TWI513509B - Helical blade - Google Patents

Description

Spiral blade

The invention relates to blades, and in particular to a spiral blade.

According to the general recycling operation, such as recycling waste plastic or recycling clothes, it will be crushed by the crusher first, then washed with water, the attached stains will be removed, and then dehydrated, and finally compressed and processed. Among them, the conventional dehydrator is often a step of performing extrusion dehydration using a screw and its spiral blade. Spiral blades as disclosed in TWM346599, TWM296787, etc. are such.

In such conventional assembly techniques, the screw used for dewatering pushes the waste plastic (or clothing) by its spiral blades, so that the water is squeezed out during the pushing process, and the waste plastic (or clothing) ) delivered to the discharge port. Usually, the discharge port is usually made into a smaller aperture size, so that the waste plastic (or clothing) will be compressed and pushed before discharge. However, the spiral blade facing the discharge end will receive a larger and more direct force. In the process of compressing waste plastics (or clothing), it will continuously rub with waste plastics (or clothing), so that the spiral blades here are extremely easy to wear out, often need to be replaced and increase the manufacturing cost, and there is a drawback that needs to be improved.

Therefore, it is necessary to provide a novel and progressive spiral blade to solve the above problems.

The main object of the present invention is to provide a spiral blade which can improve the wear resistance of the spiral blade thereby increasing its service life. In addition, when used for a period of time, only the wear-resistant component needs to be replaced, without replacing the new spiral blade, which can effectively save manufacturing cost and facilitate assembly.

In order to achieve the above object, the present invention provides a screw blade which is disposed on a push screw of a dewatering machine, and the push screw shaft is disposed in a sieve cylinder of the dewatering machine and is opposite to a discharge device. The spiral blade comprises: a blade body and a wear component. The blade body is spirally wound around an outer circumferential surface of the push screw, and the blade body has a spiral side surface facing the discharge device. The wear component is disposed at an end of the spiral side in the axial direction facing the wear component and in close proximity to the discharge device.

1‧‧‧Spiral blades

11‧‧‧Pushing screw

2‧‧‧ blade body

21‧‧‧Spiral side

211‧‧‧ 容 部

3‧‧‧Abrasion resistant components

32‧‧‧Abrasion parts

321‧‧‧ corner

322‧‧‧ outer surface

4‧‧‧Dewatering machine

41‧‧‧ sieve cylinder

42‧‧‧Drawing device

31‧‧‧ countersunk head screws

421‧‧‧Drainage channel

43‧‧‧Feeding device

1 is a perspective view of a preferred embodiment of the present invention.

2 is an exploded view of a preferred embodiment of the present invention.

3 is another perspective view of a preferred embodiment of the present invention.

4 is another exploded view of a preferred embodiment of the present invention.

Figure 5 is a side cross-sectional view of a preferred embodiment of the present invention.

Figure 6 is a partially enlarged side elevational cross-sectional view of a preferred embodiment of the present invention.

The following is a description of the possible embodiments of the present invention, and is not intended to limit the scope of the invention as claimed.

Please refer to FIG. 1 to FIG. 6, which illustrate a preferred embodiment of the present invention, and the present invention. The spiral blade 1 is disposed on a push screw 11 of a dewatering machine 4, and the push screw 11 is axially disposed in a sieve drum 41 of the dewatering machine 4 and opposite to a discharge device 42. The spiral blade 1 includes a blade body 2 and a wear-resistant component 3.

The blade body 2 is spirally wound around the outer peripheral surface of the push screw 11, and the blade body 2 has a spiral side surface 21 facing the discharge device 42. The wear-resistant component 3 is disposed at the end of the spiral side 21 in the axial direction, and the wear-resistant component 3 faces and is adjacent to the discharge device 42. When a material (for example, broken clothes, broken plastic) is subjected to a washing process, the stain adhered thereto is removed, and then enters the sieve drum 41 via a feeding device 43, and the pushing screw 11 is used The material is conveyed in the direction of the discharge device 42. The material is continuously pushed and tumbling by the at least one blade body 2 during the conveying process, thereby extruding the water and passing through the respective openings on the sieve drum 41. The water is discharged while the material is being continuously rubbed during the tumbling process, so that the water is removed from the material. In other words, the conveying process is also carried out by dehydration.

In this embodiment, the push screw 11 is detachably disposed adjacent to the end of the discharge device 42. The push screw 11 has two blade bodies 2, and the blade body 2 is disposed adjacent to the blade body 2 One end of the feeding device 43 and the other blade body 2 are attached to the detachable end of the pushing screw 11. The two blade bodies 2 are not connected to each other, so that a buffer section is formed between the two blade bodies 2, so that the material can be continuously accumulated in the buffer section first, when stacked to a preset amount. After that, the material is driven by each of the blade bodies 2 to continue forward, and the step of compressing and discharging is performed. In addition, it can be understood that the push screw 11 can also be designed as an integral non-detachable design, or in other embodiments the push screw 11 has one (or more) of the blade body 2, and is also unnecessary.

Due to the final step of compressing the discharge, as shown in Figures 5 and 6, it is usually The blade body 2 of the discharge device 42 is disposed near the end of the spiral body 21 on the blade body 2 in the axial direction to compress the material and the material is discharged therefrom. At least one of the discharge passages 421 of the material device 42 is pushed forward, so that the spiral side surface 21 receives a relatively direct and large force at the end in the axial direction, and thus is easily worn and damaged. In addition, when the blade body 2 near the discharge device 42 is rotationally compressed, the end of the spiral side surface 21 in the axial direction is also worn by the friction with the material, which reduces the service life. In order to avoid this, as shown in FIG. 2, a wear-resistant component 3 is disposed at the end of the spiral side 21 in the axial direction. It can be understood that the wear-resistant component 3 is viewed axially. The at least one discharge passage 421 of the discharge device 42 is disposed in the rotation path, thereby effectively improving the loss and improving the service life of the blade body 2. Preferably, as shown in FIG. The end of the spiral side surface 21 in the axial direction is a plane perpendicular to the axis of the pushing screw 11, which ensures that the wear-resistant component 3 can be averaged when pushing (or compressing) the material. The preferred force application surface avoids stress concentration during pushing (or compression), and the wear component 3 is damaged. In addition, as shown in FIG. 4 in the present embodiment, the other blade body 2 of the push screw 11 adjacent to one end of the feeding device 43 is provided with another one at the end of the spiral side surface 21 thereof. The wear-resistant component 3, when the buffer section has accumulated more material, can ensure that there is no loss in the process of continuously pushing the material into the buffer section. It can be understood that the user can decide which of the blade bodies 2 needs to be equipped with the wear-resistant component 3 according to the needs of use.

In more detail, a receiving portion 211 for receiving the wear-resistant component 3 is recessed at the end of the spiral side surface 21 in the axial direction, so that the wear-resistant component 3 can be combined with the receiving portion 211. And the wear-resistant component 3 does not exceed the leaf in the direction transverse to the axis of the push screw 11 The sheet body 2 can be processed and modified on the original blade body 2 without replacing the new product. Among them, the combination can be inlaid, welded, assembled, melted forged, etc., and is not limited. Preferably, when the wear-resistant component 3 is combined with the accommodating portion 211, an outer surface 322 of the wear-resistant component 3 protrudes toward the discharge device direction 42 from the spiral side surface 21 in the axial direction. At the end of the tube, the preferred amount of protrusion is in the range of 1 to 2 mm, so that the wear-resistant component 3 can have a more abundant wearable thickness without affecting the assembly size between components. It is of course also possible for the outer surface 322 to be in the same plane as the end of the spiral side 21 in the axial direction. More preferably, the wear-resistant component 3 is detachably coupled to the accommodating portion 211, and when the wear-resistant component 3 is worn to a certain extent, only the damaged wear-resistant component 3 can be replaced without replacing the entire wear-resistant component 3 The spiral blade 1 (or the push screw 11).

Please refer to FIG. 2 for further reference. The wear-resistant component 3 has a countersunk screw 31 and a wear-resistant member 32. The wear-resistant member 32 is detachably screwed to the receiving portion by the countersunk head screw 31. 211. Among them, the conventional blade system is generally made of a material called black iron, so the wear member 32 needs to have a wear-resistant and anti-wear property, such as tungsten steel, tungsten carbide, titanium carbide or a mixture thereof. Hard surface material. The two wear parts 32 in this embodiment are made of tungsten steel. Preferably, the wear-resistant member 32 has at least one corner portion 321 , and the at least one corner portion 321 does not abut against the receiving portion 211 . In the embodiment, the wear-resistant member 32 has a rectangular shape and thus has four corner portions 321 , and the receiving portion 211 has a concave arc corresponding to the four corner portions 321 not contacting the same. The four corner portions 321 are not easily broken. In detail, when the spiral blade 1 is pushed (or compressed) by the rotation, the four corner portions 321 can be prevented from colliding with the accommodating portion 211 due to the vibration relationship, so that the four corner portions 321 are broken. The situation happened.

In summary, the spiral blade of the present invention can effectively improve the resistance at the end of the spiral side Grinding (anti-wear) degree, because the end of the spiral side in the axial direction is compressed when the material is subjected to relatively direct force and directly rubs against the material, the wear resistance of the spiral blade is enhanced by providing wear-resistant components. Degree, increase its service life.

Moreover, the wear-resistant component can be detachably combined with the spiral blade. When the wear-resistant component is worn to a certain extent, only the wear-resistant component needs to be replaced, without replacing the entire spiral blade (or pushing screw).

In addition, it can be combined with the wear-resistant component by processing the accommodating portion of the original spiral blade, which is convenient and cost-effective.

In summary, the overall structural design, practicability and efficiency of the present invention are indeed fully in line with the needs of industrial development, and the disclosed structural invention is also an unprecedented innovative structure, so it has "novelty" should Undoubtedly, the invention can be more effective than the conventional structure, and therefore has "progressiveness", which fully complies with the requirements of the application requirements of the invention patents of the Chinese Patent Law, and is filed according to law, and please The bureau will review it early and give it affirmation.

1‧‧‧Spiral blades

2‧‧‧ blade body

21‧‧‧Spiral side

211‧‧‧ 容 部

3‧‧‧Abrasion resistant components

31‧‧‧ countersunk head screws

32‧‧‧Abrasion parts

Claims (9)

A spiral blade is provided in a push screw of a dewatering machine, the push screw shaft is disposed in one of the dewatering machine and opposite to a discharge device, the spiral blade comprises: a blade body spirally wound around an outer circumferential surface of the push screw, the blade body having a spiral side facing the discharge device; and a wear-resistant assembly disposed at an end of the spiral side in the axial direction The wear resistant component faces and is adjacent to the discharge device. The spiral blade according to claim 1, wherein the end of the spiral side is recessed at an end in the axial direction to receive a receiving portion of the wear-resistant component, and the wear-resistant component is combined with the receiving portion; In an axial view, the wear-resistant component corresponds to at least one discharge passage of the discharge device in a rotating path thereof, and the wear-resistant assembly does not extend beyond the blade body in a direction transverse to the axis of the push screw. The spiral blade of claim 2, wherein the wear component is detachably coupled to the receiving portion. The spiral blade according to claim 2, wherein the wear-resistant component has a countersunk screw and a wear-resistant member, and the wear-resistant member is detachably screwed to the receiving portion by the countersunk screw. The spiral blade according to claim 2, wherein the wear-resistant component has a wear-resistant member, the wear-resistant member having at least one corner portion, the at least one corner portion not abutting against the receiving portion. The spiral blade according to claim 1, wherein the wear-resistant component has a wear-resistant member, and the wear-resistant member is made of a tungsten steel material. The spiral blade according to claim 1, wherein the end of the spiral side in the axial direction is a plane perpendicular to the axis of the pushing screw. The spiral blade according to any one of claims 2 to 5, wherein the wear-resistant component and the volume When the portions are combined, the outer surface of one of the wear-resistant components is located in the same plane as the end of the spiral side in the axial direction. The spiral blade according to any one of claims 2 to 5, wherein when the wear-resistant component is combined with the accommodating portion, an outer surface of the wear-resistant component protrudes toward the discharge device The spiral side is 1 to 2 mm at the end in the axial direction.