KR20020057867A - Power washer - Google Patents

Abstract

PURPOSE: A power washer is provided to improve the convenience and the working efficiency and to simplify the assembling structure by installing flange couplings with two bolts and forming a groove between the flange couplings. CONSTITUTION: Water is flowed into an inlet(220) through a booster(210) from a water tank(400). The water is passed through a water supply port(245) from a pump(230). The water is flowed into an inlet chamber(260) through an inlet of a pressure control valve(300). The water is drained through a bypass valve(270) by connecting with a drain hose(285) of a drain port(280). A car is washed by the water. Thereby, the working efficiency is improved and the loss of power is reduced by easily arriving the water up to the pressure control valve.

Description

Power washer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure washer and a power washer using the same, and to a power washer equipped with a pressure inlet inlet and a bypass valve in the outlet of the left and right rotating flow pressure control valve.

1 and 2 is a conventional technology (Korea registration number actual 1991-0005395)

This is a front view of the assembly of the power atomizer with the discharge control valve.

The above invention is to form a groove (1b) and a threaded portion (1c) on the upper end and the periphery of the valve body (1) from which the rib (1a) is drawn to one side and the inlet chamber (2) and smaller than A water discharge passage 3 and a sealed chamber 4 are formed to form a space 6 having a discharge port 5 and a female screw on one side of the inflow chamber 2 so as to penetrate the outside. The hydraulic passage 8 is formed between the space 6 and the upper side of the sealed 4, and the exhaust hole 9 is drilled through the outside of the sealed chamber 4.

In addition, the fixed plate 10 connected to the pump P forms a step 10b at the upper end of the water inlet 10a at the center to make the spring 16 and the ball valve body 17 firm, and then the bottom of the inlet chamber 2. Screwed into the ball valve body 17 so that it is in contact with the bottom of the discharge path (3), the hexagonal hose connector (11) to which the spray hose (H) of the nozzle body (N) is connected to the center drain (11a) A stepped 11b is formed in the end thereof, and the 0-ring 18 is fitted at the tip, and the hydraulic valve body 12 in which the inlet hole 12b is drilled in all directions around the discharge hole 12a and the spring 19 After inserting together, it is screwed into the space 6 so that the hydraulic passage 8 is not blocked so that the 0-ring 18 is in contact with the rounded edge of the outlet 5, and the opposite outlet 7 ) Is coupled to the toothed hose connector (13).

In addition, the fixing cap 15 formed at the top of the fixing portion 15a and the hexagonal tightening portion 15b are integrally cut in both side surfaces of the fixing portion 15a to form a guide groove 15d. In the working shaft 14 in which the washer portion 14b is formed such that the pin hole 14d and several grooves are formed between the screw portion 14a and the tip portion 14c, several grooves of each of the washer portions 14b are formed. Insert the ring 20 into the insertion hole 15c of the fixing cap 15, insert the fixing pin 22 into the pin hole 14d, and place it in the guide groove 15d. After the pressure regulating spring 21 is attached and the washer 23 and the nut 24 are fastened, the distal end portion 14c of the operating shaft 14 passes through the airtight chamber 4 and the discharge path 3 through the ball valve body. The fixing cap 15 is coupled to the screw portion 1c of the valve body 1 so as to be in contact with the upper end of the valve 17, and the cap 25 is attached to the upper portion of the fixing cap 15 so that the foreign matter is pressed onto the pressure control spring 21. Do not inflow.

Reference numeral 26,27 is a packing and 28,29 is a 0-ring.

The invention has been a lot of inconvenience to assemble in a convenient direction when the work is not movable by the fixed plate to be connected to the valve body and the pump. In addition, most of the fixing plate is screwed together, and sometimes it may not be installed properly, so that the water cannot be discharged completely.

In addition, the conventional power washer may be damaged by the impact of hydraulic pressure inlet of the pressure regulating valve, and the air intake in the inlet is often filled, stop the injection operation in the middle of the power loss, work is cumbersome and work efficiency is reduced It became. In addition, the 'T' type pressure intensifier caused air due to the sucked water and the water coming out of the drainage, so the driving device did not work properly.

To solve the above problems,

An object of the present invention is to install a pressure intensifier having a predetermined angle in the inlet to solve the difficulty of reaching the outlet and the outlet of the pressure control valve due to the air (Air) and help the injecting and main driving force during the injection To reduce the power dissipation of the drive.

Another object of the present invention is to increase the function of the pressure intensifier by entering the pressure intensifier without sending a high pressure discharge to the bucket when the discharge valve is installed by the discharge valve of the pressure control valve.

Still another object of the present invention is to assemble the pres- sure coupling with only two bolts without assembling the PT screw when assembling the pressure regulating valve to the power sprayer body, and having a predetermined groove between the pre-presence couplings so that the pressure automatic The valve body is rotated from side to side to prevent twisting of the hose for convenience in spraying, to improve work efficiency and to assemble only existing products. It is to simply design the assembly structure to be mounted on the.

1 is a perspective view of an automatic control valve of a conventional power sprayer.

2 is a block diagram illustrating the operation of the present invention.

3 shows an embodiment of an intensifier.

Figure 4 is an exploded view showing the coupling of the prezi coupling and the pressure control valve of the present invention.

* Description of the symbols for the main parts of the drawings *

200: power washer 210: pressure intensifier

212: sideways

220: suction port 230: pump

240: motor 245: water inlet

250 inlet

260: inlet chamber 270: bypass valve

275: discharge valve

280: outlet 285: discharge hose

290: discharge port 295: discharge hose

300: pressure regulating valve 302: pressure regulating valve lower

400: water bottle 310: prezi coupling

330,340: Bolt screw hole 360: Fixed step

350: fixed plate 355: hole

405: Main suction direction 370, 380: Bolt screw

410: suction pipe

In order to achieve the above object, the present invention relates to a power washer, and more particularly, to a power washer equipped with a pressure inlet inlet and a rotatable pressure control valve and a power washer equipped with a bypass valve in the outlet. .

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

2 is a block diagram illustrating the operation of the present invention.

Water entering the inlet 220 through the intensifier 210 in the water tank 400 is a piston in the pump 230 powered by the motor 240 through the water inlet 245 through the water inlet 245 of the pressure regulating valve 300 It is a power washer that enters the inlet chamber 260 through the inlet 250 and is connected to the outlet hose 285 of the outlet 280 over the outlet valve 270 to wash with the water discharged.

The power washer 200 includes an inlet 250 at the lower end of the pressure control valve 300 and an inlet chamber 260 and the outlet 290 and the outlet hose 295 and the outlet 280 and the outlet from the lower end to the upper end in the center. The hose 285 is formed.

Water introduced through the inlet 250 is sprayed through the discharge gun 500 through the discharge hose 285 of the outlet 280 through the discharge valve 270 in the inlet chamber 260.

The discharge port 290 is a high pressure discharge through the inlet chamber 260 through the inlet chamber 260 through the inlet 250, the discharge of the high pressure is equipped with a bypass valve 270 to the bucket The pump-side suction port 220 and the suction pipe 410 to which the suction hose is attached do not enter the main suction direction 405 and the pressure intensifier 210 having a sideway with a predetermined angle to discharge the pressurized form. To help with pressure and main driving force.

That is, the intensifier 210 boosts the water that is drawn into the high pressure through the bypass valve 270 and the water sucked by the piston pump, and pumps the pumping pressure of the pump 230 operated by the piston reciprocating motion. This prevents the inlet 250, the motor 240, and the pump 230 of the pressure regulating valve 300 from being damaged.

The pressure intensifier 210 forms a side to allow water entering the main suction direction 405 through the suction hose 410 and water discharged through the discharge hose 295 at a predetermined angle with the main suction direction in the bucket. One structure prevents the generation of air in the booster 410.

According to Bernoulli's law applied to water flowing through a pipe, the energy of water is reduced or enlarged when water flows into a pipe whose diameter is reduced (or expanded).

When the loss due to flow is ignored, the height from the reference plane is the position head (Z), the energy due to the static pressure of water is the pressure head (p / v_0), and the dynamic pressure energy according to the flow of the water is the velocity head (V_2 / 2g). These three sums are constant everywhere.

here

p: pressure at each point (kg / ㎡)

v_0: specific weight of water (1000kg / ㎥)

V: flow rate (m / s)

g: acceleration of gravity (9.8 m / s2)

Z: Height from the reference plane to the center of the pipe (m)

In a place where the flow of water is fast, the head of pressure increases, so the head of pressure decreases. On the contrary, in a place where the flow velocity is slow, the head of water decreases and the head of pressure increases. The pressure head is the magnitude of the static pressure and the magnitude of the velocity head is proportional to the square of the velocity.

That is, the water entering the intensifier 210 as two streams flows through the narrowed intensifier 210 tube, so that the speed is increased and the pressure is lowered. Therefore, by applying a pressure lowered in the intensifier 210, it allows to go to the outlet 280 and the discharge port 290 of the automatic control valve 300.

3 shows an embodiment of an intensifier,

When withdrawn from the outlet of the pressure regulating valve, a high pressure connects the discharge hose 295 with the side 212 of the booster 210 without sending the discharge to the bucket and the booster 210 is connected to the pump 230. It is mounted between the suction port 220 and the suction pipe 410 connected to the suction hose of the water tank 400 to perform the discharge of pressurized type to assist the main driving force that sucks water only by the operation of the pressure and the pump during injection. It reduces the power loss of the device.

Figure 4 is a perspective view showing the coupling of the prezi coupling and the pressure control valve.

The pressure regulating valve has a prezied coupling 310 that abuts the water inlet of the power scaler and secures the power washer body.

The prezied coupling 310 is mounted at the bottom 302 of the pressure regulating valve.

The precipit coupling 310 has a fixed step 350 which allows the fixing plate 350 having the hole 355 and the hole 355 to be rotated from side to side and enters the hole 355. It consists of.

The fixed step 360 is adapted to be engaged with the pressure regulating valve.

Existing products were manufactured to be mounted on a fixed plate using PT screws to mount the pressure regulating valve only on a specific product, but in the present invention, the prezi coupling 310 can be separated from the pressure regulating valve and made in a domestic refill. It can be mounted on all piston pumps and can be easily assembled and securely fixed to the water inlet 245 of the power washer body using two bolt screws (370, 380) to prevent water from draining properly. Prevent the phenomenon. It is convenient for work because the direction of pressure control valve can be adjusted before assembling.

Two bolts 370 and 380 are inserted into two bolt screw holes 330 and 340 at the edges of the prezi coupling 310 to engage the water supply port 245 of the body of the power washer to fix the pressure regulating valve.

The present invention is not limited to the washer and can be practiced by modifying its structure in a spray function such as a power sprayer for drug spraying.

The above embodiments are intended to illustrate the present invention and the scope of the present invention is not limited to the above-described embodiments and may be modified or modified by those skilled in the art within the scope of the present invention defined by the appended claims. . For example, the shape and structure of each component specifically shown in the embodiment of the present invention can be modified.

According to the present invention, the intensifier is connected to the water inlet through the suction pipe through the suction hose in the main suction direction and the water discharge hose of the discharge port equipped with the bypass so that the water discharged at a high pressure is at a predetermined angle from the main suction direction. It is equipped with a pressure intensifier designed to come in to prevent the formation of air in the pressure intensifier, and by pressurizing it, water can easily reach the pressure control valve to increase the pressure during spraying, thereby improving work efficiency. And the pump assists in the main driving force to suck water only by the pumping of the piston, thereby reducing the power loss of the drive.

In addition, it is possible to rotate left and right by installing a detachable precoupling coupling on the bottom of the pressure regulating valve body, so that the hose is prevented from bending or twisting when the pressure regulating valve body is connected to the hose when washing the car. The existing pressure regulating valve is manufactured to be fitted to all domestic piston pumps by manufacturing the prezi coupling and refill by blocking the closed end that can be assembled only to a specific product, and to be easily separated and assembled with the pressure regulating valve body. Since the parts can be purchased separately, the parts can be easily purchased.

Claims (2)

Pressure control valve that forms inlet chamber, discharge port and outlet port from the lower part to the upper part of the valve body and the lower part of the valve body, and the pump powered by the motor intakes the water from the water inlet by the piston action. In the power washer to wash with water discharged to A bypass valve mounted to the discharge port; A suction pipe connected to the suction hose from the bucket; And a pressure intensifier mounted between the suction pipe and the suction port and connected to the discharge hose of the discharge port through a bypass valve to form a path through which the discharge water is sucked at a predetermined angle with respect to the main suction direction. The method of claim 1, The pressure control valve is fixed to the power washer body by two bolt screws and a fixed plate having a hole in the center; Prezied coupling paired with the fixed plate and composed of a fixed step capable of rotating left and right is connected to the lower end of the pressure control valve to enable the left and right rotation of the pressure control valve is characterized in that it is manufactured to be separated from the body of the pressure control valve Power washer.