阅读说明：本技术 便于更换螺纹元件的异向平行双螺杆挤出机用螺杆 (Screw rod for counter-rotating parallel double-screw extruder convenient for replacing thread element ) 是由 李哲 李贝茜 石磊 于 2019-10-12 设计创作，主要内容包括：本发明公开了便于更换螺纹元件的异向平行双螺杆挤出机用螺杆,包括：机筒；芯轴,所述芯轴共设置两个,两个所述芯轴均安装于所述机筒的内部；螺纹元件总成,所述螺纹元件总成套接于所述芯轴的外侧壁；杆头,所述杆头卡接于所述芯轴的一端；本发明螺杆内部由一根通长的芯轴,外部套接螺纹元件总成,螺纹元件总成中的每个螺纹元件为一个导程,这样哪段易磨损就更换哪段螺纹元件,不需整体进行更换,能极大的减少使用维护成本,同时本发明的两根芯轴中心距为110mm,直径136-138mm,螺旋槽深产生的剪切啮合效果更好,吃料更多。(The invention discloses a screw rod for a counter-rotating parallel double-screw extruder, which is convenient for replacing threaded elements, and comprises a machine barrel, two mandrels, a threaded element assembly and a rod head, wherein the two mandrels are arranged in the machine barrel, the threaded element assembly is sleeved on the outer side wall of the mandrel, the rod head is clamped at the end of the mandrel, the threaded element assembly is sleeved outside the machine barrel through mandrels, each threaded element in the threaded element assembly is leads, so that the threaded element at which section is easy to wear is replaced without being integrally replaced, the use and maintenance cost can be greatly reduced, meanwhile, the center distance between the two mandrels is 110mm, the diameter is 136 mm and 138mm, the shearing meshing effect generated by the depth of a spiral groove is better, and more materials are eaten.)

1. Screw rod for incorgruous parallel double screw extruder convenient to change screw element, its characterized in that: the method comprises the following steps: a cylinder (4);

the two mandrels (1) are arranged, and the two mandrels (1) are arranged in the machine barrel (4);

the threaded element assembly (2), the threaded element assembly (2) is sleeved on the outer side wall of the mandrel (1);

the club head (3), club head (3) joint in the end of dabber (1).

2. A screw for a counter-rotating parallel twin-screw extruder, which facilitates the replacement of screw elements, according to claim 1, characterized in that said screw element assembly (2) comprises th screw elements (21), second screw elements (22), third screw elements (23), fourth screw elements (24), fifth screw elements (25), sixth screw elements (26), seventh screw elements (27) and eighth screw elements (28).

3. A screw for a counter-rotating parallel twin-screw extruder with easy replacement of screw elements according to claim 2, wherein spiral grooves are formed on the th screw element (21), the second screw element (22), the third screw element (23), the fourth screw element (24), the fifth screw element (25), the sixth screw element (26), the seventh screw element (27) and the eighth screw element (28).

4. Screw for a counter-rotating parallel twin-screw extruder, with easy replacement of screw elements, according to claim 2, characterised in that the transverse lengths of the second (22), fourth (24) and fifth (25) screw elements are the same, the transverse length of the third screw element (23) is greater than the transverse length of the second screw element (22), the transverse length of the sixth screw element (26) is greater than the transverse length of the third screw element (23), the transverse lengths of the (21) and seventh (27) screw elements are the same, the transverse length of the (21) screw element is greater than the transverse length of the sixth screw element (26), and the transverse length of the eighth screw element (28) is greater than the transverse length of the screw element (21).

5. The screw for a counter-rotating parallel twin-screw extruder facilitating the replacement of screw elements according to claim 1, wherein: the center distance between the two mandrels (1) is 110mm, and the diameter of the mandrel (1) is 136 mm and 138 mm.

6. A screw for a counter-rotating parallel twin-screw extruder with easy replacement of screw elements according to claim 1, wherein said rod head (3) comprises a second link (31) and a stopper (32), said second link (31) has its end fixedly connected to said rod head (3), and said second link (31) has its other end fixedly connected to said stopper (32).

7. The screw for a counter-rotating parallel twin-screw extruder facilitating the replacement of screw elements according to claim 6, wherein: the block (32) is of a cone-shaped structure.

8. A screw for a counter-rotating parallel twin-screw extruder with easy replacement of screw elements according to claim 6, wherein the end of the mandrel (1) remote from the second connecting rod (31) is fixedly connected with a connecting rod (11).

9. The screw for a counter-rotating parallel twin-screw extruder facilitating the replacement of screw elements according to claim 1, wherein: the thread directions of the two thread element assemblies (2) are opposite.

Technical Field

The invention belongs to the technical field of floor processing machinery, and particularly relates to a screw for a counter-rotating parallel double-screw extruder, which is convenient for replacing a threaded element.

Background

The LVT plastic floor and the SPC floor are types of PVC floors, the main raw materials of the LVT plastic floor and the SPC floor are polyvinyl chloride, wood powder, calcium powder and the like, the PVC floor is light, thin, wear-resistant, good in elasticity, fireproof, flame-retardant, water-absorbing, moisture-proof, sound-absorbing and noise-preventing, and particularly simple, convenient and pollution-free in installation.

The production process of floor board includes shearing and meshing the material with screw in the extruder barrel at high temperature and vacuum pressure to form paste, hot die setting and extruding into sheet, hot calender forming while covering layers of film to imitate marble or wooden grains on the surface and the bast grain for adhering glue on the back as the base material, coating UV paint to form wear-resisting protecting treatment, cutting the base material in sheet and packing.

The working efficiency, the service life and the plasticizing condition of the screw in the barrel of the extruder directly determine the quality and the yield of the product. Most of the existing extruders in the market are 92/188 counter-rotating conical twin-screw extruders and 110/220 counter-rotating conical twin-screw extruders, or 115 counter-rotating parallel twin-screw extruders, 130 counter-rotating parallel twin-screw extruders and 135 counter-rotating parallel twin-screw extruders.

The conical twin or flat twin extruder has limited output, the maximum screw center distance of the 135 different-direction parallel twin-screw extruder is 110mm, the length-diameter ratio of the screw is 28:1, the output is 40 tons/day, the rest output is smaller, the raw materials contain a large amount of calcium powder (calcium carbonate), so the raw materials have high hardness, the screw is easy to wear, the screw needs to be replaced within 3-6 months, the cost is too high, medium and small floor enterprises cannot afford to bear the burden at all, the existing screws on the market are integrally processed, and the screws need to be replaced after is damaged, therefore, the screw for the different-direction parallel twin-screw extruder is convenient for replacing screw elements.

Disclosure of Invention

The invention aims to provide a screw for a counter-rotating parallel twin-screw extruder, which is convenient for replacing a thread element, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the following technical scheme:

screw rod for parallel double screw extruder of incorgruous direction convenient to change screw element includes: a barrel;

the two mandrels are arranged, and both the two mandrels are arranged in the machine barrel;

the threaded element assembly is sleeved on the outer side wall of the mandrel;

the rod head is clamped at the end of the mandrel.

Preferably, the threaded element assembly includes an th threaded element, a second threaded element, a third threaded element, a fourth threaded element, a fifth threaded element, a sixth threaded element, a seventh threaded element, and an eighth threaded element.

Preferably, the th, second, third, fourth, fifth, sixth, seventh and eighth threaded elements are provided with helical grooves.

Preferably, the transverse lengths of the second, fourth and fifth threaded elements are the same, the transverse length of the third threaded element is greater than the transverse length of the second threaded element, the transverse length of the sixth threaded element is greater than the transverse length of the third threaded element, the transverse lengths of the th and seventh threaded elements are the same, the transverse length of the th threaded element is greater than the transverse length of the sixth threaded element, and the transverse length of the eighth threaded element is greater than the transverse length of the th threaded element.

Preferably: the center distance between the two mandrels is 110mm, and the diameter of the mandrels is 136 mm and 138 mm.

Preferably, the club head comprises a second connecting rod and a stop block, wherein the end of the second connecting rod is fixedly connected with the club head, and the other end of the second connecting rod is fixedly connected with the stop block.

Preferably: the block is a cone-shaped structure.

Preferably, a th connecting rod is fixedly connected with the mandrel away from the end of the second connecting rod.

Preferably: the thread directions of the two thread element assemblies are opposite.

Compared with the prior art, the screw for the counter-rotating parallel double-screw extruder, which is convenient for replacing the thread element, provided by the invention has the following advantages:

mandrels with full length are arranged inside the screw, a threaded element assembly is sleeved outside the screw, each threaded element in the threaded element assembly is leads, so that any section of the threaded element is easy to wear and can be replaced without being integrally replaced, the use and maintenance cost can be greatly reduced, meanwhile, the center distance between the two mandrels is 110mm, the diameter is 136 mm and 138mm, the shearing meshing effect generated by the depth of a spiral groove is better, and more material is consumed.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a view of the connection of the mandrel to the barrel of the present invention;

FIG. 3 is a schematic view of the threaded element assembly of the present invention shown in disassembled configuration;

FIG. 4 is a schematic structural view of the head of the present invention.

In the figure, 1 is a mandrel, 11 is a th connecting rod, 2 is a threaded element assembly, 21 is a th threaded element, 22 is a second threaded element, 23 is a third threaded element, 24 is a fourth threaded element, 25 is a fifth threaded element, 26 is a sixth threaded element, 27 is a seventh threaded element, 28 is an eighth threaded element, 3 is a rod head, 31 is a second connecting rod, 32 is a stop block, and 4 is a barrel.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is to be understood that the described embodiments are only partial embodiments , rather than complete embodiments.

The invention provides a screw for a counter-rotating parallel twin-screw extruder, as shown in fig. 1 to 4, which facilitates the replacement of screw elements, comprising: barrel 4;

the two mandrels 1 are arranged, and the two mandrels 1 are both arranged in the machine barrel 4;

the threaded element assembly 2 is sleeved on the outer side wall of the mandrel 1;

the club head 3 is clamped at the end of the mandrel 1.

Preferably, the threaded element assembly 2 comprises an th threaded element 21, a second threaded element 22, a third threaded element 23, a fourth threaded element 24, a fifth threaded element 25, a sixth threaded element 26, a seventh threaded element 27 and an eighth threaded element 28.

By adopting the technical scheme, the threaded element assembly 2 consists of the th threaded element 21, the second threaded element 22, the third threaded element 23, the fourth threaded element 24, the fifth threaded element 25, the sixth threaded element 26, the seventh threaded element 27 and the eighth threaded element 28, is arranged into a single individual, is convenient to make replacement according to different damaged elements when damaged, and is beneficial to recycling of resources.

Preferably, the th, the second, the third, the fourth, the fifth, the sixth, the seventh and the eighth threaded elements 21, 22, 23, 24, 25, 26, 27 and 28 are provided with helical grooves.

Through adopting above-mentioned technical scheme, set up the helicla flute, the shearing meshing effect that the helical flute deep produced is better, eats the material more.

Preferably, the transverse lengths of the second threaded element 22, the fourth threaded element 24 and the fifth threaded element 25 are the same, the transverse length of the third threaded element 23 is greater than the transverse length of the second threaded element 22, the transverse length of the sixth threaded element 26 is greater than the transverse length of the third threaded element 23, the transverse lengths of the threaded element 21 and the seventh threaded element 27 are the same, the transverse length of the threaded element 21 is greater than the transverse length of the sixth threaded element 26, and the transverse length of the eighth threaded element 28 is greater than the transverse length of the threaded element 21.

By adopting the technical scheme, the positions of the th threaded element 21, the second threaded element 22, the third threaded element 23, the fourth threaded element 24, the fifth threaded element 25, the sixth threaded element 26, the seventh threaded element 27 and the eighth threaded element 28 can be exchanged, different numbers can be selected, the mandrel can be suitable for different mandrels 1 according to different lengths of the mandrels 1, and the optimal combination can be achieved by adjusting according to actual conditions.

Preferably: the center distance between the two mandrels 1 is 110mm, and the diameter of the mandrel 1 is 136 mm and 138 mm.

By adopting the technical scheme, the extruder can be used on an extruder with the output of 60 tons/day.

Preferably, the club head 3 comprises a second link 31 and a stopper 32, wherein an end of the second link 31 is fixedly connected with the club head 3, and the other end of the second link 31 is fixedly connected with the stopper 32.

By adopting the above technical solution, the second connecting rod 31 is used for connecting the stopper 32 and the mandrel 1, and the stopper 32 is used for matching the threaded element again for discharging.

Preferably: the stop 32 is a pyramid-like structure.

Through adopting above-mentioned technical scheme, cooperation screw element that can be better carries out the ejection of compact.

Preferably, the end of the mandrel 1 far away from the second link 31 is fixedly connected with a link 11.

Through adopting above-mentioned technical scheme, connecting rod 11 is used for connecting the output of reducing gear box to drive the screw rod and rotate.

Preferably: the thread directions of the two thread element assemblies 2 are opposite.

In this embodiment: the length-diameter ratio of the screw is 30-35: 1.

The working principle is that through long mandrels 1 are arranged inside the screw, the threaded element assembly 2 is sleeved outside the screw, each threaded element in the threaded element assembly 2 is leads, so that any section of the threaded element is easy to wear and can be replaced without being integrally replaced, the use and maintenance cost can be greatly reduced, meanwhile, the center distance between the two mandrels 1 is 110mm, the diameter is 136 mm and 138mm, the shearing and meshing effect generated by the depth of the spiral groove is better, the material consumption is more, and the yield can reach 60 tons/day.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.