is a variable frequency motor.

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