Material mixing equipment

Abstract

The embodiment of the utility model provides material mixing equipment, and belongs to the technical field of polymer mixing equipment. The material mixing equipment comprises a film forming device, the film forming device comprises a first material cavity and a second material cavity, the bottom ends of the two material cavities are open, the second material cavity wraps the first material cavity, and the inner wall of the bottom end of the second material cavity and the outer wall of the bottom end of the first material cavity form a second annular discharge port of the second material cavity; the distribution plate is located below the film forming device, the distribution plate comprises a bottom plate part and a cone part located on the bottom plate part, the peripheral wall of the cone part and the inner wall of the bottom end of the first material cavity form a first annular discharging port of the first material cavity, the first annular discharging port and the second annular discharging port are coaxial, and a discharging port is formed in the bottom plate part; and the mixing tank is used for receiving the mixture discharged from the discharging opening in the distribution plate. Through the material mixing equipment, the mixing efficiency of raw materials and recycled materials in the nylon 6 polymerization process can be improved, the energy consumption is reduced, and the product quality is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polymer mixing equipment, in particular to a material mixing equipment. Background Art

[0002] In the production process of nylon 6, the effective mixing of raw materials and recycled materials is crucial to ensure the uniformity and quality of the final product. Traditional mixing technology often fails to achieve the ideal mixing effect and has problems such as high energy consumption and uneven mixing. Utility Model Content

[0003] In view of the above problems existing in the prior art, the purpose of the embodiment of the utility model is to provide a material mixing device. The material mixing device can improve the mixing efficiency of raw materials and recycled materials in the nylon 6 polymerization process, reduce energy consumption, and improve product quality.

[0004] The technical solution adopted in the embodiment of the utility model is:

[0005] A material mixing device, comprising:

[0006] A film former, comprising a first material chamber and a second material chamber, wherein the bottom ends of the first material chamber and the second material chamber are both open, the second material chamber wraps the first material chamber, and the inner wall of the bottom end of the second material chamber and the outer wall of the bottom end of the first material chamber form a second annular discharge port of the second material chamber;

[0007] A distribution plate is located below the film former, the distribution plate includes a bottom plate portion and a cone portion located on the bottom plate portion, the outer peripheral wall of the cone portion and the inner wall of the bottom end of the first material cavity form a first annular discharge port of the first material cavity, the first annular discharge port and the second annular discharge port are coaxial, the materials discharged from the first annular discharge port and the second annular discharge port can flow to the cone portion respectively for mixing, and a discharge port is provided on the bottom plate portion;

[0008] The mixing tank is used to receive the mixed material discharged from the discharge port on the distribution plate.

[0009] Furthermore, the first material cavity is a vertically arranged truncated cone cavity, and the inner diameter of the top cavity opening of the first material cavity is smaller than the inner diameter of the bottom cavity opening.

[0010] Furthermore, a second material inlet channel connected to the second material chamber is provided on the side of the film former, and the angle between the axis of the second material inlet channel and the axis of the first material chamber is an obtuse angle.

[0011] Furthermore, a horizontal distance between an inner wall of the second material cavity and an outer wall of the first material cavity increases gradually upward in the vertical direction.

[0012] Furthermore, a first material inlet channel connected to the first material chamber is provided on the top of the film former, and the axis of the first material inlet channel is coaxial with the axis of the first material chamber.

[0013] Furthermore, there are multiple feed openings on the bottom plate portion, and the multiple feed openings are arranged at intervals around the cone portion.

[0014] Furthermore, the mixing tank is provided with a pressure detector and a temperature detector; the pressure detector is used to detect the pressure in the mixing tank, and the temperature detector is used to detect the temperature in the mixing tank.

[0015] Furthermore, the outside of the film former and the outside of the mixing tank are both provided with a biphenyl heating jacket.

[0016] Further,

[0017] The second annular discharge port is located above the first annular discharge port.

[0018] Furthermore, the bottom of the film former and the top of the mixing tank are sealed by a sealing gasket, and the vertical distance between the outer edge of the bottom end of the first material chamber and the outer peripheral wall of the cone portion can be adjusted by adjusting the thickness of the sealing gasket.

[0019] Compared with the prior art, the beneficial effects of the embodiments of the present invention are:

[0020] In the material mixing device of the utility model, two materials for mixing can be placed into two material chambers respectively, the annular discharge ports of the two material chambers are coaxial, and the materials flowing out of the two material chambers can fall on the conical part of the distribution plate in a film shape for mixing, and flow into the mixing tank through the discharge port on the distribution plate. The material mixing device can improve the mixing efficiency of raw materials and recycled materials in the nylon 6 polymerization process, reduce energy consumption, and improve product quality.

[0021] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not intended to restrict the present invention.

[0022] The overview of various implementations or examples of the technology described in this utility model is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar components in different views. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the utility model. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts.

[0024] Figure 1 This is a schematic diagram of the structure of the material mixing equipment of the embodiment of the utility model;

[0025] Figure 2 for Figure 1 The structural diagram of part I;

[0026] Figure 3 It is a structural schematic diagram of the distribution plate of the utility model.

[0027] In the figure: 1. Film former; 11. First material chamber; 12. Second material chamber; 13. Second material inlet channel; 14. First material inlet channel; 15. Second annular discharge port; 16. First annular discharge port; 17. Biphenyl steam inlet of film former; 18. Biphenyl steam outlet of film former; 19. Biphenyl heating chamber of film former; 2. Mixing tank; 22. Pressure detector; 23. Temperature detector; 24. Biphenyl steam inlet of mixing tank; 25. First biphenyl steam outlet of mixing tank; 26. Second biphenyl steam outlet of mixing tank; 27. Biphenyl heating chamber of mixing tank; 3. Distribution plate; 31. Bottom plate; 32. Cone; 33. Feed outlet; 4. Sealing gasket. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits the detailed description of known functions and known components.

[0030] The embodiment of the utility model provides a material mixing device, which can be used for mixing raw materials and recycled materials in the production process of nylon 6. Of course, it is not limited to the mixing of the above two materials, and can also be used for mixing other two liquid materials in the industrial production process. This embodiment only takes the mixing of raw materials and recycled materials in the production process of nylon 6 as an example for explanation.

[0031] like Figure 1 and Figure 2 As shown, the material mixing equipment of the embodiment of the utility model mainly includes three parts: a film former 1, a distribution plate 3 and a mixing tank 2.

[0032] The film former 1 comprises a first material chamber 11 and a second material chamber 12. The first material chamber 11 can be used to hold recycled materials in the production process of nylon 6, wherein the recycled materials mainly include caprolactam monomers, cyclic dimers, cyclic trimers, cyclic tetramers and other polymers. The second material chamber 12 can be used to hold caprolactam raw materials in the production process of nylon 6.

[0033] The bottom ends of the first material chamber 11 and the second material chamber 12 are both open, and the second material chamber 12 wraps the first material chamber 11. The inner wall of the bottom end of the second material chamber 12 and the outer wall of the bottom end of the first material chamber 11 form a second annular discharge port 15 of the second material chamber 12. That is, the caprolactam raw material contained in the second material chamber 12 can be discharged through the second annular discharge port 15.

[0034] The distribution plate 3 is located below the film forming device 1, and the distribution plate 3 includes a bottom plate portion 31 and a cone portion 32 located on the bottom plate portion 31. Figure 3As shown, the cone portion 32 extends into the first material cavity 11 and forms a first annular discharge port 16 of the first material cavity 11 with the inner wall of the bottom end of the first material cavity 11. That is, the recycled material contained in the first material cavity 11 can be discharged through the first annular discharge port 16.

[0035] The first annular discharge port 16 of the first material chamber 11 and the second annular discharge port 15 of the second material chamber 12 are coaxial, and a discharge port 33 is provided on the bottom plate portion 31 of the distribution plate 3. The recycled material flowing out of the first material chamber 11 and the caprolactam raw material flowing out of the second material chamber 12 can flow in a film-like manner along the cone portion 32 and mix, and then flow out through the discharge port 33 on the bottom plate portion 31.

[0036] The mixing tank 2 is used to receive the mixed material discharged through the discharge port 33 on the distribution plate 3. The mixed material includes raw materials and recycled materials.

[0037] In the material mixing device of the utility model, the recycled material and the caprolactam raw material in the nylon 6 production process can be placed in two material chambers respectively, the annular discharge ports of the two material chambers are coaxial, and the materials flowing out of the two material chambers can fall on the cone portion 32 of the distribution plate 3 in a film shape for mixing, and flow into the mixing tank 2 through the discharge port 33 on the distribution plate 3. The material mixing device can improve the mixing efficiency of the raw materials and recycled materials in the nylon 6 polymerization process, reduce energy consumption, and improve product quality.

[0038] like Figure 1 As shown, in some embodiments, the first material chamber 11 on the film former 1 is a vertically arranged truncated cone chamber, which is placed in the positive direction, that is, the inner diameter of the top cavity opening of the first material chamber 11 is smaller than the inner diameter of the bottom cavity opening, and the whole is in the shape of a trumpet. The conical portion 32 of the distribution plate 3 and the inner wall of the bottom cavity opening of the first material chamber 11 form a first annular discharge port 16. This structure can promote the fluidity of the recycled material in the first material chamber 11.

[0039] The vertical distance A between the outer periphery of the first annular discharge port 16 and the tapered portion of the distribution plate 3 is between 2 mm and 6 mm, and the gap C of the first annular discharge port 16 is also between 2 mm and 6 mm, thereby promoting better mixing and circulation.

[0040] like Figure 1 As shown, in some embodiments, the second annular discharge port 15 is located above the first annular discharge port 16, and the second annular discharge port 15 may be opposite to the bottom outer wall of the first material chamber 11. That is, the raw material flowing out of the second annular discharge port 15 may flow to the cone portion 32 on the distribution plate 3 via the outer wall of the first material chamber 11. The outer wall of the first material chamber 11 may decelerate and guide the material flowing out of the second annular discharge port 15, so that it flows smoothly to the distribution plate 3.

[0041] The recycled material discharged from the first annular discharge port 16 may flow in a film-like manner along the cone portion 32 , and then be mixed with the raw material flowing out from the second annular discharge port 15 .

[0042] The gap B of the second annular discharge port 15 is 1 mm-5 mm, preferably about 2 mm. This distance is convenient for the fluidity and dispersibility of the polymer, and the specific size can be determined according to the capacity.

[0043] In some embodiments, the horizontal distance between the inner wall of the second material chamber 12 and the outer wall of the first material chamber 11 increases gradually in the vertical direction upward, and this structure facilitates the outflow of the caprolactam raw material in the first material chamber 11 .

[0044] like Figure 1 As shown, in some embodiments, a second material inlet channel 13 connected to the second material chamber 12 is provided on the side of the film former 1 .

[0045] The second material inlet channel 13 is mainly connected to the upper part of the second material chamber 12, and the angle between the axis of the second material inlet channel 13 and the axis of the first material chamber 11 is an obtuse angle, so as to improve the efficiency of adding and mixing raw materials.

[0046] Preferably, the angle D between the axis of the second material inlet channel 13 and the axis of the first material chamber 11 is 100°.

[0047] In some embodiments, a first material inlet channel 14 connected to the first material chamber 11 is provided at the top of the film former 1, and the axis of the first material inlet channel 14 is coaxial with the axis of the first material chamber 11. The first material inlet channel 14 is connected to the top cavity opening of the first material chamber.

[0048] like Figure 1 As shown, in some embodiments, the mixing tank 2 is located below the film former 1 , and the film former 1 can be fixed on the mixing tank 2 .

[0049] A connecting hole (not shown) is provided on the top of the mixing tank 2, and the bottom ends of the first material chamber 11 and the second material chamber 12 on the film former 1 can respectively pass through the connecting holes on the top of the mixing tank 2 and extend into the interior thereof.

[0050] The distribution plate 3 can be arranged in the mixing tank 2, fixed above the inside of the mixing tank 2, and located below the bottom ends of the two material chambers. The outer peripheral edge of the bottom plate portion 31 of the distribution plate 3 is fixed on the inner peripheral wall of the mixing tank 2. The recycled material flowing out of the first material chamber 11 and the caprolactam raw material flowing out of the second material chamber 12 are directly mixed on the distribution plate 3 and then flow to the bottom of the mixing tank 2.

[0051] In some embodiments, the bottom plate portion 31 of the distribution plate 3 is circular, and has multiple discharge ports 33 thereon. The multiple discharge ports 33 are spaced apart around the cone portion 32 to ensure that the mixed material of the distribution plate 3 can flow evenly into the bottom of the mixing tank 2 .

[0052] In some embodiments, the cone portion 32 on the distribution plate 3 is in the shape of a cone.

[0053] like Figure 1 As shown, the bottom of the film former 1 and the top of the mixing tank 2 are connected without a neck, and the distance between the two is shortened as much as possible to reduce equipment manufacturing errors and improve mixing efficiency.

[0054] In some embodiments, a sealing ring 4 is used to seal the bottom of the film former 1 and the top of the mixing tank 2. The gap between the bottom of the film former 1 and the top of the mixing tank 2 can be adjusted by adjusting the thickness of the sealing ring 4, thereby adjusting the vertical distance A between the outer edge of the bottom end of the first material chamber 11 and the outer peripheral wall of the cone portion 32.

[0055] In some embodiments, the mixing tank 2 is provided with a pressure detector 22 and a temperature detector 23. The pressure detector 22 is used to detect the pressure in the mixing tank 2, and the temperature detector 23 is used to detect the temperature in the mixing tank 2.

[0056] Of course, other detectors for detecting internal parameters may also be provided on the mixing tank 2, so as to comprehensively monitor and control the conditions of the mixing process in the mixing tank 2, thereby ensuring the uniformity and stability of the mixing.

[0057] In some embodiments, the pressure detector 22 and the temperature detector 23 on the mixing tank 2 can be interlocked with the control valve on the first material inlet channel 14 and the control valve on the second material inlet channel 13 to prevent material backflow due to blockage.

[0058] In some embodiments, the bottom of the mixing tank 2 is designed to be funnel-shaped, and the angle E between the funnel portion and the main body portion at the bottom of the mixing tank 2 is preferably 150°.

[0059] In some embodiments, the outside of the film former 1 and the outside of the mixing tank 2 are both provided with a biphenyl heating jacket, which can ensure that the system operates at an optimal temperature, thereby improving the efficiency of the polymerization reaction and the quality of the product.

[0060] Specifically, Figure 1 As shown, the outside of the film former 1 is provided with a film former biphenyl heating chamber 19 and a film former biphenyl steam inlet 17 and a film former biphenyl steam outlet 18 which are respectively connected to the film former biphenyl heating chamber 19 .

[0061] The outside of the mixing tank 2 is provided with a mixing tank biphenyl heating chamber 27 and a mixing tank biphenyl steam inlet 24, a mixing tank biphenyl first steam outlet 25 and a mixing tank biphenyl second steam outlet 26 which are respectively connected to the mixing tank biphenyl heating chamber 27.

[0062] The above description is intended to be illustrative rather than restrictive, and those skilled in the art may make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure. Moreover, the above examples (or one or more of them) may be used in combination with each other, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations.

Claims

1. A material mixing device, characterized in that: include: A film former, comprising a first material chamber and a second material chamber, wherein the bottom ends of the first material chamber and the second material chamber are both open, the second material chamber wraps the first material chamber, and the inner wall of the bottom end of the second material chamber and the outer wall of the bottom end of the first material chamber form a second annular discharge port of the second material chamber; A distribution plate is located below the film former, the distribution plate includes a bottom plate portion and a cone portion located on the bottom plate portion, the outer peripheral wall of the cone portion and the inner wall of the bottom end of the first material cavity form a first annular discharge port of the first material cavity, the first annular discharge port and the second annular discharge port are coaxial, the materials discharged from the first annular discharge port and the second annular discharge port can flow to the cone portion respectively for mixing, and a discharge port is provided on the bottom plate portion; The mixing tank is used to receive the mixed material discharged from the discharge port on the distribution plate.

2. A material mixing device as claimed in claim 1, characterized in that: The first material cavity is a vertically arranged truncated cone cavity, and the inner diameter of the top cavity opening of the first material cavity is smaller than the inner diameter of the bottom cavity opening.

3. A material mixing device as claimed in claim 2, characterized in that: A second material inlet channel connected to the second material chamber is provided on the side of the film former, and the angle between the axis of the second material inlet channel and the axis of the first material chamber is an obtuse angle.

4. A material mixing device as claimed in claim 2, characterized in that: The horizontal distance between the inner wall of the second material cavity and the outer wall of the first material cavity increases gradually upward in the vertical direction.

5. A material mixing device as claimed in claim 2, characterized in that: A first material inlet channel connected to the first material cavity is provided on the top of the film former, and the axis of the first material inlet channel is coaxial with the axis of the first material cavity.

6. A material mixing device as claimed in claim 1, characterized in that: There are multiple material discharge openings on the bottom plate portion, and the multiple material discharge openings are arranged at intervals around the cone portion.

7. A material mixing device as claimed in claim 1, characterized in that: The mixing tank is provided with a pressure detector and a temperature detector; the pressure detector is used to detect the pressure in the mixing tank, and the temperature detector is used to detect the temperature in the mixing tank.

8. A material mixing device as claimed in claim 1, characterized in that: The outside of the film former and the outside of the mixing tank are both provided with biphenyl heating jackets.

9. A material mixing device as claimed in claim 1, characterized in that: The second annular discharge port is located above the first annular discharge port.

10. A material mixing device according to claim 1, characterized in that: The bottom of the film former and the top of the mixing tank are sealed by a sealing gasket, and the vertical distance between the outer edge of the bottom end of the first material chamber and the outer peripheral wall of the cone portion can be adjusted by adjusting the thickness of the sealing gasket.

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