CN109882371B

CN109882371B - Cleaning machine plunger pump and shell thereof

Info

Publication number: CN109882371B
Application number: CN201910143356.3A
Authority: CN
Inventors: 姚鼎; 周伟春; 赖其伟
Original assignee: Yuyao Linding Transmission Co ltd
Current assignee: Yuyao Linding Transmission Co ltd
Priority date: 2019-02-26
Filing date: 2019-02-26
Publication date: 2020-04-10
Anticipated expiration: 2039-02-26
Also published as: CN109882371A

Abstract

The invention discloses a plunger pump of a cleaning machine and a shell thereof, comprising a planar cam and a plurality of plungers, wherein the planar cam comprises a cam body and a connecting disc, the cam body is provided with a connecting column, and the connecting disc is circumferentially and movably connected with the connecting column; the end part of the plunger is provided with a connecting piece, and the other end of the connecting piece is connected with the connecting disc. Make no longer conflict between plunger and the cam plane and be connected, so, when pipeline inside part blockked up, the whole stroke of plunger is fixed unchangeable, consequently, water flow is fixed unchangeable, and partial jam can lead to the water pressure increase that forms in the plunger working process, and hydraulic increase can form the feedback again, and the impact increase to each part in the pipeline, thereby make the pipeline more difficult emergence jam before not blockking up, and can also play the effect of strikeing the jam.

Description

Cleaning machine plunger pump and shell thereof

Technical Field

The invention relates to the technical field of plunger pumps, in particular to a cleaning machine plunger pump and a shell thereof.

Background

The plunger pump is a common pump, and is very common in the field of cleaning machines, particularly household cleaning machines, wherein a Chinese patent with an authorization publication number of CN100340766C and an application date of 2004, 4 and 16 discloses a plunger pump of a high-pressure cleaning machine, as can be seen from the attached figure 3, the principle of the plunger pump is that a motor drives a plane cam to rotate, one end of a plunger is abutted against the plane cam, and in the rotating process of the plane cam, the plunger is pushed to move towards the direction of a pressure plane cam and is reset under the action of a plunger spring, so that a piston moves.

Since the plunger pump used in the washing machine has a large requirement on the use pressure, the passage becomes smaller if the plunger pump partially blocks the pipeline during a long-time use. Especially, when taking place to block up on the passageway of intaking, can cause the plunger spring can't in time accomplish the reseing of plunger, then will be driven by the plane cam again and take place principle plane cam direction and remove, consequently, lead to the stroke of plunger to shorten, intake, the corresponding reduction of water yield all can, and can influence the water pressure size, lead to the cleaning performance of cleaning machine to descend.

Disclosure of Invention

The invention aims to provide a plunger pump of a cleaning machine, which has the advantages of difficult blockage and no reduction of outlet water pressure when partial blockage occurs.

The technical purpose of the invention is realized by the following technical scheme:

a plunger pump of a cleaning machine comprises a planar cam and a plurality of plungers, wherein the planar cam comprises a cam body and a connecting disc, a connecting column is arranged on the cam body, and the connecting disc is circumferentially movably connected with the connecting column; the end part of the plunger is provided with a connecting piece, and the other end of the connecting piece is connected with the connecting disc.

So set up, make no longer conflict between plunger and the cam plane and be connected, so, when the inside part of pipeline blockked up, the whole stroke of plunger is fixed unchangeable, therefore, water flow is fixed unchangeable, and partial jam can lead to the water pressure increase that forms in the plunger working process, and hydraulic increase can form the feedback again, to the impact increase of each part in the pipeline, thereby make the pipeline more difficult emergence jam before not blockking up, and can also play the effect of strikeing the jam.

More preferably: the connecting column is in threaded connection with a limiting nut used for limiting the connecting disc axially, and a first thrust bearing is sleeved on the connecting column between the connecting disc and the limiting nut.

So set up, simple structure, simple to operate, the connection pad rotates on the spliced pole and can not produce great resistance under first thrust bearing's effect simultaneously.

More preferably: a second thrust bearing is arranged between the cam body and the connecting disc, and one end of the connecting piece is abutted to the second thrust bearing.

So set up, make the connecting piece support to establish on second thrust bearing to make plunger, connection pad and cam body form a whole, so when planar cam is connected with driving motor, only need with planar cam insert establish driving motor on can, and need not all carry out fixed connection with planar cam and driving motor's pivot in axial and circumference, make the installation simple and convenient more.

More preferably: the connecting piece includes connecting rod and connection ball, be provided with the connecting hole on the connection pad, the connecting rod passes connecting hole and plunger threaded connection.

So set up, can install the spliced pole on the connection pad earlier, then with plunger and connecting rod threaded connection get up can again, and then can simplify the installation.

More preferably: the side wall of the connecting ball is provided with at least one tool slot hole.

So set up, can use the instrument to control the spliced pole through the instrument slotted hole and rotate to make things convenient for being connected between spliced pole and the plunger.

More preferably: the plane cam is provided with a jack used for being connected with a driving motor, the jack is arranged in an inclined mode, and the cross section of the jack is in a regular polygon shape.

So set up, when the installation with the plane cam insert establish to driving motor the pivot can, very simple, convenient.

More preferably: set up inhalant canal and exhalant canal on the plunger pump, every the plunger all is connected with inhalant canal and exhalant canal, just the junction of plunger and inhalant canal is provided with the check valve of intaking, the plunger is provided with out water check valve with exhalant canal's being connected, all it is provided with always check valve to go out between water check valve and exhalant canal, it is formed with the water storage chamber to go out water check valve and always check valve.

Due to the arrangement, the water inlet one-way valve and the water outlet one-way valve are arranged, so that water flows from the water inlet channel to the water outlet channel in the working process of the plunger; and the setting of total check valve firstly, can increase out water pressure, secondly, can be used for forming the water storage chamber for the play water that a plurality of plungers work and form is continuous and stable.

More preferably: the plunger pump also comprises an idle loop channel, one end of the idle loop channel is communicated with the water inlet channel, and the other end of the idle loop channel is communicated with the water outlet channel; an air inlet is formed in the idle loop channel, and a valve plug used for sealing the air inlet and communicating the idle loop channel and the water outlet channel at the same time is arranged at the air inlet.

With the arrangement, when the pipeline in the plunger pump is blocked, the valves of the water inlet channel and the water outlet channel can be closed, then the valve plug at the air inlet is opened, and at the moment, the driving motor is started to drive the plunger to work, so that all water in the plunger pump can be discharged; after stopping driving motor, open inhalant canal earlier, driving motor continues work, and rivers are discharged from the air inlet this moment, can form the rivers impact in the pipeline of plunger pump at this in-process, after relapseing many times, can strike the place that blocks up in the pipeline, lead to stifled. And after the blockage removing operation is finished, the air inlet is closed, the driving motor is closed at the same time, then the water outlet channel is opened, and after the driving motor is started again, continuous cleaning water flow can be formed in the water outlet channel again.

The second purpose of the invention is to provide a plunger pump of a cleaning machine and a shell thereof.

The second technical purpose of the invention is realized by the following technical scheme:

the utility model provides a shell of cleaning machine plunger pump, includes plunger shell and passageway shell, in plunger shell was located to plane cam and plunger, all pipelines and check valve all located in the passageway shell.

More preferably: the channel shell comprises a bottom cover and a top cover, the water inlet channel, the water outlet channel and the idle loop channel are integrally arranged on the bottom cover, and the water inlet one-way valve and the main one-way valve are positioned between the bottom cover and the top cover; the water outlet check valve is characterized in that a plurality of mounting holes are formed in the top cover, the water outlet check valve is mounted in the mounting holes respectively, and bolt covers are mounted on the mounting holes.

So set up, at first can make into water check valve, total check valve and go out water check valve installation comparatively convenient, in addition, all be formed with the cavity (the installation cavity and the water storage chamber of check valve) in the place that the pipeline was bent, so for the spot is difficult to form the jam in the place of bending.

In conclusion, the invention has the following beneficial effects:

1. the plunger is connected to the plane cam, so that the plunger forms a fixed reciprocating form, the water yield of the plunger is kept unchanged no matter whether the pipeline is blocked or not, and the water outlet pressure of the water outlet channel is not reduced or increased when the pipeline is blocked;

2. by adopting the arrangement of the idle loop channel, the plunger pump can empty water, so that water flow impact is formed on a blocking point when water is fed again, and blockage is blocked.

Drawings

FIG. 1 is a schematic diagram of the first embodiment;

FIG. 2 is a first schematic view of a configuration of a midplane cam and plunger of the first embodiment;

FIG. 3 is a second schematic structural view of the cam and plunger of the first embodiment;

FIG. 4 is a schematic structural view of a connector according to a first embodiment;

FIG. 5 is a third schematic structural view of a midplane cam and plunger of the first embodiment;

FIG. 6 is a schematic structural diagram of the first embodiment;

FIG. 7 is a second schematic structural view of the second embodiment;

FIG. 8 is a schematic structural diagram of a top cover in the second embodiment;

FIG. 9 is a second schematic structural view of a top cover in the second embodiment;

fig. 10 is a schematic structural diagram of the bottom cover in the second embodiment.

In the figure, 1, a plane cam; 11. a cam body; 12. a connecting disc; 111. a jack; 121. connecting holes; 13. a second thrust bearing; 14. a first thrust bearing; 15. a limit nut; 2. a plunger; 31. a water inlet channel; 32. a water outlet channel; 33. a lost motion circuit channel; 331. an air inlet; 41. a water inlet one-way valve; 42. a water outlet one-way valve; 43. a master check valve; 6. a connecting member; 61. a connecting ball; 62. a connecting rod; 63. a tool slot; 7. a plunger housing; 71. a through hole; 8. a channel housing; 81. a bottom cover; 82. a top cover; 821. mounting holes; 822. and (4) covering the bolt.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

Example 1: a plunger pump of a cleaning machine is shown in figure 1 and comprises a plane cam 1, three plungers 2, a water inlet channel 31, a water outlet channel 32, three water inlet check valves 41, three water outlet check valves 42 and a general check valve 43.

The three plungers 2 are all connected with the water inlet channel 31 and the water outlet channel 32, the three water inlet check valves 41 are respectively arranged at the joints of the three plungers 2 and the water inlet channel 31, and the three water outlet check valves 42 are respectively arranged at the joints of the three plungers 2 and the water outlet channel 32. The three water outlet check valves 42 are simultaneously communicated with the main check valve 43 and are communicated with the water outlet channel 32 after passing through the main check valve 43.

A water storage cavity is formed between the water outlet one-way valve 42 and the main one-way valve 43 (see fig. 9 in embodiment 2).

One end of the idle loop passage 33 is communicated with the water inlet passage 31, and the other end is communicated with the water outlet passage 32; an inlet 331 is provided to the idle reduction passage 33 (see fig. 10 in embodiment 2), and a valve plug (not illustrated) for simultaneously closing the inlet 331 and communication between the idle reduction passage 33 and the outlet passage 32 is provided at the inlet 331. When the internal pipeline of the plunger 2 pump is blocked, the valves of the water inlet channel 31 and the water outlet channel 32 can be closed, then the valve plug at the air inlet 331 is opened, and at the moment, the driving motor is started to drive the plunger 2 to work, so that all water in the plunger 2 pump can be discharged; after stopping driving motor, seal the valve plug, open the valve of inhalant canal 31 and exhalant canal 32 once more, restart driving motor can form water impact in the pipeline of plunger 2 pump, relapse a lot of backs, can strike the place that blocks up in the pipeline, go on to lead to stifled.

Referring to fig. 2 and 3, the plane cam 1 includes a cam body 11 and a connecting disc 12, the cam body 11 is provided with a connecting column, a second thrust bearing 13 is sleeved on the connecting column, and the connecting disc 12 is sleeved on the connecting column and is located outside the second thrust bearing 13. Three connection holes 121 are provided in the connection plate 12, and a connection member 6 is connected to the connection holes 121. As shown in fig. 4, the connecting member 6 includes a connecting rod 62 and a connecting ball 61, wherein, referring to fig. 2 and 3, the connecting ball 61 is located between the connecting disc 12 and the second thrust ball bearing, one end of the connecting rod 62 is integrally connected with the connecting ball 61, and the other end thereof passes through the connecting hole 121 and then is screwed with the plunger 2.

Still the cover is equipped with a first thrust bearing 14 on the spliced pole, and the spliced pole tip threaded connection outside first thrust bearing 14 has a stop nut 15, through fastening stop screw, promotes connection pad 12 and will connect ball 61 to establish on the terminal surface of second thrust bearing 13.

As shown in fig. 4, two tool slots 63 are provided in the side walls of the connecting ball 61.

Referring to fig. 5, the plane cam 1 is provided with an insertion hole 111 for connecting with a driving motor, the insertion hole 111 is disposed in an inclined manner, and the cross section of the insertion hole 111 is disposed in a regular hexagon.

Example 2: a shell of a plunger pump of a cleaning machine is shown in figures 6 and 7 and comprises a plunger shell 7 and a channel shell 8, a plane cam 1 and a plunger 2 are arranged in the plunger shell 7, and a through hole 71 is formed in the bottom of the plunger shell 7 and used for a rotating shaft of a driving motor to penetrate through and be connected with the plane cam 1 in an inserted mode.

All conduits and one-way valves are provided in the channel housing 8. The channel housing 8 is formed by splicing a bottom cover 81 and a top cover 82, wherein the three plungers 2 are slidably inserted on the bottom cover 81.

The water inlet channel 31, the water outlet channel 32 and the idle rotation loop channel 33 are integrally arranged on the bottom cover 81, and the water inlet check valve 41 and the main check valve 43 are all positioned between the bottom cover 81 and the top cover 82. The top cover 82 is provided with a plurality of mounting holes 821, the outlet check valves 42 are respectively mounted in the mounting holes 821, and the bolt covers 822 are mounted on the mounting holes 821.

As shown in fig. 8, the installation cavity of the water inlet check valve 41 is communicated with the piston cavity of the plunger 2, and one of the installation cavity and the piston cavity of the water inlet check valve 41 is communicated with the installation cavity of the water outlet check valve 42. As shown in fig. 9, the three mounting holes 821 are communicated with each other to form the water storage chamber.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the present invention.

Claims

1. The utility model provides a cleaning machine plunger pump, includes plane cam (1) and a plurality of plunger (2), characterized by: the plane cam (1) comprises a cam body (11) and a connecting disc (12), wherein the cam body (11) is provided with a connecting column, and the connecting disc (12) is circumferentially movably connected with the connecting column; a connecting piece (6) is arranged at the end part of the plunger (2), and the other end of the connecting piece (6) is connected with the connecting disc (12);

the plunger pump (2) is provided with a water inlet channel (31) and a water outlet channel (32), each plunger (2) is connected with the water inlet channel (31) and the water outlet channel (32), a water inlet check valve (41) is arranged at the joint of the plunger (2) and the water inlet channel (31), a water outlet check valve (42) is arranged at the joint of the plunger (2) and the water outlet channel (32), a main check valve (43) is arranged between all the water outlet check valves (42) and the water outlet channel (32), and a water storage cavity is formed between the water outlet check valve (42) and the main check valve (43);

the plunger (2) pump also comprises an idle rotation loop channel (33), one end of the idle rotation loop channel (33) is communicated with the water inlet channel (31), and the other end of the idle rotation loop channel (33) is communicated with the water outlet channel (32); an air inlet (331) is formed in the idle rotation loop channel (33), and a valve plug used for sealing the air inlet (331) and communicating the idle rotation loop channel (33) and the water outlet channel (32) at the same time is arranged at the air inlet (331).

2. The washer plunger pump as set forth in claim 1, wherein: the connecting column is in threaded connection with a limiting nut (15) used for axially limiting the connecting disc (12), and a first thrust bearing (14) is sleeved on the connecting column between the connecting disc (12) and the limiting nut (15).

3. The washer plunger pump as set forth in claim 2, wherein: a second thrust bearing (13) is arranged between the cam body (11) and the connecting disc (12), and one end of the connecting piece (6) is abutted to the second thrust bearing (13).

4. A washer plunger pump as claimed in claim 1 or 3 wherein: the connecting piece (6) comprises a connecting rod (62) and a connecting ball (61), a connecting hole (121) is formed in the connecting disc (12), and the connecting rod (62) penetrates through the connecting hole (121) to be in threaded connection with the plunger (2).

5. The washer plunger pump as set forth in claim 4, wherein: the side wall of the connecting ball (61) is provided with at least one tool slot hole (63).

6. The washer plunger pump as set forth in claim 1, wherein: the plane cam (1) is provided with a jack (111) connected with a driving motor, the jack (111) is obliquely arranged, and the cross section of the jack (111) is in a regular polygon shape.

7. The utility model provides a casing of cleaning machine plunger pump which characterized by: the plunger pump for the washing machine comprises the plunger pump for the washing machine as claimed in any one of claims 1 to 6, and a plunger housing (7) and a channel housing (8), wherein the plane cam (1) and the plunger (2) are arranged in the plunger housing (7), and all the pipelines and the one-way valves are arranged in the channel housing (8).

8. The housing for a washer plunger pump as set forth in claim 7, wherein: the channel shell (8) comprises a bottom cover (81) and a top cover (82), the water inlet channel (31), the water outlet channel (32) and the idle loop channel (33) are uniformly arranged on the bottom cover (81), and the water inlet one-way valve (41) and the main one-way valve (43) are positioned between the bottom cover (81) and the top cover (82); the top cover (82) is provided with a plurality of mounting holes (821), the outlet check valves (42) are respectively mounted in the mounting holes (821), and the mounting holes (821) are provided with bolt covers (822).