KR200409331Y1 - Rotatable opening and shutting type plunger pump - Google Patents

Abstract

The present invention is a plunger pump for injecting and discharging a fluid according to a change in volume while a piston reciprocates in a cylinder, and in particular, a valve body having a rotary valve body embedded therein is installed at a lower portion of the cylinder in which the piston is embedded. As the valve body is rotated by an opening / closing cylinder mounted on one side of the hydraulic cylinder, the cylinder, the storage tank, and the discharge path are organically opened or closed to pump various fluids such as gravel, sand, and coarse manure in the water. By doing

Since the opening and closing of the suction and discharge passages are precisely controlled during the suction stroke and the discharge stroke, the pump efficiency can be improved and the pump life is greatly extended because it has sufficient response force from the excessive pressure applied to the valve body. For this reason, it is a rotary opening and closing plunger pump which has a very economical effect because of its simple structure and improved volumetric ratio.

Plunger Pump, Piston, Valve Body, Rotary Valve Body, Inlet, Outlet

Description

Rotary opening and closing plunger pump

1 is an exploded perspective view of the present invention plunger pump

Figure 2 is a cutaway perspective view of the coupled state of the present invention plunger pump

Figure 3 is an overall cross-sectional view of the present invention plunger pump

4a and 4b is an operating state diagram of the present invention plunger pump,

4A is a sectional view of the suction stroke

4B is a sectional view of the discharge stroke;

5 is an example of a state of use of the subject innovation plunger pump

Explanation of symbols on the main parts of the drawings

1: hydraulic cylinder 2: piston

3: cylinder 4: flange

5: cylinder open / close 6: cylinder rod

7: Bracket

10: valve body 11: inflow flange

12: discharge flange

20: valve body 21: inflow path

22: discharge path

30: storage tank

The present invention is a plunger pump which sucks and discharges a fluid in accordance with a change in volume while a piston reciprocates in a cylinder. The opening and closing of the suction port and the discharge port are made by a rotary valve body operated by a hydraulic cylinder. The present invention relates to a plunger pump adapted for pumping various fluids such as gravel, sand, coarse manure, and the like.

In the conventional plunger pump, the pistons reciprocate in the cylinders in which the suction pipes and discharge pipes are formed, and the check valves mounted on the pipes alternately operate, so that suction and discharge alternately along the reciprocation of the piston. To get.

However, the aforementioned conventional plunger pump is able to obtain a high pressure transmission power for a fluid having a weak viscosity, but the opening and closing of the suction pipe and the discharge pipe is made by a check valve, so that gravel, sand, coarse manure, etc. In the case of various fluids, coarse particles are caught between the gaps of the check valves, and frequent failures occur, which is not suitable for pumping soil and manure.

In order to solve the problems as described above, the present inventors have devised a plunger pump according to Utility Model Registration No. 35019 on October 22, 1996, but the sliding open / close plunger pump having the structure as described above is leaked by an open / close valve. As the phenomenon occurs, it is possible to operate in a state in which the operation chamber is immersed in various fluids such as gravel, sand, and rough manure, which is included in water, thereby decreasing the variety of uses.

Accordingly, the applicant of the present invention, according to Utility Model Registration No. 398 of January 14, 1997, operates the pumping operation of the cylinder and the operation of the opening / closing plate by adjusting the discharge and suction timing by the hydraulic pump and the hydraulic cylinder. To make it simpler, a plunger has been proposed that allows the pumping of coarse particles while maintaining a strong power output, which is the strength of the plunger pump.

However, the sliding open and close plunger pump as described above has a structure in which the suction stroke and the discharge stroke are variable by the sliding operation opening and closing plate, so that the suction pressure and the discharge pressure acting on the opening and closing plate are significant, There are frequent problems of damage and failure due to excessive overpressure of the mounting member to which the opening and closing plate is fixed.

That is, the opening and closing plate is formed with a through hole, the through hole is sliding up and down, and acts to discharge the fluid by opening and closing the inlet and outlet in accordance with the stroke of the suction cylinder, the fluid is in the state of mucus Or when it is composed of coarse particles, the excessive suction or discharge pressure is applied to the opening and closing plate.

Therefore, excessive pressure causes not only excessive operation, but also deformation and damage caused by this, and there is a problem in that a gap occurs when used for a long time, thereby causing internal pollutants to leak or leak and pollute the environment. .

The present invention has been made to overcome the problems described above, the valve body is mounted on the lower portion of the cylinder with a built-in rotary valve body, the valve body is mounted on the opening cylinder mounted on one side of the hydraulic cylinder As it rotates by organically opening or closing the cylinder, the storage tank and the discharge path to pump various fluids such as gravel, sand, coarse manure, etc.

Since the opening and closing of the suction and discharge passages are precisely controlled during the suction stroke and the discharge stroke, the pump efficiency can be improved and the pump life is greatly extended because it has sufficient response force from the excessive pressure applied to the valve body. It is an object of the present invention to provide a rotationally open / closed plunger pump having a very economical effect since a simple structure and improved volume ratio can be expected.

Hereinafter, preferred embodiments of the present invention will be described.

1 is an exploded perspective view of the plunger pump of the present invention, Figure 2 is a cutaway perspective view of the combined state of the plunger pump of the present invention, Figure 3 is a full sectional view of the plunger pump of the present invention.

A valve body 10 having a rotary valve body 20 embedded therein is mounted at the end of the cylinder 3 in which the piston 2 of the hydraulic cylinder 1 is embedded, and the valve exposed to one side of the valve body 10. Ends of the cylinder rod (6) of the opening and closing cylinder (5) mounted downward to one side of the hydraulic cylinder (1) by a separate flange (4) to the end of the sieve 20 to be spaced apart by the bracket (7) ,

An inlet flange 11 is formed at one side end of the valve body 10 to be connected to a separate storage tank 30, and is discharged in communication with the inside of the valve body 10 at an outer surface of the valve body 10. Flange 12 is formed,

The valve body 20 has a bent inlet passage 21 in communication with the inlet flange 11 and the cylinder 3, and a bent discharge passage in communication with the cylinder 3 and the outlet flange 12 ( 22) are formed respectively,

The discharge passage 22 is closed when the inflow passage 21 is opened by the operation of the opening / closing cylinder 5, and the discharge passage 22 is opened when the inflow passage 21 is closed.

When described in more detail by the accompanying drawings, the operation of the present invention rotationally open and close plunger pump according to the configuration as follows.

As shown in FIG. 4A, the hydraulic cylinder 1 is operated to pump out various wastes, manure, and other fluids in the storage tank 30 to the outside, and the piston 2 inside the cylinder 3 flows in. When the cylinder 1 is moved to the side, the internal pressure of the cylinder 3 drops and becomes a vacuum state. This pressure change acts as a force for attracting the fluid inside the storage tank 30.

At this time, the cylinder rod (5) of the one-side opening and closing cylinder (5) is operated to the cylinder body side when the piston (2) is operated in the insertion direction, the cylinder rod (6) of the opening and closing cylinder (5) is a cylinder As the valve body 20 in the valve body 10 connected by the bracket 7 is retracted toward the body side, the inflow passage 21 communicates with the storage tank 30 and the inside of the cylinder 3. Is set to an angle,

The discharge passage 22 has a rotation angle that is closed to the inside of the cylinder 3 and the discharge passage.

Therefore, since no inflow of air or fluid occurs from the outside, the fluid inside the storage tank 30 can be pulled up to the inside of the cylinder 3 completely, and as shown in FIG. At the moment of protruding again to the valve side through the point, the opening and closing cylinder 5 is operated to protrude the cylinder rod 6, so that the inlet passage 21 is closed while the valve body 20 interlocking therewith rotates. The opening 22 allows the fluid inside the cylinder 3 to be pumped out through the discharge flange 12 along the discharge passage 22.

That is, the cylinder rod 6 has a working distance such that the bracket 7 can be rotated by 100 ° or more, and the valve body 20 connected thereto is also rotated by 100 ° or more by the valve body 10. ) Is to open and close the inlet passage 21 and the outlet passage 22 of the valve body 20 that is closely inserted in the interior of the valve body, the rotation angle is such that the valve body 20 has a more accurate and efficient rotation angle It will be in charge of opening and closing more precise inlet, outlet.

The inflow passage 21 and the discharge passage 22 of the valve body 20 are formed to face in different directions as shown, while the inflow passage 21 is bent in the vertical and rotational axis directions, Since the discharge passage 22 is formed in the vertical and orthogonal rotational directions, the vertical portion of the inflow passage 21 or the rotational axis orthogonal to the discharge passage is opened or closed by rotation of the valve body 20. It is to control the inflow and outflow of the fluid.

Such a plunger pump according to the present invention may fasten one side inlet flange 11 of the valve body 10 to the discharge side of the storage tank 30 as shown in FIG. 5, and the side of the valve body 10. The discharge flange 12 formed on the main surface may be used by attaching a fluid discharge pipe or a hose.

Therefore, the plunger pump as described above has a very robust and excellent operating performance by adopting a relatively simple rotary valve structure.

The rotationally open / closed plunger pump of the present invention as described above is precisely controlled to open and close the suction passage and the discharge passage during the suction stroke and the discharge stroke, so that the pump efficiency can be improved while being sufficient from the excessive pressure applied to the valve body. Because of its responsiveness, the service life of the pump is greatly extended, and because of its simple structure and improved capacity ratio, it is very economical.

Claims (1)

A valve body 10 having a rotary valve body 20 embedded therein is mounted at the end of the cylinder 3 in which the piston 2 of the hydraulic cylinder 1 is embedded, and the valve exposed to one side of the valve body 10. Ends of the cylinder rod (6) of the opening and closing cylinder (5) mounted downward to one side of the hydraulic cylinder (1) by a separate flange (4) to the end of the sieve 20 to be spaced apart by the bracket (7) , An inlet flange 11 is formed at one side end of the valve body 10 to be connected to a separate storage tank 30, and is discharged in communication with the inside of the valve body 10 at an outer surface of the valve body 10. Flange 12 is formed, The valve body 20 has a bent inlet passage 21 in communication with the inlet flange 11 and the cylinder 3, and a bent discharge passage in communication with the cylinder 3 and the outlet flange 12 ( 22) are formed respectively, The discharge passage 22 is closed when the inflow passage 21 is opened by the operation of the opening and closing cylinder 5, and the discharge passage 22 is opened when the inflow passage 21 is closed. Rotary retractable plunger pump.

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