CN219682925U

CN219682925U - Suction pump head

Info

Publication number: CN219682925U
Application number: CN202321118435.7U
Authority: CN
Inventors: 潘今晴
Original assignee: Anhui Mingzhuang Environmental Protection Technology Co ltd
Current assignee: Anhui Mingzhuang Environmental Protection Technology Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-09-15
Anticipated expiration: 2033-05-11

Abstract

The utility model discloses a back suction pump head, which relates to the technical field of back suction pump heads, and comprises a first connecting channel, a second connecting channel and a liquid spraying channel, wherein the first connecting channel is arranged in a movable groove and corresponds to the position of the liquid supply channel; wherein, the port of the liquid supply channel corresponding to the first connecting channel is provided with a second connecting channel; the back suction structure is arranged between the first connecting channel and the second connecting channel; the back suction structure comprises an upper cover body which is communicated with one end of the first connecting channel far away from the liquid spraying channel; the inner wall of the opening end of the reflux barrel is provided with a limit groove, and the upper cover body stretches into the limit groove; the upper cover body is used for pressing the backflow barrel to deform the backflow barrel, and when the upper cover body does not press, the backflow barrel is restored to the original state and generates negative pressure so as to suck the liquid in the liquid spraying channel back into the backflow barrel; the utility model has the advantages of convenient use, prolonged service life of the reflux structure, and the like.

Description

Suction pump head

Technical Field

The utility model relates to the technical field of back suction pump heads, in particular to a back suction pump head.

Background

In various industries in life, more or less spray bottles are used, the liquid in the bottle body is pumped out through the pump head and sprayed out from the nozzle, but in the using process of the traditional pump head, a large amount of liquid is left at the nozzle of the pump head, so that a large amount of water in the liquid volatilizes, the nozzle is blocked after the solution dries, and a reflux device is arranged in the pump head in the prior art;

as disclosed in patent application number CN202121014543.0, a pump head return structure is disclosed in which by pressing a pump head body 1, an upper chamber plate 22 is deformed under pressing and bent toward the inside of a return chamber 20, so that the volume of the return chamber 20 is reduced; liquid enters the liquid supply channel 10 from the liquid pumping mechanism 2 and flows out of the liquid outlet channel 30 after passing through the backflow cavity 20; then the pump head body 1 is loosened, and the upper cavity plate 22 is restored to the original state under the elastic action; the internal volume of the backflow cavity 20 is increased, so that negative pressure can be generated in the backflow cavity 20, liquid remained in the liquid outlet channel 30 is sucked into the backflow cavity 20, and the phenomenon that the liquid solidifies and blocks the pump head body 1 or the liquid flows out and leaks is prevented;

in this patent among the prior art through the deformation of last chamber board realize the volume change in backward flow chamber, come the solution back in the drain channel to the backward flow intracavity, the last chamber board that this patent adopted is external, goes up the chamber board simultaneously and also satisfies and to warp, so the last chamber board in this patent is the rubber material generally, in actual use, leads to the damage of chamber board because of friction, external force easily, goes up the chamber board once damaged, and whole pump head just can't use.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a back suction pump head so as to solve the problems of low safety and easy damage of a back suction structure arranged on the surface of the pump head in the prior art described in the background art.

In order to solve the problems, the utility model provides the following technical scheme:

a suck-back pump head comprises a pump head shell, a pump head and a pump head control device, wherein the pump head shell is provided with a nozzle, a pressing groove and a movable groove, and a liquid spraying channel is arranged in the nozzle; the first connecting channel is arranged in the movable groove at a position corresponding to the liquid supply channel and is communicated with the liquid spraying channel; wherein, the port of the liquid supply channel corresponding to the first connecting channel is provided with a second connecting channel; the suck-back structure is arranged between the first connecting channel and the second connecting channel; the back suction structure comprises an upper cover body which is communicated with one end of the first connecting channel far away from the liquid spraying channel; the inner wall of the opening end of the reflux barrel is provided with a limit groove, and the upper cover body stretches into the limit groove;

the upper cover body is used for pressing the backflow barrel to enable the backflow barrel to deform, and when the upper cover body does not press, the backflow barrel is restored to the original state and generates negative pressure so as to suck liquid in the liquid spraying channel back into the backflow barrel.

Preferably: the upper cover body is provided with an upper connecting pipe which slides into the first connecting channel, the outer circumferential wall of the upper connecting pipe is provided with a first convex ring, the position corresponding to the first convex ring in the first connecting channel is provided with a first annular clamping groove, and the first convex ring extends into the first clamping groove.

Preferably: the reflux barrel is provided with a lower connecting pipe which slides into the second connecting channel, the outer circumferential wall of the lower connecting pipe is provided with a plurality of second convex rings, the position corresponding to the second convex rings in the second connecting channel is provided with an annular second clamping groove, and the second convex rings extend into the second clamping groove.

Preferably: the inner wall of the limit groove is provided with annular locating grooves distributed along the limit groove, the position of the upper cover body corresponding to the locating groove is provided with annular extension rings, and the extension rings extend into the locating grooves.

Preferably: the second connecting channel has an outer circumferential wall with an extension ring.

The beneficial effects of adopting above technical scheme are:

the utility model can prevent the reflux structure from being damaged by external force when being arranged in the movable groove, and prolongs the service life.

Drawings

Fig. 1 is an exploded view of a suck-back pump head of the present utility model.

Fig. 2 is a cross-sectional view of a suck-back pump head of the present utility model.

Fig. 3 is a cross-sectional view of the pump head housing of the present utility model.

Fig. 4 is a front view of the reflow structure of the present utility model.

Fig. 5 is a cross-sectional view of a reflow structure of the present utility model.

Wherein: pump head housing 10, pressing groove 11, movable groove 12, nozzle 20, liquid ejecting passage 21, first connecting passage 30, first clamping groove 31, liquid supplying passage 40, second connecting passage 41, second clamping groove 42, extension ring 43, bottle cap 50, upper cover 60, upper connecting pipe 61, first projecting ring 62, extension ring 63, reflux drum 70, lower connecting pipe 71, second projecting ring 72, limiting groove 73, and positioning groove 74.

Detailed Description

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1 to 5, in a first embodiment, a suck-back pump head comprises a pump head housing 10 having a nozzle 20, a pressing groove 11 and a movable groove 12, wherein the nozzle 20 has a liquid spraying passage 21 therein; a first connecting channel 30 disposed in the movable slot 12 and corresponding to the liquid supply channel 40, the first connecting channel 30 being in communication with the liquid spraying channel 21; wherein, the liquid supply channel 40 has a second connection channel 41 corresponding to one port of the first connection channel 30; a suck-back structure disposed between the first connecting channel 30 and the second connecting channel 41; the suck-back structure comprises an upper cover 60 which is communicated with one end of the first connecting channel 30 far away from the liquid spraying channel 21; a reflux drum 70, which is communicated with one port of the second connecting channel 30, wherein the inner wall of the open end of the reflux drum 70 is provided with a limit groove 73, and the upper cover 60 extends into the limit groove 73; the upper cover 60 is used for pressing the backflow tub 70, so that the backflow tub 70 is deformed, and when the upper cover 60 is not pressed, the backflow tub 70 is restored to the original state and generates negative pressure so as to suck the liquid in the liquid spraying channel 21 back into the backflow tub 70.

The present embodiment is implemented as follows:

when the utility model is used, the external force can be applied to the pump head shell 10 through the pressing groove 11, so that the pump head shell 10 can move downwards relative to the bottle cap 50, the pump head shell 10 can apply downward force to the liquid supply channel 40 at the moment, so that the liquid supply channel 40 moves, meanwhile, the upper cover body 60 also applies pressure to the backflow barrel 70, so that the backflow barrel 70 is extruded and deformed, the internal air is extruded, when the backflow barrel 70 is not pressed, the original state of the backflow barrel 70 can be restored, negative pressure is generated in the backflow barrel 70 in the process, and the liquid in the liquid spraying channel 21 can be sucked back into the backflow barrel 70;

it should be noted that, each time the pump head housing 10 is released, the liquid in the liquid spraying channel 21 is caused to flow back, and the amount of the backflow is very small, so that the liquid in the liquid spraying channel 21 can only be sucked back, and the overall liquid supply is not affected.

Compared with the prior art, the utility model has the advantage that the service life of the reflow structure can be prolonged.

Referring to fig. 1, 2, 3, 4 and 5, the upper cover 60 has an upper connecting tube 61 extending into the first connecting channel 30 in a sliding manner, a first protruding ring 62 is provided on an outer circumferential wall of the upper connecting tube 61, a first annular clamping groove 31 is provided in the first connecting channel 30 corresponding to the first protruding ring 62, the first protruding ring 62 extends into the first clamping groove 31, and the first connecting tube 61 penetrating through the upper cover 60 is provided on the upper cover 60, so that the first connecting tube 61 can extend into the first connecting channel 30, and the first protruding ring 62 extends into the first clamping groove 31 to increase tightness.

Referring to fig. 1, 2, 3, 4 and 5, the reflow barrel 70 has a lower connecting tube 71 extending into the second connecting channel 41 in a sliding manner, the outer circumferential wall of the lower connecting tube 71 has a plurality of second convex rings 72, the second connecting channel 41 has a second annular clamping groove 42 corresponding to the second convex rings 72, the second convex rings 72 extend into the second clamping groove 42, and the second connecting tube 71 can extend into the second connecting channel 41 through the second connecting tube 71 arranged on the reflow barrel 70, and the second convex rings 72 extend into the second clamping groove 42 to increase the tightness.

Referring to fig. 1, 2, 3, 4 and 5, the inner wall of the limiting groove 73 is provided with annular positioning grooves 74 distributed along the limiting groove 73, the upper cover 60 is provided with annular extending rings 63 corresponding to the positioning grooves 74, the extending rings 63 extend into the positioning grooves 74, and the extending rings 63 extend into the positioning grooves 74, so that the tightness of the connection between the upper cover 60 and the reflow barrel 70 can be improved.

Referring to fig. 1, 2, 3, 4, 5, the second connection passage 41 has an extension ring 43 on an outer circumferential wall thereof, and the extension ring 43 is used to support deformation of the return tank 70.

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which fall within the scope of the present utility model.

Claims

1. A suck-back pump head, comprising

A pump head housing having a nozzle, a pressing groove and a movable groove, the nozzle having a liquid spraying passage therein;

it is characterized in that the method comprises the steps of,

the first connecting channel is arranged in the movable groove at a position corresponding to the liquid supply channel and is communicated with the liquid spraying channel;

wherein, the port of the liquid supply channel corresponding to the first connecting channel is provided with a second connecting channel;

the back suction structure is arranged between the first connecting channel and the second connecting channel;

the suck-back structure comprises

The upper cover body is communicated with one end, far away from the liquid spraying channel, of the first connecting channel;

the inner wall of the opening end of the reflux barrel is provided with a limit groove, and the upper cover body stretches into the limit groove;

2. The back suction pump head of claim 1, wherein the upper cover body is provided with an upper connecting pipe which slides into the first connecting channel, the outer circumferential wall of the upper connecting pipe is provided with a first convex ring, the position corresponding to the first convex ring in the first connecting channel is provided with a first annular clamping groove, and the first convex ring extends into the first clamping groove.

3. The back suction pump head of claim 1, wherein the back flow barrel is provided with a lower connecting pipe which slides into the second connecting channel, the outer circumferential wall of the lower connecting pipe is provided with a plurality of second convex rings, the position corresponding to the second convex rings in the second connecting channel is provided with a ring-shaped second clamping groove, and the second convex rings extend into the second clamping groove.

4. The back suction pump head of claim 1, wherein the inner wall of the limit groove is provided with annular locating grooves distributed along the limit groove, the upper cover body is provided with annular extension rings corresponding to the locating grooves, and the extension rings extend into the locating grooves.

5. The suction pump head of claim 4 wherein the second connecting channel has an extension ring on an outer circumferential wall thereof.