阅读说明：本技术 一种用于塑料回收的螺杆机筒组合装置 (Screw and machine barrel combined device for plastic recovery ) 是由 夏增富 夏瑜键 于 2021-09-16 设计创作，主要内容包括：一种用于塑料回收的螺杆机筒组合装置,包括机筒和螺杆,在机筒的进料口处设置有能方便下料的偏心缺口,螺杆包括杆体和螺棱,螺棱包括进料段、熔融段和出料段,与机筒的进料口对应的螺棱为顶部宽而根部窄、轴向截面呈楔形的剪切螺棱,剪切螺棱的轴向截面顶角为尖角,剪切螺棱的轴向截面的前侧边与杆体表面之间的夹角为80～87°。本发明的优点在于：顶角十分锋利,有助于切断条带状的边角料；剪切螺棱的轴向截面的前侧边与杆体表面之间的夹角为80～87°,既保障了螺棱根部的强度,同时造型上呈上端宽而下端窄的结构,使螺棱的顶角向前凸出,更有效率地切断进料；偏心缺口方便边角料下料,与旋转的螺杆相配合,减少进料口处进料回吐。(The utility model provides a screw rod barrel composite set for plastics are retrieved, includes barrel and screw rod, is provided with the eccentric breach that can make things convenient for the unloading in the feed inlet department of barrel, and the screw rod includes the body of rod and spiral shell arris, and the spiral shell arris includes feed zone, melting section and ejection of compact section, and the spiral shell arris that corresponds with the feed inlet of barrel is wide for the top and the root is narrow, axial cross section is wedge-shaped shearing spiral shell arris, and the axial cross section apex angle of shearing spiral shell arris is the closed angle, and the contained angle between the axial cross section's of shearing spiral shell arris preceding side and the body of rod surface is 80 ~ 87. The invention has the advantages that: the top angle is very sharp, which is helpful for cutting off strip-shaped leftover materials; an included angle between the front side edge of the axial section of the shearing screw edge and the surface of the rod body is 80-87 degrees, the strength of the root part of the screw edge is guaranteed, and meanwhile, the modeling is of a structure with a wide upper end and a narrow lower end, so that the vertex angle of the screw edge protrudes forwards, and feeding is cut off more efficiently; the eccentric gap facilitates leftover material blanking, and is matched with the rotating screw, so that feeding and return of the feeding port are reduced.)

1. The utility model provides a screw rod barrel composite set for plastics are retrieved, includes barrel (2) and can wear to put screw rod (1) in barrel (2) inner chamber, is provided with eccentric breach (22) that can make things convenient for the unloading in feed inlet (21) department of barrel (2), screw rod (1) is including the body of rod and spiral shell arris, the spiral shell arris includes feed section (A), melting section (B) and ejection of compact section (C), its characterized in that: the screw edge corresponding to the feeding port (21) of the machine barrel (2) is wide at the top, narrow at the root and wedge-shaped in axial section, the vertex angle (11) of the axial section of the screw edge is a sharp angle, and the included angle (a) between the front side of the axial section of the screw edge and the surface of the rod body is 80-87 degrees.

2. The screw-barrel combination of claim 1, wherein: the feeding section (A) comprises a feeding section (A1) and a feeding section (A2), wherein the feeding section (A1) is a shearing screw rib, the feeding section (A1) is a double screw rib, the feeding section (A2) is a single screw rib, and stirring convex columns (12) are arranged on a rod body between adjacent screw ribs of the feeding section (A2) at intervals along the screw rib spiral direction.

3. The screw-barrel combination of claim 2, wherein: the stirring convex columns (12) are cylinders, the number of the cylinders on the circumference of the rod body is four on a projection drawing along the axial direction of the rod body, and the four cylinders are distributed on the circumference of the rod body at equal intervals.

4. The screw-barrel combination of claim 3, wherein: the melting section (B) is a single spiral edge, and the rod body corresponding to the melting section (B) is a conical body with a large rod body diameter close to the discharging section and a small rod body diameter close to the feeding section.

5. The screw-barrel combination of claim 4, wherein: be provided with stirring arch (13) along spiral arris spiral direction interval on the body of rod between the adjacent spiral arris of melting section (B), stirring arch (13) are the cylinder the same with stirring projection (12) appearance, and on the axial projection drawing of body of rod of edge, the quantity of the protruding (13) of stirring that is located body of rod circumference is four, and four stirring arch (13) distribute on body of rod circumference equally spaced.

6. The screw-barrel combination of claim 5, wherein: the rear side edge of the axial section of the melting section screw edge (15) is a bevel edge, the inclination angle of the bevel edge is 30 degrees, and the front side edge of the axial section of the melting section screw edge (15) is a right-angle edge.

7. The screw-barrel combination of claim 5, wherein: ejection of compact section (C) is single spiral arris, is provided with protruding cylinder (14) along spiral arris spiral direction interval on the body of rod between the adjacent spiral arris of ejection of compact section (C), protruding cylinder (14) are the cylinder the same with stirring projection (12) appearance, on the axial projection drawing of the body of rod of following, the quantity that is located protruding cylinder (14) on the body of rod circumference is four, and four protruding cylinders (14) distribute on the body of rod circumference with equal interval.

8. The screw-barrel combination according to any one of claims 1 to 6, wherein: barrel (2) are formed by barrel one section (D1) and barrel two sections (D2) concatenation, are provided with flange on barrel one section (D1) and barrel two sections (D2) involution tip respectively, and feed inlet (21) are located barrel one section (D1), and axial cross section width (L) of eccentric breach (22) is 2 ~ 5mm, and the minimum distance between the screw arris surface of screw rod (1) that is located in barrel (2) inner chamber and the barrel inner wall is 0.5 ~ 1 mm.

9. The screw-barrel combination of claim 8, wherein: the water circulating device is characterized in that U-shaped water circulating grooves (23) are formed in the outer wall of one barrel section (D1), the adjacent water circulating grooves (23) are sequentially connected, a sealing sleeve plate is buckled on the outer wall of the barrel section (D1) corresponding to the water circulating grooves (23), the water circulating grooves (23) are sealed into water circulating cavities by the sealing sleeve plate, water inlet holes (24) are formed in the outer wall of the barrel section (D1) corresponding to the front end of the water circulating grooves (23), and water outlet holes (25) are formed in the outer wall of the barrel section (D1) corresponding to the rear end of the water circulating grooves (23).

10. The screw-barrel combination of claim 8, wherein: the outer wall of the barrel two-section (D2) is provided with a spiral liquid passing groove (26), the outer wall of the barrel two-section (D2) corresponding to the liquid passing groove (26) is buckled with a sealing sleeve body, the sealing sleeve body seals the liquid passing groove (26) into a liquid passing cavity, the outer wall of the barrel two-section (D2) corresponding to the front end of the liquid passing groove (26) is provided with a water inlet (27), and the outer wall of the barrel two-section (D2) corresponding to the rear end of the liquid passing groove (26) is provided with a water outlet (28).

Technical Field

The invention relates to the technical field of screw and machine barrel manufacturing, in particular to a screw and machine barrel combined device for plastic recovery.

Background

The prior Chinese utility model patent with the application number of CN200720086981.1 entitled "ultra-high molecular weight polyethylene tubular product single screw extruder barrel former" discloses an ultra-high molecular weight polyethylene (UHMWPE) tubular product single screw extruder barrel former, which comprises a hopper seat, a barrel, a screw, a shaping mandrel, a shaping sleeve and a cooling sleeve, wherein the barrel is connected with the hopper seat through a flange, the barrel consists of a front end barrel and a rear end barrel, a pressurizing lining is connected in the rear end barrel, the screw is placed in the barrel, one end of the screw is fixed on the hopper seat, the other end of the screw is connected with the shaping mandrel, and the front end barrel is sequentially connected with the shaping sleeve and the cooling sleeve into a whole. The utility model discloses a solved and carried out the technological problem that single screw rod extrusion moulding processed at the ultra high molecular weight polyethylene that does not have the viscous state under the molten condition, under the prerequisite that the excellent performance of intact ultra high molecular weight polyethylene that keeps, realized the target of ultra high molecular weight polyethylene tubular product continuous production. However, the molding apparatus has difficulty in handling scrap in a strip or tape form, and therefore the structure of the molding apparatus needs to be further improved.

Disclosure of Invention

The invention aims to solve the technical problem of providing a screw and barrel combination device for plastic recovery, which has smooth leftover material blanking and good material treatment effect, aiming at the current situation of the prior art.

The technical scheme adopted by the invention for solving the technical problems is as follows: this a screw rod barrel composite set for plastics are retrieved, include the barrel and can wear the screw rod of putting in a section of thick bamboo inner chamber, be provided with the eccentric breach that can make things convenient for the unloading in the feed inlet department of a section of thick bamboo, the screw rod includes the body of rod and spiral shell arris, the spiral shell arris includes feeding section, melting section and ejection of compact section, its characterized in that: the screw arris that correspond with the feed inlet of barrel are that the top is wide and the root is narrow, axial cross-section is wedge shearing screw arris, the axial cross-section apex angle of shearing screw arris is the closed angle, the contained angle between the axial cross-section's of shearing screw arris front side and the body of rod surface is 80 ~ 87.

As an improvement, the feeding section may preferably include a feeding section and a feeding section, the feeding section is a shearing screw rib, the feeding section is a double screw rib, the feeding section is a single screw rib, and stirring convex columns are arranged on the rod body between adjacent screw ribs of the feeding section at intervals along the screw rib spiral direction.

In a further improvement, the stirring convex columns may preferably be cylinders, and on a projection view along the axial direction of the rod body, the number of the cylinders on the circumference of the rod body is four, and the four cylinders are distributed on the circumference of the rod body at equal intervals.

In a further improvement, the melting section can be preferably a single spiral edge, and the rod body corresponding to the melting section is a conical body with a larger rod body diameter at one side close to the discharging section and a smaller rod body diameter at one side close to the feeding section.

Further improve, can be preferably provided with the stirring arch along the spiral direction interval of spiral arris on the body of rod between the adjacent spiral arris of melting section, the stirring arch is the cylinder the same with stirring projection appearance, and on the axial projection drawing of body of rod, the protruding quantity of stirring that is located on the body of rod circumference is four, and four stirring archs distribute on the body of rod circumference equally spaced.

In a further improvement, the rear side of the axial section of the melting section screw edge may preferably be a bevel edge, the angle of inclination of the bevel edge is 30 °, and the front side of the axial section of the melting section screw edge is a right-angle side.

The improved structure of the stirring convex column is characterized in that the discharging section can be preferably a single spiral ridge, protruding columns are arranged on the rod body between the adjacent spiral ridges of the discharging section at intervals along the spiral direction of the spiral ridge, the protruding columns are cylinders with the same shape as the stirring convex columns, the number of the protruding columns on the circumference of the rod body is four on the projection drawing along the axial direction of the rod body, and the four protruding columns are distributed on the circumference of the rod body at equal intervals.

As an improvement, the machine barrel can be formed by splicing a first machine barrel section and a second machine barrel section, connecting flanges are arranged at the involutive end parts of the first machine barrel section and the second machine barrel section respectively, the feed inlet is positioned on the first machine barrel section, the axial section width of the eccentric notch is 2-5 mm, and the minimum distance between the outer surface of the screw ridge of the screw rod positioned in the inner cavity of the machine barrel and the inner wall of the machine barrel is 0.5-1 mm.

The water supply device is characterized in that a U-shaped water through groove is preferably arranged on the outer wall of the section of the machine barrel, the adjacent water through grooves are sequentially connected, a sealing sleeve plate is buckled on the outer wall of the section of the machine barrel corresponding to the water through groove, the sealing sleeve plate seals the water through groove into a water through cavity, a water inlet hole is formed in the outer wall of the section of the machine barrel corresponding to the front end of the water through groove, and a water outlet hole is formed in the outer wall of the section of the machine barrel corresponding to the rear end of the water through groove.

The improved structure is characterized in that a spiral liquid through groove can be preferably arranged on the outer wall of the two barrel sections, a sealing sleeve body is buckled on the outer wall of the two barrel sections corresponding to the liquid through groove, the sealing sleeve body seals the liquid through groove into a liquid through cavity, a water inlet is arranged on the outer wall of the two barrel sections corresponding to the front end of the liquid through groove, and a water outlet is arranged on the outer wall of the two barrel sections corresponding to the rear end of the liquid through groove.

Compared with the prior art, the invention has the advantages that: the cutting screw edge which is wide at the top, narrow at the root and wedge-shaped in axial section is adopted as the screw edge corresponding to the feeding hole of the machine barrel, so that leftover materials which are strip-shaped and 0.1-0.5 mm in thickness can be better cut; the vertex angle of the axial section of the shearing screw edge is a sharp angle, and the vertex angle is very sharp, so that the shearing screw edge is beneficial to cutting off strip-shaped leftover materials; the included angle between the front side edge of the axial section of the shearing screw edge and the surface of the rod body is 80-87 degrees, the strength of the root part of the screw edge is guaranteed, and meanwhile, the shape of the shearing screw edge is of a structure with a wide upper end and a narrow lower end, so that the vertex angle of the screw edge protrudes forwards, the feeding is cut off more efficiently, and the problem of difficult feeding of leftover materials is solved; an eccentric notch can be formed at the feed inlet of the machine barrel, so that the strip-shaped leftover materials can be conveniently fed, and the feed inlet is spiral on the radial section due to the eccentric notch, so that the feed inlet can be matched with a rotating screw rod, and the feed return at the feed inlet is reduced; the grooves for allowing cooling liquid to pass through can be formed in the outer wall of the machine barrel, so that the temperature of the inner cavity of the machine barrel is reduced, the phenomenon that the temperature inside the machine barrel is too high is avoided, the probability of high-temperature denaturation of materials is reduced, and the material treatment effect is good.

Drawings

FIG. 1 is a front perspective view of a screw according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line E-E of FIG. 1;

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

FIG. 4 is a cross-sectional view of the barrel of an embodiment of the present invention taken along the plane of the central axis;

FIG. 5 is a cross-sectional view taken along line G-G of FIG. 4;

FIG. 6 is a side elevational view of FIG. 4;

FIG. 7 is a side elevational view of the alternate angle of FIG. 4;

FIG. 8 is a top view of the feedwell of FIG. 4.

Detailed Description

The invention is described in further detail below with reference to the accompanying examples.

As shown in fig. 1 to 8, the screw and barrel combination device for plastic recycling of this embodiment includes a barrel 2 and a screw 1 capable of penetrating through an inner cavity of the barrel 2, an eccentric notch 22 capable of facilitating discharging is provided at a feed port 21 of the barrel 2, the screw 1 includes a rod body and screw edges, the screw edges include a feed section a, a melting section B and a discharge section C, the screw edges corresponding to the feed port 21 of the barrel 2 are shearing screw edges with wide top and narrow root, and the axial cross section is wedge-shaped, an axial cross section vertex angle 11 of the shearing screw edges is a sharp angle, and an included angle a between a front side of the axial cross section of the shearing screw edges and the surface of the rod body is 80 to 87 °.

The feeding section A comprises a feeding section A1 and a feeding section A2, the feeding section A1 is a shearing screw rib, the feeding section A1 is a double screw rib, the feeding section A2 is a single screw rib, and stirring convex columns 12 are arranged on a rod body between adjacent screw ribs of the feeding section A2 at intervals along the screw rib spiral direction. The stirring convex columns 12 are cylinders, the number of the cylinders on the circumference of the rod body is four on the projection drawing along the axial direction of the rod body, and the four cylinders are distributed on the circumference of the rod body at equal intervals.

The melting section B is a single screw edge, and the rod body corresponding to the melting section B is a cone body with a larger rod body diameter at one side close to the discharging section and a smaller rod body diameter at one side close to the feeding section. Stirring bulges 13 are arranged on the rod body between adjacent spiral ridges of the melting section B at intervals along the spiral direction of the spiral ridges, the stirring bulges 13 are cylinders with the same shape as the stirring convex columns 12, the number of the stirring bulges 13 on the circumference of the rod body is four on a projection drawing along the axial direction of the rod body, and the four stirring bulges 13 are distributed on the circumference of the rod body at equal intervals. The back side of the axial cross-section of the melt section flight 15 is a hypotenuse, the angle of inclination of the hypotenuse is 30 °, and the front side of the axial cross-section of the melt section flight 15 is a right angle.

The ejection of compact section C is single spiral arris, is provided with protruding cylinder 14 along spiral arris spiral direction interval on the body of rod between the adjacent spiral arris of ejection of compact section C, and protruding cylinder 14 is the cylinder the same with 12 appearances of stirring projection, and on the axial projection drawing of the body of rod of edge, the quantity of the protruding cylinder 14 that is located on the body of rod circumference is four, and four protruding cylinders 14 distribute on the body of rod circumference equally spaced.

The machine barrel 2 is formed by splicing a section D1 of the machine barrel and a section D2 of the machine barrel, connecting flanges are respectively arranged at the opposite ends of the section D1 of the machine barrel and the section D2 of the machine barrel, the feed inlet 21 is positioned on the section D1 of the machine barrel, the axial section width L of the eccentric notch 22 is 2-5 mm, and the minimum distance between the outer surface of a screw ridge of the screw 1 positioned in the inner cavity of the machine barrel 2 and the inner wall of the machine barrel is 0.5-1 mm. The outer wall of the barrel section D1 is provided with a U-shaped water passing groove 23, adjacent water passing grooves 23 are connected in sequence, the outer wall of the barrel section D1 corresponding to the water passing groove 23 is buckled with a sealing sleeve plate, the water passing groove 23 is sealed into a water passing cavity by the sealing sleeve plate, the outer wall of the barrel section D1 corresponding to the front end of the water passing groove 23 is provided with a water inlet hole 24, and the outer wall of the barrel section D1 corresponding to the rear end of the water passing groove 23 is provided with a water outlet hole 25. The outer wall of the barrel section D2 is provided with a spiral liquid passing groove 26, the outer wall of the barrel section D2 corresponding to the liquid passing groove 26 is buckled with a sealing sleeve body, the sealing sleeve body seals the liquid passing groove 26 into a liquid passing cavity, the outer wall of the barrel section D2 corresponding to the front end of the liquid passing groove 26 is provided with a water inlet 27, and the outer wall of the barrel section D2 corresponding to the rear end of the liquid passing groove 26 is provided with a water outlet 28.

With the popularization of plastic products, market competition is extremely intense, customers want to reduce control cost in all aspects, and recycling of leftover materials becomes a first choice among a plurality of ways. However, many customers find that most of cut leftover materials are strip-shaped strips, the thickness of the leftover materials is about 0.1-0.5 mm, and the existing screw machine barrel is difficult to blank. And customers need to send specially-assigned persons to help the screw machine barrel to feed, so that the cost is increased.

Due to the existence of the problem, the invention solves the problem of difficult blanking through the design of the screw barrel. The control of the gaps between the screw and the machine barrel on the left side and the right side of the feeding hole is realized; the materials can be fed and cut off; the feeding cutting and pushing are kept in a relatively stable period, and more time and less time cannot be used.

The main technical indexes are as follows:

1. the left side of the feed inlet is eccentric, and the eccentric size is 2-5 mm different from the eccentric size of an inner hole of a machine barrel;

2. the clearance between the screw at the feed opening and the machine barrel cannot be more than 10 silks and meters, and the single side is controlled to be 5 silks and meters;

3. double-end screw threads are needed at the feeding section of the screw, the pitch of the screw thread is reduced by half, and the shearing and pushing are increased by 1 time;

4. the front and back angles of the screw edges are not needed to be manually ground and the sharp angle is needed to be kept.

The invention brings the following benefits:

1) the customer is an international industry tap of the EVA adhesive film, has great influence, can radiate to various enterprises in the same industry, and invisibly improves the popularity of the applicant in the photovoltaic field;

2) the demand of customers is large, at present, the production project of 1.8 hundred million square timber EVA solar cell adhesive film produced in year begins to start gradually, and more than 500 sets of required equipment are needed;

3) the core value of the brand of the applicant is increased, the value is created for customers, and the core competitiveness of the company is improved.