A stirring blade, agitator and reactor

Abstract

The present invention discloses a stirring blade, a stirrer and a reactor, belonging to the technical field of reaction equipment, comprising two cover plates, a plurality of flow channel mechanisms are fixedly arranged between the two cover plates, the flow channel mechanisms comprising a first flow channel plate and a second flow channel plate; a first flow channel, a second flow channel, a third flow channel and a fourth flow channel are arranged on the first flow channel plate; a fifth flow channel, a sixth flow channel and a seventh flow channel are arranged on the second flow channel plate; the first flow channel is connected to the fifth flow channel, the fifth flow channel is connected to the third flow channel, the third flow channel is connected to the seventh flow channel, the seventh flow channel is connected to the fourth flow channel, the fourth flow channel is connected to the sixth flow channel, and the sixth flow channel is connected to the second flow channel. The arrangement and connection relationship of each flow channel on the first flow channel plate and the second flow channel plate in the present invention enable the heat exchange medium to flow through multiple bends in the stirring blade, the flow path is lengthened, the circulation time of the heat exchange medium in the stirring blade is increased, and the heat exchange effect of the stirring blade is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of reaction equipment, and in particular relates to a stirring blade, a stirrer and a reactor. Background Art

[0002] In the chemical production process, there are many exothermic reactions. If the heat released by these reactions cannot be handled in time, it will cause the local temperature inside the reactor to rise, resulting in the production of by-products and even the risk of loss of control. At present, in order to solve the problem of heat accumulation in the reactor, the commonly used measure is to set an agitator in the reactor and use the stirring blades of the agitator to stir the reaction materials to dissipate heat. In order to increase the heat dissipation effect, a heat exchange channel is opened on the agitator blades, and a heat exchange medium is input into the heat exchange channel. The heat generated by the reaction is taken away by heat exchange between the heat exchange medium and the reaction materials.

[0003] However, the arrangement of the heat exchange channel in the existing stirring blades makes the flow path and flow time of the heat exchange medium in the stirring blades short, resulting in poor heat exchange effect. Summary of the invention

[0004] In order to solve the problem that the heat exchange medium has a short flow path and a short flow time in the existing stirring blades, the present invention provides a stirring blade.

[0005] A stirring blade comprises two cover plates arranged in parallel, a plurality of flow channel mechanisms are fixedly arranged between the two cover plates, and the flow channel mechanisms comprise a first flow channel plate and a second flow channel plate fixedly arranged in parallel;

[0006] A first flow channel and a second flow channel are respectively arranged on both sides of the lower end of the first flow channel plate, the first flow channel and the second flow channel are connected to the lower end surface of the first flow channel plate, a third flow channel is arranged on the first flow channel plate at the upper end of the first flow channel, and a fourth flow channel is arranged on the first flow channel plate at the upper end of the second flow channel;

[0007] A fifth flow channel and a sixth flow channel are respectively arranged on both sides of the second flow channel plate, and a seventh flow channel is arranged on the second flow channel plate at the upper ends of the fifth flow channel and the sixth flow channel;

[0008] The first flow channel is connected to the fifth flow channel on the adjacent second flow channel plate, the fifth flow channel is connected to the third flow channel on the adjacent first flow channel plate, the third flow channel is connected to the seventh flow channel on the adjacent second flow channel plate, the seventh flow channel is connected to the fourth flow channel on the adjacent first flow channel plate, the fourth flow channel is connected to the sixth flow channel on the adjacent second flow channel plate, and the sixth flow channel is connected to the second flow channel on the adjacent first flow channel plate.

[0009] Preferably, an eighth flow channel and a ninth flow channel are respectively arranged on both sides of the lower end of the second flow channel plate, and the eighth flow channel and the ninth flow channel are connected to the lower end surface of the second flow channel plate;

[0010] The first flow channel is connected to the eighth flow channel on the adjacent second flow channel plate, and the second flow channel is connected to the ninth flow channel on the adjacent second flow channel plate;

[0011] The first flow channel and the eighth flow channel that are connected form a first interface of the heat exchange tube, and the second flow channel and the ninth flow channel that are connected form a second interface of the heat exchange tube.

[0012] Preferably, a tenth flow channel is arranged between the first flow channel and the second flow channel in the first flow channel plate, and an eleventh flow channel and a twelfth flow channel are arranged between the third flow channel and the fourth flow channel in the first flow channel plate;

[0013] The thirteenth and fourteenth flow channels are arranged between the fifth and sixth flow channels in the second flow channel plate, and the seventh flow channel includes the fifteenth and sixteenth flow channels separated therefrom;

[0014] The third flow channel is connected with the fifteenth flow channel on the adjacent second flow channel plate, the fifteenth flow channel is connected with the eleventh flow channel on the adjacent first flow channel plate, the eleventh flow channel is connected with the thirteenth flow channel on the adjacent second flow channel plate, the thirteenth flow channel is connected with the tenth flow channel on the adjacent first flow channel plate, the tenth flow channel is connected with the fourteenth flow channel on the adjacent second flow channel plate, the fourteenth flow channel is connected with the twelfth flow channel on the adjacent first flow channel plate, the twelfth flow channel is connected with the sixteenth flow channel on the adjacent second flow channel plate, and the sixteenth flow channel is connected with the fourth flow channel on the adjacent first flow channel plate.

[0015] Preferably, the tenth flow channel comprises a transverse flow channel, and both ends of the transverse flow channel are connected to vertical flow channels extending upward;

[0016] In each first flow channel plate, the first flow channel and the third flow channel are vertically aligned, the second flow channel and the fourth flow channel are vertically aligned, and the two vertical flow channels in the tenth flow channel are vertically aligned with the eleventh flow channel and the twelfth flow channel respectively;

[0017] In each second flow channel plate, the fifth flow channel and the eighth flow channel are aligned vertically, and the sixth flow channel and the ninth flow channel are aligned vertically.

[0018] Preferably, the first flow channel and the second flow channel are parallel and arranged at the same height, and the third flow channel, the eleventh flow channel, the twelfth flow channel, and the fourth flow channel are parallel and arranged at the same height;

[0019] The fifth flow channel and the sixth flow channel are arranged in parallel and at the same height, the eighth flow channel and the ninth flow channel are arranged in parallel and at the same height, and the thirteenth flow channel and the fourteenth flow channel are arranged in parallel and at the same height.

[0020] Preferably, the height between the top edge of the first flow channel and the second flow channel and the bottom edge of the first flow channel plate is a, the height between the bottom edge of the third flow channel, the eleventh flow channel, the twelfth flow channel and the fourth flow channel and the bottom edge of the first flow channel plate is b, and the height between the top edge of the third flow channel, the eleventh flow channel, the twelfth flow channel and the fourth flow channel and the bottom edge of the first flow channel plate is c;

[0021] The height of the top edge of the eighth flow channel and the ninth flow channel from the bottom edge of the second flow channel plate is d, the height of the bottom edge of the fifth flow channel and the sixth flow channel from the bottom edge of the second flow channel plate is e, the height of the top edge of the fifth flow channel and the sixth flow channel from the bottom edge of the second flow channel plate is f, the height of the bottom edge of the thirteenth flow channel and the fourteenth flow channel from the bottom edge of the second flow channel plate is g, the height of the top edge of the thirteenth flow channel and the fourteenth flow channel from the bottom edge of the second flow channel plate is h, the height of the bottom edge of the fifteenth flow channel and the sixteenth flow channel from the bottom edge of the second flow channel plate is i, and the height of the top edge of the fifteenth flow channel and the sixteenth flow channel from the bottom edge of the second flow channel plate is j;

[0022] The bottom edge of the first flow channel plate and the bottom edge of the second flow channel plate are of the same height;

[0023] Then j≥c>i>h>f>b>a>g>e>d.

[0024] Preferably, the height between the farthest top edge of the tenth flow channel and the bottom edge of the first flow channel plate is k, k=a; the height between the bottom edge of the tenth flow channel and the bottom edge of the first flow channel plate is m, m=g.

[0025] Preferably, the first flow channel, the second flow channel, the third flow channel, the eleventh flow channel, the twelfth flow channel, the fourth flow channel, the fifth flow channel, the sixth flow channel, the eighth flow channel, the ninth flow channel, the thirteenth flow channel, and the fourteenth flow channel are all strip groove structures extending in the up-down direction;

[0026] The fifteenth flow channel and the sixteenth flow channel are both strip groove structures extending in the left-right direction.

[0027] The invention also provides a stirrer.

[0028] A stirrer comprises a stirring shaft, wherein the stirring shaft is provided with stirring blades;

[0029] A stirring shaft hole extending in the axial direction is provided in the middle of the stirring shaft, and the stirring shaft hole is divided into a first heat exchange medium flow chamber and a second heat exchange medium flow chamber by a partition plate;

[0030] The first interface is in sealed communication with the first heat exchange medium circulation cavity, and the second interface is in sealed communication with the second heat exchange medium circulation cavity.

[0031] The invention also provides a reactor.

[0032] A reactor includes a stirrer.

[0033] The beneficial effects of the present invention are:

[0034] (1) The arrangement and connection relationship of the various flow channels on the first flow channel plate and the second flow channel plate in the present invention enable the heat exchange medium to flow through multiple bends between the first flow channel plate and the second flow channel plate in the stirring blade, thereby lengthening the flow path, increasing the circulation time of the heat exchange medium in the stirring blade, and improving the heat exchange effect of the stirring blade.

[0035] (2) The stirring blade of the present invention adopts a plate stacking structure, and the single-layer plate is easy to process and manufacture.

[0036] (3) Compared with the traditional heat exchange method using heat exchange tubes, the stirring system using the stirring blades of the present invention can avoid the situation where the stirring effect is affected by the need to arrange heat exchange tubes, while the stirring blades can take into account the functions of heat exchange and stirring. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0038] Figure 1 It is a schematic diagram of the structure of the stirring blade of the present invention;

[0039] Figure 2 is a schematic structural diagram of the first flow channel plate in Example 1 of the present invention;

[0040] Figure 3 is a schematic structural diagram of the second flow channel plate in Example 1 of the present invention;

[0041] Figure 4 is a schematic diagram of the flow path of the heat exchange medium in the stirring blade of Example 1 of the present invention;

[0042] Figure 5 is a schematic structural diagram of the first flow channel plate in Example 2 of the present invention;

[0043] Figure 6 is a schematic structural diagram of the second flow channel plate in Example 2 of the present invention;

[0044] Figure 7 Schematic diagram of the positional relationship between the channels in the first channel plate and the second channel plate in Example 2 of the present invention Figure 1 ;

[0045] Figure 8 Schematic diagram of the positional relationship between the channels in the first channel plate and the second channel plate in Example 2 of the present invention Figure 2 ;

[0046] Fig. 9 is a schematic diagram of the flow path of the heat exchange medium in the stirring blade of Example 2 of the present invention;

[0047] Fig.10 It is a schematic structural diagram when the corresponding end surface of the first flow channel plate in the present invention is an inclined surface;

[0048] Fig.11 is a schematic structural diagram when the corresponding end surface of the second flow channel plate in the present invention is an inclined surface;

[0049] Fig.12 It is a structural schematic diagram when the corresponding end surface of the first flow channel plate in the present invention is a curved surface;

[0050] Fig.13 is a schematic structural diagram when the corresponding end surface of the second flow channel plate in the present invention is a curved surface;

[0051] Fig.14 It is a schematic diagram of the coordination between the stirring blade and the stirring shaft of the present invention;

[0052] in:

[0053] 1-cover plate, 11-first interface, 12-second interface;

[0054] 2-first flow channel plate, 21-first flow channel, 22-second flow channel, 23-third flow channel, 24-fourth flow channel, 25-tenth flow channel, 251-transverse flow channel, 252-vertical flow channel, 26-eleventh flow channel, 27-twelfth flow channel;

[0055] 3-second flow channel plate, 31-fifth flow channel, 32-sixth flow channel, 33-seventh flow channel, 331-fifteenth flow channel, 332-sixteenth flow channel, 34-eighth flow channel, 35-ninth flow channel, 36-thirteenth flow channel, 37-fourteenth flow channel;

[0056] 4- stirring shaft, 41- partition plate, 42- protrusion, 5- mounting groove, 6- first heat exchange medium circulation cavity, 7- second heat exchange medium circulation cavity. DETAILED DESCRIPTION

[0057] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0058] Embodiment 1:

[0059] like Figure 1As shown, a stirring blade comprises two cover plates 1 arranged in parallel, and a plurality of flow channel mechanisms are fixedly arranged between the two cover plates 1, and the flow channel mechanisms comprise a first flow channel plate 2 and a second flow channel plate 3 fixedly arranged in parallel; in the present application, the first flow channel plate 2, the second flow channel plate 3 and the cover plate 1, as well as the first flow channel plate 2 and the second flow channel plate 3 are welded to each other, and the overall temperature and pressure resistance is high; the stirring blade of the present application adopts a plate stacking structure, and the single-layer plate is easy to process and manufacture;

[0060] like Figure 2 As shown, a first flow channel 21 and a second flow channel 22 are respectively provided on both sides of the lower end of the first flow channel plate 2, the first flow channel 21 and the second flow channel 22 are connected to the lower end surface of the first flow channel plate 2, a third flow channel 23 is provided on the first flow channel plate 2 at the upper end of the first flow channel 21, and a fourth flow channel 24 is provided on the first flow channel plate 2 at the upper end of the second flow channel 22;

[0061] like Figure 3 As shown, a fifth flow channel 31 and a sixth flow channel 32 are respectively arranged on both sides of the second flow channel plate 3, and a seventh flow channel 33 is arranged on the second flow channel plate 3 at the upper ends of the fifth flow channel 31 and the sixth flow channel 32;

[0062] The first flow channel 21 is connected with the fifth flow channel 31 on the adjacent second flow channel plate 3, the fifth flow channel 31 is connected with the third flow channel 23 on the adjacent first flow channel plate 2, the third flow channel 23 is connected with the seventh flow channel 33 on the adjacent second flow channel plate 3, the seventh flow channel 33 is connected with the fourth flow channel 24 on the adjacent first flow channel plate 2, the fourth flow channel 24 is connected with the sixth flow channel 32 on the adjacent second flow channel plate 3, and the sixth flow channel 32 is connected with the second flow channel 22 on the adjacent first flow channel plate 2.

[0063] Preferably, an eighth flow channel 34 and a ninth flow channel 35 are respectively disposed on both sides of the lower end of the second flow channel plate 3, and the eighth flow channel 34 and the ninth flow channel 35 are connected to the lower end surface of the second flow channel plate 3;

[0064] The first flow channel 21 is connected to the eighth flow channel 34 on the adjacent second flow channel plate 3, and the second flow channel 22 is connected to the ninth flow channel 35 on the adjacent second flow channel plate 3;

[0065] The first flow channel 21 and the eighth flow channel 34 that are in communication form a first interface 11 of the heat exchange tube, and the second flow channel 22 and the ninth flow channel 35 that are in communication form a second interface 12 of the heat exchange tube.

[0066] In the present application, the first flow channels 21 in all flow channel mechanisms are connected through the eighth flow channel 34, so that the connected first flow channels 21 and the eighth flow channels 34 form the inlet or outlet of the heat exchange medium; the second flow channels 22 in all flow channel mechanisms are connected through the ninth flow channel 35, so that the connected second flow channels 22 and the ninth flow channels 35 form the outlet or inlet of the heat exchange medium.

[0067] Taking a set of flow channel mechanisms fixedly arranged between two cover plates 1 as an example, the flow path of the heat exchange medium in the stirring blades of Example 1 is explained. Figure 4 As shown, the connected first flow channel 21 and the eighth flow channel 34 serve as the inlet of the heat exchange medium, and the connected second flow channel 22 and the ninth flow channel 35 serve as the outlet of the heat exchange medium: the heat exchange medium enters the first flow channel 21 from the inlet, then enters the fifth flow channel 31, then enters the third flow channel 23, then enters the seventh flow channel 33, then enters the fourth flow channel 24, then enters the sixth flow channel 32, then enters the second flow channel 22, and finally flows out through the connected second flow channel 22 and the ninth flow channel 35. It can be seen that the heat exchange medium flows through multiple bends between the first flow channel plate 2 and the second flow channel plate 3 in the stirring blade, and the flow path is lengthened, which increases the circulation time of the heat exchange medium in the stirring blade and improves the heat exchange effect of the stirring blade. When more than one set of flow channel mechanisms are set between the two cover plates 1, the flow path of the heat exchange medium in the stirring blade is lengthened compared with one set of flow channel mechanisms.

[0068] Embodiment 2:

[0069] On the basis of Example 1, Figure 5 As shown, a tenth flow channel 25 is disposed between the first flow channel 21 and the second flow channel 22 in the first flow channel plate 2, and an eleventh flow channel 26 and a twelfth flow channel 27 are disposed between the third flow channel 23 and the fourth flow channel 24 in the first flow channel plate 2;

[0070] like Figure 6 As shown, the thirteenth flow channel 36 and the fourteenth flow channel 37 are arranged between the fifth flow channel 31 and the sixth flow channel 32 in the second flow channel plate 3, and the seventh flow channel 33 includes the fifteenth flow channel 331 and the sixteenth flow channel 332 separated from each other;

[0071] The third flow channel 23 is connected with the fifteenth flow channel 331 on the adjacent second flow channel plate 3, the fifteenth flow channel 331 is connected with the eleventh flow channel 26 on the adjacent first flow channel plate 2, the eleventh flow channel 26 is connected with the thirteenth flow channel 36 on the adjacent second flow channel plate 3, the thirteenth flow channel 36 is connected with the tenth flow channel 25 on the adjacent first flow channel plate 2, the tenth flow channel 25 is connected with the fourteenth flow channel 37 on the adjacent second flow channel plate 3, the fourteenth flow channel 37 is connected with the twelfth flow channel 27 on the adjacent first flow channel plate 2, the twelfth flow channel 27 is connected with the sixteenth flow channel 332 on the adjacent second flow channel plate 3, and the sixteenth flow channel 332 is connected with the fourth flow channel 24 on the adjacent first flow channel plate 2.

[0072] Preferably, the tenth flow channel 25 comprises a transverse flow channel 251, and both ends of the transverse flow channel 251 are connected to vertical flow channels 252 extending upward;

[0073] In each first flow channel plate 2, the first flow channel 21 and the third flow channel 23 are aligned vertically, the second flow channel 22 and the fourth flow channel 24 are aligned vertically, and the two vertical flow channels 252 in the tenth flow channel 25 are aligned vertically with the eleventh flow channel 26 and the twelfth flow channel 27 respectively;

[0074] In each second flow channel plate 3 , the fifth flow channel 31 and the eighth flow channel 34 are aligned vertically, and the sixth flow channel 32 and the ninth flow channel 35 are aligned vertically.

[0075] Preferably, the first flow channel 21 and the second flow channel 22 are parallel and arranged at the same height, and the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, and the fourth flow channel 24 are parallel and arranged at the same height;

[0076] The fifth flow channel 31 and the sixth flow channel 32 are arranged in parallel and at the same height, the eighth flow channel 34 and the ninth flow channel 35 are arranged in parallel and at the same height, and the thirteenth flow channel 36 and the fourteenth flow channel 37 are arranged in parallel and at the same height.

[0077] Preferably, Figure 7 As shown, the height of the top edge of the first flow channel 21 and the second flow channel 22 from the bottom edge of the first flow channel plate 2 is a, the height of the bottom edge of the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, and the fourth flow channel 24 from the bottom edge of the first flow channel plate 2 is b, and the height of the top edge of the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, and the fourth flow channel 24 from the bottom edge of the first flow channel plate 2 is c;

[0078] The height of the top edge of the eighth flow channel 34 and the ninth flow channel 35 from the bottom edge of the second flow channel plate 3 is d, the height of the bottom edge of the fifth flow channel 31 and the sixth flow channel 32 from the bottom edge of the second flow channel plate 3 is e, the height of the top edge of the fifth flow channel 31 and the sixth flow channel 32 from the bottom edge of the second flow channel plate 3 is f, the height of the bottom edge of the thirteenth flow channel 36 and the fourteenth flow channel 37 from the bottom edge of the second flow channel plate 3 is g, the height of the top edge of the thirteenth flow channel 36 and the fourteenth flow channel 37 from the bottom edge of the second flow channel plate 3 is h, the height of the bottom edge of the fifteenth flow channel 331 and the sixteenth flow channel 332 from the bottom edge of the second flow channel plate 3 is i, and the height of the top edge of the fifteenth flow channel 331 and the sixteenth flow channel 332 from the bottom edge of the second flow channel plate 3 is j;

[0079] The bottom edge of the first flow channel plate 2 and the bottom edge of the second flow channel plate 3 are of the same height;

[0080] Then j≥c>i>h>f>b>a>g>e>d.

[0081] Preferably, Figure 8 As shown, the height between the farthest top edge of the tenth flow channel 25 and the bottom edge of the first flow channel plate 2 is k, k=a; the height between the bottom edge of the tenth flow channel 25 and the bottom edge of the first flow channel plate 2 is m, m=g.

[0082] Preferably, the first flow channel 21, the second flow channel 22, the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, the fourth flow channel 24, the fifth flow channel 31, the sixth flow channel 32, the eighth flow channel 34, the ninth flow channel 35, the thirteenth flow channel 36, and the fourteenth flow channel 37 are all strip groove structures extending in the up-down direction;

[0083] The fifteenth flow channel 331 and the sixteenth flow channel 332 are both strip-shaped groove structures extending in the left-right direction.

[0084] Specifically, in the present application, the upper and lower ends of the first flow channel 21, the second flow channel 22, the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, the fourth flow channel 24, the fifth flow channel 31, the sixth flow channel 32, the eighth flow channel 34, the ninth flow channel 35, the thirteenth flow channel 36, and the fourteenth flow channel 37 and the upper end surfaces of the two vertical flow channels 252 are planar structures, and the left and right ends of the fifteenth flow channel 331 and the sixteenth flow channel 332 are planar structures, such as Figure 5 , Figure 6 As shown; or the upper end surfaces of the first flow channel 21, the second flow channel 22 and the lower end surfaces of the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, the fourth flow channel 24 and the upper and lower end surfaces of the fifth flow channel 31, the sixth flow channel 32, the thirteenth flow channel 36, the fourteenth flow channel 37 and the eighth flow channel 34, the ninth flow channel 35, and the upper end surfaces of the two vertical flow channels 252 are all parallel inclined structures, such as Fig.10 , Fig.11 As shown; or the upper end surfaces of the first flow channel 21, the second flow channel 22 and the upper and lower end surfaces of the third flow channel 23, the eleventh flow channel 26, the twelfth flow channel 27, the fourth flow channel 24, the fifth flow channel 31, the sixth flow channel 32, the thirteenth flow channel 36, and the fourteenth flow channel 37 and the eighth flow channel 34, the ninth flow channel 35, and the upper end surfaces of the two vertical flow channels 252 are all cambered structures, and the left and right ends of the fifteenth flow channel 331 and the sixteenth flow channel 332 are cambered structures, such as Fig.12 , Fig.13 shown.

[0085] Taking a set of flow channel mechanisms fixedly arranged between two cover plates 1 as an example, the flow path of the heat exchange medium in the stirring blades of Example 2 is described. Fig. 9 As shown, the connected first flow channel 21 and the eighth flow channel 34 serve as the inlet of the heat exchange medium, and the connected second flow channel 22 and the ninth flow channel 35 serve as the outlet of the heat exchange medium: the heat exchange medium enters the first flow channel 21 from the inlet, then enters the fifth flow channel 31, then enters the third flow channel 23, then enters the fifteenth flow channel 331, then enters the eleventh flow channel 26, then enters the thirteenth flow channel 36, then enters the tenth flow channel 25, then enters the fourteenth flow channel 37, then enters the twelfth flow channel 27, then enters the sixteenth flow channel 332, then enters the fourth flow channel 24, then enters the sixth flow channel 32, then enters the second flow channel 22, and finally flows out through the connected second flow channel 22 and the ninth flow channel 35. It can be seen that the heat exchange medium makes multiple bends and flows between the first flow channel plate 2 and the second flow channel plate 3 in the stirring blade, and the flow path is lengthened, which increases the circulation time of the heat exchange medium in the stirring blade and improves the heat exchange effect of the stirring blade. When more than one set of flow channel mechanisms are arranged between the two cover plates 1 , the flow path of the heat exchange medium in the stirring blades is lengthened compared to one set of flow channel mechanisms.

[0086] Embodiment 3:

[0087] A stirrer, comprising a stirring shaft 4, on which the stirring blade in Example 1 or Example 2 is arranged, and a plurality of stirring blades can be arranged on the stirring shaft 4, specifically, a mounting groove 5 is arranged in the middle of the bottom edge of the stirring blade, and a protrusion 42 is arranged on the stirring shaft 4 for plugging and matching with the mounting groove 5, after the mounting groove 5 of the stirring blade is matched with the protrusion 42 on the stirring shaft 4, the stirring blade is welded and fixed to the stirring shaft 4, and the height of the top edge of the mounting groove 5 is consistent with the height of the top edge of the eighth flow channel 34;

[0088] like Fig.14 As shown, a stirring shaft hole extending in the axial direction is provided in the middle of the stirring shaft 4, and the stirring shaft hole is divided into a first heat exchange medium flow chamber 6 and a second heat exchange medium flow chamber 7 by a partition plate 41;

[0089] The first interface 11 is in sealed communication with the first heat exchange medium circulation chamber 6 , and the second interface 12 is in sealed communication with the second heat exchange medium circulation chamber 7 .

[0090] Embodiment 4:

[0091] A reactor, comprising the agitator in Example 3.

[0092] In Example 4, when the reaction materials react in the reactor, the stirring blades on the agitator stir them. During the stirring process, the heat exchange medium is introduced through the first heat exchange medium circulation cavity 6. The heat exchange medium makes multiple bends and flows between the first flow channel plate 2 and the second flow channel plate 3 in the stirring blades. The flow path is lengthened, which increases the circulation time of the heat exchange medium in the stirring blades, improves the heat exchange effect of the stirring blades, and the heat exchange medium finally flows out of the reactor through the second heat exchange medium circulation cavity 7.

[0093] Parts not described in the present invention can be implemented by adopting or drawing on existing technologies.

[0094] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not a limitation of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the protection scope of the present invention.

Claims

1. A stirring blade, characterized in that: It comprises two cover plates (1) arranged in parallel, and a plurality of flow channel mechanisms are fixedly arranged between the two cover plates (1), wherein the flow channel mechanisms comprise a first flow channel plate (2) and a second flow channel plate (3) which are fixedly arranged in parallel; A first flow channel (21) and a second flow channel (22) are respectively arranged on both sides of the lower end of the first flow channel plate (2); the first flow channel (21) and the second flow channel (22) are connected to the lower end surface of the first flow channel plate (2); a third flow channel (23) is arranged on the first flow channel plate (2) above the first flow channel (21); and a fourth flow channel (24) is arranged on the first flow channel plate (2) above the second flow channel (22); A fifth flow channel (31) and a sixth flow channel (32) are respectively arranged on both sides of the second flow channel plate (3), and a seventh flow channel (33) is arranged on the second flow channel plate (3) at the upper ends of the fifth flow channel (31) and the sixth flow channel (32); The first flow channel (21) is connected to a fifth flow channel (31) on an adjacent second flow channel plate (3), the fifth flow channel (31) is connected to a third flow channel (23) on an adjacent first flow channel plate (2), the third flow channel (23) is connected to a seventh flow channel (33) on an adjacent second flow channel plate (3), the seventh flow channel (33) is connected to a fourth flow channel (24) on an adjacent first flow channel plate (2), the fourth flow channel (24) is connected to a sixth flow channel (32) on an adjacent second flow channel plate (3), and the sixth flow channel (32) is connected to a second flow channel (22) on an adjacent first flow channel plate (2); An eighth flow channel (34) and a ninth flow channel (35) are respectively arranged on both sides of the lower end of the second flow channel plate (3), and the eighth flow channel (34) and the ninth flow channel (35) are connected to the lower end surface of the second flow channel plate (3); The first flow channel (21) is connected to an eighth flow channel (34) on an adjacent second flow channel plate (3), and the second flow channel (22) is connected to a ninth flow channel (35) on an adjacent second flow channel plate (3); The first flow channel (21) and the eighth flow channel (34) are connected to form a first interface (11) of the heat exchange tube, and the second flow channel (22) and the ninth flow channel (35) are connected to form a second interface (12) of the heat exchange tube.

2. The stirring blade according to claim 1, characterized in that: A tenth flow channel (25) is provided at a position between the first flow channel (21) and the second flow channel (22) in the first flow channel plate (2); an eleventh flow channel (26) and a twelfth flow channel (27) are provided at a position between the third flow channel (23) and the fourth flow channel (24) in the first flow channel plate (2); A thirteenth flow channel (36) and a fourteenth flow channel (37) are arranged between the fifth flow channel (31) and the sixth flow channel (32) in the second flow channel plate (3), and the seventh flow channel (33) includes a fifteenth flow channel (331) and a sixteenth flow channel (332) separated therefrom; The third flow channel (23) is connected to a fifteenth flow channel (331) on an adjacent second flow channel plate (3), the fifteenth flow channel (331) is connected to an eleventh flow channel (26) on an adjacent first flow channel plate (2), the eleventh flow channel (26) is connected to a thirteenth flow channel (36) on an adjacent second flow channel plate (3), the thirteenth flow channel (36) is connected to a tenth flow channel (25) on an adjacent first flow channel plate (2), the tenth flow channel (25) is connected to a fourteenth flow channel (37) on an adjacent second flow channel plate (3), the fourteenth flow channel (37) is connected to a twelfth flow channel (27) on an adjacent first flow channel plate (2), the twelfth flow channel (27) is connected to a sixteenth flow channel (332) on an adjacent second flow channel plate (3), and the sixteenth flow channel (332) is connected to a fourth flow channel (24) on an adjacent first flow channel plate (2).

3. The stirring blade according to claim 2, characterized in that: The tenth flow channel (25) comprises a transverse flow channel (251), and both ends of the transverse flow channel (251) are connected to vertical flow channels (252) extending upwards; In each first flow channel plate (2), the first flow channel (21) and the third flow channel (23) are aligned vertically, the second flow channel (22) and the fourth flow channel (24) are aligned vertically, and the two vertical flow channels (252) in the tenth flow channel (25) are aligned vertically with the eleventh flow channel (26) and the twelfth flow channel (27), respectively; In each second flow channel plate (3), the fifth flow channel (31) and the eighth flow channel (34) are aligned vertically, and the sixth flow channel (32) and the ninth flow channel (35) are aligned vertically.

4. The stirring blade according to claim 2, characterized in that: The first flow channel (21) and the second flow channel (22) are arranged in parallel and at the same height, and the third flow channel (23), the eleventh flow channel (26), the twelfth flow channel (27), and the fourth flow channel (24) are arranged in parallel and at the same height; The fifth flow channel (31) and the sixth flow channel (32) are arranged in parallel and at the same height, the eighth flow channel (34) and the ninth flow channel (35) are arranged in parallel and at the same height, and the thirteenth flow channel (36) and the fourteenth flow channel (37) are arranged in parallel and at the same height.

5. The stirring blade according to claim 4, characterized in that: The heights of the top edges of the first flow channel (21) and the second flow channel (22) from the bottom edge of the first flow channel plate (2) are a, the heights of the bottom edges of the third flow channel (23), the eleventh flow channel (26), the twelfth flow channel (27), and the fourth flow channel (24) from the bottom edge of the first flow channel plate (2) are b, and the heights of the top edges of the third flow channel (23), the eleventh flow channel (26), the twelfth flow channel (27), and the fourth flow channel (24) from the bottom edge of the first flow channel plate (2) are c; The height of the top edge of the eighth flow channel (34) and the ninth flow channel (35) from the bottom edge of the second flow channel plate (3) is d, the height of the bottom edge of the fifth flow channel (31) and the sixth flow channel (32) from the bottom edge of the second flow channel plate (3) is e, the height of the top edge of the fifth flow channel (31) and the sixth flow channel (32) from the bottom edge of the second flow channel plate (3) is f, the height of the bottom edge of the thirteenth flow channel (36) and the fourteenth flow channel (37) from the bottom edge of the second flow channel plate (3) is g, the height of the top edge of the thirteenth flow channel (36) and the fourteenth flow channel (37) from the bottom edge of the second flow channel plate (3) is h, the height of the bottom edge of the fifteenth flow channel (331) and the sixteenth flow channel (332) from the bottom edge of the second flow channel plate (3) is i, and the height of the top edge of the fifteenth flow channel (331) and the sixteenth flow channel (332) from the bottom edge of the second flow channel plate (3) is j; The bottom edge of the first flow channel plate (2) and the bottom edge of the second flow channel plate (3) are of the same height; Then j≥c>i>h>f>b>a>g>e>d.

6. The stirring blade according to claim 5, characterized in that: The height of the farthest top edge of the tenth flow channel (25) from the bottom edge of the first flow channel plate (2) is k, k=a; the height of the bottom edge of the tenth flow channel (25) from the bottom edge of the first flow channel plate (2) is m, m=g.

7. The stirring blade according to claim 2, characterized in that: The first flow channel (21), the second flow channel (22), the third flow channel (23), the eleventh flow channel (26), the twelfth flow channel (27), the fourth flow channel (24), the fifth flow channel (31), the sixth flow channel (32), the eighth flow channel (34), the ninth flow channel (35), the thirteenth flow channel (36), and the fourteenth flow channel (37) are all strip groove structures extending in the up-down direction; The fifteenth flow channel (331) and the sixteenth flow channel (332) are both strip-shaped groove structures extending in the left-right direction.

8. A stirrer, comprising a stirring shaft (4), characterized in that: The stirring shaft (4) is provided with a stirring blade as claimed in any one of claims 1 to 7; A stirring shaft hole extending in the axial direction is provided in the middle of the stirring shaft (4), and the stirring shaft hole is divided into a first heat exchange medium circulation chamber (6) and a second heat exchange medium circulation chamber (7) by a partition plate (41); The first interface (11) is in sealed communication with the first heat exchange medium circulation chamber (6), and the second interface (12) is in sealed communication with the second heat exchange medium circulation chamber (7).

9. A reactor, characterized in that: Comprising the stirrer as claimed in claim 8.

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