公开(公告)号：WO1994028304A1

公开(公告)日：1994-12-08

申请号：PCT/US1994005907

申请日：1994-05-25

Applicant: GRACO INC.

Inventor： GRACO INC. ,  MURPHY, Edward, P.

IPC: F04B21/00

CPC classification number: F04B53/101 ,  F04B53/1087 ,  F05C2201/046 ,  F05C2225/06 ,  Y10T137/7912

Abstract: A liquid pump (10) adapted for pumping liquids containing high percentages of solids in suspension, including a foot valve (22) and pumping chamber, and having an insert (32) in the pumping chamber adjacent the foot valve seat, the insert having a resilient inner surface (40) and an outer metallic rim (34), the inner resilient surface forming flanges about the edges of the rim, and the insert being clamped between the valve seat and another member.

Abstract translation: 一种液体泵（10），其适于泵送包含高百分比的悬浮液中固体的液体，包括底阀（22）和泵送室，并且在靠近脚阀座的泵送室中具有插入件（32），该插入件具有 弹性内表面（40）和外金属边缘（34），所述内弹性表面围绕所述边缘的边缘形成凸缘，并且所述插入件夹紧在所述阀座和另一构件之间。

公开(公告)号：WO1990006445A1

公开(公告)日：1990-06-14

申请号：PCT/US1989005340

申请日：1989-11-22

Applicant: GRACO INC.

Inventor： GRACO INC. ,  KVINGE, Daniel, John ,  POWERS, Frederick, Alan ,  LEHRKE, Kenneth, E.

IPC: F04B39/06

CPC classification number: F04B53/08 ,  F01B31/02 ,  F04B9/125

Abstract: A silencing system is provided for an air-operated pump (10) which also eliminates icing of the pump at higher cycle rates and humidities. The exhaust (12) from the air motor (10) powers an air flow inducer (24) to induce flow of relatively warm ambient air (28). The induced flow of ambient air (28) is drawn across cold components (41, 20, 16) of the air motor (10), and the mixed (ambient and exhaust air) exit stream (34) routed away from the air motor. The relatively warm mixed air exhaust flow (34) also allows noise reduction by conventional acoustical techniques (38) without suffering performance degradation due to icing.

公开(公告)号：WO1992011511A1

公开(公告)日：1992-07-09

申请号：PCT/US1991009440

申请日：1991-12-17

Applicant: GRACO INC.

Inventor： GRACO INC. ,  LUNZER, Lawrence, J. ,  BRAJDICH, Anthony, G.

IPC: G01F03/10

CPC classification number: B67D7/20 ,  G01F3/10 ,  G01F15/063 ,  G01F15/068

Abstract: An electrical isolation system for monitoring liquid flow rate from pumping equipment (50) housed within a confined enclosure (40), wherein the flow rate signals (10) are developed into optical signals which are conveyed via fiber optic cables (24, 25) from within the enclosure to control modules outside the enclosure. The control for operating the system may thereby be wholly electrically isolated from the pumping equipment.

公开(公告)号：WO1984001684A1

公开(公告)日：1984-04-26

申请号：PCT/US1983001633

申请日：1983-10-19

Applicant: GRACO INC.

Inventor： GRACO INC. ,  LEHRKE, Kenneth, E.

IPC: H05B01/02

CPC classification number: H05B3/56 ,  G05D23/19

Abstract: In coating systems wherein multiple coating components are separately applied by a hose to the point of application and are mixed and applied by a common applicator gun to a surface, e.g., the application of a urethane foam coating to a building roof, the quality of the applied coating is dependent upon the temperature of the coating components as well as the temperature of the surface to be coated, the latter temperature being proportional to the ambient temperature in the vicinity of the point of application. To insure optimum coating quality, the invention incorporates into the hose (16) a heating tape (40) having a resistance heating element (44) closely controlled by an electronic temperature control circuit (18) responsive to both an ambient temperature sensor (22) comprising temperature sensitive resistance (R3) and a hose simulator (60) separated from the hose (16) and having heat loss and absorption characteristics similar to the hose (16) and including a temperature sensing element (70) potted together with a resistor (58) in a mass of epoxy compound (59) to form a module (62) wrapped in an insulation blanket (64). The resistor (58) and sensing element (70) are spaced apart a predetermined distance selected to provide a degree of heat correlation comparable to the rate at which the hose (16) accepts heat from the heating tape (40) so that the temperature of the simulator (60) tracks the temperature of the hose (16) nearly identically.

公开(公告)号：WO1983004465A1

公开(公告)日：1983-12-22

申请号：PCT/US1983000763

申请日：1983-05-16

Applicant: GRACO INC.

Inventor： GRACO INC. ,  LEHRKE, Kenneth, E.

IPC: H05B01/02

CPC classification number: H05B3/82 ,  B05B7/22 ,  F24H1/121 ,  F24H9/2014 ,  G05D23/1913 ,  G05D23/24

Abstract: An electric fluid flow heating apparatus for heating of paints, lacquers, varnishes and other coating materials in industrial coating operations to control viscosity of a coating material being applied by a spraying apparatus utilizes a pair of low mass electric resistance heating elements (14) located within the legs of a U-shaped fluid flow passageway defining hollow tube (10) havig an inlet manifold (16) and an outlet manifold (18). A fluid mixer (12), formed as a helical metallic spring member having diametrically opposed, axially extending baffles (32) projecting inwardly from the outer diameter of the helical member surrounds each heating element (14) and causes the flow of liquid to follow a generally helical path directed radially inwardly at the baffles (32), to produce continuous mixing of the liquid. Overtemperature safety switch (26) is attached to the outside of the tube (10). The outlet manifold (18) mounts a temperature probe (25) having a thermistor (34) embedded in a conical housing (36) projecting into the fluid flow path and contacting the heating element (14). A proportional-control, slope compensated, electronic temperature control circuit monitors temperature conditions across the flow path sensed by the temperature probe (25) as well as the ambient workplace temperature sensed by an ambient temperature compensator (R3) and regulates the output of the heating elements (14) to provide precise temperature control under varying static and dynamic liquid flow conditions and changing ambient workplace temperature conditions. The control circuit reduces the watt density of the heating elements (14) under conditions of complete static flow to prevent development of excessive liquid temperature.

Abstract translation: 一种用于在工业涂料操作中加热涂料，漆，清漆和其它涂料的电流体流动加热装置，以控制由喷涂装置施加的涂料的粘度利用位于内部的一对低质量电阻加热元件（14） 形成中空管（10）的U形流体流动通道的腿部进入入口歧管（16）和出口歧管（18）。 形成为螺旋状金属弹簧构件的流体混合器（12）形成为从螺旋构件的外径向内突出的径向相对的轴向延伸的挡板（32），围绕每个加热元件（14）并使液体流动遵循 大致螺旋形的径向向内指向挡板（32），以产生液体的连续混合。 过热安全开关（26）连接到管（10）的外部。 出口歧管（18）安装温度探针（25），该温度探针（25）具有嵌入锥形壳体（36）中的热敏电阻（34），该锥形壳体突出到流体流动路径中并接触加热元件（14）。 比例控制，斜坡补偿的电子温度控制电路监测由温度探测器（25）感测的流动路径上的温度条件以及由环境温度补偿器（R3）感测的环境工作场所温度，并调节加热的输出 元件（14），以在不同的静态和动态液体流动条件下提供精确的温度控制，并改变工作环境温度条件。 控制电路在完全静态流动的条件下降低了加热元件（14）的瓦特密度，以防止液体温度过高。

公开(公告)号：WO1991002158A1

公开(公告)日：1991-02-21

申请号：PCT/US1990003786

申请日：1990-07-05

Applicant: GRACO INC.

Inventor： GRACO INC. ,  LEHRKE, Kenneth, E. ,  McFADDEN, Bruce, A.

IPC: F04B23/04

CPC classification number: F04B11/0066 ,  F04B1/02 ,  F04B23/06

Abstract: A multiple piston cylinder reciprocating pump (10) is provided with a cam drive (18) such that the sum of the velocities during the pumping strokes off all of the cylinders is generally constant. The leak free design is provided by utilizing a diaphragm (36) attached to the piston (34) between the main seal assembly and the cam (18). A flow through intake design is provided which flows incoming material around the piston (34) between the diaphragm (36) and the main seal to prevent the build-up and hardening of material on the piston (34) and in the seal area. The intake (40) and exhaust (56) passages are arranged such that air pockets cannot be formed and any air bubbles which find their way into the pump will rise upwardly out of the pump without restriction.

Abstract translation: 多活塞缸往复泵（10）设置有凸轮驱动器（18），使得在所有气缸的泵送冲程期间的速度之和通常是恒定的。 通过利用附接到主密封组件和凸轮（18）之间的活塞（34）的隔膜（36）来提供无泄漏设计。 提供了一种通过进气设计的流动，其使进入的材料围绕隔膜（36）和主密封件之间的活塞（34）流动，以防止活塞（34）和密封区域中的材料积聚和硬化。 进气口（40）和排气通道（56）排列成使得不能形成气袋，并且进入泵的任何气泡都将向上升出泵而不受限制。

公开(公告)号：WO1985001455A1

公开(公告)日：1985-04-11

申请号：PCT/US1984001598

申请日：1984-10-03

Applicant: GRACO INC.

Inventor： GRACO INC. ,  ROBISCH, Herman ,  KROLL, Arthur, T.

IPC: B05B05/04

CPC classification number: B05B5/0415 ,  B05B3/1064 ,  B05B3/1092 ,  B05B5/04 ,  B05B5/0407 ,  B05B5/0426 ,  B05B5/0533

Abstract: A rotary atomizer spray painting device (10) having a nonconductive fixed, axial tube (20) for feeding paint, and having a nonconductive rotor (17) supported for rotation in a nonconductive housing (12) about the tube on air bearings or nonconductive ball bearings, and having turbine drive blades proximate one end thereof, the rotable rotor (17) supported inside of a nonconductive housing (12) which has a high voltage electrical path therethrough, electrically connected to one or more symmetrically spaced forwardly projecting needle electrodes (50), the rotable rotor being fixedly attached to a nonconductive forwardly projecting bell-shaped atomizer (14), the housing having pressurized air opening (38) for directing air in driving relationship to the turbine blades. The nonconductive design eliminates the danger of the atomizer picking up and storing high amounts of electrical energy, which poses a danger when such charged components inadvertently contact people or nearby objects.

公开(公告)号：WO1984000706A1

公开(公告)日：1984-03-01

申请号：PCT/US1983001183

申请日：1983-07-29

Applicant: GRACO INC.

Inventor： GRACO INC. ,  SCHAEFER, Thomas, J.

IPC: B05B07/04

CPC classification number: B29B7/7678

Abstract: A plural component dispensing nozzle having internal passages (46, 47, 48, 49) for the introduction of at least two components for mixing and dispensing, and having a one piece mixing chamber (40) with impingement orifices (66, 68) axially spaced along the chamber, and having formed as a part thereof sealing flanges (52, 54, 56) to develop the fluid flow passages into the mixing chamber, and to provide an isolation seal between the plural components as well as fluid seals between the flow passages and the nozzle.