A metering cap

Abstract

This invention discloses a metering cap, comprising: a bottom cap body with an internal baffle, on which an upwardly extending metering cylinder is formed; a lower sealing assembly with a lower sealing end at the bottom and a connecting end at the top, the lower sealing end being capable of closing the bottom of the metering cylinder, and the connecting end protruding upward from the metering cylinder; and an upper sealing assembly having an upper sealing end, the upper sealing assembly being capable of pressing the connecting end downward to open the bottom of the metering cylinder, and the upper sealing end abutting against the top of the metering cylinder; the upper sealing assembly being capable of moving upward to open the top of the metering cylinder, and driving the connecting end upward to close the bottom of the metering cylinder with the lower sealing end. This invention makes it more convenient to add liquid to the metering cylinder or pour out the fluid from the metering cylinder, improves the efficiency of quantitative liquid dispensing, and is more practical.

Description

Technical Field

[0001] This invention relates to a cap, and more particularly to a metering cap. Background Technology

[0002] When pouring fluid from a bottle, the amount poured out is often difficult to measure. Alternatively, the bottle cap may have markings to measure the amount poured, but this can easily lead to overflow or spillage. Therefore, some bottles now come with measuring caps. These can be opened by rotating the cap, then the bottle is inverted to fill the cap, the valve is closed, and the cap is reopened to pour out the fluid. However, these caps require frequent rotation, which is particularly inconvenient when the bottle is inverted. Users may close the valve while the bottle is tilted, causing fluid to flow back into the bottle and resulting in inaccurate measurements. Therefore, a more convenient measuring cap is urgently needed. Summary of the Invention

[0003] The purpose of this invention is to provide a metering cap to solve one or more technical problems existing in the prior art, and at least provide a beneficial option or create conditions.

[0004] The solution to the technical problem of this invention is:

[0005] A metering cap includes: a bottom cap body with an internal baffle, on which an upwardly extending metering cylinder is formed; a lower sealing assembly with a lower sealing end at the bottom and a connecting end at the top, the lower sealing end being capable of closing the bottom of the metering cylinder, and the connecting end protruding upward from the metering cylinder; and an upper sealing assembly having an upper sealing end, the upper sealing assembly being capable of pressing the connecting end downward to open the bottom of the metering cylinder by the lower sealing end, and the upper sealing end abutting against the top of the metering cylinder; the upper sealing assembly being capable of moving upward to open the top of the metering cylinder by the upper sealing end, and driving the connecting end upward to close the bottom of the metering cylinder by the lower sealing end.

[0006] This technical solution has at least the following beneficial effects: The bottom cap is connected to the external bottle body. Under normal conditions, the lower sealing end of the lower sealing assembly closes the bottom of the metering cylinder, thus sealing the bottle. When it is necessary to quantitatively pour out the fluid from the bottle, the upper sealing assembly is pressed down, causing the upper sealing assembly to press down on the linkage end, opening the bottom of the metering cylinder. The upper sealing end then abuts against the top of the metering cylinder, closing the top. At this point, the bottle is inverted, allowing the fluid inside to enter the metering cylinder and be quantitatively filled. After completion, the upper sealing assembly can directly open the top of the metering cylinder and, through the linkage end, move the lower sealing end upwards to close the bottom of the metering cylinder, thus pouring out the fluid from the metering cylinder. This makes the operation of quantitatively adding or pouring out liquid from the metering cylinder more convenient, improves the efficiency of quantitative liquid dispensing, and enhances practicality.

[0007] As a further improvement to the above technical solution, the present invention also includes a flow guide tube, which is sleeved on the top outer side of the metering cylinder. A retaining ring extending towards the center of the flow guide tube is formed at its top end. The upper sealing end can move upwards to abut against the bottom side of the retaining ring, and a gap exists between the upper sealing end and the inner wall of the flow guide tube. When the upper sealing end moves between the retaining ring and the top of the metering cylinder, the fluid in the metering cylinder can flow out through the gap and along the inner wall of the flow guide tube from its end. When the upper sealing end moves to the end of its stroke, it abuts against the bottom side of the retaining ring, which restricts further upward movement of the upper sealing end. The abutment between the upper sealing end and the retaining ring seals the top of the flow guide tube, further improving the sealing performance of the bottle.

[0008] As a further improvement to the above technical solution, the lower sealing assembly includes a lower baffle, a transmission cylinder, and a connecting rod. The lower baffle is connected to the transmission cylinder, which extends into the metering cylinder. The bottom end of the connecting rod is connected to the transmission cylinder, and the top end of the connecting rod forms the connecting end. The lower baffle forms the lower sealing end. The lower baffle, acting as a lower sealing end to block and close the bottom of the metering cylinder, moves up and down together with the transmission cylinder and the connecting rod. When the upper sealing assembly moves downward, it presses down on the top end of the connecting rod, thereby causing the lower baffle to move downward through the transmission cylinder, opening the bottom of the metering cylinder. When the upper sealing assembly moves upward, it moves the connecting rod upward, thereby causing the lower baffle to move closer to the metering cylinder through the transmission cylinder, closing the top of the metering cylinder.

[0009] As a further improvement to the above technical solution, the upper sealing assembly includes an upper baffle, a transmission frame, and a spring. A partition is connected inside the metering cylinder, and a spacer is connected to the top side of the middle part of the partition. An avoidance hole is provided on the partition inside the spacer. The transmission cylinder passes upward through the avoidance hole. The transmission frame is connected to the bottom side of the upper baffle. The transmission frame can move up and down outside the linkage rod. A limiting protrusion is formed at the top of the linkage rod to restrict the transmission frame from moving upward away from the linkage rod. The bottom of the spring is inserted into the spacer, and the top of the spring abuts against the upper baffle. The upper baffle forms the upper sealing end. The upper baffle moves up and down together with the transmission frame. During use, force is applied to the upper baffle, pressing it down and causing the transmission frame to move downwards outside the connecting rod. At this time, the upper baffle also compresses the spring. If the upper baffle does not abut against the connecting rod during its downward movement, the lower baffle will not move with it. When the upper baffle moves down to abut against the top of the connecting rod, it opens the bottom of the metering cylinder, allowing fluid to enter. The upper baffle then blocks and seals the top of the metering cylinder. After the metering cylinder has finished dispensing the fluid, the pressure on the upper baffle is released, and the spring force moves the upper baffle back up to its original position. During this upward movement... The transmission frame moves upward along the linkage rod. When it abuts against the limit protrusion, it drives the linkage rod to move upward together, thereby causing the lower baffle to block and seal the bottom of the metering cylinder. When the upper baffle moves up to the retaining ring, the metering cylinder is sealed from top to bottom. When it is necessary to pour out the fluid in the metering cylinder, the upper baffle is pressed down a short distance. Without contacting the linkage rod, the lower baffle keeps the bottom of the metering cylinder sealed. The fluid in the metering cylinder can flow out through the gap between the upper baffle and the inner wall of the guide tube. In this way, by the play-off movement between the upper and lower sealing components, the fluid can be cleverly replenished into the metering cylinder and then poured out.

[0010] As a further improvement to the above technical solution, the partition plate is provided with multiple connecting holes surrounding the spacer sleeve. When it is necessary to replenish fluid into the metering cylinder, the fluid can be replenished into the metering cylinder through the multiple connecting holes, thereby increasing the speed of replenishing fluid into the metering cylinder and realizing rapid metering of liquid.

[0011] As a further improvement to the above technical solution, a pressure column is connected to the top side of the upper baffle. When it is necessary to apply force to press down on the upper baffle, the force can be applied to the pressure column, which will drive the upper baffle to move downward. This can improve the stability of the force applied to the upper baffle, reduce the force applied to the edge of the upper baffle and thus reduce the impact on the stability of the connection between the transmission frame and the connecting rod, and better extend the service life.

[0012] As a further improvement to the above technical solution, a guide nozzle is connected to the baffle ring. When the fluid flows out of the guide tube, it can be guided by the guide nozzle before being discharged outward, reducing the spread of fluid at the edge of the guide tube and improving the user experience.

[0013] As a further improvement to the above technical solution, the guide tube and the metering cylinder are detachably connected. When maintenance of the upper and lower sealing components is required, the guide tube can be removed from the metering cylinder to open the internal structure for easy cleaning and maintenance.

[0014] As a further improvement to the above technical solution, the present invention also includes an upper cover body, which is connected to the top of the bottom cover body and encloses the lower sealing assembly and the upper sealing assembly. When liquid dispensing is not required, the upper cover body can be connected to the top of the bottom cover body. In this case, the upper cover body encloses the lower sealing assembly and the upper sealing assembly, preventing accidental pressure on the upper pressure plate and better protecting the dispensing cap.

[0015] As a further improvement to the above technical solution, the bottom cover has an annular mounting groove inside, and the bottom end of the top cover is connected to the annular mounting groove. When connecting the top cover to the bottom cover, the bottom end of the top cover can be inserted into the annular mounting groove, which improves the stability of the connection between the top cover and the bottom cover and further enhances the sealing performance of the bottom cover. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly explained below. Obviously, the described drawings are only a part of the embodiments of the present invention, and not all of them. Those skilled in the art can obtain other design schemes and drawings based on these drawings without creative effort.

[0017] Figure 1 This is a front view of the entire invention after removing the top cover.

[0018] Figure 2 yes Figure 1 A schematic diagram of the AA cross-sectional structure.

[0019] Figure 3 This is a three-dimensional view of the entire invention.

[0020] In the attached diagram: 100-bottom cover, 110-baffle, 120-quantitative cylinder, 121-partition, 122-sleeve, 200-guide cylinder, 210-retaining ring, 220-guide nozzle, 310-lower baffle, 320-transmission cylinder, 330-connecting rod, 331-limiting protrusion, 410-upper baffle, 411-pressure column, 420-transmission frame, 430-spring, 500-upper cover. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the description of this invention, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0023] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0024] In the description of this invention, unless otherwise explicitly defined, terms such as "set up," "install," and "connect" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this invention in conjunction with the specific content of the technical solution.

[0025] Reference Figure 1 , Figure 2 and Figure 3 A metering cap includes a bottom cap body 100, a lower sealing assembly, and an upper sealing assembly, wherein:

[0026] The bottom cover 100 is provided with a baffle 110, and an upwardly extending metering cylinder 120 is formed on the baffle 110. In practical applications, the bottom cover 100 may be provided with a groove, and the baffle 110 is formed on the bottom of the groove.

[0027] The bottom of the lower sealing assembly has a lower sealing end, and the top of the lower sealing assembly has a connecting end. The lower sealing end can close the bottom of the metering cylinder 120, and the connecting end protrudes upward from the metering cylinder 120.

[0028] The upper sealing assembly has an upper sealing end, which can move up and down. Since the connecting end protrudes upward from the metering cylinder 120, when the upper sealing end moves downward toward the top of the metering cylinder 120, the upper sealing assembly can press the connecting end downward so that the lower sealing end opens the bottom of the metering cylinder 120, and the upper sealing end abuts against the top of the metering cylinder 120; the upper sealing assembly can move upward so that the upper sealing end opens the top of the metering cylinder 120, and drives the connecting end upward so that the lower sealing end closes the bottom of the metering cylinder 120.

[0029] As described above, when the bottom cover 100 is connected to the bottle body of the external device, under normal conditions, the lower sealing end of the lower sealing assembly closes the bottom end of the metering cylinder 120, thereby sealing the bottle body. When it is necessary to quantitatively pour out the fluid in the bottle, the upper sealing assembly is pressed down, and the upper sealing assembly presses down the linkage end, so that the lower sealing end opens the bottom end of the metering cylinder 120, and the upper sealing end abuts against the top end of the metering cylinder 120, closing the top end of the metering cylinder 120. At this time, the bottle is inverted, and the fluid in the bottle can enter the metering cylinder 120 and be quantitatively filled into the metering cylinder 120. After completion, the upper sealing assembly can directly open the top end of the metering cylinder 120, and through the linkage end, drive the lower sealing end to move upward to close the bottom end of the metering cylinder 120, realizing the pouring out of the fluid in the metering cylinder 120. In this way, it is more convenient to quantitatively add liquid to the metering cylinder 120 or pour out the fluid in the metering cylinder 120, improves the efficiency of quantitative liquid dispensing, and is more practical.

[0030] Fluid can be poured directly from the metering cylinder 120. In order to better guide the poured fluid and limit the upward movement of the upper baffle 410, the present invention also includes a flow guide cylinder 200. The flow guide cylinder 200 is sleeved on the top outer side of the metering cylinder 120. A baffle ring 210 extending towards the center of the flow guide cylinder 200 is formed at the top of the flow guide cylinder 200. The upper sealing end can be moved upward to abut against the bottom side of the baffle ring 210. There is a gap between the upper sealing end and the inner wall of the flow guide cylinder 200. When the upper sealing end moves between the retaining ring 210 and the top of the metering cylinder 120, the fluid in the metering cylinder 120 can flow out through the gap between the upper sealing end and the inner wall of the guide cylinder 200, and flow out from the end of the guide cylinder 200 along the inner wall of the guide cylinder 200. When the upper sealing end moves to the end of its stroke, the upper sealing end abuts against the bottom side of the retaining ring 210. The retaining ring 210 restricts the further upward movement of the upper sealing end, and the contact between the upper sealing end and the retaining ring 210 achieves the sealing of the top of the guide cylinder 200, further improving the sealing performance of the bottle.

[0031] As a specific structural embodiment of the lower sealing assembly, the lower sealing assembly includes a lower baffle 310, a transmission cylinder 320, and a connecting rod 330. The transmission cylinder 320 is connected to the transmission cylinder 320 and extends into the metering cylinder 120. The bottom end of the connecting rod 330 is connected to the transmission cylinder 320, and the top end of the connecting rod 330 forms the connecting end. The lower baffle 310 forms the lower sealing end. In practical applications, the bottom end of the connecting rod 330 is inserted into the transmission cylinder 320, and the two can be quickly connected by a snap-fit, so that the connecting rod 330 and the transmission cylinder 320 are connected as one unit. A step is formed between the top end of the transmission cylinder 320 and the outer side of the connecting rod 330, which can conveniently limit the downward movement of the transmission frame 420. The lower baffle 310 serves as a lower sealing end that blocks and closes the bottom of the metering cylinder 120. It moves up and down together with the transmission cylinder 320 and the connecting rod 330. When the upper sealing assembly moves down, it presses down the top of the connecting rod 330, thereby driving the lower baffle 310 to move downward through the transmission cylinder 320, so that the lower baffle 310 opens the bottom of the metering cylinder 120. When the upper sealing assembly moves up, it drives the connecting rod 330 to move up, thereby driving the lower baffle 310 to approach the metering cylinder 120 through the transmission cylinder 320, closing the top of the metering cylinder 120.

[0032] As a specific structural embodiment of the upper sealing assembly, the upper sealing assembly includes an upper baffle 410, a transmission frame 420, and a spring 430. A partition 121 is connected inside the metering cylinder 120. A spacer 122 is connected to the top side of the middle portion of the partition 121. An clearance hole is provided on the partition 121 within the spacer 122. The transmission cylinder 320 passes upward through the clearance hole. The transmission frame 420 is connected to the bottom side of the upper baffle 410. The transmission frame 420 can move up and down outside the connecting rod 330. A limiting protrusion 331 is formed at the top of the connecting rod 330 to restrict the transmission frame 420 from moving upward away from the connecting rod 330. The bottom of the spring 430 is inserted into the spacer 122, and the top of the spring 430 abuts against the upper baffle 410. 410 forms the upper sealing end. In practical applications, the transmission frame 420 can be a cylindrical structure, directly sleeved on the outside of the connecting rod 330, and a clearance position is provided at the position of the limiting protrusion 331 corresponding to the transmission frame 420, so that the transmission frame 420 can move up and down relative to the connecting rod 330. Alternatively, it can be two frames located on both sides of the connecting rod 330, using the two frames to be tightly attached to both sides of the connecting rod 330 for horizontal limitation. At this time, the two limiting protrusions 331 are located in the two frames. When the two frames move upward relative to the connecting rod 330 into position, the two frames will abut against the two limiting protrusions 331, thereby driving the connecting rod 330 to move upward as a whole. The spring 430 can be sleeved on the outside of the transmission cylinder 320 and the transmission frame 420, which helps to prevent the spring 430 from twisting when compressed.

[0033] In this embodiment of the upper sealing assembly, the upper baffle 410 moves up and down together with the transmission frame 420. During use, force is applied to the upper baffle 410, pressing it down and causing the transmission frame 420 to move downwards outside the linkage rod 330. At this time, the upper baffle 410 also compresses the spring 430. When the upper baffle 410 does not abut against the linkage rod 330 during its downward movement, the lower baffle 310 will not move with it. When the upper baffle 410 moves down to abut against the top of the linkage rod 330, it can drive the lower baffle 310 to open the bottom of the metering cylinder 120. Fluid then enters the metering cylinder 120, while the upper baffle 410 blocks and seals the top of the metering cylinder 120. After the metering cylinder 120 has finished metering the fluid, the pressure on the upper baffle 410 is released, and the elastic force of the spring 430 moves the upper baffle 410 upwards. During the resetting process, as the upper baffle 410 moves upward, the transmission frame 420 moves upward along the linkage rod 330. When it abuts against the limiting protrusion 331, it drives the linkage rod 330 to move upward together, thereby causing the lower baffle 310 to block and seal the bottom of the metering cylinder 120. When the upper baffle 410 moves upward to the retaining ring 210, the upper and lower parts of the metering cylinder 120 can be sealed. When it is necessary to pour out the fluid in the metering cylinder 120, the upper baffle 410 is pressed down a short distance. Without contacting the linkage rod 330, the lower baffle 310 keeps the bottom of the metering cylinder 120 sealed. The fluid in the metering cylinder 120 can flow outward from the gap between the upper baffle 410 and the inner wall of the guide cylinder 200. In this way, by the play-off movement between the upper and lower sealing components, the fluid can be cleverly replenished into the metering cylinder 120 and then poured out.

[0034] In the above embodiment, since the partition 121 is provided with a clearance hole, the fluid can flow directly into the metering cylinder 120 through the hole between the transmission cylinder 320 and the inner wall of the clearance hole. However, the flow rate is slow and the efficiency is low. In order to improve the efficiency of fluid filling into the metering cylinder 120, in this embodiment, the partition 121 is provided with multiple connecting holes around the spacer 122. When it is necessary to replenish fluid into the metering cylinder 120, the fluid can be replenished into the metering cylinder 120 through the multiple connecting holes, thus increasing the speed of replenishing fluid into the metering cylinder 120 and realizing rapid metering of liquid.

[0035] When it is necessary to press the upper baffle 410, force can be applied directly to the upper baffle 410. For example, if the transmission frame 420 is connected to the middle of the upper baffle 410, since the pressure on the upper baffle 410 is transmitted to the linkage 330 through the transmission frame 420, when the force is applied at the edge of the upper baffle 410, the upper baffle 410 will be subjected to torque at the transmission frame 420, affecting the overall structural stability. Therefore, in this embodiment, a pressure column 411 is connected to the top side of the upper baffle 410. When it is necessary to apply force to press down the upper baffle 410, force can be applied to the pressure column 411, which will drive the upper baffle 410 to move down. This can improve the stability of applying force to the upper baffle 410, reduce the impact of applying force at the edge of the upper baffle 410 on the stability of the connection between the transmission frame 420 and the linkage 330, and better extend the service life.

[0036] In some embodiments, a guide nozzle 220 is connected to the baffle ring 210. When fluid flows out of the guide tube 200, it can be guided by the guide nozzle 220 before being discharged outward, reducing the spread of fluid at the edge of the guide tube 200 and improving the user experience.

[0037] After the flow guide tube 200 and the metering cylinder 120 are connected, they do not need to be separated. However, in this embodiment, the flow guide tube 200 and the metering cylinder 120 are detachably connected. For example, the flow guide tube 200 and the metering cylinder 120 can be connected to each other by snap-fit. Specifically, multiple snap holes are arranged around the side wall of the flow guide tube 200, and multiple locking blocks are arranged around the outside of the metering cylinder 120. The multiple locking blocks and multiple snap holes cooperate with each other to achieve quick connection between the flow guide tube 200 and the metering cylinder 120. When it is necessary to remove the flow guide tube 200 from the metering cylinder 120, press the metering cylinder 120 inward at the position where the locking block is provided, so that the locking block disengages from the snap hole, and the flow guide tube 200 can be separated from the metering cylinder 120. When it is necessary to maintain the upper sealing assembly and the lower sealing assembly, the flow guide tube 200 can be removed from the metering cylinder 120 to open the internal structure for easy cleaning and maintenance.

[0038] The present invention also includes an upper cover 500, which is connected to the top of the bottom cover 100 and encloses the lower sealing assembly and the upper sealing assembly. When liquid dispensing is not required, the upper cover 500 can be connected to the top of the bottom cover 100. In this case, the upper cover 500 encloses the lower sealing assembly and the upper sealing assembly, preventing accidental pressure on the upper pressure plate and better protecting the dispensing cap. In practical applications, the upper cover 500 and the bottom cover 100 can be connected to each other by threads. For example, an external thread can be provided on the outside of the upper cover 500 and an internal thread can be provided on the inside of the bottom cover 100. The mutual engagement of the external and internal threads can achieve a quick connection between the upper cover 500 and the bottom cover 100. Alternatively, the upper cover 500 and the bottom cover 100 can be connected by snap-fit ​​connections.

[0039] In some embodiments, the bottom cover 100 has an annular mounting groove inside, and the bottom end of the upper cover 500 is connected to the annular mounting groove. When the upper cover 500 is connected to the bottom cover 100, the bottom end of the upper cover 500 can be inserted into the annular mounting groove, which improves the stability of the connection between the upper cover 500 and the bottom cover 100 and further enhances the sealing performance of the bottom cover 100. In practical applications, an annular inner retaining edge is provided on the bottom surface of the groove inside the bottom cover 100, and the space formed between the inner retaining edge and the inner sidewall of the bottom cover 100 forms the annular mounting groove.

[0040] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of this application.

Claims

1. A dosing cap, characterized by: The application relates to a bottom cover body (100) internally provided with a baffle (110) with an upwardly extending dosing cylinder (120) formed on the baffle (110); a lower blocking assembly with a lower blocking end and a linkage end, the lower blocking end being capable of closing the bottom end of the dosing cylinder (120), the linkage end being upwardly protruded from the dosing cylinder (120), the lower blocking assembly comprising a lower baffle (310), a transmission cylinder (320) and a linkage rod (330), the lower baffle (310) being connected to the transmission cylinder (320), the transmission cylinder (320) being inserted into the dosing cylinder (120), the bottom end of the linkage rod (330) being connected to the transmission cylinder (320), the top end of the linkage rod (330) forming the linkage end, the lower baffle (310) forming the lower blocking end; an upper blocking assembly with an upper blocking end, the upper blocking assembly being capable of pressing the linkage end downwardly to make the lower blocking end open the bottom end of the dosing cylinder (120), and the upper blocking end abutting against the top end of the dosing cylinder (120); the upper blocking assembly being capable of moving upwardly to make the upper blocking end open the top end of the dosing cylinder (120) and drive the linkage end to move upwardly to make the lower blocking end close the bottom end of the dosing cylinder (120), the upper blocking assembly comprising an upper baffle (410), a transmission frame (420) and a spring (430), the dosing cylinder (120) being internally connected with a partition plate (121), the partition plate (121) being connected with a partition sleeve (122) at the middle top side, the partition plate (121) being provided with an avoiding hole in the partition sleeve (122), the transmission cylinder (320) being upwardly penetrated through the avoiding hole, the transmission frame (420) being connected to the bottom side of the upper baffle (410), the transmission frame (420) being capable of moving up and down outside the linkage rod (330), the top end of the linkage rod (330) forming a limiting protrusion (331) for limiting the transmission frame (420) from moving upwardly out of the linkage rod (330), the bottom of the spring (430) being inserted into the partition sleeve (122), the top end of the spring (430) abutting against the upper baffle (410), the upper baffle (410) forming the upper blocking end. The application further comprises a flow guide cylinder (200) sleeved outside the top of the dosing cylinder (120), the top end of the flow guide cylinder (200) being formed with a baffle ring (210) extending to the center of the flow guide cylinder (200), the upper blocking end being capable of moving upwardly to abut against the bottom side of the baffle ring (210), the upper blocking end and the inner side wall of the flow guide cylinder (200) having a gap. A plurality of communication holes are arranged around the partition sleeve (122) on the partition plate (121). The top side of the upper baffle (410) is connected with a pressing column (411).

2. A dosing cap according to claim 1, characterized in that: The baffle ring (210) is connected with a flow guide nozzle (220).

3. A dosing cap according to claim 1, characterized in that: The flow guide cylinder (200) and the dosing cylinder (120) are detachably connected.

4. A dosing cap according to claim 1, characterized in that: ​ 5. A dosing cap according to claim 2, characterized in that: ​ 6. A dosing cap according to claim 2, characterized in that: ​ 7. A dosing cap according to claim 1, characterized in that: Further comprising an upper cover body (500) connected to the top of the bottom cover body (100), which covers the lower sealing assembly and the upper sealing assembly.

8. A dosing cap according to claim 7, characterized in that: The bottom cover body (100) is internally provided with an annular mounting groove, and the bottom end of the upper cover body (500) is connected in the annular mounting groove.

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