A dual compartment dropper packaging bottle

Abstract

The utility model discloses a double -cabin dropper packaging bottle, including A material cabin, B material cabin, inner shoulder cover, outer shoulder cover, inner cover, outer cover, press cap, dropper, scrape material plug, piston rod and spring, A material cabin is by A material cabin body and the bottom cover of A material cabin that is closed in its lower end opening is composed, and A material cabin is used for depositing A material body in, B material cabin sets up in the upper end opening of A material cabin body, and the inner shoulder cover is sleeved in the upper end opening of A material cabin body, and the lateral wall of inner shoulder cover is provided with two transfer rails, and the head end and the terminal of each transfer rail are provided with first stop point and second stop point respectively, the outer shoulder cover includes the shoulder cover inner tube and shoulder cover outer tube of coaxial arrangement. The utility model discloses a double -cabin dropper packaging bottle, and there is another B material cabin in A material cabin, and A material can be mixed with B material when using, and after rotating outer cover, can automatically suck material body, and the mixed use of double material body can satisfy the increasingly increasing diversification skin care demand of consumer.

Description

Technical Field

[0001] This utility model relates to the field of cosmetic packaging bottle technology, specifically to a dual-compartment dropper packaging bottle. Background Technology

[0002] Currently, most existing serum packaging bottles use dropper packaging. The serum is filled into the bottle, and each time it is used, the nozzle must be pressed to draw in the liquid, then the dropper must be pulled out, and the dropper must be pressed again to squeeze out the liquid before use. Each use requires pressing the dropper more than twice. Moreover, most existing dropper packaging bottles are single-liquid structures, which can only hold one type of liquid and cannot meet the increasingly diverse skincare needs of consumers. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a dual-compartment dropper packaging bottle. There is another compartment B inside compartment A. When in use, the A and B materials can be mixed. After rotating the outer cap, the material can be automatically drawn in. The mixing of the two materials during use can meet the increasingly diverse skin care needs of consumers.

[0004] The technical solution to achieve the above objective is: a dual-compartment dropper packaging bottle, comprising a material compartment A, a material compartment B, an inner shoulder sleeve, an outer shoulder sleeve, an inner cap, an outer cap, a push cap, a dropper, a scraper plug, a piston rod, and a spring, wherein:

[0005] The A silo consists of an A silo body and an A silo bottom cover that seals the opening at its lower end. The A silo is used to store the A material.

[0006] The B hopper is located within the upper opening of the A hopper body. The B hopper includes a B hopper body and a B hopper bottom cover. The B hopper body has a double-layer cylindrical structure, including an inner B hopper body, an outer B hopper body, and an annular top plate that seals the upper opening between the two. The space between the inner and outer B hopper bodies is used to store B material. The B hopper bottom cover includes an annular bottom plate, an outer cylinder insert ring, and an inner cylinder retaining ring. The bottom end of the inner cylinder retaining ring is fixed to the inner ring of the annular bottom plate, and the bottom end of the outer cylinder insert ring is fixed to the outer ring of the annular bottom plate. The annular bottom plate of the B hopper bottom cover is located at the lower opening between the inner and outer B hopper bodies, and the outer cylinder insert ring is inserted into the outer B hopper body, while the inner cylinder retaining ring is engaged with the inner B hopper body.

[0007] The inner shoulder sleeve is fitted over the upper opening of the A hopper body. Two rotating rails are provided on the side wall of the inner shoulder sleeve. Each rotating rail has a first stop and a second stop at its head and end, respectively.

[0008] The outer shoulder sleeve includes a shoulder sleeve inner cylinder and a shoulder sleeve outer cylinder arranged coaxially. The middle part of the shoulder sleeve inner cylinder and the top end of the shoulder sleeve outer cylinder are connected by an annular connecting plate. The inner wall of the shoulder sleeve outer cylinder is provided with two shoulder sleeve rotating shafts. The shoulder sleeve outer cylinder is rotatably sleeved on the outside of the inner shoulder sleeve, and the two shoulder sleeve rotating shafts move along two rotating tracks on the inner shoulder sleeve in a one-to-one correspondence. The lower part of the shoulder sleeve inner cylinder is inserted into the inner cylinder of the B hopper, and the bottom end face of the shoulder sleeve inner cylinder is in contact with the top end face of the inner cylinder retaining ring of the bottom cover of the B hopper.

[0009] The inner cover is provided with an inner cover annular plate in the middle, which divides the inner cover into upper and lower parts. The lower part of the inner cover is threaded to the upper part of the inner sleeve of the outer shoulder sleeve. The top of the side wall of the upper part of the inner cover is provided with two arc-shaped guide rail grooves, and the bottom of each arc-shaped guide rail groove is provided with a guide rail stop.

[0010] The inner wall of the outer cover is provided with two vertical guide grooves; the outer wall of the button cap is provided with two guide shafts, and the two guide shafts are distributed on both radial sides of the outer wall of the button cap; the outer cover is rotatably fitted over the inner cover, the upper part of the inner cover is fitted over the button cap, and the outer ends of the two guide shafts pass through the two arc-shaped guide grooves one by one and are inserted into the two vertical guide grooves.

[0011] The bottom end of the dropper passes through the inner sleeve cylinder and the inner sleeve retaining ring in sequence and extends into the A material hopper body; the top end of the dropper is locked inside the inner cover annular plate; the scraper plug is located between the inner sleeve cylinder and the dropper.

[0012] A piston rod slot is provided on the lower surface of the top of the cap; the piston rod is inserted into the dropper, and the top of the piston rod is interference-fitted into the piston rod slot.

[0013] The spring is disposed inside the cap, with its upper end fitted outside the piston rod slot and its lower end abutting against the inner cover annular plate.

[0014] In the aforementioned dual-compartment dropper packaging bottle, the bottom end of the inner wall of the inner shoulder sleeve is provided with two positioning holes, and the outer wall of the upper opening of the A material compartment is provided with two positioning platforms, which are inserted into the two positioning holes one by one.

[0015] In the aforementioned dual-compartment dropper packaging bottle, the outer wall of the inner cylinder retaining ring of the bottom cover of compartment B is provided with a convex ring of the bottom cover of compartment B, and the lower part of the inner wall of the inner cylinder of compartment B is provided with a double buckle composed of an upper convex ring and a lower convex ring. In the initial state, the convex ring of the bottom cover of compartment B is located on the upper convex ring of the double buckle; during mixing, the convex ring of the bottom cover of compartment B is located between the upper convex ring and the lower convex ring of the double buckle.

[0016] In the aforementioned dual-compartment dropper packaging bottle, a B-compartment buckle is provided at the top of the inner wall of the inner cylinder of the B-compartment, and a shoulder sleeve annular boss is provided at the lower part of the outer wall of the inner cylinder of the outer shoulder sleeve, the shoulder sleeve annular boss being located below the B-compartment buckle.

[0017] In the aforementioned dual-compartment dropper packaging bottle, the bottom end of the inner wall of the outer cap is provided with an outer cap protrusion, and the lower part of the outer wall of the inner cap is provided with an inner cap annular groove, wherein the outer cap protrusion is rotatably disposed within the inner cap annular groove.

[0018] In the aforementioned dual-compartment dropper packaging bottle, the top end of the annular connecting plate of the outer shoulder sleeve is provided with at least one shoulder sleeve stop point; the bottom end of the inner wall of the lower part of the inner cap is provided with an inner cap stop tooth that matches the shoulder sleeve stop point.

[0019] In the aforementioned dual-compartment dropper packaging bottle, the bottom end of the piston rod is provided with a sealing lip.

[0020] In the aforementioned dual-compartment dropper bottle, the top of the outer cap has an inwardly folded outer cap flange, and the top of the inner cap contacts the lower surface of the outer cap flange.

[0021] In the aforementioned dual-compartment dropper packaging bottle, the outer edge of the annular top plate of compartment B overlaps with the top of the upper opening of compartment A.

[0022] This utility model's dual-compartment dropper packaging bottle has a B compartment inside the A compartment, allowing the A and B materials to be mixed during use. Furthermore, rotating the outer cap allows for automatic material extraction. The mixing of the two materials during use can meet the increasingly diverse skincare needs of consumers. Attached Figure Description

[0023] Figure 1 This is an external structural diagram of the dual-compartment dropper packaging bottle of this utility model (before mixing);

[0024] Figure 2 This is a cross-sectional view of the dual-compartment dropper packaging bottle of this utility model (before mixing);

[0025] Figure 3 This is an external structural diagram of the dual-compartment dropper packaging bottle of this utility model (after mixing).

[0026] Figure 4 This is a cross-sectional view (after mixing) of the dual-compartment dropper packaging bottle of this utility model;

[0027] Figure 5 This is a 3D structural diagram of silo A;

[0028] Figure 6 This is a top view of silo A;

[0029] Figure 7 This is a three-dimensional structural diagram of silo B;

[0030] Figure 8 This is a sectional view of silo B;

[0031] Figure 9 This is a three-dimensional structural diagram of the bottom cover of silo B;

[0032] Figure 10 Cross-sectional view of the bottom cover of silo B

[0033] Figure 11 This is a three-dimensional structural diagram of the inner shoulder sleeve;

[0034] Figure 12 This is a sectional view of the inner shoulder sleeve;

[0035] Figure 13 This is a bottom view of the inner shoulder cover;

[0036] Figure 14 This is a three-dimensional structural diagram of the outer shoulder cover;

[0037] Figure 15 This is a sectional view of the outer shoulder cover;

[0038] Figure 16 This is a bottom view of the outer shoulder cover;

[0039] Figure 17 This is a three-dimensional structural diagram of the outer cover;

[0040] Figure 18 This is a sectional view of the outer cover;

[0041] Figure 19 This is a schematic diagram of the cap structure;

[0042] Figure 20 This is a sectional view of the cap.

[0043] Figure 21 This is a three-dimensional structural diagram of the inner cover;

[0044] Figure 22 This is a cross-sectional view of the inner cover;

[0045] Figure 23 This is a bottom view of the inner cover;

[0046] Figure 24 This is a schematic diagram of the piston rod. Detailed Implementation

[0047] To enable those skilled in the art to better understand the technical solution of this utility model, its specific embodiments are described in detail below with reference to the accompanying drawings:

[0048] Please see Figures 1 to 24 The preferred embodiment of this utility model is a dual-compartment dropper packaging bottle, comprising a material compartment A 100, a material compartment B 200, an inner shoulder sleeve 9, an outer shoulder sleeve 7, an inner cap 3, an outer cap 1, a push cap 2, a dropper 5, a scraper plug 8, a piston rod 4, and a spring 6.

[0049] Please see again Figure 5 and Figure 6 The A material hopper 100 consists of an A material hopper body 12 and an A material hopper bottom cover 13 that seals the opening at its lower end. The A material hopper 12 is used to store A material.

[0050] Please see again Figures 7 to 10 The B silo includes a B silo body 10 and a B silo bottom cover 11. The B silo body 10 has a double-layer cylindrical structure, including an inner B silo body 103, an outer B silo body 104, and an annular top plate 105 sealing the upper opening between the two. The space between the inner B silo body 103 and the outer B silo body 104 is used to store B material. The B silo bottom cover 11 includes an annular bottom plate 113, an outer cylinder insert ring 114, and an inner cylinder retaining ring 115. The bottom end of the inner cylinder retaining ring 115 is fixed to the inner ring of the annular bottom plate 113, and the bottom end of the outer cylinder insert ring 114 is fixed to the outer ring of the annular bottom plate 113. The annular bottom plate 113... A lower opening is provided between the inner cylinder 103 and the outer cylinder 104 of the B hopper, with the outer cylinder insert ring 114 inserted into the outer cylinder 104 and the inner cylinder retaining ring 115 engaged within the inner cylinder 103 of the B hopper. Specifically, the outer wall of the inner cylinder retaining ring 115 of the B hopper bottom cover 11 is provided with a hopper bottom cover protruding ring 111, and the lower part of the inner wall of the B hopper inner cylinder 103 is provided with a double buckle 102 composed of an upper protruding ring and a lower protruding ring. Initially, the hopper bottom cover protruding ring 111 is located on the upper protruding ring of the double buckle 102; during mixing, the hopper bottom cover protruding ring 111 is located between the upper and lower protruding rings of the double buckle 102. The B hopper 200 is located within the upper opening of the A hopper body 12, and the outer edge of the B hopper annular top plate 105 overlaps the top of the upper opening of the A hopper body 12.

[0051] Please see Figure 11 , Figure 12 and Figure 13 The inner shoulder sleeve 9 is fitted onto the upper opening of the A-type hopper body 12. Specifically, the bottom of the inner wall of the inner shoulder sleeve 9 is provided with two positioning holes 92, and the outer wall of the upper opening of the A-type hopper body 12 is provided with two positioning platforms 121, which are inserted into the two positioning holes 92 in a one-to-one correspondence. Two rotating rails 91 are provided on the side wall of the inner shoulder sleeve 9, and each rotating rail 91 has a first stop 93 and a second stop 94 at its head and end, respectively. The top of the side wall of the inner shoulder sleeve 9 has two notches 95, which are connected to the head ends of the two rotating rails 91 in a one-to-one correspondence.

[0052] Please see again Figure 14 , Figure 15 and Figure 16 The outer shoulder sleeve 7 includes a shoulder sleeve inner cylinder 75 and a shoulder sleeve outer cylinder 76 arranged coaxially. The middle part of the shoulder sleeve inner cylinder 75 and the top end of the shoulder sleeve outer cylinder 76 are connected by an annular connecting plate 77. The inner wall of the shoulder sleeve outer cylinder 75 is provided with two shoulder sleeve rotating shafts 71. The shoulder sleeve outer cylinder 76 is rotatably sleeved on the outside of the inner shoulder sleeve 9, and the two shoulder sleeve rotating shafts 71 move along the two rotating rails 91 on the inner shoulder sleeve 9 in a one-to-one correspondence. Specifically, during assembly, each shoulder sleeve rotating shaft 71 passes through the corresponding notch 95 and is inserted into the rotating rail 91. When the outer shoulder sleeve rotates, the shoulder sleeve rotating shaft 71 moves along the corresponding rotating rail 91. The lower part of the shoulder sleeve inner cylinder 75 is inserted into the inner cylinder body 103 of the B hopper, and the bottom end face 74 of the shoulder sleeve inner cylinder 75 is in contact with the top end face 112 of the inner cylinder retaining ring of the bottom cover 11 of the B hopper. The top of the inner wall of the inner cylinder 103 of the B hopper is provided with a B hopper buckle 101, and the lower part of the outer wall of the inner cylinder 76 of the outer shoulder sleeve is provided with a shoulder sleeve annular boss 72. The shoulder sleeve annular boss 72 is located below the B hopper buckle 101. The two work together to prevent the outer shoulder sleeve 7 from falling off the inner cylinder 103 of the B hopper.

[0053] Please see again Figure 17 , Figure 18 , Figure 19 and Figure 20 The inner wall of the outer cover 1 is provided with two vertical guide grooves 301; the outer wall of the cap 2 is provided with two guide shafts 21, and the two guide shafts 21 are distributed on both radial sides of the outer wall of the cap 2; the lower surface of the top of the cap 2 is provided with a piston rod slot 22.

[0054] Please see again Figure 21 , Figure 22 and Figure 23 The inner cover 3 has an inner cover annular plate 35 in the middle, which divides the inner cover 3 into upper and lower parts. The lower part of the inner cover 3 is threaded to the upper part of the shoulder sleeve inner cylinder 75 of the outer shoulder sleeve 7. Specifically, the inner wall of the lower part of the inner cover 3 has an internal thread 36, and the upper part of the shoulder sleeve inner cylinder 75 of the outer shoulder sleeve 7 has an external thread 78. The internal thread 36 of the inner cover 3 is threaded to the external thread 78 of the outer shoulder sleeve 7. The top of the side wall of the upper part of the inner cover 3 has two arc-shaped guide rail grooves 31 with downward openings. Each arc-shaped guide rail groove 31 has a guide rail stop 34 at the bottom end.

[0055] The outer cover 1 is rotatably fitted over the inner cover 3. Specifically, the bottom end of the inner wall of the outer cover 1 is provided with an outer cover protrusion 302, and the lower part of the outer wall of the inner cover 3 is provided with an inner cover annular groove 32. The outer cover protrusion 302 is rotatably disposed within the inner cover annular groove 32. The outer cover protrusion 302 and the inner cover annular groove 32 form a rotating groove combination. The top end of the outer cover 1 has an inwardly folded outer cover flange 303, and the top end of the inner cover 3 contacts the lower surface of the outer cover flange 303.

[0056] The top of the annular connecting plate 77 of the outer shoulder sleeve 7 is provided with at least one shoulder sleeve stop point 73; the bottom of the inner wall of the lower part of the inner cover 3 is provided with an inner cover stop tooth 33 that is adapted to the shoulder sleeve stop point 73, and the shoulder sleeve stop point 73 and the inner cover stop tooth 33 are engaged.

[0057] The upper part of the inner cover 3 is fitted over the button 2, and the outer ends of the two guide shafts 21 pass through the two arc-shaped guide grooves 31 and are inserted into the two vertical guide grooves 301. When the outer cover 1 rotates, the inner cover does not rotate due to the cooperation of the positioning platform 121 and the positioning hole 92. The guide shafts 21 move up and down in the arc-shaped guide grooves 31 and the guide grooves 301 to realize the up and down pressing of the button.

[0058] The bottom end of the dropper 5 passes through the inner cylinder 75 of the outer shoulder sleeve and the inner cylinder retaining ring 115 of the bottom cover of the B hopper and extends into the A hopper body 12; the top end of the dropper 5 is stuck in the inner cover annular plate 35; the scraper plug 8 is located between the inner cylinder 75 of the shoulder sleeve and the dropper 5.

[0059] Please see again Figure 2 or Figure 4 The piston rod 4 is inserted into the dropper 5, and the top end of the piston rod 4 is inserted into the piston rod slot 22 of the cap 2 with an interference fit. The spring 6 is set inside the cap 2, and the upper end of the spring 6 is sleeved on the outside of the piston rod slot 22, while the lower end abuts against the inner cover annular plate 35.

[0060] Please see again Figure 24 The bottom end of the piston rod 4 is provided with a sealing lip 41, which is interference-fitted with the inner wall of the dropper 5. When the cap 2 moves up and down, it drives the piston rod 4 to move up and down inside the dropper 5.

[0061] When mixing materials, the double-compartment dropper packaging bottle of this utility model is used as follows: by rotating the outer shoulder sleeve 7, the shoulder sleeve pivot 71 of the outer shoulder sleeve 7 rotates and moves downward within the rotating track 91 through the first stop 93 of the inner shoulder sleeve 9, and then reaches the termination position through the second stop 94; since the inner shoulder sleeve 7 has a positioning hole 92, it is inserted into the positioning platform 121 of the A material compartment 12. When the outer shoulder sleeve 7 rotates, due to the positioning effect of the positioning hole 92 and the positioning platform 121, the inner shoulder sleeve 9 is in a stationary state and will not rotate with the outer shoulder sleeve 7. As the outer shoulder sleeve 7 rotates downwards, the bottom end face 74 of its inner cylinder 75 pushes against the top end face 112 of the inner cylinder retaining ring of the B hopper bottom cover 11 and moves downwards. The bottom cover protrusion 111 of the B hopper bottom cover 11 disengages from the upper protrusion ring of the double buckle 102 of the B hopper body 10. The bottom cover protrusion 111 moves between the upper and lower protrusion rings of the double buckle 102. Due to the restraining effect of the lower protrusion ring of the double buckle 102, the B hopper bottom cover 11 is not completely separated from the B hopper body 10. At the same time, the material in the B hopper 200 flows into the A hopper body 12 from the gap after the separation of the B hopper body 10 and the B hopper bottom cover 11, and the A material mixes with the B material. This is the mixing process. During the mixing process, the outer shoulder sleeve 7 rotates downwards, and finally the bottom end of the outer shoulder sleeve 7 contacts the shoulder of the A hopper body 12.

[0062] When the material needs to be sucked up after mixing: rotate the outer cover 1. Since there is an outer cover protrusion 302 inside the outer cover 1, the outer cover protrusion 302 is inserted into the inner cover annular groove 32 of the inner cover 3, forming a rotating groove assembly; the guide shaft 21 of the cap 2 is inserted into the arc-shaped guide groove 31 of the inner cover 3, and is restricted by the guide stop 34 of the inner cover 3, and is then oriented into the vertical guide groove 301 of the outer cover 1 through the arc-shaped guide groove 31. The outer cover 1 drives the inner cover 3 to rotate accordingly. Since the shoulder stop 73 of the outer shoulder sleeve 7 engages with the inner cover stop tooth 33 of the inner cover 3, the over-stopping force is greater than the sliding friction between the guide shaft 21 of the cap 2 and the arc-shaped guide groove 31 of the inner cover 3. Moreover, the outer end of the guide shaft 21 of the cap 2 is in the vertical guide groove 301 of the outer cover 1. The rotation of the outer cover 1 drives the cap 2 to cross the guide stop 34 and slide upward in the arc-shaped guide groove 31 of the inner cover 3. When the cap 2 moves upward, it drives the piston rod 4, which is in interference fit with it, to move upward synchronously. As the sealing lip 41 moves upward, the air in the dropper 5 is drawn away, forming a slight negative pressure state. At this time, the mixed material is compressed due to the negative pressure. The material is inserted into the dropper 5, which is an automatic feeding process. Rotation continues until the guide shaft 21 of the cap 2 contacts the lower surface of the outer cover flange 303 (also called the inner top surface of the outer cover), preventing further upward movement; once the position is limited, rotation continues. Because the position of the cap 2 is limited, the outer cover 1, cap 2, and inner cover 3 form a temporary cover assembly. The shoulder stop 73 of the outer shoulder sleeve 7 crosses the inner cover stop tooth 33 of the inner cover 3, and the internal thread 36 of the inner cover 3 rotates and separates from the external thread 78 of the outer shoulder sleeve 7. The cover assembly formed by the outer cover 1, cap 2, and inner cover 3 is then removed. Then, simply press the cap 2 gently, and the piston rod 7 will push the material out of the dropper for the consumer to use. After the material is pushed out, the spring 6 inside the inner cover 2 prevents the cap 2 from retracting, resulting in a more aesthetically pleasing appearance.

[0063] After use, when returning the cover assembly to its original position, first tighten the internal thread 36 of the inner cover 2 and the external thread 78 of the outer shoulder sleeve 7. At this time, the shoulder sleeve stop 73 of the outer shoulder sleeve 7 is still outside the inner cover stop tooth 33 of the inner cover 3. Continue to rotate the outer cover 1. The vertical guide groove 301 of the outer cover 1 drives the guide shaft 21 of the button 2 to rotate downward along the arc guide groove 31 of the inner cover 3 and cross the guide stop 34 of the inner cover 3, entering the limit state. At the same time, the piston rod 7 is also driven to move downward. Continue to rotate the outer cover. Since the button 2 has been limited, the outer cover 1, the button 2, and the inner cover 3 are in a temporary cover assembly. The shoulder sleeve stop 73 of the outer shoulder sleeve 7 crosses into the inner cover stop tooth 33 of the inner cover 3. This is the closing process.

[0064] In summary, the dual-compartment dropper bottle of this utility model has a B compartment inside the A compartment, which allows the A and B materials to be mixed during use. Furthermore, the material can be automatically drawn in by rotating the outer cap. The mixing of the two materials during use can meet the increasingly diverse skincare needs of consumers.

[0065] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A dual-compartment dropper packaging bottle, characterized in that, Includes hopper A, hopper B, inner shoulder sleeve, outer shoulder sleeve, inner cover, outer cover, push cap, dropper, scraper plug, piston rod, and spring, wherein: The A silo consists of an A silo body and an A silo bottom cover that seals the opening at its lower end. The A silo is used to store the A material. The B hopper is located within the upper opening of the A hopper body. The B hopper includes a B hopper body and a B hopper bottom cover. The B hopper body has a double-layer cylindrical structure, including an inner B hopper body, an outer B hopper body, and an annular top plate that seals the upper opening between the two. The space between the inner and outer B hopper bodies is used to store B material. The B hopper bottom cover includes an annular bottom plate, an outer cylinder insert ring, and an inner cylinder retaining ring. The bottom end of the inner cylinder retaining ring is fixed to the inner ring of the annular bottom plate, and the bottom end of the outer cylinder insert ring is fixed to the outer ring of the annular bottom plate. The annular bottom plate of the B hopper bottom cover is located at the lower opening between the inner and outer B hopper bodies, and the outer cylinder insert ring is inserted into the outer B hopper body, while the inner cylinder retaining ring is engaged with the inner B hopper body. The inner shoulder sleeve is fitted over the upper opening of the A hopper body. Two rotating rails are provided on the side wall of the inner shoulder sleeve. Each rotating rail has a first stop and a second stop at its head and end, respectively. The outer shoulder sleeve includes a shoulder sleeve inner cylinder and a shoulder sleeve outer cylinder arranged coaxially. The middle part of the shoulder sleeve inner cylinder and the top end of the shoulder sleeve outer cylinder are connected by an annular connecting plate. The inner wall of the shoulder sleeve outer cylinder is provided with two shoulder sleeve rotating shafts. The shoulder sleeve outer cylinder is rotatably sleeved on the outside of the inner shoulder sleeve, and the two shoulder sleeve rotating shafts move along two rotating tracks on the inner shoulder sleeve in a one-to-one correspondence. The lower part of the shoulder sleeve inner cylinder is inserted into the inner cylinder of the B hopper, and the bottom end face of the shoulder sleeve inner cylinder is in contact with the top end face of the inner cylinder retaining ring of the bottom cover of the B hopper. The inner cover is provided with an inner cover annular plate in the middle, which divides the inner cover into upper and lower parts. The lower part of the inner cover is threaded to the upper part of the inner sleeve of the outer shoulder sleeve. The top of the side wall of the upper part of the inner cover is provided with two arc-shaped guide rail grooves, and the bottom of each arc-shaped guide rail groove is provided with a guide rail stop. The inner wall of the outer cover is provided with two vertical guide grooves; the outer wall of the button cap is provided with two guide shafts, and the two guide shafts are distributed on both radial sides of the outer wall of the button cap; the outer cover is rotatably fitted over the inner cover, the upper part of the inner cover is fitted over the button cap, and the outer ends of the two guide shafts pass through the two arc-shaped guide grooves one by one and are inserted into the two vertical guide grooves. The bottom end of the dropper passes through the inner sleeve cylinder and the inner sleeve retaining ring in sequence and extends into the A material hopper body; the top end of the dropper is locked inside the inner cover annular plate; the scraper plug is located between the inner sleeve cylinder and the dropper. A piston rod slot is provided on the lower surface of the top of the cap; the piston rod is inserted into the dropper, and the top of the piston rod is interference-fitted into the piston rod slot. The spring is disposed inside the cap, with its upper end fitted outside the piston rod slot and its lower end abutting against the inner cover annular plate.

2. The dual-compartment dropper packaging bottle according to claim 1, characterized in that, The inner wall of the inner shoulder sleeve has two positioning holes at its bottom end, and the outer wall of the upper opening of the A material hopper has two positioning platforms, which are inserted into the two positioning holes one by one.

3. The dual-compartment dropper packaging bottle according to claim 1, characterized in that, The outer wall of the inner cylinder retaining ring of the bottom cover of the B hopper is provided with a circumferential convex ring. The lower part of the inner wall of the inner cylinder of the B hopper is provided with a double buckle composed of an upper convex ring and a lower convex ring. In the initial state, the convex ring of the bottom cover of the hopper is located on the upper convex ring of the double buckle; during mixing, the convex ring of the bottom cover of the hopper is located between the upper convex ring and the lower convex ring of the double buckle.

4. A dual-compartment dropper packaging bottle according to claim 1, characterized in that, The top of the inner wall of the inner cylinder of the B hopper is provided with a B hopper buckle, and the lower part of the outer wall of the inner cylinder of the outer shoulder sleeve is provided with a shoulder sleeve annular boss, which is located below the B hopper buckle.

5. A dual-compartment dropper packaging bottle according to claim 1, characterized in that, The bottom end of the inner wall of the outer cover is provided with an outer cover protrusion, and the lower part of the outer wall of the inner cover is provided with an inner cover annular groove. The outer cover protrusion is rotatably disposed in the inner cover annular groove.

6. A dual-compartment dropper packaging bottle according to claim 1, characterized in that, The top of the annular connecting plate of the outer shoulder sleeve is provided with at least one shoulder sleeve stop point; the bottom of the inner wall of the lower part of the inner cover is provided with an inner cover stop tooth that matches the shoulder sleeve stop point.

7. A dual-compartment dropper packaging bottle according to claim 1, characterized in that, The piston rod has a sealing lip at its bottom end.

8. A dual-compartment dropper packaging bottle according to claim 1, characterized in that, The top of the outer cover has an inwardly folded outer cover flange, and the top of the inner cover is in contact with the lower surface of the outer cover flange.

9. A dual-compartment dropper packaging bottle according to claim 1, characterized in that, The outer edge of the annular top plate of silo B overlaps the top of the opening at the upper end of silo A.

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