Reaction kettle

Abstract

The invention relates to the technical field of chemical equipment, and discloses a reaction kettle. The reaction kettle comprises a reaction kettle body and a stirring mechanism, the reaction kettle body is provided with a feeding port and a discharging pipe, the stirring mechanism comprises a motor, a stirring shaft and a stirrer, the motor is arranged on the reaction kettle body, the stirring shaft is arranged in the reaction kettle body and connected with the motor, and the stirrer is tubular and arranged on the stirring shaft through a connecting arm. And the plurality of stirrers are uniformly distributed along the circumferential direction of the stirring shaft. According to the reaction kettle, the motor drives the stirring shaft and the stirrer to rotate, and the stirrer stirs feed liquid in the reaction kettle body; when the stirrer rotates, the feed liquid enters the stirrer from the opening in one end of the stirrer and then flows out of the stirrer from the opening in the other end of the stirrer, in the stirring process of the feed liquid, disturbance to the feed liquid is small, foam is basically not formed, the performance of a product is not affected, the product quality is guaranteed, and later subpackaging is facilitated.

Description

TECHNICAL FIELD

[0001] The embodiment of the application relates to the technical field of chemical equipment, in particular to a reaction kettle. BACKGROUND

[0002] The reaction kettle is a device used for chemical reactions, physical and chemical processes, and laboratory research. It is usually made of steel plates with a certain thickness, has high corrosion resistance and high temperature and pressure bearing capacity. It is widely used in pharmaceutical, chemical, food processing and other fields to meet the needs of different processes. According to different process requirements, it can be divided into atmospheric reaction kettle, high-pressure reaction kettle, vacuum reaction kettle and other types. It can contain chemical reactions under high pressure and high temperature conditions, and can be heated or cooled during the reaction process to adjust the reaction rate and product yield. The reaction kettle is widely used in the fields of pharmaceutical, polymer industry, organic synthesis, etc., and is a sharp tool in the chemical industry.

[0003] The reaction kettle is generally provided with a stirring mechanism, which uniformly mixes the material and liquid through stirring.

[0004] The inventor of the present application found that the stirrer of the stirring mechanism is in the form of a blade, which greatly disturbs the product during stirring, and a large amount of foam (bubbles) is generated in the product (material). The company produces a hydrophilic coating product for air conditioner radiators, which has a hydrophilic angle of about 10° and a very low surface tension. It can spread and wet well on the substrate, has excellent adhesion, and the film thickness is only 1-5um, but can achieve corrosion resistance of 480-720h. If a large amount of bubbles (foam) is generated during the production of the hydrophilic coating product in the reaction kettle, the bubbles will contact air and oxidize after floating to the surface of the liquid, which will cause the performance to decrease, and it is also not conducive to packaging and filling. If a defoaming agent is added for defoaming, the defoaming agent will easily affect the spreading and wetting of the product on the substrate and the uniformity of the coating film, causing the coating to be exposed to the bottom or the film thickness to be uneven, resulting in a decrease in corrosion resistance. Therefore, how to prevent the hydrophilic coating product from generating foam during stirring is a technical problem that technicians need to solve urgently. SUMMARY

[0005] The purpose of the present application is to provide a reaction kettle to solve the problems in the background art.

[0006] The embodiment of the present application provides a reaction kettle, which comprises a reaction kettle body and a stirring mechanism.

[0007] The top end of the reaction kettle body is provided with a feeding port, and the bottom is provided with a discharging pipe;

[0008] The stirring mechanism comprises a motor, a stirring shaft and a stirrer.

[0009] The motor is arranged on the reactor body, the stirring shaft is arranged in the reactor body and connected with the motor, and the motor is used for driving the stirring shaft to rotate;

[0010] The stirrer is tubular, the pipe wall of the stirrer is provided with a connecting arm, and the stirrer is arranged on the stirring shaft through the connecting arm;

[0011] A plurality of stirrers are arranged, the plurality of stirrers are uniformly arranged along the circumferential direction of the stirring shaft, and when the stirring shaft rotates, the liquid enters from one end of the stirrer and flows out from the other end.

[0012] Based on the above scheme, the reactor of the present application is provided with a reactor body and a stirring mechanism, the reactor body is provided with a feeding port and a discharging pipe, the stirring mechanism comprises a motor, a stirring shaft and a stirrer, the motor is arranged on the reactor body, the stirring shaft is arranged in the reactor body and connected with the motor, the stirrer is tubular, the pipe wall of the stirrer is provided with a connecting arm, the stirrer is arranged on the stirring shaft through the connecting arm, and a plurality of stirrers are uniformly arranged along the circumferential direction of the stirring shaft. The reactor of the present application, the motor drives the stirring shaft and the stirrer to rotate, and the stirrer realizes the stirring of the liquid in the reactor body; and when the stirrer rotates, the liquid enters the stirrer from one end opening of the stirrer and flows out of the stirrer from the other end opening of the stirrer. In the process of stirring the liquid (product), the disturbance of the stirrer to the liquid is small, the product basically does not form foam (bubbles), the defoaming effect is achieved in a physical way, the performance of the product is not affected, and the subsequent sub-packaging and filling of the product are facilitated.

[0013] In a feasible scheme, the stirrer comprises a large-mouth straight section, a tapered section and a small-mouth straight section;

[0014] The large-mouth straight section and the small-mouth straight section are connected through the tapered section;

[0015] When the stirring shaft rotates, the liquid enters from the large-mouth straight section and flows out from the small-mouth straight section.

[0016] In a feasible scheme, the stirring mechanism further comprises a connecting sleeve ring;

[0017] The connecting sleeve ring is sleeved on the stirring shaft, and the connecting arm is arranged on the connecting sleeve ring.

[0018] In a feasible scheme, the stirring mechanism further comprises a set screw;

[0019] The connecting sleeve ring is provided with a threaded hole;

[0020] The set screw is engaged on the threaded hole, and is used for fixing the connecting sleeve ring on the stirring shaft.

[0021] In a feasible solution, the stirrer is arranged obliquely, the included angle between the central axis of the stirrer and the horizontal plane is 15°, and the large-mouth straight section is located at the high end side.

[0022] In a feasible solution, the stirrer is provided with three.

[0023] In a feasible solution, a high-pressure air source is further included.

[0024] The top end of the reaction kettle body is provided with a gas inlet, and the high-pressure air source is connected with the gas inlet through a connecting pipeline, for defoaming before the liquid packaging and for pressing out the liquid.

[0025] In a feasible solution, the discharge pipe is provided with a filter screen.

[0026] In a feasible solution, the materials of the stirrer, the connecting arm and the connecting sleeve ring are 304 stainless steel. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0028] Figure 1 It is a schematic diagram of the reaction kettle in the embodiments of the present application;

[0029] Figure 2 It is a top view schematic diagram of the stirring mechanism in the embodiments of the present application;

[0030] Figure 3 It is a schematic diagram of the Figure 2 It is a sectional view schematic diagram of A in the

[0031] Figure 4 It is a sectional view schematic diagram of the stirrer in the embodiments of the present application.

[0032] Reference numerals in the drawings:

[0033] 1, reaction kettle body; 11, feeding port; 12, discharge pipe; 13, gas inlet; 21, motor; 22, stirring shaft; 23, stirrer; 231, large-mouth straight section; 232, conical section; 233, small-mouth straight section; 24, connecting arm; 25, connecting sleeve ring; 26, set screw. DETAILED DESCRIPTION

[0034] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0036] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0037] The technical solution of the present invention will be described in detail below with reference to specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0038] As described in the background section of this application, a reaction vessel is generally equipped with a stirring mechanism to ensure that the material and liquid are mixed evenly.

[0039] The inventors of this application have discovered that the agitators of current mixing mechanisms are blade-shaped, which generate a large amount of foam during mixing. The foam can affect the performance of specific products and is not conducive to the subsequent packaging of the products.

[0040] To address the aforementioned problems, the inventors of this application have proposed a technical solution, the specific embodiments of which are as follows:

[0041] Figure 1 This is a schematic diagram of the reaction vessel in an embodiment of the present invention. Figure 2This is a top view schematic diagram of the stirring mechanism in an embodiment of the present invention. Figure 3 As described in the embodiments of the present invention Figure 2 A cross-sectional view along direction A in the diagram. Figure 4 This is a cross-sectional schematic diagram of the stirrer in an embodiment of the present invention.

[0042] like Figures 1 to 4 As shown, the reactor in this embodiment includes: reactor body 1 and stirring mechanism.

[0043] The reactor body 1 has a feed port 11 at the top and a discharge pipe 12 at the bottom, with a discharge control valve on the discharge pipe 12. Various raw materials are added into the reactor body 1 through the feed port 11. After the reaction is completed in the reactor body 1, the liquid flows out from the discharge pipe 12 to the packaging process for packaging the liquid (product).

[0044] The stirring mechanism includes: a motor 21, a stirring shaft 22, and a stirrer 23.

[0045] The motor 21 is located at the top of the reactor body 1, and the stirring shaft 22 is vertically installed inside the reactor body 1. The top end of the stirring shaft 22 extends out of the reactor body 1 and is connected to the output shaft of the motor 21. The motor 21 is used to drive the stirring shaft 22 to rotate.

[0046] The stirrer 23 is a through-tube shape. A connecting arm 24 is provided on the circumferential side wall of the stirrer 23. One end of the connecting arm 24 is fixed to the stirrer 23 by welding, and the other end of the connecting arm 24 is connected to the stirring shaft 22, so that the stirrer 23 is fixed on the circumferential side wall of the stirring shaft 22.

[0047] Multiple stirrers 23 are provided, and the multiple stirrers 23 are evenly arranged along the circumference of the stirring shaft 22.

[0048] In this embodiment, the output shaft of the motor drives the stirring shaft and the agitator to rotate, and the agitator stirs the material in the reactor body; and when the agitator rotates, the liquid enters the agitator from one end opening and flows out of the agitator from the other end opening. During the stirring process, the liquid in the reactor will not form foam.

[0049] It can be found from the above that the reaction kettle of the embodiment is provided with the reaction kettle body and the stirring mechanism, the reaction kettle body is provided with the feeding opening and the discharging pipe, the stirring mechanism comprises the motor, the stirring shaft and the stirrer, the motor is arranged on the reaction kettle body, the stirring shaft is arranged in the reaction kettle body and connected with the motor, the stirrer is tubular, the pipe wall of the stirrer is provided with the connecting arm, the stirrer is arranged on the stirring shaft through the connecting arm, and the plurality of stirrers are uniformly arranged along the circumferential direction of the stirring shaft. The reaction kettle of the embodiment, the motor drives the stirring shaft and the stirrer to rotate, and the stirrer realizes the stirring of the liquid in the reaction kettle body; and when the stirrer rotates, the liquid enters the stirrer from one end opening of the stirrer and then flows out of the stirrer from the other end opening of the stirrer. In the process of stirring the liquid (product), the disturbance of the stirrer to the liquid is small, and basically no foam (bubble) is formed, so that the defoaming effect is achieved in a physical way, the performance of the product is not affected, and the subsequent sub-packaging and filling of the product are facilitated.

[0050] Optionally, the stirrer 23 in the reaction kettle of the embodiment is conical as a whole and comprises the large-mouth straight section 231, the conical section 232 and the small-mouth straight section 233.

[0051] The large-mouth straight section 231 and the small-mouth straight section 233 are respectively located on the two sides of the conical section 232 and are connected through the conical section 232, and the connecting arm 24 is connected to the conical section 232 of the stirrer 23.

[0052] In the embodiment, when the stirring shaft and the stirrer rotate, the liquid enters the stirrer from the large-mouth straight section of the stirrer and then flows out of the stirrer from the small-mouth straight section of the stirrer, so that the impact and disturbance on the liquid during stirring are smaller, and the foam generated is less.

[0053] Further, the stirring mechanism of the reaction kettle in the embodiment further comprises the connecting sleeve ring 25.

[0054] One end of the connecting arm 24 is welded to the stirrer 23, and the other end of the connecting arm 24 is welded to the connecting sleeve ring 25, so that the plurality of stirrers 23 are uniformly arranged on the connecting sleeve ring 25.

[0055] The connecting sleeve ring 25 is then sleeved on the stirring shaft 22 and fixed, so that the fixation of the plurality of stirrers 23 on the stirring shaft 22 is completed, and the fixation of the stirrers 23 is more convenient.

[0056] Further, the stirring mechanism of the reaction kettle in the embodiment further comprises the set screw 26.

[0057] The connecting sleeve ring 25 is provided with the threaded hole 251 penetrating through.

[0058] The set screw 26 is a hexagonal flat end screw.

[0059] The connecting sleeve 25 is sleeved on the stirring shaft 22, the tightening screw 26 is engaged on the threaded hole 251 of the connecting sleeve 25, and the tightening screw 26 is abutted against the stirring shaft 22 when being screwed, so that the connecting sleeve 25 is fixed on the stirring shaft 22.

[0060] Further, as shown in Figure 2 and Figure 3 shown, the stirrer 23 in the reaction kettle in the embodiment is arranged obliquely, the included angle between the central axis of the stirrer 23 and the horizontal plane is about 15°, and the large-mouth straight section 231 of the stirrer 23 is high on the high end side, and the large-mouth straight section 231 is higher than the small-mouth straight section 233.

[0061] Optionally, the number of the stirrer 23 in the reaction kettle in the embodiment is three, and the three stirrers 23 are arranged at intervals of 120° along the circumferential direction of the stirring shaft 22.

[0062] Optionally, the reaction kettle in the embodiment further comprises: a high-pressure air source.

[0063] The top end of the reaction kettle body 1 is provided with a gas inlet 13, and the high-pressure air source (not shown in the figure) is connected and communicated with the gas inlet 13 of the reaction kettle body 1 through a connecting pipeline.

[0064] In the embodiment, before the reaction of the material liquid (product) is completed and the material liquid (product) is discharged and packaged, a control valve on the connecting pipeline is opened, high-pressure air is then introduced into the reaction kettle body from the top end, and the possible small amount of foam in the reaction kettle body is eliminated by the high-pressure air, so as to realize further defoaming before the material liquid (product) is packaged; then the material liquid (product) in the reaction kettle body is pressed out from the discharge pipe at the bottom of the reaction kettle body under the action of high pressure and flows out to the packaging process for packaging. Different from the pumping of the material body to the packaging process by the suction pump, the material body flows out without air by high-pressure pressing, so that new foam is avoided in the packaging process due to the drop from the reaction kettle to the packaging barrel, and the product quality is ensured.

[0065] Optionally, the cross section of the discharge pipe 12 of the reaction kettle body 1 in the embodiment is provided with a filter screen for filtering the flowing material liquid.

[0066] Optionally, the material of the stirrer 23, the connecting arm 24 and the connecting sleeve 25 in the reaction kettle in the embodiment is 304 stainless steel, so as to ensure that the material liquid is not polluted.

[0067] In the present application, unless otherwise clearly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium.

[0068] Also, a first feature being "on", "above", and "over" a second feature can mean that the first feature is directly on, above, and over the second feature or that there is an intervening feature between the first feature and the second feature. A first feature being "under", "below", and "underneath" a second feature can mean that the first feature is directly under, below, and underneath the second feature or that there is an intervening feature between the first feature and the second feature.

[0069] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in one or more embodiments or examples. In addition, the skilled person in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0070] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A reaction vessel, characterized in that, include: Reactor body and stirring mechanism; The reactor body is provided with a feeding port at the top and a discharge pipe at the bottom; The stirring mechanism includes: a motor, a stirring shaft, and a stirrer; The motor is mounted on the reactor body, and the stirring shaft is mounted inside the reactor body and connected to the motor. The motor is used to drive the stirring shaft to rotate. The stirrer is tubular, and the tube wall of the stirrer is provided with a connecting arm. The stirrer is mounted on the stirring shaft via the connecting arm. The agitator is provided in multiple ways, and the multiple agitators are evenly arranged along the circumference of the agitator shaft. When the agitator shaft rotates, the liquid enters from one end of the agitator and flows out from the other end.

2. The reaction vessel according to claim 1, characterized in that, The agitator includes: a large-mouth straight section, a conical section, and a small-mouth straight section; The large-mouth straight section and the small-mouth straight section are connected by the tapered section; When the stirring shaft rotates, the liquid enters from the large-mouth straight section and flows out from the small-mouth straight section.

3. The reaction vessel according to claim 2, characterized in that, The stirring mechanism further includes: a connecting collar; The connecting collar is sleeved on the stirring shaft, and the connecting arm is disposed on the connecting collar.

4. The reaction vessel according to claim 3, characterized in that, The stirring mechanism further includes: a set screw; The connecting collar is provided with a threaded hole; The set screw engages with the threaded hole to fix the connecting collar on the stirring shaft.

5. The reaction vessel according to claim 2, characterized in that, The stirrer is tilted, with its central axis forming a 15° angle with the horizontal plane, and the large straight section located on the high end side.

6. The reaction vessel according to claim 1, characterized in that, The mixer has three parts.

7. The reaction vessel according to claim 1, characterized in that, Also includes: High-pressure air source; The top of the reactor body is provided with an air inlet, and the high-pressure air source is connected to the air inlet through a connecting pipe for defoaming and discharging the liquid before packaging.

8. The reaction vessel according to claim 1, characterized in that, The discharge pipe is equipped with a filter screen.

9. The reaction vessel according to claim 3, characterized in that, The stirrer, the connecting arm, and the connecting collar are made of 304 stainless steel.

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