Double-mixing extruder

Abstract

The utility model provides a double material mixing extruder, including main material mixing mechanism, pigment feeding mechanism, broken material conveying mechanism, coulter blender mixer, extruder first weighing mechanism and second weighing mechanism, the first weighing mechanism is provided with first feed inlet and second feed inlet, the first feed inlet is connected with the main material mixing mechanism, the second feed inlet is connected with the coulter blender mixer, and the second feed inlet is connected with the main material mixing mechanism. The first weighing mechanism is connected with the first feeding port, the second feeding port is connected with the crushed material conveying mechanism, the second weighing mechanism is connected with the pigment feeding mechanism, the coulter mixer is provided with a third feeding port and a fourth feeding port, the third feeding port is connected with a discharging port of the first weighing mechanism, and the fourth feeding port is connected with the discharging end of the second weighing mechanism. And the coulter mixer is connected with the extruder.

Description

Technical Field

[0001] The utility model relates to a double-mixing extruder. Background Art

[0002] For the processing of PVC pipe products at home and abroad, basically all large enterprises now use fully automatic feeding systems. Since pipes have different formulas and different colors, the traditional method is to put PVC powder, calcium carbonate, formula, color powder, and crushed materials into a high-speed mixer for high-speed mixing. Because the fully automatic feeding system is used, if the formula color needs to be changed, the high-speed mixer and the pipeline for feeding and conveying to the extruder must be cleaned. This project is very complicated and huge, wasting time and manpower. It is also impossible for a single system to supply one pipe specification, which will cause a waste of resources and production management cannot be flexibly allocated. Utility Model Content

[0003] The utility model proposes a double-mixing extruder, comprising a main material mixing mechanism, a color material feeding mechanism, a crushing material conveying mechanism, a plowshare mixer, a first weighing mechanism of the extruder and a second weighing mechanism, wherein the first weighing mechanism is provided with a first feed port and a second feed port, the first feed port is connected to the main material mixing mechanism, the second feed port is connected to the crushing material conveying mechanism, the second weighing mechanism is connected to the color material feeding mechanism, the plowshare mixer is provided with a third feed port and a fourth feed port, the third feed port is connected to the discharge port of the first weighing mechanism, the fourth feed port is connected to the discharge end of the second weighing mechanism, and the plowshare mixer is connected to the extruder.

[0004] In one or more embodiments, the main material mixing mechanism is provided with a main material dust collector, a loader, a mixing material bin, and a discharge rotary valve. The loader is connected to the mixing material chamber and supplies the mixing material bin, the main material dust collector is installed on the mixing material bin, and the discharge rotary valve is connected to the discharge port of the mixing material bin.

[0005] In one or more embodiments, a plurality of main material level meters with different horizontal heights are provided on the mixing silo.

[0006] In one or more embodiments, the colorant feeding mechanism is provided with a colorant dust collector and a colorant feeding hopper. The colorant dust collector is arranged on the colorant feeding hopper. The colorant feeding hopper is provided with a plurality of colorant level meters with different horizontal heights.

[0007] In one or more embodiments, the crushing material conveying mechanism is provided with a crushing material conveying bucket and a crushing material conveying screw, and the crushing material conveying screw is transversely arranged and connected to the crushing material conveying bucket.

[0008] In one or more embodiments, the plowshare mixer is provided with a mixing chamber, a plowshare and a flying cutter head. The mixing chamber is provided with a stirring shaft spanning the left and right sides of the mixing chamber, and the stirring shaft is arranged on the transverse center line of the mixing chamber. The stirring shaft is provided with a first plowshare and a second plowshare. The second plowshare is arranged on the left and right sides of the stirring shaft, and the first plowshare is arranged between the left second plowshare and the right second plowshare. The first plowshare is circumferentially spaced on the stirring shaft, and the flying cutter head extends obliquely upward from the lower part of the mixing chamber.

[0009] By setting a mixing chamber with a plowshare and a flying cutter head in the mixing chamber, the formula, color powder and crushed material are mixed on the plowshare mixer and then transported to the main machine, which facilitates production, increases mixing speed and mixing efficiency, and solves the problem of mixing the formula, color powder and crushed material of the 300 plowshare mixer.

[0010] In one or more embodiments, the second plowshare is fan-shaped, and the second plowshare is inclined from the left side or right side of the mixing chamber to the lateral center of the mixing chamber, the first plowshare is plowshare-shaped, and the first plowshare is provided with a first edge portion, and the first edge portion is close to the cylindrical inner wall of the mixing chamber, the second plowshare is shovel-shaped, and the second plowshare is provided with a second edge, and the second edge is close to the left plate or right plate of the mixing chamber.

[0011] In one or more embodiments, the flying knife head is provided with a flying knife shaft and a plurality of flying knives, the flying knives are mounted on the flying knife shaft, the flying knife shaft is connected to the motor shaft of the driving motor, a scattering sleeve is provided on the flying knife shaft, the scattering sleeve moves synchronously with the flying knife shaft, a plurality of circumferentially arranged convex ribs are provided on the scattering sleeve, the flying knives are provided with a first flying knife, a second flying knife and a third flying knife in sequence from top to bottom, the circumferential rotation diameter of the first flying knife is greater than the circumferential rotation diameter of the second flying knife, the circumferential rotation diameter of the second flying knife is greater than the circumferential rotation diameter of the third flying knife, the first flying knife, the second flying knife and the third flying knife are stacked up and down, a first interval is provided between the first flying knife and the second flying knife, and a second interval is provided between the second flying knife and the third flying knife.

[0012] In one or more embodiments, a bearing mounting seat is provided on the driving motor, an air sealing cover is provided above the bearing mounting seat, a gap is provided between the air sealing cover and the flying knife shaft, the gap is connected to the air inlet of the air sealing cover, a double-row radial thrust ball bearing is provided on the bearing mounting seat, a sealing air disc is provided at the upper end of the air sealing cover, a zigzag gap with a transverse trend is provided between the sealing air disc and the air sealing cover, the zigzag gap is connected to the gap, air outlets are formed at the left and right ends of the sealing air disc, a labyrinth air-sealing nylon sleeve is also provided on the air sealing cover, the labyrinth air-sealing nylon sleeve is sleeved on the wear-resistant steel sleeve, and the wear-resistant steel sleeve is sleeved on the flying knife shaft.

[0013] By arranging double-row radial thrust ball bearings, rotating shaft sealing rings, air inlet seals and spacer sleeves on the flying knife shaft, a triple protection seal is formed. The flying knife shaft has good sealing performance and the bearing is durable.

[0014] In one or more embodiments, a sampling mechanism is provided on the mixing chamber, a mounting hole is provided at the lower portion of the mixing chamber, the sampling mechanism is installed on the mounting hole, the sampling mechanism is provided with a sampling barrel, a sealing cover and a discharge pipe, the discharge pipe is provided on the side wall of the sampling barrel and is connected with the inner cavity of the sampling barrel, the sealing cover is provided in the inner cavity and can move along the length direction of the inner cavity to close the sampling port or open the sampling port and the discharge port of the discharge pipe, a handwheel is provided on the sampling mechanism, a driving screw is provided between the handwheel and the sealing cover, the driving screw is gear-connected with the sampling barrel, a fixing nut is provided on the sampling barrel, the driving screw is threadedly connected with the fixing nut, and the driving screw moves along the length direction of the sampling barrel under the drive of the handwheel.

[0015] A sampling mechanism is provided on the side wall of the mixing chamber so that sampling can be performed at any time and in real time during mixing. The sampling mechanism drives the screw opening mounting hole through a hand wheel to sample or close the mounting hole. The opening area of ​​the discharge port can be manually controlled to facilitate adjustment of the sampling amount and avoid splashing of raw materials and mixed materials.

[0016] Workflow:

[0017] 1. Start the feeding system. The system determines whether it is necessary to draw materials according to the material level meter on the main material mixing bin to ensure that the bin is always full; 2. Workers feed materials according to the instructions of the alarm lights on the color material feeding mechanism and the crushing material conveying mechanism to ensure that the color material feeding mechanism and the crushing material conveying mechanism have sufficient raw materials; 3. According to the weight set by the system, the main material is first fed into the first weighing mechanism. When the weight is reached, the main material feeding is stopped, and then the crushing material is continued to be fed until the total weight reaches the set weight and the feeding is stopped; 4. A part of the color powder material on the color material feeding mechanism will be transported to the second weighing mechanism in advance. After the main material and the crushing material are weighed, the second weighing mechanism will feed the set weight of color powder into the mixer according to the color powder weight set by the system; 5. When all the weighed raw materials are fed into the coulter mixer, the mixer valve is closed and mixing begins until the mixer completes the mixing according to the time set by the program, and then all the mixed materials are transported to the buffer hopper on the extruder. In this way, the entire weighing and mixing process is completed, and the above actions are repeated.

[0018] The beneficial effects of the utility model are as follows: by feeding the main material, colorant and crushed material independently, first mixing the main material and crushed material, and then sending the main material and crushed material mixture and the colorant to the plowshare mixer for mixing, it is avoided that the pipelines of the entire system need to be cleaned when replacing the colorant. When the colorant needs to be replaced, it is only necessary to replace the colorant feeding mechanism and the plowshare mixer. The operation is simple and convenient, and a lot of manpower cleaning time is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of a dual-mix extruder.

[0020] Figure 2 Schematic diagram of the color material feeding mechanism of the dual-mixing extruder.

[0021] Figure 3 Schematic diagram of crushed material conveying mechanism.

[0022] Figure 4 Schematic diagram of a plowshare mixer.

[0023] Figure 5 This is a schematic cross-sectional view of a plowshare mixer.

[0024] Figure 6 Another cross-sectional schematic diagram of the plowshare mixer.

[0025] Figure 7 This is a schematic diagram of the flying cutter head.

[0026] Figure 8 Schematic diagram of the sampling mechanism. DETAILED DESCRIPTION

[0027] The present application scheme is further described as follows in conjunction with the accompanying drawings:

[0028] See attached Figure 1-8 A dual-mixing extruder comprises a main material mixing mechanism 1, a color material feeding mechanism 2, a crushing material conveying mechanism 3, a plowshare mixer 4, a first weighing mechanism 5 of the extruder and a second weighing mechanism 6, wherein the first weighing mechanism 5 is provided with a first feed port and a second feed port, the first feed port is connected to the main material mixing mechanism 1, the second feed port is connected to the crushing material conveying mechanism 3, the second weighing mechanism 6 is connected to the color material feeding mechanism 2, the plowshare mixer 4 is provided with a third feed port and a fourth feed port, the third feed port is connected to the discharge port of the first weighing mechanism 4, the fourth feed port is connected to the discharge end of the second weighing mechanism 6, and the plowshare mixer 4 is connected to the extruder 7.

[0029] Furthermore, the main material mixing mechanism 1 is provided with a main material dust collector 11, a loader 12, a mixing material bin 15, and a discharge rotary valve 14. The loader 12 is connected to the mixing material chamber 15 and supplies the mixing material bin 15. The main material dust collector 11 is installed on the mixing material bin 15, and the discharge rotary valve 14 is connected to the discharge port of the mixing material bin.

[0030] Furthermore, the mixing silo 15 is provided with a plurality of main material level meters 13 with different levels.

[0031] Furthermore, the colorant feeding mechanism 2 is provided with a colorant dust collector 21 and a colorant feeding hopper 23 . The colorant dust collector 21 is arranged on the colorant feeding hopper 23 . The colorant feeding hopper 23 is provided with a plurality of colorant level meters 22 of different horizontal heights.

[0032] Furthermore, the crushing material conveying mechanism 3 is provided with a crushing material conveying bucket 31 and a crushing material conveying screw 32 , and the crushing material conveying screw 32 is transversely arranged and connected to the crushing material conveying bucket 31 .

[0033] Furthermore, the plowshare mixer 4 is provided with a mixing chamber 41, a plowshare 42 and a flying cutter head 43. The mixing chamber 41 is provided with a stirring shaft 425 spanning the left and right sides of the mixing chamber 41, and the stirring shaft 425 is arranged on the transverse center line of the mixing chamber 41. The stirring shaft 425 is provided with a first plowshare 421 and a second plowshare 422. The second plowshare 422 is arranged on the left and right sides of the stirring shaft 425, and the first plowshare 421 is arranged between the left second plowshare and the right second plowshare. The first plowshare 421 is circumferentially spaced on the stirring shaft 425, and the flying cutter head 43 extends obliquely upward from the lower part of the mixing chamber 41.

[0034] Further, the second plowshare 422 is fan-shaped, and the second plowshare 422 is inclined from the left side or right side of the mixing chamber 41 to the lateral center of the mixing chamber 41, the first plowshare 421 is plowshare-shaped, the first plowshare 421 is provided with a first edge portion 423, the first edge portion 423 is close to the cylindrical inner wall of the mixing chamber 41, the second plowshare 422 is shovel-shaped, the second plowshare 422 is provided with a second edge 424, the second edge 424 is close to the left plate or the right plate of the mixing chamber 41.

[0035] Furthermore, the flying knife head 43 is provided with a flying knife shaft 431 and a plurality of flying knives 432, the flying knives 432 are mounted on the flying knife shaft 431, the flying knife shaft 431 is connected to the motor shaft of the driving motor 430, the flying knife shaft 431 is provided with a scattering sleeve 433, the scattering sleeve 433 moves synchronously with the flying knife shaft 431, the scattering sleeve 433 is provided with a plurality of circumferentially arranged convex ribs 434, and the flying knife 432 is provided with a first flying knife 4321, a second flying knife 4322 in sequence from top to bottom. 322 and the third flying knife 4323, the circumferential rotation diameter of the first flying knife 4321 is greater than the circumferential rotation diameter of the second flying knife 4322, the circumferential rotation diameter of the second flying knife 4322 is greater than the circumferential rotation diameter of the third flying knife 4323, the first flying knife 4321 and the second flying knife and the third flying knife 4323 are stacked up and down and a first interval is set between the first flying knife 4321 and the second flying knife 4322, and a second interval is set between the second flying knife 4322 and the third flying knife 4323.

[0036] Furthermore, the driving motor 430 is provided with a bearing mounting seat 435, an air seal cover 436 is provided above the bearing mounting seat 435, a gap 4361 is provided between the air seal cover 436 and the flying knife shaft 431, the gap 4361 is connected to the air inlet 4362 of the air seal cover 436, a double-row radial thrust ball bearing 437 is provided on the bearing mounting seat 435, and a sealing air disc 438 is provided at the upper end of the air seal cover 436. A lateral tortuous gap 4381 is arranged between the sealing air disc 438 and the air sealing cover 436, and the tortuous gap 4381 is communicated with the gap 4361. Air outlets 4382 are formed at the left and right ends of the sealing air disc 438. A labyrinth air-sealing nylon sleeve 439 is also arranged on the air sealing cover 436. The labyrinth air-sealing nylon sleeve 439 is sleeved on a wear-resistant steel sleeve 4391, and the wear-resistant steel sleeve 4391 is sleeved on the flying knife shaft 431.

[0037] Further, the mixing chamber 41 is provided with a sampling mechanism 44, the lower part of the mixing chamber 41 is provided with a mounting hole, the sampling mechanism 44 is installed on the mounting hole, the sampling mechanism 44 is provided with a sampling barrel 441, a sealing gland 442 and a discharge pipe 443, the discharge pipe 443 is provided on the side wall of the sampling barrel 441 and communicates with the inner cavity of the sampling barrel 441, the sealing gland 442 is provided in the inner cavity and can move along the length direction of the inner cavity to close the sampling port or The sampling port and the discharge port of the discharge pipe 443 are opened, a handwheel 445 is provided on the sampling mechanism 44, a driving screw 444 is provided between the handwheel 445 and the sealing cover 442, the driving screw 444 is gear-engaged with the sampling barrel 441, a fixing nut 446 is provided on the sampling barrel 441, the driving screw 444 is threadedly connected with the fixing nut 446, and the driving screw 444 moves along the length direction of the sampling barrel 441 under the drive of the handwheel 445.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0043] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A dual-mix extruder, characterized in that: It includes a main material mixing mechanism, a color material feeding mechanism, a crushing material conveying mechanism, a plowshare mixer, a first weighing mechanism of an extruder and a second weighing mechanism. The first weighing mechanism is provided with a first feed port and a second feed port. The first feed port is connected to the main material mixing mechanism, the second feed port is connected to the crushing material conveying mechanism, the second weighing mechanism is connected to the color material feeding mechanism, the plowshare mixer is provided with a third feed port and a fourth feed port. The third feed port is connected to the discharge port of the first weighing mechanism, the fourth feed port is connected to the discharge end of the second weighing mechanism, the plowshare mixer is connected to the extruder, the main material mixing mechanism is provided with a main material dust collector, a feeder, a mixed material bin, and a discharge rotary valve. The feeder is connected to the mixed material chamber and feeds the mixed material bin. The main material dust collector is installed on the mixed material bin, and the discharge rotary valve is connected to the discharge port of the mixed material bin.

2. The dual-mix extruder according to claim 1, characterized in that: The mixing silo is provided with a plurality of main material level meters with different levels.

3. The dual-mix extruder according to claim 1, characterized in that: The color material feeding mechanism is provided with a color material dust collector and a color material feeding hopper. The color material dust collector is arranged on the color material feeding hopper. The color material feeding hopper is provided with a plurality of color material level meters with different horizontal heights.

4. The dual-mix extruder according to claim 1, characterized in that: The crushing material conveying mechanism is provided with a crushing material conveying bucket and a crushing material conveying screw, and the crushing material conveying screw is transversely arranged and connected to the crushing material conveying bucket.

5. The dual-mix extruder according to claim 1, characterized in that: The plowshare mixer is provided with a mixing chamber, a plowshare and a flying cutter head. The mixing chamber is provided with a stirring shaft spanning the left and right sides of the mixing chamber, and the stirring shaft is arranged on the transverse center line of the mixing chamber. The stirring shaft is provided with a first plowshare and a second plowshare. The second plowshare is arranged on the left and right sides of the stirring shaft, and the first plowshare is arranged between the left second plowshare and the right second plowshare. The first plowshare is arranged on the stirring shaft at circumferential intervals, and the flying cutter head extends obliquely upward from the lower part of the mixing chamber.

6. The dual-mix extruder according to claim 5, characterized in that: The second plowshare is fan-shaped, and is inclined from the left or right side of the mixing chamber to the lateral center of the mixing chamber. The first plowshare is plowshare-shaped, and is provided with a first edge portion, and the first edge portion is close to the cylindrical inner wall of the mixing chamber. The second plowshare is shovel-shaped, and is provided with a second edge, and the second edge is close to the left plate or right plate of the mixing chamber.

7. The dual-mix extruder according to claim 5, characterized in that: The flying cutter head is provided with a flying cutter shaft and a plurality of flying cutters, the flying cutters are mounted on the flying cutter shaft, the flying cutter shaft is connected to the motor shaft of the driving motor, a scattering sleeve is provided on the flying cutter shaft, the scattering sleeve moves synchronously with the flying cutter shaft, a plurality of circumferentially arranged convex ribs are provided on the scattering sleeve, the flying cutters are provided with a first flying cutter, a second flying cutter and a third flying cutter in sequence from top to bottom, the circumferential rotation diameter of the first flying cutter is greater than the circumferential rotation diameter of the second flying cutter, the circumferential rotation diameter of the second flying cutter is greater than the circumferential rotation diameter of the third flying cutter, the first flying cutter, the second flying cutter and the third flying cutter are stacked up and down, a first interval is provided between the first flying cutter and the second flying cutter, and a second interval is provided between the second flying cutter and the third flying cutter.

8. The dual-mix extruder according to claim 7, characterized in that: A bearing mounting seat is provided on the driving motor, an air sealing cover is provided above the bearing mounting seat, a gap is provided between the air sealing cover and the flying knife shaft, the gap is connected to the air inlet of the air sealing cover, a double-row radial thrust ball bearing is provided on the bearing mounting seat, a sealing air disc is provided on the upper end of the air sealing cover, a zigzag interval with a transverse trend is provided between the sealing air disc and the air sealing cover, the zigzag interval is connected with the gap, air outlets are formed at the left and right ends of the sealing air disc, a labyrinth air-sealing nylon sleeve is also provided on the air sealing cover, the labyrinth air-sealing nylon sleeve is sleeved on the wear-resistant steel sleeve, and the wear-resistant steel sleeve is sleeved on the flying knife shaft.

9. The dual-mix extruder according to claim 5, characterized in that: The mixing chamber is provided with a sampling mechanism, a mounting hole is provided at the lower portion of the mixing chamber, the sampling mechanism is installed on the mounting hole, the sampling mechanism is provided with a sampling barrel, a sealing gland and a discharge pipe, the discharge pipe is provided on the side wall of the sampling barrel and is connected with the inner cavity of the sampling barrel, the sealing gland is provided in the inner cavity and can move along the length direction of the inner cavity to close the sampling port or open the sampling port and the discharge port of the discharge pipe, the sampling mechanism is provided with a handwheel, a driving screw is provided between the handwheel and the sealing gland, the driving screw is gear-connected with the sampling barrel, a fixing nut is provided on the sampling barrel, the driving screw is threadedly connected with the fixing nut, and the driving screw moves along the length direction of the sampling barrel under the drive of the handwheel.

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