A liquid-phase solvent bottle anti-toppling leakage device

Abstract

The utility model discloses a kind of liquid phase solvent bottle anti-toppling leakage devices, install on the bottle cap of solvent bottle, it include: shell, telescopic cylinder, plugging plate, first magnetic component, second magnetic component and elastic blocking piece, the shell is equipped with air hole, the sliding cavity is equipped in the shell, the shell lower end is equipped with the communicating port being linked with the bottle cap inner cavity;The telescopic cylinder is slidably arranged in the sliding cavity, the telescopic cylinder is equipped with air hole position and closure position in vertical direction along the sliding cavity, the telescopic cylinder is equipped with gas flow channel, one end of the gas flow channel is linked with the communicating port, other end is communicated with air hole when the telescopic cylinder is located in air hole position, and it is misaligned with air hole when the telescopic cylinder is located in closure position;The plugging plate is connected with the bottom end of the telescopic cylinder. It can close air hole when solvent bottle is toppling, prevent mobile phase leakage, protect instrument equipment and operator safety.

Description

Technical Field

[0001] This utility model relates to a device for preventing tipping and leakage of liquid solvent bottles. Background Technology

[0002] Currently, during the use of a liquid chromatograph, the solvent bottle is usually placed above the instrument, with a vent on the cap to ensure that the liquid pump can smoothly draw the mobile phase from the bottle. However, when the solvent bottle is tilted, the mobile phase inside will flow out through the vent, which may not only cause mobile phase contamination and corrosion of the instrument, but also pose a safety hazard because of the numerous pipelines and confined space around the instrument, where the mobile phase may spray onto the operator.

[0003] A search of existing technologies revealed a Chinese patent (CN215744206U) disclosing a fluid storage device with a venting mechanism. This fluid storage device has a vent that is closed by a valve. The valve includes a valve body with a sealing element. The sealing element includes a base connected to a plug via an elastic plate. The plug is located above the vent and has a tenon for sealing the vent. When the elastic plate is compressed, the tenon inserts into the vent to close it; when the user pulls the plug, the tenon disengages from the vent, opening it and ensuring pressure balance between the inside and outside of the container. However, this prior art requires manual operation to close the vent, and it cannot automatically close in case of accidental spillage of the solvent bottle, still posing a risk of mobile phase leakage. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a liquid solvent bottle anti-tipping and leakage device, which can seal the vent when the solvent bottle is tilted to prevent leakage of the mobile phase and protect the safety of instruments, equipment and operators.

[0005] To solve the above-mentioned technical problems, the technical solution of this utility model is: a device for preventing tipping and leakage of liquid solvent bottles, installed on the bottle cap of the solvent bottle, comprising:

[0006] The outer shell has a vent hole, a sliding cavity inside the outer shell, and a communication port at the lower end of the outer shell that communicates with the inner cavity of the bottle cap.

[0007] A telescopic cylinder is slidably disposed within the sliding cavity. The telescopic cylinder has a venting position and a closed position in the vertical direction along the sliding cavity. The telescopic cylinder has a gas flow channel. One end of the gas flow channel is connected to the connecting port, and the other end is connected to the vent hole when the telescopic cylinder is in the venting position, and is misaligned with the vent hole when the telescopic cylinder is in the closed position.

[0008] A sealing plate, which is connected to the bottom end of the telescopic cylinder and is disposed inside the bottle cap cavity;

[0009] A first magnetic component is installed at the upper end of the telescopic cylinder;

[0010] A second magnetic component is disposed on the top of the housing and is adapted to be magnetically attracted to the first magnetic component.

[0011] An elastic blocking plate is installed in the sliding cavity of the outer shell. The elastic blocking plate has an elastic contact end that abuts against the telescopic cylinder. The elastic blocking plate is adapted to restrict the first magnetic component and the second magnetic component at the upper end of the telescopic cylinder from getting close to each other.

[0012] The sealing plate is adapted to be pushed by the impact pressure of the liquid flow when the solvent bottle is tilted, and to overcome the resistance of the elastic blocking plate, thereby causing the gas flow channel on the telescopic cylinder to be misaligned with the vent on the outer shell.

[0013] Furthermore, the anti-tipping and leakage device for liquid solvent bottles also includes a recovery push rod, which is slidably mounted on the outer shell and is adapted to push the telescopic cylinder from the closed position to the venting position.

[0014] Furthermore, the recovery push rod and the housing are interference fit.

[0015] Furthermore, both the first magnetic component and the second magnetic component are permanent magnets.

[0016] Furthermore, the elastic blocking sheet comprises two pieces, which are symmetrically arranged on the inner wall of the outer shell along the axis of the telescopic cylinder.

[0017] Furthermore, both the first magnetic component and the second magnetic component are ring structures.

[0018] Furthermore, the sealing plate has a circular plate-like structure.

[0019] Furthermore, the side wall of the telescopic cylinder is provided with a guide groove, and the inner wall of the outer shell is provided with a guide protrusion that cooperates with the guide groove. The guide groove is adapted to cooperate with the guide protrusion to restrict the telescopic cylinder from sliding in the vertical direction.

[0020] Furthermore, the sealing plate is adapted to abut against the communication port when the telescopic cylinder is in the closed position.

[0021] By adopting the above technical solution, this utility model has the following beneficial effects:

[0022] When the solvent bottle is in normal use, the telescopic cylinder is in the venting position. At this time, one end of the gas flow channel on the telescopic cylinder is connected to the connecting port, and the other end is connected to the vent hole on the outer shell. The inner cavity of the bottle cap is connected to the outside through the gas flow channel and the vent hole, ensuring that the liquid phase pump can draw the mobile phase in the bottle. When the solvent bottle tipps over, the liquid flow inside generates impact pressure on the sealing plate. This pressure causes the telescopic cylinder to move vertically upwards within the sliding chamber. The telescopic cylinder overcomes the resistance from the elastic contact end of the elastic baffle and continues to move upwards. The distance between the first magnetic component at the top of the telescopic cylinder and the second magnetic component at the top of the outer shell decreases. When the liquid impact pressure is sufficient to make the magnetic attraction between the first and second magnetic components greater than the resistance of the elastic baffle, the telescopic cylinder quickly moves upwards to the closed position and is attracted and fixed by the second magnetic component. At this point, the gas flow channel on the telescopic cylinder is misaligned with the vent on the outer shell, thus breaking the connection. Simultaneously, the sealing plate moves upwards to abut against the connection port, achieving a double seal between the inner cavity of the bottle cap and the outside, preventing liquid leakage from the vent. This solves the problems of mobile phase contamination, instrument corrosion, and injury caused by spraying when the solvent bottle tipps over.

[0023] The recovery push rod is slidably mounted on the outer casing. When the solvent bottle needs to be reused, the operator pushes the recovery push rod to overcome the interference fit with the outer casing and enter the casing. The recovery push rod pushes the telescopic cylinder from the closed position downwards to the venting position. The first magnetic component separates from the second magnetic component. After the telescopic cylinder returns to the venting position, the elastic contact end of the elastic blocking plate abuts against the telescopic cylinder again, realizing the device reset. Both the first and second magnetic components adopt a permanent magnet structure, with stable magnetic attraction, requiring no external power supply. The two elastic blocking plates are symmetrically arranged on the inner wall of the outer casing along the axis of the telescopic cylinder, so that the telescopic cylinder is subjected to balanced force. The guide groove on the side wall of the telescopic cylinder cooperates with the guide protrusion on the inner wall of the outer casing to restrict the telescopic cylinder from sliding in the vertical direction and prevent the telescopic cylinder from deflecting or getting stuck.

[0024] In summary, this utility model utilizes a liquid impact pressure triggering mechanism when the solvent bottle is tilted to achieve misalignment and closure of the gas flow channel and vent, as well as sealing of the connection port by the sealing plate, preventing liquid leakage and protecting the safety of instruments, equipment, and operators. At the same time, the device is reset by the reset push rod. The structure is simple and the operation is reliable. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the anti-tipping and leakage device for liquid solvent bottles of this utility model. Figure 1 ;

[0026] Figure 2 This is a schematic diagram of the anti-tipping and leakage device for liquid solvent bottles of this utility model. Figure 2 . Detailed Implementation

[0027] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0028] like Figure 1-2 As shown, a liquid solvent bottle anti-tipping and leakage prevention device is installed on the bottle cap 1 of the solvent bottle, comprising:

[0029] The outer shell 2 has a vent 21 on it, a sliding cavity 22 inside it, and a communication port 23 at the lower end of it that communicates with the inner cavity of the bottle cap 1.

[0030] The telescopic cylinder 3 is slidably disposed in the sliding cavity 22. The telescopic cylinder 3 has a venting position and a closed position in the vertical direction along the sliding cavity 22. The telescopic cylinder 3 is provided with a gas flow channel 31. One end of the gas flow channel 31 is connected to the connecting port 23, and the other end is connected to the vent hole 21 when the telescopic cylinder 3 is in the venting position, and is misaligned with the vent hole 21 when the telescopic cylinder 3 is in the closed position.

[0031] The sealing plate 4 is connected to the bottom end of the telescopic cylinder 3 and is set inside the bottle cap 1.

[0032] The first magnetic component 5 is installed at the upper end of the telescopic cylinder 3;

[0033] The second magnetic component 7 is disposed on the top of the housing 2 and is adapted to be magnetically attracted to the first magnetic component 5.

[0034] The elastic blocking plate 6 is installed in the sliding cavity 22 of the outer shell 2. The elastic blocking plate 6 is provided with an elastic contact end 61 that abuts against the telescopic cylinder 3. The elastic blocking plate 6 is suitable for restricting the first magnetic component 5 and the second magnetic component 7 at the upper end of the telescopic cylinder 3 from getting close to each other.

[0035] Among them, the sealing plate 4 is adapted to be pushed by the impact pressure of the liquid flow when the solvent bottle is tilted and overcome the resistance of the elastic blocking plate 6, so as to cause the gas flow channel 31 on the telescopic cylinder 3 to be misaligned with the vent hole 21 on the outer shell 2, and at the same time abut against the connecting port 23.

[0036] In this embodiment, as Figure 1-2As shown, under normal use, the telescopic cylinder 3 is in the venting position. At this time, one end of the gas flow channel 31 on the telescopic cylinder 3 is connected to the connecting port 23, and the other end is connected to the vent hole 21 on the outer shell 2. The inner cavity of the bottle cap 1 is connected to the outside through the gas flow channel 31 and the vent hole 21, ensuring that the liquid phase pump can extract the mobile phase in the bottle. When the solvent bottle tipps over, the liquid flow inside generates impact pressure on the sealing plate 4. The sealing plate 4, under the impact pressure of the liquid flow, drives the telescopic cylinder 3 to move vertically upward in the sliding cavity 22. The telescopic cylinder 3 continues to move upward, overcoming the resistance generated by the elastic contact end 61 of the elastic blocking plate 6. The distance between the first magnetic component 5 at the upper end of the telescopic cylinder 3 and the second magnetic component 7 at the top of the outer shell 2 decreases. When the liquid impact pressure is sufficient to make the magnetic attraction between the first magnetic component 5 and the second magnetic component 7 greater than the resistance of the elastic blocking plate 6, the telescopic cylinder 3 quickly moves upward to the closed position and is attracted and fixed by the second magnetic component 7. At this time, the gas flow channel 31 on the telescopic cylinder 3 is misaligned with the vent 21 on the outer shell 2 and disconnected. At the same time, the sealing plate 4 moves upward to abut the connecting port 23, realizing the double sealing of the inner cavity of the bottle cap 1 from the outside, preventing liquid from leaking from the vent 21, and solving the problems of mobile phase outflow causing mobile phase contamination, instrument corrosion, and injury from spray when the solvent bottle is tipped over.

[0037] Specifically, such as Figure 1 As shown, the anti-tipping and leakage device for liquid solvent bottles also includes a restoring push rod 8, which is slidably mounted on the outer casing 2. The restoring push rod 8 is adapted to push the telescopic cylinder 3 from the closed position to the ventilated position.

[0038] Specifically, such as Figure 1 As shown, the restoration push rod 8 and the outer shell 2 are interference fit.

[0039] In this embodiment, as Figure 1-2 As shown, the recovery push rod 8 is slidably disposed outside the outer shell 2. When the telescopic cylinder 3 is in the closed position, the operator pushes the recovery push rod 8, which moves inward along the outer shell 2 and passes through the hole in the outer shell 2 into the sliding cavity 22. The pushing end of the recovery push rod 8 contacts the upper end of the telescopic cylinder 3 and applies a downward pushing force. This pushing force overcomes the magnetic attraction between the first magnetic component 5 and the second magnetic component 7, causing the telescopic cylinder 3 to move downward from the closed position to the venting position. After the telescopic cylinder 3 returns to the venting position, the gas flow channel 31 reconnects with the vent 21, the sealing plate 4 separates from the connecting port 23, and the inner cavity of the bottle cap 1 returns to the state of gas communication with the outside, allowing the solvent bottle to continue to be used normally.

[0040] The reset push rod 8 and the outer shell 2 are interference fit. The outer diameter of the reset push rod 8 is slightly larger than the inner diameter of the hole on the outer shell 2 through which it passes. When the reset push rod 8 is not pushed, the friction generated by the interference fit keeps the reset push rod 8 in the initial position outside the outer shell 2, preventing the reset push rod 8 from accidentally entering the sliding cavity 22 and triggering the telescopic cylinder 3 to reset due to vibration or collision during transportation or use.

[0041] Specifically, such as Figure 1 As shown, both the first magnetic component 5 and the second magnetic component 7 are permanent magnets.

[0042] Specifically, such as Figure 1 As shown, both the first magnetic component 5 and the second magnetic component 7 are ring structures.

[0043] In this embodiment, as Figure 1 As shown, both the first magnetic component 5 and the second magnetic component 7 are permanent magnets. When the telescopic cylinder 3 moves upward to the closed position, the first magnetic component 5 and the second magnetic component 7 attract each other and fix the telescopic cylinder 3 in the closed position.

[0044] The first magnetic component 5 and the second magnetic component 7 are both annular structures, with the central hole of the annular structure allowing the telescopic cylinder 3 or the restoring push rod 8 to pass through.

[0045] Specifically, such as Figure 1 As shown, the elastic blocking plate 6 includes two plates, which are symmetrically arranged on the inner wall of the outer shell 2 along the axis of the telescopic cylinder 3.

[0046] Specifically, such as Figure 1 As shown, the sealing plate 4 is a circular plate structure.

[0047] Specifically, such as Figure 1 As shown, the side wall of the telescopic cylinder 3 is provided with a guide groove (not shown in the figure), and the inner wall of the outer shell 2 is provided with a guide protrusion that cooperates with the guide groove. The guide groove is adapted to cooperate with the guide protrusion to restrict the telescopic cylinder 3 from sliding in the vertical direction.

[0048] Specifically, such as Figure 1 As shown, the sealing plate 4 is adapted to abut against the communication port 23 when the telescopic cylinder 3 is in the closed position.

[0049] In this embodiment, as Figure 1-2As shown, the elastic blocking plate 6 includes two pieces. The two elastic blocking plates 6 are symmetrically arranged on the inner wall of the outer shell 2 along the axis of the telescopic cylinder 3. The elastic contact ends 61 of the two elastic blocking plates 6 extend from the inner wall of the outer shell 2 toward the center of the sliding cavity 22 and abut against the outer surface of the telescopic cylinder 3. When the telescopic cylinder 3 is in the ventilated position, the two elastic blocking plates 6 apply resistance symmetrically distributed along the axial direction to the telescopic cylinder 3. This symmetrically distributed resistance keeps the telescopic cylinder 3 in the ventilated position before it is subjected to liquid impact pressure. At the same time, the symmetrical arrangement avoids the telescopic cylinder 3 from tilting or getting stuck in the sliding cavity 22 due to unilateral resistance.

[0050] The sealing plate 4 is a circular plate structure, the diameter of which matches the inner diameter of the connecting port 23. When the telescopic cylinder 3 moves upward to the closed position, the circular plane of the sealing plate 4 abuts against the end face of the connecting port 23, forming a surface contact seal between the circular plate structure and the connecting port 23, preventing liquid from entering the interior of the outer shell 2 through the connecting port 23. The elastic blocking plate can be made of elastic materials such as stainless steel or phosphor bronze.

[0051] In practical use, when the solvent bottle is not tipped over but a temporary seal is needed for the inner cavity of the cap 1, the operator can manually push the sealing plate 4 upwards using an external tool, causing the telescopic cylinder 3 to move upwards to the closed position. This misaligns the gas flow channel 31 with the vent 21 and causes the sealing plate 4 to abut against the connection port 23, achieving a temporary seal for the inner cavity of the cap 1. In some embodiments, a magnetic tool can also be used outside the outer shell 2. The magnetic tool generates a magnetic attraction between the outer shell 2 and the first magnetic component 5, attracting the telescopic cylinder 3 from the vent position to the closed position, achieving an active seal. When the solvent bottle tipps over but the amount of liquid phase inside is small, and the impact pressure generated by the liquid flow is insufficient to push the sealing plate 4 and the telescopic cylinder 3 to overcome the resistance of the elastic blocking plate 6 and move upwards to the closed position, the sealing plate 4 can still block the liquid flow at the connection port 23, slowing down the speed at which the liquid flows into the outer shell 2 through the connection port 23, and to a certain extent preventing a small amount of liquid phase from spraying out from the vent 21. In some embodiments, the sealing plate 4 can be provided with a clearance groove for the liquid pump's suction pipe to pass through. The inner diameter of the connecting port 23 is smaller than the outer diameter of the telescopic cylinder 3. When the telescopic cylinder 3 moves down to the ventilation position, the sealing plate 4 or the bottom end of the telescopic cylinder 3 abuts against the edge of the connecting port 23 to prevent the telescopic cylinder 3 from continuing to move down, disengaging from the sliding cavity 22, and sliding out of the outer shell 2.

[0052] The specific embodiments described above further illustrate the technical problems, technical solutions, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A device for preventing tipping and leakage of a liquid solvent bottle, installed on the cap (1) of the solvent bottle, characterized in that, include: The outer shell (2) has a vent hole (21) on it, a sliding cavity (22) inside it, and a communication port (23) at the lower end of the outer shell (2) that communicates with the inner cavity of the bottle cap (1). Telescopic cylinder (3), the telescopic cylinder (3) is slidably disposed in the sliding cavity (22), the telescopic cylinder (3) has a ventilation position and a closed position in the vertical direction along the sliding cavity (22), the telescopic cylinder (3) is provided with a gas flow channel (31), one end of the gas flow channel (31) is connected to the connecting port (23), and the other end is connected to the vent hole (21) when the telescopic cylinder (3) is in the ventilation position, and is misaligned with the vent hole (21) when the telescopic cylinder (3) is in the closed position; A sealing plate (4) is connected to the bottom end of the telescopic cylinder (3) and is disposed inside the cavity of the bottle cap (1); The first magnetic component (5) is installed at the upper end of the telescopic cylinder (3); The second magnetic component (7) is disposed on the top of the outer casing (2) and is adapted to be magnetically attracted to the first magnetic component (5); An elastic blocking plate (6) is installed in the sliding cavity (22) of the outer shell (2). The elastic blocking plate (6) is provided with an elastic contact end (61) that abuts against the telescopic cylinder (3). The elastic blocking plate (6) is adapted to restrict the first magnetic component (5) and the second magnetic component (7) at the upper end of the telescopic cylinder (3) from getting close to each other. The sealing plate (4) is adapted to be pushed by the liquid flow impact pressure and overcome the resistance of the elastic blocking plate (6) when the solvent bottle is tilted, so as to cause the gas flow channel (31) on the telescopic cylinder (3) to be misaligned with the vent hole (21) on the outer shell (2).

2. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: It also includes a recovery push rod (8), which is slidably disposed on the housing (2) and is adapted to push the telescopic cylinder (3) from the closed position to the ventilated position.

3. The anti-tipping and leakage device for liquid solvent bottles according to claim 2, characterized in that: The restoring push rod (8) and the outer shell (2) are interference fit.

4. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: Both the first magnetic component (5) and the second magnetic component (7) are permanent magnets.

5. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: The elastic blocking sheet (6) includes two sheets, which are symmetrically arranged on the inner wall of the outer shell (2) along the axis of the telescopic cylinder (3).

6. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: Both the first magnetic component (5) and the second magnetic component (7) are ring structures.

7. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: The sealing plate (4) is a circular plate structure.

8. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: The telescopic cylinder (3) has a guide groove on its side wall and a guide protrusion that cooperates with the guide groove on the inner wall of the outer shell (2). The guide groove is adapted to cooperate with the guide protrusion to restrict the telescopic cylinder (3) from sliding in the vertical direction.

9. The anti-tipping and leakage device for liquid solvent bottles according to claim 1, characterized in that: The sealing plate (4) is adapted to abut against the communication port (23) when the telescopic cylinder (3) is in the closed position.

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