CN210332646U - Stirring shaft and tubular reactor - Google Patents

Abstract

The embodiment of the utility model provides a (mixing) shaft and tubular reactor relates to reaction equipment technical field. The embodiment of the utility model provides a (mixing) shaft includes the axis body. The shaft body includes the shell body and sets up the interior casing in the shell body. The inner shell is provided with a first cavity, and a second cavity and a third cavity are formed between the outer shell and the inner shell. The outer side of the outer shell is used for installing a heat exchange piece, the heat exchange piece is provided with a heat exchange channel for communicating the second cavity with the third cavity, and the second cavity is communicated with the first cavity through a communication hole formed in the inner shell. First cavity is through first opening and external intercommunication, and the third cavity passes through second opening and external intercommunication to make heat transfer medium can pass in and out the axis body, carry out the in-process of stirring at the (mixing) shaft and realize the heat transfer to the stirring material, thereby improve the heat transfer effect, satisfy the heat transfer demand of stirring material.

Description

Stirring shaft and tubular reactor

Technical Field

The utility model relates to a reaction equipment technical field particularly, relates to a (mixing) shaft and tubular reactor.

Background

When the device stirs the material, often need to carry out the heat transfer to stirring simultaneously, for example in chemical reaction device, not only need stir the reactant to make reactant misce bene, moreover because some reactant can emit a large amount of heat in the reaction process, if the heat that produces can not in time take away, then probably lead to the result such as reaction out of control even explosion.

In the existing stirring equipment, heat exchange and stirring are usually realized through different equipment, for example, through a heat exchange module arranged outside the equipment and a stirring shaft in the equipment. However, the structure is often difficult to exchange heat of materials in the equipment, and the heat exchange efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a (mixing) shaft, it has heat transfer structure, can realize carrying out the heat exchange with the material at the stirring in-process, satisfies the heat transfer demand of material, improves heat exchange efficiency, for example.

The utility model discloses an aim still includes, provides a tubular reactor, and it can realize carrying out the heat transfer to the material in inside, satisfies the heat transfer demand of material, improves heat exchange efficiency.

The embodiment of the utility model discloses a can realize like this:

the embodiment of the utility model provides a stirring shaft, which comprises a shaft body, wherein the shaft body comprises an outer shell and an inner shell arranged in the outer shell; a first cavity and a first opening communicated with the first cavity are arranged in the inner shell;

a second chamber and a third chamber are formed between the inner shell and the outer shell, the outer side of the outer shell is used for installing a heat exchange piece with a heat exchange channel, and the second chamber is communicated with the third chamber through the heat exchange channel; the inner shell is provided with a communication hole, and the first cavity is communicated with the second cavity through the communication hole; the outer housing is also provided with a second opening communicating with the third chamber.

Optionally, the shaft body further includes a partition plate disposed between the inner casing and the outer casing, and the partition plate is configured to partition a region between the inner casing and the outer casing into a second chamber and a third chamber;

preferably, the number of the partition plates is at least one, the partition plates are fixedly connected to the inner wall of the outer shell, and a third chamber is formed between each partition plate and the inner wall;

preferably, the partition plate comprises a first radial partition plate and a second radial partition plate, the first radial partition plate and the second radial partition plate are arranged at intervals along the circumferential direction of the outer shell, and a third chamber is formed between the first radial partition plate and the second radial partition plate of the same partition plate;

preferably, the partition plate further comprises a circumferential partition plate, and two ends of the circumferential partition plate are fixedly connected with the first radial partition plate and the second radial partition plate respectively; the circumferential partition plate and the outer shell are arranged at intervals, and a third chamber is formed between the circumferential partition plate and the outer shell; the circumferential partition plate is arranged at intervals with the inner shell so as to enable the third chamber to be arranged at intervals with the inner shell;

preferably, the shaft body further comprises a closing plate arranged between the inner shell and the outer shell, and the closing plate is used for closing the second chamber;

preferably, the closing plate is sleeved outside the inner shell, and a sealing element is arranged between the inner shell and the closing plate;

preferably, a shoulder is arranged outside the inner shell, the shoulder is sleeved with the closing plate, and a sealing piece is arranged between the shoulder and the closing plate.

Optionally, the stirring shaft further comprises a heat exchange member fixedly connected to the outer side of the outer shell, a heat exchange channel is arranged in the heat exchange member, and two ends of the heat exchange channel are respectively communicated with the second chamber and the third chamber;

preferably, the heat exchange member is a stirring blade.

Optionally, a turbulent flow structure is further arranged in the heat exchange channel of the heat exchange piece;

preferably, the flow disturbing structure comprises a flow disturbing piece arranged in the heat exchange channel;

preferably, the flow disturbing structure comprises a groove or a protrusion arranged on the wall surface of the heat exchange channel.

Optionally, on the cross section of the outer shell, the number of the heat exchange members arranged along the circumferential direction of the outer shell is m, and the sum of the numbers of the second chambers and the third chambers is n;

when m is an even number, m is less than or equal to (n-1) multiplied by 2; when m is odd number, m is less than or equal to (n-1) multiplied by 2-1;

preferably, when m is an even number, m is (n-1) × 2; when m is an odd number, m ═ n-1 × 2-1;

preferably, the number of heat exchange members is even;

preferably, the number of heat exchange elements is 4, 6 or 8.

Optionally, an included angle is formed between a surface tangent of the stirring blade and a rotation axis of the shaft body;

preferably, the stirring blade is used for enabling the stirring material to have a tendency to move towards the material outlet;

preferably, the included angle between the surface tangent of the heat exchange piece and the rotating axis of the shaft body is β, and the included angle is more than 0 degree and less than β and less than or equal to 45 degrees;

preferably, the surface of the heat exchange piece is a plane, and the plane and the rotation axis of the shaft body form an included angle;

preferably, the included angle between the connecting line between the inlet and the outlet of the heat exchange channel and the axis of the shaft body is α, and the included angle is more than 0 degree and less than α and less than or equal to 45 degrees.

Optionally, the shaft body further comprises a rotary joint, and the inner shell and the outer shell are both rotatably connected with the rotary joint; the first opening and the second opening are both arranged on the rotary joint;

preferably, the communication hole and the first opening are respectively located at both ends of the inner case;

preferably, the communication hole is located at an end of the inner case at an end remote from the first opening.

Optionally, the number of the communication holes is multiple, and the communication holes are arranged on the peripheral wall of the inner shell;

preferably, the sum of the hole diameters of the plurality of communication holes is greater than or equal to the radial dimension of the first chamber.

Optionally, the outer side of the outer shell is provided with a heat exchange area for mounting a heat exchange element; the heat exchange region is located between the second opening and the communication hole in the axial direction of the shaft body.

The embodiment of the utility model also provides a tubular reactor. The tubular reactor comprises any one of the stirring shafts described above.

The beneficial effects of the stirring shaft and the tubular reactor of the embodiment of the utility model include, for example:

the embodiment of the utility model provides a stirring shaft, it includes the axis body. The shaft body includes the shell body and sets up the interior casing in the shell body. The inner shell is provided with a first cavity, and a second cavity and a third cavity are formed between the outer shell and the inner shell. The outer side of the outer shell is used for installing a heat exchange piece, the heat exchange piece is provided with a heat exchange channel for communicating the second cavity with the third cavity, and the second cavity is communicated with the first cavity through a communication hole formed in the inner shell. First cavity is through first opening and external intercommunication, and the third cavity passes through second opening and external intercommunication to make heat transfer medium can pass in and out the axis body, carry out the in-process of stirring at the (mixing) shaft and realize the heat transfer to the stirring material, thereby improve the heat transfer effect, satisfy the heat transfer demand of stirring material.

The embodiment of the utility model provides a tubular reactor is still provided, it includes above-mentioned arbitrary (mixing) shaft, consequently also has can be inside the stirring material carry out the heat transfer, satisfy stirring material's heat transfer demand, the effectual beneficial effect of heat transfer.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic cross-sectional view of a stirring shaft according to an embodiment of the present invention;

FIG. 2 is a schematic structural view of an outer shell of a stirring shaft provided in an embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view taken along line III-III of FIG. 1;

FIG. 4 is a schematic cross-sectional view of a second stirring shaft according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view taken at V-V in FIG. 3;

FIG. 6 is a schematic cross-sectional view of another circumferential partition of the stirring shaft provided in this embodiment;

FIG. 7 is a schematic cross-sectional view of a third stirring shaft according to an embodiment of the present invention;

FIG. 8 is a schematic view of a structure of a stirring blade in a stirring shaft according to an embodiment of the present invention;

FIG. 9 is a schematic cross-sectional view of a fourth stirring shaft according to an embodiment of the present invention;

FIG. 10 is an enlarged view of a portion of the structure at X in FIG. 1;

FIG. 11 is a schematic cross-sectional view taken along line XI-XI in FIG. 1;

fig. 12 is a schematic cross-sectional view of a tubular reactor at a first viewing angle according to an embodiment of the present invention;

fig. 13 is a schematic cross-sectional view of a tubular reactor at a second viewing angle according to an embodiment of the present invention.

Icon: 100-stirring shaft; 110-an inner housing; 111-a first chamber; 112-communication hole; 113-shoulder; 120-an outer shell; 121-a second chamber; 122-a third chamber; 130-stirring blades; 131-a heat exchange channel; 132-an inlet; 133-an outlet; 134-spoiler; 140-a separator; 141-a first radial baffle; 142-a second radial baffle; 143-a circumferential barrier; 150-a closure plate; 151-a seal; 160-a rotary joint; 161-a first opening; 162-a second opening; 200-tube reactor; 210-a reaction housing; 220-feed pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Fig. 1 is a schematic cross-sectional structure view of a stirring shaft 100 provided in this embodiment. Referring to fig. 1, the present embodiment provides a stirring shaft 100, which includes a shaft body. The shaft body includes an outer housing 120 and an inner housing 110 disposed inside the outer housing 120. The inner housing 110 is provided with a first chamber 111, and a second chamber 121 and a third chamber 122 are formed between the outer housing 120 and the inner housing 110. The outer side of the outer case 120 is used to mount a heat exchange member having a heat exchange passage 131 communicating the second chamber 121 and the third chamber 122, and the second chamber 121 communicates with the first chamber 111 through a communication hole 112 provided in the inner case 110. First cavity 111 communicates with the external world through first opening 161, and third cavity 122 communicates with the external world through second opening 162 to make heat transfer medium can pass in and out the axis body, carry out the in-process of stirring at (mixing) shaft 100 and realize the heat transfer to the stirring material, thereby improve the heat transfer effect, satisfy the heat transfer demand of stirring material.

The stirring shaft 100 provided in this embodiment is further described below:

in the present embodiment, the stirring shaft 100 includes a shaft body. The shaft body includes an outer housing 120 and an inner housing 110 disposed inside the outer housing 120. Specifically, the outer casing 120 is a tubular structure having a cavity therein, and the inner casing 110 is cylindrical and is disposed in the cavity of the outer casing 120 and coaxial with the outer casing 120, so as to form a cylindrical shaft body, and the shaft body rotates around its axis in the stirring process. The outer diameter of the inner housing 110 is smaller than the inner diameter of the outer housing 120, so that an annular cavity is formed between the inner housing 110 and the outer housing 120. The inner case 110 is a tubular member having a first chamber 111 therein, and the inner case 110 is opened with a communication hole 112 to communicate the first chamber 111 with an annular cavity formed between the inner case 110 and the outer case 120, and a heat exchange medium introduced into the first chamber 111 can enter the annular cavity through the communication hole 112, or a heat exchange medium introduced into the annular cavity can enter the first chamber 111 through the communication hole 112.

Fig. 2 is a schematic structural diagram of an outer shell 120 of the stirring shaft 100 provided in this embodiment. Referring to fig. 1 and 2, the shaft further includes a partition plate 140 disposed in the annular cavity, the annular cavity is divided into a second chamber 121 and a third chamber 122 by the partition plate 140, and the first chamber 111 is communicated with the second chamber 121 by a communication hole 112 formed in the inner housing 110. The outer wall of the outer shell 120 is provided with a heat exchange member, the heat exchange member has a heat exchange channel 131, the outer shell 120 is provided with an inlet 132 and an outlet 133, the inlet 132 is communicated with the second chamber 121, the outlet 133 is communicated with the third chamber 122, and therefore the second chamber 121 is communicated with the third chamber 122 through the heat exchange channel 131. The outer housing 120 has a second opening 162 for communicating the third chamber 122 with the outside, and in use, after the heat exchange medium enters the shaft body from the first opening 161, the heat exchange medium passes through the first chamber 111, the second chamber 121, and the third chamber 122 in sequence, and finally leaves the shaft body from the second opening 162, or the heat exchange medium may enter the shaft body from the second opening 162 and then leaves the shaft body from the first opening 161.

FIG. 3 is a schematic cross-sectional view taken along line III-III in FIG. 1. Referring to fig. 3, the number of the partition plates 140 is at least one, and the partition plates 140 are fixedly connected to the inner wall of the outer housing 120, so that a third chamber 122 is formed between the partition plates 140 and the outer housing 120, and the remaining part of the annular cavity between the outer housing 120 and the inner housing 110 is the second chamber 121. Specifically, in the present embodiment, the number of the partition plates 140 is two, thereby forming two third chambers 122. The two partition plates 140 are disposed at intervals along the circumferential direction of the outer shell 120 and are respectively fixedly connected to the inner wall of the outer shell 120, so as to divide the inner wall of the outer shell 120 into four regions distributed along the circumferential direction, namely a first region, a second region, a third region and a fourth region, wherein the first region and the third region are respectively used for forming two third chambers 122, and the second region and the fourth region are respectively used for forming the second chamber 121.

It should be noted that the number of the partition plates 140 is not limited specifically, and it is understood that in other embodiments, the number of the partition plates 140 may be specifically set according to the requirement, for example, the number of the partition plates 140 is set to be one, so as to divide the annular cavity between the inner shell 110 and the outer shell 120 into a second chamber 121 and a third chamber 122 (as shown in fig. 4).

Optionally, each partition 140 includes two radial partitions 140, and the two radial partitions 140 are a first radial partition 141 and a second radial partition 142, respectively. The first radial partition 141 and the second radial partition 142 are circumferentially spaced along the outer casing 120, and radially outer ends of the first radial partition 141 and the second radial partition 142 are fixedly connected with an inner wall of the outer casing 120. In this way, the third chamber 122 is formed between the first radial partition 141 and the second radial partition 142 of the same partition 140. Further, the partition plate 140 further includes a circumferential partition plate 143, the circumferential partition plate 143 is spaced from the outer casing 120, and two ends of the circumferential partition plate 143 are respectively fixedly connected to the radial outer ends of the first radial partition plate 141 and the second radial partition plate 142, so that the third chamber 122 is defined by the inner walls of the first radial partition plate 141, the circumferential partition plate 143, the second radial partition plate 142, and the outer casing 120. The circumferential partition 143 is spaced apart from the inner housing 110, so that the third chamber 122 is formed to be spaced apart from the inner housing 110, and the manufacturing process is more convenient. Optionally, the circumferential partition 143 is fixed to the first radial partition 141 and the second radial partition 142 by welding, and it is understood that in other embodiments, the circumferential partition 143 may be integrally formed with the first radial partition 141 and the second radial partition 142 as required.

FIG. 5 is a schematic cross-sectional view at V-V in FIG. 3. Referring to fig. 3 and 5, optionally, the cross section of the circumferential partition 143 is a circular arc having the same center as the outer shell 120. Optionally, the first radial partition 141 and the second radial partition 142 are elongated and extend along the axial direction of the shaft body, so that the formed third chamber 122 extends along the axial direction, it can be understood that in other embodiments, the extending direction of the partition 140 may be set according to requirements, so that the extending direction of the formed third chamber 122 meets the requirements, for example, the partition 140 is set to extend spirally around the axial direction of the shaft body, or extend in an S shape, and the like. Alternatively, the circumferential partition 143 extends linearly along the axial direction of the shaft body, and it is understood that in other embodiments, the circumferential partition 143 may be shaped as required, for example, in an S shape (as shown in fig. 6).

It should be noted that the specific structure and shape of the partition plate 140 are not limited herein, and it is understood that in other embodiments, the shape of the partition plate 140 may be specifically set according to requirements, for example, the partition plate 140 is set to be a curved surface opposite to the bending direction of the inner wall surface of the outer shell 120, so that the third chamber 122 is formed between the partition plate 140 fixedly connected to the outer shell 120 and the outer shell 120; alternatively, the partition plate 140 may be configured to include only the first radial partition plate 141 and the second radial partition plate 142 that are circumferentially spaced apart, and the third chamber 122 may be formed by fixedly coupling the radially inner ends of the first radial partition plate 141 and the second radial partition plate 142 to the inner housing 110 (as shown in fig. 7), and the communication hole 112 may be positioned to correspond to the second chamber 121 to communicate the first chamber 111 with the second chamber 121, or the communication hole 112 may communicate both the first chamber 111 with the second chamber 121 and the first chamber 111 with the third chamber 122.

Referring to fig. 1 and 3 in combination, the stirring shaft 100 further includes a heat exchanging member mounted on an outer wall of the outer housing 120, in this embodiment, the heat exchanging member is a stirring blade 130 of the stirring shaft 100, a heat exchanging channel 131 is disposed in the stirring blade 130, an inlet 132 of the heat exchanging channel 131 is communicated with the second chamber 121, an outlet 133 of the heat exchanging channel 131 is communicated with the third chamber 122, and a heat exchanging medium needs to flow between the second chamber 121 and the third chamber 122 through the heat exchanging channel 131 during a flowing process of the shaft, so as to improve heat exchanging efficiency.

For the convenience of processing, the stirring blades 130 are arranged as a plane, and the plane is arranged at an included angle with the axis of the shaft body, the outlet 133 and the inlet 132 of the heat exchange channel 131 are arranged at intervals along the extending direction of the stirring blades 130, so the included angle α between the connecting line between the outlet 133 and the inlet 132 of the heat exchange channel 131 and the axis of the outer shell 120 is the included angle between the plane of the stirring blades 130 and the axis of the shaft body, and the included angle is more than 0 degree and less than α and less than or equal to 45 degrees (as shown in fig..

Fig. 8 is a schematic structural diagram of the stirring blade 130 in the stirring shaft 100 according to this embodiment. Referring to fig. 8, the heat exchange channel 131 in the stirring vane 130 is U-shaped, and two free ends of the U-shape are respectively an inlet 132 and an outlet 133 of the heat exchange channel 131, so as to ensure the heat exchange efficiency of the stirring vane 130. It is understood that in other embodiments, the shape of the heat exchanging channel 131 may be specifically set according to the requirement. In order to improve the heat exchange efficiency of the stirring vane 130, further, a flow disturbing structure is further arranged in the heat exchange channel 131 of the stirring vane 130. Specifically, the spoiler structure includes a plurality of spoilers 134 that set up in heat transfer channel 131, produces the disturbance through setting up spoilers 134 to the flow of heat transfer medium, reaches the purpose that reduces the laminar flow, increases the torrent.

It should be noted that, the turbulent flow structure is not specifically limited herein, and it can be understood that, in other embodiments, the turbulent flow structure may be configured as a groove or a protrusion on the inner wall of the heat exchange channel 131 according to the requirement.

Further, in the cross section of the outer housing 120, the number of the stirring blades 130 arranged along the circumferential direction of the outer housing 120 is m, and the sum of the numbers of the second chambers 121 and the third chambers 122 is n. When m is an even number, m is less than or equal to (n-1) multiplied by 2; when m is odd number, m is less than or equal to (n-1) multiplied by 2-1. Preferably, when m is an even number, m is (n-1) × 2, and at this time, the second chamber 121 and the third chamber 122 respectively located at two of the radial partitions 140 can be communicated through the heat exchange channel 131 of at least one of the agitating blades 130, so that the utilization rate of the partitions 140 is higher. When m is an odd number, m is (n-1) × 2-1, and at this time, the second and third chambers 121 and 122 on both sides of one radial partition 140 except for one radial partition 140 can be communicated through the heat exchange channel 131 of at least one agitating blade 130 (as shown in fig. 9). Preferably, the number of m is even, in which case the utilization of the partition 140 is higher. Preferably, the number of m is 4, 6 or 8.

Referring to fig. 1, in the present embodiment, the shaft further includes a rotary joint 160, the inner housing 110 and the outer housing 120 are rotatably connected to the rotary joint 160, and during the rotation of the shaft, the inner housing 110 and the outer housing 120 rotate synchronously. First opening 161 and second opening 162 are all seted up on rotary joint 160, so only need set up the one end of axis body into rotary joint 160 can, the other end of axis body then has more spaces and can design according to the demand, can save the axis body simultaneously and keep away from the seal structure of rotary joint 160 one end, reduce the dew point, when using in tubular reactor in addition, the structural design of tubular reactor one end is not restricted by the pivot. It is understood that in other embodiments, the first opening 161 and the second opening 162 may be disposed at two ends of the shaft body according to requirements.

Optionally, the communication hole 112 is formed on the circumferential surface of the inner housing 110, and the communication hole 112 and the first opening 161 are respectively located at two ends of the inner housing 110, which helps to prolong the stay time of the heat exchange medium in the shaft body. Preferably, the communication hole 112 is located at an end of the inner case 110 remote from the first opening 161. Preferably, the number of the communication holes 112 is plural, and the plurality of communication holes 112 are all opened on the peripheral wall of the inner case 110. Preferably, the sum of the diameters of the plurality of communication holes 112 is greater than or equal to the radial dimension of the first chamber 111, such that the plurality of communication holes 112 form a flow area greater than the cross-sectional area of the first chamber 111, thereby reducing the influence of the communication holes 112 during the flow of the heat exchange medium between the first chamber 111 and the second chamber 121. And because the first opening 161 and the second opening 162 are located at one end of the shaft, the communication hole 112 is located at the other end of the shaft, when the heat exchange medium is introduced into the shaft from the first opening 161, the heat exchange medium is firstly introduced to the tail end of the first chamber 111, and then enters the second chamber 121 through the communication hole 112, and the heat exchange medium entering the second chamber 121 enters the third chamber 122 through the heat exchange channel 131 in the stirring blade 130, for the stirring blade 130 near one end of the communication hole 112, the inflow pressure of the heat exchange medium is large, and the return resistance is also large, and for the stirring blade 130 near one end of the second opening 162, the inflow pressure of the heat exchange medium is small, and the return resistance is also small, so that the problem of short circuit backflow cannot occur in the distribution of the heat exchange medium, and the heat exchange effect is better. Preferably, the portion of the outer circumferential surface of the outer casing 120 for mounting the stirring blades 130 is a heat exchange region, and the heat exchange region is located between the second opening 162 and the communication hole 112 along the axial direction of the shaft body, so as to ensure that each stirring blade 130 can bring about a good heat exchange effect.

FIG. 10 is an enlarged view of a portion X of FIG. 1, and FIG. 11 is a schematic sectional view taken along line XI-XI of FIG. 1. Referring to fig. 1, 10 and 11, in the present embodiment, the shaft body further includes a closing plate 150 disposed between the inner housing 110 and the outer housing 120, and the shape of the closing plate 150 matches the cross section of the second chamber 121, so that the closing plate 150 closes the end of the second chamber 121 along the axial direction of the shaft body, and therefore the heat exchange medium entering the shaft body can flow along the sequence of the first chamber 111, the second chamber 121, the heat exchange channel 131 and the third chamber 122, or along the sequence of the third chamber 122, the heat exchange channel 131, the second chamber 121 and the first chamber 111. Optionally, the radially outer end of the closing plate 150 is fixedly connected to the partition plate 140 and the outer casing 120 by welding, so that the sealing effect between the closing plate 150 and the partition plate 140 and the outer casing 120 can be ensured.

Optionally, a connection hole is formed in the closing plate 150, the inner housing 110 is inserted into the connection hole, and a sealing member 151 is disposed between the closing plate 150 and the inner housing 110, so as to ensure a sealing effect between the sealing plate and the inner housing 110. Specifically, a shoulder 113 is further provided outside the inner housing 110, and the shoulder 113 is formed by radially outwardly projecting the outer circumferential surface of the inner housing 110. The size of the connecting hole of the closing plate 150 is matched with the radial size of the shoulder 113, the closing plate 150 is sleeved at the shoulder 113, and sealing is ensured by arranging a sealing element 151 between the shoulder 113 and the closing plate 150. Meanwhile, the requirement for the precision of machining and assembling can be reduced by the arrangement of the shoulder 113 and the seal 151. Optionally, since the inner housing 110 and the outer housing 120 rotate synchronously when the stirring shaft 100 provided in this embodiment rotates, the sealing between the closing plate 150 and the inner housing 110 is static sealing, and the sealing element 151 disposed between the closing plate 150 and the inner housing 110 is an O-ring, so that the O-ring is used to save cost and is convenient to disassemble and assemble.

According to the stirring axle 100 provided in this embodiment, the working principle of the stirring axle 100 is as follows:

in the use, heat transfer medium passes through the first opening 161 entering axis body on the (mixing) shaft 100, flows out through second opening 162 after the heat transfer is ended to carry out the heat transfer to the material through (mixing) shaft 100 in the inside of stirring the material, thereby improve the heat transfer effect, further satisfy the heat transfer demand of material. The heat exchange medium entering the shaft body first flows from the front end of the shaft body to the tail end of the shaft body through the first chamber 111, enters the second chamber 121 through the communication hole 112 arranged on the inner housing 110, and flows from the tail end of the shaft body to the front end of the shaft body along the second chamber 121, meanwhile, in the flowing process, part of the heat exchange medium flows into the heat exchange channel 131 in the stirring blade 130, flows into the third chamber 122 through the heat exchange channel 131, continues to flow to the front end of the shaft body, and finally flows out of the shaft body from the second opening 162, or the heat exchange medium can be introduced from the second opening 162, and finally flows out from the first opening 161.

The stirring shaft 100 provided by the embodiment has at least the following advantages:

the embodiment of the utility model provides a (mixing) shaft 100, it has heat transfer structure, thereby can improve heat exchange efficiency from the inside heat transfer of material at the stirring in-process through letting in heat transfer medium to (mixing) shaft 100, satisfies the heat transfer demand of material. Moreover, the stirring shaft 100 can increase the relative speed of heat exchange media, so that the heat transfer coefficient can be increased, the heat exchange efficiency is higher, and the temperature control effect is better. Through carrying out concrete setting to the position of first opening 161, second opening 162 and intercommunicating pore 112, avoid appearing stirring vane 130 by the problem of short circuit backward flow for each stirring vane 130 can both exert good heat transfer effect, further improves the heat transfer effect.

Fig. 12 is a schematic cross-sectional view of the tubular reactor 200 provided in this embodiment at a first viewing angle, and fig. 13 is a schematic cross-sectional view of the tubular reactor 200 provided in this embodiment at a second viewing angle. Referring to fig. 12 and fig. 13, the present embodiment further provides a tubular reactor 200, which includes the stirring shaft 100. Because this tubular reactor 200 includes foretell (mixing) shaft 100, consequently also have heat exchange efficiency height, temperature control effect better, can further satisfy the beneficial effect of the heat transfer demand of material.

Further, tubular reactor 200 still includes reaction shell 210, and reaction shell 210 has the reaction chamber, and (mixing) shaft 100 sets up in the reaction chamber to stirring the reaction mass in the reaction chamber, promoting reaction mass misce bene. The reaction housing 210 is further provided with a plurality of feed pipes 220 communicated with the reaction chamber, and the reaction materials are introduced into the reaction chamber through the feed pipes 220. The feeding pipes 220 are uniformly distributed along the axial direction of the reaction shell 210, so that uniform feeding is realized.

To sum up, the embodiment of the utility model provides a (mixing) shaft 100 and tubular reactor, it is through establishing the heat transfer structure in (mixing) shaft 100 to can carry out the heat transfer from the material is inside at the stirring in-process, satisfy the heat transfer demand of material, through the concrete setting to (mixing) shaft 100 inner structure, improve heat transfer coefficient moreover, heat exchange efficiency is higher, the temperature control effect is better.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (29)

1. A stirring shaft is characterized by comprising a shaft body, wherein the shaft body comprises an outer shell and an inner shell arranged in the outer shell; a first cavity and a first opening communicated with the first cavity are arranged in the inner shell;

a second chamber and a third chamber are formed between the inner shell and the outer shell, the outer side of the outer shell is used for installing a heat exchange piece with a heat exchange channel, and the second chamber is communicated with the third chamber through the heat exchange channel; the inner shell is provided with a communication hole, and the first cavity is communicated with the second cavity through the communication hole; the outer shell is also provided with a second opening communicated with the third chamber.

2. The mixing shaft as recited in claim 1, further comprising a partition disposed between said inner and outer housings for dividing a region between said inner and outer housings into said second and third chambers.

3. A mixer shaft as claimed in claim 2, wherein said number of said partition walls is at least one, said partition walls being fixedly attached to an inner wall of said outer housing, and one of said third chambers being formed between each of said partition walls and said inner wall.

4. A mixing shaft as claimed in claim 3, wherein said partition comprises first and second radial partitions spaced circumferentially of said outer housing, said third chamber being defined between said first and second radial partitions of the same partition.

5. The mixing shaft according to claim 4, wherein said partition further comprises a circumferential partition, both ends of said circumferential partition being fixedly connected to said first radial partition and said second radial partition, respectively; the circumferential partition plate and the outer shell are arranged at intervals, and a third chamber is formed between the circumferential partition plate and the outer shell; the circumferential partition plate and the inner shell are arranged at intervals, so that the third chamber and the inner shell are arranged at intervals.

6. The mixing shaft of claim 2, wherein said shaft body further comprises a closure plate disposed between said inner and outer shells for closing said second chamber.

7. The mixing shaft according to claim 6, wherein said closing plate is fitted around said inner shell, and a seal is provided between said inner shell and said closing plate.

8. The mixing shaft as recited in claim 7, wherein a shoulder is provided outside said inner shell, said closing plate is sleeved on said shoulder, and said sealing member is provided between said shoulder and said closing plate.

9. The stirring shaft as in claim 1, further comprising a heat exchange member fixedly connected to the outer side of said outer shell, wherein a heat exchange channel is provided in said heat exchange member, and both ends of said heat exchange channel are respectively communicated with said second chamber and said third chamber.

10. A mixer shaft as claimed in claim 9, in which said heat exchange element is a mixer blade.

11. A mixing shaft as recited in claim 9, wherein said heat exchange passages of said heat exchange member are further provided with turbulating structures.

12. The mixing shaft as recited in claim 11, wherein said turbulating structure comprises turbulators disposed within said heat exchange channel.

13. The stirring shaft as in claim 11, wherein said turbulating structure comprises grooves or protrusions provided on the wall surface of said heat exchange channel.

14. A mixer shaft according to claim 9, in which, in cross-section of the outer housing, the number of heat exchange elements arranged circumferentially of the outer housing is m, and the sum of the numbers of second and third chambers is n;

when m is an even number, m is less than or equal to (n-1) multiplied by 2; when m is odd number, m is less than or equal to (n-1) multiplied by 2-1.

15. A mixing shaft as claimed in claim 14, wherein when m is even, m is (n-1) x 2; when m is an odd number, m is (n-1) × 2-1.

16. A mixer shaft as claimed in claim 14, in which the number of heat exchange elements is even.

17. A mixer shaft as claimed in claim 16, in which the number of heat exchange elements is 4, 6 or 8.

18. A mixer shaft as claimed in claim 10, in which the tangent to the surface of the mixer blades is disposed at an angle to the axis of rotation of the shaft body.

19. A mixer shaft as claimed in claim 18, in which the mixer blades are adapted to impart to the material being mixed a tendency to move towards the material outlet.

20. A mixer shaft as claimed in claim 18, in which the tangent to the surface of the heat exchange element subtends an angle of β, 0 ° < β ° or less than 45 ° with respect to the axis of rotation of the shaft body.

21. A mixer shaft as claimed in claim 9, in which the surface of the heat exchange element is planar and is disposed at an angle to the axis of rotation of the shaft body.

22. A mixer shaft as claimed in claim 21, in which the line between the inlet and outlet of the heat exchange channels makes an angle α with 0 ° < α ° or 45 ° with the axis of the shaft body.

23. A mixer shaft as claimed in any one of claims 1 to 22, wherein said shaft body further includes a rotary joint, said inner and outer housings each being rotatably connected to said rotary joint; the first opening and the second opening are both arranged on the rotary joint.

24. A mixer shaft as claimed in claim 23, in which said communication aperture and said first opening are located at respective ends of said inner housing.

25. A mixer shaft as claimed in claim 24, in which said communication aperture is located at the end of said inner housing remote from said first open end.

26. A mixer shaft according to any one of claims 1 to 22, wherein said communication holes are plural in number, and plural are opened in a peripheral wall of said inner housing.

27. The mixing shaft according to claim 26, wherein the sum of the hole diameters of a plurality of said communication holes is greater than or equal to the radial dimension of said first chamber.

28. A mixer shaft according to any one of claims 1 to 22, wherein the outer side of the outer shell has a heat exchange region for mounting said heat exchange element; the heat exchange region is located between the second opening and the communication hole in the axial direction of the shaft body.

29. A tubular reactor, characterized in that it comprises a stirring shaft according to any one of claims 1 to 28.

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