KR20160086576A

KR20160086576A - A piston pump

Info

Publication number: KR20160086576A
Application number: KR1020150004059A
Authority: KR
Inventors: 안성룡; 황세한
Original assignee: 안성룡
Priority date: 2015-01-12
Filing date: 2015-01-12
Publication date: 2016-07-20

Abstract

The present invention relates to a piston pump for spraying a highly viscous material, which can control spraying very precisely without polluting the highly viscous material with high viscosity. The piston pump according to the present invention includes: a pump body which has a container shape with both sides opened, and has a constant internal space; a pump head which is installed to block one open side of the pump body, and has a highly viscous material inlet hole and a highly viscous material outlet hole; a piston which is installed in the inner space of the pump body while being movable back and forth; a piston driving part which is installed by being combined to another side of the pump body, and moves the piston back and forth; a piston coating part which surrounds an outer side of the piston, and has a deformable structure; a working fluid which is filled in the piston coating part; and a valve which is comprised in the pump head, and controls the highly viscous material inlet hole and the highly viscous material outlet hole alternatively in accordance with backward and forward movement of the piston.

Description

{PISTON PUMP}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a piston pump, and more particularly, to a piston pump using a highly viscous material, which can control injection with high precision without causing a highly viscous liquid material to contaminate the piston.

Generally, a piston pump is a mechanism for transferring a gas or a liquid using a reciprocating movement of a piston in a cylinder. Such a piston pump has a problem in that noise is large due to the movement of the piston during operation and durability is deteriorated. Korean Patent Laid-Open Publication No. 10-2012-75759 and the like disclose techniques for solving the problem of noise and durability deterioration of such a piston pump.

However, when the high viscosity viscous material or the like is conveyed, the improved piston pump also has a problem that the piston is contaminated by the high viscous material, which makes it difficult to smoothly drive the piston. And it is difficult to control the liquid material having a high viscosity very accurately.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and it is an object of the present invention to provide a piston pump using a highly viscous material, which can control injection precisely without contaminating a highly viscous liquid material.

According to an aspect of the present invention, there is provided a piston pump including: a pump body having a cylindrical shape with both sides opened; A pump head installed to block an open side of the pump body and having a high viscosity material inlet and a high viscosity material outlet, respectively; A piston installed in the inner space of the pump body so as to be capable of moving back and forth; A piston driving unit coupled to the other side of the pump body to advance and retract the piston; A piston covering portion surrounding the piston from outside and having a deformable structure; Operating oil filled in the inside of the piston covering portion; And a valve provided in the pump head for alternately interrupting the high viscosity material inlet and the high viscosity material outlet in accordance with the forward and backward movement of the piston.

In the present invention, it is preferable that the piston covering portion has a bellows shape.

Further, in the present invention, it is preferable that the piston covering portion is made of Teflon.

The piston pump of the present invention is capable of highly precise injection control with respect to a high viscosity material and is capable of preventing the piston from being contaminated by a high viscosity material in the injection process of a high viscosity material.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing a structure of a piston pump for high viscosity material according to an embodiment of the present invention; FIG.
FIGS. 2 and 3 are views showing the operation of a piston pump for high-viscosity materials according to an embodiment of the present invention.

Hereinafter, a specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1, the piston pump 100 according to the present embodiment includes a pump body 110, a pump head 120, a piston 130, a piston driving unit 140, a hydraulic oil 150, And a valve (160).

First, the pump body 110 has a cylindrical shape in which upper and lower ends are opened, and is a component providing a space and a place where other components can be installed and driven with a certain internal space. Specifically, the pump body 110 also functions as a cylinder through which the piston 130 reciprocates, and also acts as a space for passing a high viscosity material through the piston 110 by flowing the high viscosity material. .

At this time, a cylinder may be additionally provided in the inner space of the pump body 110 where the piston 110 moves.

Next, the pump head 120 is installed to block the opened front end of the pump body 110, as shown in FIG. A high viscosity material inlet 122 and a high viscosity material outlet 124 are formed in the pump head 120 through the pump head 120. At this time, the pump head 120 has a structure that can be repeatedly coupled with the pump body 110, so that it is possible to easily maintain the inside of the pump body 110.

Next, as shown in FIG. 1, the piston 130 is a component that is installed in the inner space of the pump body 110 to be movable back and forth. The piston 130 is driven forward and backward by the piston driving unit 140, and the high viscosity material 1 can be transferred by driving the piston 140 forward and backward. 1, the piston driving unit 140 is coupled to the other side of the pump body 110, that is, to the opposite side to which the pump head 120 is coupled, To the front and rear.

Specifically, in this embodiment, the piston driving unit 140 includes a precision ball screw 142 and a servo motor 144 to precisely control the position and speed of the piston 130 .

1, the piston covering portion 170 is installed in the inner space of the pump body 110 together with the piston 130, and is installed in a structure to cover the piston 130 from the outside. do. Also, it is preferable that the piston covering portion 170 has a bellows shape that can be elastically deformed by itself, since the piston covering portion 170 can be easily driven by driving the piston 130. At this time, in the present embodiment, it is preferable that the piston covering portion 170 is made of a Teflon material having excellent chemical resistance.

As shown in FIG. 1, a hydraulic fluid 150 is filled between the piston 130 and the piston covering portion 170. 2 and 3, when the piston 130 is driven forward and backward in the piston covering portion 170, the volume of the piston covering portion 170 is changed while the piston covering portion 170 Is also changed. Then, the volume of the remaining internal space of the pump body 110 is changed accordingly, so that power for transferring the high-viscosity material 1 is generated.

1, the valve 160 is coupled to the pump head 120. The valve 160 is connected to the high viscosity material inlet 122 and the high viscosity material outlet 122 in accordance with the forward and backward movement of the piston 130, (124) are alternately interrupted. 2, when the piston 130 moves backward and the high viscosity material 1 flows into the pump head 120, the high viscosity material outlet 124 is closed and the high viscosity material inlet 122 are opened to allow the highly viscous substance 1 to flow into the pump body 110. 2, the piston covering portion 170 is also contracted to interlock with the piston 130. As a result, the high viscosity material 1 is introduced into the pump head 120, Is coming.

3, the high-viscosity material inlet 122 is closed and the high-viscosity material outlet 124 is closed only when the piston 130 advances and the high-viscosity material 1 flows out of the pump head 120. On the other hand, So that the high viscosity material 1 filled in the pump body 110 flows out to the outside of the pump head 120. 3, the piston 130 advances, and the piston covering portion 170 expands in conjunction therewith. As a result, the viscous substance 1 inside the pump body 110 is pushed It will leak to the outside.

100: piston pump for high viscosity material according to one embodiment of the present invention
110: pump body 120: pump head
130: Piston 140: Piston driving part
150: hydraulic oil 160: valve
1: High viscosity material

Claims

A pump body having a tubular shape with both sides open and having a constant internal space;
A pump head installed to block an open side of the pump body and having a high viscosity material inlet and a high viscosity material outlet, respectively;
A piston installed in the inner space of the pump body so as to be capable of moving back and forth;
A piston driving unit coupled to the other side of the pump body to advance and retract the piston;
A piston covering portion surrounding the piston from outside and having a deformable structure;
Operating oil filled in the inside of the piston covering portion;
And a valve provided in the pump head for alternately interrupting the high viscosity material inlet and the high viscosity material outlet in accordance with the forward and backward movement of the piston.

The piston according to claim 1, wherein the piston-
Wherein the piston has a bellows shape.

The piston according to claim 2, wherein the piston-
A piston pump for use in a high viscosity material, characterized in that it is made of Teflon.