Continuous spraying head

Abstract

A continuous spraying head comprises a pump body, a piston rod is arranged in the pump body, the upper end of the piston rod is connected with a head cap seat in an involution mode, the upper end of the head cap seat is connected with a head cap, the lower end of the piston rod is provided with a liquid inlet, the upper end of the head cap seat is provided with a liquid outlet, and a continuous pressure pipe is arranged in a cavity formed by involution of the piston rod and the head cap seat. A valve block matched with the liquid inlet is arranged in the piston rod and below the pressure continuing pipe, a lower piston is arranged at the lower end of the piston rod, the outer wall of the lower piston is tightly attached to the inner wall of the pump body in a sealed mode, a liquid storage cavity is formed between the lower end of the lower piston and the inner wall of the pump body, and a lower valve is arranged between the lower end of the lower piston and the inner wall of the pump body. A spraying cavity is formed below the upper piston in the continuous pressure pipe, a first spring is arranged on the piston rod head cap seat, and a second spring is supported at the lower end of the upper piston. The cosmetic container is simple and reasonable in structure, convenient to assemble, capable of meeting the requirement for continuous spraying and suitable for containing liquid cosmetics.

Description

Technical Field

[0001] The utility model belongs to the technical field of daily cosmetics and relates to a continuous spray nozzle used for a cosmetic bottle. 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, in order to achieve the purpose of cleaning, maintenance, beautification, modification and change of appearance, or correction of human body odor and maintaining 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, they need to be used in a continuous spraying manner. However, the existing products have poor spraying continuity, which affects the spraying effect.

[0003] After investigation, the existing Chinese patent number CN202220040500.8 "A sprayer with continuous spray function" includes a container, a spray shell and an inner tube body. The container is provided with a spray shell, and the inner tube body is provided with an inner tube body. The inner tube body is provided with a straw, and the straw is arranged in the container; it also includes a button assembly, a mounting plate and a pressing block. The button assembly includes a button block and a rotating block. The button block and the rotating block are connected. The inner tube body is provided with a mounting plate, and the rotating block and the mounting plate are hinged. There is also a pressing block on the rotating block. This sprayer has improved structural stability and assembly speed, but it does not explain continuous spraying, and the structure needs further improvement. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a continuous spray nozzle which has a simple and reasonable structure, is easy to assemble and can realize continuous spraying 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 continuous spray nozzle, including a pump body, the upper end of the pump body is fixed in the bottle cap, the lower end of the pump body is connected with a straw, and the characteristics are: a piston rod is arranged in the pump body, a head cap seat is matched and connected at the upper end opening of the piston rod, the upper end of the head cap seat is connected with the head cap, a liquid inlet is arranged at the lower end of the piston rod, a liquid outlet is arranged at the upper end of the head cap seat, a continuous pressure tube is arranged in the cavity formed by the piston rod and the head cap seat, an upper piston is arranged at the upper end of the continuous pressure tube, the outer wall of the upper piston is sealed against the inner wall of the continuous pressure tube, and the upper end of the upper piston is penetrated The pressure-continuing tube is sealed with the switch of the liquid outlet. An upper valve cooperating with the liquid inlet is provided in the piston rod and below the pressure-continuing tube. A lower piston is provided at the lower end of the piston rod. The lower piston has a central inner hole corresponding to the liquid inlet. The outer wall of the lower piston is tightly sealed with the inner wall of the pump body. A liquid storage chamber is formed between the lower end of the lower piston and the inner wall of the pump body, and a lower valve is provided. An injection chamber is formed in the pressure-continuing tube and above the upper piston. A first spring is provided on the piston rod head cap seat, so that the piston rod has a tendency to move upward all the time. The lower end of the upper piston is supported by a second spring, so that the upper piston has a tendency to always close the liquid outlet upward.

[0006] As an improvement, the pump body is a cylindrical structure with upper and lower openings, the bottle cap has an internal thread section threadedly connected to the bottle body, an annular groove is provided on the inner wall of the bottle cap and the upper end of the internal thread section, the upper end opening of the pump body is provided with an upper edge extending horizontally outward, the outer peripheral surface of the upper edge is formed with a positioning convex edge that cooperates with the annular groove, the upper end of the pump body is inserted into the bottle cap and positioned by the cooperation of the positioning convex edge and the annular groove.

[0007] Furthermore, the pump body is divided into four sections with decreasing diameters downward, wherein the lowest section is a plug-in section for plugging in a straw, a lower piston is arranged at the lower end of a piston rod, and an outer wall of the lower piston is tightly sealed against an inner wall of the third section of the pump body.

[0008] Furthermore, the head cap seat is a circular ring, which is divided into three sections with decreasing diameters from bottom to top, wherein the upper section is connected to the head cap, and a liquid outlet connected to the head cap discharge channel is opened at the top of the upper section, the inner diameter of the middle section matches the outer diameter of the continuous pressure tube, and the inner diameter of the lower section matches the upper outer diameter of the piston rod; a circle of retaining ring is convexly provided at the upper and middle position of the outer circumference of the piston rod, and the outer diameter of the retaining ring is smaller than the inner diameter of the upper section of the pump body and larger than the inner diameter of the second section of the pump body. The first spring is sleeved outside the piston rod and supported between the lower end of the retaining ring and the step surface between the second and third sections of the pump body. Annular convex ribs are formed on the outer circumference of the piston rod and above the retaining ring. A lower edge that cooperates with the retaining ring of the piston rod is provided at the lower end opening of the head cap seat, and an annular concave rib corresponding to the annular convex rib of the piston rod is formed on the inner wall of the lower section of the head cap seat. The head cap seat is sleeved on the piston rod and connected to the piston rod through the cooperation of the annular concave rib and the annular convex rib.

[0009] Furthermore, the lower inner part of the piston rod is provided with a reducing step which abuts against the lower end of the pressure-continuing tube, the lower end of the pressure-continuing tube is arranged on the reducing step, the upper end of the pressure-continuing tube is inserted into the middle section of the head cap seat and abuts against the top surface of the middle section, a convex column is formed on the upper end of the upper piston, and a center hole is provided in the middle of the upper end surface of the pressure-continuing tube for the convex column of the upper piston to extend out, the upper piston is arranged in the pressure-continuing tube, and the convex column of the upper piston passes through the center hole of the pressure-continuing tube and is inserted into the liquid outlet of the head cap seat.

[0010] Furthermore, a blind cover is provided on the inner wall of the upper end of the pump body. The blind cover is a circular ring structure. The outer diameter of the blind cover is consistent with the inner diameter of the upper end of the pump body. A circle of positioning convex ribs is provided on the outer circumferential surface of the blind cover, and a corresponding circle of positioning concave ribs is provided on the inner wall of the pump body for cooperative connection. The bottle cap and the blind cover are connected as one.

[0011] Furthermore, a central inner hole coaxial with the lower liquid inlet of the piston rod and the upper liquid outlet of the head cap seat is provided in the middle part of the lower piston, the upper end of the lower piston is cylindrical, and the lower end of the piston rod is formed with a circular groove for the cylindrical structure of the upper piston to be placed in, and the lower end of the lower piston is valve-shaped and abuts against the inner wall of the third section of the pump body.

[0012] Finally, the lowermost section of the pump body is formed with a socket for inserting the upper end of the straw, and a lower valve is arranged inside the pump body and at the upper end of the socket, and the lower valve 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: a matched piston rod and a head cap seat are arranged in the pump body, a continuous pressure tube is arranged in the piston rod and the head cap seat, an upper valve for opening or closing the liquid inlet is arranged at the lower end of the continuous pressure tube, and an upper piston for opening or closing the liquid outlet is arranged at the upper end of the continuous pressure tube. When the head cap and the piston rod move downward, the lower valve is closed, the pressure in the liquid storage chamber increases, the upper valve opens, and the liquid enters the injection chamber of the continuous pressure tube. When the pressure in the injection chamber reaches a certain value, the upper piston opens and the liquid is ejected; when the piston rod moves downward to the bottom and all the liquid in the liquid storage chamber enters the injection chamber, the liquid is continuously ejected from the head cap; the injection chamber of the continuous pressure tube has a large volume and can meet the requirements of continuous injection. The utility model has a simple and reasonable structure, is easy to assemble, can meet the requirements of continuous injection, and can be applied to liquid cosmetics. 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 cross-sectional views of the embodiment of the utility model in use;

[0016] Figure 3 This is the second cross-sectional view of the embodiment of the utility model in use;

[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 Figure 1 As shown, a continuous spray nozzle includes a pump body 1, the upper end of the pump body 1 is fixed in the bottle cap 2, the lower end of the pump body 1 is connected to a straw, a piston rod 4 is arranged in the pump body 1, the upper end opening of the piston rod 4 is matched and connected with a head cap seat 5, the upper end of the head cap seat 5 is connected to the head cap 3, the lower end of the piston rod 4 is provided with a liquid inlet 41, the upper end of the head cap seat 5 is provided with a liquid outlet 51, a cavity formed by the piston rod 4 and the head cap seat 5 is provided with a continuous pressure tube 6, the upper end of the continuous pressure tube 6 is provided with an upper piston 7, the outer wall of the upper piston 7 is sealed against the inner wall of the continuous pressure tube 6, the upper end of the upper piston 7 passes through the continuous pressure tube 6 and is sealed with the liquid outlet 51, and the piston rod 4, a valve sheet cooperating with the liquid inlet 41 is provided below the continuous pressure tube 6 to form an upper valve 9, a lower piston 8 is provided at the lower end of the piston rod 4, and the lower piston 8 has a central inner hole 81 corresponding to the liquid inlet 51, the outer wall of the lower piston 8 is tightly sealed with the inner wall of the pump body 1, a liquid storage chamber A is formed between the lower end of the lower piston 8 and the inner wall of the pump body 1, and a lower valve 10 is provided, and an injection chamber B is formed in the continuous pressure tube 6 and above the upper piston 7. The piston rod 4 head cap seat is provided with a first spring 30, so that the piston rod 4 has a tendency to move upward all the time, and the lower end of the upper piston 7 is supported by a second spring 40, so that the upper piston 7 has a tendency to always close the liquid outlet 51 upward.

[0020] The specific structure is as follows: the pump body 1 is a cylindrical structure with upper and lower openings, the bottle cap 2 has an internal thread section connected to the bottle body by thread, an annular groove 21 is provided on the inner wall of the bottle cap 2 and the upper end of the internal thread section, an upper edge extending horizontally outward is provided at the upper end opening of the pump body 1, and a positioning convex edge 11 cooperating with the annular groove is formed on the outer peripheral surface of the upper edge, and the upper end of the pump body 1 is inserted into the bottle cap 2 and positioned by the cooperation of the positioning convex edge 11 and the annular groove 21. The pump body 1 of this embodiment is divided into four sections with a diameter reduced downward, wherein the lowest section is a plug-in section for inserting a straw, and the lower piston 8 is arranged at the lower end of the piston rod 4, and the outer wall of the lower piston 8 is tightly sealed with the inner wall of the third section of the pump body 1. The head cap seat 5 is a circular ring, which is divided into three sections with decreasing diameters from bottom to top. The upper section is connected to the head cap 3, and a liquid outlet 51 connected to the discharge channel of the head cap 3 is provided at the top of the upper section. The inner diameter of the middle section matches the outer diameter of the continuous pressure tube 6, and the inner diameter of the lower section matches the upper outer diameter of the piston rod 4. A circle of retaining ring 42 is convexly provided at the upper middle position of the outer circumference of the piston rod 4. The outer diameter of the retaining ring 42 is smaller than the inner diameter of the upper section of the pump body 1 and larger than the inner diameter of the second section of the pump body 1. The first spring 30 is sleeved on the outside of the piston rod 4 and supported between the lower end of the retaining ring 42 and the step surface 12 between the second section and the third section of the pump body 1. Two circles of annular convex ribs are formed on the outer circumference of the piston rod 4 and above the retaining ring 42. A lower edge 52 that cooperates with the retaining ring 42 of the piston rod 4 is provided at the lower end opening of the head cap seat 5. An annular concave rib corresponding to the annular convex rib of the piston rod 4 is formed on the inner wall of the lower section of the head cap seat 5. The head cap seat 5 is sleeved on the piston rod 4 and is connected to the piston rod 4 by the cooperation of the annular concave rib and the annular convex rib.

[0021] A reduced diameter step 43 is provided at the lower inner part of the piston rod 4, which abuts against the lower end of the continuous pressure tube 6. The lower end of the continuous pressure tube 6 is arranged on the reduced diameter step 43. The upper end of the continuous pressure tube 6 is inserted into the middle section of the head cap seat 5 and abuts against the top surface of the middle section, and a convex column 71 is formed at the upper end of the upper piston 7. A center hole 61 is provided in the middle of the upper end surface of the continuous pressure tube 6 for the convex column 71 of the upper piston 7 to extend out. The upper piston 7 is arranged in the continuous pressure tube 6, and the convex column 71 of the upper piston 7 passes through the center hole 61 of the continuous pressure tube 6 and is inserted into the liquid outlet hole 51 of the head cap seat 5.

[0022] A blind cover 20 is provided on the inner wall of the upper end of the pump body 1. The blind cover 20 is a circular ring structure. The outer diameter of the blind cover 20 is consistent with the inner diameter of the upper end of the pump body 1. A circle of positioning convex ribs 201 is provided on the outer circumferential surface of the blind cover 20, and a corresponding circle of positioning concave ribs is provided on the inner wall of the pump body 1. The blind cover 20 is arranged on the inner wall of the pump body 1, and the flip cover is connected to the blind cover 20 as a whole. The setting of the blind cover 20 plays a limiting role and also increases the structural stability of the pump body 1.

[0023] A central inner hole 81 is provided in the middle of the lower piston 8, which is coaxial with the lower liquid inlet 41 of the piston rod 4 and the upper liquid outlet 51 of the head cap seat 5. The upper end of the lower piston 8 is cylindrical, and the lower end of the piston rod 4 is formed with a circular groove 44 for the cylindrical structure of the upper piston 8 to be placed. The lower end of the lower piston 8 is valve-shaped and abuts against the inner wall of the third section of the pump body 1.

[0024] The lowermost section of the pump body 1 is formed with a socket for inserting the upper end of the straw, and a valve 10 is provided inside the pump body 1 and at the upper end of the socket. The valve 10 cooperates with the inner wall of the pump body 1 to form a one-way valve. The valve 10 is connected to the valve seat 101 as a whole by an elastic strip and jumps up and down due to pressure changes, becoming a lower valve. The structural principles of the upper valve 9 and the lower valve 10 are the same and will not be described in detail.

[0025] When in use, press the head cap 3 downward to move the piston rod 4 downward, drive the piston 8 downward, open the upper valve 9, and close the lower valve 10. The volume of the liquid storage chamber A becomes smaller, the air pressure increases, and the liquid in the liquid storage chamber A enters the injection chamber B. When the injection chamber B reaches a certain pressure, the upper piston 7 opens, and the liquid begins to spray out from the head cap 3. When the piston rod 4 moves downward to the bottom, all the liquid in the liquid storage chamber A enters the injection chamber B, and the upper valve 9 is closed. At the same time, the liquid in the injection chamber B continues to spray out from the head cap 3. When the pressure in the injection chamber B decreases to a certain value, the upper piston 7 moves upward under the action of the second spring 10 to close the liquid outlet 52; the piston rod 4 resets upward under the action of the first spring 30. At this time, the valve 10 opens instantly, the upper valve 9 closes, and the liquid enters the liquid storage chamber A from the straw.

[0026] Since the injection chamber B of the continuous pressure pipe 6 of this embodiment has a larger volume, it can meet the requirement of continuous injection for a longer time. At the same time, the upper piston 7 is completely closed, the injection stops cleanly and neatly, and at the same time it has the function of preventing dripping.

[0027] 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 continuous spray nozzle, comprising a pump body, the upper end of which is fixed in a bottle cap, and the lower end of which is connected to a straw, characterized in that: The pump body is provided with a piston rod, and the upper opening of the piston rod is matched with the head cap seat, and the upper end of the head cap seat is connected with the head cap. The lower end of the piston rod is provided with a liquid inlet, and the upper end of the head cap seat is provided with a liquid outlet. The piston rod and the head cap seat are formed in the cavity formed by the combination of the piston rod and the head cap seat. A continuous pressure tube is provided in the upper end of the continuous pressure tube, and the outer wall of the upper piston is sealed against the inner wall of the continuous pressure tube. The upper end of the upper piston passes through the continuous pressure tube and is sealed with the liquid outlet. An upper valve matching the liquid inlet is provided in the piston rod and below the continuous pressure tube. A lower piston is provided at the lower end of the piston rod. The lower piston has a central inner hole corresponding to the liquid inlet, and the outer wall of the lower piston is tightly sealed with the inner wall of the pump body. A liquid storage cavity is formed between the lower end of the lower piston and the inner wall of the pump body, and a lower valve is provided. An injection cavity is formed in the continuous pressure tube and above the upper piston. The piston rod head cap seat is provided with a first spring, so that the piston rod has a tendency to move upward all the time, and the lower end of the upper piston is supported by a second spring, so that the upper piston has a tendency to always close the liquid outlet upward.

2. The continuous spray nozzle according to claim 1, characterized in that: The pump body is a cylindrical structure with upper and lower openings. The bottle cap has an internal thread section that is threadedly connected to the bottle body. An annular groove is provided on the inner wall of the bottle cap and the upper end of the internal thread section. An upper edge extending horizontally outward is provided at the upper end opening of the pump body. A positioning convex edge that cooperates with the annular groove is formed on the outer peripheral surface of the upper edge. The upper end of the pump body is inserted into the bottle cap and positioned by the cooperation of the positioning convex edge and the annular groove.

3. The continuous spray nozzle according to claim 2, characterized in that: The pump body is divided into four sections with decreasing diameters downwards, wherein the lowest section is a plug-in section for plugging in a straw, a lower piston is arranged at the lower end of a piston rod, and an outer wall of the lower piston is tightly sealed against an inner wall of the third section of the pump body.

4. The continuous spray nozzle according to claim 3, characterized in that: The head cap seat is a circular ring, which is divided into three sections with decreasing diameters from bottom to top, wherein the upper section is connected to the head cap, and a liquid outlet connected to the head cap discharge channel is opened at the top of the upper section, the inner diameter of the middle section matches the outer diameter of the continuous pressure tube, and the inner diameter of the lower section matches the upper outer diameter of the piston rod; a circle of retaining ring is convexly provided at the upper and middle position of the outer circumference of the piston rod, and the outer diameter of the retaining ring is smaller than the inner diameter of the upper section of the pump body and larger than the inner diameter of the second section of the pump body. The first spring is sleeved outside the piston rod and supported between the lower end of the retaining ring and the step surface between the second and third sections of the pump body. Annular convex ribs are formed on the outer circumference of the piston rod and above the retaining ring. A lower edge that cooperates with the retaining ring of the piston rod is provided at the lower end opening of the head cap seat, and an annular concave rib corresponding to the annular convex rib of the piston rod is formed on the inner wall of the lower section of the head cap seat. The head cap seat is sleeved on the piston rod and connected to the piston rod through the cooperation of the annular concave rib and the annular convex rib.

5. The continuous spray nozzle according to claim 4, characterized in that: The lower inner part of the piston rod is provided with a reduced diameter step which abuts against the lower end of the continuous pressure tube, the lower end of the continuous pressure tube is arranged on the reduced diameter step, the upper end of the continuous pressure tube is inserted into the middle section of the head cap seat and abuts against the top surface of the middle section and is fixed, the upper end of the upper piston is formed with a convex column, and the middle part of the upper end surface of the continuous pressure tube is provided with a center hole for the convex column of the upper piston to extend out, the upper piston is arranged in the continuous pressure tube, and the convex column of the upper piston passes through the center hole of the continuous pressure tube and is inserted into the liquid outlet opening of the head cap seat.

6. The continuous spray nozzle according to claim 5, characterized in that: A blind cover is arranged on the inner wall of the upper end of the pump body. The blind cover is a circular ring structure. The outer diameter of the blind cover is consistent with the inner diameter of the upper end of the pump body. A circle of positioning convex ribs is arranged on the outer circumference of the blind cover, and a corresponding circle of positioning concave ribs is arranged on the inner wall of the pump body for cooperative connection. The bottle cap and the blind cover are connected as a whole.

7. The continuous spray nozzle according to claim 6, characterized in that: A central inner hole coaxial with the lower liquid inlet of the pump body and the upper liquid outlet of the head cap seat is provided in the middle of the lower piston. The upper end of the lower piston is cylindrical, and the lower end of the piston rod is formed with a circular groove for the cylindrical structure of the upper piston to be placed. The lower end of the lower piston is valve-shaped and abuts against the inner wall of the third section of the pump body.

8. The continuous spray nozzle according to any one of claims 1 to 7, characterized in that: The lowermost section of the pump body is formed with a socket for inserting the upper end of the suction pipe, and a lower valve is arranged in the pump body and at the upper end of the socket, and the lower valve cooperates with the inner wall of the pump body to form a one-way valve.

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