TH2001006909A - Frictionless reciprocating pump - Google Patents

Abstract

------07/12/2022------(OCR) This frictionless piston pump consists of a frictionless piston rod assembly 2 connected to the pump chamber 3 with an inlet valve 5 and an outlet valve 6 to prevent water from flowing back inside the frictionless piston rod assembly 2, which consists of a long cylindrical piston rod 8 with a closed end. Between the piston rod 8 and the outer casing 10, there is a space for two rubber sleeves to be inserted, and there is a pressure chamber 16 between the rubber sleeves. The piston rod 8 is mounted in the center of the rubber sleeve, dividing the rubber sleeve into two parts: the upper rubber sleeve 14 and the lower rubber sleeve 15. During operation, the rubber sleeve can be flipped between the piston rod 8 and the outer casing 10. The pressurized fluid in the pressure chamber 16 causes the rubber sleeve to adhere to the piston rod 8 and the outer casing 10, allowing the piston rod 8 to move up and down without leakage. And frictionless pressure chamber 16 should have sufficient distance between the rubber sleeves to prevent friction between the rubber sleeves. ------------ This frictionless piston pump consists of a frictionless piston rod assembly 2, which is tightly connected to the pipe inside the pump chamber 3, with an inlet valve 5 as part of the pump chamber to prevent water from flowing back out through the water inlet 4, and a water outlet valve 6, which is part of the pump chamber 3 to prevent water from flowing in from the water outlet 7. Inside the frictionless piston rod assembly 2, which consists of a piston rod 1 attached to a long cylindrical piston rod 8, the end of which is capped with a piston rod 9. The size of the piston rod 8 and the entire outer casing has sufficient space to allow the rubber sleeves to be inserted in two layers and there is still space for a pressure chamber 16 in the center. The piston rod 8 is attached to the center of the rubber sleeve with a rubber sleeve 13. The rubber sleeve is divided into two parts: the upper rubber sleeve 14 and the lower rubber sleeve 15 on each side of the rubber sleeve. It will be extended, expanded and then flipped back to the outside. The outer lip of the upper rubber sleeve 14 will be extended, expanded and flipped back to be attached to the upper outer casing 10. The outer lip of the lower rubber sleeve 15 will be extended, expanded and flipped back to be attached to the lower outer casing 11. The upper outer casing 10 and the lower outer casing 11 are closely pressed against the middle outer casing 12 with the upper rubber sleeve lip 14 and the lower rubber sleeve lip 15 inserted. When pressed, the rubber sleeve surface collapses, creating a tight fit without leakage. When pressurized fluid is introduced through the pressure port 17 into the pressure chamber 16, the outer upper rubber sleeve 14 expands against the inner upper casing 10, contracts against the piston rod 8, and the outer lower rubber sleeve 15 expands against the inner lower casing 11, contracts against the piston rod 8, allowing the piston rod 8 to move up and down without friction between parts and without leakage. The volume inside the pump chamber 3 increases and decreases, causing pumping. Without friction, when the piston rod 1 is pulled until it moves up, the piston rod 8 moves up without friction. The force is transmitted to create low pressure causing the water inlet valve 5 to open while the water outlet valve 6 closes with pressure, causing water from the water source to flow into the pump room 3. When the piston rod 1 is pressurized until it moves down, the piston rod 8 moves down without friction. The force is transmitted to create water pressure in the pump room 3, sending water through the water outlet valve 6 for use. The pressure room 16 should have enough space between the rubber sleeves to prevent friction of the rubber sleeves.

Claims (3)

The frictionless reciprocating pump according to claim 1 includes - a frictionless piston rod assembly (2), - a pump chamber (3) in one of which an internal cavity is a frictionless piston rod assembly (2), - a water inlet valve (5) connected to the pump chamber (3), - a water outlet valve (6) connected to the pump chamber (3). 2. The frictionless reciprocating pump according to claim 1, wherein the frictionless piston rod assembly (2) has a piston rod (8) that moves with the piston rod (1) when a pushing or pulling force is applied to drive the piston rod (8), having a cylindrical shape with the external end. The piston is closed and moves in the outer sleeve which has the shape of a cylinder inside which is bigger than the piston rod (8). The outer sleeve is divided into three parts: the upper outer sleeve (10), the middle outer sleeve (12), the lower outer sleeve (11). The space between the piston rod (8) and the upper outer sleeve (10) has the upper sleeve (14) which is at the bottom tightly attached to the piston rod (8) with a rubber sleeve (13). The distance that the rubber sleeve is attached to the piston rod (8) is half the stroke length and then the inner surface of the rubber sleeve is flipped back to the inside. The outer sleeve is half the stroke length, then expand the upper rubber sleeve (14) to cover with the upper rubber sleeve (10), and assemble with the middle sleeve (12), with the upper rubber sleeve (14) inserted between the contact surfaces at the lower rubber sleeve (15). Assembled symmetrically in the same way as the upper rubber sleeve (14), then compress the contact surface between the upper rubber sleeve (10) and the middle sleeve (12) with the upper rubber sleeve (14) inserted, and compress the contact surface between the lower sleeve (11) and the middle sleeve (12) with the lower rubber sleeve (15) inserted by compressing with the fixing bolts (18) distributed around in balance. When the assembly is complete, the pressurized fluid is filled through the pressure port (17) into the pressure chamber (16). The upper rubber sleeve (14) and the lower rubber sleeve (15) will stretch against the external and internal walls, creating a cavity inside the upper rubber sleeve (14) and the lower rubber sleeve (15), allowing the piston rod (8) to move freely axially while the piston rod (8) moves down. The upper rubber sleeve (14), the rubber attached to the piston rod (8) will be longer and the rubber attached to the upper outer casing (10) will be shorter as the piston rod (8) moves down to the lower rubber sleeve (15). The rubber attached to the piston rod (8) will be shorter and the rubber attached to the lower outer casing (11) will be longer as the piston rod (8) moves up to the upper rubber sleeve (14). The rubber attached to the piston rod (8) will be shorter and the rubber attached to the upper outer casing (10) will be longer as the piston rod (8) moves up to the lower rubber sleeve (15). The rubber attached to the piston rod (8) will be longer and the rubber attached to the lower outer casing (11) will be longer as the piston rod (8) moves up to the lower rubber sleeve (15). The lower shaft (11) will be shortened causing that during the entire time of the upward and downward movement of the piston shaft (8), the volume in the pressure chamber (16) will not change. 3. The frictionless reciprocating pump according to claim 1 or 2, when the piston shaft (8) moves up and down, the volume in the pump chamber (3) changes, the inlet valve (5) and the outlet valve (6) will operate causing water to be sucked in through the inlet side (4) and delivered through the outlet side (7) continuously without friction. Between the piston rod parts (8) and the inside of all outer casings, namely the upper outer casing (10), middle outer casing (12) and lower outer casing (11), which are fixed and there is no friction in the pressure chamber (16) between the surface of the upper rubber sleeve (14) and the lower rubber sleeve (15). With the tight grip of the upper rubber sleeve (14) and the lower rubber sleeve (15), there is no leakage of the frictionless piston pump. The special feature is the frictionless piston rod assembly (2). When the piston rod (8) moves up and down, there is no friction between the piston chamber parts. There is no leakage due to the back and forth flipping of the rubber sleeve walls between the outer and inner rubber sleeves by using the upper rubber sleeve (14) and the lower rubber sleeve (15) assembled between the piston rod (8) and all outer casings, namely the upper outer casing (10), middle outer casing (12) and the lower outer casing (11). When filled with pressurized fluid, a pressure chamber (11) is formed, which can be said to have a constant volume throughout the operation. ------------ 1. Frictionless piston pump consists of - frictionless piston rod assembly (2) - pump chamber (3) in one side of the cavity is the frictionless piston rod assembly (2) - water inlet valve (5) connected to the pump chamber (3) - water outlet valve (6) connected to the pump chamber (3) 2. The frictionless piston pump according to claim 1, wherein the frictionless piston rod assembly (2) has a piston rod (8) that moves with the piston rod (1) when a force is applied to drive the piston rod (8), having a closed cylindrical shape on the outside, which moves in an outer casing having an inner cylindrical shape larger than the piston rod (8). Said outer casing is divided into three parts, namely, an upper outer casing (10), a middle outer casing (12), and a lower outer casing (11). The space between the piston rod (8) and the upper outer casing (10) has an upper rubber sleeve (14) at the bottom tightly fastened to the piston rod (8) by a rubber sleeve (13). The distance the rubber sleeve is attached to the piston rod (8) is one half of the stroke, and the inner surface of the rubber sleeve is turned back to the outside for a distance of one-half of the stroke, and the upper rubber sleeve (14) is extended to cover the upper outer casing (10) and assembled with the middle outer casing (12), with the upper rubber sleeve (14) inserted between the contact faces of the lower rubber sleeve (15), assembled symmetrically in the same way. The upper rubber sleeve (14) is then pressed to compress the contact surface between the upper outer casing (10) and the middle outer casing (12) with the upper rubber sleeve (14) inserted. The contact surface between the lower outer casing (11) and the middle outer casing (12) with the lower rubber sleeve (15) inserted is compressed by squeezing with the fixing bolts (18) distributed around in a balanced manner. When the assembly is complete, the pressurized fluid is filled through the pressure port (17) into the pressure chamber (16). The upper rubber sleeve (14) and the lower rubber sleeve (15) are attached to the external and internal walls, creating a gap inside the upper rubber sleeve (14) and the lower rubber sleeve (15), allowing the piston rod (8) to move freely along the axis. As the piston rod (8) moves down the upper rubber sleeve (14), the rubber attached to the piston rod (8) will lengthen and the rubber attached to the upper outer casing (10) will shorten. As the piston rod (8) moves down to the lower rubber sleeve (15), the rubber attached to the rod The piston rod (8) will be shortened while the rubber attached to the lower outer casing (11) will be lengthened. As the piston rod (8) moves up the upper rubber sleeve (14), the rubber attached to the piston rod (8) will be shortened and the rubber attached to the upper outer casing (10) will be lengthened. As the piston rod (8) moves up the lower rubber sleeve (15), the rubber attached to the piston rod (8) will be lengthened while the rubber attached to the lower outer casing (11) will be shortened. Therefore, during the entire time of the piston rod (8) moving up and down, the volume in the pressure chamber (16) will not change. 3. The frictionless piston pump according to claim 1 or 2, when the piston rod (8) moves up and down, the volume in the pump chamber (3) changes, the inlet valve (5) and the outlet valve (6) are activated, causing water to be sucked in from the inlet side (4) and discharged from the outlet side (7) continuously without friction between the piston rod assembly (8) and the inside of all outer casings, namely the upper outer casing (10), middle outer casing (12) and lower outer casing (11), which are fixed and there is no friction in the pressure chamber (16) between the surface of the upper rubber casing (14) and the lower rubber casing (15). Due to the tight grip of the upper rubber casing (14) and the lower rubber casing (15), there is no leakage of the frictionless piston pump. The special feature is that the frictionless piston rod assembly (2) when the piston rod (8) moves up and down, there is no friction between the pump chamber parts, and there is no leakage due to the back and forth flipping of the rubber casing walls between the outer and inner casings. By using upper rubber sleeve (14) and lower rubber sleeve (15) assembled between the pump shaft (8) and all outer sleeves, namely upper outer sleeve (10), middle outer sleeve (12) and lower outer sleeve (11), when filled with pressurized fluid, a pressure chamber (16) is formed, which can be said to have constant volume throughout the operation;