CN112576473A

CN112576473A - Piston type water pump device convenient for replacing water outlet pipe

Info

Publication number: CN112576473A
Application number: CN202110031059.7A
Authority: CN
Inventors: 张兴费
Original assignee: Nanjing Simirui Trading Co ltd
Current assignee: Nanjing Simirui Trading Co ltd
Priority date: 2021-01-11
Filing date: 2021-01-11
Publication date: 2021-03-30

Abstract

The invention discloses a piston type water pump device convenient for replacing a water outlet pipe, which comprises a working box body, wherein a power cavity is arranged in the working box body, a motor is fixedly arranged on the inner wall of the right side of the power cavity, the piston plate is used for controlling air pressure change to drive water flow to flow in a single direction, water filtering is carried out at a water inlet, the problem that water flow is not smooth due to blocking inside a pipeline is avoided, a filtering device adopts a threaded connection mode to facilitate taking down and cleaning a filter screen, the device also adopts a double-water-outlet rotation switching mode to ensure that the water pump does not need to be turned off in the process of replacing the water outlet pipeline, the water pump can automatically stop running for a period of time in the water outlet rotation switching process, the water pump damage caused by overlarge water pressure due to no water outlet channel in the switching process is avoided, and the.

Description

Piston type water pump device convenient for replacing water outlet pipe

Technical Field

The invention relates to the field of water pump devices, in particular to a piston type water pump device with a water outlet pipe convenient to replace.

Background

The water pump is a machine for conveying liquid or pressurizing liquid, and it can transfer the mechanical energy of prime mover or other external energy to the liquid to increase the energy of liquid, and is mainly used for conveying liquid including water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal, etc.

Traditional water pump device is in the course of the work, if need switch outlet conduit, can only select to stop the operation of water pump then manual break away from former outlet conduit water pump then will switch the pipeline and install on the water pump, nevertheless to switching over the comparatively frequent use scene of pipeline, the traditional water pump can't accomplish the fast switch-over of pipeline, frequently installs moreover and takes off outlet conduit and also can cause the sealing performance reduction of water pump. The present invention addresses the above-mentioned problems.

Disclosure of Invention

The technical problem is as follows:

the traditional water pump device cannot realize quick switching of pipelines in the frequent use scene of the switching pipeline, and the sealing performance of the water pump can be reduced due to frequent installation and removal of the water outlet pipeline.

In order to solve the problems, the embodiment designs a piston type water pump device convenient for replacing a water outlet pipe, the piston type water pump device convenient for replacing the water outlet pipe comprises a working box body, a power cavity is arranged in the working box body, a motor is fixedly arranged on the inner wall of the right side of the power cavity, the left end of the motor is in power connection with a power shaft which is rotationally connected with the inner wall of the left side of the power cavity, a pressure cavity is arranged in the working box body, a circulating device is arranged in the pressure cavity and comprises a piston plate which is arranged in the pressure cavity in a vertical sliding manner, a water outlet cavity is communicated with the inner wall of the lower side of the pressure cavity on the right end surface of the working box body, a one-way water outlet one-way valve is arranged in the water outlet cavity, a cleaning cavity with a rightward opening is arranged on the right end surface of the working box, a water inlet one-way valve for one-way water inlet is arranged in the water inlet cavity, a switching shaft is rotatably arranged on the right end face of the working box body, a switching device is arranged on the switching shaft and comprises a switching disc fixedly arranged on the switching shaft, the switching disc is fan-shaped, the end faces of the clockwise side and the anticlockwise side can be abutted against the upper end face of the working box body, a first water outlet positioned at the upper side of the switching shaft is arranged in the switching disc in a left-right through way, a second water outlet symmetrical to the first water outlet is arranged in the switching disc in a left-right through way around the symmetrical center line of the switching disc, the first water outlet and the second water outlet can be superposed with the water outlet cavity, a pause device is arranged in the cleaning cavity, the pause device comprises a guide rod fixedly arranged between the inner walls of the left side and the right side of the power cavity, a driven box is arranged on the guide rod in a left-right sliding mode, and a transmission cavity with a downward opening is arranged in the driven box. Rotate between the side inner wall about the transmission chamber and be equipped with the rotation sleeve, the power shaft with rotate sleeve splined connection, it is located to fix being equipped with on the rotation sleeve driven spur gear in the transmission chamber, switch on the dish left end face about switch dish central symmetry line symmetry is equipped with two opening slide openings left, be equipped with positioner in the slide opening, positioner includes that the horizontal slip sets up spacer pin in the slide opening, the spacer pin right-hand member face with fixed spacing spring that is equipped with between the slide opening right side inner wall, be equipped with the spacing hole of opening right on the work box right-hand member face, the spacer pin left end can stretch into under spacing spring's the spring action thereby limit in the spacing hole the rotation of switching dish.

Wherein, the circulating device also comprises a piston rod fixedly arranged on the upper end surface of the piston plate, the upper end of the piston rod extends into the power cavity, a touch plate is fixedly arranged on the upper end surface, a pressure spring is fixedly arranged between the lower end surface of the touch plate and the lower inner wall of the power cavity, an annular balance groove is arranged between the upper inner wall of the pressure cavity and the lower inner wall of the power cavity in a through manner, a heat dissipation cavity is arranged between the right inner wall of the power cavity and the right end surface of the working box body in a through manner, a dust filter plate is fixedly arranged on the right inner wall of the heat dissipation cavity, a working shaft is rotatably arranged on the left inner wall of the power cavity, a heat dissipation fan positioned in the heat dissipation cavity is fixedly arranged on the right end surface of the working shaft, a cam which is abutted against the upper end surface of the touch plate is fixedly arranged on the working shaft, and a, the working shaft is rotatably provided with a bearing block positioned in the heat dissipation cavity, the upper end surface and the lower end surface of the bearing block are vertically symmetrical and are fixedly provided with supporting rods fixedly connected with the inner wall of the corresponding side of the heat dissipation cavity, a cleaning box is connected in the cleaning cavity through screw threads, a mounting disc is fixedly arranged on the right end face of the cleaning box, a water inlet is communicated between the left end surface of the cleaning box and the right end surface of the working box body, the inner wall of the left side of the water inlet is superposed with the inner wall of the right side of the water inlet cavity, a filter screen is fixedly arranged on the inner wall of the left side of the water inlet, when the piston plate moves upwards in the pressure cavity, water enters the pressure cavity through the water inlet, the water inlet one-way valve and the water inlet cavity, when the piston plate moves downwards in the pressure cavity, water in the pressure cavity flows out through the water outlet cavity, the water outlet one-way valve, the first water outlet or the second water outlet.

Wherein, auto-change over device is still including fixed setting just be located on the switching dish excircle terminal surface the filter chamber on the switching dish symmetry central line, power chamber right side inner wall with right-hand member face of the work box link up and is equipped with the arc wall, the fixed arc pinion rack that is equipped with on the switching dish left end face, the arc pinion rack is in slide in the arc wall, when passing through the filter chamber drives the switching dish and is in when the switching epaxial rotation, the arc pinion rack will be in the arc wall to the filter chamber rotates the side.

Wherein, the pause device further comprises an adjusting shaft rotatably arranged between the inner walls of the left side and the right side of the power cavity, an adjusting straight gear is fixedly arranged on the adjusting shaft, the adjusting straight gear is meshed with the lower end surface of the arc toothed plate, a grooved pulley is fixedly arranged on the adjusting shaft, a reciprocating chute is arranged on the excircle end surface of the grooved pulley, a fixed pin is fixedly arranged on the upper end surface of the driven box and slides in the reciprocating chute, when the first water outlet and the water outlet cavity are coincided and rotated into the coincidence of the second water outlet and the water outlet cavity or the coincidence of the second water outlet and the water outlet cavity is rotated into the coincidence of the first water outlet and the water outlet cavity, the arc toothed plate rotates to drive the adjusting straight gear to just rotate for a circle, namely, the adjusting shaft and the grooved pulley rotate for a circle, and the grooved pulley rotates for a circle to drive the fixed pin through the reciprocating chute to complete a left-right reciprocating, therefore, the driven spur gear is disengaged from the driving spur gear and then is engaged again after completing a left-right reciprocating period.

Wherein, the positioning device also comprises a sliding cavity arranged in the switching disc, a sliding plate is arranged in the sliding cavity and is close to or far from the switching shaft in a sliding way, a pressing rod is fixedly arranged on the end surface of the sliding plate far away from the side of the switching shaft, the pressing rod penetrates through the filter cavity in a sliding way, a pressing spring is fixedly arranged between the end surface of the sliding plate close to the side of the switching shaft and the inner wall of the sliding cavity close to the side of the switching shaft, two threading holes are respectively arranged on the inner wall of the right side of the two sliding holes and the inner wall of the upper side of the sliding cavity in a penetrating way, a guide roller is rotatably arranged at the corner in each threading hole, a pull rope is fixedly arranged on the right end surface of the limiting pin, the pull rope passes through the threading holes on the corresponding side and bypasses the guide rollers on the corresponding side, and is finally fixedly connected with the end, the sliding plate slides towards the side close to the switching shaft, the pressing spring is compressed, the pull rope is tensioned, the pull rope pulls the limiting pin to move right, the limiting spring is compressed, if the limiting pin on one side extends into the limiting hole to limit the switching disc to rotate, the limiting pin extending into the limiting hole extends out of the limiting hole at the moment to remove the rotation limitation on the switching disc.

The invention has the beneficial effects that: the invention drives the unidirectional circulation of water flow by controlling the air pressure change through the piston plate, filters water at the water inlet, and prevents the unsmooth water flow caused by the blocking inside the pipeline, the filtering device adopts a threaded connection mode to facilitate the removal and the cleaning of the filter screen, the device also adopts a double-water-outlet rotation switching mode, so that the water pump does not need to be turned off in the process of replacing the water outlet pipeline, the water pump can automatically stop running for a period of time in the rotation switching process of the water outlet, the damage of the water pump caused by the overlarge water pressure due to no water outlet channel in the switching process is prevented, the working efficiency is improved, and simultaneously, the stability and the safety are better.

Drawings

In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure in the direction "A-A" of FIG. 1;

FIG. 3 is a schematic view of the structure in the direction "B-B" in FIG. 2;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 3;

FIG. 5 is a schematic view of the structure in the direction "D-D" in FIG. 3;

fig. 6 is an enlarged schematic view of a portion "E" in fig. 1.

Detailed Description

The invention will now be described in detail with reference to fig. 1-6, wherein for ease of description the orientations described hereinafter are now defined as follows: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a piston type water pump device convenient for replacing a water outlet pipe, which is mainly applied to the process of conveniently replacing the water outlet pipe of a piston type water pump, and the invention is further explained by combining the attached drawings of the invention:

the piston type water pump device convenient for replacing a water outlet pipe comprises a working box body 11, wherein a power cavity 49 is arranged in the working box body 11, a motor 24 is fixedly arranged on the inner wall of the right side of the power cavity 49, the left end of the motor 24 is in power connection with a power shaft 19 which is rotationally connected with the inner wall of the left side of the power cavity 49, a pressure cavity 53 is arranged in the working box body 11, a circulating device 901 is arranged in the pressure cavity 53, the circulating device 901 comprises a piston plate 52 which is arranged in the pressure cavity 53 in a vertical sliding mode, a water outlet cavity 54 is arranged on the right end face of the working box body 11 and communicated with the inner wall of the lower side of the pressure cavity 53, a one-way water outlet one-way valve 12 is arranged in the water outlet cavity 54, a cleaning cavity 47 with a right opening is arranged on the right end face of the working box body 11, a water inlet, a water inlet one-way valve 48 for one-way water inlet is arranged in the water inlet cavity 50, a switching shaft 37 is rotatably arranged on the right end face of the working box body 11, a switching device 902 is arranged on the switching shaft 37, the switching device 902 comprises a switching disc 36 fixedly arranged on the switching shaft 37, the switching disc 36 is fan-shaped, the end faces of the clockwise side and the anticlockwise side can be abutted against the upper end face of the working box body 11, a first water outlet 34 positioned on the upper side of the switching shaft 37 is arranged in a left-right through mode on the switching disc 36, a second water outlet 55 symmetrical to the first water outlet 34 is arranged in the left-right through mode on the switching disc 36 about the symmetrical central line of the switching disc 36, the first water outlet 34 and the second water outlet 55 can be superposed with the water outlet cavity 54, a pause device 903 is arranged in the cleaning cavity 47, and the pause device 903 comprises a guide rod 20 fixedly arranged between the left inner wall and, the guide rod 20 is provided with a driven box 64 in a left-right sliding mode, and a transmission cavity 62 with a downward opening is formed in the driven box 64. It is equipped with rotation sleeve 66 to rotate between the inner wall of the left and right sides of transmission chamber 62, power shaft 19 with rotate sleeve 66 splined connection, it is located to fix being equipped with on the rotation sleeve 66 driven spur gear 65 in the transmission chamber 62, it is equipped with two opening sliding holes 30 to the left about switching dish 36 central symmetry line symmetry on the left end face of switching dish 36, be equipped with positioner 904 in the sliding hole 30, positioner 904 includes that the horizontal slip sets up spacing pin 29 in the sliding hole 30, spacing pin 29 right-hand member face with it is equipped with spacing spring 31 to fix between the inner wall of the right side of sliding hole 30, be equipped with opening spacing hole 28 to the right on the right end face of work box 11, spacing pin 29 left end can stretch into under the spring action of spacing spring 31 thereby restrict switching dish 36's rotation in the spacing hole 28.

According to the embodiment, the circulation device 901 is described in detail below, the circulation device 901 further includes a piston rod 13 fixedly disposed on the upper end surface of the piston plate 52, the upper end of the piston rod 13 extends into the power cavity 49, the upper end surface of the piston rod is fixedly provided with a touch panel 15, a pressure spring 14 is fixedly disposed between the lower end surface of the touch panel 15 and the lower inner wall of the power cavity 49, an annular balance groove 51 is disposed between the upper inner wall of the pressure cavity 53 and the lower inner wall of the power cavity 49 in a penetrating manner, a heat dissipation cavity 38 is disposed between the right inner wall of the power cavity 49 and the right end surface of the working box 11 in a penetrating manner, a dust filter plate 41 is fixedly disposed on the right inner wall of the heat dissipation cavity 38, the inner wall of the left side of the power cavity 49 is rotatably provided with a working shaft 17, the right end surface of the working shaft 17 is fixedly provided with a heat dissipation fan 40 disposed in the heat dissipation cavity 38, the working shaft 17 is fixedly, the fixed initiative spur gear 18 that be equipped with on the working shaft 17 can with driven spur gear 65 meshing, it is equipped with to rotate on the working shaft 17 and is located the bearing axle piece 39 in the heat dissipation chamber 38, the upper and lower symmetry on the terminal surface of bearing axle piece 39 and fixed be equipped with the bracing piece 42 that heat dissipation chamber 38 corresponds side inner wall fixed connection, clearance chamber 47 internal thread connection is equipped with clearance case 43, the fixed mounting disc 44 that is equipped with on the clearance case 43 right-hand member face, clearance case 43 left end face with it is equipped with water inlet 45 to link up between the work box 11 right-hand member face, water inlet 45 left side inner wall with intake chamber 50 right side inner wall coincidence, the fixed filter screen 46 that is equipped with on the inner wall of water inlet 45 left side, work as piston plate 52 is in when moving up in the pressure chamber 53, water passes through water inlet 45, the check valve 48 of intaking, intake chamber 50 enters into in the pressure chamber 53, when the piston plate 52 moves down in the pressure chamber 53, the water in the pressure chamber 53 flows out through the water outlet chamber 54, the water outlet check valve 12, the first water outlet 34 or the second water outlet 55.

According to an embodiment, the switching device 902 is described in detail below, the switching device 902 further includes a filter cavity 57 fixedly disposed on an outer circumferential end surface of the switching plate 36 and located on a symmetric center line of the switching plate 36, an arc-shaped groove 27 is disposed through a right end surface of the working box 11 and an inner wall of a right side of the power cavity 49, an arc-shaped toothed plate 26 is fixedly disposed on a left end surface of the switching plate 36, the arc-shaped toothed plate 26 slides in the arc-shaped groove 27, and when the switching plate 36 is driven by the filter cavity 57 to rotate on the switching shaft 37, the arc-shaped toothed plate 26 rotates toward a rotation side of the filter cavity 57 in the arc-shaped groove 27.

According to an embodiment, the following detailed description is provided for the pause device 903, the pause device 903 further includes an adjusting shaft 21 rotatably disposed between the inner walls of the left and right sides of the power cavity 49, an adjusting spur gear 25 is fixedly disposed on the adjusting shaft 21, the adjusting spur gear 25 is engaged with the lower end surface of the arc-shaped toothed plate 26, a grooved pulley 22 is fixedly disposed on the adjusting shaft 21, a reciprocating chute 23 is disposed on the outer circumferential end surface of the grooved pulley 22, a fixing pin 63 is fixedly disposed on the upper end surface of the driven box 64, the fixing pin 63 slides in the reciprocating chute 23, when the first water outlet 34 and the water outlet cavity 54 rotate in a superposition manner that the second water outlet 55 and the water outlet cavity 54 coincide or the second water outlet 55 and the water outlet cavity 54 rotate in a superposition manner that the first water outlet 34 and the water outlet cavity 54 coincide, the arc-shaped toothed plate 26 rotates to drive the adjusting spur gear 25 to rotate exactly one circle, that is, the adjustment shaft 21 and the grooved pulley 22 rotate once, and the grooved pulley 22 rotates once to drive the fixed pin 63 to complete a left-right reciprocating cycle through the reciprocating chute 23, so that the driven spur gear 65 completes a left-right reciprocating cycle, and is disengaged from the driving spur gear 18 and then re-engaged.

According to the embodiment, the positioning device 904 is described in detail below, the positioning device 904 further includes a slide cavity 59 disposed in the switching plate 36, a slide plate 58 is slidably disposed in the slide cavity 59 near or far from the switching shaft 37, a pressing rod 56 is fixedly disposed on the slide plate 58 far from the side end surface of the switching shaft 37, the pressing rod 56 slidably penetrates through the filter cavity 57, a pressing spring 60 is fixedly disposed between the slide plate 58 near the side end surface of the switching shaft 37 and the slide cavity 59 near the inner wall of the switching shaft 37, two threading holes 33 are respectively disposed on the right inner wall of the two slide holes 30 and the upper inner wall of the slide cavity 59, a guide roller 61 is rotatably disposed at an inner corner of the threading hole 33, a pull rope 32 is fixedly disposed on the right end surface of the stopper pin 29, the pull rope 32 passes through the threading hole 33 on the corresponding side and bypasses the guide roller 61 on the corresponding side, finally, the slide plate 58 is fixedly connected with the end face of the side of the slide plate 58 far away from the switching shaft 37, when the pressing rod 56 is pressed to slide towards the side close to the switching shaft 37, the slide plate 58 slides towards the side close to the switching shaft 37, the pressing spring 60 is compressed, the pulling rope 32 is tensioned, the pulling rope 32 pulls the limiting pin 29 to move right, the limiting spring 31 is compressed, if the limiting pin 29 at one side extends into the limiting hole 28 to limit the switching disc 36 to rotate, the limiting pin 29 extending into the limiting hole 28 at the moment extends out from the limiting hole 28 to remove the rotation limitation on the switching disc 36.

The following will describe in detail the usage steps of a piston type water pump device convenient for replacing the water outlet pipe with reference to fig. 1 to 6:

initially, the left end face of the cleaning box 43 abuts against the left inner wall of the cleaning cavity 47, the left inner wall of the water inlet 45 coincides with the water inlet cavity 50, the first water outlet 34 coincides with the water outlet cavity 54, the counterclockwise end face of the switching plate 36 abuts against the upper end face of the working box body 11, the side end face of the sliding plate 58 away from the switching shaft 37 abuts against the inner wall of the sliding cavity 59 away from the switching shaft 37, the pressing spring 60 is not compressed, the pulling rope 32 is in a loose state, the clockwise limiting pin 29 extends into the limiting hole 28 under the elastic force of the corresponding side limiting spring 31, so that the rotation of the switching plate 36 is limited, the counterclockwise limiting pin 29 abuts against the right end face of the working box body 11 under the elastic force of the corresponding side limiting spring 31, the transmission cavity 62 is located at the leftmost side in the reciprocating chute 23, and the driven spur gear 65 is meshed with the driving spur gear;

when the water purifier works, the inner wall on the right side of the first water outlet 34 is in threaded connection with a water outlet pipeline, the inner wall on the right side of the water inlet 45 is in threaded connection with a water inlet pipeline, the motor 24 is started, the power shaft 19, the rotating sleeve 66 and the driven spur gear 65 rotate, the driven spur gear 65 rotates to drive the driving spur gear 18, the working shaft 17, the cam 16 and the heat dissipation fan 40 to rotate, the cam 16 rotates to abut against the contact plate 15 to move up and down under the elastic force of the pressure spring 14, so that the piston plate 52 moves up and down in the pressure cavity 53, when the piston plate 52 moves up in the pressure cavity 53, water enters the pressure cavity 53 through the water inlet 45, the water inlet check valve 48 and the water inlet cavity 50, when the piston plate 52 moves down in the pressure cavity 53, the water in the pressure cavity 53 flows out through the water outlet cavity 54, the water outlet check valve 12 and the first water outlet 34, when the water flows through the filter screen 46, impurities in the water are left in the water inlet 45, the rotation of the heat dissipation fan 40 exhausts the air to dissipate the heat of the power cavity 49, which is beneficial to the stable work of the motor 24;

during switching, a pipeline to be switched is connected to the second water outlet 55 in a threaded manner, the pressing rod 56 is pressed, the sliding plate 58 moves towards the side close to the switching shaft 37, the pressing spring 60 is compressed, the pulling rope 32 is tensioned, the pulling rope 32 pulls the limiting pin 29 to move right, the limiting spring 31 is compressed, the limiting pin 29 extends out of the limiting hole 28 to remove the rotation limitation on the switching disc 36, the filtering cavity 57 is rotated clockwise while the pressing rod 56 is kept pressed, the switching disc 36 rotates clockwise around the switching shaft 37 until the switching disc 36 abuts against the upper end face of the working box body 11 clockwise, in the rotating process of the switching disc 36, the switching disc 36 rotates to drive the arc toothed plate 26 to rotate, the arc toothed plate 26 rotates to drive the adjusting spur gear 25, the adjusting shaft 21 and the grooved pulley 22 to rotate for a circle, in the whole rotating period of the switching disc 36, the arc toothed plate 26 drives the adjusting spur gear 25 to rotate for a circle, and the grooved pulley 22 rotates for a, The driven box 64, the rotating sleeve 66 and the driven spur gear 65 complete a left-right reciprocating cycle, the driven spur gear 65 firstly moves leftwards to be disengaged from the driving spur gear 18 and then moves rightwards to be reset to be re-engaged with the driving spur gear 18, namely, when the switching disc 36 rotates, the driven spur gear 65 and the driving spur gear 18 are always in a disengaged state until the switching disc 36 rotates, the driven spur gear 65 and the driving spur gear 18 are re-engaged, when the driving spur gear 18 and the driven spur gear 65 are disengaged, the driving spur gear 18, the working shaft 17, the cam 16 and the filter screen 46 are unpowered to stop rotating, the piston plate 52 stops sliding up and down in the pressure cavity 53 to temporarily stop water circulation, the phenomenon that the water pressure of a water outlet cavity is too high due to the fact that a water outlet pipeline is not connected in the rotating process of the switching disc 36 is avoided, the stability of the device is improved, when the switching disc 36 rotates, when the pressing rod 56 is released, the sliding plate 58 is reset under the elastic force of the pressing spring 60, the pulling rope 32 is loosened again, the counterclockwise limiting pin 29 extends into the limiting hole 28 under the elastic force of the limiting spring 31 to limit the rotation of the switching disc 36, the clockwise limiting pin 29 props against the right end surface of the work box body 11 under the elastic force of the limiting spring 31, at the moment, the second water outlet 55 is overlapped with the water outlet cavity 54, the driving spur gear 18 is meshed with the driven spur gear 65 to keep the working state, and if the water outlet pipeline switching is repeatedly carried out in the subsequent work, the switching cycle can be repeated only by rotating the switching disc 36 clockwise and counterclockwise.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.

Claims

1. The utility model provides a piston pumping plant convenient to change outlet pipe, includes the work box, be equipped with the power chamber in the work box, the fixed motor that is equipped with on the inner wall of power chamber right side, motor left end power connection be equipped with power chamber left side inner wall rotates the power shaft of connecting, be equipped with pressure chamber, its characterized in that in the work box: a circulating device is arranged in the pressure cavity;

the circulating device comprises a piston plate which is arranged in the pressure cavity in an up-and-down sliding manner, a water outlet cavity is formed by the right end surface of the working box body and the inner wall of the lower side of the pressure cavity in a communicated manner, a one-way water outlet one-way valve is arranged in the water outlet cavity, a cleaning cavity with a right opening is formed in the right end surface of the working box body, a water inlet cavity is formed by the inner wall of the left side of the cleaning cavity and the inner wall of the lower side of the pressure cavity in a communicated manner, a one-way water inlet one-way valve is arranged in the water inlet cavity, and;

a switching device is arranged on the switching shaft and comprises a switching disc fixedly arranged on the switching shaft, the switching disc is fan-shaped, the end faces of the clockwise side and the anticlockwise side of the switching disc can be abutted against the upper end face of the working box body, a first water outlet positioned on the upper side of the switching shaft is arranged in a left-right through mode through the switching disc, a second water outlet symmetrical to the first water outlet is arranged in the left-right through mode through the switching disc relative to the symmetrical center line of the switching disc, and the first water outlet and the second water outlet can be overlapped with the water outlet cavity;

a pause device is arranged in the cleaning cavity and comprises a guide rod fixedly arranged between the inner walls of the left side and the right side of the power cavity, a driven box is arranged on the guide rod in a left-right sliding mode, a transmission cavity with a downward opening is arranged in the driven box, a rotating sleeve is rotatably arranged between the inner walls of the left side and the right side of the transmission cavity, the power shaft is connected with the rotating sleeve through a spline, a driven straight gear positioned in the transmission cavity is fixedly arranged on the rotating sleeve, and two sliding holes with leftward openings are symmetrically arranged on the left end face of the switching plate relative to the central symmetry line of the switching plate;

the sliding hole is internally provided with a positioning device, the positioning device comprises a limiting pin which is arranged in the sliding hole in a sliding mode in a left-right sliding mode, a limiting spring is fixedly arranged between the right end face of the limiting pin and the inner wall of the right side of the sliding hole, a limiting hole with a right opening is arranged on the right end face of the working box body, and the left end of the limiting pin can stretch into the limiting hole under the elastic action of the limiting spring to limit the rotation of the switching plate.

2. The piston type water pump device convenient for replacing the water outlet pipe as claimed in claim 1, wherein: the circulating device also comprises a piston rod fixedly arranged on the upper end surface of the piston plate, the upper end of the piston rod extends into the power cavity, a touch plate is fixedly arranged on the upper end surface, a pressure spring is fixedly arranged between the lower end surface of the touch plate and the lower inner wall of the power cavity, an annular balance groove is arranged between the upper inner wall of the pressure cavity and the lower inner wall of the power cavity in a through manner, a heat dissipation cavity is arranged between the right inner wall of the power cavity and the right end surface of the working box body in a through manner, a dust filter plate is fixedly arranged on the right inner wall of the heat dissipation cavity, a working shaft is rotatably arranged on the left inner wall of the power cavity, a heat dissipation fan positioned in the heat dissipation cavity is fixedly arranged on the right end surface of the working shaft, a cam which is in touch with the upper end surface of the touch plate is fixedly arranged on the working shaft, and, rotate on the working shaft to be equipped with and be located the bearing piece of heat dissipation intracavity, bearing piece about the terminal surface from top to bottom the symmetry and fixed be equipped with heat dissipation chamber corresponds side inner wall fixed connection's bracing piece, clearance intracavity threaded connection is equipped with the clearance case, the fixed mounting disc that is equipped with on the clearance case right-hand member face, clearance case left end face with it is equipped with the water inlet to link up between the work box right-hand member face, water inlet left side inner wall with intake chamber right side inner wall coincidence, the fixed filter screen that is equipped with on the inner wall of water inlet left side, work as the piston plate is in when shifting up in the pressure chamber, water passes through the water inlet intake check valve the intake chamber enters into in the pressure chamber.

3. The piston type water pump device convenient for replacing the water outlet pipe as claimed in claim 1, wherein: the switching device further comprises a filter cavity which is fixedly arranged on the excircle end face of the switching disc and is positioned on the symmetrical center line of the switching disc, the inner wall of the right side of the power cavity is communicated with the right end face of the working box body to form an arc-shaped groove, an arc-shaped toothed plate is fixedly arranged on the left end face of the switching disc, and the arc-shaped toothed plate slides in the arc-shaped groove.

4. The piston type water pump device convenient for replacing the water outlet pipe as claimed in claim 3, wherein: the pause device is still including rotating the setting and being in regulating spindle between the side inner wall about the power cavity, the fixed regulation straight-teeth gear that is equipped with on the regulating spindle, adjust the straight-teeth gear with the terminal surface meshing is connected under the arc pinion rack, the fixed sheave that is equipped with on the regulating spindle, be equipped with reciprocal spout on the sheave excircle terminal surface, the fixed pin that is equipped with on the driven box up end, the fixed pin is in slide in the reciprocal spout.

5. The piston type water pump device convenient for replacing the water outlet pipe as claimed in claim 3, wherein: the positioning device further comprises a sliding cavity arranged in the switching disc, a sliding plate is arranged in the sliding cavity and close to or far away from the switching shaft in a sliding mode, a pressing rod is fixedly arranged on the end face of the side of the switching shaft far away from the sliding plate, the pressing rod penetrates through the filtering cavity in a sliding mode, the sliding plate is close to the end face of the side of the switching shaft and close to the sliding cavity, a pressing spring is fixedly arranged between the inner walls of the side of the switching shaft, two inner walls of the right side of the sliding hole and the inner wall of the upper side of the sliding cavity are respectively provided with two threading holes in a penetrating mode, a guide roller is arranged at the corner of each threading hole in a rotating mode, a pull rope is fixedly arranged on the right end face of the limiting pin and penetrates through the corresponding side of the threading holes and bypasses.