CN215927686U

CN215927686U - Plunger pump structure for sprayer

Info

Publication number: CN215927686U
Application number: CN202121657098.XU
Authority: CN
Inventors: 王玲花
Original assignee: Taizhou Luqiao Huayou Machinery Co ltd
Current assignee: Taizhou Luqiao Huayou Machinery Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-03-01
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a plunger pump structure used on a sprayer, which comprises a micro motor and a plunger pump assembly, wherein the plunger pump assembly comprises a pump shell, a pump core and a pump cover, a transmission mounting hole is formed in the pump shell, an eccentric transmission part is arranged in the transmission mounting hole, one end of the eccentric transmission part is connected with the pump core, and the other end of the eccentric transmission part is in transmission connection with the micro motor; the eccentric driving part comprises a middle positioning disc, a central shaft and an eccentric shaft, wherein the central shaft and the eccentric shaft are respectively arranged on two sides of the middle positioning disc, the eccentric driving part is connected with the pump shell through the middle positioning disc, the central shaft is in transmission connection with the micro motor, the eccentric shaft is connected with the pump core, and the micro motor rotates to drive the pump core to move up and down through the eccentric driving part to work. The utility model greatly reduces the volume and the weight of the power source connecting structure used by connecting the plunger pump, and is very convenient to use when being applied to a sprayer.

Description

Plunger pump structure for sprayer

Technical Field

The utility model relates to the technical field of medical instruments, in particular to a plunger pump structure for a sprayer.

Background

China is a big agricultural country, agricultural disease and pest control mainly depends on pesticide control, and a sprayer is one of the most widely applied pesticide spraying devices at present. The traditional solution driver source of the sprayer mostly adopts a traditional hand lever type, and the traditional sprayer mostly adopts micro diesel oil or a gasoline engine as the driver source of the solution due to inconvenient operation.

The micro diesel oil or gasoline engine drives the plunger pump to pressurize and spray out solution in the sprayer, so that the sprayer is heavy as a whole, and the micro diesel oil or gasoline engine and the plunger pump are connected by a cam structure, so that the structure is complex; thereby causing the existing sprayer with the structure to be heavy and inconvenient to use.

Disclosure of Invention

The present invention has been made to solve the above-mentioned problems occurring in the prior art, and an object of the present invention is to provide a plunger pump structure for use in a sprayer.

In order to solve the technical problems, the technical scheme of the utility model is as follows: a plunger pump structure used on a sprayer comprises a micro motor and a plunger pump assembly, wherein the plunger pump assembly comprises a pump shell, a pump core and a pump cover, a transmission mounting hole is formed in the pump shell, an eccentric transmission part is arranged in the transmission mounting hole, one end of the eccentric transmission part is connected with the pump core, and the other end of the eccentric transmission part is in transmission connection with the micro motor; the eccentric driving part comprises a middle positioning disc, a central shaft and an eccentric shaft, wherein the central shaft and the eccentric shaft are respectively arranged on two sides of the middle positioning disc, the eccentric driving part is connected with the pump shell through the middle positioning disc, the central shaft is in transmission connection with the micro motor, the eccentric shaft is connected with the pump core, and the micro motor rotates to drive the pump core to move up and down through the eccentric driving part to work.

In the above plunger pump structure for a sprayer, the micro motor comprises a housing, a rotor assembly, a motor shaft and an end cover; one side of the end cover is connected with the shell, the other side of the end cover is connected with the fixed cover, and a speed reduction transmission assembly is arranged between the end cover and the fixed cover; the speed reduction transmission assembly comprises a motor shaft gear, an eccentric shaft gear and a speed reduction gear, the motor shaft is in transmission connection with the eccentric transmission part through the speed reduction transmission assembly, and a gear shaft for positioning and installing the speed reduction gear is arranged between the end cover and the fixed cover.

In the plunger pump structure for the sprayer, the central shaft of the eccentric transmission part penetrates through the fixed cover to be connected with the eccentric shaft gear, bearings are respectively arranged between the middle positioning disc of the eccentric transmission part and the pump shell, between the eccentric shaft and the pump core and between the central shaft and the fixed cover, and the end cover and the fixed cover are also respectively provided with a bearing for correspondingly mounting the gear shaft.

In the plunger pump structure for the sprayer, the side face of the fixed cover corresponding to the pump shell is provided with the positioning boss, and the positioning boss is matched with the transmission mounting hole in the side face of the pump shell.

In the plunger pump structure for the sprayer, the pump shell is also provided with a switch mounting hole communicated with the interior of the pump shell, a pressure switch is mounted at the switch mounting hole and comprises a sealing inner base cover, a sealing outer base, a positioning movable base, a spring and a fixed base cover; the linkage is realized through the water pressure in the pump case between sealed inner base lid, the location removal seat, and the spring provides the power that the location removed seat removed that resets, pressure switch side-mounting opens and stops the switch, and the button switch who opens and stops in the switch passes fixed base lid and the location removes the seat and supports and lean on.

In the plunger pump structure for the sprayer, the switch mounting hole is internally provided with the mounting chute, the sealing inner seat cover slides in the mounting chute, the inner side and the outer side of the sealing outer seat are respectively in sealing connection with the positioning movable seat and the fixed seat cover, and the fixed seat cover is fixedly and hermetically connected with the pump shell.

In the plunger pump structure for the sprayer, the spring is located in the positioning moving seat, and the spring positioning seat is arranged in the positioning moving seat.

The utility model has the beneficial effects that:

the utility model designs and drives the plunger pump assembly to work by using the micro motor, and the micro motor is used as a power source, so that the structural volume is greatly reduced, and the structural design of transmission between the micro motor and the plunger pump is simple; thereby greatly reducing the volume and the weight on the whole and being very convenient to use when being applied to a sprayer.

The micro motor starting and stopping device is provided with the pressure switch, the starting and stopping switch can control the starting and stopping of the micro motor according to the pressurizing pressure in the pump shell, the plunger pump can be enabled to keep providing proper pressurizing pressure, meanwhile, the starting and stopping of the micro motor can be automatically controlled according to the pressure, and the power consumption of the micro motor is saved.

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 portion A of FIG. 2;

fig. 4 is an enlarged view of a portion B of fig. 2.

Detailed Description

The utility model is further elucidated with reference to the accompanying drawings.

Referring to fig. 1 to 4, the present invention provides a plunger pump structure for a sprayer, including a micro motor 1 and a plunger pump assembly 2, wherein the plunger pump assembly 2 includes a pump case 3, a pump core 4 and a pump cover 5, the pump case 3 is provided with a transmission mounting hole 6, an eccentric transmission member 7 is arranged in the transmission mounting hole 6, one end of the eccentric transmission member 7 is connected with the pump core 4, and the other end is in transmission connection with the micro motor 1; the eccentric transmission part 7 comprises a middle positioning disc 8, and a central shaft 9 and an eccentric shaft 10 which are respectively arranged at two sides of the middle positioning disc 8, the eccentric transmission part 7 is connected with the pump shell 3 through the middle positioning disc 8, the central shaft 9 is in transmission connection with the micro motor 1, and the eccentric shaft 10 is connected with the pump core 4; when the pump is used, the micro motor 1 drives the eccentric transmission member 7 to rotate, and the eccentric shaft 10 on the eccentric transmission member 7 drives the pump core 4 to reciprocate up and down, so that the pump core 4 completes pressurization work in the pump shell 3.

Further, the micro motor 1 includes a housing 11, a rotor assembly 12, a motor shaft 13, and an end cover 14; one side of the end cover 14 is connected with the shell 11, the other side of the end cover is connected with a fixed cover 15, and a speed reduction transmission assembly is arranged between the end cover 14 and the fixed cover 15; the speed reduction transmission assembly comprises a motor shaft gear 16 arranged on a motor shaft 13, an eccentric shaft gear 17 arranged on the central shaft 9 and a speed reduction gear 18 in transmission connection with the motor shaft gear 16 and the eccentric shaft gear 17 respectively, and a gear shaft 19 for positioning and installing the speed reduction gear 18 is arranged between the end cover 14 and the fixed cover 15; the speed reducing transmission component enables the transmission of the motor shaft 13 to transmit larger and better transmission torque to the eccentric transmission part 7.

Specifically, the central shaft 9 of the eccentric transmission member 7 passes through the fixed cover 15 to be connected with the eccentric shaft gear 17, bearings 20 are respectively arranged between the middle positioning plate 8 of the eccentric transmission member 7 and the pump shell 3, between the eccentric shaft 10 and the pump core 4, and between the central shaft 9 and the fixed cover 15, and the end cover 14 and the fixed cover 15 are also respectively provided with a bearing 20 correspondingly provided with a gear shaft 19.

Furthermore, a positioning boss 21 is arranged on the side surface of the fixed cover 15 corresponding to the pump shell 3, and the positioning boss 21 is matched with the transmission mounting hole 6 on the side surface of the pump shell 3; the positioning boss 21 can better ensure stable transmission positioning between the micro motor 1 and the pump core 4 of the plunger pump assembly 2.

Further, a switch mounting hole 22 communicated with the interior of the pump shell 3 is further formed in the pump shell 3, a pressure switch 23 is mounted in the switch mounting hole 22, and the pressure switch 23 comprises a sealing inner seat cover 24, a sealing outer seat 25, a positioning moving seat 26, a spring 27 and a fixed seat cover 28; the spring 27 provides a force for resetting and moving the positioning moving seat 26, the side surface of the pressure switch 23 is provided with a start-stop switch 29, the start-stop switch 29 is arranged on the side surface of the fixed seat cover 28, a button switch 30 in the start-stop switch 29 penetrates through the fixed seat cover 28 to abut against the positioning moving seat 26, when the pump shell is used, water pressure in the pump shell 3 acts on the sealing inner seat cover 24 to move the sealing inner seat cover, and the sealing inner seat cover 24 and the positioning moving seat 26 are linked through the water pressure in the pump shell 3, so that the positioning moving seat 26 is pushed to move by the movement of the sealing inner seat cover 24, and the spring 27 is compressed in the process; the positioning moving seat 26 moves to press the button switch 30 in the start-stop switch 29, at this time, the start-stop switch 29 controls the micro motor 1 to stop working, and after the pressure in the pump shell 3 is reduced, the spring 27 provides a force for resetting and moving the positioning moving seat 26, so that the positioning moving seat 26 releases the pressing of the button switch 30 in the start-stop switch 29, and the micro motor 1 is controlled to start working again;

the elastic deformation force of the spring 27 is selected and set according to the pressurizing pressure in the pump shell 3, the start-stop switch 29 is in circuit connection with the micro motor 1, the start-stop switch 29 can control the start-stop work of the micro motor 1 according to the pressurizing pressure in the pump shell 3, the plunger pump assembly 2 can be enabled to keep providing proper pressurizing pressure, meanwhile, the start-stop of the micro motor 1 can be automatically controlled according to the pressure, and the power consumption of the micro motor is saved.

Furthermore, an installation sliding groove 31 is arranged in the switch installation hole 22, the sealing inner seat cover 24 slides in the installation sliding groove 31, the inner side and the outer side of the sealing outer seat 25 are respectively in sealing connection with the positioning movable seat 26 and the fixed seat cover 28, and the fixed seat cover 28 is fixedly in sealing connection with the pump shell 3; the sealing performance of the connection between the pressure switch 23 and the pump shell 3 is ensured while the automatic start-stop control of the micro motor 1 is realized.

Further, in order to improve the stability of the installation of the spring 27 and the stability of the movement of the movable positioning seat 26, the spring 27 is located in the movable positioning seat 26, and a spring positioning seat 32 is provided in the movable positioning seat 26.

The present invention has been described in detail with reference to the embodiments of the present invention, which are provided for illustration of a plunger pump structure for a sprayer, and the principles and embodiments of the present invention are described herein with reference to specific embodiments, which are provided for understanding the technical solutions disclosed herein; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. A plunger pump structure for a sprayer, characterized in that: the plunger pump assembly comprises a pump shell, a pump core and a pump cover, wherein a transmission mounting hole is formed in the pump shell, an eccentric transmission part is arranged in the transmission mounting hole, one end of the eccentric transmission part is connected with the pump core, and the other end of the eccentric transmission part is in transmission connection with the micro motor; the eccentric driving part comprises a middle positioning disc, a central shaft and an eccentric shaft, wherein the central shaft and the eccentric shaft are respectively arranged on two sides of the middle positioning disc, the eccentric driving part is connected with the pump shell through the middle positioning disc, the central shaft is in transmission connection with the micro motor, the eccentric shaft is connected with the pump core, and the micro motor rotates to drive the pump core to move up and down through the eccentric driving part to work.

2. A plunger pump structure for a sprayer according to claim 1, wherein: the micro motor comprises a shell, a rotor assembly, a motor shaft and an end cover; one side of the end cover is connected with the shell, the other side of the end cover is connected with the fixed cover, and a speed reduction transmission assembly is arranged between the end cover and the fixed cover; the speed reduction transmission assembly comprises a motor shaft gear, an eccentric shaft gear and a speed reduction gear, the motor shaft is in transmission connection with the eccentric transmission part through the speed reduction transmission assembly, and a gear shaft for positioning and installing the speed reduction gear is arranged between the end cover and the fixed cover.

3. A plunger pump structure for a sprayer according to claim 2, wherein: the central shaft of the eccentric transmission part penetrates through the fixed cover to be connected with the eccentric shaft gear, bearings are respectively arranged between the middle positioning disc of the eccentric transmission part and the pump shell, between the eccentric shaft and the pump core and between the central shaft and the fixed cover, and the end cover and the fixed cover are also respectively provided with a bearing for correspondingly installing the gear shaft.

4. A plunger pump structure for a sprayer according to claim 3, wherein: and the side surface of the fixed cover corresponding to the pump shell is provided with a positioning boss, and the positioning boss is matched with a transmission mounting hole in the side surface of the pump shell.

5. A plunger pump structure for a sprayer according to any one of claims 1 to 4, wherein: the pump shell is also provided with a switch mounting hole communicated with the interior of the pump shell, a pressure switch is mounted at the switch mounting hole and comprises a sealing inner base cover, a sealing outer base, a positioning movable base, a spring and a fixed base cover; the linkage is realized through the water pressure in the pump case between sealed inner base lid, the location removal seat, and the spring provides the power that the location removed seat removed that resets, pressure switch side-mounting opens and stops the switch, and the button switch who opens and stops in the switch passes fixed base lid and the location removes the seat and supports and lean on.

6. A plunger pump structure for sprayer according to claim 5, characterized in that: the switch mounting hole is internally provided with a mounting chute, the sealing inner seat cover slides in the mounting chute, the inner side and the outer side of the sealing outer seat are respectively in sealing connection with the positioning movable seat and the fixed seat cover, and the fixed seat cover is fixedly and hermetically connected with the pump shell.

7. A plunger pump structure for sprayer according to claim 5, characterized in that: the spring is arranged in the positioning moving seat, and a spring positioning seat is arranged in the positioning moving seat.