Liquid quantitative extrusion cap

Abstract

The present application relates to a liquid quantitative extrusion cap, which includes a cap body, one end of the cap body is a liquid inlet, the other end is a liquid outlet, an elastic valve is arranged at the liquid outlet, a floating part is slidably connected to the cap body, a contact part for blocking the liquid outlet is arranged on the side of the floating part close to the liquid outlet, a limiter for limiting the maximum range of movement of the floating part away from the liquid outlet is arranged on the cap body; a liquid outlet gap is arranged between the floating part and the inner wall of the cap body and the limiter. The present application has the effect of using the cap body to enable the bottle to quantitatively extrude liquid.

Description

Technical Field

[0001] The present application relates to the field of liquid quantitative extrusion devices, and in particular to a liquid quantitative extrusion cap. Background Art

[0002] Bottle caps are an important part of food and beverage packaging containers. Bottle caps can maintain the airtightness of the products in the container and are widely used in bottle packaging products.

[0003] At present, for plastic bottles filled with liquid, the liquid can be squeezed out by directly inverting the bottle body, or inverting the bottle body and squeezing the bottle body during use. However, there is a problem in controlling the amount of squeezed liquid. Although some bottles are provided with scale lines in the related art, it is still not easy to control the amount of liquid discharged during the process of pouring or squeezing the liquid. In addition, if a bottle body with an extrusion pump structure on the cover body is used, the cost will be high due to the complex structure itself. Therefore, a device with a simple structure and low cost for quantitatively squeezing the liquid in the bottle body is needed. Summary of the invention

[0004] In order to provide an extrusion device with a simple structure for quantitatively extruding liquid in a bottle, the present application provides a liquid quantitative extrusion cap.

[0005] The liquid quantitative extrusion cap provided in the present application adopts the following technical solution:

[0006] A liquid quantitative extrusion cover comprises a cover body, one end of the cover body is a liquid inlet, and the other end is a liquid outlet, an elastic valve is arranged at the liquid outlet, a floating part is slidably connected in the cover body, a contact part for blocking the liquid outlet is arranged on the side of the floating part close to the liquid outlet, a limiting part for limiting the maximum movable range of the floating part away from the liquid outlet is arranged on the cover body; a liquid outlet gap is arranged between the floating part and the inner wall of the cover body and the limiting part.

[0007] By adopting the above technical solution, during use, the squeezable bottle body is first turned upside down. Since an elastic valve is provided at the liquid outlet, the liquid is not easy to leak out when the bottle body is not squeezed; at the same time, the floating member floats up to the position of the limit member under the action of buoyancy, and the liquid in the bottle body fills the accommodating cavity between the floating member and the liquid outlet through the liquid outlet gap; then the bottle body is squeezed, and since the floating member is squeezed by the liquid on the side opposite to the liquid outlet, the floating member gradually approaches the liquid outlet, and in the process of approaching the liquid outlet, the elastic valve is also squeezed. When the bottle is opened, the pressure of the liquid is opened, thereby squeezing the liquid between the floating part and the liquid outlet out from the liquid outlet. When the abutting part on the floating part abuts against the liquid outlet and blocks the liquid outlet, the liquid outlet no longer discharges liquid, that is, a quantitative extrusion of the liquid is completed. The extrusion amount is the amount of liquid between the floating part and the liquid outlet when the floating part floats to the position of the limit part. When the bottle body is released, if the bottle body can rebound, the elastic valve is opened under the action of gas pressure, allowing air to enter the bottle body. At the same time, the floating part is easily separated from the inner wall of the cover at the liquid outlet, which is convenient for the next use.

[0008] Preferably, the limiting member is configured as a limiting protrusion fixedly connected to the inner wall of the cover body.

[0009] By adopting the above technical solution, the limiting protrusion is fixed on the inner wall of the cover body, so that the amount of liquid squeezed out of the bottle body each time is fixed and the dosage cannot be adjusted.

[0010] Preferably, a floating groove is provided on the side wall of the cover body along the floating direction of the floating member, a floating protrusion slidably connected to the floating groove is provided on the floating member at a position corresponding to the floating groove, and the end of the floating groove forms the limiting member.

[0011] By adopting the above technical solution, the floating protrusion on the floating member slides along the floating groove on the inner wall of the cover body, so that the floating limit position of the floating member is limited by the length of the floating groove, thereby achieving quantitative extrusion of the liquid.

[0012] Preferably, the elastic valve protrudes toward one side of the connecting portion.

[0013] By adopting the above technical solution, when the bottle body is squeezed, the elastic valve needs to be subjected to a certain pressure before it can bulge toward the side away from the connecting part, thereby opening the elastic valve and realizing the extrusion of liquid; when the bottle body is not squeezed, the elastic valve, under the action of its own elastic deformation, restores the bulge toward the side of the connecting part, thereby realizing the closing of the elastic valve, making it difficult for liquid to flow out, and having a better sealing effect.

[0014] Preferably, the floating member comprises a floating plate slidably connected in the cover body, the abutment portion is fixedly connected to a position of the floating plate corresponding to the liquid outlet, and the liquid outlet gap is located between the floating plate and an inner side wall of the cover body.

[0015] By adopting the above technical solution, a floating plate structure is adopted, which is simple and easy to implement and has a good floating effect. The liquid outlet gap is located at the edge where the floating plate contacts the inner wall of the cover body, so that in the process of squeezing the liquid, the floating plate is gradually approached to the liquid outlet under the pressure of the liquid, so that the liquid is not easy to further enter the cavity between the floating plate and the liquid outlet from the liquid outlet gap, which is conducive to ensuring the quantification of the liquid.

[0016] Preferably, a support member is provided on one side of the floating member close to the liquid outlet, the support member is used to abut against a side wall of the cover body close to the liquid outlet, and a height of the support member is lower than a height of the abutting portion.

[0017] By adopting the above technical scheme, the support member plays a role of supporting the floating member, so that the abutting portion is not easy to excessively abut and squeeze the liquid outlet, which is beneficial to protecting the structure at the liquid outlet and the structure of the abutting portion; at the same time, a cavity is formed between the floating member and the side wall of the cover body, so that atmospheric pressure exists between the two, so that the floating plate is not easy to fit to the side wall of the cover body close to the liquid outlet, and is easily separated from the side wall of the cover body; the support member also increases the structural strength of the floating member, so that the floating member is not easy to deform.

[0018] Preferably, the outer wall of the abutment portion is in a closed shape and is used for interference abutment against the inner wall of the liquid outlet.

[0019] By adopting the above technical solution, due to the existence of the liquid outlet gap, the floating part does not float completely in contact with the inner wall of the cover body, so the position of the abutment part will also be slightly offset, which is beneficial for the outer wall of the abutment part with a closed shape to abut and gradually align with the liquid outlet along the edge of the liquid outlet, thereby facilitating the sealing effect.

[0020] Preferably, the abutment portion is configured as an elastic abutment portion.

[0021] By adopting the above technical solution, the elastic abutting portion can seal the liquid outlet more tightly and achieve a better sealing effect.

[0022] Preferably, a sealing cover is provided at the liquid outlet, the sealing cover comprises an inner sealing ring and an outer sealing ring, and the liquid outlet is sandwiched between the inner sealing ring and the outer sealing ring.

[0023] By adopting the above technical solution, the sealing cover is beneficial to improving the sealing effect of the liquid outlet, and adopts the structure of inner sealing ring and outer sealing ring to enhance the sealing effect, making the liquid outlet cleaner and more sanitary.

[0024] Preferably, a plurality of shift holes are provided on the side wall of the cover body between the connecting portion and the liquid outlet, and the plurality of shift holes are distributed along the floating direction of the floating member. A first elastic sealing film is provided on the inner side wall of the cover body or on one end of the shift hole close to the inside of the cover body. A shift pin for inserting into the shift hole is also provided outside the cover body, and after the shift pin is inserted into the shift hole, it protrudes from the inner side wall of the cover body to form the limiting member.

[0025] By adopting the above technical solution, the position of the limit member is not fixed. The shift pin is inserted into the shift hole to change the position of the limit member, thereby changing the floating limit position of the floating member, so that the dosage of the liquid extrusion amount can be adjusted, which is more convenient to use. The structure is simple, easy to implement and low cost.

[0026] Preferably, the outer wall of the cover body is provided with a sliding hole along the floating direction of the floating part, and the side wall of the cover body is also provided with a positioning hole connected to the sliding hole, and the inner wall of the cover body or the sliding hole and the positioning hole are provided with a second elastic sealing membrane on one side close to the inner wall of the cover body; the sliding hole and the positioning hole are slidably connected with a sliding block, and when the sliding block slides into the positioning hole, the sliding block protrudes from the inner wall of the cover body and forms the limiting part.

[0027] By adopting the above technical solution, the position of the limit member is not fixed. The sliding hole and the positioning hole, as well as the sliding connection structure of the sliding block are used to change the position of the limit member, thereby changing the floating limit position of the floating member, so that the dosage of the liquid extrusion amount can be adjusted, which is more convenient to use. The structure is simple, easy to implement and low cost.

[0028] Preferably, the outer wall of the cover body is provided with a rotating through hole which is spirally spiraled around the cover body, and the inner wall of the cover body or the side of the rotating through hole close to the inner wall of the cover body is provided with a third elastic sealing membrane, and the rotating through hole is slidingly connected with a rotating part, and the rotating part is rotatably connected to the outer wall of the cover body, and the rotating part is provided with a sliding rotating block embedded in the rotating through hole, and the sliding rotating block protrudes from the inner wall of the cover body to form the limit part.

[0029] By adopting the above technical solution, the position of the limit member is not fixed. The rotational sliding connection structure of the rotating through hole and the rotating member is adopted to realize the change of the position of the limit member, thereby changing the floating limit position of the floating member, so that the dosage of the liquid extrusion amount can be adjusted, which is more convenient to use. In addition, the structure is simple, easy to implement and low cost.

[0030] Preferably, the outer side wall of the cover body is provided with a scale bar.

[0031] By adopting the above technical solution, the scale bar makes it convenient for the user to adjust the extrusion amount of quantitative extrusion.

[0032] Preferably, the cover body is arranged between the liquid outlet and the limiting member as a retractable section, and the retractable section is arranged as a bellows or a tubular structure having inner and outer retractable tubes.

[0033] By adopting the above technical solution, the relative change of the position of the limit member is achieved by changing the length of the cover body itself, thereby changing the upper floating limit position of the floating member to achieve adjustable dosage of liquid extrusion, which is more convenient to use. The structure is simple, easy to implement and low in cost.

[0034] In summary, the present application includes at least one of the following beneficial technical effects:

[0035] Since the floating member and the limiting member are arranged on the cover body, when the bottle body is inverted, the floating member floats up to the limit position, squeezing the bottle body, so that the liquid in the bottle body pushes the floating member to gradually approach the liquid outlet, and finally the abutting part moves to block the liquid outlet, completing a quantitative liquid extrusion; when the bottle body is loosened, air can enter the bottle body from the elastic valve, and at the same time, it is convenient for the floating member to leave the liquid outlet, which is convenient for the next quantitative liquid extrusion; the structure is simple, the cost is low, and it is convenient and easy to operate;

[0036] The limiting protrusion adopts a structure with a fixed extrusion dosage to achieve quantitative extrusion of the liquid, and the structure is simple and easy to implement;

[0037] Through the plug-in connection structure, the sliding connection structure or the rotatable sliding connection structure, and the retractable cover structure, the adjustable extrusion dosage can be achieved, which is more convenient to meet people's usage needs and the structure is not complicated. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application;

[0039] Figure 2 yes Figure 1 The cross-sectional view along the middle line AA is a state where the abutting portion abuts against the liquid outlet;

[0040] Figure 3 is a cross-sectional view of the floating member in Example 1 of the present application floating up to the limiting protrusion;

[0041] Figure 4 It is a schematic diagram of the exploded structure of Example 1 of the present application, mainly used to show the structure of the floating member;

[0042] Figure 5 It is a cross-sectional view of Example 2 of the present application, mainly used to show the structure of the floating groove and the floating protrusion;

[0043] Figure 6 is a cross-sectional view of Example 3 of the present application, mainly used to show the structure of the gear hole and the gear pin;

[0044] Figure 7 It is a schematic diagram of the overall structure of Example 4 of the present application;

[0045] Figure 8 It is a cross-sectional view of Example 4 of the present application, mainly used to show the structure of the sliding hole, the positioning hole and the sliding block;

[0046] Fig. 9 It is a schematic diagram of the overall structure of Example 5 of the present application;

[0047] Fig.10 It is a cross-sectional view of Example 5 of the present application, mainly used to show the structure of the rotating through hole, the rotating member and the sliding rotating block;

[0048] Fig.11 is a schematic diagram of the overall structure of Example 6 of the present application, in which the cover body is a bellows;

[0049] Fig.12 It is a schematic diagram of the overall structure of Example 6 of the present application, in which the cover body is a case of inner and outer telescopic tubes.

[0050] Figure numerals: 1. cover body; 2. connecting part; 3. liquid outlet; 4. floating member; 41. abutting part; 411. accommodating groove; 42. floating plate; 43. supporting member; 5. limiting member; 6. liquid outlet gap; 7. elastic valve; 8. sealing cover; 81. inner sealing ring; 82. outer sealing ring; 9. floating groove; 10. floating protrusion; 11. gear hole; 12. first elastic sealing membrane; 13. gear pin; 14. sliding hole; 15. positioning hole; 16. second elastic sealing membrane; 17. sliding block; 18. rotating through hole; 19. third elastic sealing membrane; 20. rotating member; 21. sliding rotating block. DETAILED DESCRIPTION

[0051] The following is combined with Figure 1-12 This application is described in further detail.

[0052] Embodiment 1:

[0053] The present application embodiment discloses a liquid quantitative extrusion cap. Figure 1 and Figure 2A liquid quantitative extrusion cap comprises a tubular cap body 1, one end of the cap body 1 is a liquid inlet, a connecting portion 2 for connecting the liquid inlet to an extrudable bottle body, and the other end is a liquid outlet 3 with a smaller opening, and an elastic valve 7 is installed at the liquid outlet 3. A floating member 4 is slidably connected in the cap body 1 along its own axial direction, and a contact portion 41 for blocking the liquid outlet 3 is fixed on the side of the floating member 4 close to the liquid outlet 3. A limiting member 5 for limiting the floating limit position of the floating member 4 is provided on the cap body 1. A liquid outlet gap 6 is provided between the floating member 4 and the inner wall of the cap body 1 and the limiting member 5. During use, the bottle body is inverted so that the floating member 4 floats to the limiting member 5, and at the same time, the liquid flows into the cavity between the floating member 4 and the liquid outlet 3 from the liquid outlet gap 6. The bottle body is squeezed so that the liquid in the bottle body pushes the floating member 4 close to the liquid outlet 3, and at the same time, under the action of the liquid pressure, the elastic valve 7 opens, and the liquid in the cavity between the floating member 4 and the liquid outlet 3 is squeezed out. When the abutment portion 41 gradually approaches and blocks the liquid outlet 3, the liquid is no longer squeezed out, and a quantitative amount of liquid is squeezed out. Loosen the bottle body. If the bottle body can rebound, the elastic valve 7 will open under the action of atmospheric pressure, allowing air to enter the bottle body. At the same time, the air entering from the liquid outlet 3 makes it easy for the abutment portion 41 to separate from the liquid outlet 3, or makes it difficult for the floating member 4 to fit the inner wall of the cover body 1 near the liquid outlet 3. When the bottle body rebounds, the elastic valve 7 is closed, which is convenient for the next use.

[0054] In this embodiment, the cover body 1 is a cylindrical tubular structure as a whole, and the connection structure between the connecting portion 2 and the squeezable bottle body can be set as a threaded connection or a clamping structure. The liquid outlet 3 is set as a circular hole, and the elastic valve 7 is embedded in the roll groove of the circular hole of the liquid outlet 3. The elastic valve 7 is set as a cross silicone valve, and the cross silicone valve protrudes toward the inside of the cover body 1. The cross silicone valve includes an embedding portion and an elastic membrane, and the embedding portion is annularly embedded in the roll groove, and the embedding portion is in Figure 2 The cross section is trapezoidal in shape as a whole. The elastic membrane is fixed to one side of the embedded part close to the liquid outlet 3, and the cross section of the embedded part on this side is parallel to the short sides of the trapezoid. A cross opening is provided on the elastic membrane. This structure enables the cross silicone valve to have a more stable elastic rebound ability and a better sealing effect. When the bottle body is inverted and not squeezed, the cross silicone valve with a raised setting does not allow liquid to flow out easily because the cross silicone valve needs to overcome a certain pressure to open. In the process of squeezing the bottle body, the cross silicone valve is opened by the squeezing force, thereby achieving the outflow of liquid. After squeezing the bottle body, the cross silicone valve returns to its initial state under the action of its own elastic deformation, thereby closing the cross silicone valve, making it difficult for liquid to flow out, and having a better sealing effect.

[0055] In order to further improve the sealing effect and cleanliness of the liquid outlet 3 of the cover body 1, a sealing cover 8 is provided at the liquid outlet 3. The sealing cover 8 is cylindrical in shape as a whole, and an inner sealing ring 81 and an outer sealing ring 82 are integrally formed on one side of the sealing cover 8 close to the liquid outlet 3. The inner sealing ring 81 and the outer sealing ring 82 can be made of elastic deformation material, and the side wall interference clip of the liquid outlet 3 is provided between the inner sealing ring 81 and the outer sealing ring 82. The double sealing structure of the inner sealing ring 81 and the outer sealing ring 82 has a good sealing effect.

[0056] In this embodiment, the limiting member 5 is configured as a limiting protrusion integrally formed on the inner wall of the cover body 1, and a plurality of limiting protrusions are provided, and are evenly spaced on the circumference of the cover body 1. The interval between the limiting protrusions forms a liquid outlet gap 6. The limiting protrusions fix and limit the maximum floating position of the floating member 4, so that the amount of liquid squeezed out of the bottle body each time is fixed, and the dosage cannot be adjusted.

[0057] Reference Figure 3 and Figure 4 The floating member 4 includes a floating plate 42 that is slidably connected to the cover body 1. The floating plate 42 is a circular plate structure. The radius of the floating plate 42 is smaller than the inner diameter of the portion of the cover body 1 where the floating member 4 is provided. Therefore, the liquid outlet gap 6 is located between the edge of the floating plate 42 and the inner wall of the cover body 1.

[0058] The abutment portion 41 is cylindrical in shape as a whole, and is fixedly mounted at the center of one side of the floating plate 42 close to the liquid outlet 3, and corresponds to the position of the liquid outlet 3. The outer wall of the abutment portion 41 at one end away from the floating plate 42 is in a closed shape, and is used for interference abutment at the inner wall of the liquid outlet 3. Since the size of the floating plate 42 is smaller than the inner diameter of the cover body 1, the edge of the floating plate 42 does not float completely in contact with the inner wall of the cover body 1, so the position of the abutment portion 41 will be slightly offset during the floating process. The closed structure is conducive to the outer wall of the abutment portion 41 abutting and gradually aligning with the liquid outlet 3 along the edge of the liquid outlet 3, thereby facilitating the effect of blocking.

[0059] In order to further achieve a better blocking effect, the abutting portion 41 can be configured as an elastic abutting portion. The elastic abutting portion can be made of silicone, and the elastic abutting portion can block the liquid outlet 3 more closely.

[0060] In addition, in order to facilitate the separation of the floating member 4 from the inner wall of the cover body 1 near the liquid outlet 3 during the rebound of the bottle body, a cylindrical receiving groove 411 is provided at the center of the abutting portion 41. During the rebound of the bottle body, the elastic valve 7 opens, and the receiving groove 411 is conducive to the air "pushing open" the floating member 4 from the elastic valve 7, which makes it difficult for the floating plate 42 to fit the inner wall of the cover body 1, and facilitates the separation of the two; on the other hand, since the elastic valve 7 is concave toward one side of the floating member 4, it is not easy to affect the use of the elastic valve 7.

[0061] In order to further optimize the structure of the product, a support member 43 is integrally formed on the side of the floating member 4 close to the liquid outlet 3, and the support member 43 protrudes from the surface of the floating plate 42. There are multiple support members 43, and they are evenly spaced at the edge of the floating plate 42, and the height of the support member 43 is lower than the height of the abutment portion 41. In the process of the floating plate 42 gradually approaching the liquid outlet 3, the support member 43 is used to abut the side wall of the cover body 1 close to the liquid outlet 3, so that a cavity is formed between the floating member 4 and the side wall of the cover body 1, so that there is atmospheric pressure between the two, so that the floating plate 42 is not easy to fit to the side wall of the cover body 1 close to the liquid outlet 3, and it is easy to separate from the side wall of the cover body 1. At the same time, the support member 43 increases the structural strength of the floating member 4, so that the floating member 4 is not easy to deform during the extrusion process. In addition, the contact area between the floating member 4 and the inner wall of the cover body 1 is increased, so that the floating member 4 is more stable during the floating process and is not easy to deflect and be stuck on the inner wall of the cover body 1. Moreover, under the action of the support member 43 , the abutting portion 41 is not easily over-deformed or over-abutted against and squeezed by the liquid outlet 3 , which is beneficial to protecting the structure at the liquid outlet 3 and the structure of the abutting portion 41 .

[0062] The implementation principle of a liquid quantitative extrusion cap in the embodiment of the present application is as follows: during use, remove the sealing cap 8, first invert the squeezable bottle body, and due to the presence of the elastic valve 7, the liquid is not easy to leak out. Wait for the floating member 4 to float up to the limiting protrusion under the action of the buoyancy of the liquid, and at the same time, the liquid in the bottle body fills the accommodating cavity between the floating member 4 and the liquid outlet 3 through the liquid outlet gap 6. Squeeze the bottle body, the floating member 4 is squeezed by the liquid in the bottle body, and gradually approaches the liquid outlet 3. In the process of the floating member 4 approaching the liquid outlet 3, the elastic valve 7 is opened by the pressure of the liquid, and the liquid between the floating member 4 and the liquid outlet 3 is squeezed out from the liquid outlet 3. When the abutting portion 41 abuts against the liquid outlet 3 to block the liquid outlet 3, the liquid outlet 3 no longer discharges liquid, that is, a quantitative extrusion of the liquid is completed, and the extruded dose is the amount of liquid between the floating member 4 and the liquid outlet 3 when the floating member 4 floats to the position of the limiting member 5. After squeezing the liquid, release the bottle body. If the bottle body can rebound, the elastic valve 7 opens under the action of the gas pressure outside the bottle body, and air enters the bottle body. The support member 43 and the receiving groove 411 make it easy for the floating member 4 to separate from the inner wall of the cover body 1 at the liquid outlet 3, so as to facilitate the next use. The structure of this embodiment is simple and easy to implement, with low cost, and can ensure the quantitative output of liquid, and is easy to use and operate.

[0063] Embodiment 2:

[0064] The present application embodiment discloses a liquid quantitative extrusion cap. Figure 5, a liquid quantitative extrusion cover, the structure is basically the same as that of embodiment 1, the difference is that the structure of the limiter 5 is different: the inner wall of the cover body 1 is provided with a floating groove 9 along the floating direction of the floating member 4, and there can be multiple floating grooves 9, which are evenly distributed on the circumference of the cover body 1. The edge of the floating plate 42 corresponds to the position of the floating groove 9 and is integrally formed with a floating protrusion 10 that is slidably connected in the floating groove 9, and the end of the floating groove 9 for sliding forms a limiter 5. One end of the floating groove 9 can limit the maximum floating position of the floating member 4 to control the extrusion amount of the liquid; at the same time, the end of the floating groove 9 close to the liquid outlet 3 can also limit the distance of the floating member 4 close to the liquid outlet 3, which is beneficial to protect the abutment portion 41 and the liquid outlet 3.

[0065] The implementation principle of the quantitative liquid extrusion cap of the present application embodiment is: the floating member 4 is connected to the floating groove 9 by sliding to limit the floating limit position of the floating member 4, thereby realizing quantitative liquid extrusion. At the same time, it makes it difficult for the floating member 4 to rotate relative to each other, which is conducive to ensuring the stability of the floating member 4 during the floating process.

[0066] Embodiment 3:

[0067] The present application embodiment discloses a liquid quantitative extrusion cap. Figure 6 , a liquid quantitative extrusion cap, which has a structure basically the same as that of Example 1, except that the structure of the stopper 5 is different: a plurality of shift holes 11 are provided on the side wall of the cover body 1 between the connecting portion 2 and the liquid outlet 3, and the plurality of shift holes 11 are distributed along the axial direction of the cover body 1. A first elastic sealing film 12 is provided on the inner side wall of the cover body 1 or on one end of the shift hole 11 close to the inside of the cover body 1, and the first elastic sealing film 12 can be made of a silicone film. A shift pin 13 for inserting into the shift hole 11 is also provided outside the cover body 1, and the end of the shift pin 13 after being inserted into the shift hole 11 protrudes from the inner side wall of the cover body 1 to form a stopper 5.

[0068] In order to facilitate the user to observe the adjustable dose, a scale bar is provided on the outer side wall of the cover body 1 to serve as a mark. The scale bar can also be set as a convex or concave structure to facilitate the use of special groups of people.

[0069] The implementation principle of the liquid quantitative extrusion cap of the embodiment of the present application is: the gear pin 13 is inserted into the gear hole 11 as the limiter 5, and the position of the limiter 5 is changed, thereby changing the floating limit position of the floating member 4, so that the dosage of the liquid extrusion amount can be adjusted. The plug-in structure is used to change the position of the limiter 5, which is more convenient to use and suitable for different dosage requirements. In addition, the structure is simple, easy to implement, and low in cost.

[0070] Embodiment 4:

[0071] The present application embodiment discloses a liquid quantitative extrusion cap. Figure 7 and Figure 8 , a liquid quantitative extrusion cover, which has a structure basically the same as that of Example 1, except that the structure of the limiter 5 is different: the outer wall of the cover body 1 is provided with a sliding hole 14 along the floating direction of the floating member 4, and a positioning hole 15 connected to the sliding hole 14. The inner wall of the cover body 1 or the side of the sliding hole 14 and the positioning hole 15 close to the inner wall of the cover body 1 is provided with a second elastic sealing film 16, and the second elastic sealing film 16 can be made of a silicone film. The sliding hole 14 and the positioning hole 15 are slidably connected with a sliding block 17. When the sliding block 17 slides into the positioning hole 15, the end of the sliding block 17 extending into the positioning hole 15 protrudes from the inner wall of the cover body 1 and forms a limiter 5.

[0072] The implementation principle of the liquid quantitative extrusion cap of the embodiment of the present application is: the sliding connection structure of the sliding hole 14 and the positioning hole 15 cooperates with the sliding block 17 to realize the change of the position of the limiter 5, so that it is easy to adjust the floating limit position of the floating member 4, so that the dosage of the liquid extrusion amount can be adjusted. The position change of the limiter 5 is realized by sliding, which is more convenient to operate and use, and is suitable for different dosage requirements. In addition, the structure is simple, easy to implement, and low in cost.

[0073] Embodiment 5:

[0074] The present application embodiment discloses a liquid quantitative extrusion cap. Fig. 9 and Fig.10 A liquid quantitative extrusion cap includes a structure that is basically the same as that of Example 1, except that the structure of the limiter 5 is different: the outer wall of the cover body 1 is provided with a rotating through hole 18 that spirals around the cover body 1, and the inner wall of the cover body 1 or the side of the rotating through hole 18 close to the inner wall of the cover body 1 is provided with a third elastic sealing film 19, and the third elastic sealing film 19 can be made of a silicone film. A rotating member 20 is slidably connected to the rotating through hole 18, and the rotating member 20 is annular or cylindrical in shape as a whole. The rotating member 20 is rotatably connected and sleeved on the outer wall of the cover body 1, and a sliding rotating block 21 embedded in the rotating through hole 18 is integrally formed on the side of the rotating member 20 close to the cover body 1, and the sliding rotating block 21 protrudes from the inner wall of the cover body 1 to form a limiter 5.

[0075] The implementation principle of the liquid quantitative extrusion cap of the embodiment of the present application is: the rotation through hole 18 is used to cooperate with the rotation and sliding connection structure of the sliding rotating block 21 on the rotating member 20 to achieve the change of the position of the limit member 5, thereby changing the floating limit position of the floating member 4, so that the dosage of the liquid extrusion amount can be adjusted. The rotation method is used to change the position of the limit member 5, which is more convenient to operate and use. The structure is simple, easy to implement, and low in cost.

[0076] Embodiment 6:

[0077] The present application embodiment discloses a liquid quantitative extrusion cap. Fig.11 and Fig.12 A liquid quantitative extrusion cover is basically the same as that of Example 1 or Example 2, except that the structure of the cover body 1 is different: the limiting protrusion is still a limiting protrusion integrally formed on the inner wall of the cover body 1 or is the end of the floating groove 9, but the part of the cover body 1 located between the liquid outlet 3 and the limiting member 5 is set as a telescopic section, and the telescopic section can be made of a corrugated tube, or a telescopic structure with inner and outer telescopic tubes.

[0078] The implementation principle of the liquid quantitative extrusion cap of the embodiment of the present application is: by changing the length of the cap body 1 itself, the position of the limiter 5 is indirectly changed, thereby limiting the floating limit position of the floating member 4. The dosage of the liquid extrusion amount can be adjusted by adjusting the telescopic length of the telescopic section, which is more convenient to use, and the structure is simple, easy to implement, and low in cost.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A liquid quantitative extrusion cap, comprising a cap body (1), one end of the cap body (1) being a liquid inlet, the liquid inlet being connected to a squeezable bottle body via a connecting portion (2), and the other end being a liquid outlet (3), the liquid outlet (3) being provided with an elastic valve (7), characterized in that: A floating member (4) is slidably connected inside the cover body (1); a contact portion (41) for blocking the liquid outlet (3) is provided on a side of the floating member (4) close to the liquid outlet (3); a limiting member (5) for limiting the maximum range of movement of the floating member (4) away from the liquid outlet (3) is provided on the cover body (1); a liquid outlet gap (6) is provided between the floating member (4), the inner wall of the cover body (1) and the limiting member (5); A plurality of shift holes (11) are arranged on the side wall of the cover body (1) between the connecting portion (2) and the liquid outlet (3), and the plurality of shift holes (11) are distributed along the floating direction of the floating member (4). A first elastic sealing film (12) is arranged on the inner side wall of the cover body (1) or on one end of the shift hole (11) close to the inside of the cover body (1). A shift pin (13) for inserting into the shift hole (11) is also arranged outside the cover body (1). After the shift pin (13) is inserted into the shift hole (11), it protrudes from the inner side wall of the cover body (1) to form the limiting member (5); or, The outer wall of the cover body (1) is provided with a sliding hole (14) along the floating direction of the floating member (4); the side wall of the cover body (1) is also provided with a positioning hole (15) connected to the sliding hole (14); the inner wall of the cover body (1) or the side of the sliding hole (14) and the positioning hole (15) close to the inner wall of the cover body (1) are provided with a second elastic sealing membrane (16); the sliding hole (14) and the positioning hole (15) are slidably connected with a sliding block (17); when the sliding block (17) slides into the positioning hole (15), the sliding block (17) protrudes from the inner wall of the cover body (1) and forms the limiting member (5); or, The outer wall of the cover body (1) is provided with a rotating through hole (18) which is spirally spiraled around the circumference of the cover body (1); the inner wall of the cover body (1) or the side of the rotating through hole (18) close to the inner wall of the cover body (1) is provided with a third elastic sealing membrane (19); the rotating through hole (18) is slidably connected to a rotating member (20); the rotating member (20) is rotatably connected to the outer wall of the cover body (1); the rotating member (20) is provided with a sliding rotating block (21) embedded in the rotating through hole (18); the sliding rotating block (21) protrudes from the inner wall of the cover body (1) to form the limiting member (5); The outer side wall of the cover body (1) is provided with a scale bar.

2. A liquid quantitative extrusion cap according to claim 1, characterized in that: The floating member (4) comprises a floating plate (42) slidably connected inside the cover body (1), the abutment portion (41) is fixedly connected to the floating plate (42) at a position corresponding to the liquid outlet (3), and the liquid outlet gap (6) is located between the floating plate (42) and the inner side wall of the cover body (1).

3. A liquid quantitative extrusion cap according to claim 1, characterized in that: A support member (43) is provided on one side of the floating member (4) close to the liquid outlet (3), and the support member (43) is used to abut against a side wall of the cover body (1) close to the liquid outlet (3), and the height of the support member (43) is lower than the height of the abutting portion (41).

4. A liquid quantitative extrusion cap according to any one of claims 1 to 3, characterized in that: The outer wall of the abutment portion (41) is in a closed shape and is used for interference abutment against the inner wall of the liquid outlet (3).

5. A liquid quantitative extrusion cap according to claim 4, characterized in that: The abutment portion (41) is configured as an elastic abutment portion.

6. The liquid quantitative extrusion cap according to claim 1, characterized in that: The elastic valve (7) protrudes toward one side of the connecting portion (2).

7. The liquid quantitative extrusion cap according to claim 1, characterized in that: A sealing cover (8) is provided at the liquid outlet (3), the sealing cover (8) comprising an inner sealing ring (81) and an outer sealing ring (82), and the liquid outlet (3) is sandwiched between the inner sealing ring (81) and the outer sealing ring (82).

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