CN205023129U

CN205023129U - Foam pump

Info

Publication number: CN205023129U
Application number: CN201520744491.0U
Authority: CN
Inventors: 屠旭峰
Original assignee: Zhejiang JM Industry Co Ltd
Current assignee: Zhejiang JM Industry Co Ltd
Priority date: 2015-09-24
Filing date: 2015-09-24
Publication date: 2016-02-10
Anticipated expiration: 2025-09-24

Abstract

The utility model provides a foam pump, which comprises a pump body, big lid, the head cap, the foaming subassembly, two layers of space about divideing into through the baffle in the pump body, be equipped with mobile jib and lower mobile jib respectively in upper and lower two layers space, the lower extreme of going up the mobile jib passes mobile jib under was established to the baffle with the axle sleeve top, the upper end of going up the mobile jib is connected with the head cap, the lower extreme of mobile jib is connected with the blockage of locating pump body lower part down, it has the disc construction as the piston with the inner wall matched with of the pump body to go up mobile jib and the equal integrated into one piece in upper portion of mobile jib down, be equipped with first check valve and third check valve respectively below disc construction, it is equipped with second check valve and the fourth check valve that corresponds with the venthole position on the inner wall of mobile jib and mobile jib down respectively to go up. The utility model discloses a pump body adopts bilayer structure, and under the pump body external diameter prerequisite equal with dosage, haploid distance of pressing down just can obtain double tolerance to obtain double dosage, have that compact structure is reasonable, sealing performance good, heavy dose of characteristics.

Description

Foam pump

Technical field

The utility model relates to a kind of foam pump, especially a kind of foam pump of heavy dose.

Background technology

Foam pump is widely used in the field such as daily cosmetics, medicine, general foam pump dosage is all smaller, it is all the structure adopting the individual layer pump housing, but also there is the occasion needing dosage large, suppose under the prerequisite that pump housing external diameter is constant, want increasing dose will increase pressing stroke and the height of the pump housing, the height of such head cap will be very high, and impact uses and attractive in appearance.

Through looking into, the existing patent No. is the Chinese patent " a kind of foam pump " of 200720113219.8, it includes the pump housing, large piston, large piston rod, valve piston, small piston rod, head cap, foam screen, it is characterized in that arranging in described large piston rod the check valve with large piston gas cavity connects, and, the valve block in sleeve-shaped that check valve main body adopts elastomeric material to make, valve block is arranged on the permanent seat of large piston rod with step surface, and, the conical sealing surface that valve block upper end adopts diameter to increase gradually, fitted seal is carried out with the intercommunicating pore on large piston rod, intercommunicating pore is communicated with gas-liquid mixed cavity and large piston gas cavity in large piston rod.This foam pump is the same with existing, is also individual layer pump body structure, therefore needs the foam pump designing a kind of heavy dose newly, under the prerequisite that pump housing external diameter is equal with dosage, need not increase pressing stroke, meet the requirement of usability and aesthetic property.

Summary of the invention

Technical problem to be solved in the utility model provides for the above-mentioned state of the art foam pump that a kind of compact conformation is reasonable, dosage is large, practical.

The utility model solves the problems of the technologies described above adopted technical scheme: a kind of foam pump, it comprises the pump housing, large lid, head cap, foamed assembly, it is characterized in that: in the described pump housing, be divided into upper and lower two sheaf spaces by dividing plate, upper rhabd and the lower rhabd of hollow is respectively equipped with in upper and lower two sheaf spaces, the top that the lower end of upper rhabd is located at lower rhabd through diaphragm housing ring is connected, the upper end of upper rhabd is connected with head cap, the lower end of lower rhabd is connected with the obstruction being located at pump housing bottom, the disc-shaped structure as piston matched with the inwall of the pump housing is arranged at upper rhabd and the top of lower rhabd, between the disc-shaped structure and dividing plate of upper rhabd, the first cavity is formed between dividing plate and the disc-shaped structure of lower rhabd and between the disc-shaped structure of lower rhabd and obstruction, 3rd cavity and the second cavity, the disc-shaped structure of upper rhabd and lower rhabd is provided with induction opening, the first check valve and the 3rd check valve of cooperation is respectively equipped with below disc-shaped structure, air gate is respectively equipped with at the sidewall of upper rhabd and lower rhabd, the inwall of upper rhabd and lower rhabd is respectively equipped with second check valve corresponding with air gate position and the 4th check valve, when head cap presses down, first check valve, 3rd closed check valve, second check valve, 4th one-way valve opens, the first cavity in the pump housing, gas in second cavity extrudes head cap by the hollow space of upper rhabd and lower rhabd, when head cap is up, first check valve, 3rd one-way valve opens, second check valve, 4th closed check valve, liquid sucks in the fluid chamber of blocking below.

As improvement, the described pump housing is made up of the large pump housing of cylindrical shape and the involutory little pump housing being arranged on undergauge below the large pump housing, and dividing plate is one-body molded in the middle part of the inner chamber of the large pump housing, between the lower end and the centre hole of dividing plate of upper rhabd, be provided with seal receptacle.

As improvement, the middle part of described dividing plate is provided with the annular groove with centre hole, and seal receptacle is the ferrule arrangement with bulge loop, sealed socket sleeve be located at upper rhabd lower end outside, be arranged in annular groove upper rhabd and dividing plate sealed.

As improvement, described first check valve and the 3rd check valve are set in outside upper rhabd and lower rhabd respectively, be respectively equipped with in the first check valve and the outside of the 3rd check valve tip-tilted with upper rhabd and the sealing surface of valve shape that offsets of the disc-shaped structure of lower rhabd coordinate with induction opening.

As improvement, described second check valve and the 4th check valve are respectively in sleeve-like configuration, the lower end of the second check valve and the 4th check valve is respectively equipped with the protuberance offseted with the inwall step surface of upper rhabd and lower rhabd, and the upper end of the second check valve and the 4th check valve is respectively equipped with the wide diameter portion sealed by air gate that to offset with the inwall of upper rhabd and lower rhabd.

Improve, described upper rhabd is provided with the return-air structure be connected with the 3rd cavity again, and the side, below upper rhabd being positioned at large lid is provided with a return-air hole, and the sidewall of upper rhabd is longitudinally provided with the gap that upper end communicates with return-air hole, bottom is connected with the 3rd cavity.

Improve again, described obstruction is arranged in the little pump housing, the outside blocked is arranged with the valve piston offseted with the inwall of the little pump housing, the I-shaped shape of sidepiece vertical section in upset of valve piston, the inboard of valve piston is embedded between the circular groove of obstruction and the bottom of lower rhabd, the outside of valve piston and the inwall of the little pump housing offset and seal, and the inboard valve of valve piston and annular groove bottom are fitted seal or disengaging, and the outside face milling of obstruction has air channel.

Improve, the upper end of described upper rhabd is provided with foam screen and lower foam screen successively, and wherein descend foam screen to be set in the upper end in the gas-liquid mixed chamber of upper rhabd, upper foam screen is coaxially arranged on above lower foam screen, between upper rhabd and head cap again.

Further improvement, described upper rhabd and lower rhabd the outward flange of disc-shaped structure and the inwall of the pump housing between be equipped with the first seal ring and the second seal ring.

Improve further again, the upper end of the described pump housing is provided with the edge of evagination, the corresponding annular slot being provided with indent inside the upper end of large lid, the pump housing is connected and fixed by the mode of clamping with large lid, and be provided with the 3rd seal ring in upper end, edge and between covering greatly, the lower end inside of large lid is provided with negative thread, covers the mode be threaded connection greatly and shell of tank is connected and fixed, and is lined with tightening seal washer at shell of tank and between covering greatly.

Compared with prior art, the utility model has the advantage of: the pump housing adopts double-decker, and corresponding upper rhabd and lower rhabd are set, the one-body molded disc-shaped structure had as piston on upper rhabd and lower rhabd, enormously simplify product structure, and assembling is also very convenient, compared with traditional individual layer pump housing, foam pump pressing stroke shortens half, like this under the prerequisite that pump housing external diameter is equal with dosage, single pressing distance doubly just can obtain double tolerance, thus obtains double dosage; In addition, be provided with seal receptacle, good seal performance, prevent upper rhabd and lower rhabd from motion process, causing the Leakage Gas of upper and lower air chamber; Be provided with return-air structure in the pump housing, make to guarantee that air enters during formation negative pressure.Not only compact conformation is reasonable for the utility model, good seal performance, and achieves heavy dose, substantially reduces the height of head cap, improves use practicality.

Accompanying drawing explanation

Fig. 1 be the utility model in off position under structural representation;

Fig. 2 be the utility model head cap press down bubble jet do well under structural representation;

Fig. 3 is STRUCTURE DECOMPOSITION figure of the present utility model;

Fig. 4 is gas of the present utility model turnover schematic diagram.

Detailed description of the invention

Below in conjunction with accompanying drawing embodiment, the utility model is described in further detail.

As shown in figures 1-4, the foam pump of the present embodiment, it comprises the pump housing 1, large lid 2, head cap 3, upper rhabd 4, the major parts such as lower rhabd 5 and foamed assembly, the pump housing 1, large lid 2, head cap 3, upper rhabd 4 and lower rhabd 5 all adopt PP plastics to make, the pump housing 1 is made up of the large pump housing 11 of cylindrical shape and the involutory little pump housing 12 being arranged on undergauge below the large pump housing 11, they can adopt the clamping of annular slot and annular card article or ultrasonic welding to be formed by connecting, the upper end of the large pump housing 11 is provided with the edge of evagination, the corresponding annular slot being provided with indent inside the upper end of large lid 2, the pump housing 1 with cover 2 greatly and be connected and fixed by the mode of clamping, and be provided with the 3rd seal ring 100 in upper end, edge and between covering 2 greatly, the lower end inside of large lid 2 is provided with negative thread, the mode that large lid 2 is threaded connection and shell of tank 102 are connected and fixed, and be lined with tightening seal washer 101 at shell of tank 102 and between covering 2 greatly, the lower end of the little pump housing 12 is connected with suction pipe 103, pellet seat 104 is provided with above suction pipe 103, pellet 109 is inside installed, form check valve, the inner chamber integral middle of the large pump housing 1 forms a dividing plate 111 and the pump housing 1 is divided into upper and lower two sheaf spaces, upper rhabd 4 and lower rhabd 5 are hollow structure, be separately positioned on, on lower two sheaf spaces, the lower end of upper rhabd 4 is located at the top of lower rhabd 5 through dividing plate 111 coaxial sleeve, clamping is coordinated to couple together by annular slot and annular card article, the upper end of upper rhabd 4 is connected with the clamping of head cap 3 phase, the lower end of lower rhabd 5 is connected with the obstruction 6 phase clamping being located at the little pump housing 12 internal upper part, seal receptacle 7 is provided with between the lower end of upper rhabd 4 and the centre hole of dividing plate 111, the middle part of dividing plate 111 is provided with the annular groove with centre hole, seal receptacle 7 is the ferrule arrangement with bulge loop, its effect plays sealing function in upper rhabd 4 up-and-down movement, seal receptacle 7 is set in the lower end outside of upper rhabd 4, be arranged in annular groove and upper rhabd 4 and dividing plate 111 are sealed,

Upper rhabd 4 has with the top of lower rhabd 5 is all one-body molded the disc-shaped structure 41 and 51 as piston matched with the inwall of the large pump housing 11, the first O-ring seals 110 and the second O-ring seals 107 is equipped with between the outward flange of disc-shaped structure 41 and 51 and the inwall of the large pump housing 11, between the disc-shaped structure 41 and dividing plate 111 of upper rhabd 4, the first cavity 13 is formed respectively successively between the disc-shaped structure 51 of dividing plate 111 and lower rhabd 5 and between the disc-shaped structure 51 of lower rhabd 5 and obstruction 6, 3rd cavity 15 and the second cavity 14, the disc-shaped structure 41 and 51 of upper rhabd 4 and lower rhabd 5 is respectively equipped with induction opening 411 and 511, cooperation first check valve 42 and the 3rd check valve 52 is respectively equipped with below disc-shaped structure 41 and 51, first check valve 42 and the 3rd check valve 52 adopt the valve on fixed cover to form, structure is simple, be active in one's movements, air gate 44 and 54 is respectively equipped with at the sidewall of upper rhabd 4 and lower rhabd 5, the inwall of upper rhabd 4 and lower rhabd 5 is respectively equipped with second check valve 43 corresponding with air gate 44 and 54 position and the 4th check valve 53, second check valve 43 and the 4th check valve 53 also adopt the valve on fixed cover to form, structure is simple, be active in one's movements, first check valve 42, second check valve 43, 3rd check valve 52 and the 4th check valve 53 are silica gel and make, the wherein similar of the first check valve 42 and the 3rd check valve 52, be set in outside upper rhabd 4 and lower rhabd 5 respectively, be respectively equipped with in the outside of the first check valve 42 and the 3rd check valve 52 and tip-tiltedly offset the sealing surface of the valve shape of inlet close with the disc-shaped structure 41 and 51 of upper rhabd 4 and lower rhabd 5, the similar of the second check valve 43 and the 4th check valve 53, respectively in sleeve-like configuration, with valve, the lower end of the second check valve 43 and the 4th check valve 53 is respectively equipped with the protuberance offseted with the inwall step surface of upper rhabd 4 and lower rhabd 5, the upper end of the second check valve 43 and the 4th check valve 53 is respectively equipped with the wide diameter portion sealed by air gate that to offset with the inwall of upper rhabd 4 and lower rhabd 5, form valve, when head cap 3 presses down, first check valve 42, 3rd check valve 52 is closed, second check valve 43, 4th check valve 53 is opened, the first cavity 13 in the pump housing 1, gas in second cavity 14 extrudes head cap 3 by the hollow space of upper rhabd 4 and lower rhabd 5, when head cap 3 is up, first check valve 42, 3rd check valve 52 is opened, second check valve 43, 4th check valve 53 is closed, liquid sucks in the fluid chamber 16 below obstruction 6,

When head cap 3 is descending, the volume of the 3rd cavity 15 widens, forming negative pressure needs extraneous gas to enter the 3rd cavity 15, and head cap 3 up time, the volume of the second cavity 14 widens and also forms negative pressure, also outside air is needed to enter the 3rd cavity 15, therefore on upper rhabd 4, be provided with the return-air structure be connected with the 3rd cavity 15, the side, below upper rhabd 4 being positioned at large lid 2 is provided with a return-air hole 45, the sidewall of upper rhabd 4 is longitudinally provided with upper end communicate with return-air hole 45, the gap 46 that bottom is connected with the 3rd cavity 15, when head cap 3 presses, between the upper end outer wall and waterproof case 8 of large lid 2, the lower end of head cap 3 and cover greatly the gap forming supplied gas between 2 and flow, the return-air of such 3rd cavity 15 enters along the sidewall gap 46 of the arrow circuit in Fig. 4 through upper rhabd 4, complete air inlet to be connected with the external world, block 6 and be arranged on the little pump housing 12 internal upper part, the outside blocking 6 is arranged with the valve piston 9 offseted with the inwall of the little pump housing 12, the I-shaped shape of sidepiece vertical section in upset of valve piston 9, the inboard of valve piston 9 is embedded between the circular groove of obstruction 6 and the bottom of lower rhabd 5, the outside of valve piston 9 and the inwall of the little pump housing 12 offset and seal, the inboard valve of valve piston 9 and annular groove bottom are fitted seal or disengaging, and the outside face milling of blocking 6 has air channel 61, the upper end of upper rhabd 4 is provided with foam screen 105 and lower foam screen 106 successively, foam screen 106 is wherein descended to be set in the upper end in the gas-liquid mixed chamber of upper rhabd 4, upper foam screen 105 is coaxially arranged on above lower foam screen 106, between upper rhabd 4 and head cap 3, the side of head cap 3 offers spout 31, anti-theft fastener 10 is also arranged with at head cap 7 and between covering 2 greatly, play anti-theft function, in addition head cap 3 and be supported with spring 108 between greatly cover 2, can automatically reset after head cap 3 pressing is loosed one's grip.

Principle of work and use procedure are such: when hand presses head cap 3, upper rhabd 4 and lower rhabd 5 is driven to move downward, the first check valve 42 on upper rhabd 4 and lower rhabd 5, the disc-shaped structure 41 and 51 of the 3rd check valve 52 and upper rhabd 4 and lower rhabd 5 offsets fitted seal, second check valve 43, 4th check valve 53 is opened, the first cavity 13 in the pump housing 1, gas in second cavity 14 extrudes head cap 3 by the hollow space of upper rhabd 4 and lower rhabd 5, obstruction 6 is descending under the promotion of lower rhabd 5, valve piston 9 is up relative to obstruction 6, depart from annular groove bottom, no longer fitted seal, make valve open, liquid extrudes head cap 3 from fluid chamber 16 by the hollow space of upper rhabd 4 and lower rhabd 5, liquid is along with from the first cavity 13, the gas that second cavity 14 blows out, through lower foam screen 106, upper foam screen 105 forms foam and blows out from shower nozzle 31,

When hand unclamps head cap 3, head cap 3 is up under the effect of spring 108, drive upper rhabd 4, lower rhabd 5 up, fluid chamber 16 pressure in the pump housing 1 reduces, and pellet 109 cannot seal up suction pipe 103, liquid in container enters into fluid chamber 16, first check valve 42, the 3rd check valve 52 are opened simultaneously, and the second check valve 43, the 4th check valve 53 are closed, and gas enters the first cavity 13 and the second cavity 14 from the external world, for preparing next time, cycle event just produces spray action successively.

Claims

1. a foam pump, it comprises the pump housing, large lid, head cap, foamed assembly, it is characterized in that: in the described pump housing, be divided into upper and lower two sheaf spaces by dividing plate, upper rhabd and the lower rhabd of hollow is respectively equipped with in upper and lower two sheaf spaces, the top that the lower end of upper rhabd is located at lower rhabd through diaphragm housing ring is connected, the upper end of upper rhabd is connected with head cap, the lower end of lower rhabd is connected with the obstruction being located at pump housing bottom, the disc-shaped structure as piston matched with the inwall of the pump housing is arranged at upper rhabd and the top of lower rhabd, between the disc-shaped structure and dividing plate of upper rhabd, the first cavity is formed between dividing plate and the disc-shaped structure of lower rhabd and between the disc-shaped structure of lower rhabd and obstruction, 3rd cavity and the second cavity, the disc-shaped structure of upper rhabd and lower rhabd is provided with induction opening, the first check valve and the 3rd check valve of cooperation is respectively equipped with below disc-shaped structure, air gate is respectively equipped with at the sidewall of upper rhabd and lower rhabd, the inwall of upper rhabd and lower rhabd is respectively equipped with second check valve corresponding with air gate position and the 4th check valve, when head cap presses down, first check valve, 3rd closed check valve, second check valve, 4th one-way valve opens, the first cavity in the pump housing, gas in second cavity extrudes head cap by the hollow space of upper rhabd and lower rhabd, when head cap is up, first check valve, 3rd one-way valve opens, second check valve, 4th closed check valve, liquid sucks in the fluid chamber of blocking below.

2. foam pump according to claim 1, it is characterized in that: the described pump housing is made up of the large pump housing of cylindrical shape and the involutory little pump housing being arranged on undergauge below the large pump housing, dividing plate is one-body molded in the middle part of the inner chamber of the large pump housing, between the lower end and the centre hole of dividing plate of upper rhabd, be provided with seal receptacle.

3. foam pump according to claim 2, it is characterized in that: the middle part of described dividing plate is provided with the annular groove with centre hole, seal receptacle is the ferrule arrangement with bulge loop, sealed socket sleeve be located at upper rhabd lower end outside, be arranged in annular groove upper rhabd and dividing plate sealed.

4. foam pump according to claim 1, it is characterized in that: described first check valve and the 3rd check valve are set in outside upper rhabd and lower rhabd respectively, be respectively equipped with in the first check valve and the outside of the 3rd check valve tip-tilted with upper rhabd and the sealing surface of valve shape that offsets of the disc-shaped structure of lower rhabd coordinate with induction opening.

5. foam pump according to claim 1, it is characterized in that: described second check valve and the 4th check valve are respectively in sleeve-like configuration, the lower end of the second check valve and the 4th check valve is respectively equipped with the protuberance offseted with the inwall step surface of upper rhabd and lower rhabd, and the upper end of the second check valve and the 4th check valve is respectively equipped with the wide diameter portion sealed by air gate that to offset with the inwall of upper rhabd and lower rhabd.

6. foam pump according to claim 1, it is characterized in that: described upper rhabd is provided with the return-air structure be connected with the 3rd cavity, the side, below upper rhabd being positioned at large lid is provided with a return-air hole, and the sidewall of upper rhabd is longitudinally provided with the gap that upper end communicates with return-air hole, bottom is connected with the 3rd cavity.

7. the foam pump according to the arbitrary claim of claim 1 to 6, it is characterized in that: described obstruction is arranged in the little pump housing, the outside blocked is arranged with the valve piston offseted with the inwall of the little pump housing, the I-shaped shape of sidepiece vertical section in upset of valve piston, the inboard of valve piston is embedded between the circular groove of obstruction and the bottom of lower rhabd, the outside of valve piston and the inwall of the little pump housing offset and seal, the inboard valve of valve piston and annular groove bottom are fitted seal or disengaging, and the outside face milling of obstruction has air channel.

8. the foam pump according to the arbitrary claim of claim 1 to 6, it is characterized in that: the upper end of described upper rhabd is provided with foam screen and lower foam screen successively, wherein descend foam screen to be set in the upper end in the gas-liquid mixed chamber of upper rhabd, upper foam screen is coaxially arranged on above lower foam screen, between upper rhabd and head cap.

9. the foam pump according to the arbitrary claim of claim 1 to 6, is characterized in that: be equipped with the first seal ring and the second seal ring between the outward flange of the disc-shaped structure of described upper rhabd and lower rhabd and the inwall of the pump housing.

10. the foam pump according to the arbitrary claim of claim 1 to 6, it is characterized in that: the upper end of the described pump housing is provided with the edge of evagination, the corresponding annular slot being provided with indent inside the upper end of large lid, the pump housing is connected and fixed by the mode of clamping with large lid, and be provided with the 3rd seal ring in upper end, edge and between covering greatly, the lower end inside of large lid is provided with negative thread, covers the mode be threaded connection greatly and shell of tank is connected and fixed, and is lined with tightening seal washer at shell of tank and between covering greatly.