Liquid pump head with self-sealing head cap and external spring

Abstract

The utility model relates to a head cap self-sealing type liquid pump head with an external spring. The liquid pump head is designed for solving the technical problems that a spring in a self-sealing structure of an existing like product is poor in sealing effect and single in linkage mode. According to the key points, a piston ring is arranged on the outer diameter of a head cap needle of the pump head, the large outer diameter of one end of a nozzle at a liquid outlet hole in a pressing cap is larger than the small outer diameter of the other end of the nozzle in the pressing cap, a through hole is formed in at least one side of the small outer diameter of the nozzle in the pressing cap, and a hole opening in the other end of the nozzle is sleeved with a spring cavity in the pressing cap in a sealed mode. The spring is sealed in a sealed spring cavity formed between a piston ring of the head cap needle and a spring cavity in the pressing cap; a gap channel communicated with a liquid inlet hole in the pressing cap is arranged between the outer diameter of the head cap needle at a spray hole in the nozzle and the inner wall of the nozzle; the other end of the head cap needle in the liquid outlet hole of the pressing cap extends out of the liquid outlet cavity in the pressing cap, inclined face grooves are symmetrically formed in the two sides of the extending section of the end, and symmetrical and protruding inclined face columns are correspondingly arranged on one side of the top of the lining in the pressing cap below the inclined face grooves.

Description

TECHNICAL FIELD

[0001] The utility model relates to the pump head of emulsion bottle, and is a head cap self-sealing type spring external liquid pump head. BACKGROUND

[0002] The emulsion bottle is a kind of micro-sprayer for storing and extruding emulsion, which is mainly used for accessing emulsion, especially cosmetic emulsion, and it is generally composed of outer cover, head cap, pump core, large circle and bottle body, and the pump head generally refers to the main body formed by omitting the main components after bottle body.Some pump heads of the emulsion bottle of the prior art are provided with self-sealing structure, i.e., a plug or valve core is arranged in the nozzle, and when the head cap is pressed, the plug or valve core in the nozzle is retracted with the pressing of the head cap and is extended with the resetting of the head cap;For example, the patent document CN 202122591658.2, published on June 10, 2022, discloses a self-sealing pressing discharge button and pressing pump;However, the limiting rod of the above structure is arranged on the valve rod, and the second inclined surface is also arranged on the end of the limiting rod, the first inclined surface corresponding to the second inclined surface is arranged on the outer diameter of the plug in the nozzle, and the structure design will affect the liquid discharge effect between the valve rod and the head cap, and the spring in the pump head is easily contaminated and reacted by liquid. SUMMARY

[0003] To overcome the above shortcomings, the utility model aims to provide a head cap self-sealing type spring external liquid pump head to the field, which solves the technical problems of poor sealing effect of the spring in the self-sealing structure of the existing similar products and single linkage mode.

[0004] The application discloses a head cap self-sealing spring external liquid pump head, a pump core assembly is fixedly buckled in the center hole of a large ring, the bottom of the pump body of the pump core assembly is provided with a suction pipe, one end of the valve rod of the pump core assembly extends out of the large ring and is connected with the liquid inlet hole in the bottom of the cap through an inner liner, a nozzle, a head cap needle and a spring are arranged in the liquid outlet hole of the cap, one end of the head cap needle in the liquid outlet hole of the cap is sealed in the spray hole of the nozzle through the spring, the liquid outlet hole in the cap is integrally communicated with the liquid outlet hole and is in L shape, the inner liner is fixedly buckled in the cap, and the inner liner is integrated with the cap. The structure design points are as follows: the outer diameter of the head cap needle is provided with a piston ring, the outer diameter of one end of the nozzle in the liquid outlet hole of the cap is larger than that of the other end of the nozzle in the cap, at least one side of the small outer diameter of the nozzle in the cap is provided with a through hole, the other end of the nozzle is sealed in the spring cavity in the cap, the outer diameter of the head cap needle in the spring cavity of the cap is in abutment with the abutment of the head cap needle, the other end of the spring is in abutment with the piston ring of the head cap needle in the small outer diameter of the nozzle, the spring is sealed in the sealing spring cavity formed between the piston ring of the head cap needle and the spring cavity in the cap, and the outer diameter of the head cap needle in the spray hole of the nozzle is provided with a gap channel communicated with the liquid inlet hole in the cap. The other end of the head cap needle in the liquid outlet hole of the cap extends out of the liquid outlet cavity in the cap, the extension section of the other end is provided with inclined grooves on both sides, the inner liner in the cap is provided with inclined column on one side of the top of the inner liner, the first inclined surface of the inclined column of the inner liner is in abutment with the second inclined surface of the inclined groove of the head cap needle, and the head cap needle is continuously moved to the inner side, the head cap needle is separated from the spray hole in the nozzle, the liquid in the cap enters the gap channel in the nozzle through the small outer diameter of the nozzle and the through hole of the nozzle, and the liquid flows out of the nozzle. When the cap is loosened, the head cap needle is reset through the spring effect and is in abutment with the spray hole of the nozzle.

[0005] The inner liner is fixedly buckled in the cap through the clamping groove of the outer diameter and the clamping rib of the inner diameter.

[0006] The inclined column of the inner liner is replaced by an inclined taper, the inclined groove of the corresponding head cap needle is replaced by an inclined hole, and the inclined taper of the inner liner is inserted into the inclined hole of the head cap needle when the cap is pressed.

[0007] The inclined column or the inclined taper of the inner liner is arranged on one side of the top of the cap, and the inclined column or the inclined taper of the top of the cap is inserted into the inclined groove or the inclined hole of the head cap needle when the cap is pressed.

[0008] The outer diameter of the extension end of the valve rod of the pump core assembly is provided with a pump core spring, one end of the pump core spring is in abutment with the clamping rib of the outer diameter of the top hole of the valve rod, the other end of the pump core spring is in abutment with the inner plug at the pump port of the pump body, the valve needle in the pump body is buckled with the valve rod and is provided with a small piston in the outer diameter, and the hole in the bottom of the pump body below the small piston is provided with a spring sleeve.

[0009] The utility model discloses rational structure design, and production, use is convenient and simple, and the leakproofness, stability are good, and it is suitable as the head cap self-sealing type spring external liquid pump head of cosmetic bottle such as emulsion bottle and uses, and its similar product's structure improvement. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is the embodiment cross section structure schematic diagram of the utility model, and the inclined surface column of the inclined surface groove and corresponding lining at the two sides of the head cap needle in the figure is a dotted line.

[0011] Figure 2 It is the press device cross section structure schematic diagram of Figure 1 .

[0012] Figure 3 It is the inclined surface column and the inclined surface groove linkage state overhead structure schematic diagram of Figure 1 the lining at the two sides of the head cap needle.

[0013] Figure 4 It is the rear view structure schematic diagram of Figure 3 , and the straw and press cap are omitted in the figure.

[0014] Figure 5 It is the improved structure schematic diagram of Figure 1 .

[0015] Drawing serial number and name: 1, press cap, 2, nozzle, 201, through-hole, 3, head cap needle, 301, piston ring, 302, inclined surface groove, 4, spring, 5, lining, 501, inclined surface column, 502, clamping groove, 6, outer ring, 7, big ring, 8, pump core group stands, 9, straw. DETAILED DESCRIPTION

[0016] Now, the structure of the utility model is further described in combination with the drawings. Figures 1-4As shown, the pump core assembly 8 of the pump head is fixedly buckled in the center hole of the large ring 7, the pump body bottom of the pump core assembly is provided with a suction pipe 9, the valve rod of the pump core assembly extends out of the large ring and is connected with the liquid inlet hole in the inner bottom of the cap 1 through the inner liner 5, the nozzle 2, the head cap needle 3 and the spring 4 are arranged in the liquid outlet hole of the cap, the head cap needle is sealed in the spray hole of the nozzle by the spring at one end of the liquid outlet hole of the cap, the liquid outlet hole in the cap is in L-shaped integral communication with the liquid outlet hole, the inner liner is buckled and fixed in the cap, and the inner liner and the cap are integrated. The outer diameter of the head cap needle is provided with a piston ring 301, the outer diameter of the nozzle at one end of the liquid outlet hole in the cap is larger than that of the nozzle at the other end of the liquid outlet hole in the cap, at least one side of the small outer diameter of the nozzle in the cap is provided with a through hole 201, the other end of the nozzle is sealed into the spring cavity in the cap, the outer diameter of the head cap needle in the spring cavity of the cap is in abutment with the inner wall of the spring cavity at the extension position of the head cap needle, the other end of the spring is in abutment with the piston ring of the head cap needle on the inner wall of the small outer diameter of the nozzle at the through hole, and the spring is sealed in the sealing spring cavity formed between the piston ring of the head cap needle and the spring cavity in the cap. The outer diameter of the head cap needle at the spray hole of the nozzle is provided with a gap channel in communication with the liquid inlet hole in the cap. The other end of the head cap needle extends out of the liquid outlet cavity in the cap, the extension section of the end is provided with a slope groove 302 on both sides, and the inner liner in the cap is provided with a slope column 501 on one side of the top corresponding to the slope groove. The protruding hole of the inner liner at the middle top and the bottom is respectively buckled with the liquid inlet hole of the cap and the valve rod, and the inner liner is buckled and fixed on the protruding clamping rib of the inner diameter of the cap bottom through the clamping groove 502 of the outer diameter. The outer diameter of the extension end of the valve rod of the pump core assembly is provided with a pump core spring, one end of the pump core spring is in abutment with the protruding rib of the outer diameter of the hole at the top of the valve rod, and the other end of the pump core spring is in abutment with the inner plug at the pump port of the pump body, the valve needle in the pump body is buckled with the valve rod and is provided with a small piston in outer diameter, and the hole at the bottom of the pump body below the small piston is provided with a spring sleeve.

[0017] When the cap is pressed, the first slope of the slope column of the inner liner is in abutment with the second slope of the slope groove of the head cap needle, and the head cap needle continues to move inward, the head cap needle is separated from the spray hole in the nozzle, the liquid entering the cap flows from the small outer diameter of the nozzle, the through hole of the nozzle and the gap channel in the nozzle, and then flows out of the spray hole of the nozzle.

[0018] According to the above structural characteristics, as shown, Figure 5 As shown, the slope column of the inner liner is replaced by a slope cone, and the slope groove of the corresponding head cap needle is replaced by a slope hole. When the cap is pressed, the slope cone of the inner liner is inserted into the slope hole of the head cap needle. Alternatively, the slope column or the slope cone of the inner liner is arranged on one side of the top of the cap. When the cap is pressed, the slope column or the slope cone of the top of the cap is inserted into the slope groove or the slope hole of the head cap needle.

[0019] The pump head is a kind of through mechanism activity traction spring, make head cap needle open or close, thereby realize the function of self-sealing liquid, spring does not contact liquid.The inner lining of the pump head is tightly fitted with the cap, and the inner lining moves up and down together with the cap when pressed downward, the inclined surface of the inner lining is in contact with the inclined surface of the head cap needle, at this time, the force of pressing downward drives the spring to stretch backward, the head cap needle and the nozzle are in an open state, and the liquid partially flows out, after springback reset, the nozzle and the head cap needle are sealed to play the role of self-sealing liquid, in the above structure, the spring does not contact the liquid, which ensures the cleanliness and environmental protection of the liquid.

Claims

1. A head cap self-sealing spring external liquid pump head, the pump core assembly (8) of the pump head is clamped and fixed in the center hole of the large ring (7), the pump body bottom of the pump core assembly is provided with a suction pipe (9), the valve rod of the pump core assembly extends out of the large ring, and is connected with the liquid inlet hole in the inner bottom of the pressing cap (1) through the inner liner (5). The nozzle (2), the head cap needle (3) and the spring (4) are arranged in the liquid outlet hole of the pressing cap. One end of the head cap needle in the liquid outlet hole of the pressing cap is sealed in the spray hole in the nozzle through the spring. The liquid outlet hole in the pressing cap and the liquid outlet hole are integrally communicated in an L shape. The inner liner is clamped and fixed in the pressing cap, and the inner liner and the pressing cap are integrated; characterized in that The outer diameter of the head cap needle (3) is provided with a piston ring (301), the large outer diameter of one end of the nozzle (2) at the liquid outlet hole in the cap (1) is greater than the small outer diameter of the other end of the nozzle in the cap, at least one side of the small outer diameter of the nozzle in the cap is provided with a through hole (201), the other end of the nozzle is sealed into the spring cavity in the cap, the outer diameter of the spring (4) in the cap is in contact with the inner wall of the spring cavity of the head cap needle, the other end of the spring is in contact with the piston ring of the head cap needle, and the spring is sealed in the sealing spring cavity between the piston ring of the head cap needle and the spring cavity in the cap. The outer diameter of the head cap needle at the nozzle hole in the nozzle is provided with a gap channel communicated with the liquid inlet hole in the cap.

2. The headgear self-contained spring-mounted liquid pump head of claim 1, wherein The other end of the head cap needle extends out of the liquid outlet cavity in the cap, and the two sides of the extension section of the end are provided with inclined grooves (302) symmetrically, and the top of the inner lining in the cap is provided with inclined columns (501) symmetrically and protruding on one side.

3. The headgear self-contained spring-mounted liquid pump head of claim 1, wherein When the cap is pressed, the first inclined surface of the inclined column of the inner lining is in contact with the second inclined surface of the inclined groove of the head cap needle, and the head cap needle is continuously moved inward, the head cap needle is separated from the nozzle hole in the nozzle, the liquid in the cap enters the gap channel in the nozzle through the small outer diameter outside the nozzle and the through hole of the nozzle, and flows out from the nozzle hole.

4. The headgear self-contained spring-mounted liquid pump head of claim 3, wherein The inclined column (501) of the inner lining (5) is replaced by an inclined cone, and the inclined groove (302) of the corresponding head cap needle (3) is replaced by an inclined hole.

5. The headgear self-contained spring-loaded liquid pump head of claim 1, wherein The inclined column (501) or the inclined cone of the inner lining (5) is arranged on one side of the top of the cap (1), and when the cap is pressed, the inclined column or the inclined cone of the top of the cap is inserted into the inclined groove or the inclined hole of the head cap needle (3). The outer diameter of the valve rod of the pump core assembly (8) is provided with a pump core spring, one end of the pump core spring is in contact with the convex rib of the outer diameter of the top hole of the valve rod, and the other end of the pump core spring is in contact with the inner plug of the pump port of the pump body. The valve needle in the pump body is buckled with the valve rod, and the outer diameter is provided with a small piston.

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