CN217293448U

CN217293448U - Wear-resistant screw of double-screw extruder

Info

Publication number: CN217293448U
Application number: CN202221187422.0U
Authority: CN
Inventors: 姚朝升; 徐恩
Original assignee: Zhoushan Demaji Industrial Co ltd
Current assignee: Zhoushan Demaji Industrial Co ltd
Priority date: 2022-05-18
Filing date: 2022-05-18
Publication date: 2022-08-26
Anticipated expiration: 2032-05-18

Abstract

The utility model relates to a screw rod technical field's a double screw extruder's wear-resisting screw rod, including the base pole, first screw thread strip, second screw thread strip, third screw thread strip and fourth screw thread strip are installed respectively to the surface of base pole, and just first screw thread strip and second screw thread strip install respectively at the both ends of base pole, fourth screw thread strip is located the middle surface of base pole, third screw thread strip is equipped with two sets ofly altogether, is located the both ends of base pole respectively, first screw thread strip and second screw thread strip are spiral form by big to little, the both ends of fourth screw thread strip link up with the less one end of first screw thread strip and second screw thread strip respectively. Through setting up first thread strip, second thread strip, third thread strip, the fourth thread strip of base pole surface, can make the base pole can two poles extrusion material when using, make the material fully move the extrusion at the surface of base pole, and the third thread strip and the fourth thread strip position at both ends are different, can make the material receive the difference when being extruded and roll.

Description

Wear-resistant screw of double-screw extruder

Technical Field

The utility model relates to a screw rod technical field especially relates to a double screw extruder's wear-resisting screw rod.

Background

The outer surface of the screw rod is cut with a cylinder with a spiral groove or a cone with a conical spiral groove, and the screw rod is provided with different heads, a hexagonal screw rod, a large flat screw rod, an inner hexagonal screw and the like.

The screw in the existing extruder is an important part, the abrasion of the screw easily causes the gradual failure of the operation of the extruder, in the process of extruding materials, the materials and the surface of the screw are subjected to frictional abrasion to increase the clearance between the screw and a machine barrel, the leakage flow rate of the extruded materials during advancing is increased, the normal work of the twin-screw extruder is influenced, and even the surface of a screw element is seriously abraded to cause the screw to be unusable, so that the wear-resistant screw of the twin-screw extruder is provided.

Disclosure of Invention

To the problem, the utility model provides a double screw extruder's wear-resisting screw rod has reinforcing surface abrasion and is convenient for crowded effect of material.

The technical scheme of the utility model is that:

the utility model provides a double screw extruder's wear-resisting screw rod, includes the base pole, first screw thread strip, second screw thread strip, third screw thread strip and fourth screw thread strip are installed respectively to the surface of base pole, and just first screw thread strip and second screw thread strip install respectively at the both ends of base pole, fourth screw thread strip is located the middle surface of base pole, third screw thread strip is equipped with two sets ofly altogether, is located the both ends of base pole respectively.

In a further technical scheme, the first thread strip and the second thread strip are both in a spiral shape from large to small, and two ends of the fourth thread strip are respectively connected with one smaller end of the first thread strip and one smaller end of the second thread strip.

In a further technical scheme, the base rod consists of two connecting rods and a fixing rod, the fixing rod is located in the middle, and reinforcing steel is fixedly installed at the center of the inside of the base rod.

In a further technical scheme, the surface of the base rod is completely covered with an alloy coating, the alloy coating is a self-fluxing alloy, and the surface roughness of the alloy coating is not higher than 0.2 micrometer.

In a further technical scheme, the third thread strips are distributed strip-shaped and are arranged on the outer surface of the connecting rod in a spiral arrangement mode.

In a further technical scheme, the depth between the outer surface of the fourth threaded strip and the base rod is smaller, and the depth between the outer surface of the second threaded strip and the base rod is decreased from large to small.

The utility model has the advantages that:

1. the first thread strip, the second thread strip, the third thread strip and the fourth thread strip are arranged on the outer surface of the base rod, so that the base rod can extrude materials through double rods when in use, the materials are fully moved and extruded on the outer surface of the base rod, and the third thread strip and the fourth thread strip at the two ends are different in position, so that the materials can be rolled differently when being extruded;

2. through setting up first screw thread strip and second screw thread strip and being spiral by big little form, can make the material increase in the through rate by the extrusion, fully stir garrulous material, then the both ends of fourth screw thread strip link up with the less one end of first screw thread strip and second screw thread strip respectively mutually, can be by meticulous crowded garrulous when the material gets into fourth screw thread strip behind first screw thread strip.

Drawings

FIG. 1 is a front view of the embodiment of the present invention;

fig. 2 is a schematic structural diagram of a rear view of the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a side view section of an embodiment of the present invention;

fig. 4 is a schematic structural diagram of the top view of the embodiment of the present invention.

Description of the reference numerals:

1. a base shaft; 2. fixing the rod; 3. a connecting rod; 4. a first threaded strip; 5. a second threaded strip; 6. a third thread strip; 7. a fourth thread strip.

Detailed Description

The embodiments of the present invention will be further explained with reference to the drawings.

Example (b):

as shown in fig. 1-4, a wear-resistant screw of a twin-screw extruder comprises a base rod 1, wherein a first thread strip 4, a second thread strip 5, a third thread strip 6 and a fourth thread strip 7 are respectively installed on the outer surface of the base rod 1, the first thread strip 4 and the second thread strip 5 are respectively installed at two ends of the base rod 1, the fourth thread strip 7 is located on the outer surface of the middle of the base rod 1, and the third thread strips 6 are respectively located at two ends of the base rod 1.

The working principle of the above technical scheme is as follows:

when the base rod 1 is used, the material extruding position of the extruder is used, when the two base rods 1 rotate simultaneously, materials are stirred between the two base rods 1 and are extruded by the double rods through the third thread strips 6, so that the materials are crushed firstly, the first thread strips 4 are stirred immediately and conveniently, then the materials are conveyed to the fourth thread strips 7, the materials are crushed on the surfaces of the fourth thread strips 7 through the fourth thread strips 7 on the surfaces of the two base rods 1, meanwhile, the materials are conveyed forwards continuously until the materials are conveyed to the second thread strips 5, and finally, the materials are extruded and discharged, when the second thread strips 5 are extruded again, the crushed materials are extruded again, and then the materials are extruded by the other third thread strips 6 for one time to ensure the discharging quality.

In another embodiment, as shown in fig. 1 and 3, the first threaded strip 4 and the second threaded strip 5 are both spiral from large to small, and two ends of the fourth threaded strip 7 are respectively connected with one smaller end of the first threaded strip 4 and the second threaded strip 5.

The great material of extrusion of being convenient for, at first the material advances fourth screw thread strip 7 through first screw thread strip 4, and at this moment the material can be extruded earlier for a short time, then is stirred the bits of broken glass repeatedly by fourth screw thread strip 7 again, and then extrudees the bits of broken glass through second screw thread strip 5 during the ejection of compact again, and the macroseed can be extruded to big one end through the little one end of second screw thread strip 5 spiral once more.

In another embodiment, as shown in fig. 1, the base shaft 1 is composed of two connecting rods 3 and one fixing rod 2, and the fixing rod 2 is located in the middle, and a reinforcing steel is fixedly installed at the inner center of the base shaft 1.

The toughness of the base rod 1 is increased, and the torsional strength during rotation is increased.

In another embodiment, as shown in fig. 1, the entire surface of the base rod 1 is covered with the alloy coating, the alloy coating is a self-fluxing alloy, and the surface roughness of the alloy coating is not higher than 0.2 μm.

Increasing the wear resistance of the surface.

In another embodiment, as shown in fig. 1, 2 and 4, the third threaded bars 6 are distributed bars and are spirally arranged on the outer surface of the connecting rod 3.

So as to be convenient for preferentially crushing large materials and conveying the large materials to the middle part of the base rod 1.

In another embodiment, as shown in fig. 3 and 4, the depth between the outer surface of the fourth thread strip 7 and the base shaft 1 is smaller, and the depth between the outer surface of the second thread strip 5 and the base shaft 1 is gradually smaller.

The progressive grinding materials are convenient, and the base rod 1 is prevented from being damaged too fast.

The above embodiments only express the specific embodiments of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. A wear-resistant screw of a twin-screw extruder, comprising a base rod (1), characterized in that: the utility model discloses a basic rod, including base rod (1), first screw thread strip (4), second screw thread strip (5), third screw thread strip (6) and fourth screw thread strip (7) are installed respectively to the surface of base rod (1), and install respectively at the both ends of base rod (1) first screw thread strip (4) and second screw thread strip (5), fourth screw thread strip (7) are located the middle surface of base rod (1), third screw thread strip (6) are equipped with two sets ofly altogether, are located the both ends of base rod (1) respectively.

2. The wear-resistant screw of a twin-screw extruder as claimed in claim 1, wherein: first thread strip (4) and second thread strip (5) are spiral form from big to little, the both ends of fourth thread strip (7) link up with the less one end of first thread strip (4) and second thread strip (5) respectively.

3. The wear-resistant screw of a twin-screw extruder as claimed in claim 1, wherein: the base rod (1) is composed of two connecting rods (3) and a fixing rod (2), the fixing rod (2) is located in the middle, and reinforcing steel is fixedly installed at the center of the interior of the base rod (1).

4. The wear-resistant screw of a twin-screw extruder as claimed in claim 1, wherein: the surface of the base rod (1) is completely covered with an alloy coating, the alloy coating is a self-fluxing alloy, and the surface roughness of the alloy coating is not higher than 0.2 micrometer.

5. The wear-resistant screw of a twin-screw extruder as claimed in claim 1, wherein: the third thread strips (6) are distributed strip-shaped and are arranged on the outer surface of the connecting rod (3) in a spiral arrangement mode.

6. The wear-resistant screw of a twin-screw extruder as claimed in claim 1, wherein: the depth between the outer surface of the fourth threaded strip (7) and the base rod (1) is small, and the depth between the outer surface of the second threaded strip (5) and the base rod (1) is from large to small.