IE86852B1 - Fluid transfer device - Google Patents

Abstract

The invention relates to a device using reciprocal movement of the piston to transfer fluid. The device includes a body, a switching unit, a triggering unit, a piston unit and a transmission unit, the ends of the first and second passages are configured to communicate with the manifold chamber, the first passage always communicates with the receiving chamber, the second passage configured to mate with the triggering unit with the help of the triggering end, and the reset component alternatively communicates with the input passage or the output passage; the piston reciprocally moves in the receiving chamber, the first and second belt wheels interact with each other through the engagement between the first and second gears, the device has functions of pumping water or compressing air or extracting air, it depends on the kinds of the working medium. <Figure 6>

Description

Fluid transfer device Field of the Invention The invention relates to a fluid transfer device, especially to a device using reciprocal movement of the piston to transfer fluid.

Description of prior art The working process of the internal combustion engine is roughly such, the piston moves downward, the mixed combustible gas goes into the cylinder; the piston moves upward to compress combustible gas, the spark plug ignites combustible gas to explode the gas, the exploded gas with high temperature and high pressure drives the piton moving downward, the linear movement of the piston is converted to the rotational movement of the crankshaft by the connecting rod; the crankshaft goes on rotating because of the inertia, the rotational movement of the crankshaft is converted to the linear movement of the piston by the connecting rod, the piston moves upward to push exhaust gas out of the cylinder. In brief, inhale -*compression-*work~*exhaust.

Whether we can make some reconstruction based on the structure of the current internal combustion engine, saving the process of compression-* work, keeping the process of inhale -* exhaust, such that the reconstructed device can be used in the field of pumping air, or compressing air, or drawing water or pumping water. 2/27 Summary of the present invention The object of the invention is to provide a device to transfer fluid by reciprocal movement of a piston so as to solve the above problem. This object is achieved by providing a fluid transfer device as defined in claim i.

Advantageous embodiments are given in the dependent claims.

In the following, the technical solution will be described.

A fluid transfer device includes a body, a switching unit, a triggering unit, a piston unit and a transmission unit; the device further includes a receiving chamber, an input passage, an output passage and a valve chamber, an end of the receiving chamber in the body, an end of the input passage and an end of the output passage are configured to communicate with the valve chamber. The switching unit includes a swinging arm having a triggering end is and a fixed end, a cartridge having a first passage, a second passage and a manifold chamber, and a reset component for resetting the switching unit. The fixed end of the swinging arm of the switching unit removably connects with the cartridge, the triggering end of the swinging arm is configured to mate with the triggering wheel of the triggering unit, the cartridge is configured to freely hermetically rotate in the valve chamber, an end of the first passage and an end of the second passage are configured to communicate with the manifold chamber, the first passage always communicates with the receiving chamber of the body, the second passage of the cartridge is configured to alternatively communicate with the input passage of the body or the output passage with a help of the reset component and a cooperation between the triggering end and the triggering unit. The triggering unit includes a triggering wheel having a 3/27 triggering block, a fourth belt wheel, a fourth support board and a fifth belt wheel. The piston unit further includes a piston with a piston ring, a connecting rod, a crankshaft and a cylinder casing without cover or bottom, the receiving chamber of the body is surrounded by the cylinder casing of the piston unit, a rotation of the crankshaft is configured to drive the piston reciprocally moving in the receiving chamber, the crankshaft interacts with the fourth belt wheel through a belt wheel. The transmission unit includes a first support board, a second support board, a third support board, a first gear, a second gear, a first belt wheel, a second belt wheel, a third belt wheel, a first support pillar, a second support pillar, a vane, a belt and a bushing, the first support board of the transmission unit at a middle portion thereof has a first belt wheel, the end of the second support board at a middle portion thereof having a second belt wheel, a head of the second support board at a middle portion thereof having a third belt wheel, the is second and third belt wheel interacts with each other by a belt, the first and second belt wheel interacts with each other by an engagement between the first and second gear, the first belt wheel connects with an outside power source through a belt, the third belt wheel rotates in unison with the crankshaft through a key connection. Heat generated by the device is taken away by the vane.

Advantageously, the triggering end of the swinging arm of the switching unit is configured to mate with the triggering block of the triggering unit, the triggering block is configured to rotate around an axis of the fourth belt wheel and has an arcuate surface for mating with the triggering end of the switching unit, a rotation of the fourth belt wheel makes an engagement between the triggering block and the triggering end of the switching unit, 4/27 the triggering block drives the triggering end moving for a rotation of the cartridge so as to switch a passage communicated with an end of the second passage from the output passage of the body to the input passage. A head of the reset component communicates with the swinging arm and an end of the reset component communicates with the body, the reset component drives the switching unit moving so as to switch a passage communicated with an end of the second passage from the input passage of the body to the output passage. io A width of the second passage is less than the minimal distance between an end of the output passage of the body and an end of the input passage.

Advantageously, a width of the swinging range formed by a rotation of a head of the first passage with the cartridge is less than a constriction width is of an end of the receiving chamber of the body.

Advantageously, a head of the input passage and a head of the output passage are configured to extend to the exterior surface of the body.

Advantageously, a head of the first passage and a head of the second passage are configured to radially extend to the exterior surface of the cartridge.

Advantageously, the first gear rotates in unison with the first belt wheel through a key connection, the second gear rotates in unison with the second belt wheel through a key connection. s/η Advantageously, a head of the first support pillar removably partly inserts into the first support board, an end of the fist support pillar removably partly inserts into the body, an end of the second support board is removably mounted to the first support board, a bolt sequentially passes through the second support board, the first support board and the first support pillar, and fastens these three to the body; two sides of the second support pillar respectively removably connects with the first support board and the second support board, and two ends of the second support pillar partly inserts into the corresponding support board, the fist support board, the second support board and the second support pillar are fastened together by bolts.

In the following, the working process of the device will be described. is The outside power source drives the first belt wheel rotating through the belt, the first belt wheel drives the second belt wheel rotating through the engagement between the first and second gears, the second belt wheel drives the third belt wheel rotating through the belt, the third belt wheel drives the crankshaft rotating through the key connection, the crankshaft drives the piston reciprocally move through the connecting rod, the crankshaft drives the fifth belt wheel rotating through the key connection, that is the triggering block rotates around the axis of the fourth belt wheel. The triggering block touches the triggering end of the swinging arm and then drives the triggering end rotate, that is the swinging arm drives the cartridge rotating, the second passage is switched from the output passage of the body to the input passage during the rotational movement of the cartridge, when the arcuate surface of the triggering block is tangent to the 6/27 triggering end, the triggering end is not rotated any longer, the first passage of the cartridge keeps communicating with the input passage, while the first passage always communicates with the receiving chamber. The piston moves upward to make fluid sequentially flow through the input passage, the second passage, the manifold chamber, the first passage and the receiving chamber. The triggering block goes on rotating, when the triggering block is separated from the triggering end of the swinging arm, the swinging arm returns to the initial position under the effect of the reset component, meanwhile, the cartridge rotates back to the initial position, that is the second passage of the cartridge is switched back to the output passage from the input passage of the body and keeps communicating with the output passage, while the first passage always communicates with the receiving chamber, the piston moves downward to compress the fluid therein out of the receiving chamber, fluid sequentially passes through the is first passage, the manifold chamber, the second passage and the output passage.

Advantageous Effects Through the intermittent linkage between the triggering block and the triggering end, upward and downward movements of the piston combines with the rotation of the cartridge achieve that the receiving chamber switchingly independently communicates with the input passage or the output passage, that is the second passage alternatively communicates with the input passage or the output passage, while the receiving chamber always communicates with the first passage. Therefore, 1. When the input passage communicates with the water source, the piston moves upward to create a negative pressure area in the receiving chamber, in water near the input passage is compressed into the receiving chamber through the second and first passages by the effect of the atmosphere. The downward movement of the piston within the receiving chamber compresses water therein out of the output passage opening through the first and second passages, due to the near incompressibility of fluid, the output passage can output water flow with equal pressure, so the device can be used as a water pump, even there is some air left in the water pipe connected with the input passage. 2. When the input passage communicates with the atmosphere, the piston moves upward to create a negative pressure area in the receiving chamber, air near the inlet opening is compressed into the receiving chamber through the second and first passages by the effect of the atmosphere. The downward movement of the piston within the receiving chamber is compresses air therein out of the output passage opening through the first and second passages, due to the compressibility of air, the output passage can output air flow with a little pressure, if the output passage connects with a gas tank, so the device can be used as an air compressor. 3. When the input passage communicates with a sealing container while the output passage communicates with the atmosphere, the piston moves upward to create a negative pressure area in the receiving chamber, the air in the sealing container is compressed into the receiving chamber through the second and first passage by the current air pressure in the container.

The downward movement of the piston within the receiving chamber compresses air therein out of the output passage opening through the first and second passages, and then into the atmosphere, so the device can be 8/27 used as an air-extractor.

Brief description of the drawing Further characteristics and advantages will be more apparent from the description of a preferred but non-exclusive of the fluid transfer device according to the invention, illustrated by way of non-limiting example in the accompanying drawings, in which: Fig.1 is a 3d-drawing of the fluid transfer device of the invention; Fig.2 is a 3d-drawing of the device in Fig.1 from another view angle; Fig.3 is an exploded 3d-drawing of main parts of the device in Fig.1; Fig.4 is a 3d-drawing of the device in Fig.1 with the body, the switching unit, the triggering unit and the piston unit; Fig.5 is a sectional 3d-drawing of Fig.4; Fig.6-9 are the front views of the Fig.5, wherein the piston is at different positions; Fig.10 is a 3d-drawing of the body; Fig.ll is a sectional front view of the body; Fig.12 is an exploded 3d-drawing of the switching unit; Fig.13-14 is sectional 3d-drawing of the cartridge from different view angles; Fig.15 is a 3d-drawing of the triggering wheel; Fig.16 is a front view of the triggering wheel without a fixed sheet in Fig.15; Fig.17 is an exploded 3d-drawing of the triggering wheel in Fig.15; Fig.18 is an exploded 3d-drawing of the transmission unit. 1. body; 101. receiving chamber; 102. valve chamber; 103. input passage; 104. output passage; 105. spiral; 2. switching unit; 201. swinging arm; 9/27 201a. triggering end; 201b. fixed end; 201c. beak-like rod; 201d. beak; 201e. rod; 202. cartridge; 202a. first passage; 202b. second passage; 202c. manifold chamber; 203. reset component; 3. triggering unit; 301. triggering block; 302. fourth belt wheel; 303. fourth support board; 304. fifth belt wheel; 305. triggering wheel; 306. fixed sheet; 4. piston unit; 401. piston; 402. connecting rod; io 403. crankshaft; 404. cylinder casing; . transmission unit; 501. first support board; 502. second support board; 503. third support board; 504. first gear; 505. second gear; 506. first belt wheel; 507. second belt wheel; is 508. third belt wheel; 509. first support pillar; 510. second support pillar; 511. vane; 512. first rotating shaft; 513. second rotating shaft; 6. inlet opening; 7. outlet opening.

Detailed description of the preferred embodiment In order to distinguish between the head and the end of the component, the portion near the axis of the cartridge 202 is called the end, and the portion away from the axis of the cartridge 202 is called the head.

Referring to Fig.l to Fig.3, a fluid transfer device includes a bodyl, a switching unit 2, a triggering unit3, a piston unit 4 and a transmission unit 5. Power is transmissioned to the transmission unit 5 from the electric motor /27 mounted by the belt, the transmission unit 5 transfers power to the piston unit 4 through the belt, the piston unit 4 transfers power to the switching unit 2, the linkage between the switching unit 2 and the piston unit 4 achieves that fluid is indrafted through the inlet opening 6 of the transfer device and then released from the outlet opening 7 of the transfer device.

In order to increase the transferring efficiency of the device, the device includes four piston units 4, four piston units 4 are uniformly arranged in a ring array, the axis of the array is the axis of the cartridge 202. Three of the io four input passages 103 of the body 1 are sealed by plugs, and three of the four output passages 104 of the body 1 are sealed by plugs, the transfer device only keeps one input passage 103 and one output passage 104, a pipe connects with the head of the input passage 103 to form an input opening 6 of the transfer device, a pipe connects with the head of the is output passage 104 to form an output opening 7 of the transfer device.

The heat created by the device during working is taken away by the vane 511 arranged in the front of the device.

Referring to Fig.18, the transfer device provides one first support board 501, four second support boards 502, one third support board 503, one first gear 504, four second gears 505, one first belt wheel 506, four second belt wheels 507, four third belt wheels 508, eight first support pillars 509, four second support pillars 510, one vane 511, five belts and a plurality of bushings.

Four second support pillars 502 are uniformly arranged in a ring array, the 11/27 axis of the array is the axis of the first support board 501, two mounting holes located at the end of the first support board 501 removably connects with the first support board 501, the end of the second support board 502 at the middle portion thereof has a second belt wheel 507, the head of the second support board 502 at the middle portion thereof has a third belt wheel 508, the second and third belt wheels 507, 508 interacted with each other by equal transmission ratio through the belt. The second belt wheel 507 coaxially provides a second gear 505, which rotates in unison with the second belt wheel 507 through the key connection. io The first support board 501 at the middle portion thereof has a first belt wheel 506, which coaxially provides a first gear 504, which rotates in unison with the first belt wheel 506 through the key connection. is The linkage between the first and second belt wheels 506, 507 is achieved by the engagement between the first and second gears 504, 505, the transmission ratio thereof is 2. The first belt wheel 506 connects with outside power source through the belt, the transmission ratio thereof is 2. The third belt wheel 508 and the crankshaft 403 interact with each other by equal transmission ratio through the key connection, due to such arrangement, finally the transmission ratio between the crankshaft 403 and the electric motor is 4, due to peed reduction, the crankshaft 403 can output large torque to the connecting rod 402, therefore, the piston 401 has large force to pull and compress fluid, so as to do more work to fluid. The heat created by the gears and belts during working is taken away by the rotating vane 511 configured to rotate in unison with first belt wheel 506 through the key connection. 12/27 The second rotating shaft 513 connected with the second belt wheel 507 and the second gear 505 passes through the second support board 502, each end of two ends of the second rotating shaft 513 respectively partly inserts into the first support board 501 and the third support board 503, such arrangement can limit the axial movement of the second rotating shaft 513 so as to save extra limiting parts like antiextrusion rings or screws or nuts. io Each end of two ends of the first rotating shaft 512 connected with the first belt wheel 506 and the first gear 504 respectively connects with the first support board 501 and the third support board 503 through bearings, the bearing has interference fitting with the first support board 501 or the third support board 503, the bearing has interference fitting with the first is rotating shaft 512. The vane 511 is mounted to the first rotating shaft 512 near the side of the third support board 503, the vane 511 is fastened to the first rotating shaft 512 by the screw.

The first support board 501 removably connects with the third support board 503 through the second support pillar 510, each end of two ends of the second support pillar 510 respectively inserts into the first support board 501 and the third support board 503, such arrangement has such advantages: 1. limiting the axial and radial movements of the second support pillar 510 for avoiding the device shaking created by the displacement of parts during the transmission unit 5 working. 13/27 2. Increasing the assemble convenience, the second support pillar 510 can be quickly conveniently situated by the prefabricate counter bore on the first support board 501, then the prefabricate counter bore on the third support board 503 can be quickly conveniently slipped into the second support pillar 510. 3. The support effect of the second support board 510 can be maximized, the cylinder formed by that the first support pillar 510 inserts into the first support board 501 or the third support board 503 supports each other for io preventing the fastening screws from the effect of radial shear force so as to make the screw only take the effect of axial force .

The second support pillar 510 separates the first support board 501 from the third support board 503 to form a space for arranging the gear and the is belt wheel. The first gear 504 and the second gear 505 are aligned with each other by face, the first belt wheel 506, the second belt wheel 507 and the third belt wheel 508 are aligned with one another by face, such aligning arrangement can be achieved by bushings adjusting heights of the gear or the belt wheel.

The first support board 501 removably connects with the body 1 through the first support pillar 509, each end of two ends of the first support pillar 509 respectively partly inserts into the first support board 501 and the body 1, such arrangement has above advantages.

Referring to Fig.10 to Fig.ll, the body 1 has four receiving chambers 101, four input passages 103, four output passages 104 and one valve chamber 14/27 102. Four receiving chambers 101, four input passages 103 and four output passages 104 are uniformly arranged in a ring array, the axis of the array is the axis of the valve chamber 102. One input passage 103 and one output passage 104 are arranged in the middle area between the two receiving chambers 101, the input passage 103 and the output passage 104 are mirror-images.

The end of the receiving chamber 101, the end of the input passage 103 and the end of the output passage 104 are configured to communicate with the io valve chamber 102, the head of the input passage 103 and the head of the output passage 104 are configured to extend to exterior surface of the body 1, the diameters of the heads of the input and output passages 103,104 are greater than the diameters of the ends thereof, heads of the input and output passages 103,104 have thread for connecting. The end of the is receiving chamber 101 has a constriction, the distance between the ends of the input and output passage 103,104 is less than the distance between the heads of input and output passages 103,104, a spiral 105 is arranged between the input passage 103 or the output passage 104 and the receiving chamber 101, the heat created by the body can be taken away by the air flow through the spiral 105.

Referring to Fig.12 to Fig.14 and Fig.4, the switching unit 2 comprises a swinging arm 201 having a triggering end 201a and a fixed end 201b, a cartridge 202 having a first passage 202a, a second passage 202b and a manifold chamber 202c, a reset component 203 for resetting the switching unit 2, the reset component here is a extension spring 203. The fixed end of the swinging arm 201 removable connects with the cartridge 202 through /27 four groups of bolts, the triggering end 201a of the swinging arm 201 mates with the triggering unit 3. The switching unit 2 is configured to freely hermetically rotate in the cartridge 102, the cartridge 102 is axially limited in the valve chamber 102 by the antiextrusion ring arranged at the ends of the cartridge 202.

Referring to Fig.12, the fixed end 201b of the swinging arm 201 is parallel to the triggering end 201a, the triggering end 201a connects with the fixed end 201b through a vertical arm, which is vertical to the fixed end 201b, the io triggering end 201a at the middle portion has a through hole for mating with the extension spring 203, a beak-like rod 201c is arranged to the triggering end 201a away from the vertical arm, the angle made with the beak 201d and the rod 201e of the beak-like rod 201c is an obtuse angle, the end portion of the beak 201d is round, the connecting portion between is the beak 201d and the rod 201e is round.

Referring to Fig.13, the cartridge 202 has contour corresponding to the valve chamber 102 of the body 1, the manifold chamber 202c is arranged in the middle portion of the cartridge 202, the cartridge 202 uniformly radially arranges eight cylindrical passages, four of passages are called the first passages 202a, the rest four of passages are called the second passages 202b, the diameters of the first and second passages 202a, 202b are equal, the first and second passages 202a, 202b are alternately arranged. The ends of the first and second passages 202a, 202b are configured to communicate with the manifold chamber 202c, the heads of the first and second passages 202a, 202b are configured to radially extend to the exterior surface of the cartridge 202, the manifold chamber 202c in the middle portion of the 16/27 cartridge 202 can only communicate with outside through the first passage 202a or the second passage 202b. The cartridge 202 also includes four threaded holes for fastening the fixed end 201b of the swinging arm 201. The cartridge 202 also includes a spiral 105 there through located between the first passage 202a and the second passage 202b, the spiral 105 do not communicate with the first or second passages 202a, 202b.

Referring to Fig.3, the triggering unit 3 includes triggering wheel 305, a fourth belt wheel 302, a fourth support board 303 and a fifth belt wheel 304. io The triggering wheel 305 rotates in unison with the fourth belt wheel 302 through the key connection, the fourth belt wheel 302 and the fifth belt wheel 304 interacts with each other through the belt, the transmission ratio thereof is 2, the fifth belt wheel 304 rotates in unison with the crankshaft 403 through the key connection. The transmission shaft connecting with is triggering wheel 305 and the fourth belt wheel 302 passes through the fourth support board 303 and freely rotates within the corresponding hole of the fourth support board 303, the fourth support board 303 is removably mounted to the second support board 502 through two groups of screws.

Referring to Fig.15 to Fig.17, the triggering wheel 305 includes two fixed sheets 306 with a form of circular disc, two arcuate triggering blocks 301 and four rivets. Two triggering blocks 301 are radially uniformly and symmetrically arranged to the fixed sheet 306, the arcuate openings of the triggering blocks 301 are opposite. Two triggering blocks 301 are clamped between two fixed sheets 306, the head and end of each triggering block 301 is fastened to two fixed sheets by the rivet. Each fixed sheet 306 at the middle portion thereof has a through hole for matting with the rotary shaft 17/27 and the key.

Referring to Fig.4 to Fig.9, they show the different rotational positions of the switching unit 2 when the piston 401 is at different positions, and the matting situation between the triggering end 201a and the triggering wheel 305, and the communication situation between the receiving chamber 101, the first passage 202a, the second passage 202b, the input passage 103 and the output passage 104. io The piston unit 4 includes a piston 401 with a piston ring, a connecting rod 402, a crankshaft 403 and a cylinder casing 404 without cover or bottom, the receiving chamber 101 of the body 1 is surrounded by the cylinder casing 404, the rotation of the crankshaft 403 drives the piston 401 reciprocally moving in the receiving chamber 101, the crankshaft 403 is interacts with the fourth belt wheel 302 of the triggering unit 3 through the belt wheel.

Referring to Fig.4, the piston 401 is at the upward extreme position, that is the top dead center. A through hole arranged on the middle portion of the triggering end 201a connects with the extension spring 203, the other end of the extension spring 203 connects with the first support pillar 509 of the body 1, due to the elastic force of the extension spring 203, the triggering end 201a rotates in a counterclockwise direction till the beak-like rod 201c of the triggering end 201a touches the first support pillar 509 on the left side thereof, at this time the end of the beak 201d of the triggering end 201a is at the middle portion between the two triggering blocks 301, and there is a certain distance from the triggering block 301. The second 18/27 passage 202b of the cartridge 202 communicates with the output passage 104 of the body 1, the first passage 202a of the cartridge 202 communicates with the receiving chamber 101 of the body 1.

Referring to Fig.7, the triggering wheel 305 rotates in a clockwise direction during the piston 401 moving downward, when the triggering wheel 305 rotates a certain angle, the piston 401 is near to the constriction of the receiving chamber 101, the triggering block 301 touches the end portion of the beak 201d of the triggering end 201a, after this, the piston 401 goes on io moving downward, meanwhile the triggering block 301 pushes the triggering end 201a to rotate, the cartridge rotates as the triggering end 201a rotates, the second passage 202b and the output passage 104 are gradually staggered till the piston 401 moves downward to the extreme position, that is the bottom dead center, the second passage 202b do not is communicate with output passage 104 at all, see Fig.8.

The piston 401 moves from the bottom dead center to the top dead center with the help of the crankshaft 403, meanwhile, the triggering wheel 305 goes on rotating, the triggering block 301 goes on driving the cartridge 202 rotating, the second passage 202b gradually turns to the input passage 103 till the second passage 202b totally communicates with the input passage 103, at this time, the piston 401 is at the piston shown in dashed line in the Fig.9, the triggering block 301 is at the piston shown in dashed line in the Fig.9.

The piston 401 goes on moving upward, the triggering wheel 305 goes on rotating in clockwise direction, because the arcuate surface of the triggering /27 block 301 is tangent to the end portion of the beak 201d of the triggering end 201a. the arcuate surface of the rotating triggering block 301 do not go on pushing the end portion of the beak 201d of the triggering end 201a to rotate, that is the cartridge 202 stops rotating to leave the second passage 202b communicate with the input passage 103 Referring to Fig.9, the piston 401 goes on moving upward, the triggering wheel 305 goes on rotating in clockwise direction, when the piston 401 moves upward to the top dead center, the triggering block 301 of the io triggering wheel 305 separates from the triggering end 201a, due to the elastic force of the extension spring 203, the cartridge 202 rotates in clockwise direction till the beak-like rod 201c of the triggering end 201a touches the first support pillar 509 on the left side thereof, that is the second passage 202b is switched from the input passage 104 to the output is passage 104 and maintained a communication with the output passage 104, so far, a single cycle of motion is done.

In a single cycle of motion, the second passage 202b is switched from the output passage 104 to the input passage 103, and then from the input passage 103 to the output passage 104, the second passage 202b of the cartridge 202 is configured to mate with the triggering unit 3 with the help of the triggering end 201a, and the reset component 203 alternatively communicates with the input passage 103 of the body 1 or the output passage 104. The first passage 202a always communicates with the receiving chamber 101 during the cartridge 202 rotating. Such result can be achieved by such arrangement, the width of the second passage 202b is less than the minimal distance between the end of the output passage 104 of /27 the body 1 and the end of the input passage 103. The width of the swinging range formed by the rotation of the head of the first passage 202a with the cartridge 202 is less than the constriction width of the end of the receiving chamber 101 of the body 1.

In the following, the working process of the fluid transfer device will be described.

The outside power source drives the first belt wheel 506 rotating through io the belt, the first belt wheel 506 drives the second belt wheel 507 rotating through the engagement between the first and second gears 504, 505, the second belt wheel 507 drives the third belt wheel 508 rotating through the belt, the third belt wheel 508 drives the crankshaft 403 rotating through the key connection, the crankshaft 403 drives the piston 401 reciprocally move is through the connecting rod 402, the crankshaft 403 drives the fifth belt wheel 304 rotating through the key connection, that is the triggering block 301 rotates around the axis of the fourth belt wheel 302. The triggering block 301 touches the triggering end 201a of the swinging arm 201 and then drives the triggering end 201a rotating, that is the swinging arm 201 drives the cartridge 202 rotating, during the rotational movement of the cartridge 202, the second passage 202b is switched from the output passage 104 of the body 1 to the input passage 103 and maintained a communication with the input passage 103, while the first passage 202a always communicates with the receiving chamber 101. The piston 401 moves upward to make fluid sequentially flow through the input passage 103, the second passage 202b, the manifold chamber 202c, the first passage 202a and the receiving chamber 101. The triggering block 301 goes on rotating, when the triggering 21/27 block 301 is separated from the triggering end 201a of the swinging arm 201, the swinging arm 201 returns to the initial position under the effect of the reset component, meanwhile, the cartridge 202 rotates back to the initial position, that is the second passage 202b of the cartridge 202 is switched back to the output passage 104 from the input passage 103 of the body 1 and keeps communicating with the output passage 104, while the first passage 202a always communicates with the receiving chamber 101, the piston 401 moves downward to compress the fluid therein out of the receiving chamber 101, fluid sequentially passes through the first passage io 202a, the manifold chamber 202c, the second passage 202b and the output passage 104.

In the following, the application of the fluid transfer device will be described. 1. The inlet opening 6 of the device connects to the water well through pipes, the outlet opening 7 connects to the water tower. The piston 401 in the receiving chamber 101 moves upward to create a negative pressure area in the receiving chamber 101, under the effect of the atmosphere, the air in the pipe connected with the inlet opening 6 goes into the second passage 202b through the input passage 103, then goes into the first passage 202a through the manifold chamber 202c, finally the air is pressed into the receiving chamber 101. Due to the downward movement of the piston 401 in the receiving chamber 101, the air in the receiving chamber 101 is pressed into manifold chamber 202c through the first passage 202a, then into the output passage 104 through the second passage 202b, finally into the water tower along the pipe connected with the outlet opening 7. 22/27 After the air in the pipe connected with the inlet opening 6 is totally pressed out, the piston 401 in the receiving chamber 101 moves upward to create a negative pressure area in the receiving chamber 101, under the effect of the atmosphere, water in the well is compressed into the receiving chamber 101 through the second and first passages 202b, 202a.

The downward movement of the piston 401 within the receiving chamber 101 compresses water therein out of the output passage 104 opening io through the first and second passages202a, 202b, due to the near incompressibility of water, the output passage 104 can output water flow with equal pressure, the water flow at the outlet opening 7 can climb a certain height along the pipe with the help of the pressure into the water tower. So the device can transfer water in a well with a certain depth to a is water tower with a certain height, even there is some air left in the pipe connected with the inlet opening 6, the device can still draw and pump water. 2. The inlet opening 6 of the device connects with the atmosphere, the outlet opening 7 connects with a gas tank through pipes. The piston 401 moves upward to create a negative pressure area in the receiving chamber 101, air near the inlet opening 6 is compressed into the receiving chamber 101 through the second and first passages 202b, 202a by the effect of the atmosphere. The downward movement of the piston 401 within the receiving chamber 101 compresses air therein out of the output passage 104 opening through the first and second passages 202a, 202b, due to the compressibility of air, the output passage 104 can output air flow with a 23/27 little pressure, which is collected in the gas tank little by little, such that air mass with a certain pressure is finally formed in the tank, so the device can be used as an air compressor. 3. The inlet opening 6 of the device connects with a sealing container, while the outlet opening 7 connects with the atmosphere, the piston 401 moves upward to create a negative pressure area in the receiving chamber 101, the air in the sealing container is compressed into the receiving chamber 101 through the second and first passage 202b, 202a by the current air pressure io in the container. The downward movement of the piston 401 within the receiving chamber 101 compresses air therein out of the output passage 104 opening through the first and second passages 202a, 202b,and then into the atmosphere, so the device can draw air out of the sealing container to reduce air pressure in the container. So the device can be used as an is air-extractor.

Claims (5)

1. A fluid transfer device, comprising a body (1), a switching unit (2), a triggering unit (3), a piston unit (4) and a transmission unit (5); characterized in that an end of a receiving chamber (101) in the body (1), an end of an 5 input passage (103) and an end of an output passage (104) are configured to communicate with a valve chamber (102); a fixed end (201b) of a swinging arm (201) of the switching unit (2) being removably connected with a cartridge (202), a triggering end (201a) of the swinging arm (201) being configured to mate with a triggering wheel io (305) of the triggering unit (3), the cartridge (202) being configured to freely hermetically rotate in the valve chamber (102), an end of a first passage (202a) and an end of a second passage (202b) being configured to communicate with a manifold chamber (202c), the first passage (202a) always communicating with the receiving chamber (101) of the body (1), the is second passage (202b) of the cartridge (202) being configured to alternatively communicate with the input passage (103) of the body (1) or the output passage (104) with a help of a reset component (203) and a cooperation between the triggering end (201a) and the triggering unit (3); the receiving chamber (101) of the body (1) being surrounded by a 20 cylinder casing (404) of the piston unit (4), a rotation of a crankshaft (403) being configured to drive a piston reciprocally moving in the receiving chamber (101), the crankshaft (403) interacting with a fourth belt wheel (302) through a belt wheel; a first support board (501) of the transmission unit (5) at a middle 25 portion thereof having a first belt wheel (506), an end of a second support board (502) at a middle portion thereof having a second belt wheel (507), a 25/27 head of the second support board (502) at a middle portion thereof having a third belt wheel (508), the second (507) and the third belt wheel (508) interacting with each other by a belt, the first (506) and the second belt wheel (507) interacting with each other by an engagement between a first 5 (504) and a second gear (505), the first belt wheel (506) connecting with an outside power source through a belt, the third belt wheel (508) rotating in unison with the crankshaft (403) through a key connection.

2. A fluid transfer device according to claim 1, characterized in that io the triggering wheel (305) being provided with a triggering block (301), the triggering end (201a) of the swinging arm (201) of the switching unit (2) being configured to mate with the triggering block (301) of the triggering unit (3), the triggering block (301) being configured to rotate around an axis of the fourth belt wheel (302) and having an arcuate surface is for mating with the triggering end (201a) of the switching unit (2), a rotation of the fourth belt wheel (302) making an engagement between the triggering block (301) and the triggering end (201a) of the switching unit (2), the triggering block (301) driving the triggering end (201a) moving for a rotation of the cartridge (202) so as to switch a passage communicated with 20 an end of the second passage (202b) from the output passage (104) of the body (1) to the input passage (103); a head of the reset component (203) communicating with the swinging arm (201), an end of the reset component (203) communicating with the body (1), the reset component (203) driving the switching unit (2) 25 moving so as to switch a passage communicated with an end of the second passage (202b) from the input passage (103) of the body (1) to the output passage (104); 26/27 a width of the second passage (202b) being less than a minimal distance between an end of the output passage (104) of the body (1) and an end of the input passage (103). 5

3. A fluid transfer device according to claim 1, characterized in that a width of a swinging range formed by a rotation of a head of the first passage (202a) with the cartridge (202) is less than a constriction width of an end of the receiving chamber (101) of the body (1). io

4. A fluid transfer device according to claim 1 or claim 2, characterized in that a head of the input passage (103) and a head of the output passage (104) are configured to extend to the exterior surface of the body (1). is 5. A fluid transfer device according to claim 1 or claim 2, characterized in that the cartridge (202) is configured such that a head of the first passage (202a) and a head of the second passage (202b) are configured to radially extend to the exterior surface of the cartridge (202). 6. A fluid transfer device according to claim 1, characterized in that the first gear (504) rotates in unison with the first belt wheel (506) through a key connection, the second gear (505) rotating in unison with the second belt wheel (507) through a key connection. 7. A fluid transfer device according to claim 1, characterized in that the transmission unit (5) is configured such that a head of a first 27/27 support pillar (509) removably partly inserts into the first support board (501), an end of the fist support pillar (509) removably partly inserting into the body (1), an end of the second support board (502) removably mounting to the first support board (501), a bolt sequentially passing

5. Through the second support board (502), the first support board (501) and the first support pillar (509), and fastening these three to the body (1); two sides of a second support pillar (510) respectively removably connecting with the first support board (501) and the second support board (502), and two ends of the second support pillar (510) partly inserting into the io corresponding support board, the fist support board (501), the second support board (502) and the second support pillar (510) being fastened together by bolts.