A machine with replaceable parts for processing oil palm tree products

Abstract

The present invention relates to a machine with replaceable parts for processing oil palm tree products. More specifically, it relates to a machine with replaceable parts for cutting, crushing, milling, grinding, or shredding oil palm tree products such as oil palm fruits in the form of fresh fruit bunches. The machine comprises a motor (100); a gearbox (200) connected to the motor (100); a coupling means (300) connected to the gearbox (200); a bearing system (400) connected to the coupling means (300); and a processing means (500) connected to the bearing system (400), wherein the processing means (500) further comprises an inlet (501) for receiving the oil palm tree products; at least one outlet (502) for dispensing processed oil palm tree products; a housing (503) that further comprises a cylindrical shaped horizontal bore (504); a hollow cylinder (506) that further comprises an inner wall and an outer wall, which is horizontally positioned within the housing (503) and in contact with a surface of the horizontal bore (504) of the housing (503); and a worm screw that is connected to the bearing system (400), which is horizontally positioned along the centre of the processing means (500) and spanning along the entire length of the processing means (500). Additionally, the surface of the horizontal bore (504) of the housing (503) comprises at least one tongue feature (505); and the outer wall of the hollow cylinder (506) comprises at least one groove feature (507) that complements the tongue feature (505) of the surface of the horizontal bore (504) of the housing (503).

Description

[0001] A MACHINE WITH REPLACEABLE PARTS FOR PROCESSING OIL PALM TREE PRODUCTS

[0002] FIELD OF THE INVENTION

[0003] This invention relates to a machine with replaceable parts for processing oil palm tree products, and more particularly to a machine with replaceable parts for cutting, crushing, milling, grinding, or shredding oil palm tree products.

[0004] BACKGROUND OF THE INVENTION

[0005] The oil palm industry, often hailed as the green gold, has been a cornerstone of the global agricultural landscape for decades. This versatile crop, primarily cultivated for its highly prized oil, has found its way into countless consumer products worldwide. However, the road to sustainable palm oil production is fraught with challenges, and one of the most pressing issues is the wear and tear inflicted upon heavy-duty machines used to process the oil pam tree products, such as to crush oil palm fruits, empty fruit bunches, and other products of oil palm trees. This critical flaw in the current practices not only jeopardizes the efficiency of the industry but also poses a significant environmental concern.

[0006] In the heart of oil palm plantations, colossal machines stand as the unsung heroes of the industry, tirelessly processing the oil palm tree products. These heavy-duty machines, often consisting of crushers, shredders, extractors, and the others, play a pivotal role in extracting palm oil efficiently from the fruit's flesh and separating it from the fibrous empty fruit bunches. However, in the relentless pursuit of higher yields and economic gains, the palm oil industry has inadvertently created a detrimental side effect - the rapid wear and tear of these essential machines.

[0007] Wear and tear, a persistent problem that plagues this industry, is the result of the relentless demand placed on the machines by the continuous processing of oil palm tree products. The process involves an unending cycle of crushing, extracting, and refining, and the wear and tear on these heavy-duty machines is inevitable. This continuous operation, combined with the abrasive nature of the oil palm fruit and the harsh conditions of tropical climates, contributes to the premature degradation of the machines. The consequences are not limited to economic losses incurred through machine maintenance, repairs, and replacements; the environmental ramifications are equally significant.

[0008] As these heavy-duty machines wear down, the industry faces several adverse outcomes. Firstly, the production efficiency of palm oil extraction is compromised, leading to reduced output and lower profit margins. Secondly, the environmental impact is profound. The increased wear and tear necessitate more frequent repairs, leading to higher energy consumption and elevated greenhouse gas emissions. The growing need for machine replacements contributes to additional resource depletion and waste generation, further exacerbating the environmental footprint of the industry.

[0009] The palm oil industry stands at a crossroads, where it must balance the ever- increasing global demand for palm oil with a growing awareness of sustainability and environmental responsibility. To address this critical flaw in the processing of oil palm tree products, there is an urgent need to develop innovative solutions that can mitigate wear and tear while maintaining efficiency.

[0010] Therefore, the aim of the present invention is to disclose a machine with replaceable parts for processing oil palm tree product, which will solve the issues as discussed above.

[0011] SUMMARY OF INVENTION

[0012] It is an objective of the present invention to present a machine that is used to processed oil palm tree products. Specifically, the machine is employed to cut, crush, mill, grind, or shred oil palm tree products such as palm oil fruits in the form of fresh fruit bunches, including any by-products of oil palm tree such as empty fruit bunches, kernels, and fibres. It is another objective of the present invention to present a machine as described above, where its wear and tear parts can be replaced in an easy manner.

[0013] Accordingly, these objectives can be achieved by the following disclosures.

[0014] The machine of the present invention comprises a motor; a gearbox connected to the motor; a coupling means connected to the gearbox; a bearing system connected to the coupling means; and a processing means connected to the bearing system.

[0015] The processing means comprises an inlet for receiving the oil palm tree products; at least one outlet for dispensing processed oil palm tree products; at least one housing that further comprises a cylindrical shaped horizontal bore; at least one hollow cylinder that further comprises an inner wall and an outer wall, which is horizontally positioned within the housing and in contact with a surface of the horizontal bore of the housing; and a worm screw that is connected to the bearing system, which is horizontally positioned along the centre of the processing means and spanning along the entire length of the processing means.

[0016] Further, the surface of the horizontal bore of the housing comprises at least one tongue feature. In another preferred embodiment of the present invention, the surface of the horizontal bore of the housing comprises two tongue features.

[0017] In an embodiment of the present invention, the tongue feature spans along the entire length of the surface of the horizontal bore of the housing.

[0018] In another embodiment of the present invention, the tongue feature spans along part of the length of the surface of the horizontal bore of the housing.

[0019] In yet another embodiment of the present invention, the tongue feature of the surface of the horizontal bore of the housing is a square tongue, a rectangular tongue, a U-shaped tongue, or the likes. Additionally, the outer wall of the hollow cylinder comprises at least one groove feature that complements the tongue feature of the surface of the horizontal bore of the housing. In a preferred embodiment of the present invention, the outer wall of the hollow cylinder comprises two groove features.

[0020] In an embodiment of the present invention, the groove feature spans along the entire length of the outer wall of the hollow cylinder.

[0021] In another embodiment of the present invention, the groove feature spans along part of the length of the outer wall of the hollow cylinder.

[0022] In yet another embodiment of the present invention, the groove feature of the outer wall of the hollow cylinder is a square groove, a rectangular groove, a U-shaped groove, or the likes.

[0023] The position of the hollow cylinder is stationary and securely fixed within the housing due to the complement pairing of the tongue feature of the surface of the horizontal bore of the housing and the groove feature of the outer wall of the hollow cylinder.

[0024] Although the position of the hollow cylinder is stationary and securely fixed within the housing, the hollow cylinder can be easily removed via a horizontal sliding movement which is made possible due to the groove feature and the tongue feature.

[0025] Once removed, a new hollow cylinder can be easily installed via the same sliding movement. The groove feature of the outer wall of the hollow cylinder is positioned to match and align with the tongue feature of the surface of the horizontal bore of the housing, and thereafter the hollow cylinder is pushed into the housing, where the horizontal sliding movement is guided by the complementing groove feature and tongue feature. Therefore, the hollow cylinder is highly secured within the housing and yet not permanently attached to the housing. Consequently, the worn and torn hollow cylinder can be removed and replaced with a new one effortlessly.

[0026] BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The features of the invention will be more readily understood and appreciated from the following detailed description when read in conjunction with the accompanying drawings of the preferred embodiment of the present invention, in which:

[0028] Figure 1 is a side view of the machine of the present invention;

[0029] Figure 2 is a perspective view of the housing that comprises a cylindrical shaped horizontal bore, and the tongue feature;

[0030] Figure 3 is a perspective view of the hollow cylinder comprises the groove feature on the outer wall;

[0031] Figure 4 shows the matching alignment of the tongue feature on the surface of the horizontal bore of the housing with the groove feature on the outer wall of the hollow cylinder; and

[0032] Figure 5 shows the stationary position of the hollow cylinder securely fixed within the housing, and in contact with the surface of the horizontal bore of the housing.

[0033] DETAILED DESCRIPTION OF THE INVENTION

[0034] The above mentioned and other features and objects of this invention will become more apparent and better understood by reference to the following detailed description. The detailed description made known below is not intended to be exhaustive or limit the invention to the precise disclosed form as the invention may assume various alternative forms. On the contrary, the detailed description covers all the relevant modifications and alterations made to the present invention, unless the claims expressly state otherwise.

[0035] A machine for processing oil palm tree products will be disclosed herein.

[0036] The term “processing” used throughout the specification means cutting, crushing, milling, grinding, or shredding.

[0037] The term “oil palm tree products” used throughout the specification means oil palm fruits in the form of fresh fruit bunches, including any by-products of oil palm tree such as empty fruit bunches, kernels, and fibres.

[0038] Therefore, the machine of the present invention is employed for cutting, crushing, milling, grinding, or shredding oil palm fruits in the form of fresh fruit bunches, including any by-products of oil palm tree such as empty fruit bunches, kernels, and fibres.

[0039] However, the machine of the present invention may also be used to process other products such as coconuts.

[0040] We now refer to Figure 1.

[0041] The machine of the present invention comprises a motor (100); a gearbox (200) connected to the motor (100); a coupling means (300) connected to the gearbox (200); a bearing system (400) connected to the coupling means (300); and a processing means (500) connected to the bearing system (400).

[0042] In an embodiment of the present invention, the bearing system (400) comprises at least one ball bearing. In a preferred embodiment of the present invention, the bearing system (400) comprises three ball bearings. In another preferred embodiment of the present invention, the bearing system (400) comprises five ball bearings. The processing means (500) comprises an inlet (501) for receiving the oil palm tree products; at least one outlet (502) for dispensing processed oil palm tree products; at least one housing (503) that further comprises a cylindrical shaped horizontal bore (504) (refer to Figure 2); at least one hollow cylinder (506) that further comprises an inner wall and an outer (refer to Figure 3), which is horizontally positioned within the housing (503) and in contact with a surface of the horizontal bore (504) of the housing (503) (refer to Figure 5); and a worm screw that is connected to the bearing system (400), which is horizontally positioned along the centre of the processing means (500) and spanning along the entire length of the processing means (500).

[0043] The processing means (500) may comprise more than one outlet (502). In an embodiment of the present invention, the processing means (500) comprises a first outlet (502) and a second outlet (not shown), wherein the first outlet (502) is situated at a back end of the processing means (500), and the second outlet (not shown) is situated at a bottom part of the processing means (500), spanning along the entire length of the processing means (500). Typically, the second outlet (not shown) is employed to collect processed oil palm tree products that are in the form of liquid such as crude palm oil and palm kernel oil.

[0044] In an embodiment of the present invention, the processing means (500) may comprise more than one housing (503) and more than one hollow cylinder (506).

[0045] We now referred to Figure 1. In a first example, the processing means (500) comprises two housing (503) and two hollow cylinders (506) positioned within the housing (503), respectively. The two housings (503) are connected to each other and secured in position with bolts and nuts or the likes.

[0046] For a second example, the processing means (500) comprises three housings (503) and three hollow cylinders (506) positioned within the housings (503), respectively. The three housings (503) are connected to each other and secured in position with bolts and nuts or the likes. We now refer to Figure 3, and the inner wall of the hollow cylinder (506), which comprises additional features.

[0047] In an embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506).

[0048] In another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506).

[0049] In yet another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508). The threaded feature (508) can be in a clockwise manner or anti-clockwise manner.

[0050] In another embodiment of the present invention, the inner wall of the hollow cylinder (506) is rough.

[0051] In an additional embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of semi sphere shaped components (509) that are evenly positioned.

[0052] In a further embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of semi sphere shaped components (509) that are randomly positioned.

[0053] In another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506), and is rough.

[0054] In yet another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are evenly positioned.

[0055] In still another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are randomly positioned.

[0056] In a further embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506), and is rough.

[0057] In an additional embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are evenly positioned.

[0058] In yet another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are randomly positioned.

[0059] In also another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508), and is rough. The threaded feature (508) can be in a clockwise manner or anti-clockwise manner.

[0060] In still another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508), and a plurality of semi sphere shaped components (509) that are evenly positioned. The threaded feature (508) can be in a clockwise manner or anti-clockwise manner.

[0061] In still yet another embodiment of the present invention, the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508), and a plurality of semi sphere shaped components (509) that are randomly positioned. The threaded feature (508) can be in a clockwise manner or anti-clockwise manner.

[0062] We now refer to Figure 2, and the housing (503) comprising the horizontal bore (504).

[0063] In an embodiment of the present invention, the surface of the horizontal bore (504) of the housing (503) comprises at least one tongue feature (505). In a preferred embodiment of the present invention, as shown in Figure 2, the surface of the horizontal bore (504) of the housing (503) comprises two tongue features (505), one is situated at the position of 12 o’clock, and another one is situated at the position of 6 o’clock.

[0064] The tongue feature (505) may exist along the entire length of the surface of the horizontal bore (504) of the housing (503).

[0065] Alternatively, the tongue feature (505) may exist along part of the length of the surface of the horizontal bore (504) of the housing (503).

[0066] The tongue feature (505) of the surface of the horizontal bore (504) of the housing (503) may comprise a square tongue, a rectangular tongue, a U-shaped tongue, or the likes.

[0067] We now refer to Figure 3, and the outer wall of the hollow cylinder (506).

[0068] In an embodiment of the present invention, the outer wall of the hollow cylinder (506) comprises at least one groove feature (507) that complements the tongue feature (505) of the surface of the horizontal bore (504) of the housing (503). In a preferred embodiment of the present invention, as shown in Figure 3, the outer wall of the hollow cylinder (506) comprises two groove features (507), one is situated at the position of 12 o’clock, and another one is situated at the position of 6 o’clock. The groove feature (507) may exist along the entire length of the outer wall of the hollow cylinder (506).

[0069] Alternatively, the groove feature (507) may exist along part of the length of the outer wall of the hollow cylinder (506).

[0070] The groove feature (507) of the outer wall of the hollow cylinder (506) may comprise a square groove, a rectangular groove, a U-shaped groove, or the likes.

[0071] The oil palm tree products are being processed in the processing means (500). The oil palm tree products are introduced to the machine via the inlet (501) of the processing means (500). Once the oil palm tree products are in the processing means (500), the worm screw pushes the oil palm tree products from the inlet (501) towards the outlet (502), and at the same time cutting, crushing, milling, grinding, or shredding the oil palm tree products against the inner wall of the hollow cylinder (506).

[0072] As disclosed above, the inner wall of the hollow cylinder (506) comprises features such as the horizontal bars, the threaded feature (508), the rough inner wall feature, the semi sphere shaped components (509) that are either evenly or randomly positioned, or any combinations thereof. All these features may be worn out in time due to the constant friction and pressing of the abrasive and coarse oil palm tree products against the inner wall of the hollow cylinder (506). Therefore, the hollow cylinder (506) is one of the parts of the present machine that is subject to wear and tear.

[0073] The aim of the teaching of the present invention is to allow the worn and torn hollow cylinder (506) to be replaced in an easy manner.

[0074] Typically, machines that are used to processed oil palm tree products comprise parts that are subjects to wear and tear. Once the parts are worn and torn, it is very difficult to replace them. Most of the time, the whole machine needs to be replaced with a new one, which is costly. In contrast to those typical machines that are available in the current market, the hollow cylinder (506) of the present invention can be easily removed and replaced with a new one.

[0075] We now refer to Figure 5. When the hollow cylinder (506) is within the housing (503), and in contact with the surface of the horizontal bore (504) of the housing (503), its position is stationary and securely fixed by the complementary pairing of the groove feature (507) of the outer wall of the hollow cylinder (506) to the tongue feature (505) of the surface of the horizontal bore (504) of the housing (503).

[0076] We now refer to Figure 4. Although the position of the hollow cylinder (506) is stationary and securely fixed within the housing (503), the hollow cylinder (506) can be easily removed via a horizontal sliding movement which is made possible due to the groove feature (507) and the tongue feature (505).

[0077] Once removed, a new hollow cylinder (506) can be easily installed via the same horizontal sliding movement. The groove feature (507) of the outer wall of the hollow cylinder (506) is positioned to match and align with the tongue feature (505) of the surface of the horizontal bore (504) of the housing (503), and thereafter the hollow cylinder (506) is pushed into the housing (503), where the horizontal sliding movement is guided by the complementing groove feature (507) and tongue feature (505).

[0078] Therefore, the hollow cylinder (506) is stationary and securely fixed within the housing (503) and yet not permanently attached to the housing (503). Consequently, the worn and torn hollow cylinder (506) can be removed and replaced with a new one effortlessly.

[0079] Herein onwards, information pertaining to additional features applied to the machine will be disclosed. These features enhance the performance of the machine. We now refer to horizontal bore (504) of the housing (503) and the hollow cylinder (506), where they may comprise the additional features.

[0080] In an embodiment of the present invention, the horizontal bore (504) of the housing (503) and the hollow cylinder (506) are straight from the direction of the inlet (501) to the outlet (502).

[0081] In another embodiment of the present invention, the horizontal bore (504) of the housing (503) and the hollow cylinder (506) are tapered from the direction of the inlet (501) to the outlet (502).

[0082] We now refer to worm screw, where it may comprise the additional features.

[0083] In an embodiment of the present invention, the worm screw is straight from the direction of the inlet (501) to the outlet (502).

[0084] In another embodiment of the present invention, the worm screw comprises a first section and a second section that are joined together, wherein the first section is tapered from the direction of the inlet (501) to the outlet (502), and the second section is straight.

Claims

CLAIMS1) A machine with replaceable parts for processing oil palm trees products, wherein the machine comprises: a) a motor (100); b) a gearbox (200) connected to the motor (100); c) a coupling means (300) connected to the gearbox (200); d) a bearing system (400) connected to the coupling means (300); e) a processing means (500) connected to the bearing system (400); wherein the processing means (500) comprises an inlet (501) for receiving the oil palm tree products; at least one outlet (502) for dispensing processed oil palm tree products; at least one housing (503) that further comprises a cylindrical shaped horizontal bore (504); at least one hollow cylinder (506) that further comprises an inner wall and an outer wall, which is horizontally positioned within the housing (503) and in contact with a surface of the horizontal bore (504) of the housing (503); and a worm screw that is connected to the bearing system (400), which is horizontally positioned along the centre of the processing means (500) and spanning along the entire length of the processing means (500) for simultaneously pushing the oil palm tree products from the inlet (501) of the processing means (500) to the outlet (502) of the processing means (500), and cutting, crushing, milling, grinding, or shredding the oil palm tree products against the inner wall of the hollow cylinder (506); characterized in that;f) the surface of the horizontal bore (504) of the housing (503) comprises at least one tongue feature (505); and g) the outer wall of the hollow cylinder (506) comprises at least one groove feature (507) that complements the tongue feature (505) of the surface of the horizontal bore (504) of the housing (503).2) A machine in accordance with claim 1 , wherein the bearing system (400) comprises at least one ball bearing.3) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506).4) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506).5) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508).6) A machine in accordance with claim 5, wherein the threaded feature (508) is in a clockwise manner or anti-clockwise manner.7) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) is rough.8) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of semi sphere shaped components (509) that are evenly positioned.9) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of semi sphere shaped components (509) that are randomly positioned.10) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506), and is rough.11) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are evenly positioned.12) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along the entire length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are randomly positioned.13) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506), and is rough.14) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are evenly positioned.15) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises a plurality of horizontal bar features that span along part of the length of the inner wall of the hollow cylinder (506), and a plurality of semi sphere shaped components (509) that are randomly positioned.16) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508), and is rough.17) A machine in accordance with claim 16, wherein the threaded feature (508) is in a clockwise manner or anti-clockwise manner.18) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508), and a plurality of semi sphere shaped components (509) that are evenly positioned.19) A machine in accordance with claim 18, wherein the threaded feature (508) is in a clockwise manner or anti-clockwise manner.20) A machine in accordance with claim 1 , wherein the inner wall of the hollow cylinder (506) comprises at least one threaded feature (508), and a plurality of semi sphere shaped components (509) that are randomly positioned.21) A machine in accordance with claim 20, wherein the threaded feature (508) is in a clockwise manner or anti-clockwise manner.22) A machine in accordance with claim 1, wherein the tongue feature (505) spans along the entire length of the surface of the horizontal bore (504) of the housing (503).23) A machine in accordance with claim 1, wherein the tongue feature (505) spans along part of the length of the surface of the horizontal bore (504) of the housing (503).24) A machine in accordance with claim 1 , wherein the tongue feature (505) of the surface of the horizontal bore (504) of the housing (503) is a square tongue, a rectangular tongue, a U-shaped tongue, or the likes.25) A machine in accordance with claim 1 , wherein the groove feature (507) spans along the entire length of the outer wall of the hollow cylinder (506).26) A machine in accordance with claim 1 , wherein the groove feature (507) spans along part of the length of the outer wall of the hollow cylinder (506).27) A machine in accordance with claim 1 , wherein the groove feature (507) of the outer wall of the hollow cylinder (506) is a square groove, a rectangular groove, a U-shaped groove, or the likes.28) A machine in accordance with claim 1 , wherein the horizontal bore (504) of the housing (503) and the hollow cylinder (506) are straight from the direction of the inlet (501) to the outlet (502).29) A machine in accordance with claim 1 , wherein the horizontal bore (504) of the housing (503) and the hollow cylinder (506) are tapered from the direction of the inlet (501) to the outlet (502).30) A machine in accordance with claim 1 , wherein the worm screw is straight from the direction of the inlet (501) to the outlet (502).31) A machine in accordance with claim 1 , wherein the worm screw comprises a first section and a second section that are joined together, wherein the first section is tapered from the direction of the inlet (501) to the outlet (502), and the second section is straight.

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