EP3486483A1 - Pumpanlage, die eine pneumatische pumpe und ein ventil zur regulierung der pumpenzuführung von komprimiertem gas umfasst - Google Patents

Pumpanlage, die eine pneumatische pumpe und ein ventil zur regulierung der pumpenzuführung von komprimiertem gas umfasst Download PDF

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Publication number
EP3486483A1
EP3486483A1 EP18207300.7A EP18207300A EP3486483A1 EP 3486483 A1 EP3486483 A1 EP 3486483A1 EP 18207300 A EP18207300 A EP 18207300A EP 3486483 A1 EP3486483 A1 EP 3486483A1
Authority
EP
European Patent Office
Prior art keywords
valve
state
pump
pneumatic pump
actuator
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.)
Granted
Application number
EP18207300.7A
Other languages
English (en)
French (fr)
Other versions
EP3486483B1 (de
Inventor
Boussif KHALDI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Exel Industries SA
Original Assignee
Exel Industries SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Exel Industries SA filed Critical Exel Industries SA
Publication of EP3486483A1 publication Critical patent/EP3486483A1/de
Application granted granted Critical
Publication of EP3486483B1 publication Critical patent/EP3486483B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/02—Stopping, starting, unloading or idling control
    • F04B49/03—Stopping, starting, unloading or idling control by means of valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/24—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2489—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device
    • B05B7/2491—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas with means, e.g. a container, for supplying liquid or other fluent material to a discharge device an atomising fluid, e.g. a gas, being supplied to the discharge device characterised by the means for producing or supplying the atomising fluid, e.g. air hoses, air pumps, gas containers, compressors, fans, ventilators, their drives
    • 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
    • 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
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F04B49/103—Responsive to speed
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • 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
    • 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
    • F04B2201/00—Pump parameters
    • F04B2201/06—Valve parameters
    • 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
    • F04B2205/00—Fluid parameters
    • F04B2205/09—Flow through the pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2270/00—Control
    • F05B2270/30—Control parameters, e.g. input parameters
    • F05B2270/301—Pressure

Definitions

  • the present invention relates to a pumping installation, of the type comprising a pneumatic pump for pumping a fluid and a system for supplying the pneumatic pump with compressed gas, the supply system comprising a source of compressed gas and a fluidic connection connecting fluidically the source to the pneumatic pump.
  • the installation also relates to a device for projecting a coating product onto a surface to be coated, of the type comprising an applicator for spraying the coating product on the surface to be coated and a pumping installation for pumping the coating product. and feeding the applicator with said coating product.
  • These pumps are fed with a compressed gas, generally air, which is used to animate said pumps with a movement which will allow the suction of the coating product into the can and the delivery of the coating product in a fluidic connection. connecting the pump to one of the applicators of the installation.
  • the force provided by the compressed gas is sized to compensate for pressure losses due to the circulation of the coating product in the pump ducts and the discharge of this coating product, at the desired pressure, in the direction of the pump. applicator.
  • An object of the invention is thus to provide an economical and reliable solution capable of limiting the risk of runaway of a coating product pump. Another object of the invention is to allow retrofitting of existing installations with the proposed solution.
  • the subject of the invention is a pumping installation of the aforementioned type, in which the pumping installation also comprises a system for regulating the supply of the pneumatic pump with compressed gas, the said regulation system comprising a valve. mounted on the fluidic connection and switchable between a blocking state, in which the valve prevents the flow of compressed gas between the source and the pneumatic pump, and an on state, in which the valve allows the compressed gas flow between the source and the pneumatic pump.
  • the invention also relates to a projection installation of a coating product on a surface to be coated, of the aforementioned type, in which the pumping installation is constituted by a pumping installation as defined above.
  • the projection apparatus 10 shown on the Figure 1 is intended for projecting a fluid coating product 12, typically a paint, onto a surface to be coated (not shown).
  • the projection installation 10 comprises an applicator 14 for the application of the coating product 12 on the surface to be coated, a pumping installation 16 for pumping the coating product 12, and a fluidic connection 18 connecting fluidically the pumping installation 16 to the applicator 14 for feeding the applicator 14 with the coating product pumped by the pumping installation 16.
  • the applicator 14 is typically constituted by a spray gun. It comprises a coating material supply inlet 19, fluidly connected to the fluidic connection 18.
  • the pumping installation 16 comprises a reservoir 20 containing the coating product 12, a pneumatic pump 22 for pumping the coating product 12 contained in the reservoir 20, and a system 24 for supplying the pneumatic pump 22 with compressed gas.
  • the pumping installation 16 also comprises a containment chamber 25 in which the reservoir 20 and the pump 22 are arranged.
  • the reservoir 20 is typically constituted by a can.
  • the pneumatic pump 22 comprises, in known manner, a probe 26 inserted into the reservoir 20 and defining a suction orifice 28 for the coating product 12, a discharge orifice 30 for the coating product 12, fluidly connected to the fluidic connection 18 , a pneumatic motor (not shown) pulling its power from the expansion of a compressed gas and adapted to cause the movement of pumping members (not shown) to suck the coating product 12 through the suction port 28 and pushing it back to the discharge port 30, and, typically, a system (not shown) for controlling the inversion of the displacement of the pneumatic motor.
  • the pneumatic pump 22 also includes a supply port 32 for supplying the pump 22 with compressed gas.
  • the control system of the inversion of the displacement of the pneumatic motor comprises, for example, a distributor for alternately supplying two cavities of the engine with compressed gas so as to cause a reciprocating movement of the pneumatic motor, and end-of-the-end sensors. race to detect when the engine comes in end of movement and, in response, control the distributor so that it changes the motor cavity supplied with compressed gas.
  • the supply system 24 comprises a source 34 of compressed gas, a fluidic connection 36 fluidly connecting the source 34 to the supply port 32 of the pump 22, and a system 38 for regulating the supply of the pump 22 in compressed gas.
  • the source 34 is capable of supplying a compressed gas, for example compressed air.
  • the source 34 is typically constituted by a compressor, in particular an air compressor.
  • the control system 38 comprises a valve 40 mounted on the fluidic connection 36, outside the enclosure 25, said valve 40 being switchable between a blocking state, in which it prevents the flow of compressed gas between the source 34 and the pneumatic pump. 32, and an on state, in which it allows the circulation of compressed gas between the source 34 and the pneumatic pump 32.
  • the regulation system 38 also comprises a system 42 for automatically controlling the valve 40.
  • the fluidic connection 36 comprises an upstream section 37 between the source 34 and the valve 40, and a downstream section 39 between the valve 40 and the pump 22.
  • the valve 40 comprises a body 44 internally defining a passage 46 for the compressed gas, and a valve 48 mounted to move relative to the body 44 between a closed position, in which it closes the passage 46, and an open position, in which it releases the passage 46, the open position of the valve 48 corresponding to the on state of the valve 40, and the closed position of the valve 48 corresponding to the blocking state of the passage 46.
  • the valve 40 further comprises a member 50 for biasing the valve 48 to its closed position.
  • the passage 46 is through and opens out of the body 44 through an upstream orifice 52 fluidly connected to the upstream section 37 of the fluidic connection 36, and through a downstream orifice 54 fluidly connected to the downstream section 39 of the fluidic connection 36.
  • the upstream section 56 comprises a first rectilinear channel 60, oriented in a transverse direction T, and a second rectilinear channel 62, oriented in a longitudinal direction L perpendicular to the transverse direction T.
  • the downstream section 58 understands to it a third channel 64 rectilinear, oriented in the transverse direction T, a cavity 66 disposed longitudinally in the extension of the second channel 62, of greater cross section than the second channel 62, and a fluid connection 68 between the third channel 64 and the cavity 66.
  • the first channel 60 opens out of the body 44 through the upstream orifice 52
  • the third channel 64 opens out of the body 44 through the downstream orifice 54.
  • the second channel 62 opens into the cavity 66 and outside the body 44.
  • the body 44 also defines, at the junction between the upstream sections 56 and downstream 58, a seat 70 for the valve 48 in the closed position.
  • This seat 70 is, in the example shown, formed by a shoulder surrounding the orifice through which the second channel 62 opens into the cavity 66.
  • the valve 48 is movably mounted in translation in the longitudinal direction L relative to the body 44 between its open and closed positions.
  • the valve 48 is, in the example shown, integral with a shaft 72 engaged in the second channel 62, said shaft 72 comprising a narrow section 74, with a cross section less than 90% of that of the second channel 62 , and a wide section 76, of cross-section substantially complementary to that of the second channel 62: the shaft 72 thus forms with the second channel 62 a guide for the translational guidance of the valve 48 relative to the body 44.
  • the narrow section 74 is in particular interposed between the valve 48 and the wide section 76, the wide section 76 being at a distance from the valve 48 greater than the distance from the valve 48 to the first channel 60 when the valve 48 is in the open position, as visible on the Figure 2 .
  • the first channel 60 is not closed by the wide section 76 when the valve 48 is open.
  • a seal 78 is disposed around the wide portion 76, between said wide section 76 and the wall of the second channel 62. This prevents compressed gas from leaking out of the body 44 by the end through which the second channel 62 opens out of the body 44.
  • the valve 48 comprises an annular seal 80.
  • This annular seal 80 defines a bearing face 82 of the valve 48 against the seat 70 when the valve 48 is closed.
  • valve 48 is housed inside the cavity 66.
  • the return member 50 is, in the example shown, formed by a compression spring housed in the cavity 66, between the valve 48 and a bottom 84 of the cavity 66.
  • the valve 40 also comprises a metal plate 86 placed outside the body 44 and movable together with the valve 48 so as to occupy a position close to the body 44 when the valve 48 is closed and a position away from the body 44 when the valve 48 is open.
  • the counterplate 86 is aligned longitudinally with the valve 48, the valve 48 being interposed between the seat 70 and said counterplate 86.
  • the counterplate 86 is in particular integral in translation of the valve 48.
  • it is, in the example shown, made of material with a shaft 87 mounted, typically screwed onto the shaft 72, and extending through an opening 88 opening into the bottom 84 of the cavity 66 and outside the body 44.
  • a seal 89 surrounds said shaft 87 in the opening 88 and seals between the cavity 66 and the outside of the body 44.
  • the autopilot system 42 comprises a sensor 90 for monitoring a parameter, and an actuator 92 ( Figure 2 ) acting on the valve 40 to automatically switch the valve 40 from its state to its blocking state according to a signal produced by the sensor 90 and representative of the monitored parameter.
  • the sensor 90 comprises a first portion 94 disposed in the confinement enclosure 25, and a second portion 96 disposed outside the confinement enclosure 25.
  • the first part 94 is able to occupy a first state in normal time, and a second state when the monitored parameter satisfies a predetermined condition, said second state being specific to the case in which said predetermined condition is verified.
  • the parameter monitored here consists of a state of the pump 22.
  • the predetermined condition is then that the state of the pump 22 is a predetermined state, typically consisting of a packaged state of the pump 22.
  • the second part 96 is able to generate an electrical signal when the first part 94 is in its second state, and exclusively when said first part 94 is in its second state. So the second part 96 is fit to generate an electrical signal when the predetermined condition is verified, and exclusively when it is verified.
  • the actuator 92 is electrically connected to the sensor 90 to receive said electrical signal as it is generated.
  • an electrical connection 98 electrically connects the actuator 92 to the sensor 90.
  • the actuator 92 is constituted by an electromagnetic suction cup, in particular a permanent magnet electromagnetic suction cup, aligned longitudinally with the counterplate 86, the counterplate 86 being interposed between the valve 48 and the suction cup, said suction cup being arranged so that, when the valve 48 is in the open position, the counterplate 86 is pressed against said suction cup and that when the valve 48 is in the closed position, the counterplate 86 is away from said suction cup.
  • the actuator 92 thus has, in the absence of electric current, an active state in which it exerts on the counterplate 86 a magnetic force for biasing the counterplate 86 towards its pressed position against the actuator 92 and, when supplied with an electric current in an inactive state in which it does not exert such a biasing force on the plate 86.
  • the return member 50 and the magnetization force of the actuator 92 are dimensioned so that, when the counterplate 86 is pressed against the actuator 92, the biasing force exerted by the actuator 92 on the latter is greater than to the return force of the return member 50.
  • the actuator 92 is thus able to hold the valve 48 in its open position, the biasing force forming, when the valve 48 is in the open position, a retaining force of valve 48 in the open position.
  • the actuator 92 is adapted to automatically switch the valve 40 from its state to its blocking state when it receives the electrical signal generated by the second portion 96 of the sensor 90.
  • the return member 50 and the magnetization force of the actuator 92 are also dimensioned so that, when the valve 48 is closed, the biasing force exerted by the actuator 92 on the counterplate 86 is less than the force return of the return member 50. Thus, the actuator 92 is not able to move the valve 48 from its closed position to its open position.
  • the regulation system 38 also comprises, as visible on the Figure 2 a manually actuated button 100 for switching the valve 40 from its blocking state to its on state.
  • This button 100 is in particular formed by a push button aligned longitudinally with the valve 48, the seat 70 being interposed between the valve 48 and said knob 100.
  • a simple pressure on the button 100 causes the displacement of the valve 48 to the 70 away from the seat and, in this way, to bring the valve 48 in its open position.
  • the invention allows an easy retrofit and economic installation already existing, since it is sufficient to install the control system 38.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fluid-Driven Valves (AREA)
  • Reciprocating Pumps (AREA)
  • Magnetically Actuated Valves (AREA)
  • Nozzles (AREA)
EP18207300.7A 2017-11-20 2018-11-20 Pumpanlage, die eine pneumatische pumpe und ein ventil zur regulierung der pumpenzuführung von komprimiertem gas umfasst Active EP3486483B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1760919A FR3073906A1 (fr) 2017-11-20 2017-11-20 Installation de pompage comprenant une pompe pneumatique et une vanne pour reguler l'alimentation de la pompe en gaz comprime

Publications (2)

Publication Number Publication Date
EP3486483A1 true EP3486483A1 (de) 2019-05-22
EP3486483B1 EP3486483B1 (de) 2020-04-08

Family

ID=61027939

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18207300.7A Active EP3486483B1 (de) 2017-11-20 2018-11-20 Pumpanlage, die eine pneumatische pumpe und ein ventil zur regulierung der pumpenzuführung von komprimiertem gas umfasst

Country Status (6)

Country Link
US (1) US10954934B2 (de)
EP (1) EP3486483B1 (de)
JP (1) JP7228995B2 (de)
KR (1) KR20190058349A (de)
CN (1) CN110030183B (de)
FR (1) FR3073906A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748476A (zh) * 2019-11-14 2020-02-04 张云轩 一种空气压缩机气压气流控制方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124528A (fr) * 1955-04-05 1956-10-12 Pompe à liquide fonctionnant au gaz comprimé
US4934598A (en) * 1988-07-12 1990-06-19 Wagner International Ag Safety shut-down device for two-component sprayer systems
US5174722A (en) * 1991-08-09 1992-12-29 Bomar Corporation Safety shutdown circuit for pneumatic pump system
US20160377074A1 (en) * 2015-06-29 2016-12-29 Carlisle Fluid Technologies, Inc. Runaway valve system for a pump

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Publication number Priority date Publication date Assignee Title
JPS5667380U (de) * 1979-10-29 1981-06-04
JPH067890B2 (ja) * 1987-02-04 1994-02-02 倉敷紡績株式会社 循環▲ろ▼過システムのモニタ装置
US4981418A (en) * 1989-07-25 1991-01-01 Osmonics, Inc. Internally pressurized bellows pump
CN1257353C (zh) * 2001-08-31 2006-05-24 工学博士马里奥·科扎尼有限责任公司 对压缩机或类似物的大截面流量进行控制的阀
US6640556B2 (en) * 2001-09-19 2003-11-04 Westport Research Inc. Method and apparatus for pumping a cryogenic fluid from a storage tank
US9158308B2 (en) * 2011-05-13 2015-10-13 Fluke Corporation Apparatus using electronically-controlled valves
US20120315163A1 (en) * 2011-06-13 2012-12-13 Mi Yan Air-driven hydraulic pump with pressure control
CN102758768A (zh) * 2012-07-23 2012-10-31 王文海 水泵出口气动蝶阀系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1124528A (fr) * 1955-04-05 1956-10-12 Pompe à liquide fonctionnant au gaz comprimé
US4934598A (en) * 1988-07-12 1990-06-19 Wagner International Ag Safety shut-down device for two-component sprayer systems
US5174722A (en) * 1991-08-09 1992-12-29 Bomar Corporation Safety shutdown circuit for pneumatic pump system
US20160377074A1 (en) * 2015-06-29 2016-12-29 Carlisle Fluid Technologies, Inc. Runaway valve system for a pump

Also Published As

Publication number Publication date
JP2019094898A (ja) 2019-06-20
EP3486483B1 (de) 2020-04-08
CN110030183B (zh) 2022-05-06
FR3073906A1 (fr) 2019-05-24
JP7228995B2 (ja) 2023-02-27
KR20190058349A (ko) 2019-05-29
US10954934B2 (en) 2021-03-23
CN110030183A (zh) 2019-07-19
US20190154028A1 (en) 2019-05-23

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