CN114033646A

CN114033646A - Pump assembly

Info

Publication number: CN114033646A
Application number: CN202111204810.5A
Authority: CN
Inventors: 韩元平; 邹文君
Original assignee: Hefei Xinhu Canned Motor Pump Co Ltd
Current assignee: Hefei Xinhu Canned Motor Pump Co Ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-02-11

Abstract

The invention belongs to the technical field of pumps, and discloses a pump assembly, which comprises: the side wall of the pump barrel is provided with a water inlet, and the first end of the pump barrel is provided with a water outlet; a plunger assembly slidably disposed within the pump barrel, the plunger assembly capable of discharging liquid entering the pump barrel from the water inlet through the water outlet; the plunger assembly comprises a driving assembly and a cam, wherein the cam is in transmission connection with the driving assembly, the peripheral wall of the cam is used for driving the cam to rotate so as to drive the plunger assembly to reciprocate. The principle that the outer diameters of the cams are different is utilized to drive the plunger assembly to reciprocate, the number of driving structural parts is small, the structure is simple, the occupied space is small, and the transmission is stable and reliable.

Description

Pump assembly

Technical Field

The invention belongs to the technical field of pumps, and particularly relates to a pump assembly.

Background

Pumps are often required in the field of liquid delivery, and plunger type water pumps are often required for water discharge at water spray outlets of some equipment. The plunger type water pump usually adopts a connecting rod structure to drive the plunger to reciprocate, but the connecting rod structure occupies a large space and is complicated to arrange, so that the practical application effect is not ideal.

Therefore, a pump assembly is needed to solve the above technical problems.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a pump assembly which drives a plunger assembly to reciprocate by utilizing the principle that the outer diameters of cams are different, has fewer driving structural parts, simpler structure, smaller occupied space and more stable and reliable transmission.

In order to achieve the purpose, the invention adopts the following technical scheme:

there is provided a pump assembly comprising:

the side wall of the pump barrel is provided with a water inlet, and the first end of the pump barrel is provided with a water outlet;

a plunger assembly slidably disposed within the pump barrel, the plunger assembly capable of discharging liquid entering the pump barrel from the water inlet through the water outlet;

the plunger assembly comprises a driving assembly and a cam, wherein the cam is in transmission connection with the driving assembly, the peripheral wall of the cam is used for driving the cam to rotate so as to drive the plunger assembly to reciprocate.

As a preferred technical scheme of a pump assembly, the plunger assembly comprises a push rod and a sealing plug, the push rod extends into the pump barrel from the first end of the pump barrel, and the sealing plug is located in the pump barrel and arranged at the first end of the push rod.

As a preferred technical solution of the pump assembly, the plunger assembly further includes:

the sealing ring is sleeved on the push rod and is pressed against the inner wall of the pump barrel;

and the roller is rotatably arranged at the second end of the push rod and is in rolling contact with the cam.

As a preferred technical scheme of pump package spare, still include the bib, its cover is established the second end of pump barrel, the push rod wears to locate the bib.

As a preferred technical scheme of the pump assembly, the pump assembly further comprises an elastic piece, wherein the elastic piece is sleeved on the push rod, and two ends of the elastic piece respectively abut against the roller and the water pocket.

As a preferred technical scheme of the pump assembly, the pump assembly further comprises a base, the pump barrel is arranged on the base, and the driving assembly is arranged on the base.

As a preferred technical solution of the pump assembly, the driving assembly includes a motor, which includes a housing, a stator assembly and a rotor assembly, the housing is fixed on the base, the stator assembly is disposed in the housing, the rotor assembly is partially rotatably disposed in the stator assembly, and the cam is fixed on a rotating shaft of the rotor assembly.

As a preferred technical scheme of the pump assembly, two ends of the rotating shaft are respectively and rotatably connected with the base and the shell through bearings.

As a preferable technical scheme of the pump assembly, a sealing gasket is arranged between the shell and the base.

Compared with the prior art, the invention has the following beneficial effects:

the driving assembly drives the cam to rotate, and in the rotating process of the cam, the maximum part of the outer diameter of the cam rotates to the position of the plunger assembly to drive the plunger assembly to move towards the water outlet, so that liquid entering the pump barrel from the water inlet is discharged from the water outlet. When the smaller part of external diameter of cam rotated plunger subassembly department, ordered about the plunger subassembly to keeping away from the direction motion of delivery port, can make liquid enter into the pump barrel through the inlet opening to when the plunger subassembly next moved to the direction that is close to the delivery port, can discharge liquid. The principle that the outer diameters of the cams are different is utilized to drive the plunger assembly to reciprocate, the number of driving structural parts is small, the structure is simple, the occupied space is small, and the transmission is stable and reliable.

Drawings

FIG. 1 is a first schematic structural view of a pump assembly provided by the present invention;

FIG. 2 is a schematic structural diagram II of a pump assembly provided by the present invention;

fig. 3 is a third schematic structural diagram of the pump assembly provided by the present invention.

001, a pump cylinder; 002. a sealing plug; 003. a push rod; 004. a water pocket; 005. a machine base; 006. a water inlet hole; 007. a rotating shaft; 008. a cam; 009. a roller; 011. a seal ring; 013. a water outlet; 014. a bearing; 015. a housing; 016. a gasket; 018. an elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

As shown in fig. 1-3, the present embodiment discloses a pump assembly comprising a pump barrel 001, a plunger assembly, a drive assembly, and a cam 008.

Be provided with inlet opening 006 on the lateral wall of pump barrel 001, the first end of pump barrel 001 is provided with delivery port 013. Liquid discharged by the device enters the pump cylinder 001 through the water inlet hole 006 and is discharged through the water outlet 013.

The plunger assembly is slidably disposed in the cylinder 001, and the plunger assembly can discharge the liquid introduced into the cylinder 001 from the water inlet hole 006 through the water outlet 013. When the plunger assembly moves to an end far away from the water outlet 013, the water inlet hole 006 is exposed in the pump cylinder 001, and liquid can enter the pump cylinder 001; when the plunger assembly moves to an end near the water outlet 013, the plunger assembly can block the water inlet hole 006.

Specifically, the plunger assembly includes push rod 003 and sealing plug 002, and the first end of push rod 003 is provided with the great push portion of external diameter, and push rod 003 stretches into in pump barrel 001 from the second end of pump barrel 001, specifically the push portion is located pump barrel 001 completely. The sealing plug 002 is located in the pump barrel 001 and is disposed at the first end of the push rod 003. The two concrete modes of sealing plug 002 are fixed on the promotion portion through interference fit, and the material of sealing plug 002 is the PTEE material, and it can place liquid effectively and leak. The sealing plug 002 can also be fixed to the pushing part by injection molding.

The plunger assembly further comprises a sealing ring 011, the sealing ring 011 is sleeved on the push rod 003 and abuts against the inner wall of the pump barrel 001, specifically, two annular grooves are formed in the outer wall of the pushing portion, and the sealing ring 011 is located in the annular grooves. The sealing ring 011 can be sealed for the second time, and the sealing ring 011 is matched with the sealing plug 002 to be sealed for the second time, so that the effect is better.

The cam 008 is in transmission connection with a driving assembly, and the driving assembly is used for driving the cam 008 to rotate so as to drive the plunger assembly to reciprocate around the outer peripheral wall of the cam 008. The plunger assembly further includes a roller 009 rotatably disposed at the second end of the push rod 003 and in rolling abutment with the cam 008, which may reduce friction and reduce wear.

The pump assembly further comprises a water pocket 004, an elastic piece 018 and a base 005, the pump barrel 001 is arranged on the base 005, and the driving assembly is arranged on the base 005. The water pocket 004 covers the second end of the pump barrel 001, is clamped and fixed between the base 005 and the pump barrel 001, and is fixedly connected between the base 005 and the pump barrel 001 through screws. The push rod 003 penetrates through the water pocket 004 and is connected with the water pocket 004 in a sealing way. The function of pocket 004 is can be with falling into pocket 004 from the water that leaks between plunger subassembly and pump barrel 001, avoid downflow below to damage the drive assembly. The specific material of the water pocket 004 is rubber. The elastic member 018 is sleeved on the push rod 003, two ends of the elastic member are respectively pressed against the roller 009 and the water pocket 004, and the elastic member 018 is specifically a compression spring.

Drive assembly includes the motor, and it includes shell 015, stator module and rotor subassembly, and shell 015 is fixed on frame 005, is provided with sealed 016 between shell 015 and the frame 005, specifically, passes through the screw connection between shell 015 and the frame 005. Stator module sets up in shell 015, and rotor module part sets up in stator module with rotating, and cam 008 is fixed on rotor module's pivot 007, specifically can fix on pivot 007 through interference fit's mode, also can fix on pivot 007 through welded mode. The two ends of the rotating shaft 007 are rotatably connected with the base 005 and the shell 015 through bearings 014 respectively, and the two ends of the rotating shaft 007 are supported by the bearings 014, so that the rotating stability of the cam 008 is improved.

The rotor subassembly of motor rotates, drives cam 008 and rotates, and cam 008 rotates the in-process, and the biggest part of the external diameter of cam 008 rotates to gyro wheel 009 department, with gyro wheel 009 looks butt, can order about the push rod 003 to move, makes sealing plug 002 move to delivery port 013 department, will enter into the liquid in the pump barrel 001 by inlet opening 006 and discharge through delivery port 013. When the roller 009 is rotated by the smaller outer diameter portion of the cam 008, the push rod 003 is moved in a direction away from the outlet 013 by the elastic member 018 and gravity, and the sealing plug 002 is moved to the side of the inlet 006 away from the outlet 013, so that the liquid can be introduced into the cylinder 001 through the inlet 006, and the liquid can be discharged when the plunger assembly is moved in a direction toward the outlet 013 next time. Utilize the different principle of cam 008 external diameter, order about plunger subassembly reciprocating motion, drive structure part is less, and the structure is fairly simple, and the occupation space is less, and the transmission is also more reliable and more stable.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A pump assembly, comprising:

the water pump comprises a pump barrel (001), wherein a water inlet hole (006) is formed in the side wall of the pump barrel, and a water outlet (013) is formed in the first end of the pump barrel (001);

a plunger assembly slidably disposed within the pump barrel (001), the plunger assembly being capable of discharging liquid that enters the pump barrel (001) from the water inlet hole (006) through the water outlet (013);

drive assembly and cam (008), cam (008) with the drive assembly transmission is connected, the periphery wall of cam (008), drive assembly is used for driving cam (008) rotates to the driving plunger subassembly reciprocating motion.

2. The pump assembly of claim 1, wherein the plunger assembly comprises a push rod (003) and a sealing plug (002), the push rod (003) extending into the pump barrel (001) from a first end of the pump barrel (001), the sealing plug (002) being located within the pump barrel (001) and disposed at the first end of the push rod (003).

3. The pump assembly of claim 2, wherein the plunger assembly further comprises:

the sealing ring (011) is sleeved on the push rod (003) and is pressed against the inner wall of the pump barrel (001);

and a roller (009) rotatably disposed at a second end of the push rod (003) and in rolling contact with the cam (008).

4. The pump assembly of claim 1, further comprising a water pocket (004) covering the second end of the pump barrel (001), wherein the push rod (003) is inserted into the water pocket (004).

5. The pump assembly of claim 4, further comprising an elastic member (018) sleeved on the push rod (003) and having two ends respectively pressed against the roller (009) and the water pocket (004).

6. The pump assembly of claim 1, further comprising a housing (005), the pump barrel (001) being disposed on the housing (005), the drive assembly being disposed on the housing (005).

7. The pump assembly of claim 6, wherein the drive assembly comprises a motor including a housing (015), a stator assembly and a rotor assembly, the housing (015) being secured to the housing (005), the stator assembly being disposed within the housing (015), the rotor assembly being partially rotationally disposed within the stator assembly, the cam (008) being secured to a rotational shaft (007) of the rotor assembly.

8. The pump assembly of claim 7, wherein the shaft (007) is rotatably connected at both ends to the housing (005) and the outer casing (015) by bearings (014), respectively.

9. Pump assembly according to claim 7, characterized in that a sealing gasket (016) is provided between the housing (015) and the housing (005).