CN117404270B - Portable electronic control pressure regulating and pressure releasing structure on spraying machine - Google Patents
Portable electronic control pressure regulating and pressure releasing structure on spraying machine Download PDFInfo
- Publication number
- CN117404270B CN117404270B CN202311397142.1A CN202311397142A CN117404270B CN 117404270 B CN117404270 B CN 117404270B CN 202311397142 A CN202311397142 A CN 202311397142A CN 117404270 B CN117404270 B CN 117404270B
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- pressure
- valve
- pressure regulating
- rod
- trigger
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 71
- 238000005507 spraying Methods 0.000 title claims abstract description 44
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 37
- 230000008859 change Effects 0.000 claims description 19
- 239000003973 paint Substances 0.000 claims description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0413—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material with reciprocating pumps, e.g. membrane pump, piston pump, bellow pump
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- 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
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- 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
- F04B49/08—Regulating by delivery pressure
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Nozzles (AREA)
Abstract
The portable electric control pressure regulating and pressure releasing structure for the spraying machine consists of a plunger pump, a power motor, a feeding pipe, a discharging pipe, a touch valve, a pressure regulating valve, a pressure releasing valve and a pressure regulating and releasing executing device, wherein the pressure regulating and releasing executing device comprises an executing motor; the trigger valve is controlled by an electric control program, single trigger operation is carried out when the spraying machine is used, the control of the pressure regulating valve and the pressure releasing valve is completed by the executing motor, the pressure releasing or the selection of the pressure gear is carried out through the knob switch on the spraying machine, the executing motor is stopped at the set position, the pressure in the pump cavity can reach the desired set value, for a user, the functions of pressure releasing and pressure regulating can be carried out only through the knob switch on one spraying machine, the operation and the use of the spraying machine are very convenient, and the user is convenient.
Description
Technical Field
The invention relates to a portable electric control pressure regulating and relieving structure on a spraying machine.
Background
The spraying machine is used for spraying paint and mainly comprises a paint bucket, a plunger pump and a spray gun head, wherein the plunger pump realizes the processes of sucking and pressing paint through the reciprocating motion of a plunger, and further pumps the paint of the paint bucket to the spray gun head in a unidirectional way.
In the existing household spraying machine, a trigger valve, a pressure regulating valve and a pressure relief valve are generally configured, and the trigger valve prevents the steel balls of the one-way valve on the feeding pipe from being adhered to influence the suction of the plunger pump when the spraying machine is not used for a long time through touching the steel balls of the one-way valve at the feeding pipe; the pressure regulating valve enables the pressure of a pump cavity of the plunger pump to reach a set value through adjustment, namely the working pressure and the holding pressure of the pump cavity reach the set values so as to meet the actual requirements of paint with different viscosities; the pressure release valve is used for pressure release and backflow of the pump cavity of the plunger pump, namely after the spraying machine is used, partial paint in the pump cavity of the plunger pump flows back into the paint bucket through the pressure release valve, and the pressure in the pump cavity is restored to a normal pressure state.
In the existing spraying machine structure, the trigger valve, the pressure regulating valve and the pressure relief valve basically adopt mutually independent design concepts, namely, the trigger valve, the pressure regulating valve and the pressure relief valve are independently controlled by independent control pieces, so that before a user uses the spraying machine, the user needs to read a product instruction book to know the functions of the control pieces, and in the use process, certain misoperation possibility exists, namely, the existing spraying machine has the problem of inconvenient operation, and the problem is often to be improved so as to reduce the operation difficulty of the user.
Disclosure of Invention
Aiming at the defects existing in the problems, the invention provides a portable electric control pressure regulating and relieving structure on a spraying machine.
In order to achieve the above purpose, the present invention provides a portable electrically controlled pressure regulating and relieving structure for a spraying machine, comprising:
the plunger pump is used for sucking and pressing paint and comprises a pump body and a plunger which reciprocates in a pump cavity of the pump body;
A power motor for providing a driving force for driving the plunger to reciprocate;
The feeding pipe and the discharging pipe are connected to the pump body and communicated with the pump cavity, and a first one-way valve and a second one-way valve are respectively arranged at the feeding pipe and the discharging pipe;
the trigger valve is arranged on the pump body and corresponds to the first one-way valve in position, a movable trigger rod is arranged in the trigger valve, and the trigger rod can axially move to trigger the steel ball of the first one-way valve;
The pressure regulating valve is arranged on the pump body and comprises a pressure regulating valve seat, a first valve rod arranged in the pressure regulating valve seat and a spring a supporting the first valve rod, the inner end of the first valve rod stretches into the pump cavity, and the outer end of the first valve rod stretches out of the pressure regulating valve seat;
The pressure relief valve is arranged on the pump body and comprises a pressure relief valve seat, a second valve rod arranged in the pressure relief valve seat and a spring b for supporting the second valve rod, the inner end of the second valve rod stretches into the pump cavity, the outer end of the second valve rod stretches out of the pressure relief valve seat, a backflow hole is further formed in the pressure relief valve seat, and a backflow joint is further formed on the pump body and corresponds to the backflow hole in position;
the pressure regulating and pressure releasing executing device is used for executing pressure regulating and pressure releasing operations of the spraying machine, when the pressure regulating and pressure releasing executing device is used for monitoring the position of the first valve rod and controlling the start and stop of the power motor so that the pressure of the pump cavity reaches a set value, and when the pressure releasing is carried out, the pressure regulating and pressure releasing executing device is used for controlling the outward movement of the second valve rod so that high-pressure paint in the pump cavity flows back through the backflow hole and the backflow connector to realize the pressure releasing function.
Further, the touch valve comprises a touch valve seat, the touch rod is arranged in the touch valve seat, an electromagnet and a movable iron core are further arranged in the touch valve seat, the electromagnet is controlled by on-off electricity to realize movement of the movable iron core, the movable iron core is fixedly connected with the touch rod, and a spring c is sleeved outside the touch rod to play a reset role.
Further, a return pipe is connected to the return joint, and paint in the pump cavity flows back through the return hole and the return pipe in sequence during pressure relief.
Further, the pressure regulating and pressure releasing executing device comprises an executing motor arranged on the upper portion of the pump body through a connecting seat and a switch mounting frame rotatably arranged on one side of the connecting seat through a pin shaft, a tension spring is arranged between the switch mounting frame and the connecting seat, a micro switch is arranged on the switch mounting frame and used for controlling the start and stop of the power motor and corresponding to the position of a first valve rod, specifically, the power motor rotates to enable the pressure of the pump cavity to rise when the first valve rod does not touch the micro switch, and the power motor stops rotating to enable the pressure of the pump cavity to be kept at a set value when the first valve rod touches the micro switch.
Further, the pressure regulating and pressure release executive device further comprises an executive component arranged at the output end of the executive motor, the executive component is rotatably arranged in the connecting seat, the executive component comprises an upper disc, a middle cam and a lower cam which are integrally formed, the middle cam is connected to the second valve rod through a first transmission rod and lever transmission to realize the pressure release function through the movement of the second valve rod, the lower cam is propped against the switch mounting frame through the second transmission rod to realize the distance adjustment of the micro switch and the first valve rod, the pressure regulating function is realized, and the connecting seat is provided with a through hole for the first transmission rod and the second transmission rod to pass through and play a guiding role.
Further, the pressure regulating and pressure releasing executing device further comprises an optical coupler element, a plurality of light holes are formed in the surface of the upper disc, and the optical coupler element is arranged on the connecting seat and used for identifying the positions of the light holes, so that the executing motor can be stopped at a desired set position.
Further, the middle cam is divided into a first arc part, a first gradual change part and a first limit part, the lower cam is divided into a second arc part, a second gradual change part and a second limit part, when the first transmission rod is in contact with the first gradual change part, the second transmission rod is positioned at the second arc part, when the second transmission rod is in contact with the second gradual change part, the first transmission rod is positioned at the first arc part, so that the pressure regulating and pressure releasing functions of the spraying machine are not affected each other.
Compared with the prior art, the invention has the beneficial effects that: the trigger valve is controlled by an electric control program, single trigger operation is carried out when the spraying machine is used, the control of the pressure regulating valve and the pressure releasing valve is completed by the executing motor, the pressure releasing or the selection of the pressure gear is carried out through the knob switch on the spraying machine, the executing motor is stopped at the set position, the pressure in the pump cavity can reach the desired set value, for a user, the functions of pressure releasing and pressure regulating can be carried out only through the knob switch on one spraying machine, the operation and the use of the spraying machine are very convenient, and the user is convenient.
Drawings
FIG. 1 is a perspective view of a portable electrically controlled pressure regulating and relieving structure for a spray coater according to the present invention;
FIG. 2 is a cross-sectional view of a portable electronically controlled pressure regulating and relieving structure of the present invention;
FIG. 3 is a schematic cross-sectional view of a trigger valve;
FIG. 4 is a schematic cross-sectional view of a pressure regulating valve and a pressure relief valve;
FIG. 5 is a schematic diagram of the positions of the pressure regulating valve and the pressure relief valve on two sides of the pump body;
FIG. 6 is a schematic diagram of a pressure regulating and relieving actuator;
FIG. 7 is a schematic view of the hidden connector of FIG. 6;
FIG. 8 is an exploded view of the pressure regulating and relieving actuator of FIG. 6;
FIG. 9 is a schematic diagram of an actuator involved;
Fig. 10 is a schematic view of the structure of the intermediate cam of the actuator concerned.
In the figure:
1. A power motor; 2. a plunger pump; 21. a pump body; 211. a return joint; 22. a plunger; 23. a pump chamber; 3. a feed pipe; 4. a first one-way valve; 4a, steel balls; 5. a discharge pipe; 6. a second one-way valve; 7. triggering a valve; 71. touching the valve seat of the valve; 72. an electromagnet; 73. a movable iron core; 74. a spring c; 75. a touch lever; 8. a pressure regulating valve; 81. a pressure regulating valve seat; 82. a first valve stem; 83. a spring a; 9. a pressure release valve; 91. a pressure relief valve seat; 911. a reflow hole; 92. a spring b; 93. a second valve stem; 10. a return pipe;
30. The pressure regulating and pressure releasing executing device; 31. a connecting seat; 32. an actuator; 321. an upper disc; 3211. a light hole; 322. an intermediate cam; 3221. a first arc portion; 3222. a first gradation portion; 3223. a first limit part; 323. a lower cam; 3231. a second arc portion; 3232. a second gradation portion; 3233. a second limit part; 33. executing a motor; 34. a pin shaft; 35. a switch mounting rack; 36. a micro-switch; 37. a tension spring; 38. a first transmission rod; 39. a lever; 40. a second transmission rod; 41. an optocoupler element.
Detailed Description
As shown in fig. 1 and 2, a portable electrically controlled pressure regulating and relieving structure for a spray coater according to an embodiment of the present invention includes a plunger pump 2, where the plunger pump 2 is used for sucking and pressing paint, and the plunger pump 2 includes a pump body 21 and a plunger 22 that reciprocates in a pump cavity 23 of the pump body 21; one side of the plunger pump 2 is provided with a power motor 1, and the power motor 1 is used for providing driving force for driving the plunger 22 to reciprocate; the feeding pipe 3 and the discharging pipe 5 are both connected to the pump body 21 and communicated with the pump cavity 23, and the feeding pipe 3 and the discharging pipe 5 are respectively provided with a first check valve 4 and a second check valve 6.
As shown in fig. 1 and 3, the trigger valve 7 is arranged on the pump body 21 and corresponds to the first one-way valve 4 in position, a movable trigger lever 75 is arranged in the trigger valve 7, and the trigger lever 75 can axially move to trigger the steel ball 4a of the first one-way valve 4; more specifically, the trigger valve 7 includes a trigger valve seat 71, a trigger lever 75 is disposed in the trigger valve seat 71, an electromagnet 72 and a movable iron core 73 are further disposed in the trigger valve seat 71, the electromagnet 72 is controlled by on-off electricity to move the movable iron core 73, the movable iron core 73 is fixedly connected with the trigger lever 75, and a spring c74 is sleeved outside the trigger lever 75 to play a reset role.
As shown in fig. 4 and 5, the pressure regulating valve 8 is provided on the pump body 21, the pressure regulating valve 8 includes a pressure regulating valve seat 81, a first valve rod 82 disposed in the pressure regulating valve seat 81, and a spring a83 supporting the first valve rod 82, an inner end of the first valve rod 82 extends into the pump chamber 23, and an outer end of the first valve rod 82 extends out of the pressure regulating valve seat 81; the pressure release valve 9 is arranged on the pump body 21, the pressure release valve 9 comprises a pressure release valve seat 91, a second valve rod 93 arranged in the pressure release valve seat 91 and a spring b92 for supporting the second valve rod, the inner end of the second valve rod 93 stretches into the pump cavity 23, the outer end of the second valve rod 93 stretches out of the pressure release valve seat 91, a backflow hole 911 is further processed on the pressure release valve seat 91, a backflow joint 211 is further formed on the pump body 21, and the backflow joint 211 corresponds to the backflow hole 911 in position; the return pipe 10 is connected to the return joint 211, and paint in the pump chamber 23 flows back through the return hole 911 and the return pipe 10 in order during pressure relief.
As shown in fig. 6, the pressure adjusting and pressure releasing executing device 30 is configured to perform pressure adjusting and pressure releasing operations of the spraying machine, when the pressure is adjusted, the pressure adjusting and pressure releasing executing device 30 monitors the position of the first valve rod 82 and controls the start and stop of the power motor 1 so as to enable the pressure of the pump cavity 23 to reach a set value, and when the pressure is released, the pressure adjusting and pressure releasing executing device 30 controls the second valve rod 93 to move outwards so as to enable high-pressure paint in the pump cavity 23 to form backflow through the backflow hole 911 and the backflow joint 211, so as to achieve the pressure releasing function.
More specifically, as shown in fig. 7 and 8, the pressure regulating and releasing executing device 30 includes an executing motor 33 mounted on the upper portion of the pump body 21 through a connecting seat 31, a switch mounting frame 35 rotatably mounted on one side of the connecting seat 31 through a pin 34, a tension spring 37 disposed between the switch mounting frame 35 and the connecting seat 31, a micro switch 36 mounted on the switch mounting frame 35, wherein the micro switch 36 is used for controlling the start and stop of the power motor 1 and corresponds to the position of the first valve rod 82, specifically, when the first valve rod 82 does not touch the micro switch 36, the power motor 1 rotates to raise the pressure of the pump cavity 23, and when the first valve rod 82 touches the micro switch 36, the power motor 1 stops rotating to maintain the pressure of the pump cavity 23 at a set value.
As shown in fig. 7 and 8, the pressure regulating and pressure releasing executing device 30 further includes an executing member 32 installed at an output end of the executing motor 33, the executing member 32 is rotatably installed in the connecting seat 31, the executing member 32 includes an integrally formed upper disc 321, an intermediate cam 322 and a lower cam 323, the intermediate cam 322 is connected to the second valve rod 93 through a first transmission rod 38 and a lever 39 in a transmission manner so as to realize movement of the second valve rod 93 to realize a pressure releasing function, the lower cam 323 is propped against the switch mounting frame 35 through the second transmission rod 40 so as to realize distance regulation of the micro switch 36 and the first valve rod 82, so as to realize a pressure regulating function, and a through hole is formed in the connecting seat 31 for the first transmission rod 38 and the second transmission rod 40 to pass through and simultaneously play a guiding role; the pressure regulating and pressure releasing executing device 30 further comprises an optocoupler 41, wherein a plurality of light holes 3211 (see fig. 9) are formed in the surface of the upper disc 321, and the optocoupler 41 is mounted on the connecting seat 31 and recognizes the positions of the light holes 3211, so that the executing motor 33 can be stopped at a desired set position.
As shown in fig. 9 and 10, the intermediate cam 322 is divided into three parts, namely a first arc part 3221, a first gradual change part 3222 and a first limit part 3223, the lower cam 323 is divided into three parts, namely a second arc part 3231, a second gradual change part 3232 and a second limit part 3233, when the first transmission rod 38 is in contact with the first gradual change part 3222, the second transmission rod 40 is positioned at the second arc part 3231, and when the second transmission rod 40 is in contact with the second gradual change part 3232, the first transmission rod 38 is positioned at the first arc part 3221, so that the pressure regulating and releasing functions of the spraying machine are not affected by each other.
The trigger valve is controlled by an electric control program, single trigger operation is carried out when the spraying machine is used, the control of the pressure regulating valve and the pressure releasing valve is completed by the executing motor, the pressure releasing or the selection of the pressure gear is carried out through the knob switch on the spraying machine, the executing motor is stopped at the set position, the pressure in the pump cavity can reach the desired set value, for a user, the functions of pressure releasing and pressure regulating can be carried out only through the knob switch on one spraying machine, the operation and the use of the spraying machine are very convenient, and the user is convenient.
When in specific use, the invention is described with reference to the drawings for convenient understanding;
when the spraying machine is started, an internal electric control program controls the touch valve to act once, referring to fig. 3, the electromagnet 72 is electrified to enable the movable iron core 73 to drive the touch rod 75 to move rightwards to enable the steel ball 4a to move upwards, and after the electromagnet 72 is powered off, the steel ball 4a is reset under the action of elastic force, so that the problem that the steel ball 4a of the first one-way valve 4 is easy to adhere to influence the material sucking process of the plunger pump 2 under the long-term non-use condition of the spraying machine is solved.
Referring to fig. 9, at this time, the light hole 3211 at the middle position is taken as a reference point, when the reference point is identified by the optocoupler 41, the second transmission rod 40 is located at the transition position between the second arc portion 3231 and the second gradual change portion 3232, the light hole 3211 at the right side of the reference point is sequentially in a pressure gear, such as a first gear, a second gear, a third gear, a fourth gear, a fifth gear and a sixth gear, and the high gear correspondingly enables the pump cavity 23 to have higher working pressure and pressure maintaining pressure, that is, when a certain light hole 3211 at the right side of the reference point is identified by the optocoupler 41, the selection of the pressure gear is correspondingly realized; the light hole 3211 on the left side of the reference point is a pressure relief gear, when the pressure relief gear is identified by the optocoupler 41, the first transmission rod 38 is located on the first gradual change portion 3222 and contacts the first limiting portion 3223, at this time, the first transmission rod 38 pulls out the second valve rod 93 through the lever 39, and paint in the pump cavity 23 flows back through the backflow hole 911 and the backflow pipe 10 to realize pressure relief.
The knob switch of the spraying machine is used for carrying out pressure regulation and pressure relief, the knob switch controls the stop position of the execution motor 33, when pressure relief is needed, the control system receives a pressure relief signal to enable a light hole 3211 on the left side of a reference point to be identified by the optocoupler element 41, at the moment, the first transmission rod 38 pulls out the second valve rod 93 through the lever 39, paint in the pump cavity 23 forms backflow through the backflow hole 911 and the backflow pipe 10, and pressure relief is achieved;
when pressure regulation is needed, two conditions are divided:
1. when spraying operation is performed, the knob switch changes the pressure gear, the control system receives the signal of the knob switch to enable the execution motor 33 to rotate to enable the second transmission rod 40 to change in position on the second gradual change portion 3232, at this time, the second transmission rod 40 enables the switch mounting frame 35 to move, the distance between the micro switch 36 and the first valve rod 82 changes accordingly, and pressure change in the pump cavity 23 is achieved.
2. When the spraying operation is not performed, the spraying machine is in a pressure maintaining state, at this time, if the knob switch performs an upshift operation (for example, a first gear upshift and a second gear upshift), the control system receives an upshift signal of the knob switch, at this time, the execution motor 33 rotates to enable the second transmission rod 40 to be located on the second gradual change portion 3232 and to approach the second limit portion 3223 along the second gradual change portion 3232, at this time, the second transmission rod 40 enables the switch mounting frame 35 to move outwards, the distance between the micro switch 36 and the first valve rod 82 is increased, and the pump cavity 23 is required to provide a larger pressure value to enable the first valve rod 82 to contact the micro switch 36 outwards so as to stop the power motor 1, and then the pressure maintaining pressure of the second gear is provided in the pump cavity 23;
If the knob switch performs a downshift operation (e.g., a second gear downshift), at this time, because the sprayer is in a pressure-maintaining state, the pump chamber 23 still has a high-gear pressure-maintaining pressure, and no direct downshift is possible, and when the trigger of the spray gun head is pulled to perform the spraying operation, the tension spring 37 causes the switch mounting frame 35 to move inward, the distance between the microswitch 36 and the first valve rod 82 decreases, and the pressure in the pump chamber 23 decreases to a low-gear pressure.
In summary, when the spraying machine works, the lifting gear is directly completed, when the spraying machine is in a pressure-maintaining state, the lifting gear can be directly completed, and when the spraying machine is in a down-shifting state, the spraying machine needs to be started again to realize the down-shifting.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The utility model provides a portable automatically controlled pressure regulating and pressure release structure on flush coater which characterized in that: comprising
The plunger pump (2), the said plunger pump (2) is used for sucking and pressing the paint, the said plunger pump (2) includes the pump body (21) and makes the reciprocating plunger (22) in the pump cavity (23) of the said pump body (21);
A power motor (1), the power motor (1) being configured to provide a driving force for driving the plunger (22) to reciprocate;
The feeding pipe (3) and the discharging pipe (5), the feeding pipe (3) and the discharging pipe (5) are both connected to the pump body (21) and communicated with the pump cavity (23), and the feeding pipe (3) and the discharging pipe (5) are respectively provided with a first one-way valve (4) and a second one-way valve (6);
The trigger valve (7), the said trigger valve (7) is set up on the said pump body (21) and corresponds to position of the said first unidirectional valve (4), there is a movable trigger lever (75) in the said trigger valve (7), the said trigger lever (75) can move in order to touch the steel ball (4 a) of the said first unidirectional valve (4) through the axial;
the pressure regulating valve (8) is arranged on the pump body (21), the pressure regulating valve (8) comprises a pressure regulating valve seat (81), a first valve rod (82) arranged in the pressure regulating valve seat (81) and a spring a (83) supporting the first valve rod (82), the inner end of the first valve rod (82) stretches into the pump cavity (23), and the outer end of the first valve rod (82) stretches out of the pressure regulating valve seat (81); the touch valve is controlled by an electric control program, and when the spraying machine is started, the internal electric control program controls the touch valve to act once;
The pressure relief valve (9), the pressure relief valve (9) is arranged on the pump body (21), the pressure relief valve (9) comprises a pressure relief valve seat (91), a second valve rod (93) arranged in the pressure relief valve seat (91) and a spring b (92) supporting the second valve rod, the inner end of the second valve rod (93) stretches into the pump cavity (23), the outer end of the second valve rod (93) stretches out of the pressure relief valve seat (91), a backflow hole (911) is further processed on the pressure relief valve seat (91), a backflow joint (211) is further formed on the pump body (21), and the backflow joint (211) corresponds to the position of the backflow hole (911);
The pressure regulating and pressure releasing executing device (30), wherein the pressure regulating and pressure releasing executing device (30) is used for executing pressure regulating and pressure releasing operations of the spraying machine, when the pressure regulating and pressure releasing executing device (30) is used for monitoring the position of the first valve rod (82) and controlling the start and stop of the power motor (1) so as to enable the pressure of the pump cavity (23) to reach a set value, and when the pressure releasing is carried out, the pressure regulating and pressure releasing executing device (30) is used for enabling high-pressure paint of the pump cavity (23) to form backflow through the backflow hole (911) and the backflow connector (211) by controlling the outward movement of the second valve rod (93), so that the pressure releasing function is realized;
The pressure regulating and pressure releasing executing device (30) comprises an executing motor (33) arranged on the upper portion of the pump body (21) through a connecting seat (31), and a switch mounting frame (35) rotatably arranged on one side of the connecting seat (31) through a pin shaft (34), a tension spring (37) is arranged between the switch mounting frame (35) and the connecting seat (31), a micro switch (36) is arranged on the switch mounting frame (35), the micro switch (36) is used for controlling the start and stop of the power motor (1) and corresponds to the position of the first valve rod (82), specifically, when the first valve rod (82) does not touch the micro switch (36), the power motor (1) rotates to enable the pressure of the pump cavity (23) to rise, and when the first valve rod (82) touches the micro switch (36), the power motor (1) stops rotating to enable the pressure of the pump cavity (23) to be kept at a set value;
The pressure regulating and pressure releasing executing device (30) further comprises an executing piece (32) arranged at the output end of the executing motor (33), the executing piece (32) is rotatably arranged in the connecting seat (31), the executing piece (32) comprises an upper disc (321), an intermediate cam (322) and a lower cam (323) which are integrally formed, the intermediate cam (322) is connected to the second valve rod (93) through a first transmission rod (38) and a lever (39) in a transmission manner so as to realize the movement of the second valve rod (93) and realize the pressure releasing function, the lower cam (323) is propped against the switch mounting frame (35) through a second transmission rod (40) so as to realize the distance regulation of the micro switch (36) and the first valve rod (82), the pressure regulating function is realized, and a through hole is formed in the connecting seat (31) so that the first transmission rod (38) and the second transmission rod (40) penetrate and simultaneously play a role in guiding;
The pressure regulating and pressure releasing executing device (30) further comprises an optical coupling element (41), a plurality of light holes (3211) are formed in the surface of the upper disc (321), the optical coupling element (41) is arranged on the connecting seat (31) and recognizes the positions of the light holes (3211), and the executing motor (33) can be stopped at a desired set position.
2. The portable electrically controlled pressure regulating and relief structure for a spray coater of claim 1 wherein: the trigger valve (7) comprises a trigger valve seat (71), the trigger rod (75) is arranged in the trigger valve seat (71), an electromagnet (72) and a movable iron core (73) are further arranged in the trigger valve seat (71), the electromagnet (72) is controlled by on-off electricity to realize the movement of the movable iron core (73), the movable iron core (73) is fixedly connected with the trigger rod (75), and a spring c (74) is sleeved outside the trigger rod (75) to play a reset role.
3. The portable electrically controlled pressure regulating and relief structure for a spray coater of claim 1 wherein: and a return pipe (10) is connected to the return joint (211), and paint in the pump cavity (23) flows back through the return hole (911) and the return pipe (10) in sequence during pressure relief.
4. The portable electrically controlled pressure regulating and relief structure for a spray coater of claim 1 wherein: the middle cam (322) is divided into a first arc part (3221), a first gradual change part (3222) and a first limit part (3223), the lower cam (323) is divided into a second arc part (3231), a second gradual change part (3232) and a second limit part (3233), when the first transmission rod (38) is in contact with the first gradual change part (3222), the second transmission rod (40) is positioned at the second arc part (3231), and when the second transmission rod (40) is in contact with the second gradual change part (3232), the first transmission rod (38) is positioned at the first arc part (3221), so that the pressure regulating and pressure releasing functions of the spraying machine are not affected by each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311397142.1A CN117404270B (en) | 2023-10-26 | 2023-10-26 | Portable electronic control pressure regulating and pressure releasing structure on spraying machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311397142.1A CN117404270B (en) | 2023-10-26 | 2023-10-26 | Portable electronic control pressure regulating and pressure releasing structure on spraying machine |
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| CN117404270A CN117404270A (en) | 2024-01-16 |
| CN117404270B true CN117404270B (en) | 2024-05-14 |
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| CN202311397142.1A Active CN117404270B (en) | 2023-10-26 | 2023-10-26 | Portable electronic control pressure regulating and pressure releasing structure on spraying machine |
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| CN101487479B (en) * | 2009-02-16 | 2011-10-05 | 常州格力博工具有限公司 | Pump head component and cleaning machine with the same |
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| CN117404270A (en) | 2024-01-16 |
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