Material mixing device
By designing the expansion and shrinking mixing section in the powder material mixing device, combining multi-stage flow diversion and deflux components, the problems of short mixing time and insufficient mixing in the prior art are solved, and the full mixing of powder material is achieved and the Semi-revolution prevention, and the device design is simple and efficient.
Patent Information
- Application Number
- CN202420886046.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-04-26
AI Technical Summary
The existing static mixers have a single form in changing the flow direction and speed of powder materials, and the mixing time is short, resulting in poor mixing effect of powder materials and prone to segregation.
A material mixing device is designed, including an expansion mixing section and a shrink mixing section. By changing the flow rate and direction of the powder material, increasing the mixing time and mutual collision and shear between particles, using multi-stage flow diversion and deflux assembly To improve mixing effect.
The powder material is fully mixed to prevent segregation. At the same time, the device has no moving parts, which occupies a small space and is low in cost.
Smart Images
Figure CN222196554U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipeline powder material mixing, in particular to a material mixing device. Background Art
[0002] Pipeline powder material mixers are widely used in chemical, pharmaceutical, food, new materials, new energy, metallurgy and other industries. They are special mixers suitable for mixing premixed powder materials or two or more materials that enter the pipeline powder material mixer in a uniform proportion. Of course, the pipeline powder material mixer can also be installed at the end of the powder material conveying pipeline to eliminate the material segregation caused by long-distance transportation. Pipeline powder material mixers include static mixers, dynamic mixers, rotary mixers, etc. Usually. Pipeline powder material mixers achieve mixing by changing the flow direction and speed of powder materials, especially static mixers.
[0003] However, the static mixer in the prior art has a single form in changing the flow direction and speed of the powder material, a short mixing time, and insufficient mixing, which results in a poor mixing effect of the powder material and easily leads to segregation.
[0004] Therefore, it is urgent to propose a material mixing device to solve the above problems. Utility Model Content
[0005] The utility model provides a material mixing device, which can make the powder material mixing in various forms, with a long mixing time and sufficient mixing, and has a good mixing effect of the powder material, thereby preventing the powder material from segregating.
[0006] To achieve this purpose, the utility model adopts the following technical solutions:
[0007] A material mixing device, comprising:
[0008] The expansion mixing section comprises a first shell and a first guide body, wherein the first shell is sleeved outside the first guide body, an inner wall of the first shell and an outer wall of the first guide body form an expansion cavity, the cross-sectional area of the expansion cavity increases along a first direction, and a first guide component and a baffle component are sequentially arranged on the outer wall of the first guide body along the first direction;
[0009] The contraction mixing section comprises a second shell and a second flow guide, wherein the second shell is sleeved outside the second flow guide, the inner wall of the second shell and the outer wall of the second flow guide form a contraction cavity, the cross-sectional area of the contraction cavity decreases along the first direction, the first shell and the second shell are sequentially connected along the first direction, the first flow guide and the second flow guide are sequentially connected along the first direction, and are fixedly connected to the first shell and the second shell respectively, and a second flow guide component is provided at the end of the outer wall of the second flow guide along the first direction.
[0010] As an optional technical solution of the material mixing device, the first shell and the first flow guide body are both in the shape of a cone with a radial dimension increasing along the first direction; and / or,
[0011] The second housing and the second flow guide body are both in a conical shape with a radial dimension decreasing along the first direction.
[0012] As an optional technical solution of the material mixing device, the first flow guide component includes a plurality of first flow guide blades, and the plurality of first flow guide blades are evenly arranged along the circumference of the outer wall of the first flow guide body; and / or,
[0013] The deflector assembly includes multiple stages, and the multiple stages of the deflector assemblies are arranged at intervals along the first direction.
[0014] As an optional technical solution for the material mixing device, each level of the deflector assembly includes a plurality of deflector blades, and the plurality of deflector blades are evenly arranged along the circumference of the outer wall of the first guide body, and the number of the deflector blades of each level of the deflector assembly increases along the first direction.
[0015] As an optional technical solution of the material mixing device, the second flow guide component includes a plurality of second flow guide blades, and the plurality of second flow guide blades are evenly arranged along the circumference of the outer wall of the second flow guide body.
[0016] As an optional technical solution of the material mixing device, the material mixing device also includes an initial mixing section, which includes a first cylinder and a first mixing assembly located in the first cylinder, and the first cylinder, the first shell and the second shell are connected in sequence along the first direction.
[0017] As an optional technical solution of the material mixing device, the first mixing component includes a plurality of first spiral blades connected to each other, and the angle between each of the first spiral blades and the central axis of the first cylinder is greater than 45°.
[0018] As an optional technical solution for the material mixing device, the surface shape of each of the first spiral blades is triangular, so that the surface size of the first spiral blade increases from the central axis position of the first cylinder toward the inner wall of the first cylinder.
[0019] As an optional technical solution of the material mixing device, the material mixing device also includes an end mixing section, which includes a second cylinder and a second mixing assembly located in the second cylinder, the second outer shell and the second cylinder are connected in sequence along the first direction, and the diversion direction of the second mixing assembly is opposite to the diversion direction of the second diversion assembly.
[0020] As an optional technical solution of the material mixing device, the second mixing assembly includes a plurality of second spiral blades connected to each other, and the angle between each of the second spiral blades and the central axis of the second cylinder is greater than 40°.
[0021] Beneficial effects of the utility model: The material mixing device provided by the utility model includes an expansion mixing section and a contraction mixing section. The expansion mixing section includes a first outer shell and a first guide body, the first outer shell is sleeved outside the first guide body, the inner wall of the first outer shell and the outer wall of the first guide body form an expansion cavity, the cross-sectional area of the expansion cavity increases along the first direction, so that the powder material entering the expansion cavity gradually enters the space with a larger volume, and the powder material can enter the expansion cavity along the first guide body, increasing the retention time of the powder material in the expansion cavity, thereby increasing the mutual collision, shearing, and mixing between the powder material particles, improving the mixing effect of the powder material, and preventing the powder material from segregating. The outer wall of the first guide body is provided with a first guide component and a deflection component, the first guide component can turn to guide the powder material into the expansion mixing section, and the deflection component can change the flow direction of the powder material in the expansion cavity. Through the diversion and deflection, the mutual collision, shearing, and mixing between the powder material particles are further increased, the mixing effect of the powder material is further improved, and the powder material is prevented from segregating. The contraction mixing section includes a second shell and a second guide body, the second shell is sleeved outside the second guide body, the inner wall of the second shell and the outer wall of the second guide body form a contraction cavity, the cross-sectional area of the contraction cavity decreases along the first direction, the powder material enters the contraction cavity from the expansion cavity, the volume cavity becomes larger, and the powder material can be fully mixed. Moreover, the powder material entering the contraction cavity gradually enters the space with a smaller volume, and the powder material can enter the contraction cavity along the second guide body, gradually increasing the flow rate of the powder material. The first shell and the second shell are sequentially connected along the first direction, the first guide body and the second guide body are sequentially connected along the first direction, and are respectively fixedly connected to the first shell and the second shell, so that the expansion mixing section and the contraction mixing section are connected in series, which can gradually reduce the flow rate of the powder material from the expansion cavity to the contraction cavity and then gradually increase it, gradually changing the flow rate and direction of the powder material twice, increasing the mutual collision, shearing and mixing between the powder material particles, further improving the mixing effect of the powder material, and preventing the segregation of the powder material. A second guide component is provided at the end of the outer wall of the second guide body to guide the powder material to flow out of the contraction cavity.
[0022] In summary, the material mixing device changes the flow rate and direction of the powder material in various forms, so that the powder material mixing forms are diversified, the mixing time is increased to make the mixing sufficient, the mixing effect of the powder material is improved, and the segregation of the powder material is prevented. In addition, the material mixing device has no moving parts, occupies a small space, and has low cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.
[0024] Figure 1 It is a cross-sectional view of a material mixing device provided by an embodiment of the utility model;
[0025] Figure 2 It is an exploded view of an expansion mixing section and a contraction mixing section in a material mixing device provided in an embodiment of the utility model;
[0026] Figure 3 It is an assembly diagram of a first flow guide and a second flow guide in a material mixing device provided in an embodiment of the utility model;
[0027] Figure 4 It is a cross-sectional view of the initial mixing section in the material mixing device provided in the embodiment of the utility model;
[0028] Figure 5 It is a cross-sectional view of the terminal mixing section in the material mixing device provided in the embodiment of the utility model.
[0029] In the figure: 100, expansion mixing section; 110, first outer shell; 120, first guide body; 130, first guide assembly; 131, first guide blade; 140, deflection assembly; 141, deflection blade; 101, expansion chamber; 200, contraction mixing section; 210, second outer shell; 220, second guide body; 230, second guide assembly; 231, second guide blade; 201, contraction chamber; 300, initial mixing section; 310, first cylinder; 320, first mixing assembly; 321, first spiral blade; 400, terminal mixing section; 410, second cylinder; 420, second mixing assembly; 421, second spiral blade. DETAILED DESCRIPTION
[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.
[0031] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0032] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0033] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.
[0034] The utility model provides a material mixing device, which can make the powder material mixing in various forms, with a long mixing time and sufficient mixing, and has a good mixing effect of the powder material, thereby preventing the powder material from segregating.
[0035] Specific as Figure 1As shown, the material mixing device includes an expansion mixing section 100 and a contraction mixing section 200. The expansion mixing section 100 includes a first shell 110 and a first guide body 120. The first shell 110 is sleeved outside the first guide body 120. The inner wall of the first shell 110 and the outer wall of the first guide body 120 form an expansion cavity 101. The cross-sectional area of the expansion cavity 101 increases along the first direction, so that the powder material entering the expansion cavity 101 gradually enters the space with a larger volume, and the powder material can enter the expansion cavity 101 along the first guide body 120, gradually reducing the flow rate of the powder material, increasing the retention time of the powder material in the expansion cavity 101, and then increasing the mutual collision, shearing and mixing between the powder material particles, improving the mixing effect of the powder material, and preventing the segregation of the powder material. The outer wall of the first guide body 120 is sequentially provided with a first guide component 130 and a baffle component 140 along the first direction. The first flow guide component 130 can turn to guide the powder material into the expansion mixing section 100, and the deflection component 140 can change the flow direction of the powder material in the expansion chamber 101. Through the flow guide and deflection, the mutual collision, shearing and mixing between the powder material particles are further increased, the mixing effect of the powder material is further improved, and the segregation of the powder material is prevented. The contraction mixing section 200 includes a second shell 210 and a second flow guide 220. The second shell 210 is sleeved outside the second flow guide 220. The inner wall of the second shell 210 and the outer wall of the second flow guide 220 form a contraction chamber 201. The cross-sectional area of the contraction chamber 201 decreases along the first direction. The powder material enters the contraction chamber 201 from the expansion chamber 101, and the volume becomes larger, so that the powder material can be fully mixed. Moreover, the powder material entering the contraction chamber 201 gradually enters the space with a smaller volume, and the powder material can enter the contraction chamber 201 along the second flow guide 220, gradually increasing the flow rate of the powder material. The first shell 110 and the second shell 210 are sequentially connected along the first direction, and the first guide body 120 and the second guide body 220 are sequentially connected along the first direction and fixedly connected to the first shell 110 and the second shell 210 respectively, so that the expansion mixing section 100 and the contraction mixing section 200 are connected in series, which can gradually reduce the flow rate of the powder material from the expansion chamber 101 to the contraction chamber 201 and then gradually increase it, gradually changing the flow rate and direction of the powder material twice, increasing the mutual collision, shearing and mixing between the powder material particles, further improving the mixing effect of the powder material, and preventing the powder material from segregating. A second guide assembly 230 is provided at the end of the outer wall of the second guide body 220 along the first direction to guide the powder material to flow out of the contraction chamber 201.
[0036] The material mixing device changes the flow rate and direction of the powder material in various forms, so that the powder material mixing forms are diversified, the mixing time is increased to make the mixing sufficient, the mixing effect of the powder material is improved, and the segregation of the powder material is prevented. In addition, the material mixing device has no moving parts, occupies a small space, and has low cost.
[0037] It is worth noting that the first direction is the direction of the central axis of the first flow guide 120 or the second flow guide 220 (hereinafter referred to as the axis direction).
[0038] Further, in some embodiments, the outer shapes of the first shell 110 and the first flow guide 120 are both conical with radial dimensions increasing along the first direction; the outer shapes of the second shell 210 and the second flow guide 220 are other shapes. In some other embodiments, the outer shapes of the second shell 210 and the second flow guide 220 are both conical with radial dimensions decreasing along the first direction; the outer shapes of the first shell 110 and the first flow guide 120 are other shapes. In some other embodiments, the outer shapes of the first shell 110 and the first flow guide 120 are both conical with radial dimensions increasing along the first direction; the outer shapes of the second shell 210 and the second flow guide 220 are both conical with radial dimensions decreasing along the first direction.
[0039] Of course, the shapes of the first shell 110 and the first flow guide 120 may also be different, as long as the cross-sectional area of the expansion cavity 101 can be increased along the first direction.
[0040] Similarly, the shapes of the second shell 210 and the second body guide 220 may be different, as long as the cross-sectional area of the shrinkage cavity 201 can be reduced along the first direction.
[0041] like Figure 2 As shown, the first shell 110 has an expansion inlet flange and an expansion outlet flange at its inlet and outlet along the first direction, and the second shell 210 has a contraction inlet flange and a contraction outlet flange at its inlet and outlet along the first direction. The first shell 110 and the second shell 210 are connected via the expansion outlet flange and the contraction inlet flange.
[0042] like Figure 3 As shown, a cone fixing flange is provided at the connection between the first flow guide 120 and the second flow guide 220, and the expansion outlet flange, the cone fixing flange and the contraction inlet flange are sequentially connected along the first direction.
[0043] In this embodiment, the expansion inlet flange and the contraction outlet flange are of the same model, and the expansion outlet flange, the cone fixing flange and the contraction inlet flange are of the same model.
[0044] Continue to see Figure 1 , Figure 2 and Figure 3In a preferred technical solution, the first guide assembly 130 includes a plurality of first guide blades 131, which are evenly arranged along the circumference of the outer wall of the first guide body 120, and the powder material entering the expansion cavity 101 is introduced into multiple streams, so that the powder material is evenly mixed at the corners. In addition, the first guide blades 131 are easy to process and have low cost. At the same time, the baffle assembly 140 includes multiple stages, and the multi-stage baffle assembly 140 is arranged at intervals along the first direction, which can change the direction of the powder material in the expansion cavity 101 multiple times to make the mixing more uniform.
[0045] In some other embodiments, the first guide assembly 130 includes a plurality of first guide blades 131 , and the plurality of first guide blades 131 are evenly arranged along the circumference of the outer wall of the first guide body 120 ; meanwhile, there is only one primary deflector assembly 140 .
[0046] In some other embodiments, the deflector assembly 140 includes multiple stages, and the multiple stages of deflector assemblies 140 are evenly spaced apart along the first direction; meanwhile, the first flow guide assembly 130 is arranged in other structures.
[0047] Furthermore, each level of the deflector assembly 140 includes a plurality of deflector blades 141, which are evenly arranged along the circumference of the outer wall of the first guide body 120, which can not only change the direction of the powder material, but also divide the powder material in the expansion chamber 101 into multiple strands, so that the powder material is evenly mixed. The number of deflector blades 141 of each level of the deflector assembly 140 increases along the first direction, so that the number of strands of the powder material in the expansion chamber 101 divided along the first direction gradually increases, thereby improving the mixing effect of the powder material. Of course, the number of deflector blades 141 at each level is greater than the number of the first guide blades 131.
[0048] In this embodiment, the first guide assembly 130 includes four first guide blades 131. The deflector assembly 140 is provided with two stages, the first stage deflector assembly 140 includes eight deflector blades 141, and the second stage deflector assembly 140 includes sixteen deflector blades 141. The powder material in the expansion chamber 101 is divided into four strands by the four first guide blades 131, then divided into eight strands by the eight deflector blades 141, and then divided into sixteen strands by the sixteen deflector blades 141. After three stages of guide or deflection mixing, the powder material in each strand can be mixed more and more evenly.
[0049] Furthermore, in order to increase the deflection effect on the powder material, the deflection angle of the deflection blade 141 is less than 135°. For example, the deflection angle may be 130°, 120°, 110°, 100°, etc.
[0050] In this embodiment, the deflector blade 141 is a bent blade laterally connected to the outer wall of the first flow guide 120 , and the outer angles of the two bent edges of the bent blade are less than 135 degrees.
[0051] The second flow guide assembly 230 includes a plurality of second flow guide blades 231, which are evenly arranged along the circumference of the outer wall of the second flow guide body 220. The powder material mixed in the contraction cavity 201 is divided into multiple streams and discharged, and the powder material is evenly mixed at the corner. In addition, the second flow guide blades 231 are easy to process and have low cost.
[0052] like Figure 1 and Figure 4 As shown, the material mixing device also includes an initial mixing section 300, which includes a first cylinder 310 and a first mixing assembly 320 located in the first cylinder 310. The first cylinder 310, the first shell 110 and the second shell 210 are sequentially connected along a first direction to mix the powder material coming out of the pipeline in the first cylinder 310 to prevent segregation of the powder material transported in the straight pipeline.
[0053] Furthermore, in order to improve the mixing uniformity of the powder material, the first mixing assembly 320 includes a plurality of first spiral blades 321 connected to each other, and each first spiral blade 321 has an angle greater than 45° with the central axis of the first cylinder 310, so that the powder material is mixed in a spiral flow in the first cylinder 310, and the mixing is uniform and the guided flow is smooth. Exemplarily, the angle between each first spiral blade 321 and the central axis of the first cylinder 310 is 50°, 60°, 70°, 80°, etc.
[0054] Furthermore, the surface shape of each first spiral blade 321 is triangular, so that the surface size of the first spiral blade 321 increases from the central axis position of the first cylinder 310 toward the inner wall of the first cylinder 310, thereby minimizing the increase in pipeline resistance caused by the first spiral blade 321.
[0055] In this embodiment, the first mixing assembly 320 includes four first spiral blades 321 . The four first spiral blades 321 are perpendicular to each other and symmetrically distributed in the first cylinder 310 .
[0056] like Figure 1 and Figure 5 As shown, the material mixing device also includes an end mixing section 400, which includes a second cylinder 410 and a second mixing component 420 located in the second cylinder 410. The second shell 210 and the second cylinder 410 are connected in sequence along a first direction. The diversion direction of the second mixing component 420 is opposite to the diversion direction of the second diversion component 230, and the powder material coming out of the contraction mixing section 200 is guided and mixed again.
[0057] Further, the second mixing assembly 420 includes a plurality of second spiral blades 421 connected to each other, and each second spiral blade 421 has an angle greater than 40° with the central axis of the second cylinder 410, so that the powder material is spirally flowed and mixed in the second cylinder 410, and mixed evenly. Exemplarily, the angle between each second spiral blade 421 and the central axis of the second cylinder 410 is 45°, 50°, 55°, 60°, 65°, etc.
[0058] Furthermore, the surface shape of each second spiral blade 421 is triangular, so that the surface size of the second spiral blade 421 increases from the central axis position of the second cylinder 410 toward the inner wall of the second cylinder 410, thereby minimizing the increase in pipeline resistance caused by the second spiral blade 421.
[0059] In this embodiment, the second mixing assembly 420 includes four second spiral blades 421 , and the four second spiral blades 421 are arranged perpendicular to each other.
[0060] It should be noted that the angle between the second spiral blade 421 and the central axis of the second cylinder 410 is smaller than the angle between the first spiral blade 321 and the central axis of the first cylinder 310 in order to adapt to the increase in the speed of the powder material in the second cylinder 410 .
[0061] In this embodiment, the length of the second spiral blade 421 is greater than the length of the first spiral blade 321, so as to provide a stable spiral advancing state for the powder material and prevent segregation from occurring during the conveying process.
[0062] In this embodiment, the inlet and outlet of the first cylinder 310 of the material mixing device along the first direction are further provided with an initial inlet flange and an initial outlet flange, and the initial outlet flange is connected to the expansion inlet flange.
[0063] The inlet and outlet of the second cylinder 410 of the material mixing device along the first direction are further provided with a terminal inlet flange and a terminal outlet flange, and the shrink outlet flange is connected to the terminal inlet flange.
[0064] In this embodiment, the initial inlet flange, the initial outlet flange, the expansion inlet flange and the contraction outlet flange are of the same model. In summary, the initial mixing section 300, the expansion mixing section 100, the contraction mixing section 200 and the terminal mixing section 400 are connected in series to increase the retention time of the powder material in the material mixing device, thereby increasing the mutual collision, shearing and mixing between the powder material particles, improving the mixing effect of the powder material, and preventing the segregation of the powder material.
[0065] As a preferred technical solution, the central axes of the initial mixing section 300, the expansion mixing section 100, the contraction mixing section 200 and the terminal mixing section 400 are on a straight line.
[0066] It should be noted that the initial mixing section 300 and the expansion mixing section 100 in the material mixing device can be used separately. For example, when the mixing uniformity of the powder material is not required to be high, the initial mixing section 300 or the expansion mixing section 100 can be used separately.
[0067] Of course, the expansion mixing section 100 and the contraction mixing section 200 in the material mixing device must be used at the same time.
[0068] The mixing process of the powder material along the first direction (i.e. the flow direction of the powder material) at each stage is as follows:
[0069] In the first step, the powder material enters the initial mixing section 300, and the four first spiral blades 321 in the first cylinder 310 rotate and mix the passing powder material;
[0070] In the second step, the powder material enters the expansion mixing section 100, and the four first guide blades 131 divide the powder material entering the expansion cavity 101 into four strands for introduction, and then pass through eight deflection blades 141 to be divided into eight strands, and then pass through sixteen deflection blades 141 to be divided into sixteen strands, and a total of three levels of diversion or deflection mixing; in the third step, the powder material enters the contraction mixing section 200, and accelerates the mixing in the contraction cavity 201, and then the multiple second guide blades 231 divide the powder material mixed in the contraction cavity 201 into multiple strands for export, and make the powder material evenly mixed at the corners;
[0071] In the fourth step, the powder material enters the terminal mixing section 400, and the powder material passed by the four second spiral blades 421 in the second cylinder 410 is rotated and mixed again and discharged.
[0072] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.
Claims
1. A material mixing device, characterized in that: include: An expansion mixing section (100) comprises a first shell (110) and a first flow guide (120), wherein the first shell (110) is sleeved outside the first flow guide (120), an inner wall of the first shell (110) and an outer wall of the first flow guide (120) form an expansion cavity (101), a cross-sectional area of the expansion cavity (101) increases along a first direction, and a first flow guide component (130) and a baffle component (140) are sequentially arranged on the outer wall of the first flow guide (120) along the first direction; The contraction mixing section (200) comprises a second shell (210) and a second flow guide (220), wherein the second shell (210) is sleeved outside the second flow guide (220), the inner wall of the second shell (210) and the outer wall of the second flow guide (220) form a contraction cavity (201), the cross-sectional area of the contraction cavity (201) decreases along the first direction, the first shell (110) and the second shell (210) are sequentially connected along the first direction, the first flow guide (120) and the second flow guide (220) are sequentially connected along the first direction, and are respectively fixedly connected to the first shell (110) and the second shell (210), and a second flow guide component (230) is provided at the end of the outer wall of the second flow guide (220) along the first direction.
2. The material mixing device according to claim 1, characterized in that: The first housing (110) and the first flow guide (120) are both tapered in shape with radial dimensions increasing along the first direction; and / or, The outer shapes of the second housing (210) and the second flow guide (220) are both conical, with radial dimensions decreasing along the first direction.
3. The material mixing device according to claim 1, characterized in that: The first flow guide component (130) comprises a plurality of first flow guide blades (131), and the plurality of first flow guide blades (131) are evenly arranged along the circumference of the outer wall of the first flow guide body (120); and / or, The deflector assembly (140) comprises a plurality of stages, and the plurality of stages of the deflector assembly (140) are arranged at intervals along the first direction.
4. The material mixing device according to claim 3, characterized in that: Each level of the deflector assembly (140) comprises a plurality of deflector blades (141), and the plurality of deflector blades (141) are evenly arranged along the circumference of the outer wall of the first guide body (120), and the number of the deflector blades (141) of each level of the deflector assembly (140) increases along the first direction.
5. The material mixing device according to claim 1, characterized in that: The second flow guide component (230) comprises a plurality of second flow guide blades (231), and the plurality of second flow guide blades (231) are evenly arranged along the circumference of the outer wall of the second flow guide body (220).
6. The material mixing device according to claim 1, characterized in that: The material mixing device further comprises an initial mixing section (300), wherein the initial mixing section (300) comprises a first cylinder (310) and a first mixing assembly (320) located in the first cylinder (310), and the first cylinder (310), the first shell (110) and the second shell (210) are sequentially connected along the first direction.
7. The material mixing device according to claim 6, characterized in that: The first mixing assembly (320) comprises a plurality of first spiral blades (321) connected to each other, and the angle between each first spiral blade (321) and the central axis of the first cylinder (310) is greater than 45°.
8. The material mixing device according to claim 7, characterized in that: The surface shape of each of the first spiral blades (321) is triangular, so that the surface size of the first spiral blade (321) increases from the central axis position of the first cylinder (310) towards the inner wall of the first cylinder (310).
9. The material mixing device according to claim 1, characterized in that: The material mixing device further comprises an end mixing section (400), wherein the end mixing section (400) comprises a second cylinder (410) and a second mixing assembly (420) located in the second cylinder (410), the second shell (210) and the second cylinder (410) are sequentially connected along the first direction, and the flow guiding direction of the second mixing assembly (420) is opposite to the flow guiding direction of the second flow guiding assembly (230).
10. The material mixing device according to claim 9, characterized in that: The second mixing assembly (420) comprises a plurality of second spiral blades (421) connected to each other, and the angle between each second spiral blade (421) and the central axis of the second cylinder (410) is greater than 40°.