Novel water-cooled plunger pump

Abstract

The utility model relates to the technical field of plunger pumps, in particular to a novel water-cooled plunger pump which comprises a motor assembly and a water pump assembly, the motor assembly comprises a shell, an installation cavity is formed in the shell, a driving motor and a reciprocating assembly are arranged in the installation cavity, and the output end of the driving motor is in transmission connection with the reciprocating assembly. The water pump assembly comprises a pump body, a compression cavity is formed in the pump body, a piston is movably arranged in the compression cavity and is in transmission connection with the reciprocating assembly, and the water outlet end of the compression cavity is communicated with a water outlet pipe. The water inlet pipe is communicated between the water inlet end of the compression cavity and the water outlet end of the water cooling channel, when cold water flows through the water cooling channel, heat dissipated by the driving motor in the mounting cavity can be absorbed, so that the motor is cooled, finally, the cold water can be discharged to the water inlet pipe from the water outlet end of the water cooling channel, and the shell is compact in structure, small in size and capable of being conveniently carried by a user.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, and in particular to a novel water-cooled plunger pump. Background Technology

[0002] A plunger pump is a machine that uses a power unit (electric motor, gasoline engine, or diesel engine) to generate high-pressure water to wash the surface of an object. However, the electric motor in the power unit generally uses fan blades for cooling, which is not only slow in heat dissipation but also noisy; therefore, plunger pumps with water-cooling structures have appeared on the market.

[0003] Patent CN213051998U discloses an integrated drive and control structure for a high-pressure washer, including a controller, a motor assembly, and a water pump. The controller includes upper and lower housings, a water-cooling pipe, and a control circuit board. The control circuit board is installed inside the upper and lower housings. The water-cooling pipe is embedded in and passes through both ends of the upper and lower housings. Both ends of the water-cooling pipe have inlet and outlet water interfaces that are connected to the internal cavity. Heating elements are attached to the two axial sides of the water-cooling pipe. The motor assembly includes a front housing, a rear housing, and an external rotor three-phase synchronous motor. The external rotor three-phase synchronous motor is installed in the fixedly connected front and rear housings. The lower housing of the controller is fixedly connected to the rear housing of the motor. The water pump is fixedly connected to the front housing of the motor. The front end of the motor shaft is connected to the water pump drive rotation mechanism. The water outlet of the water-cooling pipe is connected to the water inlet of the water pump through a water flow pipe.

[0004] The problem with the above technology is that the above heat dissipation method is to absorb the heat emitted by the motor by cold water flowing through the water cooling pipe, thereby cooling the motor. However, the controller is located at the rear of the motor assembly of the cleaning machine, and the water cooling pipe is located inside the controller. This installation method has a high space occupation rate and a large size, making it inconvenient for users to carry.

[0005] To address these technical problems, a novel water-cooled plunger pump is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the purpose of this utility model is to provide a new type of water-cooled plunger pump with a compact structure, small size, and convenient portability for users.

[0007] The technical solution adopted by this utility model to solve the problem is: a novel water-cooled plunger pump, including a motor assembly and a water pump assembly. The motor assembly includes a housing, and a mounting cavity is provided inside the housing. A drive motor and a reciprocating assembly are provided inside the mounting cavity. The output end of the drive motor is driven and connected to the reciprocating assembly. A water-cooling channel is provided around the periphery of the mounting cavity. The water inlet end of the water-cooling channel is connected to the outside. The water pump assembly includes a pump body, and a compression chamber is provided inside the pump body. A piston is movably disposed inside the compression chamber. The piston is driven and connected to the reciprocating assembly. The water outlet end of the compression chamber is connected to a water outlet pipe. A water inlet pipe is connected between the water inlet end of the compression chamber and the water outlet end of the water-cooling channel.

[0008] As a further improvement to the above technical solution, the water cooling channel includes a first water cooling channel and a second water cooling channel in a U-shape. The first water cooling channel includes a first water inlet and a first water outlet, and the second water cooling channel includes a second water inlet and a second water outlet. The first water inlet is connected to the outside, the first water outlet is connected to the second water inlet, and the second water outlet is connected to the water inlet end of the water inlet pipe.

[0009] As a further improvement to the above technical solution, one-way valves are provided between the water inlet pipe and the compression chamber, and between the compression chamber and the water outlet pipe.

[0010] As a further improvement to the above technical solution, a water passage pipe is connected between the inlet pipe and the outlet pipe. An overflow valve is installed inside the water passage pipe, and a pressure switch is installed on the water passage pipe. The pressure switch is used to sense the water pressure inside the water passage pipe and transmit a signal to the overflow valve.

[0011] As a further improvement to the above technical solution, a pressure gauge is installed at the water outlet pipe.

[0012] As a further improvement to the above technical solution, the output end of the drive motor extends laterally to both ends, and reciprocating components and pump bodies are symmetrically arranged at both ends of the drive motor, and a water inlet pipe is provided between one of the water outlet pipes and the other water outlet pipe.

[0013] As a further improvement to the above technical solution, flexible hoses are provided between the first and last sections of the first water-cooling channel and between the first and last sections of the second cold water channel.

[0014] The beneficial effects of this utility model are: a water-cooling channel is provided around the mounting cavity of the housing, and cold water can enter from the inlet end of the water-cooling channel. When the cold water flows through the water-cooling channel, it can absorb the heat emitted by the drive motor and reciprocating components in the mounting cavity, thereby cooling the drive motor and reciprocating components. Finally, the cold water can be discharged from the outlet end of the water-cooling channel to the inlet pipe. The housing has a compact structure and small size, making it convenient for users to carry. Attached Figure Description

[0015] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0016] Figure 1 This is a structural diagram of the single-sided pump of this utility model;

[0017] Figure 2 This is a side view of the single-sided pump of this utility model;

[0018] Figure 3 for Figure 2 A cross-sectional view of section AA;

[0019] Figure 4 This is a top view of the single-sided pump of this utility model;

[0020] Figure 5 for Figure 4 A cross-sectional view of the BB section;

[0021] Figure 6 This is a rear view of the single-sided pump of this utility model;

[0022] Figure 7 for Figure 6 A cross-sectional view of the CC section;

[0023] Figure 8 for Figure 6 A cross-sectional view of the DD section;

[0024] Figure 9 This is a structural diagram of the double-sided pump of this utility model;

[0025] Figure 10 This is a top view of the double-sided pump of this utility model;

[0026] Figure 11 for Figure 10 A cross-sectional view of the EE section;

[0027] Figure 12 for Figure 10 A cross-sectional view of the FF section;

[0028] Figure 13 This is a side view of the double-sided pump of this utility model;

[0029] Figure 14 for Figure 13 A cross-sectional view of the GG section.

[0030] In the diagram: 1-Motor assembly, 11-Housing, 12-Mounting cavity, 14-First water cooling channel, 141-First water inlet, 142-First water outlet, 15-Second water cooling channel, 151-Second water inlet, 152-Second water outlet, 2-Water pump assembly, 21-Pump body, 22-Compression chamber, 23-Piston, 24-One-way valve, 3-Drive motor, 4-Reciprocating assembly, 5-Outlet pipe, 51-Pressure gauge, 6-Inlet pipe, 7-Pass pipe, 71-Overflow valve, 72-Pressure switch, 8-Water inlet pipe, 9-Hose. Detailed Implementation

[0031] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0032] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0035] Reference Figures 1 to 8A novel water-cooled plunger pump includes a motor assembly 1 and a water pump assembly 2. The motor assembly 1 includes a housing 11, an installation cavity 12 is provided inside the housing 11, a drive motor 3 and a reciprocating assembly 4 are provided inside the installation cavity 12, the output end of the drive motor 3 is driven and connected to the reciprocating assembly 4, a water-cooling channel is provided around the periphery of the installation cavity 12, and the water inlet end of the water-cooling channel is connected to the outside. The water pump assembly 2 includes a pump body 21, a compression chamber 22 is provided inside the pump body 21, a piston 23 is movably arranged inside the compression chamber 22, the piston 23 is driven and connected to the reciprocating assembly 4, the water outlet end of the compression chamber 22 is connected to a water outlet pipe 5, and a water inlet pipe 6 is connected between the water inlet end of the compression chamber 22 and the water outlet end of the water-cooling channel.

[0036] In use, cold water enters from the inlet end of the water-cooling channel. As the cold water flows through the water-cooling channel, it absorbs the heat emitted by the drive motor 3 and reciprocating assembly 4 in the mounting cavity 12, thereby cooling the drive motor 3 and reciprocating assembly 4. The cold water can then be discharged from the outlet end of the water-cooling channel to the inlet pipe 6. The cold water enters the compression chamber 22 from the inlet pipe 6. The drive motor 3 can drive the reciprocating assembly 4 to reciprocate, thereby driving the piston 23 to reciprocate in the compression chamber 22, thereby compressing the cold water in the compression chamber 22. The cold water is then discharged from the outlet end of the compression chamber 22 to the outlet pipe 5, forming a high-pressure water flow at the outlet pipe 5.

[0037] Reference Figures 5 to 8 In a preferred embodiment, the water cooling channel includes a U-shaped first water cooling channel 14 and a U-shaped second water cooling channel 15. The first water cooling channel 14 includes a first water inlet 141 and a first water outlet 142. The second water cooling channel 15 includes a second water inlet 151 and a second water outlet 152. The first water inlet 141 is connected to the outside, the first water outlet 142 is connected to the second water inlet 151, and the second water outlet 152 is connected to the water inlet end of the water inlet pipe 6.

[0038] Cold water can enter the first water-cooling channel 14 from the first inlet 141, then flow through the first outlet 142, through the second inlet 151 and into the second water-cooling channel 15, and finally the cold water can be discharged from the second outlet 152 to the inlet pipe 6, thereby realizing the circulation of cold water in the water-cooling channel.

[0039] In a preferred embodiment, in order to prevent the cold water in the compression chamber 22 from flowing back, a one-way valve 24 is provided between the inlet pipe 6 and the compression chamber 22 and between the compression chamber 22 and the outlet pipe 5.

[0040] Reference Figures 1 to 3 In a preferred embodiment, a water inlet pipe 6 and a water outlet pipe 5 are connected by a water passage pipe 7. An overflow valve 71 is installed inside the water passage pipe 7, and a pressure switch 72 is installed on the water passage pipe 7. The pressure switch 72 is used to sense the water pressure inside the water passage pipe 7 and send a signal to the overflow valve 71.

[0041] When cold water flows through the inlet pipe 6, some of the cold water can enter the water pipe 7. When the pressure switch 72 detects that the water pressure in the water pipe 7 is too high, the pressure switch 72 can send a signal to the overflow valve 71 to open the overflow valve 71, so that the cold water in the water pipe 7 can flow to the water pipe 7, thereby reducing the water pressure in the water pipe 7.

[0042] In a preferred embodiment, a pressure gauge 51 is installed at the water outlet pipe 5, which can display the water pressure at the water outlet pipe 5.

[0043] Reference Figures 9 to 14 In a preferred embodiment, the output end of the drive motor 3 extends laterally to both ends. The two ends of the drive motor 3 are symmetrically provided with a reciprocating component 4 and a pump body 21. A water inlet pipe 8 is provided between one water outlet pipe 5 and the other water outlet pipe 5. When in use, the high-pressure water flow discharged from one water outlet pipe 5 can be discharged from the other water outlet pipe 5 through the water inlet pipe 8.

[0044] In a preferred embodiment, flexible hoses 9 are provided between the first and last sections of the first water-cooling channel 14 and between the first and last sections of the second cold water channel.

[0045] The reciprocating component 4 and the drive motor 3 mentioned above are both prior art disclosed in publication number CN118971479A.

[0046] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A novel water-cooled plunger pump, characterized in that: comprising a motor assembly (1) and a water pump assembly (2), the motor assembly (1) comprises a shell (11), a mounting cavity (12) is arranged in the shell (11), a drive motor (3) and a reciprocating assembly (4) are arranged in the mounting cavity (12), the output end of the drive motor (3) is drivingly connected to the reciprocating assembly (4), a water cooling channel is arranged around the periphery of the mounting cavity (12), the water inlet end of the water cooling channel is communicated with the outside, the water pump assembly (2) comprises a pump body (21), a compression chamber (22) is arranged in the pump body (21), a piston (23) is movably arranged in the compression chamber (22), the piston (23) is drivingly connected to the reciprocating assembly (4), the water outlet end of the compression chamber (22) is communicated with a water outlet pipe (5), and the water inlet end of the compression chamber (22) and the water outlet end of the water cooling channel are communicated with a water inlet pipe (6).

2. The novel water-cooled plunger pump according to claim 1, characterized in that: the water cooling channel comprises a first water cooling channel (14) and a second water cooling channel (15) in a U shape, the first water cooling channel (14) comprises a first water inlet (141) and a first water outlet (142), the second water cooling channel (15) comprises a second water inlet (151) and a second water outlet (152), the first water inlet (141) is communicated with the outside, the first water outlet (142) is communicated with the second water inlet (151), and the second water outlet (152) is communicated with the water inlet end of the water inlet pipe (6).

3. The novel water-cooled plunger pump according to claim 2, characterized in that: a one-way valve (24) is arranged between the water inlet pipe (6) and the compression chamber (22) and between the compression chamber (22) and the water outlet pipe (5).

4. The novel water-cooled plunger pump according to claim 3, characterized in that: a water passing pipe (7) is communicated between the water inlet pipe (6) and the water outlet pipe (5), a spillway valve (71) is arranged in the water passing pipe (7), a pressure switch (72) is arranged on the water passing pipe (7), and the pressure switch (72) is used for sensing the water pressure in the water passing pipe (7) and transmitting a signal to the spillway valve (71). A pressure gauge (51) is arranged at the water outlet pipe (5).

6. The novel water-cooled plunger pump according to claim 5, characterized in that: the output end of the drive motor (3) extends transversely to both ends, the reciprocating assembly (4) and the pump body (21) are symmetrically arranged at both ends of the drive motor (3), and a water receiving pipe (8) is arranged between one water outlet pipe (5) and the other water outlet pipe (5).

7. The novel water-cooled plunger pump according to claim 6, characterized in that: a hose (9) is arranged between the first section and the last section of the first water cooling channel (14) and between the first section and the last section of the second water cooling channel. ​ 5. A novel water-cooled plunger pump as claimed in claim 4, characterized in that: ​ ​ ​ ​ ​

Images