Quantitative valve structure and aerosol

Abstract

The invention provides a proportional valve structure. The proportional valve structure comprises a valve chamber and a valve rod assembly. The valve chamber is provided with a quantitative cavity, one end of the quantitative cavity is provided with a feeding port allowing materials to enter, the other end of the quantitative cavity is provided with an opening part and a mounting groove used for mounting the sealing piece, and the sealing piece is mounted in the mounting groove and covers the opening part. The valve rod assembly comprises a valve element, an elastic piece and a valve rod piece, and the valve element is elastically installed in the quantitative cavity through the elastic piece so as to axially move to abut against the sealing piece or block the feeding port. One end of the valve rod piece penetrates through the sealing piece and extends into the valve element, the valve rod piece is hollow, and a feeding gap used for feeding is formed between the valve rod piece and the valve element. The valve rod piece is pressed to push the valve element to be separated from the sealing piece, so that a feeding area for materials to enter the valve element is formed between the valve element and the sealing piece, and one end of the valve element blocks the feeding port. Materials in the quantitative cavity pass through the feeding area, then enter the valve rod piece through the feeding gap and are discharged. The invention further provides an aerosol with the proportional valve structure.

Description

Technical Field

[0001] The invention relates to the technical field of aerosol products, and in particular to a metered dose valve structure and an aerosol. Background Art

[0002] Aerosol products refer to products that contain the contents sealed in a container with a volume of no more than 1L and equipped with a valve. When used, the contents are released in a predetermined form under the pressure of the propellant. This type of product is used in a spraying manner, and the sprayed material can be solid, liquid or gaseous, and the spraying shape can be divided into mist, foam, powder, and micelle. The aerosol valve is a closed mechanical device fixed on the aerosol container. Its closed state can ensure that the contents do not leak, and when actuated, it can make the contents spray through the actuator in a predetermined form and speed. In the non-working state, the valve is in a closed state under the pressure of the spring. In the working state, when the actuator is pressed, the valve stem moves downward, causing the flow hole to leave the sealing ring, and the contents are finally sprayed out from the actuator spray hole through the liquid guide tube, flow hole, mixing chamber. When the spring pushes the valve stem back, the valve closes again. In some specific cases, the valve needs to be sprayed quantitatively to avoid insufficient or excessive use.

[0003] The quantitative valve has a valve chamber for quantitative measurement inside the container, one end of the valve stem extends out of the container, and the other end of the valve stem is placed in the container and located in the valve chamber. In the prior art, the valve stem has a material outlet and a material inlet. When not in use, the material outlet and the material inlet are both opened at one end of the valve stem outside the container. When in use, the valve stem is pressed so that the material inlet enters the valve chamber, and the material in the valve chamber is released from the material outlet of the valve stem through the material inlet. After the injection is completed, the valve stem is released, the material inlet is reset to the outside of the container, and the material in the valve chamber will no longer be sprayed out. At this time, the valve chamber is replenished with material. However, the material in the valve stem will be discharged from the outer end of the container through the material inlet, causing leakage, affecting the appearance and user experience.

[0004] Therefore, it is necessary to provide a quantitative valve structure that can release materials quantitatively and prevent leakage after the materials are released. Summary of the invention

[0005] The object of the present invention is to provide a quantitative valve structure which can release materials quantitatively and prevent leakage after the materials are released.

[0006] Another object of the present invention is to provide an aerosol having the above-mentioned metered dose valve structure.

[0007] To achieve the above object, the present invention provides a quantitative valve structure, comprising:

[0008] The valve chamber has a quantitative cavity, one end of which is provided with a feed port for materials to enter, and the other end of which has an opening and is provided with a mounting groove for mounting a sealing member, wherein the sealing member is mounted in the mounting groove and covers the opening;

[0009] The valve stem assembly includes a valve core, an elastic member and a valve stem member, wherein the valve core is elastically installed in the metering cavity by means of the elastic member so as to be able to move axially to abut against the sealing member or block the feed port; one end of the valve stem member passes through the sealing member and extends into the valve core, the valve stem member is hollow and there is a feeding gap for feeding between the valve stem member and the valve core; the valve stem member is pressed to push the valve core out of the sealing member so as to form a feeding area between the valve core and the sealing member for materials to enter the valve core, the feeding area is annularly arranged on the top of the valve core, and one end of the valve core blocks the feed port; the material in the metering cavity passes through the feeding area and then enters the valve stem member through the feeding gap and is discharged.

[0010] After adopting the above technical scheme, the quantitative valve structure of the present invention includes a valve chamber and a valve stem assembly. The valve chamber has a quantitative cavity, one end of the quantitative cavity is provided with a feed port for material to enter, the other end of the quantitative cavity has an opening and is provided with a mounting groove for installing a seal, and the seal is installed in the mounting groove and covers the opening. That is, the feed port is located at one end of the quantitative cavity, and the seal is located at the other end of the quantitative cavity. The valve stem assembly includes a valve core, an elastic member and a valve stem member. The valve core is elastically installed in the quantitative cavity by the elastic member, and can move axially in the quantitative cavity to abut against the seal or block the feed port. When the valve core abuts against the seal, the feed port is open, and the material can enter the quantitative cavity through the feed port. When the valve core leaves the seal, one end of the valve core blocks the feed port, and the material no longer enters the quantitative cavity. The quantitative material in the quantitative cavity enters the valve core through the feed area between the seal and the valve core. On the other hand, one end of the valve stem member passes through the seal and extends into the valve core, and the other end of the valve stem member protrudes out of the seal. The seal can be positioned in the installation groove by cooperating with the installation groove through its own structure, or the seal can be fixed in the installation groove by other components to assist in positioning the valve stem. The valve stem is hollow and has a feeding gap with the valve core for feeding. Specifically, the valve stem is pressed, and the valve stem pushes the valve core out of the seal to form a feeding area between the valve core and the seal for materials to enter the valve core, and one end of the valve core blocks the feed port. The material in the quantitative cavity enters the valve core through the feeding area, and then enters the valve stem through the feeding gap and is discharged. The quantitative valve structure of the present invention is compact and reasonable, can quantitatively measure materials through the quantitative cavity, and the feeding area for feeding into the valve stem assembly is opened and closed by pressing the valve stem. There will be no leakage after the material is released, and the use effect is better.

[0011] Preferably, a plurality of protrusions are circumferentially provided near the feed port of the metering cavity, one end of the elastic member abuts against the valve core, the other end abuts against the inner wall of the metering cavity, and the side surface of the elastic member abuts against the plurality of protrusions.

[0012] Preferably, a stopper cooperating with the elastic member is arranged on the valve core, and one end of the elastic member abuts against the stopper.

[0013] Preferably, the outer wall of the valve core is provided with a plurality of convex parts, the convex parts are fitted in the quantitative cavity, a flow area for material flow is formed between two convex parts, and the flow area can be connected to the feed area.

[0014] Preferably, a guide portion and a sealing portion are provided at one end of the valve core. The guide portion is provided at the end of the valve core and always passes through the feed port. The outer diameter of the guide portion is smaller than the aperture of the feed port. The sealing portion is close to the guide portion, and the sealing portion presents a gradual structure with a cross-sectional area gradually increasing from one end to the other end of the guide portion. The valve stem drives the sealing portion to gradually extend into the feed port until the feed port is blocked.

[0015] Preferably, the valve core is provided with an inner cavity for accommodating the valve stem member, and a plurality of mounting blocks are provided in the inner cavity to protrude along its circumference, and the mounting blocks are provided with patterns matching the valve stem member, one end of the valve stem member is attached to the mounting block, and the feeding gap for the material to pass through is formed between the two mounting blocks.

[0016] Preferably, a top block is provided at one end of the inner cavity, one end of the valve stem abuts against the top block, and the valve stem is pressed to push the top block so that the valve core moves along the quantitative cavity to separate from the sealing member and block the feed port.

[0017] Preferably, the sealing member is provided with a mounting hole for the valve stem member to extend into, and the valve stem member passes through the mounting hole and is interference fit with the mounting hole.

[0018] To achieve the above-mentioned other purpose, the present invention provides an aerosol, including a fixed cover and a container for filling materials, and also including the above-mentioned quantitative valve structure, the quantitative valve structure is installed on the container by means of the fixed cover, the quantitative valve structure and the fixed cover are sealed, and the fixed cover and the container are sealed.

[0019] After adopting the above technical scheme, the aerosol of the present invention comprises a container and a quantitative valve structure, wherein the container is used to contain various materials, and the quantitative valve structure enables the materials in the container to be quantitatively discharged. After using the quantitative valve structure of the present invention, there will be no leakage after the aerosol is quantitatively released, and the use experience is better.

[0020] Preferably, a liquid inlet pipe connected to the feed port is disposed at one end of the valve chamber, and the material in the container is transferred to the quantitative chamber through the liquid inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1 It is a structural diagram of a metering valve provided in one embodiment of the present invention.

[0023] Figure 2 yes Figure 1 sectional view of .

[0024] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0025] Figure 4 yes Figure 2 Cross-sectional view in another state.

[0026] Figure 5 yes Figure 4 Enlarged view of point B in the middle.

[0027] Figure 6 yes Figure 1 Structural breakdown diagram.

[0028] Figure 7 yes Figure 6 Structural diagram of the middle valve chamber.

[0029] Figure 8 yes Figure 6 Structural diagram of the middle valve core.

[0030] Fig. 9 yes Figure 8 sectional view of .

[0031] Fig.10 yes Figure 6 Cross-sectional view of the valve stem.

[0032] Fig.11 1 is a structural diagram of an aerosol provided by one embodiment of the present invention.

[0033] Description of reference numerals:

[0034] 1000, aerosol; 100, metering valve; 10, fixed cover; 11, accommodating cavity; 20, valve chamber; 201, feeding area; 21, metering cavity; 22, feeding port; 23, opening; 24, mounting groove; 25, convex block; 30, valve stem assembly; 31, valve core; 311, top block; 312, inner cavity; 313, mounting block; 3131, texture; 314, convex part; 315, guide part; 316, sealing part; 317, flow interval; 318, feeding gap; 319, stopper; 32, valve stem member; 321, channel; 322, matching part; 33, elastic member; 40, liquid introduction tube; 50, sealing member; 51, mounting hole; 200, container. DETAILED DESCRIPTION

[0035] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the implementation modes and the accompanying drawings.

[0036] See also Figures 1 to 6The present invention provides a quantitative valve structure including a valve chamber 20, a sealing member 50 and a valve stem assembly 30. The valve chamber 20 has a quantitative chamber 21, one end of which is provided with a feed port 22 for material to enter, and the other end of the quantitative chamber 21 is opened to form an opening 23, and a mounting groove 24 for mounting the sealing member 50 is provided at the opening 23, and the sealing member 50 is mounted in the mounting groove 24 and covers the opening 23. In some embodiments, in a specific installation, the sealing member 50 is installed in the mounting groove 24, and one end of the sealing member 50 abuts against the fixed cover 10, so that the fixed cover 10 and the valve chamber 20 are sealed, and at the same time, the fixed cover 10 and the valve stem 32 are sealed. Of course, the sealing member 50 can also cooperate with the specific structure of the mounting groove 24 according to its own structure, so that the sealing member 50 is fixed in the mounting groove 24. The valve stem assembly 30 includes a valve core 31, an elastic member 33 and a valve stem member 32. The valve core 31 is elastically installed in the quantitative chamber 21 by means of the elastic member 33, so that the valve core 31 can move axially in the quantitative chamber 21 to abut against the sealing member 50 or block the feed port 22. When the valve core 31 abuts against the sealing member 50, the feed port 22 is opened, and the quantitative chamber 21 is fed. When the valve core 31 is separated from the sealing member 50 and blocks the feed port 22, an open feed area 201 is formed between the valve core 31 and the sealing member 50, and the material in the quantitative chamber 21 can enter the valve core 31 through the feed area 201. The feed area 201 is arranged around the top of the valve core 31, and the top of the valve core 31 and the sealing member 50 are all around the feed area 201, so that the feeding is faster and more uniform. On the other hand, one end of the valve stem 32 passes through the sealing member 50 and extends into the valve core 31. The valve stem 32 is hollow and there is a feeding gap 318 for feeding between the valve stem 32 and the valve core 31. Specifically, the valve stem 32 is pressed to push the valve core 31 away from the sealing member 50, so as to form a feeding area 201 for materials to enter the valve core 31 between the valve core 31 and the sealing member 50, and one end of the valve core 31 blocks the feed port 22. The material in the quantitative cavity 21 passes through the feeding area 201 and then through the feeding gap 318 into the valve stem 32 and is discharged through the valve stem 32. The valve stem 32 is released, and the elastic member 33 drives the valve core 31 to reset to abut against the sealing member 50, and the feed port 22 is reopened, and the quantitative cavity 21 is fed.

[0037] After adopting the above technical scheme, the quantitative valve structure of the present invention includes a valve chamber 20 and a valve stem assembly 30. The valve chamber 20 has a quantitative cavity 21 for quantitative materials, one end of the quantitative cavity 21 is provided with a feed port 22 for materials to enter, the other end of the quantitative cavity 21 has an opening 23 and is provided with a mounting groove 24 for mounting a seal 50, and the seal 50 is installed in the mounting groove 24 and covers the opening 23. That is, the feed port 22 is located at one end of the quantitative cavity 21, and the seal 50 is located at the other end of the quantitative cavity 21. The valve stem assembly 30 includes a valve core 31, an elastic member 33 and a valve stem member 32. The valve core 31 is elastically installed in the valve chamber 20 by the elastic member 33, and can move axially in the quantitative cavity 21 to abut against the seal 50 or block the feed port 22. When the valve core 31 abuts against the seal 50, the feed port 22 is open, and the material can enter the quantitative cavity 21 through the feed port 22. When the valve core 31 leaves the seal 50, one end of the valve core 31 blocks the feed port 22, and the material no longer enters the quantitative chamber 21. The quantitative material in the quantitative chamber 21 enters the valve core 31 through the feed area 201 between the seal 50 and the valve core 31. On the other hand, one end of the valve stem 32 passes through the seal 50 and extends into the valve core 31, and the other end of the valve stem 32 protrudes out of the seal 50. The seal 50 can be positioned in the installation groove 24 by cooperating with the installation groove 24 through its own structure, or the seal 50 is fixed in the installation groove 24 through other components such as the fixing cover 10, so as to assist in positioning the valve stem 32. The valve stem 32 is hollow and there is a feeding gap 318 for feeding between the valve stem 32 and the valve core 31. Specifically, the valve stem 32 is pressed, and the valve stem 32 pushes the valve core 31 to separate from the sealing member 50, so as to form a feed area 201 for materials to enter the valve core 31 between the valve core 31 and the sealing member 50, and one end of the valve core 31 blocks the feed port 22. The material in the quantitative cavity 21 enters the valve core 31 through the feed area 201, and then enters the valve stem 32 through the feeding gap 318 and is discharged. The quantitative valve structure of the present invention is compact and reasonable, and can quantitatively measure materials through the quantitative cavity 21. The feed area 201 for feeding materials into the valve stem assembly 30 is opened and closed by pressing the valve stem 32. After the material is released, there will be no leakage, and the use effect is better.

[0038] See also Figures 2 to 5In some optional embodiments, the quantitative cavity 21 is provided with a plurality of protrusions 25 protruding along the circumferential direction near the feed port 22. One end of the elastic member 33 abuts against the valve core 31, and the other end abuts against the inner wall of the quantitative cavity 21, and the side of the elastic member 33 abuts against the plurality of protrusions 25. The plurality of protrusions 25 provided in the quantitative cavity 21 can guide and position the elastic member 33, so that the overall connection structure is more stable. Among them, a stopper 319 cooperating with the elastic member 33 is provided on the outer wall of the valve core 31, the elastic member 33 is sleeved on the valve core 31, and one end of the elastic member 33 abuts against the stopper 319, and the other end abuts against the inner wall of the quantitative cavity 21 near the feed port 22 in the quantitative cavity 21. The valve stem 32 pushes the valve core 31 to squeeze the elastic member 33, so that the valve core 31 can extend into the feed port 22 and block the feed port 22. One end of the feed port 22 is connected to a liquid introduction pipe 40 for introducing the material.

[0039] See also Figure 8 In some optional embodiments, the outer wall of the valve core 31 is provided with a plurality of protrusions 314, the protrusions 314 are attached to the quantitative cavity 21, and a flow zone 317 for material flow is formed between the two protrusions 314, and the flow zone 317 can be connected to the feed zone 201. It can be understood that the protrusions 314 can make the cooperation between the valve core 31 and the quantitative cavity 21 stable, and can prevent the valve core 31 from completely attaching to the inner wall of the quantitative cavity 21 and affecting the transmission of the material. When the material is quantitatively released, the material can flow from the flow zone 317 between the two protrusions 314 in the quantitative cavity 21 containing the material to the feed zone 201, and then enter the valve core 31, and then be released to the outside through the valve stem 32.

[0040] See also Figure 8 and Fig. 9In some optional embodiments, a guide portion 315 and a sealing portion 316 are provided at one end of the valve core 31. The guide portion 315 is provided at the end of the valve core 31 and always passes through the feed port 22. The outer diameter of the guide portion 315 is smaller than the aperture of the feed port 22. The guide portion 315 does not affect the material entering the quantitative cavity 21 in the feed port 22. The guide portion 315 is always placed in the feed port 22 and does not separate from the feed port 22, so that the sealing portion 316 can better block the feed port 22. The guide portion 315 is placed in the feed port 22, and a plurality of protrusions 25 are provided in the quantitative cavity 21 to position the elastic member 33, so that the valve core 31 will not deviate when moving axially in the quantitative cavity 21, so that the feed port 22 of the quantitative cavity 21 can be better blocked. When the elastic member 33 is moved and compressed, the sealing portion 316 enters the feed port 22 and gradually blocks the feed port 22, so that the material can be quantitatively released through the quantitative cavity 21. Specifically, the sealing portion 316 is located close to the guide portion 315, and the sealing portion 316 has a gradual structure with a cross-sectional area gradually increasing from one end to the other end of the guide portion 315, and the valve stem 32 drives the sealing portion 316 to gradually extend into the feed port 22 from the small end until the feed port 22 is blocked. The overall structure is reasonably arranged, the feeding and discharging are convenient, and the sealing operation of the feed port 22 of the quantitative chamber 21 is convenient.

[0041] See also Figures 8 to 10In some optional embodiments, the valve core 31 is provided with an inner cavity 312 for accommodating the valve stem 32, and a plurality of mounting blocks 313 are provided in the inner cavity 312 protruding along the circumference thereof. The plurality of mounting blocks 313 are used to support and install the valve stem 32, and the mounting blocks 313 are provided with lines 3131 that cooperate with the valve stem 32, and the outer side of the valve stem 32 is provided with a matching portion 322 that cooperates with the mounting block 313, and the matching portion 322 fits with the mounting block 313, so that one end of the valve stem 32 fits with the mounting block 313, and the overall installation is stable. Among them, a feeding gap 318 for the material to pass through is formed between the two mounting blocks 313. The material in the quantitative cavity 21 enters the inner cavity 312 of the valve core 31 through the flow interval 317 and the feeding area 201 in turn, and then enters the valve stem 32 through the feeding gap 318. Specifically, a passage 321 for material flow is provided through the valve stem 32, and the material enters the valve stem 32 and is released to the outside of the container 200 through the passage 321. It is understandable that the mounting block 313 protrudes out of the inner cavity 312, which can prevent the valve stem 32 from being completely attached to the inner cavity 312 of the valve core 31, thereby affecting the flow of the material. At the same time, the valve stem 32 is attached to the mounting block 313, so that the overall structure is stable and reliable. On the other hand, a top block 311 is provided at one end of the inner cavity 312, and the top block 311 protrudes out of the inner cavity 312 on the side and bottom surface, and one end of the valve stem 32 abuts against the top block 311. When the valve stem 32 is pressed, the valve stem 32 pushes the top block 311, and the top block 311 is forced to drive the valve core 31 to move along the quantitative cavity 21 to disengage from the sealing member 50 and block the feed port 22.

[0042] See also Figures 2 to 6 In some optional embodiments, the sealing member 50 is provided with a mounting hole 51 for the valve stem 32 to extend therein, and the valve stem 32 passes through the mounting hole 51 and is interference fit with the mounting hole 51. It can be understood that the sealing member 50 is fixed between the fixed cover 10 and the valve chamber 20, and the valve stem 32 passes through the sealing member 50 and is fitted with the valve core 31. The sealing member 50 can make the fixed cover 10 and the valve stem 32 sealed, and the sealing member 50 can also reinforce the installation of the valve stem 32 in the valve core 31.

[0043] See also Fig.11The present invention also provides an aerosol 1000, comprising a fixed cover 10 and a container 200 for filling materials, and also comprising a quantitative valve 100, wherein the quantitative valve 100 comprises the above-mentioned quantitative valve structure. The quantitative valve structure is installed on the container 200 by means of the fixed cover 10. The quantitative valve structure and the fixed cover 10 are sealed, and the fixed cover 10 and the container 200 are sealed. Various suitable materials that need to be quantitatively released can be filled in the container 200. Among them, the fixed cover 10 has a receiving cavity 11, which is used to position and install the valve chamber 20, the sealing member 50 and the valve stem assembly 30. One end of the valve chamber 20 is placed in the receiving cavity 11 and the sealing member 50 is arranged between the valve chamber 20 and the fixed cover 10, and the sealing member 50 can make the fixed cover 10 and the valve chamber 20 and the valve stem 32 sealed. On the other hand, one end of the valve chamber 20 is provided with a liquid introduction tube 40 connected to the feed port 22, and the liquid introduction tube 40 is used to transfer the material in the container 200 to the quantitative cavity 21.

[0044] After adopting the above technical solution, the aerosol 1000 of the present invention includes a container 200 and a metering valve 100, wherein the container 200 is used to contain various materials, and the metering valve 100 enables the materials in the container 200 to be quantitatively discharged. After using the metering valve 100 of the present invention, there will be no leakage after the aerosol 1000 is quantitatively released, and the use experience is better.

[0045] like Figures 1 to 11As shown, the aerosol 1000 of the present invention includes a container 200 and a metering valve 100, and the metering valve 100 includes a fixed cover 10, a valve chamber 20 and a valve stem assembly 30. The fixed cover 10 is used to position the valve chamber 20 and the valve stem assembly 30, and can install the valve chamber 20 and the valve stem assembly 30 on the container 200. The fixed cover 10 has a receiving chamber 11, and the valve chamber 20 and the valve stem assembly 30 are installed in the receiving chamber 11. One end of the valve chamber 20 is placed in the receiving chamber 11 and a sealing member 50 is arranged between the valve chamber 20 and the fixed cover 10. The sealing member 50 can make the valve chamber 20 and the fixed cover 10 sealed, and the sealing ring can also make the fixed cover 10 and the valve stem member 32 sealed. At the same time, the sealing member 50 can also cooperate with the valve core 31 to open and close the material from the metering chamber 21 to the feeding area 201 in the valve core 31. The valve chamber 20 has a quantitative cavity 21 for quantitative materials, one end of the quantitative cavity 21 is provided with a feed port 22 for materials to enter, and the other end of the valve chamber 20 is installed with a seal 50. That is, the feed port 22 is located at one end of the quantitative cavity 21, and the seal 50 is located at the other end of the quantitative cavity 21. The valve stem assembly 30 includes a valve core 31, an elastic member 33 and a valve stem member 32. The valve core 31 is elastically mounted in the quantitative cavity 21 through the elastic member 33, and can move axially in the quantitative cavity 21 to abut against the seal 50 or block the feed port 22. When the valve core 31 abuts against the seal 50, the feed port 22 is open, and the material can enter the quantitative cavity 21 through the feed port 22. When the valve core 31 leaves the seal 50, one end of the valve core 31 blocks the feed port 22, and the material no longer enters the quantitative chamber 21. The quantitative material in the quantitative chamber 21 enters the valve core 31 through the feed area 201 between the seal 50 and the valve core 31. On the other hand, one end of the valve stem 32 passes through the seal 50 and extends into the valve core 31, and the other end of the valve stem 32 is located outside the fixed cover 10. The valve stem 32 is hollow and there is a feeding gap 318 for feeding between the valve stem 32 and the valve core 31. Specifically, the valve stem 32 is pressed, and the valve stem 32 pushes the valve core 31 to separate from the seal 50, so as to form a feeding area 201 for the material to enter the valve core 31 between the valve core 31 and the seal 50, and one end of the valve core 31 blocks the feed port 22. The material in the quantitative chamber 21 enters the valve core 31 through the feed area 201, and then enters the valve stem 32 through the feeding gap 318 and is discharged. The aerosol 1000 of the present invention has a metering valve 100 with a compact and reasonable structure. It can measure the material through the metering chamber 21. The feeding area 201 is located in the container 200 and is opened and closed by pressing the valve stem 32. The operation is convenient. After the material is released, there will be no leakage outside the valve stem 32, and the use effect is better.

[0046] The above disclosure is only a preferred embodiment of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A quantitative valve structure, characterized in that: include: The valve chamber has a quantitative cavity, one end of which is provided with a feed port for material to enter, and the other end of which has an opening and is provided with a mounting groove for mounting a seal, wherein the seal is mounted in the mounting groove and covers the opening; A valve stem assembly comprises a valve core, an elastic member and a valve stem member, wherein the valve core is elastically installed in the metering cavity by means of the elastic member so as to be able to move axially to abut against the sealing member or block the feed port; one end of the valve stem member passes through the sealing member and extends into the valve core, the valve stem member is hollow and there is a feeding gap for feeding between the valve stem member and the valve core; the valve stem member is pressed to push the valve core out of the sealing member so as to form a feeding area between the valve core and the sealing member for materials to enter the valve core, the feeding area is annularly arranged on the top of the valve core, and one end of the valve core blocks the feed port; the material in the metering cavity passes through the feeding area and then through the feeding gap into the valve stem member and is discharged.

2. The quantitative valve structure according to claim 1, characterized in that: The quantitative cavity is provided with a plurality of protrusions protruding along the circumferential direction near the feed port, one end of the elastic member abuts against the valve core, the other end abuts against the inner wall of the quantitative cavity, and the side surface of the elastic member abuts against the plurality of protrusions.

3. The quantitative valve structure according to claim 1, characterized in that: The valve core is provided with a stopper matched with the elastic member, and one end of the elastic member abuts against the stopper.

4. The quantitative valve structure according to claim 1, characterized in that: The outer wall of the valve core is provided with a plurality of convex parts, the convex parts are fitted to the quantitative cavity, and a flow area for material flow is formed between two convex parts, and the flow area can be connected to the feed area.

5. The quantitative valve structure according to claim 1, characterized in that: A guide portion and a sealing portion are provided at one end of the valve core, the guide portion is provided at the end of the valve core and always passes through the feed port, the outer diameter of the guide portion is smaller than the aperture of the feed port; the sealing portion is close to the guide portion, and the sealing portion presents a gradual structure with a cross-sectional area gradually increasing from one end to the other end of the guide portion, and the valve stem drives the sealing portion to gradually extend into the feed port until the feed port is blocked.

6. The quantitative valve structure according to claim 1, characterized in that: The valve core is provided with an inner cavity for accommodating the valve stem member, and a plurality of mounting blocks are provided in the inner cavity so as to protrude circumferentially thereof. The mounting blocks are provided with patterns matching the valve stem member, and one end of the valve stem member is attached to the mounting block, and a feeding gap is formed between the two mounting blocks for the material to pass through.

7. The quantitative valve structure according to claim 6, characterized in that: A top block is arranged at one end of the inner cavity, and one end of the valve stem member abuts against the top block. The valve stem member is pressed to push the top block so that the valve core moves along the quantitative cavity to separate from the sealing member and block the feed port.

8. The quantitative valve structure according to claim 1, characterized in that: The sealing member is provided with a mounting hole for the valve stem member to extend into, and the valve stem member passes through the mounting hole and is interference-fitted with the mounting hole.

9. An aerosol, comprising a fixed cover and a container for filling a material, characterized in that: It also includes the quantitative valve structure according to any one of claims 1 to 8, wherein the quantitative valve structure is installed on the container via the fixed cover, the quantitative valve structure and the fixed cover are sealed, and the fixed cover and the container are sealed.

10. The aerosol according to claim 9, characterized in that One end of the valve chamber is provided with a liquid introduction tube connected to the feed port, and the material in the container is transferred to the quantitative cavity through the liquid introduction tube.

Images