JP4018499B2 - Hot water cleaning method using cold / hot water switching jet type high pressure washer - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention has water and sewage pipes cleaning and various industrial equipment, to hot water washing method according to the apparatus and facilities cold draining conversion jet type high-pressure washing machine using the pressure pump to be used for cleaning, the burner unit The present invention relates to a hot water washing method using a cold / hot water switching jet type high-pressure washing machine in which hot water is produced using a pressure pump without being used.
[0002]
[Prior art]
Various structures of high-pressure washing machines used for washing water and sewage pipes and various industrial equipment and devices have been put to practical use. In particular, switching injection of cold and hot water is possible to increase washing efficiency. Many types of high-pressure washing machines of the type are used.
[0003]
Thus, each of the conventional cold / hot water switching injection type high pressure washer is provided with a burner device B (or an electric heater) and a fuel source F on the water suction side of the pressure pump P ₀ as shown in FIG. In the case of performing hot water radiation, the burner device B (or electric heater) is operated to supply hot water Wt heated to a predetermined temperature to the water supply side of the pressure pump P ₀ . In FIG. 6, E is a pump drive source such as an engine or motor, W is a water source such as an aquarium tank or a direct water pipe, V is a pressure regulating valve, Vp is a pressure regulator, VL is a relief valve, and D is spilled water. discharge ports, P is a pressure gauge, H is a high-pressure hose, N is the nozzle, V ₁ and V ₂ changeover valve, V ₃ is a main valve, V ₄ is followed by a hand valve is assembled together, the pressure regulating valve V is Is formed.
[0004]
At the time of cold water cleaning, V ₁ is opened, V ₂ is closed, the pressure pump P ₀ is operated, the water discharge pressure is adjusted by the pressure regulator Vp, and cold water Wc is injected from the nozzle N. Further, at the time of high temperature cleaning, V ₁ is closed, V ₂ is opened, the burner device B is operated, and hot water Wt heated to a predetermined temperature is injected. When the discharge pressure exceeds the adjustment pressure adjusted by the pressure regulator Vp, the relief valve VL is opened and the sewage water W ′ is returned to the water source W from the sewage discharge port D. In addition, since the said cold / hot water switching injection type high pressure washer itself is well-known, the detailed description is abbreviate | omitted here.
[0005]
[Problems to be solved by the invention]
The cold / hot water switching jet type high-pressure washing machine can greatly improve the washing efficiency by combining the use of hot water and a cleaning agent, and has an excellent practical effect.
However, it is necessary to attach (or prepare) the burner device B and the fuel source separately. In general, the oil burner and the oil tank are integrated into the main body of the washing machine, and these are loaded on a cart or the like. It is configured to be carried into the place of use. As a result, not only the washing machine main body is inevitably increased in size, but also there is a problem that it takes time to operate and maintain the burner device and the like.
Even when using electric power as a drive source, an electric heater is required as a heating source for cold water, and it is extremely difficult to reduce the size of the electric heater. There is a problem.
[0006]
The present invention has been made to resolve the previous in above-mentioned problems in the cleaning method using such cold draining conversion jet type high-pressure washer main purpose, to heat the cold water using a pressure pump P _O The present invention provides a hot water cleaning method using a cold / hot water switching injection type high-pressure washing machine that stores hot water formed by heating and injects the stored hot water.
[0007]
[Means for Solving the Problems]
The invention of claim 1 includes a plunger-type pressure pump P _O to the drive source E to the engine or the motor, the regulating valve V provided in the pressure pump P _O, provided water side of the pressurizing pump P _O The switching valve V ₁ and the switching valve V ₂ for switching the pump water intake to the cold water Wc or the hot water Wt, the main valve V ₃ provided on the discharge port side of the pressurizing pump _PO , and the relief valve VL forming the pressure regulating valve V and Oyobi pressure regulator Vp, while receiving reservoir hot water Wt from the pressure pump P _O is connected to Yomizu discharge port D, supply reservoir was heated Wt through the switching valve V ₂ to the water side of the pressurizing pump P _O to a hot water tank, a water source W for supplying cold water Wc through a switching valve V ₁ to the water supply side of the pressurizing pump P _O, said an injection nozzle N which is connected to the main valve V ₃ of the pressurizing pump discharge port First, the plunger-type pressurizing pump is used. The pump discharge pressure is set to its maximum value near the adjustment of Vp pressure regulator of providing a pressure regulating valve V to _O, then pressurizing the main valve V ₃ of the pump discharge opening in the open state of the closure and the switching valve V ₁ The pressure pump P _O is operated to supply a predetermined amount of hot water Wt at a predetermined temperature to the hot water tank from the residual water discharge port D of the relief valve VL of the pressure regulating valve V, and then the pressure pump P _O is stopped. The pressure regulator Vp is readjusted to a desired pressure, the switching valve V ₁ is closed, the main valve V ₃ and the switching valve V ₂ are opened, and the pressurizing pump P _O is restarted from the nozzle N. The basic configuration of the invention is to inject hot water of a predetermined pressure.
[0008]
The invention of claim 2 is the invention of claim 1, wherein the pressurizing pump P ₀ is an oilless plunger type high-pressure pressurizing pump and the discharge pressure of the pressurizing pump P ₀ is 50 to 2000 kg / cm. ² G, the hot water temperature is 40 to 90 ° C., and the hot water discharge rate is 1 to 10 l / min.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram of a method for producing hot water using a pressure pump according to the present invention. In FIG. 1, P ₀ is a pressure pump, E is a drive source, W is a water source, and Vp is a pressure regulating valve V. formed to pressure regulator, VL relief valve forming a pressure regulating valve V is, V ₃ is a source valve of the pump discharge opening, D is extra water discharge port, Tw is the hot water tank.
[0012]
As the pressurizing pump P ₀ , a high-pressure pump constituted by connecting three or four oilless plunger type pressurizing pumps having basic configurations as shown in FIGS. 2 and 3 in parallel is used. In this embodiment, an HC-500 plunger type high pressure pressurizing pump (discharge pressure 500 kg / cm ² , flow rate 900 l / H, 10 kW) manufactured by Kyowa Co., Ltd. is used.
That is, the pressurizing pump P ₀ is configured by connecting four oilless plunger pumps configured as shown in FIGS. 2 and 3 in parallel. When the motor drive shaft 1 is rotated, the eccentric disk is rotated. The plunger 4 reciprocates in the left-right direction via 2 and the bearing 3 fixed thereto. When the plunger 4 reciprocates, the water intake valve 5 and the drain valve 6 are alternately opened and closed, and water absorption from the water intake port 7 and discharge of pressurized water from the discharge port 8 are performed. 2 and 3, M is a motor case, V is a pressure regulating valve, Vp is a pressure regulator that forms the pressure regulating valve V, VL is a relief valve that forms the pressure regulating valve V, and D is a residual water discharge port. is there.
[0013]
Further, as shown in FIG. 4, the pressure regulating valve V is formed by combining a relief valve VL and a pressure regulator Vp. When the valve body 9 rises by overcoming the elastic force of the spring 10 by water pressure, the relief valve V VL is opened and hot water Wt is discharged from the residual water discharge port D.
In the present embodiment, the type of pressure regulating valve V in which the pressure regulator Vp and the relief valve VL are integrated is used, but it goes without saying that both may be separated.
The oilless plunger pump P ₀ and the pressure regulating valve V are known and disclosed in, for example, Japanese Utility Model Application Nos. 55-161964 and 55-161964. Therefore, although detailed explanation is omitted here, it is needless to say that any type and kind can be used.
[0014]
Referring to FIG. 1, when producing warm water, first, a warm water tank Tw is appropriately provided, and a sewage discharge port D of the pressure regulating valve V and the warm water tank Tw are connected by a hose.
Next, the drive source E (for example, the engine device) is operated to operate the pump P ₀ , the main valve V ₃ is closed, and the pressure regulator Vp is set to the maximum pressure value.
As a result, the sucked cold water Wc is pressurized and heated by the pump P ₀ , and becomes hot water Wt and injected into the hot water tank Tw.
[0015]
In the case of the present embodiment, a high-pressure oilless plunger pump (HC-500 type plunger pressure pump, 500 kg / cm ² , 10 kw, 900 l / min manufactured by Kyowa Co., Ltd.) is used, and the discharge pressure is adjusted to the pressure regulator Vp. To 500 kg / cm ² . When the main valve V ₃ was fully closed and the pressure pump P ₀ was continuously operated, hot water Wt of 48 ° C. could be continuously obtained at a flow rate of about 3 l / min even if the temperature of the cold water Wc was 30 ° C. .
That is, hot water of about 48 ° C. could be obtained continuously with only the pressurizing pump P ₀ without using a special burner pressurizing device.
[0016]
As the pressurizing pump P ₀ , use of an oilless plunger pump is optimal, the discharge pressure is 50 to 2000 kg / cm ² G, the hot water temperature is 40 ° C. to 90 ° C., and the hot water production amount is 1 to 1. It is optimal to be about 10 l / min from the viewpoints of the weight and size of the washing machine described later, transportation, and the like.
[0017]
Referring to FIG. 4, the cold / hot water switching injection type high pressure washer according to the present invention is an oilless plunger type high pressure pressurizing pump P ₀ having a drive source (engine device or motor device) E and a pressure regulating valve V. , A hot water tank Tw, a main valve V ₃ , a cold water / hot water switching valve V ₁ , V ₂ on the water intake side, a water source W, a high pressure hose H, a hand valve V ₄ , an injection nozzle N, and the like. The constituent members are the same as those shown in FIG. 1 and are all known ones, so that detailed explanations are omitted.
[0018]
In the operation of the cold / hot water switching injection type high pressure washer, first, the main valve V ₃ and the switching valve V ₂ are closed, the switching valve V ₁ is opened, the pump P ₀ is operated, and the pressure regulator Vp is set to the maximum pressure. adjust. As a result, the warm water Wt heated to a predetermined temperature (about 50 ° C.) flows out from the residual water discharge port D (about 3 to 5 l / min) and is stored in the warm water tank Tw (thermal insulation type).
[0019]
When a predetermined amount of hot water Wt is stored in the hot water tank Tw, the switching valve V ₁ is closed, the switching valve V ₂ is opened, the main valve V ₃ is opened, and the pressure regulator Vp is readjusted to a predetermined pressure. The hand valve V ₄ is opened, the hot water Wt having a predetermined pressure is sprayed from the nozzle N, and the object to be cleaned (not shown) is washed with the hot water Wt.
If necessary, the switching valve V ₁ is opened, the switching valve V ₂ is closed, cold water Wc is absorbed, and cold water Wc having a predetermined pressure is injected from the nozzle N to perform cold water cleaning.
[0020]
In the present invention, the above hot water storage, hot water washing and cold water washing are combined and operated in appropriate cycles, so that the hot and cold water can be switched only by the pressurizing pump P ₀ and its drive source without providing a burner device or the like. Cleaning can be performed.
[0021]
【The invention's effect】
Since the present method is at the present invention has a configuration to increase the cold water using a compression energy applied to the cold water pressure pump within P ₀ to a predetermined temperature, the driving source of the pressure pump P ₀ as previously It is not necessary to provide a heating device for cold water separately from E, and the size of the device can be reduced, the manufacturing cost can be reduced, and maintenance management and transportation operation can be simplified.
[0022]
This is the same in the cold / hot water switching injection type high-pressure washing machine according to the present invention. Just by providing the hot water tank Tw separately, the hot water Wt is produced by the pressurizing pump P ₀ and washed by the hot water Wt. The cleaning with the cold water Wc can be arbitrarily selected, and the cleaning machine can be greatly downsized and the manufacturing cost can be reduced.
The present invention has excellent practical utility as described above.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a method for producing hot water according to the present invention.
FIG. 2 is a front view showing a basic type of a pressurizing pump.
FIG. 3 is a cross-sectional view showing a basic type of a pressurizing pump.
FIG. 4 is a schematic cross-sectional view of a pressure regulating valve.
FIG. 5 is a block diagram of a cold / hot water switching jet type high pressure washer according to the present invention.
FIG. 6 is a block configuration diagram of a conventional cold / hot water switching injection type high pressure washer.
[Explanation of symbols]
P ₀ is a pressure pump, E is a pump drive source, B is a burner device, F is a fuel source, W is a water source, Tw is hot water tank, Wc is cold water, Wt is hot water, M is a motor case, V is a pressure regulating valve , Vp is a pressure regulator, VL is a relief valve, D is a waste water discharge port, H is a high pressure hose, N is a nozzle, V ₁ is a cold water switching valve, V ₂ is a hot water switching valve, V ₃ is a hand valve (pump discharge port) the main valve), V ₄ nozzles hand valve, 1 motor drive shaft, 2 is eccentric disc, 3 bearing, 4 is the plunger, 5 water valve, 6 drain valve, 7 water inlet, 8 ejection An outlet, 9 is a valve body of a relief valve, 10 is a spring, and 11 is a pressure adjusting handle.

Claims (2)

A plunger-type pressure pump P _O to the engine or motor as a driving source E, a pressure regulating valve V provided in the pressure pump P _O, provided water side of the pressurizing pump P _O, the pump water cold water Wc or A switching valve V ₁ and a switching valve V ₂ for switching to the hot water Wt, a main valve V ₃ provided on the discharge port side of the pressurizing pump _PO , a relief valve VL and a pressure regulator Vp forming the pressure regulating valve V, while receiving reservoir hot water Wt of being connected to the water discharge port D from the pressure pump P _O, and hot water tank for supplying the reservoir with hot water Wt through the switching valve V ₂ to the water side of the pressurizing pump P _O, cold water Wc a water source W to supply through a switching valve V ₁ to the water supply side of the pressurizing pump P _O, the pressurizing pump discharge port cold draining conversion injection type that includes a concatenated injection nozzle N to the main valve V ₃ of using a high-pressure washer, firstly, the pressure regulating valve provided in said plunger-type pressure pump P _O The pump discharge pressure by adjusting the pressure regulator Vp of set to its maximum value near then operating the pressurizing pump P _O with opened closure and the switching valve V ₁ the main valve V ₃ of the pump discharge port Then, a predetermined amount of hot water Wt having a predetermined temperature is supplied to the hot water tank from the residual water discharge port D of the relief valve VL of the pressure adjusting valve V, and then the pressurizing pump _PO is stopped and the pressure regulator Vp is turned on. while re-adjusted to a desired pressure, closing and and a switching valve V ₂ main valve V ₃ is opened, inject hot water at a predetermined pressure from a nozzle N by restarting the pressurizing pump P _O of the switching valve V ₁ A hot water cleaning method using a cold / hot water switching jet type high pressure washer. The pressure pump P _O is an oilless plunger type high-pressure pressurization pump, the discharge pressure of the pressure pump P _O is 50 to 2000 kg / cm ² G, the hot water temperature is 40 to 90 ° C., and the hot water discharge amount is 1. The hot / cold water washing method by the cold / hot water switching type injection type high-pressure washing machine according to claim 1, wherein the hot water washing method is set to −101 / min.

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