CN107597667B - Pressure cleaning machine - Google Patents

Abstract

A pressure washer has a frame, a motor, a pump, a hose, a spray gun, a nozzle at one end of the spray gun, a control device, and a removable, replaceable liquid reservoir. The liquid storage container is mounted to the frame and is used to store cleaning liquid used by the pressure washer. The liquid storage container comprises a liquid inlet with a sealing element and a one-way valve. The cleaning liquid is poured into or poured out of the liquid storage container through the liquid inlet. The one-way valve is used for controlling the communication state between the liquid storage container and the cleaning liquid inlet. The pressure cleaning machine of the invention enables an operator to easily disassemble and replace the cleaning liquid container by using the detachable cleaning liquid container; still through increasing injection apparatus and check valve, the operator of being convenient for selects the mode of pressure washer according to the degree of difficulty of getting rid of the spot, and convenient operation has prolonged the life of pressure washer.

Description

pressure washer

technical field

The invention relates to the field of machinery, in particular to a pressure washer with a detachable cleaning liquid container.

Background technique

As a cleaning device that can generate high-pressure water flow to wash the surface of objects, pressure washers are widely used in various fields of life and work, especially in outdoor courtyards, motor vehicle lanes and sidewalks with concrete structure surfaces, as well as in rails, fences, etc. It has a good cleaning effect in the cleaning process with hard surfaces such as cars or cars. In daily life, when using a pressure washer to clean the surface of a stained object, in order to ensure the cleaning effect, it is usually necessary to spray or apply detergent or other liquid chemical solvent on the surface of the stained object in advance or at the same time. Those skilled in the art have developed a pressure washer with a cleaning fluid container, in which detergent or chemical solvent is contained as cleaning fluid in the cleaning fluid container, and is sprayed on the pressure washer through hoses and spray bars on the pressure washer. The surface of the object makes the stains on the surface of the object dissolve and peel off quickly under the action of the cleaning liquid and the pressure of the water flow, which improves the cleaning effect of the pressure washer. Therefore, how to provide a pressure washer with a cleaning liquid container that is easy to install and use has become one of the focuses of pressure washer manufacturers' research.

In addition, when using the pressure washer in a colder climate, in order to prevent cracking and damage to the pump in the pressure washer caused by the freezing and expansion of the residual liquid in the pressure washer, use the pressure washer in a cold environment. Afterwards, the residual liquid remaining in the pressure washer needs to be cleaned up, that is, the pressure washer is subjected to antifreeze treatment. In the prior art, the antifreeze treatment method of the pressure washer is as follows: disconnect the water inlet and outlet hoses and spray rods connected to the pressure washer, and manually control the pressure washer to run for a short time (for example, 5 seconds), so that the residual water remains in the pressure washer. All the residual liquid in the pressure washer flows out, and then reconnects and installs the inlet and outlet hoses and spray bars to complete the antifreeze treatment of the pressure washer. However, this antifreeze treatment method is easily affected by human factors in the actual use process, and when the pressure washer runs for too long during the antifreeze treatment process, it is easy to cause damage to the pump in the pressure washer and affect the pressure. The service life of the cleaning machine.

In view of this, it is necessary to design an improved pressure washer to solve the above technical problems.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a pressure washer with a detachable cleaning fluid container.

In order to achieve the above objects, the present invention adopts the following technical solutions: a pressure washer, comprising a frame, a pump and an engine mounted on the frame, a hose connected to the pump, a spray gun connected to the hose, a A nozzle at one end of the spray gun and a cleaning fluid inlet, the pump includes a pump inlet and a pump outlet, the hose includes a hose inlet connected to the pump inlet and a hose outlet connected to the spray gun, the The spray gun includes a spray gun inlet connected to the hose inlet, the engine drives the pump to pressurize the liquid, and the liquid entering the pump flows through the hose, the spray gun and the nozzle in sequence; the The pressure washer also includes a removable, replaceable fluid storage container mounted to the frame and used to store cleaning fluid used by the pressure washer, the fluid storage container including a fluid inlet having a closure element port and a one-way valve, the cleaning liquid is poured into or out of the liquid storage container through the liquid inlet, and the one-way valve is used to control the communication state between the liquid storage container and the cleaning liquid inlet .

As a further improved technical solution of the present invention, the liquid inlet is located at the upper part of the liquid storage container, and the one-way valve is located at the lower part of the liquid storage container.

As a further improved technical solution of the present invention, the sealing element is a screw cap.

In order to achieve the above object, the present invention also adopts the following technical solutions: a pressure washer, comprising a frame, a pump and an engine connected to the frame, a hose connected to the pump, a spray gun connected to the hose, A nozzle at one end of the spray gun and a cleaning fluid inlet, the pump includes a pump inlet and a pump outlet, the hose includes a hose inlet connected to the pump outlet and a hose outlet connected to the spray gun, so The spray gun includes a spray gun inlet connected to the hose inlet, and the engine drives the pump to pressurize the liquid, so that the liquid entering the pump flows through the hose, the spray gun and the nozzle in sequence; The pressure washer also includes a liquid storage container detachably connected to the frame, the liquid storage container is used to store the cleaning liquid used by the pressure washer, and the liquid storage container includes a body and a spray device, The main body includes a liquid inlet with a one-way valve, the one-way valve is used to control the communication state between the liquid storage container and the cleaning liquid inlet, and the spray device is detachably connected to the main body .

As a further improved technical solution of the present invention, the liquid storage container further comprises a handle located at the lower part of the liquid storage container.

As a further improved technical solution of the present invention, the liquid inlet is located at the upper part of the body, and the handle is located at the lower part of the body.

As a further improved technical solution of the present invention, the spray device is connected with the main body through threads.

As a further improved technical solution of the present invention, the liquid storage container further includes a thin tube that communicates the spray device and the body, and the thin tube extends from the spray device to the interior of the body.

As a further improved technical solution of the present invention, the spray device is optionally attached to the cleaning liquid inlet.

As a further improved technical solution of the present invention, the spray device is selectively attached to a position of the body, and further the other position of the body includes a handle.

Compared with the prior art, the pressure washer of the present invention makes it easy for the operator to disassemble and replace the cleaning liquid container by using a detachable cleaning liquid container; and by adding a spray device and a one-way valve, it is convenient for the operator to remove stains according to the requirements. The degree of difficulty, select the working mode of the pressure washer, easy to operate, and prolong the service life of the pressure washer.

Description of drawings

FIG. 1 is a schematic view of the structure of the pressure washer of the present invention.

Fig. 2 is a structural block diagram of the pressure washer of the present invention.

FIG. 3 is a schematic structural diagram of the first embodiment of the present invention.

FIG. 4 is a schematic structural diagram of a second embodiment of the present invention.

Detailed ways

Referring to FIGS. 1 and 2 , the present invention discloses a pressure washer 10 . The pressure washer 10 includes a pump 12 , a hose 14 , a spray gun 16 and a nozzle 18 . The pump 12 has a pump inlet 12a for introducing the solution to be pressurized and a pump outlet 12b. In other embodiments, the pump 12 comprises a self-priming siphon pump. The hose 14 has a hose inlet 14a for containing fluid and communicated with the pump outlet 12b and a hose outlet 14b. The lance 16 has a lance inlet 16a for containing fluid and communicated with the hose outlet 14b and a lance outlet 16b. The nozzle 18 communicates with the lance outlet 16b and contains fluid therein. The pressure washer 10 also includes a motor 20 connected to the pump 12 that drives the pump 12 to pressurize liquid and direct the pressurized liquid through the hose 14 , gun 16 and nozzle 18 . The motor 20 shown in this embodiment is a DC brushless motor, but obviously, other types of motors are equally applicable to the present invention. The pressure washer 10 also includes a water source 22 and a power source 26 . The water source 22 is connected to the pump inlet 12a, the water source 22 is generally a hose (not shown) and can be connected to a water tap (not shown). The power source 26 is used to supply power to the motor 20, which can be either an AC power source or a DC power source. The pressure washer 10 further includes a control device 30 , which may be a printed circuit board electrically connected to the motor 20 . The control device 30 includes a first power switch 32 that is switchable between an "on" gear/position and an "off" gear/position for use during use of the pressure washer 10 The motor 20 is started or stopped in the middle. The control device 30 further includes a second antifreeze switch 34 ( FIG. 2 ), which can temporarily activate the motor 20 to remove the liquid in the pump 12 to protect the pressure washer 10 Safe winter. The use of the antifreeze switch 34 is particularly desirable when the pump 12 is a self-priming siphon pump. This antifreeze technical feature can be combined with any pressure washer that has a self-priming siphon pump. As is apparent from the options shown in FIG. 1, the power switch 32 and the antifreeze switch 34 shown in the block diagram of FIG. 2 may operate in different ways, as will be described below.

As an executable solution, the power switch 32 and the antifreeze switch 34 are integrated into a multi-position switch device, which may be a knob 36 ( FIG. 1 ). The knob 36 is rotatable or movable between an "on" ("open") position 36a, an "off" ("closed") position 36b, and a "winterizing" ("antifreeze") position 36c. When the knob 36 is in the anti-freeze switch position/gear 36c, a timer connected to the control device 30 will control the power supply to supply the motor 20 with power for a preset, short period of time (eg, 5 seconds) , and this antifreeze switch position 36c can also be defined as a "hold" position/gear. Alternatively, the power switch 32 is separately provided as a two-speed switch device 32', that is to say, the power switch 32' can be switched between the "on" position and the "off" position. In this case, the antifreeze switch 34 can be individually set as a button 34'. The switches mentioned above, as well as other alternative elements within the scope of the inventive concept, may be either mechanical switches or electronic switches, or a combination of mechanical and electronic switches.

In other embodiments, the antifreeze switch 34 may further comprise a momentary switch or a hold switch. When set as a hold switch, the control device 30 is further provided with a timing device, which cooperates with the hold switch. After the anti-freeze switch 34 is activated, the motor 20 only operates for a preset time period. run within. This arrangement prevents the motor 20 from running for too long, which can not only prevent the motor 20 from being damaged in winter, but also protect the motor 20 from being damaged during the anti-freezing process. When set as a momentary switch, the motor 20 is operated for that time period according to the time when the user operates the momentary switch. For example, if the momentary switch is a button, the motor 20 will only run when the user presses the button 34'. The control device 30 includes a suitable, programmable logic circuit, such as the aforementioned printed circuit board, which performs the aforementioned functions.

Before the pressure washer 10 is stored in winter, generally when the warm climate is about to end and the freezing temperature can be predicted, the pump 12 of the pressure washer 10 is subjected to a cleaning operation. At this time, the pump 12 often contains some residual liquid (eg, water or water mixed with cleaning liquid) in the process of using the pressure washer 10 . During a purge or antifreeze process, it is often necessary to activate the antifreeze switch 34 ( FIG. 2 ) to temporarily activate the motor 20 to operate the pump 12 and remove residual liquid from the pump 12 . As discussed above, the power switch 32 and the antifreeze switch 34 in FIG. 2 can be integrated into a multi-position switch device 36 as shown in FIG. 1 . When the multi-position switch device 36 is used, the step of activating the anti-freeze switch 34 (FIG. 2) includes the operation of moving the multi-position switch device 36 to the anti-freeze position 36c. After the antifreeze switch 34 is activated, the power supply supplies power to the motor 20 and operates the pump 12 to discharge the residual liquid out of the pump 12 . More preferably, any hose connections to the pump inlet 12a and the pump outlet 12b are completely disconnected during the purge/antifreeze process. The antifreeze position 36c may be a "momentary" switch position where the power remains powered when the user holds the knob 36 in the third (antifreeze) position 36c; resets back to "off" when the user releases the knob 36 At position 36b, the power supply stops supplying power. Alternatively, the freeze protection position 36c is a "hold" switch position, when in this position, the control device 30 maintains power to the motor 20 for only a short period of time, such as 5 seconds; Stop the motor 20 from running. As previously discussed, the purge/antifreeze operation may be accomplished by a switch 34' provided separately from the main body power switch 32'. In this case, it will be appreciated that the three-position switch 36 need not be used. Instead, when the power switch 32' is in the "off" position 32b', the independently provided antifreeze switch 34' will act as a hold switch or momentary switch to activate the motor 20 and run the pump for a short period of time 12 to drain the residual liquid out of the pump.

Referring to FIG. 3 , the pressure washer 10 further includes a frame 40 . The pump 12 and the engine 20 are mounted on the frame 40 . The pressure washer 10 also includes a cleaning fluid inlet 42 . In this embodiment, a removable and replaceable liquid storage container 50 is mounted on the frame 40 . The liquid storage container 50 is used to store the cleaning liquid used by the pressure washer 10 . The liquid storage container 50 includes a liquid inlet (not numbered) with a closure member 52 (eg, a screw cap). Cleaning fluid can be poured or poured out through this fluid inlet. The liquid storage container 50 is also provided with a one-way valve 56 at another position, so that it can selectively communicate with the cleaning liquid inlet 42 . In the embodiment shown, the liquid inlet with the sealing element 52 is provided in the upper part of the liquid storage container 50 , and the one-way valve 56 is provided in the lower part of the liquid storage container 50 . This arrangement is such that when the liquid storage container 50 needs to be mounted to or removed from the frame 40, only the one-way valve 56 needs to be mounted or removed from the frame 40. This can be easily achieved from the cleaning liquid inlet 42 . The cleaning fluid inlet 42 leads to a fluid line (not shown) which in turn connects the pump inlet 12a and the water source 22 , so that the cleaning fluid can be mixed with the water entering the pump 12 . When the liquid storage container 50 needs to be replaced with cleaning liquid and/or the residual liquid needs to be removed according to different reasons, the liquid storage container 50 only needs to be removed from the frame 40 . On the other hand, the liquid storage container 50 can also be left on the frame 40 when it needs to be refilled with cleaning liquid, and the closure element 52 can then simply be opened. When the liquid storage container 50 is removed from the frame 40, the one-way valve 56 should be closed to prevent liquid from spilling. The liquid storage container 50 may be of any desired shape or configuration.

Figure 4 illustrates another embodiment of the present invention. A pressure washer 60 includes a frame 62 and a cleaning fluid inlet 64 . As mentioned above, the pressure washer 60 has the pump 12, the engine 20 mounted on the frame 62, and the hose 14, the spray gun 16 and the nozzle 18 (FIG. 2), and the details of these components will not be repeated here. A removable and replaceable liquid storage container 70 is mounted on the frame 62 . The liquid storage container 70 is used to store the cleaning liquid used by the pressure washer 60 . The liquid storage container 70 includes a body (not numbered) and a spray device 80 . The body includes a liquid inlet 72 with a one-way valve 74 . The one-way valve 74 can selectively communicate with the cleaning fluid inlet 64 . The spray device 80 can be selectively installed anywhere on the liquid inlet 72 so that the user can spray the liquid (eg cleaning liquid) in the container directly from the container onto the surface to be rinsed. In an embodiment, the spray device 80 is connected to the liquid inlet 72 by, for example, a threaded connection. It should be noted that any other means of attachment may be used to attach the spray device 80 to the container 70 at the desired location, and the container 70 may be of any desired shape or shape. In different embodiments, the liquid inlet 72 may be disposed at the upper portion of the liquid storage container 70, and the liquid storage container 70 further includes a handle 82 disposed at the lower portion thereof. The entire liquid storage container 70 can be mounted upside down to the cleaning liquid inlet 64 . In this position, liquid can flow between the one-way valve 74 and the cleaning liquid inlet 64 , so that cleaning liquid is poured into the pressure washer 60 from the liquid storage container 70 . In this way, cleaning fluid is directed to a fluid line (not shown) of the pressure washer 60 and then to the pump inlet 12a, where it is mixed with water from the water source 22 (FIG. 2). In this way, the solution in the spray gun 16 and the nozzle 18 is a diluted cleaning solution. When the user wants to use the concentrated cleaning liquid in the liquid storage container 70 directly, the liquid storage container 70 can be removed from the frame, and the spray device 80 can be installed in an appropriate manner (eg, screw connection) to the liquid inlet 72 . At this point, the cleaning fluid (eg, detergent or other chemicals) can be directly applied to the problem stains using the cleaning fluid storage container 70 and the spraying device 80 . A conventional thin tube 86 may be installed between the spray device 80 and the liquid storage container 70 to draw cleaning liquid from the liquid storage container 70 . It should be noted that the spray device 80 can be selectively attached to any desired location of the liquid storage container 70 so that the user can spray the liquid directly from the container. One option is to connect the spray device 80 to the liquid inlet 72 . In other embodiments, the spray device 80 is optionally attached to other portions of the container 70, such as the upper portion of the container. The container further includes a handle.

It should be noted that the engine mentioned in this article can be either an electric-driven engine or a gasoline-powered engine.

The invention can not only solve the problem of protecting the pressure washer from being damaged under the condition of low temperature and deactivation, but also provide the user with a freeze-proof pressure washer that is convenient, quick, friendly in interface and easy to operate.

To sum up, the pressure washer of the present invention makes it easy for the operator to disassemble and replace the cleaning liquid container by using a detachable cleaning liquid container; and by adding the spray device and the one-way valve, it is convenient for the operator to The degree of difficulty in removing stains, the working mode of the pressure washer is selected, the operation is convenient, and the service life of the pressure washer is prolonged.

In addition, the above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. The understanding of this specification should be based on those skilled in the art, although the present specification has been carried out with reference to the above embodiments. Detailed description, however, those of ordinary skill in the art should understand that those skilled in the art can still modify or equivalently replace the present invention, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be It is encompassed within the scope of the claims of the present invention.

Claims (9)

1. A pressure washer comprising a frame, a pump and a motor mounted on the frame, a hose connected to the pump, a spray gun connected to the hose, a nozzle at one end of the spray gun, and a cleaning fluid an inlet, the pump includes a pump inlet and a pump outlet, the hose includes a hose inlet connected to the pump inlet and a hose outlet connected to the spray gun, the spray gun includes a hose inlet connected to the hose inlet At the inlet of the spray gun, the engine drives the pump to pressurize the liquid, so that the liquid entering the pump flows through the hose, the spray gun and the nozzle in sequence; it is characterized in that: the pressure washer further includes a Removable, replaceable liquid storage container mounted to the frame and used to store cleaning liquid used by the pressure washer, the liquid storage container including a liquid inlet with a closure element and a one-way valve , the cleaning liquid is poured into or out of the liquid storage container through the liquid inlet, and the one-way valve is used to control the communication state between the liquid storage container and the cleaning liquid inlet, and the liquid inlet is located at the upper part of the liquid storage container, and the one-way valve is located at the lower part of the liquid storage container; The pressure washer also includes a control device, the control device includes a power switch and an anti-freeze switch; the anti-freeze switch includes a momentary switch or a hold switch, when the anti-freeze switch is a hold switch, the control device is provided with a timing device, so the The timing device works cooperatively with the hold switch, and when the antifreeze switch is set as a momentary switch, the momentary switch is a button, and the motor will only run when the button is pressed; The power switch and the anti-freeze switch can also be integrated into a multi-position switch device. When the multi-position switch device is used, the step of activating the anti-freeze switch includes moving the multi-position switch device to an anti-freeze position. , when the anti-freeze position is a momentary switch position and the user keeps the knob in the anti-freeze position, the power supply remains powered; when the user releases the knob to reset back to the "off" position, the power supply stops; when the anti-freeze position is a hold switch position , and in this position, the control device only maintains power supply to the motor for a short period of time; after that, the motor is turned off or stopped. 2. The pressure washer according to claim 1, wherein the sealing element is a screw cap. 3. A pressure washer comprising a frame, a pump and a motor connected to the frame, a hose connected to the pump, a spray gun connected to the hose, a nozzle at one end of the spray gun, and a cleaning fluid an inlet, the pump includes a pump inlet and a pump outlet, the hose includes a hose inlet connected to the pump outlet and a hose outlet connected to the spray gun, the spray gun includes a hose inlet connected to the hose inlet At the inlet of the spray gun, the engine drives the pump to pressurize the liquid, so that the liquid entering the pump flows through the hose, the spray gun and the nozzle in sequence; it is characterized in that: the pressure washer further includes a A liquid storage container detachably connected to the frame, the liquid storage container is used for storing the cleaning liquid used by the pressure washer, the liquid storage container includes a body and a spray device, the body includes a single The liquid inlet of the valve, the liquid inlet is located on the upper part of the main body, the one-way valve is used to control the communication state between the liquid storage container and the cleaning liquid inlet, the spray device and the main body It is a detachable connection; The pressure washer also includes a control device, the control device includes a power switch and an anti-freeze switch; the anti-freeze switch includes a momentary switch or a hold switch, when the anti-freeze switch is a hold switch, the control device is provided with a timing device, so the The timing device works cooperatively with the hold switch, and when the antifreeze switch is set as a momentary switch, the momentary switch is a button, and the motor will only run when the button is pressed; The power switch and the anti-freeze switch can also be integrated into a multi-position switch device. When the multi-position switch device is used, the step of activating the anti-freeze switch includes moving the multi-position switch device to an anti-freeze position. , when the anti-freeze position is a momentary switch position and the user keeps the knob in the anti-freeze position, the power supply remains powered; when the user releases the knob to reset back to the "off" position, the power supply stops; when the anti-freeze position is a hold switch position , and in this position, the control device only maintains power supply to the motor for a short period of time; after that, the motor is turned off or stopped. 4. The pressure washer of claim 3, wherein the liquid storage container further comprises a handle located at a lower portion of the liquid storage container. 5. The pressure washer of claim 4, wherein the handle is located at the lower portion of the body. 6 . The pressure washer according to claim 5 , wherein the spray device is connected with the main body through threads. 7 . 7 . The pressure washer according to claim 6 , wherein the liquid storage container further comprises a thin tube connecting the spraying device and the main body, and the thin tube is directed from the spraying device to the main body. 8 . Internal extension. 8. The pressure washer of claim 3, wherein the spray device is selectively attachable to the cleaning fluid inlet. 9. The pressure washer of claim 3, wherein the spray device is selectively attached to one location on the body, and further the other location of the body includes a handle.

Images