Fine mist spraying pump core

Abstract

A mist spraying pump core comprises a pump body, the lower end of the pump body is connected with a suction pipe, and the mist spraying pump core is characterized in that a piston is arranged in the pump body, a valve rod is arranged at the upper end of the piston, a liquid outlet hole is formed in the middle of the valve rod, the upper end of the valve rod extends out of the pump body to be connected with a head cap, and a protruding column matched with the liquid outlet hole of the valve rod is arranged at the upper end of the piston. A valve structure is arranged on the outer wall of the piston and tightly attached to the inner wall of the pump body for sealing, a liquid storage cavity is formed in the pump body and at the lower end of the piston, and a spring is supported between the lower end of the piston and the inner wall of the lower end of the pump body, so that the piston always moves upwards to close the liquid outlet hole. The utility model has the advantages of strong structure explosive power, few parts, quickness and convenience in assembly, capability of meeting the requirement of superfine spraying, small volume and convenience in carrying.

Description

Technical Field

[0001] The utility model belongs to the technical field of daily cosmetics and relates to a sprayer, in particular to a fine mist spray pump core used for cosmetic bottles. Background Art

[0002] Cosmetics refer to chemical industrial products or fine chemical products that are spread on any part of the human body surface, such as skin, hair, nails, lips and teeth, by smearing, spraying or other similar methods, for the purpose of cleaning, maintenance, beautification, modification and change of appearance, or correction of human body odor and maintenance of good condition. Cosmetics are in liquid, powder and paste forms. Among them, emulsion or latex cosmetics, such as skin care lotion and foundation cream, are usually packed in special bottles and are used by pressing the pressure head to squeeze the emulsion out of the nozzle. For some cosmetics, a smaller amount is needed when using, so a very fine spray is required.

[0003] The traditional sprayer industry usually relies on improvements in the spray piece and flow channel, such as further reducing the size of the sprayer nozzle, but the effect is not very ideal. In addition, the existing products are large in size and not convenient to carry around. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a fine mist spray pump core with strong explosive force, finer mist and fewer product accessories in view of the above technical status quo.

[0005] The technical solution adopted by the utility model to solve the above technical problems is: a fine mist spray pump core, including a pump body, the lower end of the pump body is connected to a suction tube, and is characterized in that: a piston is arranged in the pump body, a valve stem is arranged at the upper end of the piston, a liquid outlet hole is opened in the middle of the valve stem, the upper end of the valve stem extends out of the pump body and is connected to the head cap, a convex column is arranged at the upper end of the piston to match the liquid outlet hole of the valve stem, a valve structure is arranged on the outer wall of the piston to seal tightly with the inner wall of the pump body, a liquid storage cavity is formed in the pump body and at the lower end of the piston, a spring is supported between the lower end of the piston and the inner wall of the lower end of the pump body, so that the piston has a tendency to always move upward to close the liquid outlet hole;

[0006] The pump body is divided into a plurality of sections with a diameter that decreases downwards, and correspondingly, the valve structure on the outer wall of the piston has a plurality of sections that cooperate and seal with the inner wall of the pump body.

[0007] As an improvement, the pump body is a sleeve-like structure with upper and lower openings. A blind cover for limiting the valve stem is provided on the inner side of the upper opening of the pump body. The blind cover is a circular cover corresponding to the upper opening of the pump body. A circle of positioning convex ribs is provided in the middle of the outer circumference of the blind cover, and a corresponding circle of concave ribs is formed on the inner wall of the upper end of the pump body. The blind cover is arranged at the opening position of the pump body through the cooperation of the positioning convex ribs and the concave ribs, and a through hole is provided in the middle of the blind cover for the upper end of the valve stem to pass through.

[0008] Furthermore, the valve stem is in an inverted T-shaped structure, and the valve stem is divided into two parts, the upper part is a hollow straight rod, the straight rod extends out of the pump body and is connected to the head cap, and the lower part is a circular cover, and the lower end surface of the circular cover is formed with a circle of convex rings around the outside of the liquid outlet, and the piston is a cylindrical structure with an opening at the lower end. The middle part of the upper end surface of the piston is provided with a conical convex column that cooperates with the convex ring of the valve stem and the liquid outlet, and the upper outer edge of the piston is provided with an upper valve extending upward and outward, and an annular groove for inserting the upper valve is formed between the outer ring of the circular cover of the valve stem and the convex ring, and a limiting convex rib for limiting the upper valve is formed on the inner wall of the lower end of the outer ring.

[0009] Furthermore, the pump body is divided into 3 to 5 sections with a diameter that decreases downward, the valve structure on the outer wall of the piston is inclined downward and outward, and the valve structure is composed of 2 to 3 sections that cooperate with the inner wall of the pump body.

[0010] Furthermore, the pump body is divided into five sections with a diameter that tapers downwards, the lowest section being a plug-in section for plugging in a straw, and the valve structure on the outer wall of the piston is divided into two sections, which are respectively in close contact with the inner walls of the second and third sections of the pump body.

[0011] Furthermore, a plurality of longitudinal ridges are formed at annular intervals on the upper portion of the inner wall of the piston, a gap for liquid flow is provided between the top surface of the inner wall of the piston and the upper end surface of the piston, the upper end of the spring is inserted into the lower opening of the piston and abuts against the lower end of the longitudinal ridge, and the lower end of the spring abuts against and supports the step surface of the lower end of the inner wall of the pump body.

[0012] Finally, a marble is arranged at the position of the liquid inlet in the pump body, and the marble cooperates with the inner wall of the pump body to form a one-way valve.

[0013] Compared with the prior art, the advantages of the utility model are as follows: a piston and a valve stem are arranged in the pump body, when the head cap is pressed to drive the valve stem and the piston to move downward, the liquid in the liquid storage chamber in the pump body passes upward through the gap of the piston, the pressure above the piston increases, the piston moves downward, the liquid outlet hole opens, and the liquid sprays out, when the pressure above the piston decreases to a certain value, the piston moves upward under the action of the spring, and the liquid outlet hole closes, at which time the marble opens instantly, and the liquid enters the liquid storage chamber from the straw; the multi-stage structure piston and pump body design has stronger explosive power, the aperture of the liquid outlet hole of the valve stem is smaller, and the effect of the spray piece on the head cap makes the spray finer, meeting the requirements of fine mist spray. The utility model has strong explosive power, few product accessories, quick and convenient assembly, can meet the requirements of ultra-fine spray, and is small in size and easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;

[0015] Figure 2 This is one of the state diagrams of the embodiment of the utility model;

[0016] Figure 3 This is one of the state diagrams of the embodiment of the utility model;

[0017] Figure 4 It is a structural exploded view of an embodiment of the utility model; DETAILED DESCRIPTION

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 4 As shown, a fine mist spray pump core includes a pump body 1, the lower end of the pump body 1 is connected to a suction tube, a piston 2 is arranged in the pump body 1, a valve stem 3 is arranged on the upper end of the piston 2, a liquid outlet 31 is opened in the middle of the valve stem 3, the upper end of the valve stem 3 extends out of the pump body 1 and is connected to the head cap, the upper end of the piston 2 is provided with a convex column 21 which cooperates with the liquid outlet 31 of the valve stem 3, the outer wall of the piston 2 is provided with a valve structure 24 which is tightly sealed with the inner wall of the pump body 1, a liquid storage chamber A is formed in the pump body 1 and at the lower end of the piston 2, a spring 5 is supported between the lower end of the piston 2 and the inner wall of the lower end of the pump body 1, so that the piston 2 has a tendency to always move upward to close the liquid outlet 31; the pump body 1 is divided into a plurality of sections with a diameter that decreases downward, and correspondingly, the valve structure 24 on the outer wall of the piston 2 has a plurality of sections which cooperate with the inner wall of the pump body to seal, and usually the number of sections of the valve structure 24 can be less than the number of sections of the pump body 1.

[0020] The specific structure is as follows: the pump body 1 is a sleeve-like structure with upper and lower openings, and a blind cover 4 for limiting the valve stem 3 is provided on the inner side of the upper opening of the pump body 1. The blind cover 4 is a circular cover corresponding to the upper opening of the pump body 1, and a circle of positioning convex ribs 41 is provided in the middle of the outer circumference of the blind cover 4. A corresponding circle of concave ribs 11 is formed on the inner wall of the upper end of the pump body 1. The blind cover 4 is arranged at the opening position of the pump body 1 through the cooperation of the positioning convex ribs 41 and the concave ribs 11, and is basically flush with the upper end surface of the pump body 1, and a through hole for the upper end of the valve stem 3 to pass through is opened in the middle of the blind cover 4. The valve stem 3 is in an inverted T-shaped structure, and the valve stem is divided into two parts, the upper part is a hollow straight rod 34, the straight rod 34 extends out of the pump body 1 and is connected to the head cap, and the lower part is a circular cover 35, and the lower end surface of the circular cover 35 is formed with a circle of convex ring 36 around the outer side of the liquid outlet 31. The piston 2 is a cylindrical structure with an open lower end. The middle part of the upper end surface of the piston 2 is provided with a conical convex column 21 that cooperates with the convex ring of the valve stem 3 and the liquid outlet 31. The upper outer edge of the piston 2 is provided with an upper valve 22 extending upward and outward. An annular groove 32 for inserting the upper valve 22 is formed between the outer ring of the circular cover of the valve stem 3 and the convex ring, and a limiting convex rib 33 for limiting the upper valve 22 is formed on the inner wall of the lower end of the outer ring.

[0021] The pump body 1 is divided into 3 to 5 sections with a diameter that decreases downwards. In this embodiment, there are 5 sections. The lowest section is a plug-in section for inserting a straw. The valve structure 24 on the outer wall of the piston 2 is inclined downward and outward. The valve structure 24 is 1 to 2 sections that match the inner wall of the pump body 1. In this embodiment, there are two sections, which are respectively in close contact with the inner walls of the second and third sections of the pump body 1. The upper part of the inner wall of the piston 2 is formed with a plurality of longitudinal ridges 25 at intervals in an annular direction. A gap 23 for liquid flow is provided between the top surface of the inner wall of the piston 2 and the upper end surface of the piston 2. The upper end of the spring 5 is inserted into the lower opening of the piston 2 and abuts against the lower end of the longitudinal ridge 25. The lower end of the spring 5 abuts against the step surface of the lower end of the inner wall of the pump body 1 for support.

[0022] A marble 6 is provided at the position of the liquid inlet in the pump body 1, and the marble 6 cooperates with the inner wall of the pump body 1 with a gap to form a one-way valve.

[0023] like Figure 2 , 3 When in use, press the head cap downward, the valve stem 3 moves downward, driving the piston 2 to move downward, and the liquid in the liquid storage chamber A in the pump body 1 passes upward through the gap of the piston 2. The pressure above the piston 2 increases, the piston 2 moves downward, the liquid outlet hole 31 opens, and the liquid sprays out. When the pressure above the piston 2 decreases to a certain value, the piston 2 moves upward under the action of the spring 5, and the liquid outlet hole 31 is closed. At this time, the marble 6 opens instantly, and the liquid enters the liquid storage chamber A from the straw.

[0024] Since this embodiment adopts a multi-stage structure piston and pump body, the pump core has a stronger explosive force. Combined with the smaller aperture of the liquid outlet hole 31 of the valve stem 3 and the spray piece on the head cap, the spray is finer and meets the requirements of fine mist spray.

[0025] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A fine mist spray pump core, comprising a pump body, the lower end of which is connected to a suction tube, characterized in that: The pump body is provided with a piston, the upper end of the piston is provided with a valve stem, the middle part of the valve stem is provided with a liquid outlet, the upper end of the valve stem extends out of the pump body and is connected to the head cap, the upper end of the piston is provided with a convex column that matches the liquid outlet of the valve stem, the outer wall of the piston is provided with a valve structure that is tightly sealed with the inner wall of the pump body, the pump body and the lower end of the piston form a liquid storage cavity, and a spring is supported between the lower end of the piston and the inner wall of the lower end of the pump body, so that the piston has a tendency to always move upward to close the liquid outlet; The pump body is divided into a plurality of sections with a diameter that decreases downwards, and correspondingly, the valve structure on the outer wall of the piston has a plurality of sections that cooperate and seal with the inner wall of the pump body.

2. The fine mist spray pump core according to claim 1, characterized in that: The pump body is a sleeve-like structure with upper and lower openings. A blind cover for limiting the valve stem is provided on the inner side of the upper opening of the pump body. The blind cover is a circular cover corresponding to the upper opening of the pump body. A circle of positioning convex ribs is provided in the middle of the outer circumference of the blind cover, and a corresponding circle of concave ribs is formed on the inner wall of the upper end of the pump body. The blind cover is arranged at the opening position of the pump body through the cooperation of the positioning convex ribs and the concave ribs, and a through hole for the upper end of the valve stem to pass through is opened in the middle of the blind cover.

3. The fine mist spray pump core according to claim 2, characterized in that: The valve stem is in an inverted T-shaped structure, and is divided into two parts, the upper part is a hollow straight rod, which extends out of the pump body and is connected to the head cap, and the lower part is a circular cover. The lower end surface of the circular cover is formed with a circle of convex rings around the outer side of the liquid outlet. The piston is a cylindrical structure with an open lower end. The middle part of the upper end surface of the piston is provided with a conical convex column that cooperates with the convex ring of the valve stem and the liquid outlet. The upper outer edge of the piston is provided with an upper valve membrane extending upward and outward, and an annular groove for inserting the upper valve membrane is formed between the outer ring of the circular cover of the valve stem and the convex ring. A limiting convex rib for limiting the upper valve is formed on the inner wall of the lower end of the outer ring.

4. The fine mist spray pump core according to claim 3, characterized in that: The pump body is divided into 3 to 5 sections with a diameter that decreases downwards, and the valve structure on the outer wall of the piston is inclined downwards and outwards, and the valve structure is composed of 2 to 3 sections that match the inner wall of the pump body.

5. The fine mist spray pump core according to claim 4, characterized in that: The pump body is divided into five sections with a diameter that decreases downwards, the lowest section is a plug-in section for plugging a straw, and the valve structure on the outer wall of the piston is divided into two sections, which are respectively tightly attached to the inner walls of the second section and the third section of the pump body.

6. The fine mist spray pump core according to claim 4, characterized in that: A plurality of longitudinal ridges are formed at intervals in annular direction on the upper inner wall of the piston, a gap for liquid flow is provided between the top surface of the inner wall of the piston and the upper end surface of the piston, the upper end of the spring is inserted into the lower opening of the piston and abuts against the lower end of the longitudinal ridge, and the lower end of the spring abuts against and supports the step surface of the lower end of the inner wall of the pump body.

7. The fine mist spray pump core according to any one of claims 1 to 6, characterized in that: A marble is arranged at the position of the liquid inlet in the pump body, and the marble cooperates with the inner wall of the pump body with a gap to form a one-way valve.

Images