CN2550073Y

CN2550073Y - Spray pump

Info

Publication number: CN2550073Y
Application number: CN02271560.6U
Authority: CN
Inventors: 林添大
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-08
Filing date: 2002-07-08
Publication date: 2003-05-14
Anticipated expiration: 2012-07-08

Abstract

A spray pump with good atomization effect comprises a nozzle, a press head, a main column, a bottle cap, a piston, a pump body, a steel ball and a spring; it is characterized in that the piston is provided with an axial through hole, and a counter bore is arranged below the through hole; the outer cylindrical surface of the main column is provided with an annular groove, the outer diameter of the annular groove is matched with the inner diameter of the axial through hole of the piston, the groove width of the annular groove is larger than the length of the axial through hole of the piston, the lower part of the annular groove is provided with a sealing ring along the circumference of the outer cylindrical surface of the main column, and the distance between the sealing ring and the annular groove is smaller than the depth of the counter bore; the difference between the depth of the counter bore of the piston and the distance from the annular groove of the main column to the sealing ring is not greater than the difference between the width of the annular groove of the main column and the length of the axial through hole of the piston; the upper end surface of the main column is provided with a blind hole along the axial direction, and the surface of the main column between the annular groove and the sealing ring is provided with a side hole communicated with the blind hole; the inner diameter of the piston counter bore is not larger than the outer diameter of the main column sealing ring, and a gap is reserved between the sealing ring and the main column cylindrical surface of the side hole section and the inner wall of the piston counter bore.

Description

Atomizing pump

Technical field:

The utility model relates to a kind of atomizing pump, particularly a kind of in the fine chemistry industry industry, be used for bottle in the liquid sucking-off and the atomizing atomizing pump.

Background technology:

In the existing fine chemistry industry industry particularly cosmetic industry often use a kind of sprayer, just be to use this sprayer as the hair jelly in the cosmetic industry, its principle is the pressure-raising pump of a band suction pipe of installing on liquid storage bottle, suction pipe stretches into the liquid storage bottle bottom, the pressure-raising pump is by the pump housing, piston, on spring reaches, down unidirectional valve sets becomes, piston becomes the air-tightness link joint with pump housing inner chamber, constitute piston, on, lower valve lays respectively on the pump housing, the below, piston moves up and down in the pump housing under the effect of hand and spring repeatedly, liquid in the bottle is sucked the pump housing, and from the nozzle of pressure-raising pump top, extrude, form vaporific.The check valve of its use is to place a steel ball in a funnelform opening, utilizes the gravity effect of steel ball, the power that makes progress when steel ball is suffered during greater than suffered downward power steel ball move up opening opened; Liquid outlet has used above-mentioned check valve in this sprayer because above its pump housing, and being the effect of the power that makes progress by liquid, just can open by this check valve, so liquid is subjected to the resistance of steel ball in the ejection process, influenced jet velocity, make its atomizing effect undesirable.

Summary of the invention:

Technical problem:

The utility model is that the jet velocity of the existing sprayer existence of solution is slow, the problem of atomizing effect difference.

Technical scheme:

A kind of atomizing pump comprises nozzle, head, principal post, bottle cap, piston, the pump housing, steel ball and spring; It is characterized in that having on the piston axially extending bore, the through hole below has counterbore; The outer cylinder of principal post is provided with cannelure, the axially extending bore internal diameter of the external diameter of cannelure and piston matches, the groove width of cannelure is provided with sealing ring in the cannelure bottom along principal post outer cylinder circumference greater than the length of piston axially extending bore, and the distance of sealing ring and cannelure is less than the degree of depth of piston counterbore; The piston counterbore degree of depth and principal post cannelure are not more than length poor of the width of principal post cannelure and piston axially extending bore to the difference of the distance of sealing ring; The principal post upper surface has blind hole vertically, has side opening on cannelure and principal post surface between the sealing ring and communicates with blind hole; Piston counterbore internal diameter is not more than the external diameter of principal post sealing ring, and sealing ring leaves the gap between the inwall of side opening section principal post cylinder and piston counterbore.

Operation principle: before pressing head, principal post is in highest point under the effect of spring, the neck of piston (axially extending bore section) is positioned at principal post cannelure bottom, outer rim or inwall that sealing ring is close to the piston counterbore make the principal post blind hole not communicate with pump housing inner chamber, pressing head drive principal post moves downward, frictional force between the piston external diameter and the pump housing is greater than the frictional force between piston and principal post, principal post and piston space produce relative motion earlier, sealing ring on the principal post separates the blind hole that makes principal post and communicates with pump housing inner chamber with piston counterbore outer rim or inwall, principal post promotes piston and moves down when principal post moves down into the cannelure top and withstands piston top, the liquid in the piston compression pump intracoelomic cavity makes it after the gap of piston and sealing ring and principal post side opening enter blind hole the passage on head again and nozzle spray (therebetween steel ball the hole of pump housing bottom is blocked the liquid that makes in the pump housing inner chamber can not Backflow bottle in); After unclamping head, principal post moves up under the spring force effect, frictional force between the piston external diameter and the pump housing is greater than the frictional force between piston and principal post at this moment, principal post and piston space produce relative motion earlier, the counterbore outer rim of the sealing ring on the principal post and piston or inwall contact the blind hole and the pump housing inner chamber that make on the principal post and separate, touching piston counterbore bottom drive piston up to principal post cannelure bottom upwards moves simultaneously, at this moment pump housing inner chamber produces negative pressure, steel ball is pushed up upwards opens lower valve, and liquid is inhaled into pump housing inner chamber in order to depressing the usefulness of head next time in the bottle.

Beneficial effect:

Owing to adopted technical scheme described in the utility model, the liquid in the pump housing does not resemble the resistance that existing atomizing pump is subjected to check valve in the ejection process, so its jet velocity is unaffected, improved atomizing effect.

Description of drawings:

Fig. 1 is the internal structure schematic diagram of an embodiment of atomizing pump described in the utility model.

Fig. 2 is the enlarged drawing of principal post among Fig. 1 embodiment.

Fig. 3 is the enlarged drawing of piston among Fig. 1 embodiment.

Fig. 4 is the enlarged drawing of A part among Fig. 1 embodiment.

Fig. 5 is a sealing ring and schematic diagram after piston separates when principal post moves down among Fig. 4.

Drawing description of symbols: 1-head, 2-nozzle, 3-principal post, 31-cannelure, 32-sealing ring, 33-side opening, 34-blind hole, the 4-locking closure, ring in the 5-bottle cap, 51-, 6-piston, 61-through hole, 62-counterbore, the 7-pump housing, 71-flanging, 72-air-vent, 73-pump housing inner chamber, 8-spring, 9-steel ball.

The specific embodiment:

Fig. 1 is the internal structure schematic diagram of a specific embodiment of atomizing pump described in the utility model.

In conjunction with Fig. 1, Fig. 2, Fig. 3 as seen, described atomizing pump comprises nozzle 2, head 1, principal post 3, bottle cap 5, piston 6, the pump housing 7, steel ball 9 and spring 8; The pump housing 7 is fixed on the interior ring 51 of bottle cap 5,4 pairs of pistons 6 of locking closure play the upper limit effect, steel ball 9 constitutes check valve with the opening of the pump housing 7 bottoms, nozzle 2 is housed on the head 1, piston 6 is enclosed within the cannelure 31 of principal post 3, its external diameter matches with the pump housing 7 internal diameters, principal post 3 is provided with blind hole 34, side opening 3 and sealing ring 32, passage in blind hole 34 and the head 1 communicates, have axially extending bore 61 and counterbore 62 on the piston 6, the groove width T1 of cannelure 31 is greater than the length T 3 of piston 6 axially extending bores 61, sealing ring 32 and cannelure 31 apart from the degree of depth T4 of T2 less than piston counterbore 62; Piston counterbore degree of depth T4 and principal post cannelure to sealing ring apart from poor less than the length T 3 of the width T1 of principal post cannelure and piston axially extending bore of the difference of T2; Piston counterbore 62 internal diameters are not more than the external diameter of principal post sealing ring 32, and sealing ring 32 leaves the gap between the inwall of 31 sections principal post cylinders of cannelure and piston counterbore 62; Spring 8 is contained between the principal post 3 and the pump housing 7.

Can know the through hole of understanding on the cannelure on the principal post 3 31 in the utility model, side opening 33, sealing ring 32 and the piston 6 61, the effect of counterbore 62 in conjunction with above-mentioned operation principle and Fig. 4, Fig. 5.

Claims

1, a kind of atomizing pump comprises nozzle (2), head (1), principal post (3), bottle cap (5), piston (6), the pump housing (7), steel ball (9) and spring (8); It is characterized in that having on the piston (6) axially extending bore (61), through hole (61) below has counterbore (62); The outer cylinder of principal post (3) is provided with cannelure (31), axially extending bore (61) internal diameter of the external diameter of cannelure (31) and piston (6) matches, the groove width (T1) of cannelure (31) is greater than the length (T3) of piston axially extending bore (61), be provided with sealing ring (32) in cannelure (31) bottom along principal post (3) outer cylinder circumference, the distance (T2) of sealing ring (32) and cannelure (31) is less than the degree of depth (T4) of piston counterbore (62); The piston counterbore degree of depth (T4) and principal post cannelure (31) are not more than length (T3) poor of the width (T1) of principal post cannelure and piston axially extending bore to the difference of the distance (T2) of sealing ring (32); Principal post (3) upper surface has blind hole (34) vertically, has side opening (33) on cannelure (31) and principal post surface between the sealing ring (32) and communicates with blind hole (34); Piston counterbore (62) internal diameter is not more than the external diameter of principal post sealing ring (32), and sealing ring (32) leaves the gap between the inwall of the cylinder of side opening (33) section principal post (3) and piston counterbore (62).