WO2024201212A1 - Bomba de piston con valvulas correderas de escape rapido - Google Patents
Bomba de piston con valvulas correderas de escape rapido Download PDFInfo
- Publication number
- WO2024201212A1 WO2024201212A1 PCT/IB2024/052636 IB2024052636W WO2024201212A1 WO 2024201212 A1 WO2024201212 A1 WO 2024201212A1 IB 2024052636 W IB2024052636 W IB 2024052636W WO 2024201212 A1 WO2024201212 A1 WO 2024201212A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- quick exhaust
- piston
- valves
- piston pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B3/00—Reciprocating-piston machines or engines with cylinder axes coaxial with, or parallel or inclined to, main shaft axis
- F01B3/0082—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/068—Cooling; Heating; Prevention of freezing prevention of freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/08—Actuation of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
- F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
- F04B39/1026—Adaptations or arrangements of distribution members the members being disc valves without spring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
- F04B9/123—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber
- F04B9/125—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having only one pumping chamber reciprocating movement of the pumping member being obtained by a double-acting elastic-fluid motor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B5/00—Machines or pumps with differential-surface pistons
- F04B5/02—Machines or pumps with differential-surface pistons with double-acting pistons
Definitions
- the present invention relates to a piston pump with quick exhaust sliding valves, which allows the air coming from the air piston chambers to be evacuated directly from each chamber to the atmosphere, without needing to travel the return path to said main distributor valve to exit to the atmosphere, avoiding the generation of ice in the main pneumatic distributor drive valve, which is used in pneumatically driven reciprocating piston pumps.
- the use of quick exhaust valves improves the performance of the pump by reducing the resistance to the passage of air (or loss of load) through the internal ducts of the engine, since a large part of these paths are avoided by directly evacuating the piston chambers to the atmosphere, reducing compressed air consumption.
- This invention has its application within the industry sector of pneumatically operated pumps for supplying pressurized fluids, such as hydrocarbons, chlorinated hydrocarbons, acids, bases, oils, greases, paints, varnishes, sealants, silicones, glues and other chemical products used in industrial processes.
- pressurized fluids such as hydrocarbons, chlorinated hydrocarbons, acids, bases, oils, greases, paints, varnishes, sealants, silicones, glues and other chemical products used in industrial processes.
- the invention of the quick exhaust valve with slide has its application in any compressed air system in pneumatic actuators of all types, piston and membrane pumps, motors and pneumatic circuits since they can be incorporated into said systems to gain performance, avoid freezing or reduce dimensions.
- the pneumatically operated piston pumps for transferring pressurized fluids existing on the market mostly have mechanisms that do not guarantee the extraction of air from the air piston chambers without causing the main air distribution valve to freeze, under certain operating conditions, such as medium/high pressures, continuous operation and compressed air that is not adequately dried.
- the sudden expansion of this compressed air causes the temperature inside the engine, and therefore also in the main air distribution valve, to drop below the freezing point of the moisture that the compressed air may contain, producing ice that, in continuous operation, can block the air passages and stop or stall the piston pump of the pneumatic pump.
- Some models on the market have a mechanism by which, through a controlled leak of compressed air, with a temperature higher than that of air at atmospheric pressure, from the inlet to the outlet of the main air distribution valve, they allow the temperature at the outlet not to drop below the freezing point.
- This method causes excessive air consumption and, in certain circumstances of continuous work at high pressures, the energy supplied is not sufficient and the main air distribution valve also freezes.
- This section is unaware of the existence of a pneumatic piston pump for fluid transfer where the air evacuated from the air piston chambers exits directly from said chambers to the environment through a quick release valve that prevents said air from returning to the main air distribution valve and causing it to freeze and, consequently, slow down or even stop and stall the pump.
- the quick release slide valves proposed by the present invention are new and solve and improve two problems of the quick release valves currently existing, on the one hand, they eliminate the possibility of misalignment of its mobile element, thanks to a slide type design that ensures the guidance of said mobile element, on the other hand, it allows the compressed air passage section to be increased, reducing the pressure loss and improving the performance of the valve with respect to the designs of the same size currently existing.
- the pneumatic motor that drives the piston pump has a power piston that separates the two air chambers that compose it and moves alternately from one chamber to the other causing the movement of the pump.
- the pneumatic motor also has a compressed air inlet to a main air distribution valve, which introduces compressed air alternately into the chambers of the air piston to cause its alternating movement aided by the action of the limit switch sensors.
- the quick exhaust valves are located in the communication ports with both chambers of the piston and the air piston.
- the air piston is a piston pump with the purpose of evacuating compressed air from the piston chambers of the piston pump without passing through the main compressed air distributor valve of the engine. Two quick-release valves are required for each pneumatically operated piston pump: - one of them evacuates the air from the upper chamber of the air piston and, the other, - evacuates the air from the lower chamber of the air piston.
- both chambers have their own air evacuation valve directly to the outside, preventing said air to be evacuated from having to pass through the main air distributor valve and preventing the sudden expansion of said compressed air from causing the generation of ice in said main distributor valve that could prevent its normal operation and its stalling, and also reducing the pressure loss of the extraction of compressed air from the engine to the atmosphere.
- Quick release valves with a slide system have a mobile element that has a double function: on the one hand, when it is in the air inlet position, it allows air to enter the corresponding chamber of the air piston; on the other hand, when it is in the air evacuation position, it allows the air in the air piston chamber to exit directly into the atmosphere through the pump's silencing system and, in turn, prevents said air from having to return to the main distributor valve before exiting into the environment.
- the invention consists of a piston pump with two quick release valves with a slide mechanism, each of them composed of: x a mobile part.
- Said mobile part can consist of a single piece of elastomeric material or an assembly composed of a rigid structure and two elastomeric sealing elements assembled to it.
- This mobile element alternates between two positions depending on whether the compressed air is entering or leaving the air piston chamber, closing the corresponding air port (either the one that communicates with the main distributor valve or the one that communicates with the atmosphere) and leaving the other open, alternatively.
- x a stationary sleeve.
- the sleeve consists of a rigid piece that houses the mobile element and serves as a guide, in addition to providing a sealing face in the air passage port to the atmosphere.
- this invention improves them by allowing the elimination of obstacles in the passage of air from the main air distributor valve to the air piston chamber. This is achieved with a mobile element of greater length than usual, allowing it to seal against a surface located outside the geometric space between the port of the air piston chamber and the port of the main distributor valve.
- the present piston pump with a quick release valve has one of its applications in pneumatically driven reciprocating piston pumps for fluid transfer.
- the piston pump with quick release valve allows the air stored in the piston chambers of the piston pump pneumatic motor to be evacuated directly into the environment without passing through the internal ducts of the motor or the main air distributor valve, and without causing it to freeze. This prevents the formation of ice in the motor air ducts and in its main distributor valve, which can cause the piston pump to stop and stall.
- the piston pump (fig.1a) consists of: .- a compressed air inlet connection (1), .- a main air distribution valve (2), .- two piston end-of-stroke sensors (3a and 3b), .- air piston chambers (4a and 4b), .- quick exhaust valves with a spool mechanism (fig.4a) consist of: .- compressed air inlet port (7), .- air outlet port to atmosphere (8), .- air motor port (9), .- movable element of a quick exhaust valve with a spool mechanism (10), .- stationary element of a quick exhaust valve with a spool mechanism (11), .- body/housing of a quick exhaust valve with a spool mechanism (12), DESCRIPTION OF THE DRAWINGS
- a compressed air inlet connection (1)
- .- a main air distribution valve (2) .- two piston end-of-stroke sensors (3a and 3b), .- air piston chambers (4a and 4b), .- quick exhaust valve
- FIG. 1a shows a pneumatic diagram of the pneumatically operated piston pump with quick exhaust valves with a slide mechanism.
- - Fig. 1b shows a longitudinal section of the piston pump of a pneumatically operated piston pump with quick exhaust valves with a slide mechanism.
- - Fig. 2 shows a pneumatic diagram of the piston pump of a pneumatically operated piston pump with quick exhaust valves with a slide mechanism, operating in a downward direction.
- - Fig. 3 shows a pneumatic diagram of the piston pump of a pneumatically operated piston pump with quick exhaust valves with a slide mechanism, operating in an upward direction.
- - Fig. 4a shows a diagram of the quick exhaust valve with its air inlet port, air outlet port, motor port, moving element, stationary element and casing.
- FIG. 4b shows a longitudinal section of the quick exhaust valve with its air inlet port, air outlet port, motor port, movable element, stationary element and housing.
- - Fig. 5 shows a diagram of the quick exhaust valve with slide in the air evacuation position.
- - Fig. 6 shows a diagram of the quick exhaust valve with slide in the air inlet position.
- fig 1a The operating diagram of the piston pump pneumatic motor is shown in figure (fig 1a), a sectional view of which is shown in figure (1b) with all the systems that compose it in the position of filling the upper piston chamber (4a) and emptying the lower piston chamber (4b).
- the main air distribution valve (2) When the main air distribution valve (2) is in the downward position (fig 2), it sends compressed air to the air inlet of the upper quick exhaust valve (5a) and communicates the air inlet of the lower quick exhaust valve (5b) to the atmosphere.
- the dynamic air pressure is responsible for positioning the movable element of the upper quick exhaust valve (5a) to allow air to pass into the upper air piston chamber (4a), and for positioning the movable element of the lower quick exhaust valve (5b) to evacuate air from the lower air piston chamber (4b) to the atmosphere through the silencer (6) preventing said evacuated air from returning to the main distributor valve (2), protecting it against temperature drops and freezing. Since the upper air piston chamber (4a) receives compressed air and the lower air piston chamber (4b) is connected to the atmosphere, the air chamber piston (7) moves downwards.
- the lower limit switch sensor (3b) When the air chamber piston (7) reaches its downward limit switch, the lower limit switch sensor (3b) is actuated by the air piston (7), causing the main distributor valve (2) to change to its upward position as shown in the figure (fig 3).
- the main air distribution valve (2) When the main air distribution valve (2) is in the upward position (fig 3), it sends compressed air to the air inlet of the lower quick exhaust valve (5b) and communicates to the atmosphere the air inlet of the upper quick exhaust valve (5a).
- the dynamic air pressure is responsible for positioning the movable element of the lower quick exhaust valve (5b) to pass air to the lower air piston chamber (4b), and for positioning the movable element of the upper quick exhaust valve (5a) to evacuate air from the upper air piston chamber (4a) to the atmosphere through the silencer (6) preventing said evacuated air from returning to the main distribution valve (2), protecting it against temperature drops and freezing. Since the lower air piston chamber (4b) receives compressed air and the upper air piston chamber (4a) is connected to the atmosphere, the air piston moves upwards.
- the limit switch sensors (3a and 3b) can be of any type that allows the main distributor valve (2) to be actuated and can have any type of detection technology such as pneumatic, electric or mechanical.
- FIG. 4b A sectional view of a quick exhaust valve with a slide mechanism is shown in figure (fig 4b), the housing of which is part of one of the parts of the piston pump.
- the quick exhaust valve with a slide mechanism (5a, 5b) has two operating positions which alternate with each change in position of the main air distribution valve (2).
- One of these two positions, the air evacuation position (fig 5) occurs when there is no compressed air in the compressed air inlet port (7), because the main distribution valve (2) is in the position that connects the port (7) of the quick exhaust valve in question with the atmosphere.
- the air piston chamber (4a or 4b) to which the quick exhaust valve with a slide mechanism (5a or 5b) is connected has compressed air that must be evacuated to the atmosphere.
- Said compressed air enters the quick exhaust valve with a slide mechanism through the port of the air motor (9), and the dynamic pressure of the air pushes the mobile element (10) until it closes the compressed air inlet port (7).
- the air outlet port to the atmosphere (8) is opened, so that the compressed air that is in the piston chamber (4a or 4b) is evacuated to the atmosphere.
- the other operating position of the quick exhaust valve with a slide mechanism (5a, 5b), in which the air inlet occurs is represented in the figure (fig 6), it occurs when there is compressed air in the compressed air inlet port (7), because the main distributor valve (2) has been positioned to communicate air pressure to this quick exhaust valve with a slide mechanism (5a or 5b).
- the compressed air in the air inlet port (7) pushes the movable element (10) and the dynamic pressure of the air causes said movable element (10) to be positioned and maintained in the position shown in the image (fig 6) and the flexible part of the movable element to deform elastically, allowing air to pass through.
- the compressed air passes to the air motor through the motor port (9), while simultaneously the movable element (10) closes the air outlet port to the atmosphere (8).
- the passage from one position to another of the movable element (10) is always a guided linear movement, as a part of said movable element (10) remains inside the stationary element (11), like a prismatic or sliding system, with a reduced clearance between both parts to guarantee the guiding effect. This allows to avoid misalignments of the movable element (10) that could cause malfunction due to poor sealing or deterioration of the same (10).
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
- Check Valves (AREA)
Abstract
Description
Claims
Priority Applications (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020257008632A KR20250166839A (ko) | 2023-03-24 | 2024-03-19 | 퀵 배기 슬라이드 밸브가 있는 피스톤 펌프 |
| CN202480003987.4A CN119790216A (zh) | 2023-03-24 | 2024-03-19 | 带快速排气滑阀的活塞泵 |
| CA3263474A CA3263474A1 (en) | 2023-03-24 | 2024-03-19 | PISTON PUMP WITH RAPID EXHAUST DRAWER DISTRIBUTORS |
| US19/111,110 US20260092600A1 (en) | 2023-03-24 | 2024-03-19 | Piston pump with quick exhaust slide valves |
| AU2024246451A AU2024246451A1 (en) | 2023-03-24 | 2024-03-19 | Piston pump with quick exhaust slide valves |
| JP2025511602A JP2026508714A (ja) | 2023-03-24 | 2024-03-19 | 急速排気スライド弁付きピストンポンプ |
| EP24778378.0A EP4549699A4 (en) | 2023-03-24 | 2024-03-19 | PISTON PUMP WITH RAPID EXHAUST DRAWER DISTRIBUTORS |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES202330247A ES2984137B2 (es) | 2023-03-24 | 2023-03-24 | Bomba de piston con valvulas correderas de escape rapido |
| ESP202330247 | 2023-03-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024201212A1 true WO2024201212A1 (es) | 2024-10-03 |
Family
ID=92903822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2024/052636 Ceased WO2024201212A1 (es) | 2023-03-24 | 2024-03-19 | Bomba de piston con valvulas correderas de escape rapido |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US20260092600A1 (es) |
| EP (1) | EP4549699A4 (es) |
| JP (1) | JP2026508714A (es) |
| KR (1) | KR20250166839A (es) |
| CN (1) | CN119790216A (es) |
| AU (1) | AU2024246451A1 (es) |
| CA (1) | CA3263474A1 (es) |
| ES (1) | ES2984137B2 (es) |
| WO (1) | WO2024201212A1 (es) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB412960A (en) * | 1933-01-02 | 1934-07-02 | Dewandre Co Ltd C | Improvements in or relating to fluid-pressure relays for controlling the transmission gear of marine engines |
| US4325285A (en) * | 1978-05-31 | 1982-04-20 | Rudolf Hubner GmbH & Co. | Compressed air motor |
| JPH05111843A (ja) * | 1990-11-30 | 1993-05-07 | Smc Corp | 空気圧または真空圧利用のハンドツール |
| NO311452B1 (no) * | 2000-02-14 | 2001-11-26 | Schmidt & Co Gmbh Kranz | Pneumatisk drevet hydraulikkpumpe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR76804E (fr) * | 1959-07-11 | 1961-12-08 | Injecteur de liquide à haute pression | |
| US4189983A (en) * | 1977-01-04 | 1980-02-26 | Zahnradfabrik Friedrichshafen Ag | Servomotor pressure control responsive to piston travel |
-
2023
- 2023-03-24 ES ES202330247A patent/ES2984137B2/es active Active
-
2024
- 2024-03-19 KR KR1020257008632A patent/KR20250166839A/ko active Pending
- 2024-03-19 JP JP2025511602A patent/JP2026508714A/ja active Pending
- 2024-03-19 CA CA3263474A patent/CA3263474A1/en active Pending
- 2024-03-19 US US19/111,110 patent/US20260092600A1/en active Pending
- 2024-03-19 EP EP24778378.0A patent/EP4549699A4/en active Pending
- 2024-03-19 AU AU2024246451A patent/AU2024246451A1/en active Pending
- 2024-03-19 CN CN202480003987.4A patent/CN119790216A/zh active Pending
- 2024-03-19 WO PCT/IB2024/052636 patent/WO2024201212A1/es not_active Ceased
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB412960A (en) * | 1933-01-02 | 1934-07-02 | Dewandre Co Ltd C | Improvements in or relating to fluid-pressure relays for controlling the transmission gear of marine engines |
| US4325285A (en) * | 1978-05-31 | 1982-04-20 | Rudolf Hubner GmbH & Co. | Compressed air motor |
| JPH05111843A (ja) * | 1990-11-30 | 1993-05-07 | Smc Corp | 空気圧または真空圧利用のハンドツール |
| NO311452B1 (no) * | 2000-02-14 | 2001-11-26 | Schmidt & Co Gmbh Kranz | Pneumatisk drevet hydraulikkpumpe |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP4549699A4 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4549699A1 (en) | 2025-05-07 |
| JP2026508714A (ja) | 2026-03-12 |
| ES2984137A1 (es) | 2024-10-28 |
| ES2984137B2 (es) | 2025-09-23 |
| CA3263474A1 (en) | 2025-06-06 |
| US20260092600A1 (en) | 2026-04-02 |
| AU2024246451A1 (en) | 2025-01-30 |
| KR20250166839A (ko) | 2025-11-28 |
| CN119790216A (zh) | 2025-04-08 |
| EP4549699A4 (en) | 2026-04-22 |
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