Stirring paddle for chemical reaction

Abstract

The utility model provides a stirring paddle for chemical reaction, which comprises a connecting pipe, a plurality of groups of pipe bundles are arranged outside the circumference of the connecting pipe in an array manner, each pipe bundle comprises a plurality of guide pipes parallel to the connecting pipe, the front ends of the pipe bundles are communicated with the connecting pipe through front connecting boxes, and rear connecting boxes communicated with the rear ends of the pipe bundles are arranged outside the rear ends of the connecting pipe; the outer portion of the rear end of the connecting pipe is coaxially sleeved with a sleeve, a flow guide cavity of an annular structure is formed between the inner wall of the sleeve and the outer wall of the connecting pipe, the sleeve is connected with the rear connecting box, the flow guide cavity is communicated with the rear connecting box, a connector communicated with the flow guide cavity is arranged on the side wall of the sleeve, and a sealing structure is arranged between the tail end of the flow guide cavity and the outer wall of the connecting pipe. The rear end of the connecting pipe and the connector are used for being connected with a cooling liquid circulating system. The rear end of the sleeve or the connecting pipe is connected with a driving device; and a spoiler is arranged on the outer wall of the connecting pipe. According to the scheme, the contact area is large, heat in the middle of the reaction container can be rapidly taken away, and the heat dissipation efficiency is high.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical reaction equipment, in particular to a stirring paddle used for chemical reaction. Background Art

[0002] In a chemical reaction, in order to make the substances involved in the reaction mix more quickly and evenly, a stirring mechanism is usually set in the reactor to stir the reactants. However, a large amount of heat is generated in most reaction processes. In order to avoid excessive temperature affecting the reaction effect and causing production accidents, a heat pipe is usually set inside the reactor, and a coolant is injected into the heat pipe to take away the excess heat. Since a stirring mechanism is set inside the reactor, the heat pipe can only be set on the side wall of the reactor, so that the heat pipe cannot take away the heat in the middle of the reactor. Although the existing stirring structure also has a channel set inside the stirring shaft for circulating cooling liquid to achieve the purpose of heat dissipation in the middle of the reactor, the contact area between the stirring shaft and the reactants is small, and the heat that can be taken away is limited, and the temperature inside the reactor cannot be effectively reduced. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a stirring paddle for chemical reactions, which has a large contact area, can quickly take away the heat in the middle of the reaction container, and has a high heat dissipation efficiency.

[0004] In order to achieve the purpose of this utility model, the following scheme is proposed:

[0005] A stirring impeller for chemical reactions comprises: a connecting pipe, a plurality of tube bundles are arranged in a circumferential outer array, each of the tube bundles comprises a plurality of conduits parallel to the connecting pipe, the front end of the tube bundle is communicated with the connecting pipe through a front connecting box, the rear end of the connecting pipe is externally provided with a rear connecting box communicated with the rear end of the tube bundle, a sleeve is coaxially sleeved externally at the rear end of the connecting pipe, a flow guide cavity of an annular structure is provided between the inner wall of the sleeve and the outer wall of the connecting pipe, the sleeve is connected to the rear connecting box, and the flow guide cavity is communicated with the rear connecting box, a joint communicated with the flow guide cavity is provided on the side wall of the sleeve, a sealing structure is provided between the end of the flow guide cavity and the outer wall of the connecting pipe, the rear end of the connecting pipe and the joint are used to connect to a circulation system of a coolant; the rear end of the sleeve or the connecting pipe is used to connect to a driving device; and a spoiler is provided on the outer wall of the connecting pipe.

[0006] The beneficial effect of the utility model is that the connecting tubes and the multiple tube bundles are in contact with the reaction substances, so that a larger contact area can be provided, and the heat in the middle of the reaction container can be quickly taken away, thereby having a higher heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] The drawings described herein are for illustrative purposes only of selected embodiments and not all possible implementations, and are not intended to limit the scope of the present invention.

[0008] Figure 1 A schematic diagram of the overall structure of a preferred embodiment of the present application is shown.

[0009] Figure 2 A side view of a preferred embodiment of the present application is shown.

[0010] Figure 3 Shown along Figure 2 Cross-sectional view along the AA direction.

[0011] Figure 4 A partial cross-sectional view of a preferred embodiment of the present application is shown.

[0012] Markings in the figure: connecting pipe-1, front connecting box-11, rear connecting box-12, spoiler-13, tube bundle-2, positioning plate-21, sleeve-3, guide cavity-31, joint-32. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings, but the embodiments described in the utility model are only part of the embodiments of the utility model, rather than all the embodiments.

[0014] like Figures 1 to 4As shown, a stirring impeller for chemical reaction is characterized in that it includes: a connecting pipe 1, a plurality of tube bundles 2 are arranged in a circumferential outer array, the tube bundles 2 include a plurality of conduits parallel to the connecting pipe 1, the front ends of the tube bundles 2 are connected with the interior of the connecting pipe 1 through a front connecting box 11, the outside of the rear end of the connecting pipe 1 is provided with a rear connecting box 12 connected with the rear end of the tube bundle 2, a sleeve 3 is coaxially sleeved on the outside of the rear end of the connecting pipe 1, a guide cavity 31 of an annular structure is provided between the inner wall of the sleeve 3 and the outer wall of the connecting pipe 1, the sleeve 3 is connected to the rear connecting box 12, and the guide cavity 31 is connected to the rear connecting box 12, a sealing structure is provided between the end of the guide cavity 31 and the outer wall of the connecting pipe 1, and the rear end of the connecting pipe 1 and the guide cavity 31 are used to connect to a circulation system of a coolant. Specifically, a plurality of through holes are provided on the side wall of the sleeve 3, and the sleeve 3 is passed through a joint 32, the two ends of the joint 32 cover the through holes on the sleeve 3, and a sealing structure is provided between the inner walls of the two ends of the joint and the inner wall of the sleeve 3, and the side wall of the joint 32 is provided with an interface for replacing the guide cavity 31 to connect with the circulation system, so that the sleeve 3 can be rotated around, and the interface position of the joint 32 can be kept fixed, so as to facilitate the setting of the pipeline connected with the circulation system. More specifically, the rear end of the connecting pipe 1 can be used as a liquid inlet to connect it to the outlet end of the coolant circulation system, and the liquid outlet of the joint 32 can be used to connect it to the inlet end of the coolant circulation system; the rear end of the connecting pipe 1 can also be used as a liquid outlet, and the joint 32 can be used as a liquid inlet; the rear end of the sleeve 3 or the connecting pipe 1 is used to connect the driving device to drive the stirring paddle to rotate; the outer wall of the connecting pipe 1 is provided with a spoiler 13 to improve the stirring efficiency and stirring effect.

[0015] In the specific implementation process, the stirring paddle is fixedly installed or movably arranged in the reaction container, and the driving device is used to drive the stirring paddle to rotate. The driving device is a motor, and the driving device drives the stirring paddle to rotate by gear transmission, belt transmission or chain transmission. The driven wheel used for transmission can be sleeved on the outside of the connecting pipe 1 or the sleeve 3. The coolant provided by the coolant circulation system flows in the connecting pipe 1, the front connecting box 11, the tube bundle 2, the rear connecting box 12 and the guide cavity 31, and takes away the heat in the reaction container by heat conduction. Because the stirring paddle is arranged in the middle of the reaction container, the temperature in the middle of the reaction container can be effectively reduced by this method; and the stirring paddle is in a non-stop rotating state, thereby increasing the probability of the tube bundle 2 contacting with the reaction substances at various locations, and making the heat dissipation at various locations in the reaction container more balanced.

[0016] Preferably, Figure 3 As shown, the tubes of each tube bundle 2 are arranged at intervals to increase the contact area with the reaction material, improve the heat conduction efficiency, and thus improve the heat dissipation efficiency.

[0017] Preferably, Figure 1 , Figure 2As shown, a positioning plate 21 is provided on the outer wall of the connecting pipe 1 corresponding to the middle section of each tube bundle 2, and the conduits of the tube bundle 2 all pass through the corresponding positioning plates 21 to improve the structural stability of the conduits.

[0018] Preferably, there is a gap between the tube bundle 2 and the connecting tube 1 to increase the contact area with the reaction material and improve the heat dissipation efficiency.

[0019] Preferably, Figure 3 As shown, the conduits of the tube bundle 2 are arranged in a fan shape, so that the cross-sectional profile of the stirring blade is a circular structure, and more conduits can be arranged in the circular structure in a fan shape to improve the heat dissipation efficiency.

[0020] Preferably, Figure 3 As shown, there are gaps between adjacent front connection boxes 11 and adjacent rear connection boxes 12 to facilitate the circulation of reaction materials.

[0021] Preferably, Figure 1 , Figure 2 As shown, at least one row of spoilers 13 is provided between the adjacent tube bundles 2 on the outer wall of the connecting tube 1, and the arrangement direction of the spoilers 13 is parallel to the connecting tube 1, which can not only increase the stirring effect on the reaction material, but also make the overall structure of the stirring paddle more compact, which is suitable for reaction vessels with smaller inner diameters.

[0022] Further preferably, Figure 2 As shown, the spoiler 13 is inclined relative to the axis of the connecting pipe to increase the turbulence effect during stirring and make the reaction substances mixed more evenly.

[0023] The above is only a preferred embodiment of the utility model, and does not mean that it is the only one or limit the utility model. Those skilled in the art should understand that various changes or equivalent replacements made to the utility model without departing from the scope of the utility model are within the scope of protection of the utility model.

Claims

1. A stirring paddle for chemical reaction, characterized in that: include: A connecting pipe (1) is provided with a plurality of tube bundles (2) in an array on the circumference of the outer portion thereof. The tube bundles (2) each include a plurality of conduits parallel to the connecting pipe (1). The front ends of the tube bundles (2) are connected to the connecting pipe (1) via a front connection box (11). The rear end of the connecting pipe (1) is provided with a rear connection box (12) on the outside of the rear end thereof and connected to the rear end of the tube bundle (2). A sleeve (3) is provided on the outer coaxial sleeve of the rear end of the connecting pipe (1). A guide cavity (31) of an annular structure is provided between the inner wall of the sleeve (3) and the outer wall of the connecting pipe (1). The sleeve (3) is connected to the rear connection box (12), and the guide cavity (31) is connected to the rear connection box (12). A sealing structure is provided between the end of the guide cavity (31) and the outer wall of the connecting pipe (1). The rear end of the connecting pipe (1) and the guide cavity (31) are used to connect to a circulation system of a cooling liquid. The sleeve (3) or the rear end of the connecting pipe (1) is used to connect to a driving device. A spoiler (13) is provided on the outer wall of the connecting pipe (1).

2. A stirring paddle for chemical reaction according to claim 1, characterized in that: The tubes of each tube bundle (2) are arranged at intervals.

3. A stirring paddle for chemical reaction according to claim 2, characterized in that: A positioning plate (21) is provided on the outer wall of the connecting pipe (1) corresponding to the middle section of each group of tube bundles (2), and the conduits of the tube bundles (2) all pass through the corresponding positioning plates (21).

4. A stirring paddle for chemical reaction according to claim 1 or 2, characterized in that: There is a gap between the tube bundle (2) and the connecting tube (1).

5. A stirring paddle for chemical reaction according to claim 1 or 2, characterized in that: The ducts of the tube bundle (2) are arranged in a fan shape.

6. A stirring paddle for chemical reaction according to claim 5, characterized in that: There is a gap between adjacent front connection boxes (11) and adjacent rear connection boxes (12).

7. A stirring paddle for chemical reaction according to claim 1, characterized in that: At least one row of spoilers (13) is provided between adjacent tube bundles (2) on the outer wall of the connecting tube (1).

8. A stirring blade for chemical reaction according to claim 7, characterized in that: The spoiler (13) is in an inclined state relative to the axis of the connecting pipe.

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