A reciprocating high pressure washer

Abstract

The utility model relates to a kind of reciprocating high-pressure cleaning machine, including pump body and motor with pump body, the pump body has water suction cavity, piston cavity and two high-pressure cavities, the water suction cavity is equipped with water inlet and two first water outlet holes;The piston cavity is slidably connected with piston and is separated into two piston chambers by piston;Every the high-pressure cavity with one the first water outlet hole and one the piston chamber are communicated;The first water outlet hole and the communication of corresponding high-pressure cavity are equipped with the first check valve allowing water flow from water suction cavity to high-pressure cavity;Second water outlet hole is equipped on each high-pressure cavity, and the second water outlet hole is equipped with the second check valve allowing water flow from high-pressure cavity to discharge outward.

Description

Technical Field

[0001] This utility model relates to the field of cleaning equipment, and in particular to a reciprocating high-pressure cleaner. Background Technology

[0002] Reciprocating high-pressure washers, as a common cleaning device, rely on a high-pressure pump to pressurize ordinary water flow into a high-pressure jet. Currently, most mainstream high-pressure washer pumps on the market employ a crank-connecting rod mechanism or a swashplate mechanism to convert the rotational motion of the motor into the reciprocating linear motion of the piston. For example, Chinese patent CN214196572U discloses a dual-plunger pump structure for a handheld high-pressure washer, which uses a gear set to drive two eccentric shafts to drive two plungers in reciprocating motion.

[0003] Although this structure can achieve high voltage output, it still has the following inherent defects:

[0004] First, the complex structure and numerous parts: The transmission mechanism includes gears, multiple shafts, and other components, resulting in a bulky pump body structure that hinders miniaturization and weight reduction, particularly limiting the development of handheld devices. Second, high manufacturing costs and low assembly efficiency: Numerous parts mean higher material costs and more complex assembly processes, increasing production costs. Third, long transmission chains and significant mechanical efficiency losses: Power is transmitted through multiple stages of transmission components, inevitably resulting in friction and energy loss, reducing overall efficiency. Finally, rapid wear and high noise: The numerous sliding friction pairs are prone to wear after prolonged use, leading to performance degradation and relatively high operating noise. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a reciprocating high-pressure cleaner that is not only more compact in structure and has higher transmission efficiency, but also has the advantages of low energy consumption, stable operation, low wear, long service life and low noise.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A reciprocating high-pressure washer includes a pump body and a motor connected to the pump body. The pump body has a suction chamber, a piston chamber, and two high-pressure chambers. The suction chamber is provided with a water inlet and two first water outlets. A piston is slidably connected in the piston chamber and is divided into two piston chambers by the piston. Each high-pressure chamber communicates with one of the first water outlets and one of the piston chambers. A first one-way valve is provided at the connection between the first water outlet and the corresponding high-pressure chamber to allow water to flow from the suction chamber to the high-pressure chamber. Each high-pressure chamber is provided with a second water outlet, and a second one-way valve is provided at the second water outlet to allow water to be discharged from the high-pressure chamber. An eccentric sleeve is fixedly connected to the output end of the motor and is offset parallel to its axis. The piston is provided with a drive groove, and the eccentric sleeve is rotatably accommodated in the drive groove and its outer periphery contacts the two transverse groove walls of the drive groove.

[0008] Furthermore, a roller is rotatably connected to the outer end of the eccentric sleeve, and the outer circumference of the roller is in rolling connection with the two transverse groove walls of the drive groove.

[0009] Furthermore, the pump body includes a pump body and a water inlet connector connected to the pump body. The pump body is provided with a first cylindrical hole that extends through it in the front-to-back direction. The first cylindrical hole is a water suction chamber and communicates with the water inlet connector. The two first water outlet holes are located at the two ends of the first cylindrical hole, respectively.

[0010] Furthermore, the pump body is also provided with a second cylindrical hole that runs through its front and rear directions, and two second one-way valves are installed in the second cylindrical hole. The two second one-way valves divide the second cylindrical hole into two high-pressure chambers located at both ends and a confluence area located between the two high-pressure chambers. The pump body also includes a water outlet connector, which is connected to the confluence area.

[0011] Furthermore, the pump body is also provided with a third cylindrical hole that extends through it in the front-rear direction, and the third cylindrical hole constitutes the piston chamber; the pump body is also provided with a mounting hole that communicates with the side wall of the third cylindrical hole, for the roller to extend into the piston chamber.

[0012] Furthermore, the pump body also includes two end caps that cover the front and rear ends of the pump body. Each end cap has a three-way chamber on the side facing the pump body that communicates with the corresponding first water outlet, the second cylindrical hole end, and the piston chamber.

[0013] Furthermore, each end cap is also provided with an overflow hole, which is connected to the corresponding three-way chamber, and the overflow hole is provided with an overflow valve.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] First, the structure is more compact: By directly fixing the eccentric sleeve to the motor output end and engaging it with the drive groove on the piston, the complex intermediate transmission mechanisms such as the traditional crankshaft, connecting rod, and gear set are completely eliminated. This design significantly reduces the number of parts in the machine, greatly lowering manufacturing costs and simplifying assembly processes. It also provides a fundamental solution for the miniaturization and weight reduction of cleaning machines (especially handheld models).

[0016] Secondly, it boasts high transmission efficiency and low energy consumption: Due to its extremely short transmission chain, power is directly transferred from the motor to the piston through the eccentric sleeve and drive groove, reducing frictional losses caused by multi-stage transmission. This makes energy transfer more direct and efficient, effectively improving the overall machine efficiency and reducing power consumption at the same output power.

[0017] Third, it offers excellent operational stability, minimal wear, and a long service life: By installing rollers at the outer end of the eccentric sleeve, the sliding friction of key transmission pairs is transformed into rolling friction, significantly reducing operating resistance and wear. This not only makes the equipment run more smoothly and with lower noise, but also greatly extends the service life of core moving parts, improving the reliability and durability of the product.

[0018] Fourth, the flow channel design is compact: by designing the suction chamber, high pressure chamber and piston chamber as three parallel cylindrical holes inside the pump body, and using the three-way chamber on the end cover to achieve the flow channel convergence, the flow channel layout is both compact and smooth, effectively reducing pressure loss and flow channel space occupation, and ensuring stable output of high pressure water; at the same time, it further simplifies the pump body structure. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of a reciprocating high-pressure cleaner according to the present invention.

[0020] Figure 2 yes Figure 1 The right view.

[0021] Figure 3 yes Figure 2 Sectional view at AA.

[0022] Figure 4 yes Figure 1 The main view.

[0023] Figure 5 yes Figure 4 Sectional view at AA.

[0024] Figure 6 This is a three-dimensional schematic diagram of the pump body in this utility model.

[0025] Figure 7 This is a three-dimensional schematic diagram of the end cap of this utility model.

[0026] Figure 8 This is a three-dimensional schematic diagram of the piston in this utility model. Detailed Implementation

[0027] The present invention will be further described in detail below with reference to the embodiments shown in the accompanying drawings.

[0028] like Figures 1 to 8 As shown in the embodiment of this utility model, a reciprocating high-pressure washer includes a pump body 1 and a motor 2 connected to the pump body 1. The pump body 1 has a water suction chamber 111, a piston chamber 112, and two high-pressure chambers 113. The water suction chamber 111 is provided with a water inlet and two first water outlets 114. A piston 12 is slidably connected in the piston chamber 112 and is divided into two piston chambers by the piston 12. The piston 12 has grooves at both ends. The two piston chambers are a front piston chamber 1121 and a rear piston chamber 1122, respectively. Each high-pressure chamber 113 is connected to a first water outlet 114 and a motor 2. The piston chambers are interconnected; a first one-way valve 3 is provided at the connection between the first water outlet 114 and the corresponding high-pressure chamber 113, allowing water to flow from the suction chamber 111 to the high-pressure chamber 113; each high-pressure chamber 113 is provided with a second water outlet 115, and a second one-way valve 4 is provided at the second water outlet 115, allowing water to flow out of the high-pressure chamber 113; the output end of the motor 2 is fixedly connected to an eccentric sleeve 21 that is parallel and offset to its axis, the piston 12 is provided with a drive groove 121, the eccentric sleeve 21 is rotatably accommodated in the drive groove 121 and its outer periphery is in contact with the two transverse groove walls of the drive groove 121.

[0029] As described above, a roller 22 is rotatably connected to the outer end of the eccentric sleeve 21, and the outer periphery of the roller 22 is in rolling connection with the two transverse groove walls of the drive groove 121.

[0030] As described above, the pump body 1 includes a pump body 11 and a water inlet connector 13 connected to the pump body 11. The pump body 11 is provided with a first cylindrical hole 11a that runs through it in the front-back direction. The first cylindrical hole 11a is a water suction chamber 111 and communicates with the water inlet connector 13. Two first water outlet holes 114 are located at the two ends of the first cylindrical hole 11a, respectively.

[0031] As described above, the pump body 11 is also provided with a second cylindrical hole 11b extending through its front and rear directions. Two second check valves 4 are installed in the second cylindrical hole 11b. The two second check valves 4 divide the second cylindrical hole 11b into two high-pressure chambers 113 located at both ends and a confluence area 116 located between the two high-pressure chambers 113. The pump body 1 also includes a water outlet connector 14, which is connected to the confluence area 116. The water outlet connector 14 is connected to a nozzle 15.

[0032] As described above, the pump body 11 is also provided with a third cylindrical hole 11c that extends through it in the front-rear direction, and the third cylindrical hole 11c constitutes the piston chamber 112; the pump body 11 is also provided with a mounting hole 117 that communicates with the side wall of the third cylindrical hole 11c, for the roller 22 to extend into the piston chamber 112.

[0033] As described above, the pump body 1 also includes two end caps 16 covering the front and rear ends of the pump body 11. Each end cap 16 has a three-way chamber 161 on the side facing the pump body 11 that communicates with the corresponding first water outlet 114, the end of the second cylindrical hole 11b and the piston chamber.

[0034] As described above, each end cap 16 is also provided with an overflow hole 162, which is connected to the corresponding three-way chamber 161, and the overflow hole 162 is provided with an overflow valve 5.

[0035] The working principle of this cleaning machine is as follows:

[0036] The water inlet connector 13 is connected to the water source through a water pipe, and the motor 2 is started. The output shaft of the motor 2 drives the piston 12 to slide in the front and back direction through the eccentric sleeve 21 and the drive groove 121.

[0037] When piston 12 slides towards the front piston chamber 1121, the volume of the rear piston chamber 1122 increases, creating a negative pressure. At this time, the first one-way valve 3 at the corresponding first water outlet 114 opens, and the water in the suction chamber 111 flows sequentially through this first water outlet 114 and the high-pressure chamber 113, and is drawn into the rear piston chamber 1122. Simultaneously, the volume of the front piston chamber 1121 decreases, the water is compressed, and the pressure increases. At this moment, the first one-way valve 3 at the corresponding first water outlet 114 of the front piston chamber 1121 closes to prevent water from flowing back into the suction chamber 111, and the second one-way valve 4 at the corresponding second water outlet 115 of the front piston chamber 1121 opens. High-pressure water flows from the front piston chamber 1121 through the high-pressure chamber 113 and the second water outlet 115, and finally forms a high-pressure jet through the water outlet connector 14 and the nozzle 15.

[0038] When piston 12 slides towards the rear piston chamber 1122, the working process is exactly the opposite: the volume of the front piston chamber 1121 increases and it draws in water. The volume of the rear piston chamber 1122 decreases, it compresses and discharges high-pressure water.

[0039] The above description is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Any simple equivalent changes and modifications made in accordance with the scope of the present utility model patent application and the description of the utility model shall still fall within the scope of the present utility model patent.

Claims

1. A reciprocating high-pressure washer, comprising a pump body and a motor connected to the pump body, wherein the pump body has a suction chamber, a piston chamber, and two high-pressure chambers, characterized in that: The water suction chamber is provided with a water inlet and two first water outlets; a piston is slidably connected in the piston chamber and is divided into two piston chambers by the piston; each high-pressure chamber is connected to one of the first water outlets and one of the piston chambers; a first one-way valve is provided at the connection between the first water outlet and the corresponding high-pressure chamber to allow water to flow from the water suction chamber to the high-pressure chamber; each high-pressure chamber is provided with a second water outlet, and a second one-way valve is provided at the second water outlet to allow water to be discharged from the high-pressure chamber; an eccentric sleeve is fixedly connected to the motor output end and is offset parallel to its axis; the piston is provided with a drive groove, and the eccentric sleeve is rotatably accommodated in the drive groove and its outer periphery is in contact with the two transverse groove walls of the drive groove.

2. The reciprocating high-pressure washer according to claim 1, characterized in that: The outer end of the eccentric sleeve is rotatably connected to a roller, and the outer circumference of the roller is in rolling connection with the two transverse groove walls of the drive groove.

3. The reciprocating high-pressure washer according to claim 2, characterized in that: The pump body includes a pump body and a water inlet connector connected to the pump body. The pump body is provided with a first cylindrical hole that runs through it in the front-to-back direction. The first cylindrical hole is a water suction chamber and communicates with the water inlet connector. The two first water outlet holes are located at the two ends of the first cylindrical hole, respectively.

4. The reciprocating high-pressure washer according to claim 3, characterized in that: The pump body is also provided with a second cylindrical hole that runs through its front and rear directions. Two second one-way valves are installed in the second cylindrical hole. The two second one-way valves divide the second cylindrical hole into two high-pressure chambers located at both ends and a confluence area located between the two high-pressure chambers. The pump body also includes a water outlet connector, which is connected to the confluence area.

5. The reciprocating high-pressure washer according to claim 4, characterized in that: The pump body is also provided with a third cylindrical hole that runs through it in the front-rear direction, and the third cylindrical hole constitutes the piston chamber; the pump body is also provided with a mounting hole that communicates with the side wall of the third cylindrical hole, for the roller to extend into the piston chamber.

6. The reciprocating high-pressure washer according to claim 5, characterized in that: The pump body also includes two end caps covering the front and rear ends of the pump body. Each end cap has a three-way chamber on the side facing the pump body that communicates with the corresponding first water outlet, the second cylindrical hole end, and the piston chamber.

7. The reciprocating high-pressure washer according to claim 6, characterized in that: Each end cap is also provided with an overflow hole, which is connected to the corresponding three-way chamber, and the overflow hole is equipped with an overflow valve.

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