CN111346753A - Liquid supply pressure stabilizing system and liquid supply mode thereof - Google Patents

Abstract

The invention discloses a liquid supply pressure stabilizing system and a liquid supply mode thereof, and relates to the technical field of paint spraying. The reciprocating plate is arranged to enable the first pump body and the second pump body to always have a state of being in constant compression pump oil, meanwhile, the other pump body is in a state of pumping fluid, and the reciprocating motion of the reciprocating plate guarantees the continuity of fluid output, so that the stability of the fluid output is guaranteed, the output breakpoint is avoided, and the smoothness of a paint surface is guaranteed in paint spraying.

Description

Liquid supply voltage stabilization system and its liquid supply method

technical field

The invention relates to the technical field of paint spraying, in particular to a liquid supply voltage stabilization system and a liquid supply method.

Background technique

At present, most of the painting systems basically have three types: piston pumps, gear pumps, and diaphragm pumps. The principle of the plunger pump and the diaphragm pump is basically the same. The plunger retracts, and the paint enters the liquid cylinder; the plunger is compressed, the paint is discharged from the valve port, and the robot spray gun mouth has the paint sprayed out. In this method, friction is generated due to the expansion and contraction of the plunger, the corresponding paint supply efficiency is low, and each expansion cycle will have time loss, resulting in breakpoints during painting. Followed by the gear pump, the pump cylinder meshes with the rotating gear to form a change in volume. When the volume becomes larger, a vacuum internal environment is formed, and the paint is sucked from the barrel; when the volume becomes smaller, the paint is squeezed into the pipeline and ejected from the nozzle of the spray gun. This method has high requirements for the density and characteristics of the paint, and once the oil trapping phenomenon occurs, it is not easy to repair. And there will inevitably be gaps when the meshing gears are running, resulting in paint leakage.

SUMMARY OF THE INVENTION

The technical scheme of the present invention provides a liquid supply voltage stabilization system and a liquid supply method thereof, which can ensure the stable supply of fluid and avoid the phenomenon of supply interruption. The specific technical solutions are as follows:

In a first aspect, the present invention provides a liquid supply voltage stabilization system, comprising a liquid storage tank, a pump liquid part and a diversion part, the diversion part is connected with the liquid storage tank and the pump liquid part, and the diversion part is configured to receive the fluid from the liquid storage tank and circulate it. The liquid feeding part is configured to obtain the fluid from the shunt part and pump the fluid back to the shunt part; , The second pump body, the reciprocating plate, the mounting plate and the driving device, the liquid cylinders of the first pump body and the second pump body are fixedly arranged on the reciprocating plate, and the mounting plates are distributed on both sides of the reciprocating plate and are parallel to the reciprocating plate. The plungers of the pump body and the second pump body are fixed on the mounting plate corresponding to the positions of the corresponding liquid cylinders, and the driving device is set in the connection mode of the servo motor and the screw, the reciprocating plate is connected with the screw through the thread, the servo motor drives the screw to rotate, and the screw The reciprocating plate is driven to reciprocate by rotation.

Through the arrangement of the reciprocating plate, one of the first pump body and the second pump body is always in a constant state of compressing pump oil, while the other pump body is in a state of extracting fluid, and the reciprocating motion of the reciprocating plate ensures the continuity of fluid output. , so as to ensure the stability of the fluid output, avoid output breakpoints, and ensure the smoothness of the paint surface during paint spraying.

In particular, the diversion part includes a tank body, a first liquid port, a second liquid port, a third liquid port and a liquid outlet, the first liquid port is connected with the first pump body, the second liquid port is connected with the liquid storage tank, and the first liquid port is connected with the liquid storage tank. The three liquid ports are connected to the second pump body, the first liquid port and the liquid outlet form a first liquid outlet flow channel, the third liquid port and the liquid outlet port form a second liquid outlet flow channel, and the first liquid port and the second liquid outlet The port forms the first liquid supply channel, the third liquid port and the second liquid port form the second liquid supply channel, and the box is provided with a first block, a second block, a third block, and a first movable block block, the second movable block, the first telescopic device and the second telescopic device, the interval between the first block and the second block forms the first liquid port, the second liquid port and the third liquid port, the first movable block Installed on the movable end of the first telescopic device, the fixed end of the first telescopic device is fixed on the box body, the second movable block is installed on the movable end of the second telescopic device, and the fixed end of the second telescopic device is fixed on the box body. On the top, the first movable stop is arranged between the first stop, the second stop and the third stop, the second movable stop is arranged between the third stop and the box, and the first movable stop is connected to the third stop. The two movable blocks are respectively arranged on both sides of the third block.

Through the specific setting of the shunt part, the shunt part can adapt to the switching of multiple flow channels, meet the needs of the constantly changing liquid discharge and suction of the pump liquid part, and ensure the stable operation of the liquid supply voltage stabilization system.

Specifically, a sealing ring is provided on the upper ring of the first movable block and the second movable block.

Specifically, a position sensor is provided between the reciprocating plate and the mounting plate.

On the other hand, the present invention also provides a liquid supply method, and the liquid supply method comprises the following steps:

Step 1: The reciprocating plate translates upwards under the driving of the driving device. The reciprocating plate squeezes the first pump body and stretches the second pump body, so as to promote the second pump body to draw fluid and at the same time promote the first pump body to output fluid. Step 2: The first telescopic device is extended, and the second telescopic device is retracted, blocking the first liquid supply channel and the second liquid outlet channel, and opening the second liquid supply channel and the first liquid outlet channel. Step 3: The fluid pumped by the first pump body flows into the first liquid port and flows out of the box body through the first liquid outlet channel. Step 4: The oil storage tank outputs the fluid, and the fluid flows through the second liquid port through the second liquid supply channel and flows out from the third liquid port, and is sucked into the second pump body. Step 5: The reciprocating plate translates downward under the drive of the driving device, and the reciprocating plate squeezes the second pump body and stretches the first pump body, so as to promote the first pump body to draw fluid and at the same time promote the second pump body to output fluid. Step 6: The second telescopic device is extended, the first telescopic device is retracted, the second liquid supply channel and the first liquid outlet channel are blocked, and the first liquid supply channel and the second liquid outlet channel are opened. Step 7: The fluid pumped by the second pump body flows into the third liquid port and flows out of the box body through the second liquid outlet channel. Step 8: The oil storage barrel outputs the fluid, and the fluid flows through the second liquid port through the first liquid supply channel and flows out from the first liquid port, and is sucked into the first pump body. Step 9: Repeat the above steps from step 1.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description serve to explain the principles of the invention, wherein:

Fig. 1 is the three-dimensional structure schematic diagram of liquid supply voltage stabilization system;

Fig. 2 is the three-dimensional structure schematic diagram of pump liquid part;

Fig. 3 is the position diagram of the second step in the box;

Figure 4 is a position diagram of the box at step six.

Reference signs: 1 liquid storage tank, 2 pump liquid part, 3 branch part, 4 first pump body, 5 second pump body, 6 reciprocating plate, 7 servo motor, 8 screw, 9 first liquid port, 10 second Liquid port, 11 third liquid port, 12 liquid outlet, 13 first block, 14 second block, 15 third block, 14 first movable block, 15 second movable block, 16 first telescopic block Power unit, 17 second telescopic power unit, 18 box, 19 seal ring, 20 position sensor, 21 mounting plate

Detailed ways

The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are only examples and are not intended to limit the invention. Furthermore, the present disclosure may repeat reference numerals and/or reference letters in different instances for the purpose of simplicity and clarity and not in itself indicative of a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

At present, most of the painting systems basically have three types: piston pumps, gear pumps, and diaphragm pumps. The principle of the plunger pump and the diaphragm pump is basically the same. The plunger retracts, and the paint enters the liquid cylinder; the plunger is compressed, the paint is discharged from the valve port, and the robot spray gun mouth has the paint sprayed out. In this method, friction is generated due to the expansion and contraction of the plunger, the corresponding paint supply efficiency is low, and each expansion cycle will have time loss, resulting in breakpoints during painting. Followed by the gear pump, the pump cylinder meshes with the rotating gear to form a change in volume. When the volume becomes larger, a vacuum internal environment is formed, and the paint is sucked from the barrel; when the volume becomes smaller, the paint is squeezed into the pipeline and ejected from the nozzle of the spray gun. This method has high requirements for the density and characteristics of the paint, and once the oil trapping phenomenon occurs, it is not easy to repair. And there will inevitably be gaps when the meshing gears are running, resulting in paint leakage.

In order to ensure the stable supply of fluid and avoid the phenomenon of supply break, the technical solution of the present invention provides a liquid supply voltage stabilization system and a liquid supply method. The technical solution is as follows:

The present invention will be described in further detail below according to FIG. 1 to FIG. 4 .

As shown in Figure 1, Figure 2, Figure 3 and Figure 4, in the first aspect, the present invention provides a liquid supply voltage stabilization system, including a liquid storage tank 1, a pump liquid part 2 and a diverter part 3, and the diverter part 3 is connected to the liquid storage Tank 1 and pumping part 2, the diverting part 3 is configured to receive the fluid from the tank 1 and circulate to the pumping part 2, the pumping part 2 is configured to take the fluid from the diverting part 3, and pump the fluid back to the diverting part 3. The shunt part 3 leads the fluid pumped back by the pump liquid part 2 to the liquid supply voltage stabilization system. The pump liquid part 2 includes a first pump body 4, a second pump body 5, a reciprocating plate 6, a mounting plate 21 and a driving device. The liquid cylinders of the first pump body 4 and the second pump body 5 are fixedly arranged on the reciprocating plate 6 , the mounting plates 21 are distributed on both sides of the reciprocating plate 6 and are parallel to the reciprocating plate 6 . The position of the plunger corresponding to the corresponding liquid cylinder is fixed on the mounting plate 21, the driving device is set as the connection mode of the servo motor 7 and the screw 8, the reciprocating plate 6 is connected with the screw 8 through the thread, the servo motor 7 drives the screw 8 to rotate, and the screw 8 The reciprocating plate 6 is driven to reciprocate by rotation.

Through the arrangement of the reciprocating plate 6, one of the first pump body 4 and the second pump body 5 is always in a constant state of compressing the pump oil, while the other pump body is in a state of extracting fluid, and the reciprocating motion of the reciprocating plate 6 ensures that the fluid The continuity of the output ensures the stability of the fluid output, avoids output breakpoints, and ensures the smoothness of the paint surface during paint spraying.

In particular, the diverting part 3 includes a box body 18 , a first liquid port 9 , a second liquid port 10 , a third liquid port 11 and a liquid outlet 12 , the first liquid port 9 is connected to the first pump body 4 , and the second liquid port 9 is connected to the first pump body 4 . The port 10 is connected to the liquid storage tank 1, the third liquid port 11 is connected to the second pump body 5, the first liquid port 9 and the liquid outlet 12 form a first liquid outlet channel, and the third liquid port 11 and the liquid outlet 12 The second liquid outlet channel is formed, the first liquid port 9 and the second liquid port 10 form the first liquid supply channel, and the third liquid port 11 and the second liquid port 10 form the second liquid supply channel. There are first block 13, second block 14, third block 15, first movable block 14, second movable block 15, first telescopic device 16 and second telescopic device 17, first block The interval between 13 and the second block 14 forms the first liquid port 9, the second liquid port 10 and the third liquid port 11. The first movable block 14 is installed on the movable end of the first telescopic device 16, and the first telescopic device 16 The fixed end of the second telescopic device 17 is fixed on the box body 18, the second movable block 15 is installed on the movable end of the second telescopic device 17, the fixed end of the second telescopic device 17 is fixed on the box body 18, and the first movable block 14 is provided Between the first stopper 13 , the second stopper 14 and the third stopper 15 , the second movable stopper 15 is arranged between the third stopper 15 and the box 18 , and the first movable stopper 14 is connected to the second stopper 15 . The movable blocks 15 are respectively arranged on both sides of the third block 15 .

Through the specific setting of the shunt part 3, the shunt part 3 can adapt to the switching of multiple flow channels, meet the needs of the pump liquid part 2 for constantly changing liquid discharge and suction, and ensure the stable operation of the liquid supply voltage stabilization system.

In actual operation, the first telescopic device 16 and the second telescopic device 17 are cylinders.

Specifically, the first movable block 14 and the second movable block 15 are provided with a sealing ring 19 on the upper ring.

Specifically, a position sensor 20 is provided between the reciprocating plate 6 and the mounting plate 21. In production practice, the position sensor 20 can be a cylinder with a proximity opening or a proximity switch or an opposite-shooting switch.

On the other hand, the present invention also provides a liquid supply method, and the liquid supply method comprises the following steps:

Step 1: The reciprocating plate 6 translates upwards under the driving of the driving device, and the reciprocating plate 6 squeezes the first pump body 4 and stretches the second pump body 5, so as to promote the second pump body 5 to extract fluid and at the same time promote the first pump body 4 output fluid. Step 2: The first telescopic device 16 is extended, and the second telescopic device 17 is retracted, blocking the first liquid supply channel and the second liquid outlet channel, and opening the second liquid supply channel and the first liquid outlet channel. Step 3: The fluid pumped by the first pump body 4 flows into the first liquid port 9 and flows out of the box body 18 through the first liquid outlet channel. Step 4: The oil storage tank outputs the fluid, and the fluid flows through the second liquid port 10 through the second liquid supply channel and flows out from the third liquid port 11 , and is sucked into the second pump body 5 . Step 5: The reciprocating plate 6 translates downward under the driving of the driving device, and the reciprocating plate 6 squeezes the second pump body 5 and stretches the first pump body 4, so as to promote the first pump body 4 to extract fluid and at the same time promote the second pump body 5 Output fluid. Step 6: The second telescopic device 17 is extended, and the first telescopic device 16 is retracted, blocking the second liquid supply channel and the first liquid outlet channel, and opening the first liquid supply channel and the second liquid outlet channel. Step 7: The fluid pumped by the second pump body 5 flows into the third liquid port 11 and flows out of the box body 18 through the second liquid outlet channel. Step 8: The oil storage tank outputs the fluid. The fluid flows through the second liquid port 10 through the first liquid supply channel and flows out from the first liquid port 9 , and is sucked into the first pump body 4 . Step 9: Repeat the above steps from step 1.

Other embodiments of the invention will readily suggest themselves to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses or adaptations of the invention which follow the general principles of the invention and which include common knowledge or techniques commonly used in the field of the invention. The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the invention being indicated by the claims.

It should be understood that the present invention is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims (5)

1. The liquid supply and pressure stabilization system is characterized by comprising a liquid storage barrel, a liquid pumping part and a flow dividing part, wherein the flow dividing part is connected with the liquid storage barrel and the liquid pumping part, the flow dividing part is arranged for receiving fluid from the liquid storage barrel and circulating the fluid to the liquid pumping part, the liquid pumping part is arranged for obtaining the fluid from the flow dividing part and pumping the fluid back to the flow dividing part, the flow dividing part leads the fluid pumped back by the liquid pumping part out of the liquid supply and pressure stabilization system, the liquid pumping part comprises a first pump body, a second pump body, a reciprocating plate, a mounting plate and a driving device, liquid cylinders of the first pump body and the second pump body are fixedly arranged on the reciprocating plate, the mounting plate is distributed on two sides of the reciprocating plate and is parallel to the reciprocating plate, plungers of the first pump body and the second pump body are fixedly arranged on the mounting plate corresponding to the positions of the liquid cylinders, and the driving device is arranged in a mode of connecting a servo motor and a screw rod, the reciprocating plate is connected with the screw rod through threads, the servo motor drives the screw rod to rotate, and the screw rod drives the reciprocating plate to reciprocate through rotation.

2. The liquid supply pressure stabilizing system according to claim 1, wherein the flow dividing portion comprises a box body, a first liquid port, a second liquid port, a third liquid port and a liquid outlet, the first liquid port is connected with the first pump body, the second liquid port is connected with the liquid storage barrel, the third liquid port is connected with the second pump body, the first liquid port and the liquid outlet form a first liquid outlet channel, the third liquid port and the liquid outlet form a second liquid outlet channel, the first liquid port and the second liquid port form a first liquid supply channel, the third liquid port and the second liquid port form a second liquid supply channel, a first stop block, a second stop block, a third stop block, a first movable stop block, a second movable stop block, a first telescopic device and a second telescopic device are arranged in the box body, and an interval between the first stop block and the second stop block forms the first liquid port, a second liquid port, The second liquid mouth with the third liquid mouth, first movable stop is installed first telescoping device's expansion end, first telescoping device's stiff end is fixed on the box, second movable stop is installed second telescoping device's expansion end, second telescoping device's stiff end with fix on the box, first movable stop sets up first dog second dog with between the third dog, second movable stop sets up third dog with between the box, first movable stop with second movable stop sets up respectively the both sides of third dog.

3. A liquid supply pressure stabilizing system as claimed in claim 2, wherein the first movable stop and the second movable stop have sealing rings disposed thereon.

4. A liquid supply pressure stabilization system according to claim 2, wherein a position sensor is provided between the shuttle plate and the mounting plate.

5. The liquid supply method is applied to the liquid supply pressure stabilizing system as claimed in any one of claims 1 to 4, and is characterized by comprising the following steps of:

the method comprises the following steps: the reciprocating plate is driven by the driving device to move upwards in a translation mode, the reciprocating plate extrudes the first pump body and stretches the second pump body, and the second pump body is promoted to pump fluid and the first pump body is promoted to output fluid.

Step two: the first telescopic device extends out, the second telescopic device retracts to block the first liquid supply channel and the second liquid outlet channel, and the second liquid supply channel and the first liquid outlet channel are communicated.

Step three: the fluid pumped out by the first pump body flows into the first liquid outlet and flows out of the box body through the first liquid outlet flow channel.

Step four: the oil storage barrel outputs fluid, and the fluid flows through the second fluid supply channel through the second fluid port, flows out of the third fluid port and is sucked into the second pump body.

Step five: the reciprocating plate is driven by the driving device to move downwards, the reciprocating plate extrudes the second pump body and stretches the first pump body, and the first pump body is promoted to pump fluid and the second pump body is promoted to output fluid.

Step six: the second telescopic device extends out, the first telescopic device retracts to block the second liquid supply channel and the first liquid outlet channel, and the first liquid supply channel and the second liquid outlet channel are communicated.

Step seven: the fluid pumped out by the second pump body flows into the third liquid outlet and flows out of the box body through the second liquid outlet flow channel.

Step eight: the oil storage barrel outputs fluid, and the fluid flows through the first liquid supply flow channel through the second liquid port, flows out of the first liquid port and is sucked into the first pump body.

Step nine: and repeating the steps from the beginning of the step.

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