KR200464606Y1 - side contact type fluid transfer device - Google Patents

Abstract

The present invention relates to a surface-contact fluid transfer device, in terms of the configuration, the pump piston 12 and the pump piston 12 is reciprocated by the cylinder 12a is inserted, the suction hole 14a at both ends Pump body 10 is provided with a pump chamber 14 and the discharge hole (14b) is formed; And a surface contact valve 20 installed on each of the suction hole 14a and the discharge hole 14b, the side contact valve 20 being opened and closed in opposite directions in association with the operation direction of the cylinder 12a. .
Accordingly, the present invention is that the valve rod and the fixed and flow block is in close contact with the contact surface through the airtight surface to control the transfer of fluid, even when used for the supply of stiffening chemicals including the pillar and the battery solution, the airtightness due to wear and tear Phenomenon is prevented, and in particular, when used as a pump, the pump cylinder is connected after the operation of one of the first and second valve cylinders is completed, so that the effect of improving the supply accuracy of the liquid is not affected by the operating speed. have.

Description

Side contact type fluid transfer device

The present invention relates to a surface contact fluid transfer device, and more particularly to a surface contact fluid transfer device for quantitatively supplying the stiffening chemicals including the pillar and the battery solution.

In general, a fluid transfer control device including a valve and a metering pump is used to precisely control the mixing ratio in the precision industry, including semiconductor, food, and drug manufacturing. In the case of a metering pump, a reciprocating motion of the piston The liquid injected through the injection port is supplied to the desired place through the discharge port, wherein each of the components constituting the metering pump is maintained airtight depending on the O-ring.

Looking at the metering pump disclosed in the prior art, the "quantitative discharge pump" of the Utility Model Registration No. 20-0352227, the liquid is sucked into the metering chamber by the suction force of the metering piston and the discharge is also made by the forward movement of the metering piston It is to make the inflow and discharge passage of the liquid is made simple, and fine adjustment of the discharge amount is possible.

However, the above-mentioned quantitative discharging pump has a purpose to make it possible to finely control the discharging amount while maintaining the discharging amount of the liquid in a quantitative manner, but there are many problems in use.

First, the amount of liquid discharged instantaneously as the internal pressure of the metering pump is changed according to the operating speed of the metering pump is not kept constant, and since the O-ring contracts, the volume of liquid contained is changed. Although the tolerance of 3/10000 must be maintained, precise control is impossible.

Second, O-rings are easily worn out due to thousands of repeated operations per day, and the O-rings need to be replaced every 3 to 7 days. Especially, the life of the O-rings when used for the supply of reinforced chemicals containing pillars or batteries containing particles. A shorter problem was followed.

Third, the internal pressure of the metering cylinder is lowered to suck the liquid when the metering piston is lifted to inhale the liquid.At this time, air or foreign matter flows in between the metering piston and the O-ring, resulting in the liquid being discharged or the precision of the discharge amount deteriorated. .

On the other hand, the valve for controlling the transfer of the fluid has the same problem as the above-described metering pump, that is, configured to turn on / off the fluid supply by the transfer of the intermittent rod, each component is dependent on the O-ring airtightness As it is maintained, the O-ring wears easily due to thousands of repetitive operations per day, and the O-ring needs to be replaced every 3 to 7 days, and the life of the O-ring when used for supplying reinforced chemicals containing pillars or batteries containing particles. This further shortcoming followed.

Accordingly, the present invention was conceived to solve the above problems, and the discharge amount is precisely controlled without being affected by the change in the operating speed, and the corrosion resistance and the chemical resistance are suitable for the stiffening chemicals including the pillar and the battery solution. It is an object of the present invention to provide a surface contact fluid transfer control device having excellent durability.

In order to achieve this object, a feature of the present invention is that the pump piston 12 and the pump piston 12 are reciprocated by the cylinder 12a, and the suction piston 14a and the discharge hole 14b are inserted at both ends. A pump body 10 having a pump chamber 14 formed therein; And a surface contact valve 20 installed on each of the suction hole 14a and the discharge hole 14b, the side contact valve 20 being opened and closed in opposite directions in association with the operation direction of the cylinder 12a. .

At this time, the surface contact valve 20 is reciprocated by the first and second valve cylinder (20a, 20b) provided at both ends, the valve rod 22 through which the first transfer hole (22a); The valve rod 22 is accommodated, the fixed block 24 is installed at a position facing the one end of the first conveying hole (22a) and the second conveying hole (24a) and the first conveying hole (22a) And a valve body 28 provided at a position facing the other end of the side) and having a flow block 26 to form a third transfer hole 26a.

In addition, a high roughness airtight surface 30 is formed on the corresponding surface where the valve rod 22 and the fixed and flow blocks 24 and 26 are interviewed to be in close contact with each other.

In addition, the flow block 26 is characterized in that the spring (26b) at one end is provided in close contact with the valve rod (10).

In addition, the pump piston 12 is characterized in that the feeding distance is precisely controlled by the gauge rod 52 of the micro gauge 50 installed on the pump cylinder 12a.

In addition, the liquid residual groove 60 is formed on the inner circumferential surface of the pump chamber 14, and the liquid blocking seal 62 is provided on the pump piston 12 corresponding to the liquid residual groove 60.

In addition, it is characterized in that it is provided with a transparent leakage check tube 70 in communication with the liquid residual groove 60 is installed on the outside of the pump body 10 indicating the amount of leaked liquid.

In addition, the suction hole (14a) of the pump body 10 is located at the bottom, the discharge hole (14b) is located in the upper portion is characterized in that the bubbles generated during the pumping operation is discharged through the discharge hole (14b). It is done.

According to the above configuration and operation, the present invention wears even when used for the supply of stiffening chemicals including pillars and battery liquids as the valve rod and the fixed / flow block are in close contact with the airtight surface by intermittent contact with the fluid. Due to airtightness deterioration is prevented and doubler fluid supply accuracy is improved.

1 is a perspective view showing the surface contact fluid transfer apparatus according to the present invention as a whole.
Figure 2 is a schematic view showing a surface contact fluid transfer apparatus according to the present invention as a whole.
FIG. 3 is a configuration diagram cut along the line AA ′ of FIG. 2. FIG.
FIG. 4 is a configuration diagram cut along the line BB ′ of FIG. 2. FIG.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a surface-contact fluid transfer device, wherein the surface-contact fluid transfer device is precisely controlled in the discharge amount without being affected by the change in operating speed, and is used for the rigid chemicals including the pillar and the battery liquid. In order to prevent malfunction due to wear, including the pump body 10, the surface contact valve 20 is made of a main configuration.

In the pump main body 10 according to the present invention, a pump piston 12 and a pump piston 12 are inserted into and reciprocated by a cylinder 12a, and suction holes 14a and discharge holes 14b are formed at both ends. A pump chamber 14 is provided. The cylinder 12a is connected to the pump piston 12 at one end, and the pump piston 12 reciprocates in the pump chamber 14 to discharge the fluid introduced into the suction hole 14a through the discharge hole 14b. The pumping operation is performed.

At this time, the cylinder (12a) is formed by a pair of air transfer hole to be operated by pneumatic pressure control operation independently of the surface contact valve 20 to be described later to perform the pumping operation, or as shown in Figure 4 the cylinder 12a And the air transfer hole of the surface contact valve 20 is connected to communicate with each other is formed in a structure that is linked.

That is, in FIG. 4, a first air transfer hole of one side of the cylinder 12a is responsible for opening the surface contact valve 20 installed at the suction hole 14a side of the pair of surface contact valves 20. It is in communication with the exhaust valve of the second valve cylinder 20b which is responsible for the closing operation of the surface contact valve 20 provided at the exhaust valve 14b of the valve cylinder 20a, and the air transfer hole of the other side is sucked in. Opening operation of the surface contact valve 20 installed on the exhaust and discharge holes 14b side of the second valve cylinder 20b which is in charge of closing the surface contact valve 20 installed on the hole 14a side. It is connected to the exhaust valve of the first valve cylinder (20a) that is responsible for the operation, at this time the line to which compressed air is transferred to the air transfer hole side of the cylinder (12a) is reduced to the operation of the surface contact valve 20 by delaying the flow of compressed air This is done first.

Accordingly, when the fluid filled in the pump chamber 14 is discharged, air is injected into the second valve cylinder 20b of the surface contact valve 20 installed on the suction hole 14a side to close and operate the discharge hole 14b. As air is introduced into the first valve cylinder 20a of the surface contact valve 20 installed on the side and opened, then compressed air is injected into the air transfer hole of the cylinder 12a to operate the pump piston 12. Pumping operation is performed.

At this time, the suction hole (14a) of the pump body 10 is located in the lower portion, the discharge hole (14b) is located in the upper portion of the pump chamber is formed so that bubbles generated during the pumping operation is discharged through the discharge hole (14b) (14) Deterioration of fluid supply accuracy due to bubbles remaining inside is prevented.

On the other hand, the lifting and lowering operation position of the cylinder 12a is detected by a proximity sensor installed outside the pump body 10 so that the pumping operation is continuously repeated.

Further, the pump piston 12 is precisely controlled by the gauge rod 52 of the micro gauge 50 provided on the cylinder 12a. The micro gauge 50 is a conventional gauge in which the protruding length of the gauge rod 52 is precisely controlled by the rotational force of the lever. The micro gauge 50 is installed so that the gauge rod 52 is coaxial with the pump piston 12 and the gauge rod 52. The feeding distance of the pump piston 12 is limited according to the protruding length of the), and the fluid supply amount is precisely controlled.

In addition, a liquid residual groove 60 is formed on the inner circumferential surface of the pump chamber 14, and a liquid blocking seal 62 is provided on the pump piston 12 corresponding to the liquid residual groove 60. The liquid residual groove 60 is isolated from the space where the fluid is filled by the U-shaped packing, and is formed on the inner circumferential surface of the pump chamber 14 where the pump piston is located to collect the leaked liquid.

Accordingly, when the liquid leaks between the pump piston 12 and the pump chamber 14 due to abrasion of the U-shaped packing U, which maintains the airtightness of the pump chamber 14, the leakage liquid transferred through the pump piston 12 is blocked. Since the liquid is dropped into the seal 62 and collected on the liquid residual groove 60, the leaked liquid flows into the cylinder 12a through the pump piston 12, thereby preventing the problem of failure.

On the other hand, it is preferable that one end of the liquid residual groove 60 is opened to the outside of the pump body 10 so that the operation state of the pump piston 12 can be visually inspected during use.

In addition, it is provided with a transparent leakage check tube (70) indicating the amount of leaked liquid is installed on the pump body 10 outside while communicating with the liquid residual groove (60). Accordingly, when the liquid leaks between the pump piston 12 and the pump chamber 14 due to the airtightness of the U-shaped packing U, the leaked liquid is collected in the liquid residual groove 60, so that the transparent leakage check tube 70 is shown in FIG. As it can be confirmed from the outside through the pump body 10, without having to disassemble the pump body (10) can be visually confirmed the replacement time, there is an advantage that can be quickly responded to the malfunction caused by leakage.

On the other hand, the U-shaped packing (U) is formed in the U-shaped seal portion outside the U-shaped elastic ring, the U-shaped open portion is located in the direction in which the pressure is generated so that the pump piston 12 is applied to the internal pressure during the pumping operation U-shaped packing (U) is opened by the open, usually by the elastic force of the U-shaped elastic ring to maintain the airtight between the pump piston 12 and the pump chamber (14).

In addition, the surface contact valve 20 according to the present invention is installed on the suction hole (14a) and the discharge hole (14b), respectively, and is connected to the operating direction of the cylinder (12a) open and close operation in the opposite direction. That is, when the pump piston 12 suctions the fluid, the surface contact valve 20 installed at the discharge hole 14b side is closed and the surface contact valve 20 installed at the suction hole 14a side is opened. When the pump piston 12 discharges the fluid, the surface contact valve 20 installed on the suction hole 14a side is closed and the surface contact valve 20 installed on the discharge hole 14b side is operated. ) Is open.

At this time, the surface contact valve 20 is reciprocated by the first and second valve cylinder (20a, 20b) provided at both ends, the valve rod 22 through which the first transfer hole (22a); The valve rod 22 is accommodated, the fixed block 24 is installed at a position facing the one end of the first conveying hole (22a) and the second conveying hole (24a) and the first conveying hole (22a) It is configured to include; the valve body 28 is provided at a position facing the other end of the) is provided with a flow block 26, the third transfer hole (26a) is formed.

Here, the valve rod 22 is formed in the shape of a square rod to be closely inserted between the fixed block 24 and the flow block 26 to be interviewed, and the first and second valve cylinders 20a and 20b of both ends are provided. Operation is carried straight line. Then, the first transfer hole 22a is formed so that the second transfer hole 24a and the third transfer hole 26a communicate with each other at a position where the valve rod 22 is in close contact with one side. The valve 20 shows an open operation when the first valve cylinder 20a is operated and a closed operation when the second valve cylinder 20b is operated.)

At this time, a high illuminance hermetic surface 30 is formed on the corresponding surface where the valve rod 22 and the fixed / flow blocks 24 and 26 are interviewed. That is, since the both ends of the valve rod 10 are adhered to the fixed and flow blocks 22 and 24 by the hermetic surface 30 processed into an ultra-high mirror surface, the valve rod 10 is kept highly airtight during linear reciprocation, Even if it is used for supplying stiffened chemicals including pillars and batteries, there is no airtight seal to prevent airtightness deterioration due to abrasion of the airtight member, thereby maintaining long life.

In addition, the flow block 24 is installed to flow in the surface contact valve 20, the spring 26b is provided at one end and is in close contact with the valve rod 22. The springs 26b are installed at least at two positions on the valve body 28 corresponding to the flow block 24, and the flow block 24 is closely supported on the valve rod 22 by the elastic force of the spring 26b. Thus, the airtightness between the valve rod 22 and the fixed / flow blocks 22 and 24 is maintained at a high level.

In operation, the pump piston (1) is opened with the surface contact valve (20) installed on the suction hole (14a) first and the surface contact valve (20) installed on the discharge hole (14b) closed. 12) is retracted and fluid is sucked into the pump chamber 14.

Subsequently, the pump piston 12 pumps the pump chamber while the surface contact valve 20 provided on the discharge hole 14b is opened and the surface contact valve 20 installed on the suction hole 14a is closed. (14) The pumping operation for advancing the inside to discharge the fluid to the discharge hole 14b is repeated.

10: pump body 20: surface contact valve 30: airtight surface

Claims (8)

A pump main body including a pump piston 12 reciprocated by a cylinder 12a and a pump chamber 14 into which a pump piston 12 is inserted and at which both suction holes 14a and discharge holes 14b are formed. 10;
And a surface contact valve 20 installed on each of the suction hole 14a and the discharge hole 14b and open / closed in opposite directions in association with the operation direction of the cylinder 12a.
The surface contact valve 20 is a valve rod 22 reciprocated by the first and second valve cylinders (20a, 20b) provided at both ends, the first transfer hole (22a) is formed through; The valve rod 22 is accommodated, the fixed block 24 is installed at a position facing the one end of the first conveying hole (22a) and the second conveying hole (24a) and the first conveying hole (22a) And a valve body (28) having a flow block (26) having a third transfer hole (26a) formed at a position opposite to the other end of the head). . delete The method of claim 1,
And a gas-tight surface (30) of high illuminance formed on a corresponding surface where the valve rod (22) and the fixed / flow block (24) (26) are in contact with each other, and are in close contact with each other. 3. The method according to claim 1 or 2,
The flow block 26 is a surface contact type fluid transfer device, characterized in that the spring (26b) at one end is provided in close contact with the valve rod (10). 3. The method according to claim 1 or 2,
The pump piston (12) is a surface contact fluid transfer device, characterized in that the conveying distance is precisely controlled by the gauge rod (52) of the micro gauge (50) installed on the pump cylinder (12a). 3. The method according to claim 1 or 2,
The liquid contact groove 60 is formed on the inner circumferential surface of the pump chamber 14, and the liquid contact seal 62 is provided on the pump piston 12 corresponding to the liquid residual groove 60. Conveying device. The method according to claim 6,
The surface contact fluid transfer device, characterized in that the transparent leakage check tube (70) which is in communication with the liquid residual groove (60) is installed outside the pump body (10) indicating the amount of leaked liquid is provided. 3. The method according to claim 1 or 2,
The suction hole (14a) of the pump body 10 is located at the bottom, the discharge hole (14b) is located in the upper portion is characterized in that the bubbles generated during the pumping operation is formed to be discharged through the discharge hole (14b) Surface contact fluid transfer device.

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