Freeze-drying bottle cap assembly

Abstract

The utility model discloses a freeze-drying bottle cap assembly which comprises a freeze-drying bottle and a bottle cap, and a convex part is arranged on the outer surface of a bottle body of the freeze-drying bottle; an upper groove and a lower groove are formed in the inner wall of the bottle cap and are the first groove and the second groove respectively, and the second groove is used for being connected with the protruding part in a clamped mode to achieve a half-plug-pressing state. The first groove is used for being connected with the protruding part in a clamped mode, and the full-pressing plug state is achieved. The freeze-drying bottle cap assembly can reliably achieve the half plug pressing state.

Description

Technical Field

[0001] The utility model relates to a bottle cap assembly, in particular to a freeze-drying bottle cap assembly. Background Art

[0002] The freeze-drying process generally includes the steps of filling, freezing, drying and sublimation, and sealed storage. To ensure that water vapor can escape smoothly after sublimation, the freeze-dried bottle should be in a semi-corrugated state during drying and sublimation.

[0003] CN1119412A relates to a freeze-drying bottle cap assembly which can achieve half-plugging and full-plugging states. However, in the half-plugging state, the bottle cap is covered on the freeze-drying bottle only by its own gravity. When moving along the transport track, the bottle cap will be obviously skewed relative to the freeze-drying bottle, and even fall off the freeze-drying bottle. The skewed state will affect the water vapor sublimation path, thereby affecting the freeze-drying efficiency. The falling of the bottle cap will directly affect the yield rate. Utility Model Content

[0004] Purpose of the utility model: The purpose of the utility model is to provide a freeze-drying bottle cap assembly that can reliably achieve a semi-plug state.

[0005] Technical solution: The freeze-drying bottle cap assembly described in the utility model includes a freeze-drying bottle and a bottle cap, wherein the outer surface of the bottle body of the freeze-drying bottle is provided with a convex portion; two upper and lower grooves are provided on the inner wall of the bottle cap, namely a first groove and a second groove, wherein the second groove is used to engage with the convex portion to achieve a semi-plugged state; and the first groove is used to engage with the convex portion to achieve a fully plugged state.

[0006] The second groove and the convex part are engaged with each other, so that the position of the bottle cap relative to the bottle body is fixed, reducing the risk of the bottle cap tilting or falling off in the semi-pressed state. The first groove and the convex part are engaged with each other, which can limit the displacement of the bottle cap relative to the bottle body, and improve the sealing reliability of the freeze-dried bottle in the full-pressed state.

[0007] The convex part surrounds the bottle body in a full circle, and the first groove and the second groove are also correspondingly set to be a full circle. The convex part and the groove are both set to be a full circle, so that when the bottle cap is installed on the freeze-dried bottle, it is not necessary to match the relative position in the circumferential direction, which simplifies the plugging process. At the same time, the full circle of concave and convex matching formed in the circumferential direction can improve the stability of the clamping between the bottle cap and the bottle body.

[0008] The mouth of the freeze-drying bottle protrudes radially outward relative to the bottleneck to form a boss; a through hole is opened on the side wall of the bottle cap, and a limiting portion is arranged adjacent to the through hole below the through hole. The limiting portion protrudes from the inner wall of the bottle cap, and the limiting portion can limit the boss.

[0009] In the semi-pressed plug state, the top of the bottle mouth of the freeze-dried bottle should not exceed the lower edge of the through hole, otherwise it will block the escape path of water vapor sublimation and affect the freeze-drying efficiency; by setting the limiting part, the bottle cap can only move downward to the position where the upper edge of the boss and the limiting part abut against each other when it is installed on the freeze-dried bottle, thereby ensuring the smooth sublimation path of water vapor. When the full press plug state is to be achieved, since the limiting part is made of elastic material, the limiting part can be deformed under the action of the press plug force, so that the bottle cap can continue to move downward relative to the freeze-dried bottle until the top of the bottle cap abuts against the bottle mouth. At this time, the limiting part is completely located below the boss and limits the freeze-dried bottle from moving downward relative to the bottle cap, thereby reducing the risk of sealing failure of the freeze-dried bottle cap assembly. In addition, the boss of the bottle mouth increases the wall thickness of the bottle mouth, thereby increasing the strength at the bottle mouth and reducing the risk of bottle breakage during the press plugging process.

[0010] In order to ensure the reliability and stability of the limit, and to enable the bottle mouth to break through the limit part and be sealed under the action of the plugging force, two limit parts are symmetrically arranged along the radial direction.

[0011] In order to reduce the resistance of the transition from the semi-plugging state to the full-plugging state and reduce the possibility of the bottle being broken due to excessive plugging force, the thickness of the limiting portion gradually decreases along the radial direction pointing to the center of the circle.

[0012] There are multiple through holes, and the multiple through holes are evenly distributed in the circumferential direction. The evenly distributed multiple through holes are connected to the inside of the freeze-drying bottle in a semi-plugged state, so that multiple evenly distributed water vapor sublimation paths can be formed during the drying and sublimation process, thereby improving the freeze-drying efficiency.

[0013] Since the freeze-dried bottle is a glass bottle and is not easily deformed, the deformation mainly occurs on the bottle cap during the clamping of the first groove and the second groove with the convex part. The wall thickness of the bottle cap tail section is thinned, and the first groove and the second groove are arranged on the tail section, which not only reduces the difficulty of clamping the freeze-dried bottle and the bottle cap, reduces the possibility of breaking the bottle due to excessive plugging force, but also improves the controllability of plugging, which is conducive to controlling the relative position of the freeze-dried bottle and the bottle cap.

[0014] Beneficial effects: Compared with the prior art, the utility model has the following advantages: 1. It improves the stability of the cooperation between the freeze-drying bottle and the bottle cap in the semi-pressed plug state; 2. It improves the sealing reliability in the full-pressed plug state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the freeze-drying bottle of the utility model;

[0016] Figure 2This is a schematic diagram of the bottle cap of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the utility model in a semi-pressed plug state;

[0018] Figure 4 It is a structural schematic diagram of the utility model in a fully pressed plug state. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below in conjunction with the accompanying drawings.

[0020] like Figure 1 and Figure 2 As shown, the freeze-dried bottle cap assembly of the utility model comprises a freeze-dried bottle 1 and a bottle cap 2. The freeze-dried bottle 1 comprises a bottle mouth, a bottle neck and a bottle body; the outer surface of the bottle body of the freeze-dried bottle 1 is surrounded by a full circle of convex parts 11; the bottle mouth protrudes outwardly in the radial direction relative to the bottle neck, and forms a boss 12. The bottle cap 2 comprises a top and a side wall, and the side wall is sequentially provided with a through hole 21, a first groove 22 and a second groove 23 from top to bottom, the first groove 22 and the second groove 23 are arranged on the inner surface of the side wall at intervals, and are arranged in a full circle corresponding to the convex part 11, the two through holes 21 are arranged symmetrically in the radial direction, and the inner surface of the side wall of the bottle cap 2 is also symmetrically provided with two protruding limiting parts 24 in the radial direction, the limiting parts 24 are adjacent to the through holes 21, and are located below the through holes 21, the limiting parts 24 are elastic and extend in the circumferential direction, and the thickness of the limiting parts 24 gradually decreases along the radial direction pointing to the center of the circle, and the limiting parts 24 can limit the boss 12. The side wall of the bottle cap 2 includes a first section for accommodating the bottle mouth, a middle section for ensuring the overall shape of the bottle cap 2, and a tail section with a thinner wall thickness than the middle section. The inner diameter of the first section matches the outer diameter of the bottle mouth, and the inner diameters of the middle section and the tail section match the outer diameter of the bottle body. The through hole 21 is provided in the first section, and the first groove 22 and the second groove 23 are provided in the tail section.

[0021] like Figures 1 to 4 As shown, before the freeze-drying is dried, the bottle cap 2 is pressed down until the second groove 23 and the convex part 11 are clamped, the upper edge of the boss 12 and the limit part 24 are abutted, and the freeze-drying bottle cap assembly reaches a stable semi-compression state. At this time, the inside of the freeze-drying bottle 1 is connected to the outside world through the through hole 21, and the water vapor can escape after sublimation. After the drying process is completed, the freeze-drying needs to be sealed and stored. The bottle cap 2 is pressed down by a larger compression force. After the limit part 24 is deformed, the freeze-drying bottle 1 can continue to move up relative to the bottle cap 2. When the bottle mouth completely passes over the limit part 24 and is covered by the top of the bottle cap 2, the freeze-drying bottle cap assembly reaches a full compression state. At this time, the first groove 22 and the convex part 11 are clamped to reduce the risk of the bottle cap 2 loosening after sealing; the limit part 24 abuts against the lower edge of the boss 12, further ensuring the sealing.

Claims

1. A freeze-drying bottle cap assembly, comprising a freeze-drying bottle (1) and a bottle cap (2), characterized in that: The outer surface of the body of the freeze-drying bottle (1) is provided with a convex portion (11); and the inner wall of the bottle cap (2) is provided with two upper and lower grooves, namely a first groove (22) and a second groove (23); the second groove (23) is used for snapping with the convex portion (11) to achieve a semi-plugged state; and the first groove (22) is used for snapping with the convex portion (11) to achieve a fully plugged state.

2. The freeze-drying bottle cap assembly according to claim 1, characterized in that: The convex portion (11) surrounds the bottle body in a full circle, and the first groove (22) and the second groove (23) are also correspondingly arranged in a full circle.

3. The freeze-drying bottle cap assembly according to claim 1, characterized in that: The mouth of the freeze-drying bottle (1) protrudes outward in the radial direction relative to the bottleneck to form a boss (12); a through hole (21) is provided on the side wall of the bottle cap (2), and a limiting portion (24) is provided below and adjacent to the through hole (21); the limiting portion (24) protrudes from the inner wall of the bottle cap (2), and the limiting portion (24) can limit the boss (12).

4. The freeze-drying bottle cap assembly according to claim 3, characterized in that: There are two limiting portions (24), and the two limiting portions (24) are symmetrically arranged along the radial direction.

5. The freeze-drying bottle cap assembly according to claim 3, characterized in that: Along the radial direction pointing to the center of the circle, the thickness of the limiting portion (24) gradually decreases.

6. The freeze-drying bottle cap assembly according to claim 3, characterized in that: There are a plurality of through holes (21), and the plurality of through holes (21) are evenly distributed in the circumferential direction.

7. The freeze-drying bottle cap assembly according to claim 1, characterized in that: The wall thickness of the tail section of the bottle cap (2) is thinned, and the first groove (22) and the second groove (23) are located in the tail section.

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