Push type quantitative double material liquid outlet bottle

Abstract

This invention relates to the field of packaging container technology, specifically to a press-type quantitative dual-material dispensing bottle. It includes an outer bottle, a pump head assembly, and a liquid storage assembly. The pump head assembly includes a shoulder sleeve, a pump core, a lifting seat, a push rod, and a retaining ring; the liquid storage assembly includes a vacuum bottle, a quantitative storage cylinder, and a storage cylinder piston. The shoulder sleeve is fitted onto the outside of the outer bottle opening, the lifting seat is movably connected inside the outer bottle opening, the push rod is axially slidably inserted into the pump head assembly, and the quantitative storage cylinder is located inside the vacuum bottle and is linked to the lower part of the push rod. Upon initial activation, the push rod presses down, pushing the storage cylinder piston to squeeze all the first material in the quantitative storage cylinder into the vacuum bottle, leaving no residue. Simultaneously, the retaining ring engages with the push rod to achieve linkage. During subsequent dispensing, the outer connector presses down, driving the pump core to draw the mixed material from the vacuum bottle and discharge it from the outlet. This invention's dispensing bottle allows for step-by-step control of initial quantitative mixing and subsequent quantitative dispensing, and the liquid storage assembly is replaceable as a whole.

Description

Technical Field

[0001] This invention relates to the field of packaging container technology, specifically to a press-type quantitative dual-dispensing bottle. Background Technology

[0002] Press-type dispensing bottles are widely used in the daily chemical, pharmaceutical, and food industries for storing and quantitatively dispensing liquid materials. As consumers increasingly demand higher product functionality and better user experience, dual-component mixing dispensing bottles have become a hot research topic. These products typically store two different materials separately, and then mix them together before dispensing them by pressing a button, achieving instant mixing, maintaining material activity, or producing specific effects.

[0003] Existing dual-material dispensing bottles typically employ a dual-chamber structure, with each chamber storing a different material. Mixing is usually achieved by placing a small compartment at the bottle opening and allowing the material in the small compartment to drip into the lower bottle body under gravity. However, this gravity-based dripping method has significant drawbacks: First, when the paste in the small compartment is thick, it tends to adhere to the inner wall of the compartment, making it difficult to drip completely by gravity alone. This results in a high residue level in the small compartment, leading to material waste and, more importantly, failing to guarantee that the two materials are mixed in the predetermined ratio, thus affecting the final performance. Second, the storage container and pump head assembly of existing dual-material dispensing bottles are usually a non-removable, integrated structure. Once the internal material is depleted, it cannot be replaced, resulting in waste of packaging materials and hindering environmental protection and resource conservation.

[0004] Therefore, there is an urgent need for a push-button dual-dispensing bottle that can achieve initial quantitative mixing and subsequent step-by-step control of liquid dispensing, and whose liquid storage components are replaceable. Summary of the Invention

[0005] The purpose of this invention is to provide a press-type quantitative dual-material dispensing bottle to solve the problems mentioned in the background art, such as excessive residual material in the small compartment and the inability to replace the substitute.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A press-type quantitative dual-dispensing bottle includes an outer bottle, a pump head assembly disposed on the top of the outer bottle, and a liquid storage assembly housed inside the outer bottle. The pump head assembly includes a shoulder sleeve, a pump core, a lifting seat, a push rod, and a retaining ring. The liquid storage assembly includes a vacuum bottle, a quantitative storage cylinder, and a storage cylinder piston.

[0008] The shoulder sleeve is fitted outside the bottle opening of the outer bottle, the lifting seat is movably connected inside the bottle opening of the outer bottle, and an external connector is slidably connected inside the shoulder sleeve, with a discharge port connected to the external connector.

[0009] The push rod is axially slidably inserted into the pump head assembly, the metering storage cylinder is located inside the vacuum bottle and is linked with the lower part of the push rod, and the storage cylinder piston is slidably disposed inside the metering storage cylinder.

[0010] The retaining ring is equipped with a retaining claw, and the push rod is located inside the retaining ring. The retaining claw is used to hold the push rod.

[0011] Upon initial activation, the push rod presses down to push the storage cylinder piston, squeezing the first material in the metering storage cylinder into the vacuum bottle. At the same time, the claw engages with the push rod to achieve linkage.

[0012] When the liquid is sprayed later, the external connector is pressed down, which drives the push rod to drive the pump core to move. The pump core draws in the mixture in the vacuum bottle and discharges it from the outlet.

[0013] Preferably, the pump head assembly further includes an inner connector, the lower end of which is slidably connected to the interior of the upper end of the lifting seat, and the outer connector is snapped onto the exterior of the inner connector; the upper part of the push rod is snapped onto the interior of the lifting seat.

[0014] Preferably, the lifting seat has an axial through hole at its center, the push rod has a hollow flow channel inside, the top of the push rod has a socket, the bottom of the push rod is connected to a hollow insert, and the bottom opening of the socket communicates with the insert; a pump core that can slide axially is inserted into the socket, and the pump core, socket, retaining ring and lifting seat are arranged coaxially from the inside to the outside, and the top of the pump core communicates with the flow channel of the inner connector.

[0015] Preferably, the lower part of the push rod is provided with a mounting base, and the upper end of the insert is located inside and communicates with the mounting base; the bottle mouth of the quantitative storage cylinder is connected to the inside of the lifting seat by a thread; the liquid storage assembly also includes a sealing cap, which is nested in the lower end of the quantitative storage cylinder; the piston of the storage cylinder is provided with a central through hole, and the insert passes through the central through hole and the opening of the sealing cap, communicating with the inside of the vacuum bottle.

[0016] Preferably, the pump head assembly further includes a spring, and the push rod has a locking ring in the middle. The spring is sleeved on the push rod and axially abuts against the lower end face of the socket and the upper end face of the locking ring. The upper and lower ends of the locking ring are respectively provided with locking claws. Before the first activation, the locking claws abut against the outer side of the socket and the mounting base to provide initial damping. During subsequent liquid spraying, the locking claws are engaged with the upper end face of the socket and the locking ring to link with the push rod.

[0017] Preferably, when the push rod is reset, the retaining ring is reset together with the push rod, and the storage cylinder piston remains at the bottom of the metering storage cylinder.

[0018] Preferably, the upper outer wall of the lifting seat is provided with a radially protruding slide rod, the bottle mouth of the outer bottle is provided with a guide groove, and the inner wall of the shoulder sleeve is provided with a guide groove; the slide rod is slidably connected in the guide groove and can slide into the guide groove; by rotating the shoulder sleeve, the guide groove pushes the slide rod to slide along the guide groove to unlock or lock the connection between the pump head assembly and the outer bottle.

[0019] Preferably, the vacuum bottle mouth and the metering storage cylinder mouth are fixed inside the connecting ring by a threaded connection; after the pump head assembly and the outer bottle are axially restricted by rotating the shoulder sleeve, the liquid storage assembly can be removed from the outer bottle for replacement.

[0020] Preferably, the metering storage cylinder is located inside the vacuum bottle, and the sealing lip of the metering storage cylinder is sealed to the opening of the vacuum bottle through a sealing gasket; a vacuum bottle piston is slidably connected inside the vacuum bottle, and the vacuum bottle piston is configured to slide axially in response to changes in negative pressure inside the vacuum bottle; a base is connected to the bottom end of the vacuum bottle.

[0021] The present invention also provides a quantitative dispensing method using the press-type quantitative dual-material dispensing bottle as described above, comprising the following steps:

[0022] S1. Activate mixing: Press down the push rod to push the piston of the storage cylinder to squeeze the first material in the quantitative storage cylinder into the vacuum bottle, while the claws hold the push rod to achieve linkage.

[0023] S2, Reset: Release the pressure, the push rod resets upward under the action of the spring, and the storage cylinder piston remains at the bottom of the quantitative storage cylinder;

[0024] S3, Press to Discharge: Press down the external connector to drive the push rod and pump core to draw the mixture in the vacuum bottle and discharge it through the outlet.

[0025] S4. Replacement: Rotate the shoulder sleeve to disconnect the linkage between the lifting seat and the outer bottle, remove the hopper assembly, and replace it with a new one.

[0026] Beneficial effects

[0027] By adopting the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0028] 1. Achieve step-by-step control of initial mixing and subsequent liquid dispensing. Through the cooperation of the push rod, storage cylinder piston, and clamping claws, during initial activation, the push rod presses down to squeeze all the first batch of material in the quantitative storage cylinder into the vacuum bottle to achieve mixing, while the clamping claws and push rod engage in linkage. During subsequent use, pressing down the push rod only drives the pump core to draw out the mixed material and dispense liquid, realizing the step-by-step control function of quantitative mixing first and then liquid dispensing, meeting special application requirements such as powder-liquid mixing and activation mixing.

[0029] 2. Precise and controllable quantitative measurement. The volume of the quantitative storage cylinder is predetermined. Upon initial activation, the piston in the storage cylinder squeezes out all the first material in the quantitative storage cylinder, achieving precise measurement of the first material. The liquid output of each subsequent press of the pump core is determined by the pump core stroke, ensuring a stable and consistent liquid output.

[0030] 3. The liquid storage component can be replaced as a whole. By cooperating with the slide rod on the lifting seat and the guide rail groove of the outer bottle and the guide groove of the shoulder sleeve, rotating the shoulder sleeve can release the axial restriction between the pump head assembly and the outer bottle. The liquid storage component can be removed from the outer bottle as a whole for replacement, realizing the reuse of the packaging container, saving resources and being environmentally friendly.

[0031] 4. Compact structure and easy operation. All components are coaxially arranged, and the assembly relationship is clear. Users only need to perform simple pressing and rotating operations to complete activation mixing, liquid dispensing and replacement, resulting in a good user experience. Attached Figure Description

[0032] Figure 1 This is an exploded view of the present invention;

[0033] Figure 2 This is a half-sectional view of the present invention;

[0034] Figure 3 This is a perspective view of the appearance of the present invention;

[0035] Figure 4 This is a schematic diagram of the combination of the outer bottle and the pump head assembly;

[0036] Figure 5 A schematic diagram showing the combination of the bottle body assembly and the pump head assembly;

[0037] Figure 6 This is a schematic diagram of the combination of the quantitative storage cylinder and the pump head assembly;

[0038] Figure 7 This is a schematic diagram of the pump head assembly.

[0039] Figure 8 This is a three-dimensional structural diagram of the push rod;

[0040] Figure 9 This is a half-section view of the push rod;

[0041] Figure 10This is a schematic diagram of the shoulder cover structure;

[0042] Figure 11 This is a schematic diagram of the internal connector.

[0043] Figure 12 This is a schematic diagram of the clasp structure.

[0044] In the diagram: 1-Shoulder sleeve; 101-Guide groove; 2-Outer connector; 3-Discharge port; 4-Inner connector; 401-Flow channel; 5-Pump core; 6-Lifting seat; 601-Slide rod; 7-Push rod; 701-Snap-fit ​​ring; 702-Mounting seat; 703-Insertion post; 704-Socket bowl; 705-Snap-fit ​​claw; 8-Spring; 9-Snap-fit ​​ring; 901-Snap-fit ​​claw; 10-Connecting ring; 11-Quantitative storage cylinder; 12-Storage cylinder piston; 13-Sealing gasket; 14-Sealing cap; 15-Vacuum bottle; 16-Vacuum bottle piston; 17-Base; 18-Outer bottle; 1801-Guide rail groove. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to embodiments:

[0046] Example 1

[0047] like Figures 1 to 12 As shown, a press-type quantitative dual-dispensing bottle includes an outer bottle 18, a pump head assembly disposed on the top of the outer bottle 18, and a liquid storage assembly housed inside the outer bottle 18.

[0048] like Figure 4 As shown, the outer bottle 18 constitutes the outer shell of the entire dispensing bottle, used to house and protect the internal liquid storage components. A guide groove 1801 is provided at the mouth of the outer bottle 18 for engaging with the lifting seat 6 of the pump head assembly.

[0049] like Figure 7 As shown, the pump head assembly includes a shoulder sleeve 1, an outer connector 2, an inner connector 4, a pump core 5, a lifting seat 6, a push rod 7, a spring 8, and a retaining ring 9. The shoulder sleeve 1 is fitted onto the outside of the bottle neck of the outer bottle 18. The lifting seat 6 is movably connected to the inside of the bottle neck of the outer bottle 18. The outer connector 2 is slidably connected to the inside of the shoulder sleeve 1 and has a discharge port 3. The lower end of the inner connector 4 is slidably connected to the upper end of the inside of the lifting seat 6, and the outer connector 2 is snapped onto the outside of the inner connector 4.

[0050] like Figure 5 As shown, the liquid storage assembly includes a vacuum bottle 15, a metering storage cylinder 11, a storage cylinder piston 12, a sealing cap 14, a sealing gasket 13, a vacuum bottle piston 16, and a base 17. The metering storage cylinder 11 is located inside the vacuum bottle 15, and the vacuum bottle 15 is located inside the outer bottle 18.

[0051] like Figure 8 , Figure 9As shown, the push rod 7 has a funnel-shaped structure with a socket 704 at its top. The socket 704 has an opening in the middle of its bottom, and a locking claw 705 is provided around the opening. The middle part of the push rod 7 has a locking ring 701, and the lower part of the push rod 7 has a mounting base 702. The bottom end of the push rod 7 is connected to a hollow insert 703, and the upper end of the insert 703 is located inside the mounting base 702 and communicates with the bottom opening of the socket 704.

[0052] The lifting seat 6 has an axial through hole at its center. The pump core 5 passes through the axial through hole of the lifting seat 6 and can slide axially. The lower end of the pump core 5 is inserted into the socket 704 of the push rod 7, and the top end of the pump core 5 communicates with the flow channel 401 of the inner connector 4. Figure 11 As shown, the upper part of the push rod 7 is engaged inside the lifting seat 6 by the engaging claw 705.

[0053] The pump core 5, the socket cup 704, the retaining ring 9, and the lifting seat 6 are arranged coaxially from the inside out.

[0054] Spring 8 is sleeved on push rod 7 and axially abuts between the lower end face of socket bowl 704 and the upper end face of snap ring 701, and is used to provide a reset driving force for push rod 7 after pressing.

[0055] like Figure 12 As shown, the retaining ring 9 has retaining claws 901 at its upper and lower ends. The push rod 7 is located inside the retaining ring 9. Before initial activation, the retaining claws 901 abut against the outer surfaces of the socket bowl 704 and the mounting base 702, providing initial damping. During activation, the push rod 7 is pressed down, and the retaining claws 901 engage with the upper end face of the socket bowl 704 and the retaining ring 701, respectively. During subsequent liquid spraying, the retaining claws 901 remain engaged with the upper end face of the socket bowl 704 and the retaining ring 701, thereby linking with the push rod 7.

[0056] like Figure 6 As shown, the upper half of the bottle neck of the quantitative storage cylinder 11 is threaded to the inside of the lifting base 6. The bottle neck of the vacuum bottle 15 and the lower half of the bottle neck of the quantitative storage cylinder 11 are threaded to the inside of the connecting ring 10. After the lower part of the lifting base 6, the connecting ring 10, the quantitative storage cylinder 11 and the bottle neck of the vacuum bottle 15 are fixedly connected, the whole assembly is placed inside the outer bottle 18, and the slide rod 601 on the upper part of the lifting base 6 is located in the guide rail groove 1801 on the upper part of the outer bottle 18.

[0057] A sealing gasket 13 is provided below the sealing lip of the bottle mouth of the metering storage cylinder 11. The sealing gasket 13 is sandwiched between the metering storage cylinder 11 and the vacuum bottle 15 to form a seal.

[0058] The sealing cap 14 is nested at the lower end of the metering storage cylinder 11. The storage cylinder piston 12 is slidably disposed inside the metering storage cylinder 11, and the storage cylinder piston 12 has a central through hole. The insert 703 passes through the central through hole of the storage cylinder piston 12 and the opening of the sealing cap 14, communicating with the inside of the vacuum bottle 15. The upper end face of the storage cylinder piston 12 abuts against the lower end face of the mounting base 702 of the push rod 7.

[0059] A vacuum bottle piston 16 is slidably connected inside the vacuum bottle 15. The vacuum bottle piston 16 is configured to slide axially in response to changes in negative pressure within the vacuum bottle 15. A base 17 is connected to the bottom end of the vacuum bottle 15.

[0060] The upper outer wall of the lifting seat 6 is provided with a radially protruding slide rod 601. The bottle mouth of the outer bottle 18 is provided with a guide rail groove 1801, such as... Figure 10 As shown, the inner wall of the shoulder sleeve 1 is provided with a guide groove 101. The slide rod 601 is slidably connected in the guide rail groove 1801 and can slide into the guide groove 101.

[0061] By rotating the shoulder sleeve 1, the slide rod 601 is pushed to slide along the guide groove 101 and the guide rail groove 1801 to unlock or lock the connection between the pump head assembly and the outer bottle 18. After the pump head assembly and the outer bottle 18 are released from axial restriction, the liquid storage assembly, including the connecting ring 10, the metering storage cylinder 11 and the vacuum bottle 15, can be completely removed from the outer bottle 18 for replacement, while the outer bottle 18 and the pump head assembly can be retained.

[0062] The working process of this invention includes the following three stages:

[0063] Phase 1: Activating the Mix

[0064] Upon initial use, the user presses down on the outer connector 2. The pressure is transmitted through the outer connector 2, inner connector 4, and lifting seat 6 to the push rod 7, which in turn moves the mounting seat 702 downwards. The lower end face of the mounting seat 702 abuts against the upper end face of the storage cylinder piston 12, pushing the storage cylinder piston 12 to slide downwards along the insertion post 703. The storage cylinder piston 12 forces all the first material in the metering storage cylinder 11 through the opening of the sealing cap 14 into the vacuum bottle 15, where it contacts the second material in the vacuum bottle 15. Simultaneously, the claw 901 abuts against the outer surface of the socket bowl 704 and the mounting seat 702, providing initial damping. When the push rod 7 is pressed down to its final position, the claw 901 engages with the upper end face of the socket bowl 704 and the retaining ring 701, achieving linkage between the push rod 7 and the retaining ring 9.

[0065] Phase Two: Reset

[0066] After the external connector 2 is released from pressure, the push rod 7 returns to its original position under the elastic force of the spring 8. The insert 703 slides upward along the central through hole of the storage cylinder piston 12, and the mounting seat 702 separates from the storage cylinder piston 12. The storage cylinder piston 12 remains at the bottom of the metering storage cylinder 11 and no longer returns to its original position with the push rod 7. The retaining ring 9 returns to its original position along with the push rod 7, and the retaining claw 901 remains in an engaged state with the push rod 7.

[0067] At this point, the user can shake the bottle to ensure that the first and second materials inside the vacuum bottle 15 are fully mixed.

[0068] Third stage: Press to dispense liquid

[0069] In subsequent use, the user presses down on the outer connector 2 to drive the push rod 7. At this time, since the mounting base 702 has separated from the storage cylinder piston 12, the push rod 7 no longer drives the storage cylinder piston 12, but instead drives the pump core 5. The pump core 5 draws the mixture from the vacuum bottle 15 through the opening of the insert 703 and the sealing cap 14. The mixture flows through the hollow flow channel of the push rod 7 and the flow channel 401 of the inner connector 4, and is finally discharged quantitatively from the outlet 3. The liquid output per press is determined by the stroke of the pump core 5, and the liquid output is stable and consistent.

[0070] After the external connector 2 is released, the push rod 7 is reset under the action of the spring 8, and the pressing and dispensing operation can be repeated.

[0071] Replacement: When the mixture in the vacuum bottle 15 is used up, the user rotates the shoulder sleeve 1, and the guide groove 1801 pushes the slide rod 601 to slide into the guide groove 101, releasing the axial restriction between the pump head assembly and the outer bottle 18. Then, the liquid storage assembly, including the connecting ring 10, the metering storage cylinder 11 and the vacuum bottle 15, is taken out of the outer bottle 18. After replacing the new liquid storage assembly, the shoulder sleeve 1 is rotated in the opposite direction, and the guide groove 101 pushes the slide rod 601 back into the guide groove 1801 to complete the locking and continue use.

[0072] It should be noted that, in the description of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0073] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A press-type quantitative dual-dispensing bottle, comprising an outer bottle (18), a pump head assembly disposed on the top of the outer bottle (18), and a liquid storage assembly housed inside the outer bottle (18), characterized in that, The pump head assembly includes a shoulder sleeve (1), a pump core (5), a lifting seat (6), a push rod (7), and a retaining ring (9); the liquid storage assembly includes a vacuum bottle (15), a metering storage cylinder (11), and a storage cylinder piston (12). The shoulder sleeve (1) is fitted outside the bottle mouth of the outer bottle (18), the lifting seat (6) is movably connected inside the bottle mouth of the outer bottle (18), and an external connector (2) is slidably connected inside the shoulder sleeve (1), and the external connector (2) is connected to a discharge port (3). The push rod (7) is axially slidably inserted into the pump head assembly. The quantitative storage cylinder (11) is located inside the vacuum bottle (15) and is linked to the lower part of the push rod (7). The storage cylinder piston (12) is slidably disposed inside the quantitative storage cylinder (11). The retaining ring (9) is provided with a retaining claw (901), and the push rod (7) is located inside the retaining ring (9). The retaining claw (901) is used to hold the push rod (7). When activated for the first time, the push rod (7) presses down to push the storage cylinder piston (12) to squeeze the first material in the quantitative storage cylinder (11) into the vacuum bottle (15), and at the same time the claw (901) engages with the push rod (7) to achieve linkage.

2. The press-type quantitative dual-material dispensing bottle according to claim 1, characterized in that, The pump head assembly also includes an inner connector (4), the lower end of which is slidably connected to the upper end of the lifting seat (6), and the outer connector (2) is snapped onto the outside of the inner connector (4); the upper part of the push rod (7) is snapped onto the inside of the lifting seat (6).

3. A press-type quantitative dual-material dispensing bottle according to claim 2, characterized in that, The lifting seat (6) has an axial through hole in the center. The push rod (7) has a hollow flow channel inside. The top of the push rod (7) has a socket bowl (704). The bottom of the push rod (7) is connected to a hollow insert (703). The bottom opening of the socket bowl (704) is connected to the insert (703). A pump core (5) that can slide axially is installed inside the socket bowl (704). The pump core (5), push rod (7), retaining ring (9) and lifting seat (6) are arranged coaxially from the inside to the outside. The top of the pump core (5) is connected to the flow channel (401) of the inner connector (4).

4. A press-type quantitative dual-material dispensing bottle according to claim 3, characterized in that, The lower part of the push rod (7) is provided with a mounting base (702), and the upper end of the insert (703) is located inside the mounting base (702) and communicates with it; the upper part of the bottle mouth of the quantitative storage cylinder (11) is connected to the inside of the lifting seat (6) by a thread; the liquid storage assembly also includes a sealing cap (14), which is nested in the lower end of the quantitative storage cylinder (11); the storage cylinder piston (12) is provided with a central through hole, and the insert (703) passes through the central through hole and the opening of the sealing cap (14) and communicates with the inside of the vacuum bottle (15).

5. A press-type quantitative dual-material dispensing bottle according to claim 4, characterized in that, The pump head assembly also includes a spring (8), and a snap ring (701) is provided in the middle of the push rod (7). The spring (8) is sleeved on the push rod (7) and axially abuts against the lower end face of the socket bowl (704) and the upper end face of the snap ring (701). The snap ring (9) is provided with snap claws (901) at its upper and lower ends respectively. Before activation, the snap claws (901) abut against the outer side of the socket bowl (704) and the mounting base (702) to provide initial damping. After activation, the snap claws (901) are engaged with the upper end face of the socket bowl (704) and the snap ring (701) to be linked with the push rod (7).

6. A press-type quantitative dual-material dispensing bottle according to claim 1, characterized in that, When the push rod (7) is reset, the retaining ring (9) is reset together with the push rod (7), and the storage cylinder piston (12) remains at the bottom of the quantitative storage cylinder (11).

7. A press-type quantitative dual-material dispensing bottle according to claim 1, characterized in that, The upper outer wall of the lifting seat (6) is provided with a radially protruding slide rod (601), the bottle mouth of the outer bottle (18) is provided with a guide groove (1801), and the inner wall of the shoulder sleeve (1) is provided with a guide groove (101). The slide rod (601) is slidably connected in the guide groove (1801) and can slide into the guide groove (101). By rotating the shoulder sleeve (1), the slide rod (601) is driven to slide in the guide groove (1801) and the guide groove (101) to unlock or lock the connection between the pump head assembly and the outer bottle (18).

8. A press-type quantitative dual-material dispensing bottle according to claim 1, characterized in that, The mouth of the vacuum bottle (15) and the mouth of the quantitative storage cylinder (11) are fixed inside the connecting ring (10) by threaded connection; after the pump head assembly and the outer bottle (18) are axially restricted by rotating the shoulder sleeve (1), the liquid storage assembly can be taken out from the outer bottle (18) for replacement.

9. A press-type quantitative dual-material dispensing bottle according to claim 1, characterized in that, The quantitative storage cylinder (11) is located inside the vacuum bottle (15). The sealing lip of the bottle mouth of the quantitative storage cylinder (11) forms a seal with the bottle mouth of the vacuum bottle (15) through a sealing gasket (13). A vacuum bottle piston (16) is slidably connected inside the vacuum bottle (15). The vacuum bottle piston (16) is configured to slide axially in response to changes in negative pressure inside the vacuum bottle (15). A base (17) is connected to the bottom end of the vacuum bottle (15).

10. A method for dispensing liquid using a press-type quantitative dual-material dispensing bottle as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Activate mixing: Press down the push rod (7) to push the storage cylinder piston (12) to squeeze the first material in the quantitative storage cylinder (11) into the vacuum bottle (15), while the claw (901) locks the push rod (7) to achieve linkage; S2, Reset: Release the pressure, the push rod (7) resets upward under the action of the spring (8), and the storage cylinder piston (12) remains at the bottom of the quantitative storage cylinder (11); S3, Press to dispense liquid: Press down the external connector (2) to drive the push rod (7) to drive the pump core (5) to operate, and draw the mixed material in the vacuum bottle (15) and discharge it through the outlet (3); S4. Replacement: Rotate the shoulder sleeve (1) to release the linkage between the lifting seat (6) and the outer bottle (18), remove the hopper assembly, and replace it with a new assembly.

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