CN216642358U

CN216642358U - Plunger pump of high-pressure cleaning machine

Info

Publication number: CN216642358U
Application number: CN202123435866.XU
Authority: CN
Inventors: 文远华
Original assignee: Zhejiang Kuhong Machinery Technology Co ltd
Current assignee: Zhejiang Kuhong Machinery Technology Co ltd
Priority date: 2021-12-29
Filing date: 2021-12-29
Publication date: 2022-05-31
Anticipated expiration: 2031-12-29

Abstract

The utility model belongs to the technical field of high-pressure cleaning machines, and relates to a plunger pump of a high-pressure cleaning machine, which comprises a power device, a crankcase and a pump head, wherein a plurality of plunger units are arranged in the pump head, each plunger unit comprises an independent water inlet cavity, an independent water outlet cavity and a plunger cavity, a water inlet one-way valve communicated with a water inlet channel is arranged in the water inlet cavity, a water outlet one-way valve communicated with a water outlet channel is arranged in the water outlet cavity, a plunger connected with a crankshaft in a transmission manner is arranged in the plunger cavity in a sliding manner, the pump head is of an integrated structure, a process hole coaxial with the water inlet one-way valve is arranged on the pump head, the process hole is sealed through a plug, and two ends of a valve seat of the water inlet one-way valve are axially limited through a step structure and a snap spring in the water inlet cavity respectively. The plunger pump of the high-pressure cleaning machine provided by the utility model reduces the number of assembly structural parts and reduces the manufacturing cost.

Description

Plunger pump of high-pressure cleaning machine

Technical Field

The utility model belongs to the technical field of high-pressure cleaning machines, and relates to a plunger pump of a high-pressure cleaning machine.

Background

The plunger pump used in the existing high-pressure cleaning machine generally comprises a power device, a crankcase and a pump head. A plurality of plunger units are arranged in the pump head, and each plunger unit comprises an independent water inlet cavity, an independent water outlet cavity and an independent plunger cavity. The water inlet cavity is internally provided with a water inlet one-way valve communicated with the water inlet channel, the water outlet cavity is internally provided with a water outlet one-way valve communicated with the water outlet channel, and the plunger cavity is internally provided with a plunger in a sliding manner and connected with the crankshaft in a transmission manner. The power device drives the plurality of plungers to reciprocate through the transmission of the crankcase, and the reciprocating motion of the plungers brings volume change and is matched with the one-way valve to drive water inlet and outlet actions. The existing pump head is composed of two parts so as to facilitate processing and installation of the check valve, but the defects of complex processing technology and high manufacturing cost are caused by various structural parts.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides the plunger pump of the high-pressure cleaning machine, which reduces the assembly structural parts and the manufacturing cost.

In order to solve the above technical problems, the object of the present invention is achieved by the following technical solutions:

the utility model provides a high pressure cleaner's plunger pump, includes power device, crankcase, pump head, be provided with a plurality of plunger units in the pump head, every plunger unit all includes independent intake antrum, goes out water cavity and plunger chamber, be provided with the check valve of intaking of intercommunication water inlet channel in the intake antrum, go out the water cavity and be provided with the play water check valve that feeds through water outlet channel, the plunger intracavity slides and is provided with the plunger of being connected with crankshaft drive, pump head formula structure as an organic whole is provided with the fabrication hole coaxial with the check valve that intakes on the pump head, the fabrication hole passes through the end cap and seals, it is spacing through the stair structure and the jump ring axial of the intracavity of intaking respectively to intake the disk seat both ends of check valve.

In the above plunger pump of the high pressure cleaning machine, the water inlet check valve is of a cylindrical structure, the rear end of the valve seat of the water inlet check valve is in abutting connection with the step structure, the front end of the valve seat of the water inlet check valve is in abutting connection with the clamp spring, and the clamp spring is clamped on the annular groove in the water inlet cavity.

In the plunger pump of the high-pressure cleaning machine, each plunger unit is provided with an independent water return channel, and the water return channel is connected with the rear end of the plunger cavity and the water inlet cavity.

In the plunger pump of the high-pressure cleaning machine, the bottom of the pump head is axially provided with a strip-shaped block protruding out of the pump head, the water return channel is arranged in the strip-shaped block, and the strip-shaped block and the pump head are of an integrated structure.

In the plunger pump of the high-pressure cleaning machine, the backwater channel comprises an axial channel and a radial channel which are communicated with each other, the axial channel is connected with the plunger cavity, the radial channel is connected with the water inlet cavity, the pump head is respectively provided with processing holes for processing the axial channel and the radial channel, the processing holes are sealed through plugs, and the processing holes are respectively arranged coaxially with the axial channel and the radial channel.

In foretell high pressure cleaner's plunger pump, it is sealed through seal assembly between plunger and the plunger chamber, seal assembly is including the sealing spring, main water seal and the vice water seal that set gradually, vice water seal includes vice water seal seat and sets up the sealing washer in vice water seal seat.

In the plunger pump of the high-pressure cleaning machine, the main water seal is a packing water seal.

In the plunger pump of the high-pressure cleaning machine, gaskets are arranged at two ends of the main water seal, one end of the sealing spring is in abutting connection with the gaskets, and the other end of the sealing spring is in abutting connection with a step surface in the plunger cavity.

Compared with the prior art, the utility model has the following beneficial effects:

1. the utility model changes the structure of the traditional pump head, replaces the split type pump head with the integrated structure, and reduces the manufacturing cost by reducing the assembly structural parts. Meanwhile, the structure of the one-way valve is redesigned, so that the one-way valve can be mounted more conveniently, and the service life is longer.

2. The plunger pump changes the structure that each plunger unit shares the water return channel in the prior art, redesigns the water return channel, and can better balance the pressure of the pump cavity and ensure that the pressure delivery of the plunger pump is more stable by using the independent water return channel on the basis of the integrated pump head.

3. The utility model improves the sealing structure of the plunger piston, and adopts the matching of the packing water seal and the sealing spring, so that the plunger piston has better sealing effect.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is an enlarged view of a portion of FIG. 2;

reference numerals: 1. a crankcase; 2. a pump head; 3. a water inlet one-way valve; 4. a water outlet one-way valve; 5. a crankshaft; 6. a plunger; 7. a plug; 8. a clamp spring; 9. a water return channel; 10. a bar-shaped block; 11. a seal spring; 12. a main water seal; 13. an auxiliary water seal; 14. and (7) a gasket.

Detailed Description

The utility model is further described in the following with reference to specific embodiments in conjunction with the accompanying drawings, see fig. 1-3:

the utility model provides a high pressure cleaner's plunger pump, includes power device (not drawn in the drawing), crankcase 1, pump head 2, be provided with a plurality of plunger units in the pump head 2, every plunger unit all includes independent intake antrum, play water cavity and plunger chamber, be provided with intercommunication inhalant canal's the check valve 3 that intakes in the intake antrum, go out the intracavity and be provided with intercommunication exhalant canal's play water check valve 4, the plunger intracavity slides and is provided with the plunger 6 of being connected with bent axle 5 transmission, 2 formula structures as an organic whole of pump head are provided with the fabrication hole coaxial with the influent check valve 3 on the pump head 2, the fabrication hole passes through end cap 7 and seals, the disk seat both ends of intaking check valve 3 are spacing through the stair structure and the 8 axial jump rings of the intracavity of intaking respectively.

Referring to fig. 2, the water inlet check valve 3 in the embodiment is a cylindrical structure, the rear end of the valve seat is in interference connection with the step structure, the front end of the valve seat is in interference connection with the snap spring 8, and the snap spring 8 is clamped on the annular groove in the water inlet cavity. During installation, the water inlet check valve 3 is placed through the fabrication hole, the rear end of the valve seat of the water inlet check valve 3 is in abutting connection with the step structure, then the water inlet check valve 3 is clamped into the clamp spring 8 to be fixed, and finally the fabrication hole is sealed by the plug 7. By changing the installation mode, the water inlet check valve 3 replaces a cone valve used in the prior art, the risk of deformation and leakage of the cone valve in the working process is avoided, and the service life of the check valve is prolonged.

On the basis of the structure of the integrated pump head 2, in order to enable the pressure transmission of the plunger pump to be more stable, each plunger unit is provided with an independent water return channel 9, and the water return channels 9 are connected with the rear end of the plunger cavity and the water inlet cavity.

The specific setting mode is as follows: the bottom axial of pump head 2 is provided with the bar piece 10 of protrusion in pump head 2, return water passageway 9 sets up in bar piece 10, bar piece 10 and pump head 2 formula structure as an organic whole.

Referring to fig. 3, further, the water return channel 9 includes an axial channel and a radial channel that are communicated with each other, the axial channel is connected with the plunger cavity, the radial channel is connected with the water inlet cavity, the pump head 2 is provided with machining holes for machining the axial channel and the radial channel, the machining holes are sealed by plugs 7, the machining holes are coaxially arranged with the axial channel and the radial channel, and the axial channel and the radial channel are respectively formed by machining through the corresponding machining holes.

Compared with the attached drawing 3, the utility model also improves the sealing assembly between the plunger 6 and the plunger cavity, so that the sealing assembly has better sealing performance, the sealing assembly comprises a sealing spring 11, a main water seal 12 and an auxiliary water seal 13 which are arranged in sequence, and the auxiliary water seal 13 comprises an auxiliary water seal seat and a sealing ring (not shown in the attached drawing) arranged in the auxiliary water seal seat.

Preferably, the main water seal 12 is a packing water seal.

Further, for better installation seal assembly, the both ends of main water seal 12 are provided with gasket 14, sealing spring 11's one end is contradicted with gasket 14 and is connected, and the other end is contradicted with the step face in the plunger intracavity and is connected.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a high pressure cleaner's plunger pump, includes power device, crankcase (1), pump head (2), be provided with a plurality of plunger units in pump head (2), every plunger unit all includes independent intake antrum, goes out water cavity and plunger chamber, be provided with intercommunication water inlet channel's the check valve (3) of intaking in the intake antrum, go out the water intracavity and be provided with intercommunication water outlet channel's play water check valve (4), the plunger intracavity slides and is provided with plunger (6) of being connected with bent axle (5) transmission, a serial communication port, pump head (2) formula structure as an organic whole is provided with the fabrication hole coaxial with water inlet check valve (3) on pump head (2), the fabrication hole passes through end cap (7) and seals, the disk seat both ends of intaking check valve (3) are spacing through the stair structure and jump ring (8) axial in the water cavity respectively.

2. The plunger pump of a high-pressure cleaning machine according to claim 1, characterized in that each plunger unit is provided with an independent water return channel (9), and the water return channel (9) connects the rear end of the plunger cavity with the water inlet cavity.

3. The plunger pump of the high-pressure cleaning machine according to claim 2, characterized in that a bar-shaped block (10) protruding from the pump head (2) is axially arranged at the bottom of the pump head (2), the water return channel (9) is arranged in the bar-shaped block (10), and the bar-shaped block (10) and the pump head (2) are of an integrated structure.

4. The plunger pump of a high-pressure cleaning machine according to claim 2, characterized in that the water return channel (9) comprises an axial channel and a radial channel which are communicated with each other, and the pump head (2) is provided with processing holes for processing the axial channel and the radial channel, respectively, and the processing holes are sealed by plugs (7).

5. The plunger pump of the high pressure cleaning machine according to claim 1, wherein the plunger (6) and the plunger cavity are sealed by a sealing assembly, the sealing assembly comprises a sealing spring (11), a main water seal (12) and an auxiliary water seal (13) which are arranged in sequence, and the auxiliary water seal (13) comprises an auxiliary water seal seat and a sealing ring arranged in the auxiliary water seal seat.

6. The plunger pump of a high-pressure washer according to claim 5, characterized in that the main water seal (12) is a packing water seal.

7. The plunger pump of the high pressure cleaning machine according to claim 5, characterized in that the two ends of the main water seal (12) are provided with gaskets (14), one end of the sealing spring (11) is connected with the gasket (14) in an abutting mode, and the other end of the sealing spring is connected with a step surface in the plunger cavity in an abutting mode.