Feeding back-mixing device and system based on stator-rotor reactor

Abstract

The utility model provides a feeding back-mixing device and system based on a stator-rotor reactor, and the feeding back-mixing device based on the stator-rotor reactor comprises a feeding hopper and a circulating mechanism, the utility model further discloses a feeding back-mixing system based on the stator-rotor reactor. The feeding back-mixing system comprises the stator-rotor reactor and the feeding back-mixing device based on the stator-rotor reactor. According to the utility model, the large-batch and continuous production can be realized, and meanwhile, the influence on the product performance caused by the mixed reaction of the reaction liquid raw materials in the feeding hopper before entering the rotor-stator reaction area can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of material synthesis, in particular to a feeding and back-mixing device and a system based on a stator-rotor reactor. Background Art

[0002] A stator-rotor reactor is a general term for equipment used to prepare ultrafine nanopowder materials. Its main structure consists of two core components: a non-rotating stator and a high-speed rotating rotor. The rotor's high centrifugal and shear forces enhance rapid mass transfer within the reactor, increasing collision rates and accelerating the reaction rate, ultimately controlling the particle size of the nanopowder (e.g., patents CN 102616749B and CN 106673044 A).

[0003] Traditional stator-rotor reactors (including colloid mills, rotating liquid film reactors, etc.) are mainly composed of several parts such as a high-speed motor, a rotor, a stator, and a hopper. After the reaction liquid raw materials flow through the hopper, the high-speed motor drives the rotor to rotate at high speed, and quickly mixes and collides in the rotor-stator reaction area, and then reacts to produce products. Since the reaction is completed in a relatively short time, the reaction time can be effectively controlled, and the nucleation process and the crystallization process can be effectively separated. Then, the reaction parameters at different reaction ends of the nucleation process and the crystallization process can be adjusted to achieve the purpose of controlling the product particle size. Despite this, the existing equipment still has the following two problems:

[0004] 1. The hopper is a container for short-term storage of reaction liquid raw materials and products. The size of the hopper limits the reaction output of the device, making it difficult for existing equipment to achieve large-scale and continuous production;

[0005] 2. The reaction liquid raw materials enter the rotor-stator reaction area through the hopper. As the reaction product slurry stored in the hopper increases, when the reaction slurry is higher than the upper end of the rotor-stator reaction area, the reaction liquid raw materials will be mixed and reacted in the hopper before entering the rotor-stator reaction area, affecting product performance. Utility Model Content

[0006] In response to the technical problems raised above, a feeding and remixing device and system based on a stator-rotor reactor is provided. This utility model can achieve large-scale, continuous production while also preventing the reaction liquid and raw materials from mixing in the feeding hopper before entering the rotor-stator reaction zone, which would affect product performance. The technical means adopted by this utility model are as follows:

[0007] In the first aspect, a feeding and back-mixing device based on a stator-rotor reactor comprises a feeding hopper with a large opening facing upward and a small opening facing downward; a feeding gap is provided in the side wall of the feeding hopper along its circumferential direction, and one or more dividing strips are distributed in the feeding gap along its circumferential direction, the one or more dividing strips divide the feeding gap into several feeding gap sections, the input port of the feeding gap section is provided on the outer surface of the feeding hopper, and the output port of the feeding gap section is provided on the bottom surface of the feeding hopper; the output port of the feeding gap section and the small opening of the feeding hopper can both be connected to the input port of the reaction gap zone of the stator-rotor reactor; it also includes a circulation mechanism; the circulation mechanism comprises a first-level back-mixing pipe, a circulation pump and a second-level back-mixing pipe, the output port of the first-level back-mixing pipe is connected to the input port of the circulation pump, and the output port of the circulation pump is connected to the input port of the second-level back-mixing pipe; the input port of the first-level back-mixing pipe can be connected to the output port of the reaction gap zone of the stator-rotor reactor, and the output port of the second-level back-mixing pipe can be connected to the large opening of the feeding hopper.

[0008] Furthermore, it also includes a storage tank, and the output port of the first-level return mixing pipe is connected to the input port of the circulation pump through the storage tank; the output port of the first-level return mixing pipe and the input port of the circulation pump are both connected to the cavity of the storage tank.

[0009] Furthermore, it also includes a stirring mechanism; the stirring mechanism includes a stirring blade and a drive motor, and the stirring blade is installed on the output shaft of the drive motor; the stirring blade is located in the cavity of the storage tank, and the drive motor is installed on the storage tank.

[0010] Furthermore, a three-way valve is installed on the first-level return mixing pipe; when the valve core of the three-way valve is located at the lower part of the valve body, the left inlet of the three-way valve is connected with the right outlet and is not connected with the lower outlet; when the valve core of the three-way valve is located at the upper part of the valve body, the left inlet of the three-way valve is connected with the lower outlet and is not connected with the right outlet; the left inlet of the three-way valve is connected with the input port of the first-level return mixing pipe, and the right outlet of the three-way valve is connected with the output port of the first-level return mixing pipe.

[0011] In the second aspect, a feeding and back-mixing system based on a stator-rotor reactor includes a stator-rotor reactor, wherein the stator-rotor reactor includes a high-speed motor, a rotor and a stator, the axis of the output shaft of the high-speed motor is perpendicular to the horizontal plane, the rotor is coaxially mounted on the output shaft of the high-speed motor, the stator is mounted on the casing of the high-speed motor and coaxially sleeved outside the rotor, a reaction gap zone with an open upper end and a closed lower end is formed between the rotor and the stator, the open end of the reaction gap zone is the input port of the reaction gap zone, and the output port of the reaction gap zone is opened on the outer surface of the stator, and also includes the feeding and back-mixing device based on the stator-rotor reactor described in any one of the first aspects, the output port of the feeding gap section and the small port of the feeding hopper in the feeding and back-mixing device based on the stator-rotor reactor are both connected to the input port of the reaction gap zone of the stator-rotor reactor, and the output port of the secondary back-mixing pipe in the feeding and back-mixing device based on the stator-rotor reactor is connected to the large port of the feeding hopper.

[0012] Furthermore, a circulating water cavity is provided in the stator; and a circulating water inlet and a circulating water outlet communicating with the circulating water cavity are provided on the top surface of the stator.

[0013] The utility model has the following advantages:

[0014] 1. In the present invention, several kinds of reaction liquid raw materials enter several feeding gap sections through the input ports of several feeding gap sections in a one-to-one correspondence. Since the feeding gap sections are separated by dividing strips and are not connected to each other, the several kinds of reaction liquid raw materials will not mix and react in the feeding hopper before entering the reaction gap area, thereby avoiding affecting the performance of the product; the materials output from the output port of the reaction gap area are refluxed to the large port of the feeding hopper through the first-level back-mixing pipe, the circulation pump and the second-level back-mixing pipe in sequence under the action of the circulation pump, and then flow from the large port of the feeding hopper to the small port and enter the output port of the reaction gap area, so that the materials realize the circulation of "reaction gap area, first-level back-mixing pipe, circulation pump, second-level back-mixing pipe, feeding hopper", so that the present invention can realize large-scale and continuous production.

[0015] 2. In the present invention, the output port of the first-stage return mixing pipe is connected to the input port of the circulation pump through a storage tank, and the storage tank can store the material output from the first-stage return mixing pipe.

[0016] 3. In the present invention, the stirring blades can stir the material in the storage tank under the drive of the driving motor, so that the material in the storage tank can be quickly mixed; at the same time, the stirring blades can also quickly pump the material in the storage tank into the circulation pump, thereby improving the production efficiency of the present invention.

[0017] 4. In the present invention, when the material needs to continue to react, the valve core of the three-way valve is adjusted so that it is located at the lower part of the valve body. At this time, the left inlet of the three-way valve is connected to the right outlet and is not connected to the lower outlet. The material will circulate and react in a feeding and back-mixing system based on a stator-rotor reactor provided by the present invention; when the material needs to be output, the valve core of the three-way valve is adjusted so that it is located at the upper part of the valve body. At this time, the left inlet of the three-way valve is connected to the lower outlet and is not connected to the right outlet, and the material will be output from the lower outlet of the three-way valve.

[0018] 5. In the present invention, the circulating water enters the circulating water chamber through the circulating water inlet and is then output to the outside of the circulating water chamber through the circulating water outlet, so that the circulating water can take away the heat in the reaction gap area, thereby preventing the temperature in the reaction gap area from being too high and affecting the reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 This is the overall structural diagram of a feeding and back-mixing device and system based on a stator-rotor reactor of the utility model;

[0021] Figure 2 This is a top view of the hopper in Example 1 of the present utility model;

[0022] Figure markings: 1-feeding hopper; 2-feeding gap; 3-circulating water inlet; 4-stator; 5-rotor; 6-high-speed motor; 7-reaction gap area; 8-circulating water chamber; 9-circulating water outlet; 10-three-way valve; 11-first-stage back-mixing pipe; 12-storage tank; 13-stirring mechanism; 14-circulating pump; 15-second-stage back-mixing pipe; 16-dividing bar; 201-feeding gap section; 1301-driving motor; 1302-stirring blade. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1:

[0025] As shown in Figure 1 and Figure 2 , a feeding back-mixing device based on a stator-rotor reactor comprises a feeding hopper 1 with a large opening upward and a small opening downward; a feeding slot 2 is formed in the sidewall of the feeding hopper 1 along the circumferential direction thereof, one or more partition strips 16 are distributed in the feeding slot 2 along the circumferential direction thereof, the one or more partition strips 16 separate the feeding slot 2 into a plurality of feeding slot sections 201, the input port of each feeding slot section 201 is formed on the outer side surface of the feeding hopper 1, and the output port of each feeding slot section 201 is formed on the bottom surface of the feeding hopper 1; the output port of each feeding slot section 201 and the small opening of the feeding hopper 1 are both in communication with the input port of a reaction slot area 7 of the stator-rotor reactor; further comprising a circulating mechanism; the circulating mechanism comprises a first back-mixing pipe 11, a circulating pump 14 and a second back-mixing pipe 15, the output port of the first back-mixing pipe 11 is in communication with the input port of the circulating pump 14, the output port of the circulating pump 14 is in communication with the input port of the second back-mixing pipe 15; the input port of the first back-mixing pipe 11 is in communication with the output port of the reaction slot area 7 of the stator-rotor reactor, and the output port of the second back-mixing pipe 15 is in communication with the large opening of the feeding hopper 1.

[0026] Specifically, the feeding slot 2 has a ring structure, two partition strips 16 are arranged in the feeding slot 2 and are uniformly distributed therein, and the two partition strips 16 separate the feeding slot 2 into two semi-ring structure feeding slot sections 201, which can respectively accommodate reaction liquid A and reaction liquid B.

[0027] In this embodiment, a storage tank 12 is further included, the output port of the first back-mixing pipe 11 is in communication with the input port of the circulating pump 14 through the storage tank 12, and the output port of the first back-mixing pipe 11 and the input port of the circulating pump 14 are both in communication with the cavity of the storage tank 12.

[0028] Specifically, the output port of the first back-mixing pipe 11 is located above the cavity of the storage tank 12, and the input port of the circulating pump 14 is located below the cavity of the storage tank 12.

[0029] In this embodiment, a stirring mechanism 13 is further included; the stirring mechanism 13 comprises stirring blades 1302 and a driving motor 1301, the stirring blades 1302 are installed on the output shaft of the driving motor 1301, the stirring blades 1302 are located in the cavity of the storage tank 12, and the driving motor 1301 is installed on the storage tank 12.

[0030] In this embodiment, a three-way valve 10 is installed on the first-level return mixing pipe 11; when the valve core of the three-way valve 10 is located at the lower part of the valve body, the left inlet of the three-way valve 10 is connected to the right outlet and is not connected to the lower outlet; when the valve core of the three-way valve 10 is located at the upper part of the valve body, the left inlet of the three-way valve 10 is connected to the lower outlet and is not connected to the right outlet; the left inlet of the three-way valve 10 is connected to the input port of the first-level return mixing pipe 11, and the right outlet of the three-way valve 10 is connected to the output port of the first-level return mixing pipe 11; the three-way valve 10 is a prior art and will not be described in detail here.

[0031] Example 2:

[0032] like Figure 1 As shown, a feeding and back-mixing system based on a stator-rotor reactor includes a stator-rotor reactor, the stator-rotor reactor includes a high-speed motor 6, a rotor 5 and a stator 4, the axis of the output shaft of the high-speed motor 6 is perpendicular to the horizontal plane, the rotor 5 is coaxially mounted on the output shaft of the high-speed motor 6, the stator 4 is mounted on the casing of the high-speed motor 6 and is coaxially sleeved outside the rotor 5, a reaction gap area 7 with an open upper end and a closed lower end is formed between the rotor 5 and the stator 4, the open end of the reaction gap area 7 is the input port of the reaction gap area 7, and the output port of the reaction gap area 7 is opened on the outer surface of the stator 4, and also includes the feeding and back-mixing device based on the stator-rotor reactor described in any one of Example 1, the output port of the feeding gap section 201 in the feeding and back-mixing device based on the stator-rotor reactor and the small port of the feeding hopper 1 are both connected to the input port of the reaction gap area 7 of the stator-rotor reactor, and the output port of the secondary back-mixing pipe 15 in the feeding and back-mixing device based on the stator-rotor reactor is connected to the large port of the feeding hopper 1.

[0033] In this embodiment, a circulating water cavity 8 is defined in the stator 4 ; and a circulating water inlet 3 and a circulating water outlet 9 communicating with the circulating water cavity 8 are defined on the top surface of the stator 4 .

[0034] The working principle of this embodiment is as follows:

[0035] The reaction liquid A and the reaction liquid B are respectively fed into the two feeding gap sections 201 through the input ports of the two feeding gap sections 201. Since the two feeding gap sections 201 are separated by two dividing bars 16 and are not connected to each other, the reaction liquids A and B will not mix and react in the feeding hopper 1 before entering the reaction gap area 7, thereby avoiding affecting the performance of the product.

[0036] The reaction liquid A and the reaction liquid B are respectively input into the reaction slot area 7 through the output ports of the two feeding slot sections 201, and mixed reaction occurs in the reaction slot area 7, while the circulating water is input into the circulating water cavity 8 through the circulating water inlet 3, and then output to the outside of the circulating water cavity 8 through the circulating water outlet 9, so that the circulating water can take away the heat in the reaction slot area 7, and the temperature in the reaction slot area 7 is prevented from being too high to affect the reaction.

[0037] The material after the reaction of the reaction liquid A and the reaction liquid B is input into the first return mixing pipe 11 through the output port of the reaction slot area 7, if the material needs to continue to react, the valve core of the three-way valve 10 is adjusted to be located at the lower part of the valve body, at this time, the left inlet and the right outlet of the three-way valve 10 are communicated and not communicated with the lower outlet, the material will flow into the reaction slot area 7 through the first return mixing pipe 11, the circulating pump 14, the second return mixing pipe 15 and the feeding hopper 1 in turn, circulation is formed, and the embodiment can realize large-batch and continuous production; if the material needs to be output, the valve core of the three-way valve 10 is adjusted to be located at the upper part of the valve body, at this time, the left inlet and the lower outlet of the three-way valve 10 are communicated and not communicated with the right outlet, and the material will be output from the lower outlet of the three-way valve 10.

[0038] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A feeding and back-mixing device based on a stator-rotor reactor, characterized in that: It comprises a feeding hopper (1) with a large opening facing upward and a small opening facing downward; A feeding slit (2) is provided in the side wall of the feeding hopper (1) along its circumferential direction, one or more dividing strips (16) are distributed in the feeding slit (2) along its circumferential direction, and the one or more dividing strips (16) divide the feeding slit (2) into a plurality of feeding slit sections (201), the input port of the feeding slit section (201) is provided on the outer surface of the feeding hopper (1), and the output port of the feeding slit section (201) is provided on the bottom surface of the feeding hopper (1); The output port of the feeding gap section (201) and the small port of the feeding hopper (1) can be connected to the input port of the reaction gap area (7) of the stator-rotor reactor; Also includes a circulation mechanism; The circulation mechanism comprises a primary return mixing pipe (11), a circulation pump (14) and a secondary return mixing pipe (15), wherein the output port of the primary return mixing pipe (11) is communicated with the input port of the circulation pump (14), and the output port of the circulation pump (14) is communicated with the input port of the secondary return mixing pipe (15); The input port of the first-stage back-mixing pipe (11) can be communicated with the output port of the reaction gap zone (7) of the stator-rotor reactor, and the output port of the second-stage back-mixing pipe (15) can be communicated with the large port of the feeding hopper (1).

2. A feeding and back-mixing device based on a stator-rotor reactor according to claim 1, characterized in that: It also includes a storage tank (12), and the output port of the first-level back-mixing pipe (11) is connected to the input port of the circulation pump (14) through the storage tank (12); The output port of the first-stage back-mixing pipe (11) and the input port of the circulation pump (14) are both connected to the cavity of the storage tank (12).

3. A feeding and back-mixing device based on a stator-rotor reactor according to claim 2, characterized in that: Also includes a stirring mechanism (13); The stirring mechanism (13) comprises a stirring blade (1302) and a driving motor (1301), wherein the stirring blade (1302) is mounted on the output shaft of the driving motor (1301); The stirring blade (1302) is located in the cavity of the storage tank (12), and the driving motor (1301) is installed on the storage tank (12).

4. The feeding and back-mixing device based on a stator-rotor reactor according to claim 1, characterized in that: A three-way valve (10) is installed on the first-stage back-mixing pipe (11); When the valve core of the three-way valve (10) is located at the lower part of the valve body, the left inlet of the three-way valve (10) is connected to the right outlet and is not connected to the lower outlet; when the valve core of the three-way valve (10) is located at the upper part of the valve body, the left inlet of the three-way valve (10) is connected to the lower outlet and is not connected to the right outlet; The left inlet of the three-way valve (10) is communicated with the input port of the first-stage back-mixing pipe (11), and the right outlet of the three-way valve (10) is communicated with the output port of the first-stage back-mixing pipe (11).

5. A feeding and back-mixing system based on a stator-rotor reactor, comprising a stator-rotor reactor, wherein the stator-rotor reactor comprises a high-speed motor (6), a rotor (5) and a stator (4), wherein the axis of the output shaft of the high-speed motor (6) is perpendicular to the horizontal plane, the rotor (5) is coaxially mounted on the output shaft of the high-speed motor (6), the stator (4) is mounted on the housing of the high-speed motor (6) and coaxially sleeved outside the rotor (5), a reaction gap zone (7) with an open upper end and a closed lower end is formed between the rotor (5) and the stator (4), the open end of the reaction gap zone (7) being the input port of the reaction gap zone (7), and the output port of the reaction gap zone (7) being opened on the outer surface of the stator (4), characterized in that It also includes the feeding and back-mixing device based on the stator-rotor reactor as described in any one of claims 1 to 4, wherein the output port of the feeding gap section (201) and the small port of the feeding hopper (1) in the feeding and back-mixing device based on the stator-rotor reactor are both connected to the input port of the reaction gap area (7) of the stator-rotor reactor, and the output port of the secondary back-mixing pipe (15) in the feeding and back-mixing device based on the stator-rotor reactor is connected to the large port of the feeding hopper (1).

6. A feeding and back-mixing system based on a stator-rotor reactor according to claim 5, characterized in that: A circulating water chamber (8) is provided in the stator (4); A circulating water inlet (3) and a circulating water outlet (9) communicating with the circulating water chamber (8) are provided on the top surface of the stator (4).

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