All-plastic bacteria-blocking type pump head

Abstract

The utility model relates to the technical field of nasal spray bottles, and provides an all-plastic bacterium-blocking type pump head which comprises a pump head base. The piston assembly comprises an auxiliary piston and a main piston; the spray head can extend into the nasal cavity of a user; the liquid spraying triggering assembly comprises a pressing cover for being pressed by people, and the pressing cover is fixedly arranged on the spraying head so that the spraying head can synchronously move up and down along with the pressing cover; the liquid outlet valve assembly only allows liquid to be discharged and comprises a main column, an auxiliary column and a plastic elastic piece; the integrated plastic spring is suitable for the pressing type pump head, the integrated plastic spring is located in a containing space jointly limited by the spray head and the pump head base, and the liquid outlet pipe part and the main piston are sleeved with the integrated plastic spring. According to the utility model, the air compensated into the liquid storage bottle is sterile gas; meanwhile, the all-plastic nasal spray bottle only needs to be made of plastic and is not affected by liquid, corrosion and other environmental factors, and overall recovery of the all-plastic nasal spray bottle is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of nasal spray bottles, in particular to a full-plastic bacteria-resistant pump head. Background Art

[0002] The nasal spray bottle spray uses pressure drive and atomization principles to spray the drug into the nasal cavity in the form of atomization, thereby achieving the effect of treating diseases or relieving symptoms. In medicine, nasal spray bottle sprays are widely used in the treatment of nasal diseases, allergic rhinitis, and postoperative care of nasal surgery. In daily life, nasal spray bottle sprays also have many application scenarios such as cleaning the nasal cavity, moisturizing, and improving sleep quality. We can choose the appropriate nasal spray bottle spray product according to actual needs and use it correctly to achieve the desired effect.

[0003] The working process of the existing nasal spray bottle is: S1, press the pressing cover; S2, the air in the chamber is discharged; S3, release the pressing force spring to rebound to form a vacuum negative pressure in the chamber, and the liquid in the bottle is sucked into the chamber; S4, after the chamber is full of liquid, press the liquid to pass through the channel to the head of the spray head; S5, the liquid is quickly sprayed out to form atomization.

[0004] However, the pump head of the existing nasal spray bottle often needs to be reset by a metal compression spring, which has the following disadvantages: first, the pump head of the nasal spray bottle needs to be made of plastic and metal, and the price of metal is more expensive than plastic; second, the compression spring of metal is easily affected by liquids (such as medicines), corrosion and other environmental factors; third, the plastic parts of the pump head of the existing nasal spray bottle need to be removed before the metal spring can be recycled, which is not conducive to the overall recycling of the pump head of the existing nasal spray bottle. Utility Model Content

[0005] In view of the shortcomings of the prior art mentioned above, the technical problem to be solved by the utility model is to provide an all-plastic antibacterial pump head, which can compensate the air in the liquid storage bottle as sterile gas; at the same time, the all-plastic nasal spray bottle only needs plastic to be manufactured, will not be affected by liquid, corrosion and other environmental factors, and is conducive to the overall recycling of the all-plastic nasal spray bottle.

[0006] In order to solve the above technical problems, the utility model provides a fully plastic antibacterial pump head, comprising:

[0007] The pump head base includes a base body and a packaging cover. The packaging cover is disposed on the base body and is used to detachably connect a liquid storage bottle. The base body includes a sealing plate portion and a liquid outlet pipe portion formed on the sealing plate portion. The sealing plate portion is provided with an air inlet channel that allows gas to be sucked from the external environment into the liquid storage bottle. The air inlet channel is blocked with an air replenishment and bacteria-blocking component.

[0008] The piston assembly includes a secondary piston and a main piston. The secondary piston is tubular. The secondary piston is provided with a sleeve on the liquid outlet pipe so that the lumen of the secondary piston is connected to the lumen of the liquid outlet pipe. The main piston is slidably provided on the secondary piston to form a liquid storage chamber with a variable volume. The main piston has a liquid outlet opening connected to the liquid storage chamber.

[0009] A spray head that can be inserted into the user's nasal cavity, the spray head has a spray head cavity with an opening facing downward, the spray head is fixedly sleeved on the main piston, and the top of the spray head has a spray hole connected to the spray head cavity;

[0010] The liquid spray trigger assembly includes a pressing cover for a person to press, and the pressing cover is fixedly arranged on the spray head so that the spray head moves up and down synchronously with the pressing cover;

[0011] A liquid outlet valve assembly that only allows liquid to be discharged, the liquid outlet valve assembly comprising a main column, a secondary column and a plastic elastic member, the main column is fixedly arranged in the nozzle cavity and is located near the injection hole, the secondary column comprises a sliding sleeve portion and a hole-blocking column portion arranged on the sliding sleeve portion, the sliding sleeve portion is slidably sleeved on the top of the main piston up and down, the hole-blocking column portion is slidably inserted in the main column to form a liquid outlet flow channel that can be switched on and off, the liquid outlet flow channel is respectively connected to the injection hole and the liquid outlet opening, and the plastic elastic member is respectively in contact with the top of the main piston and the sliding sleeve portion, so that the hole-blocking column portion has a closing pre-tightening force to block the injection hole;

[0012] An integrated plastic spring suitable for a push-type pump head is located in a accommodating space defined by a nozzle and a pump head base. The integrated plastic spring is respectively sleeved on a liquid outlet pipe and a main piston. One end of the integrated plastic spring abuts against the base body, and the other end of the integrated plastic spring abuts against the main piston or the nozzle.

[0013] Furthermore, the plastic elastic member comprises a thick-walled tube portion and a thin-walled tube portion which are connected to each other, the thick-walled tube portion abuts against the top of the main piston, and the thin-walled tube portion abuts against the sliding sleeve portion.

[0014] Furthermore, the plastic elastic member comprises a top ring, a bottom ring coaxially arranged with the top ring, and a plurality of elastic spiral wires arranged between the top ring and the bottom ring, and the spiral directions of all the elastic spiral wires are the same.

[0015] Furthermore, the air replenishing and bacteria-blocking component includes a filter membrane sleeve arranged in the air inlet channel, a bacteria-blocking filter membrane arranged in the filter membrane sleeve, and a filter membrane plug that abuts and clamps the bacteria-blocking filter membrane.

[0016] Furthermore, the top port of the packaging cover has a first hook, and the bottom port of the nozzle has a second hook, and the second hook and the first hook stop and limit each other along the axial direction of the nozzle.

[0017] Furthermore, the main column includes an outer tube portion and an inner tube portion that are coaxially connected, and the outer tube portion is connected to the nozzle by clamping; the liquid outlet flow channel includes a guide groove opened on the outer peripheral wall of the inner tube portion and a spray forming groove opened on the top of the inner tube portion, and the guide groove is respectively connected to the spray forming groove and the liquid outlet opening, and the spray forming groove is connected to the injection hole when the hole-blocking column portion retreats downward.

[0018] Furthermore, the one-piece plastic spring comprises a highly elastic mesh tube that can be stretched and retracted along the axis direction of the tube itself, the two ends of the highly elastic mesh tube are respectively a first end and a second end, the highly elastic mesh tube comprises a first spiral wire and a second spiral wire, the number of the first spiral wire is at least two, the number of the second spiral wire is at least two, the spiral direction of the first spiral wire and the spiral direction of the second spiral wire are opposite to each other, and the first spiral wire and the second spiral wire are interwoven into an integrated structure at a non-right angle;

[0019] A top abutting ring is integrally formed at the first end of the high elastic mesh tube, and the center line of the top abutting ring and the tube axis of the high elastic mesh tube coincide with each other; the top abutting ring abuts against a convex structure on the outer peripheral wall of the main piston;

[0020] The bottom abutting ring is integrally formed at the second end of the high elastic mesh tube, the center line of the bottom abutting ring and the tube axis of the high elastic mesh tube coincide with each other; the bottom abutting ring abuts against the sealing plate portion.

[0021] As described above, the all-plastic antibacterial pump head of the utility model has the following beneficial effects: the main innovation of the all-plastic antibacterial pump head of the utility model is that all parts of the all-plastic nasal spray bottle of the utility model are made of plastic, including an integrated plastic spring and a plastic elastic part suitable for a push-type pump head. The size specification of the integrated plastic spring is larger than the size specification of the plastic elastic part. With such a configuration, the all-plastic nasal spray bottle only needs plastic to be manufactured and will not be affected by liquid, corrosion and other environmental factors, which is conducive to the overall recovery of the all-plastic nasal spray bottle. In addition, the integrated plastic spring is located in the accommodating space defined by the nozzle and the pump head base, and the integrated plastic spring is respectively sleeved on the liquid outlet pipe and the main piston, one end of the integrated plastic spring abuts against the base body, and the other end of the integrated plastic spring abuts against the main piston or the nozzle. With such a configuration, the overall structure of the all-plastic antibacterial pump head can be made more compact. Therefore, the all-plastic nasal spray bottle can make the liquid outlet path and the air inhalation path independent of each other, so as to compensate the air in the liquid storage bottle as sterile gas; at the same time, the all-plastic nasal spray bottle only needs plastic to be manufactured, will not be affected by liquid, corrosion and other environmental factors, and is conducive to the overall recycling of the all-plastic nasal spray bottle. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram showing a first embodiment of an integrated plastic spring suitable for a push-type pump head of the utility model;

[0023] Figure 2 Shown is a side view of a first embodiment of an integrated plastic spring suitable for a push-type pump head of the utility model;

[0024] Figure 3 Shown is a three-dimensional view of the all-plastic nasal spray bottle of the utility model;

[0025] Figure 4 The picture shows the state of use of the all-plastic nasal spray bottle with the dust cap removed;

[0026] Figure 5 Shown is a cross-sectional view of the all-plastic nasal spray bottle after the dust cap has been removed;

[0027] Figure 6 Display as Figure 5 A magnified view of part A;

[0028] Figure 7 Shown is a cross-sectional view of the pump head base and piston assembly of the fully plastic bacteria-resistant pump head of the utility model;

[0029] Figure 8 A cross-sectional view of a first embodiment of a plastic resilient member is shown;

[0030] Fig. 9 A stereogram of a sprinkler head is shown;

[0031] Fig.10 A stereogram showing the main column;

[0032] Fig.11 Shown is a cross-sectional view of the air supply and bacteria barrier component;

[0033] Fig.12 A perspective view showing a second embodiment of an integrated plastic spring suitable for a push-type pump head of the utility model;

[0034] Fig.13 A perspective view of a second embodiment of a plastic elastic member is shown.

[0035] Component number description

[0036] 1 Pump head base

[0037] 11 Base body

[0038] 111 Sealing plate

[0039] 112 Discharge pipe part

[0040] 113 Intake channel

[0041] 114 Air supply and bacteria blocking components

[0042] 114a Filter membrane set

[0043] 114b Bacteria-blocking filter membrane

[0044] 114c Filter membrane plug

[0045] 12 Package cover

[0046] 13 Sealing ring

[0047] 2 Spray trigger assembly

[0048] 21 Press cover

[0049] 22 Anti-slip pattern

[0050] 3 Piston assembly

[0051] 31 Auxiliary piston

[0052] 311 Liquid Lip

[0053] 32 Main piston

[0054] 321 Liquid outlet

[0055] 322 Pipe body part

[0056] 323 Piston head

[0057] 324 Inserting the column

[0058] 33 Liquid storage chamber

[0059] 4 Liquid outlet valve assembly

[0060] 41 Main Column

[0061] 411 External Management Department

[0062] 412 Inner tube

[0063] 42 secondary pillars

[0064] 421 Sliding Bushing

[0065] 422 plugging column

[0066] 43 Liquid outlet channel

[0067] 431 Diversion channel

[0068] 432 Spray forming tank

[0069] 44 Plastic elastic parts

[0070] 441 Thick wall pipe

[0071] 442 Thin-walled tube

[0072] 443 Top Ring

[0073] 444 elastic spiral wire

[0074] 445 Bottom ring

[0075] 5. Straw

[0076] 6 liquid storage bottles

[0077] 61 Bottle mouth

[0078] 7 Nozzles

[0079] 71 Nozzle Chamber

[0080] 72 jet hole

[0081] 8 Dust cap

[0082] 9 Integrated plastic spring

[0083] 91 Highly Flexible Network Management

[0084] 911 First Spiral Wire

[0085] 912 Second spiral

[0086] 92 Top abutment ring

[0087] 93 Bottom abutment ring

[0088] 94 Middle shaping ring DETAILED DESCRIPTION

[0089] The following is a description of the implementation of the present invention by means of specific embodiments. People familiar with the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0090] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportion relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0091] like Figure 1 and Figure 2As shown, in order to prevent the existing nozzle reset part of the push-type pump head from being affected by liquid (such as medicine), corrosion and other environmental factors, the utility model provides an integrated plastic spring suitable for the push-type pump head, which includes:

[0092] A highly elastic mesh tube 91 that can be stretched and retracted along the axis of the tube itself, the two ends of the highly elastic mesh tube 91 being respectively a first end and a second end, the highly elastic mesh tube 91 comprising a first spiral wire 911 and a second spiral wire 912, the number of the first spiral wire 911 being at least two, the number of the second spiral wire 912 being at least two, the spiral direction of the first spiral wire 911 and the spiral direction of the second spiral wire 912 being opposite to each other, and the first spiral wire 911 and the second spiral wire 912 being interwoven into an integral structure at a non-right angle;

[0093] A top abutting ring 92, which is integrally formed at the first end of the high elastic mesh tube 91, and a center line of the top abutting ring 92 and an axis line of the high elastic mesh tube 91 coincide with each other;

[0094] The bottom abutting ring 93 is integrally formed at the second end of the high elastic mesh tube 91 , and the center line of the bottom abutting ring 93 and the tube axis of the high elastic mesh tube 91 coincide with each other.

[0095] In the integrated plastic spring of the utility model, the highly elastic mesh tube 91 includes a first spiral wire 911 and a second spiral wire 912, the number of the first spiral wire 911 is at least two, the number of the second spiral wire 912 is at least two, the spiral direction of the first spiral wire 911 and the spiral direction of the second spiral wire 912 are opposite to each other, and the first spiral wire 911 and the second spiral wire 912 are interwoven into an integrated structure at a non-right angle, so that the highly elastic mesh tube 91 can achieve elastic expansion and contraction, better absorb and release its own elastic potential energy, and obtain better axial pressure bearing performance and elastic storage performance than the existing metal compression spring. The top abutment ring 92 is integrally formed at the first end of the highly elastic mesh tube 91, and the center line of the top abutment ring 92 and the tube axis of the highly elastic mesh tube 91 coincide with each other, so that the first end of the highly elastic mesh tube 91 can be firmly abutted against a component to be reset of the push-type pump head. The bottom abutment ring 93 is integrally formed at the second end of the high elastic mesh tube 91, and the center line of the bottom abutment ring 93 coincides with the axis line of the high elastic mesh tube 91, so that the second end of the high elastic mesh tube 91 can be stably abutted against another component of the push-type pump head.

[0096] Therefore, the integrated plastic spring suitable for the push-type pump head of the utility model can make the nozzle resetting function of the push-type pump head unaffected by environmental factors such as liquid, moisture, corrosion, etc., and obtain axial pressure bearing performance and elastic storage performance equivalent to or even better than the existing metal compression spring.

[0097] Furthermore, in order to avoid radial deformation in the middle of the high-elastic mesh tube 91 and to improve the elastic storage performance of the high-elastic mesh tube 91, the one-piece plastic spring suitable for the push-type pump head also includes a middle shaping ring 94, and the middle shaping ring 94 and the middle of the high-elastic mesh tube 91 are connected to form an integrated structure.

[0098] Furthermore, in order to further improve the elastic storage performance of the high-elasticity mesh tube 91, the radius of the top abutting ring 92, the radius of the bottom abutting ring 93 and the radius of the middle shaping ring 94 are equal to each other.

[0099] Furthermore, in order to make the radial specifications of the high-elasticity mesh tube 91 consistent everywhere, the spiral radius of the first spiral wire 911 and the spiral radius of the second spiral wire 912 remain unchanged.

[0100] Furthermore, if Figure 2 As shown, in order to improve the elastic expansion and contraction stability of the high elastic network tube 91, the helical lead angle of the first helical wire 911 and the helical lead angle of the second helical wire 912 are both 20 to 30 degrees, for example, 23 degrees, 24 degrees and 25 degrees.

[0101] Furthermore, if Figure 1 As shown, as the first embodiment of the integrated plastic spring: the two ends of the first spiral wire 911 along its own extension direction are respectively integrally formed on the top abutment ring 92 and the bottom abutment ring 93; the two ends of the second spiral wire 912 along its own extension direction are also respectively integrally formed on the top abutment ring 92 and the bottom abutment ring 93.

[0102] Furthermore, if Fig.12 As shown, as a second embodiment of the one-piece plastic spring: in order to reduce the connection points between the high-elasticity mesh tube 91 and the top abutment ring 92 and the bottom abutment ring 93, one end of the first spiral wire 911 along its own extension direction is integrally formed with the top abutment ring 92 and the other end is integrally formed with the bottom abutment ring 93; one end of the second spiral wire 912 along its own extension direction is not connected to the top abutment ring 92 and the other end is not connected to the bottom abutment ring 93.

[0103] Under the condition of a certain amount of plastic, in order to further improve the maximum elastic potential energy of the integrated plastic spring, the cross-section of the first spiral wire 911 is larger than the cross-section of the second spiral wire 912, that is, the first spiral wire 911 is relatively thick and serves as the main telescopic structure, and the second spiral wire 912 is relatively thin and serves as an auxiliary telescopic structure.

[0104] like Figure 3 , Figure 4As shown, the utility model also provides a full plastic nasal spray bottle, which includes a liquid storage bottle 6 and a full plastic antibacterial pump head installed on the liquid storage bottle 6. The liquid storage bottle 6 has a bottle mouth 61. The full plastic antibacterial pump head is detachably and sealedly installed on the bottle mouth 61. All parts of the full plastic nasal spray bottle of the utility model are made of plastic.

[0105] Among them, Figure 5 , Figure 6 as well as Figure 7 As shown in the figure (in the figure, the solid black curved arrow indicates the flow direction of the liquid, and the dotted line indicates the flow direction of the gas), the all-plastic antibacterial pump head includes:

[0106] The pump head base 1 comprises a base body 11 and a packaging cover 12. The packaging cover 12 is disposed on the base body 11 and is used to be detachably connected to a liquid storage bottle 6. The base body 11 comprises a sealing plate portion 111 and a liquid outlet pipe portion 112 formed on the sealing plate portion 111. The sealing plate portion 111 is provided with an air inlet channel 113 for allowing gas to be sucked from the external environment into the liquid storage bottle 6. The air inlet channel 113 is blocked with an air replenishment and bacteria-blocking component 114.

[0107] The piston assembly 3 includes a secondary piston 31 and a primary piston 32. The secondary piston 31 is tubular. The secondary piston 31 is disposed on the liquid outlet pipe portion 112 so that the lumen of the secondary piston 31 is connected to the lumen of the liquid outlet pipe portion 112. The primary piston 32 is disposed on the secondary piston 31 in a sliding manner to form a liquid storage chamber 33 with a variable volume. The primary piston 32 has a liquid outlet opening 321 connected to the liquid storage chamber 33.

[0108] The nozzle 7 can be inserted into the user's nasal cavity (see Fig. 9 ), the nozzle 7 has a nozzle cavity 71 with an opening facing downward, the nozzle 7 is fixedly sleeved on the main piston 32, and the top of the nozzle 7 has a spray hole 72 connected to the nozzle cavity 71;

[0109] The liquid spray trigger assembly 2 includes a pressing cover 21 for a person to press, and the pressing cover 21 is fixedly arranged on the spray head 7 so that the spray head 7 moves up and down synchronously with the pressing cover 21;

[0110] A liquid outlet valve assembly 4 that only allows liquid to be discharged, the liquid outlet valve assembly 4 includes a main column 41, a secondary column 42 and a plastic elastic member 44, the main column 41 is fixedly arranged in the nozzle cavity 71 and is located near the injection hole 72, the secondary column 42 includes a sliding sleeve portion 421 and a hole blocking column portion 422 arranged on the sliding sleeve portion 421, the sliding sleeve portion 421 is slidably sleeved on the top of the main piston 32 up and down, the hole blocking column portion 422 is slidably inserted in the main column 41 to form a liquid outlet channel 43 that can be switched on and off, the liquid outlet channel 43 is respectively connected to the injection hole 72 and the liquid outlet opening 321, and the plastic elastic member 44 is respectively in contact with the top of the main piston 32 and the sliding sleeve portion 421, so that the hole blocking column portion 422 has a closing preload force to block the injection hole 72;

[0111] An integrated plastic spring suitable for a push-type pump head is located in a accommodating space defined by the nozzle 7 and the pump head base 1. The integrated plastic spring is respectively sleeved on the liquid outlet pipe portion 112 and the main piston 32. One end of the integrated plastic spring abuts against the base body 11, and the other end of the integrated plastic spring abuts against the main piston 32 or the nozzle 7.

[0112] In the present utility model, the pump head base 1 includes a base body 11 and a packaging cover 12. The base body 11 is a functional part of the base of the all-plastic antibacterial pump head, which is mainly used to limit and install the above-mentioned air replenishment and antibacterial assembly 114, the nozzle 7 and the auxiliary piston 31. Specifically, the base body 11 can be sealed and installed on the above-mentioned bottle mouth 61 through a sealing ring (such as a silicone gasket) to prevent liquid from leaking from the contact position between the liquid storage bottle 6 and the base body 11. The packaging cover 12 is detachably connected to the liquid storage bottle 6. For example, the pump head base 1 can be pressed onto the liquid storage bottle 6 by a snap connection.

[0113] The outer surface of the nozzle 7 contacts the user, and the nozzle cavity 71 of the nozzle 7 is used to fix the main piston 32 and the main column 41, so that the main piston 32 and the main column 41 can move up and down synchronously with the nozzle 7; a liquid outlet gap is formed between the nozzle 7 and the sliding sleeve portion 421, the lower part of the liquid outlet gap is connected to the liquid outlet opening 321, and the upper part of the liquid outlet gap is connected to the liquid outlet channel 43.

[0114] The liquid spray trigger assembly 2 includes a pressing cover 21, which moves downward under the pressing action of the user's finger. Since the pressing cover 21 is fixedly connected to the spray head 7, the spray head 7 moves up and down synchronously with the pressing cover 21. Preferably, the pressing cover 21 is provided with anti-slip grooves 22 to prevent the user's finger from sliding on the pressing cover 21.

[0115] The liquid outlet valve assembly 4 has the function of only allowing liquid to be discharged. The secondary column 42 includes a sliding sleeve portion 421, on which a hole blocking column portion 422 is provided, and the sliding sleeve portion 421 is slidably sleeved on the top of the main piston 32. When the user's finger does not apply force to the pressing cover 21, the hole blocking column portion 422 is inserted upward to the deepest part of the main column 41 under the elastic force of the plastic elastic member 44. At this time, the hole blocking column portion 422 blocks the liquid outlet flow channel 43. At the same time, the end face of the hole blocking column portion 422 blocks the injection hole 72 to prevent bacteria in the air from contaminating the liquid in the nozzle 7. There is another design point that needs to be noted: there is a hydraulic gap between the sliding sleeve portion 421 and the main column 41, which creates conditions for the liquid outlet valve assembly 4 to switch from a closed state to an open state. When the user's finger applies force downward to the pressing cover 21, the liquid in the liquid storage chamber 33 flows through the above-mentioned liquid outlet opening 321 and the liquid outlet gap in sequence and then squeezes into the hydraulic gap. At this time, the downward force of the liquid on the sleeve 421 is greater than the upward force of the plastic elastic member 44 on the sleeve 421, and the sleeve 421 moves downward relative to the top of the main piston 32 until the hole blocking column 422 no longer blocks the liquid outlet channel 43, so that the liquid outlet channel 43 is ejected from the injection hole 72. Once the downward force of the liquid on the sleeve 421 is less than the upward force of the plastic elastic member 44 on the sleeve 421, that is, after the liquid injection and pressure relief are completed, the hole blocking column 422 is immediately reset, even if the liquid outlet channel 43 is switched to the blocking state again, and at the same time, the end surface of the hole blocking column 422 blocks the injection hole 72 to prevent bacteria in the air from contaminating the liquid in the nozzle 7.

[0116] The main piston 32 is fixedly arranged in the nozzle cavity 71. The main piston 32 is slidably arranged on the auxiliary piston 31 up and down to form a liquid storage chamber 33 with a variable volume. The main piston 32 has a liquid outlet opening 321 connected to the liquid storage chamber 33. When the main piston 32 or the nozzle 7 moves upward under the elastic force of the integrated plastic spring 9, the volume of the liquid storage chamber 33 increases to form a negative pressure, and the liquid in the liquid storage bottle 6 is sucked into the liquid storage chamber 33. At the same time, the air (i.e., the curved dotted arrow) is sucked into the liquid storage bottle 6 after being filtered by the air replenishment and bacteria-blocking component 114, realizing the aseptic air replenishment process, and the liquid cannot pass through the air replenishment and bacteria-blocking component 114 in the reverse direction. When the pressing cover 21 moves downward under the pressure of the user's finger, the main piston 32 moves downward relative to the base body 11, and the volume of the liquid storage chamber 33 decreases to form a positive pressure. The liquid in the liquid storage chamber 33 is squeezed out to the above-mentioned hydraulic gap through the liquid outlet opening 321.

[0117] The liquid outlet path of the above-mentioned all-plastic nasal spray bottle is specifically: flowing through the bottle cavity of the liquid storage bottle 6, the tube cavity of the liquid outlet tube part 112, the tube cavity of the auxiliary piston 31, the liquid storage chamber 33, the liquid outlet opening 321, the liquid outlet gap, the hydraulic gap, the liquid outlet channel 43 and the injection hole 72 in sequence.

[0118] The main innovation of the all-plastic antibacterial pump head of the utility model is that all parts of the all-plastic nasal spray bottle of the utility model are made of plastic, including an integrated plastic spring suitable for a push-type pump head and a plastic elastic part 44. The size of the integrated plastic spring is larger than the size of the plastic elastic part 44. With such a configuration, the all-plastic nasal spray bottle only needs plastic to be manufactured, and will not be affected by liquids (such as medicines), corrosion and other environmental factors, which is conducive to the overall recovery of the all-plastic nasal spray bottle. In addition, the integrated plastic spring is located in the accommodating space defined by the nozzle 7 and the pump head base 1, and the integrated plastic spring is respectively sleeved on the liquid outlet pipe part 112 and the main piston 32, one end of the integrated plastic spring abuts against the base body 11, and the other end of the integrated plastic spring abuts against the main piston 32 or the nozzle 7. Such a configuration can make the overall structure of the all-plastic antibacterial pump head more compact.

[0119] Therefore, the all-plastic nasal spray bottle can make the liquid outlet path and the air inhalation path independent of each other, so as to compensate the air in the liquid storage bottle 6 as sterile gas; at the same time, the all-plastic nasal spray bottle only needs plastic to be manufactured, will not be affected by liquid, corrosion and other environmental factors, and is conducive to the overall recycling of the all-plastic nasal spray bottle.

[0120] As a method of using the above-mentioned all-plastic nasal spray bottle:

[0121] S1, unused state;

[0122] S2, pressurizing the pressing cover 21: the main piston presses downward to generate negative pressure in the liquid storage chamber 33, the liquid outlet valve assembly 4 opens, and the liquid is sprayed out;

[0123] S3, the pressing cover 21 moves to the lowest limit position: the liquid in the liquid storage chamber 33 is sprayed out, and the liquid outlet valve assembly 4 is closed under the action of its own elastic force;

[0124] S4, release the pressing cover 21: under the action of the integrated plastic spring 9, the pressing cover 21 returns to its original position, and the liquid is drawn back into the liquid storage chamber 33 under the action of the piston assembly 3.

[0125] Furthermore, if Figure 8 As shown in the figure, as a first embodiment of the plastic elastic member 44: in order to make the plastic elastic member 44 have elastic force, the plastic elastic member 44 includes a thick-walled tube portion 441 and a thin-walled tube portion 442 connected to each other, the thick-walled tube portion 441 abuts against the top of the main piston 32, and the thin-walled tube portion 442 abuts against the sliding sleeve portion 421. The thin-walled tube portion 442 will undergo elastic deformation, and the thick-walled tube portion 441 will undergo elastic deformation or will not undergo elastic deformation.

[0126] like Fig.13As shown, as a second embodiment of the plastic elastic member 44: in order to improve the elasticity of the plastic elastic member 44, the plastic elastic member 44 includes a top ring 443, a bottom ring 445 coaxially arranged with the top ring 443, and a plurality of elastic spiral wires 444 arranged between the top ring 443 and the bottom ring 445, and the spiral directions of all the elastic spiral wires 444 are the same.

[0127] Furthermore, if Fig.11 As shown, in order to simplify the structure of the above-mentioned air-infusing bacteria-blocking component 114 and facilitate assembly, the air-infusing bacteria-blocking component 114 includes a filter membrane sleeve 114a arranged in the air inlet channel 113, a bacteria-blocking filter membrane 114b arranged in the filter membrane sleeve 114a, and a filter membrane plug 114c that abuts and clamps the bacteria-blocking filter membrane 114b.

[0128] Furthermore, if Figure 5 As shown, in order to prevent the nozzle 7 from being separated from the pump head base 1, the top port of the packaging cover 12 has a first hook, and the bottom port of the nozzle 7 has a second hook, and the second hook and the first hook stop each other along the axial direction of the nozzle 7. In addition, the packaging cover 12 and the nozzle 7 are slidably matched, and the air in the external environment can flow into the air inlet channel 113 in a circuitous manner.

[0129] Furthermore, if Figure 5 and Fig.10 As shown, in order to form the liquid into a spray shape, the main column 41 includes an outer tube portion 411 and an inner tube portion 412 connected coaxially, and the outer tube portion 411 is connected to the nozzle 7 by clamping; the liquid outlet channel 43 includes a guide groove 431 opened on the outer peripheral wall of the inner tube portion 412 and a spray forming groove 432 (which can also be called a cyclone groove) opened on the top of the inner tube portion 412, and the guide groove 431 is connected to the spray forming groove 432 and the liquid outlet opening 321 respectively, and the spray forming groove 432 is connected to the injection hole 72 when the hole blocking column portion 422 retreats downward. The number of the spray forming grooves 432 is multiple, for example, two, and all the spray forming grooves 432 are in a circular array, so that the liquid is broken into a spray shape at the injection hole 72 under the action of the spray forming grooves 432.

[0130] Furthermore, if Figure 7 As shown, in order to squeeze the liquid in the above-mentioned liquid storage chamber 33 out to the liquid outlet channel 43, the above-mentioned main piston 32 includes a tube body portion 322 that moves synchronously with the nozzle 7, a piston head 323 arranged at the top of the tube body portion 322, and an inserted column portion 324 semi-suspended in the tube body portion 322, the piston head portion 323 is slidably matched with the sliding sleeve portion 421, and the inserted column portion 324 can extend into and block the tube cavity of the auxiliary piston 31; the outer peripheral wall of the above-mentioned auxiliary piston 31 has a liquid-tight lip 311, and the liquid-tight lip 311 is slidably abutted against the inner peripheral wall of the tube body portion 322.

[0131] like Figure 5 As shown, in order to absorb the liquid at the bottom of the bottle, the above-mentioned all-plastic antibacterial pump head also includes a straw 5, and the straw 5 is connected to one end of the liquid outlet pipe part 112 extending into the liquid storage bottle 6.

[0132] like Figure 3 and Figure 4 As shown, in order to protect the nozzle and prevent dust, the above-mentioned all-plastic antibacterial pump head also includes a dust cap 8, and the dust cap 8 is detachably covered on the nozzle 7.

[0133] In summary, the utility model of the all-plastic antibacterial pump head can make the liquid outlet path and the air intake path independent of each other, so as to compensate the air in the liquid storage bottle as sterile gas; at the same time, the all-plastic nasal spray bottle only needs plastic to be manufactured, which will not be affected by liquid, corrosion and other environmental factors, and is conducive to the overall recycling of the all-plastic nasal spray bottle. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has a high industrial utilization value.

[0134] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A fully plastic antibacterial pump head, characterized in that: include: A pump head base (1), the pump head base (1) comprising a base body (11) and a packaging cover (12), the packaging cover (12) being disposed on the base body (11) and being used for being detachably connected to a liquid storage bottle (6), the base body (11) comprising a sealing plate portion (111) and a liquid outlet pipe portion (112) formed on the sealing plate portion (111), the sealing plate portion (111) being provided with an air inlet channel (113) for allowing gas to be sucked from the external environment into the liquid storage bottle (6), and an air replenishment and bacteria-blocking component (114) being provided on the air inlet channel (113); A piston assembly (3), the piston assembly (3) comprising a secondary piston (31) and a main piston (32), the secondary piston (31) being tubular, the secondary piston (31) being disposed in an outer sleeve on a liquid outlet pipe portion (112) so that the lumen of the secondary piston (31) is connected to the lumen of the liquid outlet pipe portion (112), the main piston (32) being disposed in an outer sleeve on the secondary piston (31) in a manner of sliding up and down to form a liquid storage chamber (33) with a variable volume, the main piston (32) having a liquid outlet opening (321) connected to the liquid storage chamber (33); A spray head (7) that can be inserted into the user's nasal cavity, the spray head (7) having a spray head cavity (71) with an opening facing downward, the spray head (7) is fixedly sleeved on the main piston (32), and the top of the spray head (7) has a spray hole (72) that is connected to the spray head cavity (71); A liquid spray trigger assembly (2), the liquid spray trigger assembly (2) comprising a pressing cover (21) for a person to press, the pressing cover (21) being fixedly arranged on the spray head (7) so that the spray head (7) moves up and down synchronously with the pressing cover (21); A liquid outlet valve assembly (4) that only allows liquid to be discharged, the liquid outlet valve assembly (4) comprising a main column (41), a secondary column (42) and a plastic elastic member (44), the main column (41) being fixedly arranged in a nozzle cavity (71) and being located near a spray hole (72), the secondary column (42) comprising a sliding sleeve portion (421) and a hole blocking column portion (422) arranged on the sliding sleeve portion (421), the sliding sleeve portion (421) being slidably sleeved on the main column (41) up and down. The top of the piston (32), the hole blocking column (422) is slidably inserted in the main column (41) to form a liquid outlet channel (43) that can be switched on and off, the liquid outlet channel (43) is respectively connected to the injection hole (72) and the liquid outlet opening (321), and the plastic elastic member (44) is respectively in contact with the top of the main piston (32) and the sliding sleeve (421), so that the hole blocking column (422) has a closing pre-tightening force to block the injection hole (72); An integrated plastic spring suitable for a push-type pump head, the integrated plastic spring being located in a receiving space defined by a spray head (7) and a pump head base (1), the integrated plastic spring being respectively sleeved on a liquid outlet pipe portion (112) and a main piston (32), one end of the integrated plastic spring being in contact with a base body (11), and the other end of the integrated plastic spring being in contact with the main piston (32) or the spray head (7).

2. The all-plastic antibacterial pump head according to claim 1, characterized in that: The plastic elastic member (44) comprises a thick-walled tube portion (441) and a thin-walled tube portion (442) connected to each other, the thick-walled tube portion (441) abuts against the top of the main piston (32), and the thin-walled tube portion (442) abuts against the sliding sleeve portion (421).

3. The all-plastic antibacterial pump head according to claim 1, characterized in that: The plastic elastic member (44) comprises a top ring (443), a bottom ring (445) coaxially arranged with the top ring (443), and a plurality of elastic spiral wires (444) arranged between the top ring (443) and the bottom ring (445), wherein the spiral directions of all the elastic spiral wires (444) are the same.

4. The all-plastic antibacterial pump head according to claim 1, characterized in that: The air replenishing bacteria-blocking component (114) comprises a filter membrane sleeve (114a) arranged in the air inlet channel (113), a bacteria-blocking filter membrane (114b) arranged in the filter membrane sleeve (114a), and a filter membrane plug (114c) that abuts and clamps the bacteria-blocking filter membrane (114b).

5. The all-plastic antibacterial pump head according to claim 1, characterized in that: The top port of the packaging cover (12) has a first hook, and the bottom port of the nozzle (7) has a second hook. The second hook and the first hook stop and limit each other along the axial direction of the nozzle (7).

6. The all-plastic antibacterial pump head according to claim 1, characterized in that: The main column (41) comprises an outer tube portion (411) and an inner tube portion (412) which are coaxially connected, and the outer tube portion (411) is connected to the nozzle (7) by snap-fitting; the liquid outlet channel (43) comprises a guide groove (431) provided on the outer peripheral wall of the inner tube portion (412) and a spray forming groove (432) provided on the top end of the inner tube portion (412), the guide groove (431) being connected to the spray forming groove (432) and the liquid outlet opening (321) respectively, and the spray forming groove (432) being connected to the injection hole (72) when the hole blocking column portion (422) retracts downward.

7. The all-plastic antibacterial pump head according to claim 1, characterized in that: The integrated plastic spring comprises a high elastic mesh tube (91) that can be stretched and retracted along the axis direction of the high elastic mesh tube (91), the two ends of the high elastic mesh tube (91) are respectively a first end and a second end, the high elastic mesh tube (91) comprises a first spiral wire (911) and a second spiral wire (912), the number of the first spiral wire (911) is at least two, the number of the second spiral wire (912) is at least two, the spiral direction of the first spiral wire (911) and the spiral direction of the second spiral wire (912) are opposite to each other, and the first spiral wire (911) and the second spiral wire (912) are interwoven at a non-right angle to form an integrated structure; A top abutting ring (92), the top abutting ring (92) is integrally formed at the first end of the high elastic mesh tube (91), the center line of the top abutting ring (92) and the tube axis of the high elastic mesh tube (91) coincide with each other; the top abutting ring (92) abuts against a protruding structure on the outer peripheral wall of the main piston (32); The bottom abutting ring (93) is integrally formed at the second end of the high elastic mesh tube (91), and the center line of the bottom abutting ring (93) and the tube axis line of the high elastic mesh tube (91) coincide with each other; the bottom abutting ring (93) abuts against the sealing plate portion (111).

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