CN111561436A - Ultrapure water high-pressure pump - Google Patents

Abstract

An ultrapure water high-pressure pump includes at least one combined cylinder body. Each combined cylinder body includes a hydraulic cylinder, an empty shell and a water cylinder body. The right side of the hydraulic cylinder body is fixedly connected to the left end of the empty shell. The middle section of the piston rod passes through the empty shell. The right end of the piston rod penetrates the water cylinder body, and the left end of the water cylinder body and the right end of the empty shell are fixedly connected. The water cylinder body has a water inlet and a water outlet. A piston rod sealing device is provided at the left end of the water cylinder body. The piston rod sealing device is in the form of a combined sealing ring. When the combined cylinder body is multiple, it is a series structure in which the water inlet and the water outlet are connected in sequence. When this ultrapure water high-pressure pump is connected to an ultrapure water machine to pressurize ultrapure water, no water flow pulsation will be generated, no noise reduction is required, no bubbles will be generated, and the ultrapure water machine will not be damaged.

Description

An ultrapure water high pressure pump

technical field

The invention belongs to the field of water pumps, in particular to an ultrapure water high-pressure pump.

Background technique

At present, the ultrapure water machine is used to make ultrapure water. When the ultrapure water is produced and then connected to the equipment that pressurizes the ultrapure water to pressurize the ultrapure water, when the pressure exceeds 40Mpa, water pulsation and bubbles will be generated, which will damage the ultrapure water. Pure water machine.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide an ultrapure water high-pressure pump, which can be connected to an ultrapure water machine to pressurize the ultrapure water without damaging the ultrapure water machine.

The technical solutions adopted are:

A high-pressure pump for ultrapure water includes at least one combined cylinder block.

Its technical points are:

Each combined cylinder block includes a hydraulic cylinder, an empty casing and a water cylinder block.

The right side of the hydraulic cylinder block is fixedly connected to the left end of the empty shell.

The middle section of the piston rod passes through the hollow housing.

The right end of the piston rod penetrates into the water cylinder body, and the left end of the water cylinder body is fixedly connected with the right end of the empty shell.

The water tank body has a water inlet and a water outlet.

The left end of the water cylinder body is provided with a piston rod sealing device.

The piston rod sealing device is in the form of a combined sealing ring.

The combined cylinders are in the form of a series structure in which the water inlet and the water outlet are connected in sequence.

Its advantages are:

When the ultrapure water high-pressure pump is connected to an ultrapure water machine to pressurize the ultrapure water, there will be no water pulsation, no noise reduction, no bubbles, and no damage to the ultrapure water machine.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic structural diagram of the cooperation of a piston rod, a piston rod sealing device and a water cylinder block.

Hydraulic cylinder 1, piston 2, piston rod 3, empty shell 4, water cylinder block 5, piston rod sealing device 6, water inlet 7, water outlet 8, pressure sensor 9, valve 10, ultrapure water machine 11, water pump 12 , Metal sealing ring 13, elastic O-ring 14, elastic bevel ring 15, metal sealing ring bevel 16, metal sealing ring plane 17, sealing groove 18, metal sealing ring plane groove 19.

Detailed ways

An ultrapure water high pressure pump includes at least one combined cylinder block, each combined cylinder block includes a hydraulic cylinder 1 , an empty shell 4 and a water cylinder block 5 .

The piston 2 of the hydraulic cylinder 1 is inside the cylinder of the hydraulic cylinder 1, and the piston rod 3 extends out of the cylinder of the hydraulic cylinder 1.

The right side of the hydraulic cylinder 1 is fixedly connected to the left end of the empty shell 4 .

The middle section of the piston rod 3 passes through the hollow housing 4 .

The right end of the piston rod 3 penetrates into the water cylinder body 5 , and the left end of the water cylinder body 5 is fixedly connected with the right end of the hollow shell 4 .

The right end of the water cylinder body 5 has a water inlet 7 and a water outlet 8 .

The left end of the water cylinder body 5 is provided with a piston rod sealing device 6 for cooperating with the right end of the piston rod 3 to seal.

The piston rod sealing device 6 is in the form of a combined sealing ring, and one form that can be adopted is: including a metal sealing ring 13 , an elastic O-ring 14 and an elastic bevel ring 15 .

The metal sealing ring 13 is arranged on the piston rod 3,

On the right side of the outer surface of the metal sealing ring 13, there is a metal sealing ring inclined surface 16, and the metal sealing ring inclined surface 16 extends and slopes from the upper left to the lower right.

There is a metal sealing ring plane 17 on the left side of the metal sealing ring inclined surface 16 , an elastic O-ring 14 is sleeved on the outer side of the metal sealing ring plane 17 , and the elastic O-ring 14 is arranged in the metal sealing ring plane groove 19 .

There is a corresponding elastic bevel ring 15 on the right side of the inclined surface 16 of the metal sealing ring.

The piston rod sealing device 6 is arranged in the sealing groove 18 opened in the water cylinder block 5 .

The elastic O-ring 14 and the elastic bevel ring 15 can be made of conventional elastic sealing materials, as well as other O-rings.

When the piston rod 3 moves to the left or right, the combined sealing ring of the piston rod sealing device 6 seals water in two directions respectively.

The outlet of the ultrapure water machine 11 (this is a known technology) is connected to the water inlet 7 of the first water cylinder 5 of the two combined cylinders through the water pump 12, and the water outlet 8 is connected to the second water cylinder. The water inlet 7 of the body 5 enters water, and the water outlet 8 outputs water. A pressure sensor 9 and a valve 10 are arranged on the pipeline of the rearmost water outlet 8, and the pressure sensor 9 is located in front of the valve 10. (Two combined cylinders are in series).

The middle section of the piston rod 3 is located in the hollow shell 4, which can prevent the oil brought from the hydraulic cylinder 1 from being brought into the water cylinder block 5 and polluting the ultrapure water.

The double arrow in Figure 1 shows the direction of water flow, and the single arrow shows the reciprocating motion of the piston rod 3 to pressurize the ultrapure water.

When the pressure sensor 9 detects that the water pressure reaches 40Mpa, the PLC controls to open the valve 10 to release high-pressure water.

Claims (5)

1. An ultrapure water high-pressure pump comprising at least one combined cylinder, characterized in that:

each combined cylinder body comprises a hydraulic cylinder (1), a hollow shell (4) and a water cylinder body (5);

the right side of the cylinder body of the hydraulic cylinder (1) is fixedly connected with the left end of the hollow shell (4);

the middle section of the piston rod (3) penetrates through the hollow shell (4);

the right end of the piston rod (3) penetrates into the water cylinder body (5), and the left end of the water cylinder body (5) is fixedly connected with the right end of the hollow shell (4);

the water cylinder body (5) is provided with a water inlet (7) and a water outlet (8).

2. The high-pressure pump for ultrapure water as recited in claim 1 wherein:

the left end of the water cylinder body (5) is provided with a piston rod sealing device (6).

3. The high-pressure pump for ultrapure water as recited in claim 2 wherein:

the piston rod sealing device (6) is in a combined sealing ring form.

4. The high-pressure pump for ultrapure water as recited in claim 3 wherein:

the piston rod sealing device (6) comprises a metal sealing ring (13), an elastic O-shaped ring (14) and an elastic inclined surface ring (15);

the metal sealing ring (13) is arranged on the piston rod (3),

a metal sealing ring inclined plane (16) is arranged on the right side of the outer surface of the metal sealing ring (13), and the metal sealing ring inclined plane (16) extends and inclines from the upper left to the lower right;

a metal sealing ring plane (17) is arranged on the left side of the metal sealing ring inclined plane (16), an elastic O-shaped ring (14) is sleeved on the outer side of the metal sealing ring plane (17), and the elastic O-shaped ring (14) is arranged in a metal sealing ring plane groove (19);

a corresponding elastic inclined surface ring (15) is arranged on the right side of the inclined surface (16) of the metal sealing ring, and the inclined surface of the elastic inclined surface ring (15) is arranged corresponding to the inclined surface (16) of the metal sealing ring;

the piston rod sealing device (6) is arranged in a sealing groove (18) formed in the water cylinder body (5).

5. The high-pressure pump for ultrapure water as recited in claim 1 wherein:

the combined cylinder body is in a serial structure form that a water inlet (7) and a water outlet (8) are sequentially connected when a plurality of combined cylinder bodies are used.

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