High-pressure pump and cleaning machine

Abstract

The present invention relates to the technical field of high-pressure pumps. Disclosed are a high-pressure pump and a cleaning machine, solving the problem of single working modes of existing high-pressure pumps. The technical solution solving the problem is mainly a high-pressure pump. The high-pressure pump comprises a pump body; a liquid suction pipe is arranged in the pump body; the liquid suction pipe is connected to a water supply cavity, a water supply pipe, and a liquid supply pipe; both ends of the liquid suction pipe are respectively communicated with the water supply cavity and a water outlet of the pump body; a changeover valve is arranged in the pump body; a part of a cleaning medium in the water supply cavity is communicated with the liquid suction pipe by means of the changeover valve; and the water outlet of the pump body optionally matches nozzles having different internal diameters. By replacement with the nozzles having different internal diameters, the communication relations of the changeover valve, the water supply pipe, and the liquid supply pipe with the liquid suction pipe are changed, thereby implementing the switching of the working mode of the pump body. The present invention is mainly used for implementing the switching among various modes.

Description

High-pressure pump and cleaning machine

Technical field

[0001] The invention discloses a high-pressure pump and a cleaning machine, belonging to the technical field of high-pressure pumps. [Background Technology]

[0002] A high-pressure pump is a commonly used gardening tool. The flow rate of a high-pressure pump depends on the cross-sectional area, stroke and movement frequency of the plunger. When the three are determined, the flow rate upper limit is fixed, and the flow rate of the high-pressure pump cannot be increased. Some higher or farther locations cannot be effectively cleaned. For example, a three-cylinder plunger pump is disclosed in a Chinese utility model patent (CN201100464Y), including a pump body, a pump cover and a plunger. The pump cover is provided with a water outlet valve, a water inlet and a relief valve body. One end of the relief valve body is connected to a water outlet joint, and the water outlet joint is connected to a spray gun high-pressure pipe. When the switch on the spray gun is turned on, the plunger pump starts working, causing the water pressure to rise to the working pressure. The water in the pump body flows to the spray gun through the relief valve body and is sprayed through the spray gun. However, the upper limit of the flow rate sprayed by the spray gun in this patent is fixed, and the flow rate cannot be increased. Therefore, the cleaning range of the spray gun is limited. In addition, the spray gun in this patent has only one working mode, which cannot meet the user's various cleaning needs and will affect the user's cleaning efficiency.

[0003] [Summary of the invention]

[0004] The purpose of the present invention is to solve the problem of the single working mode of the existing high-pressure pump, and to this end provide a high-pressure pump and a cleaning machine that can achieve switching between multiple modes.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A high-pressure pump includes a pump body, a suction pipe is provided in the pump body, the suction pipe is connected to a water supply chamber, a water supply pipe and a liquid supply pipe, the two ends of the suction pipe are respectively connected to the water supply chamber and the water outlet of the pump body, a steering valve is provided in the pump body, part of the cleaning medium in the water supply chamber is connected to the suction pipe through the steering valve, and the water outlet of the pump body can be optionally equipped with nozzles of different calibers. By replacing nozzles of different calibers, the connection relationship between the steering valve, the water supply pipe and the liquid supply pipe and the suction pipe is changed, thereby realizing the switching of the working mode of the pump body.

[0007] The beneficial effects of the present invention are:

[0008] The pump body of the present invention is provided with a liquid suction pipe and a steering valve, the liquid suction pipe is connected with a water supply cavity, a water supply pipe and a liquid supply pipe, the water outlet of the pump body can be optionally equipped with a plurality of nozzles of different calibers, and the use of nozzles of different calibers will change the pressure value in the pump body, thereby making one or more of the steering valve, the water supply pipe or the liquid supply pipe connected to the liquid suction pipe, so that the pump body can realize a plurality of different working modes, thereby achieving different cleaning effects, saving the user the time of changing cleaning tools and improving the user's cleaning efficiency; in addition, the water supply pipe and the liquid supply pipe can provide different cleaning media, and the pump By switching different working modes, the water outlet can spray different cleaning media, so that the cleaning area can be cleaned more effectively and the cleaning effect can be improved; secondly, part of the cleaning medium in the water supply chamber flows to the suction pipe through the diverter valve, so that the water supply chamber can supply water to the suction pipe through two channels at the same time, which can greatly reduce the pressure loss of water flow during high-pressure operation; thirdly, when the water supply pipe is connected to the suction pipe, the water supply pipe and the water supply chamber supply water to the suction pipe at the same time, which can effectively increase the flow rate of the water outlet, so that the water flow can be sprayed to a higher and farther position, greatly expanding the cleaning range of the nozzle.

[0009] Preferably, the water supply chamber and the water supply pipe are connected.

[0010] Preferably, the pump body has a first direction pointing from the water supply chamber to the water outlet, and the suction pipe includes a plurality of Venturi throttle valves spliced ​​along the first direction. The Venturi throttle valves are each provided with a water hole passing through the Venturi throttle valve along the first direction, and the aperture of the water hole increases successively along the first direction.

[0011] Preferably, the outer circumference of the liquid suction pipe is provided with a plurality of liquid suction holes, each located between two adjacent water holes, and the diverter valve, water supply pipe, and liquid supply pipe are all connected to the liquid suction pipe through the liquid suction holes. With the aforementioned technical solution, when water flows through the water holes, suction is generated at the liquid suction holes, thereby drawing the cleaning medium provided by the diverter valve, water supply pipe, or liquid supply pipe into the liquid suction pipe.

[0012] Preferably, the suction hole includes a first suction hole and a second suction hole, the diverter valve and the water supply pipe are connected to the suction pipe through the first suction hole, and the supply pipe is connected to the suction pipe through the second suction hole. By adopting the above technical solution, the cleaning media of the water supply pipe and the liquid supply pipe enter the suction pipe through different suction holes, which can prevent the two from mixing before entering the suction pipe, thereby causing the cleaning media to be diluted in advance, and improving the cleaning ability of the liquid sprayed by the nozzle; in addition, the diverter valve and the water supply pipe are both connected to the suction pipe through the first suction hole, which can reduce the number of suction holes, reduce the length of the suction pipe and the difficulty of manufacturing, and also make the overall structure of the pump body more compact, which is conducive to reducing the volume of the pump body.

[0013] Preferably, the second suction hole is located downstream of the first suction hole.

[0014] Preferably, the pump body is provided with a water supply chamber for accommodating a liquid suction pipe. A first sealing ring is provided on the outer periphery of the liquid suction pipe, with the first and second liquid suction holes located on either side of the first sealing ring. With this technical solution, the first sealing ring separates the water supply pipe and the liquid supply pipe, preventing the two cleaning media from mixing before entering the liquid suction pipe. This results in premature dilution of the cleaning media and ensures that the sprayed liquid has a strong cleaning capability.

[0015] Preferably, the pump body includes a first working mode, a second working mode and a third working mode;

[0016] First working mode: the steering valve is connected to the liquid suction pipe, and part of the cleaning medium in the steering valve enters the liquid suction pipe through the liquid suction hole;

[0017] Second working mode: the water supply pipe is connected to the liquid suction pipe, and the cleaning medium in the water supply pipe enters the liquid suction pipe through the liquid suction hole;

[0018] The third working mode: the water supply pipe and the liquid supply pipe are connected to the liquid suction pipe at the same time, and the cleaning media in the water supply pipe and the liquid supply pipe enter the liquid suction pipe through the liquid suction hole.

[0019] By adopting the above-mentioned technical solution, in the first working mode, a part of the cleaning medium in the water supply chamber directly enters the suction tube through the end of the suction tube, and the other part flows to the suction tube water supply chamber through the diverter valve, and supplies water to the suction tube through two channels at the same time, which can greatly reduce the pressure loss of water flow during high-pressure operation; in the second working mode, the cleaning medium in the water supply pipe is mixed with the cleaning medium in the water supply chamber through the suction hole. With the supplement of the cleaning medium in the water supply pipe, the flow rate sprayed by the pump body can be greatly increased, thereby enabling the water flow to be sprayed to a higher and farther position, greatly expanding the cleaning range of the nozzle; in the third working mode, the liquid supply pipe can provide different cleaning media, so that the liquid sprayed by the nozzle has a better cleaning function and improves the cleaning effect.

[0020] Preferably, the steering valve includes a first one-way valve, a second one-way valve is provided between the water supply pipe and the suction pipe, and a third one-way valve is provided between the supply pipe and the suction pipe. By replacing nozzles of different calibers, the opening and closing of the first one-way valve, the second one-way valve and the third one-way valve are switched.

[0021] Preferably, the liquid supply pipe is connected to a liquid supply device for providing a cleaning medium, and the liquid supply pipe is provided with a pipe joint connected to the liquid supply device. Using the above technical solution, the liquid supply device can provide a sufficient amount of cleaning medium to the liquid infusion pipe, allowing the pump body to continuously spray liquid containing the cleaning medium, thereby improving the cleaning time of the pump body. In addition, the liquid supply device can be replaced through the pipe joint, which can facilitate the replacement of the cleaning medium. Users can promptly replace the cleaning medium that meets their cleaning needs, making it more convenient for users to use.

[0022] Preferably, the water outlet of the pump body is provided with an outlet pipe connected to a liquid suction pipe, and a second sealing ring is provided on the outer periphery of the liquid suction pipe, the second sealing ring being located at the end of the liquid suction pipe near the outlet pipe. The aforementioned technical solution can improve the sealing between the outlet pipe and the pump body, maintain the pressure within the pump body, and ensure that the water flow at the outlet pipe has a higher initial velocity, allowing it to spray farther and higher, thereby increasing the cleaning range.

[0023] The present invention also provides a cleaning machine, comprising a high-pressure pump and a nozzle, wherein the high-pressure pump is any one of the high-pressure pumps described above.

[0024] Other features and advantages of the present invention will be disclosed in detail in the following specific embodiments and drawings.

Brief Description of the Drawings

[0025] The present invention will be further described below with reference to the accompanying drawings:

[0026] FIG1 is a cross-sectional view of a high-pressure pump according to the present invention when a first one-way valve is opened;

[0027] FIG2 is a cross-sectional view of a high-pressure pump according to the present invention when the second one-way valve is opened;

[0028] FIG3 is a cross-sectional view of a high-pressure pump according to the present invention when the third one-way valve is closed;

[0029] FIG4 is a cross-sectional view of a high-pressure pump according to the present invention when the third one-way valve is opened;

[0030] FIG5 is a cross-sectional view of a liquid suction pipe in a high-pressure pump according to the present invention.

[0031] Figure numerals: 1 pump body, 11 water replenishment chamber, 12 water outlet pipe, 13 water supply chamber, 14 water supply pipe, 15 liquid supply pipe, 151 pipe joint, 2 liquid suction pipe, 201 first Venturi throttle valve, 202 second Venturi throttle valve, 203 third Venturi throttle valve, 21 water passage hole, 22 first liquid suction hole, 23 second liquid suction hole, 24 first sealing ring, 25 second sealing ring, 3 first one-way valve, 31 first valve core, 32 first elastic member, 34 steering valve, 341 water inlet hole, 342 water outlet hole, 4 second one-way valve, 41 second valve core, 42 second elastic member, 5 third one-way valve, 51 third valve core, 52 third elastic member, 6 first direction [Specific implementation method]

[0032] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. However, the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the implementation manner, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified with "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless expressly limited otherwise.

[0035] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0036] Example 1:

[0037] As shown in Figures 1 to 5, this embodiment shows a high-pressure pump, including a pump body 1, a suction pipe 2 is provided in the pump body 1, and the suction pipe 2 is connected to a water supply chamber 13, a water supply pipe 14 and a liquid supply pipe 15, and the two ends of the suction pipe 2 are respectively connected to the water supply chamber 13 and the water outlet of the pump body 1, the water supply chamber 13 and the water supply pipe 14 are connected, and the water supply chamber 13 and the water supply pipe 14 both provide water flow to the suction pipe 2, and the liquid supply pipe 15 provides a cleaning medium with a cleaning function for the suction pipe 2, and a diverter valve 34 is provided in the pump body 2, and part of the water flow in the water supply chamber 13 is connected to the suction pipe 2 through the diverter valve 34, and the water outlet of the pump body 1 can be optionally equipped with a plurality of nozzles of different calibers. By replacing the nozzles, the connection relationship between the diverter valve 34, the water supply pipe 14 and the liquid supply pipe 15 and the suction pipe 2 is changed, thereby realizing the switching of the working mode of the pump body 1.

[0038] As shown in Figure 1, the water outlet of the pump body 1 described in this embodiment is provided with a water outlet pipe 12 connected to the suction pipe 2, and the water outlet pipe 12 is connected to a high-pressure pipe, and the high-pressure pipe is connected to a high-pressure gun. The nozzle is installed on the high-pressure gun, and then the water flow in the pump body 1 is sprayed out. In addition, the suction pipe 2 described in this embodiment includes a water inlet end directly connected to the water supply chamber 13 and a water outlet end connected to the water outlet pipe 12. A water hole 21 is provided in the suction pipe 2 along the axial direction of the suction pipe 2. The water in the water supply chamber 13 enters the suction pipe 2 through the water inlet end and is sprayed out from the water outlet pipe 12.

[0039] As shown in FIG5 , the pump body 1 in this embodiment has a first direction 6 pointing from the water supply chamber 13 to the water outlet, and the liquid suction pipe 2 includes a first Venturi throttle valve 201, a second Venturi throttle valve 202, and a third Venturi throttle valve 203 spliced ​​together in the first direction 6. The first Venturi throttle valve 201, the second Venturi throttle valve 202, and the third Venturi throttle valve 203 are all provided with a water hole 21 passing through the Venturi throttle valve along the first direction 6. The aperture of the water hole 21 increases successively along the first direction. The side wall of the liquid suction pipe 2 is provided with a first liquid suction hole 22 and a second liquid suction hole 23 that are connected to the water flow hole 21. The first liquid suction hole 22 is located between the water flow holes 21 of the first Venturi throttle valve 201 and the second Venturi throttle valve 202. The diverter valve 34 and the water supply pipe 14 are connected to the liquid suction pipe 2 through the first liquid suction hole 22. The second liquid suction hole 23 is located between the water flow holes 21 of the second Venturi throttle valve 202 and the third Venturi throttle valve 203. The liquid supply pipe 15 is connected to the liquid suction pipe 2 through the second liquid suction hole 23. In this embodiment, the diverter valve 34 includes a first one-way valve 3, a second one-way valve 4 is provided between the water supply pipe 14 and the liquid suction pipe 2, and a third one-way valve 5 is provided between the liquid supply pipe 15 and the liquid suction pipe 2. By replacing nozzles of different calibers, the opening and closing of the first one-way valve 3, the second one-way valve 4, and the third one-way valve 5 are switched.

[0040] In this embodiment, the first suction hole 22 is connected to the water supply chamber 13 through the first one-way valve 3, and is connected to the water supply pipe 14 through the second one-way valve 4. The second suction hole 23 is connected to the liquid supply pipe 15 through the third one-way valve 5, and the second suction hole 23 is located downstream of the first suction hole 22. In this embodiment, the replenished water flow and the cleaning medium enter the suction pipe 2 through the first suction hole 22 and the second suction hole 23 respectively, which can prevent the cleaning medium from merging with the replenished water before entering the suction pipe 2, thereby causing the cleaning medium to be diluted in advance and improving the cleaning ability of the liquid sprayed by the nozzle. In addition, part of the water flow in the water supply chamber 13 and the water flow in the water supply pipe 14 enter the suction pipe 2 through the first suction hole 22, which can reduce the number of suction holes and the difficulty of manufacturing the suction pipe 2. At the same time, it can also make the overall structure of the pump body 1 more compact, which is conducive to reducing the volume of the pump body.

[0041] In order to prevent the cleaning medium provided by the liquid supply pipe 15 from directly mixing with the water flow provided by the water supply pipe 14, a first sealing ring 24 is provided on the outer periphery of the liquid pipe 2 in this embodiment. The connection between the water replenishment chamber 11 and the water supply pipe 14 and the connection between the water replenishment chamber 11 and the liquid supply pipe 15 are respectively located on both sides of the first sealing ring 24, and the first sealing ring 24 is located between the first liquid suction hole 22 and the second liquid suction hole 23. In order to improve the stability of the first sealing ring 24, a hole for accommodating the first sealing ring 24 is provided on the outer periphery of the liquid pipe 2 in this embodiment. An annular groove, the outer peripheral side of the first sealing ring 24 is exposed in the annular groove and has an interference fit with the inner wall of the pump body 1; in addition, in order to improve the sealing between the pump body 1 and the water outlet pipe 12, a second sealing ring 25 is further provided on the outer peripheral side of the suction pipe 2, and the second sealing ring 25 is located at the end of the suction pipe 2 close to the water outlet pipe 12; the second sealing ring 25 can improve the sealing between the water outlet pipe 12 and the pump body 1, maintain the pressure in the pump body 1, and make the water flow at the water outlet pipe 12 have a larger initial velocity, so that it can be sprayed to a farther and higher position, thereby increasing the cleaning range.

[0042] As shown in Figures 1 and 2, in this embodiment, the first one-way valve 3 includes a first valve core 31 and a first elastic member 32. The steering valve 34 is provided with a sealing cover. The first elastic member 32 is sleeved on the first valve core 31 and one end is against the sealing cover. The steering valve 34 is connected to the water replenishment chamber 11 through the water outlet 342. Under the action of the first elastic member 32, the first valve core 31 moves toward the water outlet 342 and blocks the water outlet 342, thereby isolating the steering valve 34 from the water replenishment chamber 11.

[0043] As shown in Figures 1 and 2, in this embodiment, the second one-way valve 4 is located in the water replenishment chamber 11. The second one-way valve 4 includes a second valve core 41 and a second elastic member 42. A fixed seat for fixing the second one-way valve 4 is provided in the water replenishment chamber 11. The second elastic member 42 is located between the second valve core 41 and the fixed seat. The second valve core 41 moves toward the water supply pipe 14 under the action of the second elastic member 42, and blocks the connection between the water replenishment chamber 11 and the water supply pipe 14, so that the water supply pipe 14 is isolated from the water replenishment chamber 11.

[0044] As shown in Figures 3 and 4, the liquid supply pipe 15 in this embodiment is connected to a liquid supply device for providing a cleaning medium. The liquid supply pipe 15 is provided with a pipe joint 151 connected to the liquid supply device. The third one-way valve 5 is located in the pipe joint 151. A limiting step is provided in the liquid supply pipe 15. The third one-way valve 5 includes a third valve core 51 and a third elastic member 52. The third elastic member 52 is sleeved on the third valve core 51 and abuts against the limiting step. A sealing member that seals with the third valve core 51 is provided in the pipe joint 151. The third valve core 51 moves toward the sealing member under the action of the third elastic member 52, that is, the third valve core 51 moves away from the liquid supply pipe 15. The third valve core 51 cooperates with the sealing member to separate the liquid supply pipe 15 from the water replenishment chamber 11. In addition, in this embodiment, the force required for the deformation of the second elastic member 42 is smaller than the force required for the deformation of the third elastic member 52, that is, when the pressure in the water replenishment chamber 11 is relatively small, the second one-way valve 4 opens before the third one-way valve 5, that is, the pressure difference required for the opening of the second one-way valve 4 is smaller than the pressure difference required for the opening of the third one-way valve 5. Therefore, when the liquid supply pipe 15 is connected to the liquid suction pipe 2, the water supply pipe 14 will also be connected to the liquid suction pipe 2, and thus when spraying the cleaning medium, the nozzle can also maintain a sufficiently large flow rate, further improving the cleaning effect.

[0045] In addition, the liquid supply device can provide a sufficient amount of cleaning medium to the liquid supply pipe 15, so that the pump body 1 can continuously spray water with cleaning medium, thereby improving the cleaning time of the pump body 1. In addition, the liquid supply device can be replaced through the pipe joint 151, which can facilitate the replacement of the cleaning medium. The user can replace the cleaning medium that meets the cleaning requirements in time, making it more convenient for the user to use.

[0046] Secondly, the replacement of the pipe joint 151 and the liquid supply pipe 15 is relatively simple. When the third one-way valve 5 fails, the pipe joint 151 can be directly replaced without opening the pump body 1 for replacement, making the maintenance and replacement of the third one-way valve 5 more convenient and simple, reducing damage to the pump body 1 due to maintenance and replacement.

[0047] The working principle of this embodiment is as follows:

[0048] When the pump body 1 is in use, the water in the water supply cavity 13 directly enters the liquid suction pipe 2 through the water inlet end of the liquid suction pipe 2, and then flows out of the pump body 1 along the water outlet pipe 12 of the liquid suction pipe 2;

[0049] As shown in Figures 1 and 3, the pump body 1 is in the first working mode. At this time, the water outlet pipe 12 of the pump body 1 is externally connected to the high-pressure nozzle. The pressure in the water replenishment chamber 11 of the pump body 1 is relatively high, and one end of the first valve core 31 is connected to the water replenishment chamber 11, and the other end of the first valve core 31 is connected to the outside of the pump body 1. Therefore, when the pressure difference between the pressure in the water replenishment chamber 11 and the external atmospheric pressure is greater than the force of the first elastic member 32, the first valve core 31 moves toward the side away from the water outlet hole 342 under the action of the pressure difference, thereby releasing the seal of the first one-way valve 3, so that the steering valve 34 is connected to the water replenishment chamber 11. 1 is connected; in addition, the pressure in the water replenishment chamber 11 is simultaneously greater than the pressure in the water supply pipe 14 and the liquid supply pipe 15, so the second one-way valve 4 and the third one-way valve 5 remain in a sealed state, and at the same time, part of the water flow in the water supply chamber 13 will enter the steering valve 34 through the water inlet hole 341, and flow into the water replenishment chamber 11 along the water outlet hole 342, and enter the water hole 21 of the suction pipe 2, replenishing the water flow to the suction pipe 2, realizing a high-pressure jet mode, in which the water supply chamber 13 supplies water to the suction pipe 2 through two channels at the same time, which can greatly reduce the pressure loss of the water flow during high-pressure operation.

[0050] As shown in Figures 2 and 3, the pump body 1 is in the second working mode. At this time, the water outlet pipe 12 of the pump body 1 is externally connected to the medium and low pressure nozzles, the pressure in the water replenishment chamber 11 is relatively small, and the pressure difference between the water replenishment chamber 11 and the external atmospheric pressure is smaller than the force of the first elastic member 32. Therefore, the first valve core 31 is sealed with the water outlet hole 342 under the action of the first elastic member 32, so that the water in the steering valve 34 cannot enter the water replenishment chamber 11. When the water outlet pipe 12 is externally connected to the medium and low pressure nozzles, the suction pipe 2 generates suction at the first suction hole 22 and the second suction hole 23, and the suction generated by the first suction hole 22 is greater than the force of the second elastic member 42. Therefore, the second valve core 41 moves toward the fixed seat under the action of the first suction hole 22, that is, the second valve core 41 moves away from the water supply pipe 14. At this time, the water supply pipe 14 is connected to the water replenishment chamber 11. At the same time, the suction force generated by the second suction hole 23 is smaller than the force of the third elastic member 53. Therefore, the third valve core 51 maintains a sealed fit with the sealing member under the action of the third elastic member 52, thereby keeping the liquid supply pipe 15 sealed. The cleaning medium in the liquid supply device cannot enter the water replenishment chamber 11, while the water flow in the water supply pipe 14 enters the water replenishment chamber 11 through the second one-way valve 4. Due to the Venturi tube effect, suction is generated at the first suction hole 22 and the water flow in the water replenishment chamber 11 is sucked into the water hole 21 of the suction pipe 2, replenishing the suction pipe 2 with water and merging it with the water flow provided by the water supply chamber 13. Due to the continued replenishment of the water flow in the water supply pipe 14, the flow rate sprayed by the pump body 1 can be greatly increased, thereby enabling the water flow to be sprayed to a higher and farther position, greatly expanding the cleaning range of the nozzle;

[0051] As shown in Figures 2 and 4, the pump body 1 is in the third working mode. At this time, the water outlet pipe 12 of the pump body 1 is externally connected to a low-pressure nozzle. At this time, the pressure difference between the water replenishment chamber 11 and the external atmospheric pressure is less than the force of the first elastic member 32. Therefore, the first valve core 31 is sealed with the water outlet hole 342 under the action of the first elastic member 32, so that the water in the steering valve 34 cannot enter the water replenishment chamber 11. At the same time, the suction pipe 2 generates suction at the first suction hole 22 and the second suction hole 23, and the suction generated by the first suction hole 22 is greater than the force of the second elastic member 42. Therefore, When the second valve core 41 is opened, the water replenishing chamber 11 is connected to the water supply pipe 14, and the suction force generated at the first suction hole 22 sucks the water flow in the water replenishing chamber 11 into the suction pipe 2; and the suction force generated by the second suction hole 23 is also greater than the force of the second elastic member 52, so the third valve core 51 is away from the sealing member under the action of the second suction hole 23, thereby releasing the seal of the third one-way valve 5, and the second suction hole 23 also generates suction and sucks the cleaning medium in the liquid supply pipe 15 into the suction pipe 2, so that the nozzle can spray out water with cleaning medium, thereby improving the cleaning effect of the water flow.

[0052] The pump body 1 in this embodiment can switch different working modes by connecting nozzles of different pressures or by changing the pressure of the nozzles, thereby achieving different cleaning effects, saving the user the time of replacing cleaning tools and improving the user's cleaning efficiency.

[0053] Example 2:

[0054] This embodiment shows a cleaning machine, including a high-pressure pump and a nozzle. The high-pressure pump includes a pump body 1, and the pump body 1 is provided with a liquid suction pipe 2. The end of the liquid suction pipe 2 is connected to a water outlet pipe 14. The water outlet pipe 12 is connected to a high-pressure pipe, and the high-pressure pipe is connected to a high-pressure gun. The nozzle is installed on the high-pressure gun. The high-pressure pump described in this embodiment adopts the high-pressure pump described in Example 1 or other identical embodiments.

[0055] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art will understand that the present invention includes, but is not limited to, the contents described in the drawings and the above specific embodiments. Any modifications that do not deviate from the functional and structural principles of the present invention are intended to be included within the scope of the claims.

Claims

1. A high-pressure pump, comprising a pump body, wherein a liquid suction pipe is provided in the pump body, the liquid suction pipe is connected to a water supply cavity, a water supply pipe and a liquid supply pipe, and the two ends of the liquid suction pipe are respectively connected to the water supply cavity and the water outlet of the pump body, characterized in that: A steering valve is provided in the pump body, and part of the cleaning medium in the water supply chamber is connected to the suction tube through the steering valve. The water outlet of the pump body can be optionally equipped with multiple nozzles of different calibers. The connection relationship between the steering valve, the water supply pipe and the liquid supply pipe and the suction tube can be changed by replacing the nozzles, thereby realizing the switching of the working mode of the pump body.

2. A high pressure pump according to claim 1, characterized in that: The water supply chamber is communicated with the water supply pipe.

3. A high pressure pump according to claim 1, characterized in that: The pump body has a first direction pointing from the water supply chamber to the water outlet, the suction pipe includes a plurality of Venturi throttle valves spliced ​​along the first direction, each of the Venturi throttle valves is provided with a water hole penetrating the Venturi throttle valve along the first direction, and the aperture of the water hole increases successively along the first direction.

4. A high pressure pump according to claim 3, characterized in that: A plurality of suction holes are arranged on the outer peripheral side of the suction pipe, and the suction holes are located between two adjacent water holes. The steering valve, the water supply pipe and the liquid supply pipe are all connected with the suction pipe through the suction holes.

5. A high pressure pump according to claim 4, characterized in that: The liquid suction hole comprises a first liquid suction hole and a second liquid suction hole, the steering valve and the water supply pipe are connected with the liquid suction pipe through the first liquid suction hole, and the liquid supply pipe is connected with the liquid suction pipe through the second liquid suction hole.

6. A high pressure pump according to claim 5, characterized in that: The second suction hole is located downstream of the first suction hole.

7. A high pressure pump according to claim 5, characterized in that: The pump body is provided with a water replenishing cavity for accommodating a liquid suction tube, a first sealing ring is provided on the outer peripheral side of the liquid suction tube, and the first liquid suction hole and the second liquid suction hole are respectively located on both sides of the first sealing ring.

8. A high pressure pump according to any one of claims 4 to 7, characterized in that: The pump body includes a first working mode, a second working mode and a third working mode; First working mode: the steering valve is connected to the liquid suction pipe, and part of the cleaning medium in the steering valve enters the liquid suction pipe through the liquid suction hole; Second working mode: the water supply pipe is connected to the liquid suction pipe, and the cleaning medium in the water supply pipe enters the liquid suction pipe through the liquid suction hole; The third working mode: the water supply pipe and the liquid supply pipe are connected to the liquid suction pipe at the same time, and the cleaning media in the water supply pipe and the liquid supply pipe enter the liquid suction pipe through the liquid suction hole.

9. A high pressure pump according to claim 1, characterized in that: The steering valve includes a first one-way valve, a second one-way valve is arranged between the water supply pipe and the liquid suction pipe, and a third one-way valve is arranged between the liquid supply pipe and the liquid suction pipe. By replacing nozzles of different calibers, the opening and closing of the first one-way valve, the second one-way valve and the third one-way valve are switched.

10. A high pressure pump according to claim 1, characterized in that: The liquid supply pipe is connected with a liquid supply device for providing cleaning medium, and the liquid supply pipe is provided with a pipe joint connected with the liquid supply device.

11. A high pressure pump according to claim 1, characterized in that: The water outlet of the pump body is provided with a water outlet pipe connected with a liquid suction pipe, and a second sealing ring is provided on the outer peripheral side of the liquid suction pipe. The second sealing ring is located at the end of the liquid suction pipe close to the water outlet pipe.

12. A cleaning machine, comprising a high pressure pump and a nozzle, characterized in that: The high-pressure pump is a high-pressure pump as claimed in any one of claims 1 to 11.

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