CN217783749U

CN217783749U - Plastic pump with direct current motor

Info

Publication number: CN217783749U
Application number: CN202221707677.5U
Authority: CN
Inventors: 孙伟国; 张时琨; 董乾清; 严锋杰; 杨川
Original assignee: NINGBO FUSLE MECHANICAL MANUFACTURING CO LTD
Current assignee: NINGBO FUSLE MECHANICAL MANUFACTURING CO LTD
Priority date: 2022-07-01
Filing date: 2022-07-01
Publication date: 2022-11-11
Anticipated expiration: 2032-07-01

Abstract

The application discloses direct current motor plastic pump, including the pump body that has delivery port and water storage chamber, still install control switch and overflow valve in the pump body, the case of overflow valve passes through the adjustable shelf and is connected with control switch, the pump body on install the knob, the rotatory adjustable shelf that drives of knob remove, the delivery port in the predetermined limit removes with the plug is driven to the pressure differential in water storage chamber. By arranging the switch structure, the functions of active control and feedback control are realized.

Description

Plastic pump with direct current motor

Technical Field

The application relates to the technical field of high-pressure cleaning machines, in particular to a direct-current motor plastic pump.

Background

The high-pressure cleaning machine is a machine which uses a power device to enable a high-pressure plunger pump to generate high-pressure water to wash the surface of an object. It can peel off and wash away dirt to clean the surface of an object. Because the high-pressure water column is used for cleaning dirt, the high-pressure cleaning is one of scientific, economic and environment-friendly cleaning modes.

The plunger pump is an important device for distributing cleaning fluid in a high-pressure cleaning machine, and in the prior art, the plunger pump comprises a pump shell, a water inlet is formed in one side of the pump shell, a water outlet is formed in the other side of the pump shell, a plunger is arranged on one side of the pump shell, and the water inlet and the water outlet are communicated or separated through the operation of the plunger. Because the series motor is low in cost, the series motor is adopted as a drive on the plastic pump, and the high-pressure requirement of the cleaning machine can be met.

Chinese patent application "high-pressure plunger pump with differential pressure type overflow valve", application (patent) No.: CN202121291048.4, discloses a pharmaceutical composition comprising: the pump shell is provided with a water storage cavity and a water outlet; the overflow valve is arranged in the pump shell; the main valve is arranged in the pump shell; when the overflow valve is opened, the water flow at the water outlet is led into the water storage cavity; when the main valve is opened, the water flow in the water storage cavity is guided to the water outlet. The overflow valve comprises a valve seat, a valve cavity is arranged in the valve seat, an overflow hole is formed in the valve seat, and the valve cavity is communicated with the water storage cavity through the overflow hole. Namely, the valve cavity of the overflow valve is always communicated with the water storage cavity, and the pressure relief of the overflow valve is equal to the pressure difference between the water pressure at the water outlet of the overflow valve and the water storage cavity. And a main valve is additionally arranged at the water outlet to stabilize the water pressure between the main valve and the overflow valve.

In controlling the plunger pump, two switches are usually provided, one main switch and one control switch for the control system. Two switches, especially control switches, are arranged on the plastic pump, so that the occupied space is large.

SUMMERY OF THE UTILITY MODEL

The technical problem that this application will be solved provides a direct current motor plastic pump, through setting up a switch structure, has realized the function of initiatively controlling and feedback control.

The technical scheme adopted by the application is as follows: a direct current motor plastic pump comprises a pump body with a water outlet and a water storage cavity, a control switch and an overflow valve are further mounted in the pump body, a valve core of the overflow valve is connected with the control switch through a movable frame, a knob is mounted on the pump body, the knob rotates to drive the movable frame to move, and the valve core is driven by differential pressure of the water outlet and the water storage cavity within a preset range to move.

Compared with the prior art, the overflow valve has the advantages that the overflow valve and the control switch are correspondingly adjusted at first, and the movable frame is additionally arranged, so that the valve core of the overflow valve can be connected with the control switch through the movable frame. In the pump body of the plastic pump of the high-pressure cleaning machine, the valve core part is communicated with the water outlet and the water storage cavity. Correspondingly, when the pressure difference between the water outlet and the water storage cavity reaches a preset range, the pressure difference can push the valve core to move. The moving valve core can react to the control switch through the movable frame. The function of controlling the switch by the pressure difference feedback is realized. Secondly, this application installation knob on the pump body, the removal of drive adjustable shelf through the rotation of knob, the adjustable shelf that removes again acts on case and/or control switch. The control of the user on the preset states of the control switch and the overflow valve is realized. To sum up, this application adopts a switch structure through addding a adjustable shelf of being connected with the knob to and the corresponding relative position who sets up control switch and overflow valve, plays the function of initiatively controlling and controlling with the feedback.

In some embodiments of the present application, the relief valve further includes a valve rod, the valve rod is coaxially disposed with the valve core, and the valve core is in contact connection with the movable frame through the valve rod. Namely, the valve core moves to drive the movable frame to move through the valve rod. The corresponding movable frame moves to drive the valve rod to move, so that the position of the valve rod is changed.

In some embodiments of the present application, the movable frame includes an inclined wall surface, and one end of the valve stem is in contact with the inclined wall surface.

The movable frame comprises a first wall surface, the first wall surface and the inclined wall surface are arranged oppositely, and the control switch is arranged close to the first wall surface. The valve body in be provided with the locating part, the locating part restriction adjustable shelf can only move to the direction of being close to or keeping away from control switch.

When the valve rod pushes the movable frame to move, the first wall surface is stressed to be decomposed, and the partially decomposed stress pushes the movable frame to move towards the direction close to or far away from the control switch.

In some embodiments of the present application, the knob is connected to the cam through a rotating rod, and the knob is rotated to rotate the cam through the rotating rod.

The cam rotates until the flange of the cam acts on the inner wall surface of the movable frame. The rotating cam drives the movable frame to move.

In some embodiments of the present application, the movable frame is a trapezoid frame structure, the movable frame includes a first side wall, a second side wall, a third side wall and a fourth side wall, and the first side wall, the second side wall, the third side wall and the fourth side wall are connected end to form the trapezoid frame structure; the first wall surface is positioned on the first side wall, and the inclined wall surface is positioned on the third side wall.

A blocking wall is arranged in the movable frame and is close to the third side wall of the movable frame, the blocking wall, the first side wall, the second side wall and the fourth side wall form a rectangular space, and the cam is located in the rectangular space.

Specifically, when the cam acts on the blocking wall, the movable frame is pushed to move towards one side far away from the control switch; when the cam acts on the first side wall, the movable frame is pushed to move towards one side close to the control switch.

Furthermore, the axle center of the cam is arranged close to the second side wall, and the second side wall limits the rotation angle of the cam to be 180-220 degrees.

The pump body on be provided with the oral siphon and the outlet pipe that communicate with the water storage chamber respectively, the water storage chamber is connected with the outlet pipe through a plurality of subchannel, is equipped with the plunger that is used for controlling the break-make on every subchannel, the delivery port set up on the outlet pipe, the outlet pipe on set up the water inlet with the water storage chamber intercommunication, water inlet and delivery port between be provided with the main valve, the fluid that gets into the outlet pipe by the water inlet reaches the delivery port through the main valve.

The overflow valve is arranged in the water outlet pipe.

The overflow valve comprises a valve seat, a valve cavity is arranged in the valve seat, an overflow hole is formed in the valve seat, and the valve cavity is communicated with the water storage cavity through the overflow hole. Namely, the valve cavity of the overflow valve is always communicated with the water storage cavity, and the pressure relief of the overflow valve is equal to the pressure difference between the water pressure at the water outlet of the overflow valve and the water storage cavity. Specifically, the overflow valve is communicated with the water outlet.

The valve core is arranged in the valve cavity, and a sealing ring is arranged between the periphery of the valve core and the inner wall surface of the valve cavity. The head of the valve core is communicated with the water outlet pipe, and the tail of the valve core is communicated with the overflow hole.

Furthermore, the valve rod is installed in the valve seat, one end of the valve rod is connected with the valve core, the other end of the valve rod is connected with the control switch, the valve core moves to drive the valve rod to move, and the moving valve rod controls the control switch to be turned on or turned off.

Further, a spring is arranged between the valve rod and the valve seat, and the spring provides force for returning the valve rod to the initial state. Namely, after the water pressure at the water outlet and the water pressure in the water storage cavity reach relative balance, the spring can push the valve rod to drive the valve core to return to the initial state.

This application adopts direct current motor drive pump body work.

Drawings

The present application will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the present application. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a first structural diagram of the present application;

FIG. 2 is a side view of a pump body portion of the present application;

FIG. 3 is a cross-sectional view of section AA in FIG. 2;

FIG. 4 is a cross-sectional view of section BB of FIG. 3;

fig. 5 is a partially enlarged view of the relief valve of fig. 3.

Wherein the reference numerals are specified as follows: 1. a water storage cavity; 2. a pump body; 3. a control switch; 4. an overflow valve; 5. a movable frame; 51. a first side wall; 51a, a first wall surface; 52. a second side wall; 53. a third side wall; 53a, inclined wall surface; 54. a fourth side wall; 55. a retaining wall; 6. a knob; 7. a main valve; 8. a cam; 9. a water inlet pipe; 10. a water outlet pipe; 11. a valve seat; 12. a valve cavity; 13. a valve stem; 14. a valve core; 15. an overflow aperture; 16. a seal ring; 17. a spring.

Detailed Description

The present application will now be described in detail with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.

A dc motor plastic pump, an embodiment of the present application is shown in fig. 1: the water storage pump comprises a pump body 2 with a water outlet and a water storage cavity 1, wherein a control switch 3 and an overflow valve 4 are further installed in the pump body 2, a valve core 14 of the overflow valve 4 is connected with the control switch 3 through a movable frame 5, and the valve core 14 is driven by the pressure difference between the water outlet and the water storage cavity 1 within a preset range to move. In the pump body 2 of the high-pressure cleaning machine plastic pump, a valve core 14 part is communicated with a water outlet, and the valve core 14 part is communicated with a water storage cavity 1. Accordingly, when the pressure difference between the water outlet and the water storage chamber 1 reaches a predetermined range, the pressure difference pushes the valve element 14 to move. The moving spool 14 will react to the control switch 3 via the movable frame 5.

The pump body 2 is provided with a knob 6, the knob 6 rotates to drive the movable frame 5 to move, and the movable frame 5 acts on the valve core 14 and/or the control switch 3. The control of the user on the preset states of the control switch 3 and the overflow valve 4 is realized. In conclusion, the application realizes a switch structure by additionally arranging the movable frame 5 connected with the knob 6 and correspondingly setting the relative position of the control switch 3 and the overflow valve 4 to control all functions.

In the second embodiment, the pump body 2 is provided with an inlet pipe 9 and an outlet pipe 10 which are respectively communicated with the water storage cavity 1, the water storage cavity 1 is connected with the outlet pipe 10 through a plurality of sub-runners, each sub-runner is provided with a plunger for controlling on-off, the water outlet is arranged on the outlet pipe 10, the outlet pipe 10 is provided with a water inlet communicated with the water storage cavity 1, a main valve 7 is arranged between the water inlet and the water outlet, and fluid entering the outlet pipe 10 from the water inlet reaches the water outlet through the main valve 7.

The overflow valve 4 is arranged in the water outlet pipe 10.

The overflow valve 4 comprises a valve seat 11, a valve cavity 12 is arranged in the valve seat 11, an overflow hole 15 is formed in the valve seat 11, and the valve cavity 12 is communicated with the water storage cavity through the overflow hole 15. Namely, the valve cavity 12 of the overflow valve 4 is always communicated with the water storage cavity, and the pressure relief of the overflow valve 4 is equal to the pressure difference between the water pressure at the water outlet of the overflow valve 4 and the water storage cavity. Specifically, the overflow valve 4 is communicated with the water outlet.

The valve core 14 is arranged in the valve cavity 12, and a sealing ring 16 is arranged between the periphery of the valve core 14 and the inner wall surface of the valve cavity 12. The head of the valve core 14 is communicated with the water outlet pipe 10, and the tail of the valve core 14 is communicated with the overflow hole 15.

The overflow valve 4 further comprises a valve rod 13, the valve rod 13 and a valve core 14 are coaxially arranged, and the valve core 14 is in contact connection with the movable frame 5 through the valve rod 13. Namely, the valve core 14 moves to drive the movable frame 5 to move through the valve rod 13. The corresponding movement of the movable frame 5 can also drive the valve rod 13 to move, and the position of the valve rod 13 is changed.

Further, the valve rod 13 is installed in the valve seat 11, one end of the valve rod 13 is connected with the valve core 14, the other end of the valve rod 13 is connected with the control switch 3, the valve core 14 moves to drive the valve rod 13 to move, and the moving valve rod 13 controls the control switch 3 to be turned on or turned off.

Further, a spring 17 is disposed between the valve rod 13 and the valve seat 11, and the spring 17 provides a force for returning the valve rod 13 to the initial state. Namely, after the water pressure at the water outlet and the water pressure in the water storage cavity reach a relative balance, the spring 17 pushes the valve rod 13 and drives the valve core 14 to return to an initial state.

The other contents of the second embodiment are the same as those of the first embodiment.

In the third embodiment, the movable frame 5 includes an inclined wall surface 53a, and one end of the valve rod 13 is in contact connection with the inclined wall surface 53 a.

The movable frame 5 includes a first wall 51a, the first wall 51a is disposed opposite to the inclined wall 53a, and the control switch 3 is disposed near the first wall 51 a. The valve body in be provided with the locating part, the locating part restriction adjustable shelf 5 can only move to the direction of being close to or keeping away from control switch 3.

When the valve rod 13 pushes the movable frame 5 to move, the first wall 51a is subjected to force decomposition, and the partially decomposed force pushes the movable frame 5 to move towards or away from the control switch 3.

The knob 6 is connected with the cam 8 through a rotating rod, and the knob 6 rotates to drive the cam 8 to rotate through the rotating rod.

The cam 8 rotates until the flange of the cam 8 acts on the inner wall surface of the movable frame 5. The rotating cam 8 drives the movable frame 5 to move.

In some embodiments of the present application, the movable frame 5 is a ladder-shaped frame structure, the movable frame 5 includes a first side wall 51, a second side wall 52, a third side wall 53 and a fourth side wall 54, and the first side wall 51, the second side wall 52, the third side wall 53 and the fourth side wall 54 are connected end to form the ladder-shaped frame structure; the first wall 51a is located on the first side wall 51, and the inclined wall 53a is located on the third side wall 53.

A blocking wall 55 is arranged in the movable frame 5, the blocking wall 55 is arranged close to the third side wall 53 of the movable frame 5, the blocking wall 55, the first side wall 51, the second side wall 52 and the fourth side wall 54 form a rectangular space, and the cam 8 is positioned in the rectangular space.

Specifically, when the cam 8 acts on the blocking wall 55, the movable frame 5 is pushed to move towards the side far away from the control switch 3; when the cam 8 acts on the first side wall 51, the movable frame 5 is pushed to move towards the side close to the control switch 3.

Further, the axial center of the cam 8 is disposed close to the second side wall 52, and the second side wall 52 limits the rotation angle range of the cam 8 to 180 ° to 220 °.

The other contents of the third embodiment are the same as those of the first embodiment or the second embodiment.

In actual use, the knob 6 acts on the first side wall 51 and makes the first side wall 51 contact with the control switch 3, and the control switch 3 is turned off, so that the cleaning machine is stopped. The rotation acts on the third side wall 53 to push the movable frame 5 to move, the first side wall 51 leaves the control switch 3, at this time, the control switch 3 is opened, and the cleaning machine enters a working state.

And in the working state of the cleaning machine, the pressure difference between the water outlet and the water storage cavity 1 is small, the pressure difference does not reach the preset range, the valve core 14 does not move, the control switch 3 keeps the opening state at the moment, and the cleaning machine keeps the working state. When the water pressure of the water outlet is too high (namely the pressure difference between the water outlet and the water storage cavity 1 reaches a preset range), the valve core 14 is driven to move, the valve core 14 can push the valve rod 13 to move to drive the movable frame 5 to move towards one side of the control switch 3, the movable frame 5 moves to be in contact with the control switch 3, the control switch 3 is closed, and the cleaning machine stops.

This application adopts direct current motor drive pump body work.

The present application has been described in detail above, and specific examples thereof are used herein to explain the principles and implementations of the present application, which are presented solely to aid in understanding the present application and its core concepts. It should be noted that, for those skilled in the art, without departing from the principle of the present application, the present application can also make several improvements and modifications, and those improvements and modifications also fall into the protection scope of the claims of the present application.

Claims

1. The utility model provides a direct current motor plastic pump which characterized in that includes the pump body (2) that has delivery port and water storage chamber (1), still installs control switch (3) and overflow valve (4) in the pump body (2), case (14) of overflow valve (4) are connected with control switch (3) through adjustable shelf (5), the pump body (2) on install knob (6), knob (6) rotatory drive adjustable shelf (5) and remove, delivery port and the pressure differential drive valve core (14) in water storage chamber (1) in the predetermined limit remove.

2. The direct-current motor plastic pump according to claim 1, wherein the overflow valve (4) further comprises a valve rod (13), the valve rod (13) and the valve core (14) are coaxially arranged, and the valve core (14) is in contact connection with the movable frame (5) through the valve rod (13).

3. The plastic pump of claim 2, wherein said movable frame (5) includes an inclined wall (53 a), and one end of said valve stem (13) is in contact with said inclined wall (53 a).

4. A direct current motor plastic pump according to claim 3, characterized in that said movable frame (5) comprises a first wall (51 a), said first wall (51 a) being arranged opposite to an inclined wall (53 a), said control switch (3) being arranged close to the first wall (51 a).

5. The direct current motor plastic pump according to claim 4, wherein the knob (6) is connected to the cam (8) through a rotating rod, and the rotation of the knob (6) drives the cam (8) to rotate through the rotating rod; the rotating cam (8) drives the movable frame (5) to move.

6. The direct current motor plastic pump according to claim 5, wherein the movable frame (5) is a trapezoid frame structure, the movable frame (5) comprises a first side wall (51), a second side wall (52), a third side wall (53) and a fourth side wall (54), and the first side wall (51), the second side wall (52), the third side wall (53) and the fourth side wall (54) are connected end to form the trapezoid frame structure; the first wall surface (51 a) is positioned on the first side wall (51), and the inclined wall surface (53 a) is positioned on the third side wall (53).

7. The direct current motor plastic pump according to claim 6, wherein a blocking wall (55) is arranged in the movable frame (5), the blocking wall (55) is arranged close to the third side wall (53) of the movable frame (5), the blocking wall (55), the first side wall (51), the second side wall (52) and the fourth side wall (54) form a rectangular space, and the cam (8) is positioned in the rectangular space; when the cam (8) acts on the blocking wall (55), the movable frame (5) is pushed to move towards one side far away from the control switch (3); when the cam (8) acts on the first side wall (51), the movable frame (5) is pushed to move towards the side close to the control switch (3).

8. The direct current motor plastic pump according to claim 1, characterized in that the pump body (2) is provided with a water inlet pipe (9) and a water outlet pipe (10) which are respectively communicated with the water storage cavity (1), the water storage cavity (1) is connected with the water outlet pipe (10) through a plurality of sub-flow passages, each sub-flow passage is provided with a plunger for controlling on-off, the water outlet is arranged on the water outlet pipe (10), the water outlet pipe (10) is provided with a water inlet communicated with the water storage cavity (1), a main valve (7) is arranged between the water inlet and the water outlet, and fluid entering the water outlet pipe (10) from the water inlet reaches the water outlet through the main valve (7).

9. The direct current motor plastic pump according to claim 8, wherein the overflow valve (4) is installed in the water outlet pipe (10); the overflow valve (4) comprises a valve seat (11), a valve cavity (12) is arranged in the valve seat (11), an overflow hole (15) is formed in the valve seat (11), and the valve cavity (12) is communicated with the water storage cavity through the overflow hole (15).

10. The direct current motor plastic pump according to claim 9, characterized in that the valve core (14) is installed in the valve cavity (12), and a sealing ring (16) is arranged between the outer periphery of the valve core (14) and the inner wall surface of the valve cavity (12); the head of the valve core (14) is communicated with the water outlet pipe (10), and the tail of the valve core (14) is communicated with the overflow hole (15).