The spray bottle is a very useful machine and a perfect display of basic plumbing principles. The spray bottle head consists of only a few parts. It has a trigger lever that can trigger a small pump. The pump is mounted on a plastic tube that draws cleaning fluid from the bottom of the tank. The pump pushed the liquid down into a narrow bucket and made a small hole at the muzzle. The holes or nozzles are used to collect the flowing liquid to form a concentrated stream.
The only complicated element in the design is the fluid pump, which is as simple as that. The main moving element is a piston housed in a cylinder. There is a small spring in the cylinder. To operate the pump, pull the trigger back and push the piston into the cylinder. The moving piston compresses the spring, so when you release the trigger, the piston is pushed back from the hydraulic cylinder. These two strokes of the piston enter the cylinder and enter again, forming the entire pump cycle.
The downstroke (piston push) reduces the cylinder area, forcing fluid out of the pump. The upstroke is a spring that pushes the piston back, expanding the cylinder area and drawing fluid into the pump. In a spray bottle, you need to inhale the cleaning solution from the container below and push it out through the pen holder above. In order for all fluid to flow through the syringe, the pump can only push the fluid upwards, not force the fluid back into the tank. In other words, fluid can only flow through the pump in one direction.
The device that makes this possible is called a check valve. The spray bottle has two check valves in the pump system: one between the pump and the reservoir, and the other between the pump and the nozzle. Normally, the valve between the pump and the tank consists of a small rubber ball that is neatly placed in a small seal. The sides of the seal are angled so that the ball does not fall. Depending on the design, gravity or smaller springs hold the ball on the seal when not pumping, blocking the water channel. When the piston is removed (when the trigger is released), the expansion area of the cylinder draws fluid underneath and pulls the ball out of the seal. As the ball is lifted, fluid can flow freely from the container. However, when you squeeze the trigger, the external force of the moving fluid pushes the ball into the seal, blocking the passage to the reservoir. Therefore, the pressurized fluid is only pushed into the barrel.
In the injection mechanism shown in the figure above, the check valve between the pump and the nozzle is a cup-shaped piece that can be installed at the end of the barrel. During the upward stroke, inward pressure from the pump pulls the suction cup towards the syringe, so air cannot flow in through the nozzle. On the downward stroke, the discharged liquid lifts the cup slightly from the bucket and flows through the nozzle. Without the second non-return valve, the pump system will not be able to draw liquid from the tank because there will be no suction (the air pressure will not drop). The upward stroke does not reduce the air pressure in the pump; it only draws more air to maintain that pressure.
The valve can also be used as a shut-off system. When screwing in the nozzle, it presses the valve cup tightly against the barrel, so you cannot force any liquid out. When you release the nozzle, there is plenty of room for the valve cup to move back and forth.
When using the spray bottle for the first time, you must squeeze the trigger several times to spray any cleaning fluid. There are two reasons for this delay:
Before starting pumping, set the spray gun to stroke down, not up (the piston is outside the cylinder). When you first pull the trigger backwards and the piston is pushed in, no liquid can be drawn out; therefore, when you pull the trigger back, no liquid can be drawn out. There is only air in the cylinder chamber. The piston must slide out to draw any fluid out of the reservoir.
During the first upstroke, the pump starts to draw cleaning fluid from the reservoir. However, it also draws in air from a plastic tube leading to the reservoir. You must drive this air through the pump mechanism before you start spraying the cleaning fluid. This may take several drops and rises.
This simple pump design is called a reciprocating piston pump and can be used for a variety of tasks. In addition to pressurizing water, air, and many other fluids, this design can extract water and oil from the ground. We even have a reciprocating pump built into the body: your heart expands to suck low-pressure blood through one check valve, and then contracts to force high-pressure blood into the body through another check valve. The basic mechanisms that make ordinary spray bottles work can also keep you alive!
As a professional Plastic Sprayers Manufacturer . Ningbo RUICHANG Commodity Packaging CO , Ltd . provides high-quality products for various containers and bottles. The plastic sprayer has high working efficiency and good spraying effect. Welcome to buy: https://www.ruichangpacking.com/product/
The only complicated element in the design is the fluid pump, which is as simple as that. The main moving element is a piston housed in a cylinder. There is a small spring in the cylinder. To operate the pump, pull the trigger back and push the piston into the cylinder. The moving piston compresses the spring, so when you release the trigger, the piston is pushed back from the hydraulic cylinder. These two strokes of the piston enter the cylinder and enter again, forming the entire pump cycle.
The downstroke (piston push) reduces the cylinder area, forcing fluid out of the pump. The upstroke is a spring that pushes the piston back, expanding the cylinder area and drawing fluid into the pump. In a spray bottle, you need to inhale the cleaning solution from the container below and push it out through the pen holder above. In order for all fluid to flow through the syringe, the pump can only push the fluid upwards, not force the fluid back into the tank. In other words, fluid can only flow through the pump in one direction.
The device that makes this possible is called a check valve. The spray bottle has two check valves in the pump system: one between the pump and the reservoir, and the other between the pump and the nozzle. Normally, the valve between the pump and the tank consists of a small rubber ball that is neatly placed in a small seal. The sides of the seal are angled so that the ball does not fall. Depending on the design, gravity or smaller springs hold the ball on the seal when not pumping, blocking the water channel. When the piston is removed (when the trigger is released), the expansion area of the cylinder draws fluid underneath and pulls the ball out of the seal. As the ball is lifted, fluid can flow freely from the container. However, when you squeeze the trigger, the external force of the moving fluid pushes the ball into the seal, blocking the passage to the reservoir. Therefore, the pressurized fluid is only pushed into the barrel.
In the injection mechanism shown in the figure above, the check valve between the pump and the nozzle is a cup-shaped piece that can be installed at the end of the barrel. During the upward stroke, inward pressure from the pump pulls the suction cup towards the syringe, so air cannot flow in through the nozzle. On the downward stroke, the discharged liquid lifts the cup slightly from the bucket and flows through the nozzle. Without the second non-return valve, the pump system will not be able to draw liquid from the tank because there will be no suction (the air pressure will not drop). The upward stroke does not reduce the air pressure in the pump; it only draws more air to maintain that pressure.
The valve can also be used as a shut-off system. When screwing in the nozzle, it presses the valve cup tightly against the barrel, so you cannot force any liquid out. When you release the nozzle, there is plenty of room for the valve cup to move back and forth.
When using the spray bottle for the first time, you must squeeze the trigger several times to spray any cleaning fluid. There are two reasons for this delay:
Before starting pumping, set the spray gun to stroke down, not up (the piston is outside the cylinder). When you first pull the trigger backwards and the piston is pushed in, no liquid can be drawn out; therefore, when you pull the trigger back, no liquid can be drawn out. There is only air in the cylinder chamber. The piston must slide out to draw any fluid out of the reservoir.
During the first upstroke, the pump starts to draw cleaning fluid from the reservoir. However, it also draws in air from a plastic tube leading to the reservoir. You must drive this air through the pump mechanism before you start spraying the cleaning fluid. This may take several drops and rises.
This simple pump design is called a reciprocating piston pump and can be used for a variety of tasks. In addition to pressurizing water, air, and many other fluids, this design can extract water and oil from the ground. We even have a reciprocating pump built into the body: your heart expands to suck low-pressure blood through one check valve, and then contracts to force high-pressure blood into the body through another check valve. The basic mechanisms that make ordinary spray bottles work can also keep you alive!
As a professional Plastic Sprayers Manufacturer . Ningbo RUICHANG Commodity Packaging CO , Ltd . provides high-quality products for various containers and bottles. The plastic sprayer has high working efficiency and good spraying effect. Welcome to buy: https://www.ruichangpacking.com/product/
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