High-purity solvent filling device and filling method

Abstract

The application relates to the technical field of solvent filling, in particular to a high-purity solvent filling device and a filling method, which comprise a partition arranged in a liquid outlet pipe, the partition comprises a partition plate, the cross section of the partition plate is designed in an L shape; an outlet is arranged in the liquid outlet pipe and seals the liquid outlet pipe, the upper end surface of the sealing plate is attached to the lower end surface of the partition plate to form a sealed cavity, inert gas is stored in the cavity, and the density of the inert gas is greater than that of air. The inert gas and the high-purity solvent are released in sequence, the inert gas is filled in the cavity in advance before the high-purity solvent is filled, the air in the container is replaced, the high-purity solvent is protected, and a short interval exists in the release process of the inert gas and the high-purity solvent, so that air bubbles in the high-purity solvent during release can be avoided, the accuracy of the liquid level of the high-purity solvent in the container is ensured, and the staff can be facilitated to monitor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of solvent filling, in particular to a high-purity solvent filling device and a filling method. BACKGROUND

[0002] The high-purity solvent filling device is an apparatus for filling high-purity solvents. Due to the characteristics of high-purity solvents, in order to avoid oxidation caused by contact with air, inert gas is introduced to protect the high-purity solvents in the prior art.

[0003] For example, a Chinese patent with the application number "201410110784.3" and the title "High-purity solvent automatic filling line" introduces inert gas while introducing high-purity solvent to form protection for high-purity solvent.

[0004] For another example, a Chinese patent with the application number "201610327843.1" and the title "Liquid filling and inert gas filling protection integrated device and filling method thereof" first evacuates and then fills inert gas after introducing solvent into the container.

[0005] However, the container itself has air inside before filling the solvent, and the solvent will still contact with air when being injected into the container. The prior art does not completely block the contact between air and high-purity solvent. SUMMARY

[0006] The present application provides a high-purity solvent filling device and a filling method to solve the problems in the prior art. The specific technical solutions are as follows:

[0007] On the one hand, the present application provides a high-purity solvent filling device, which comprises:

[0008] a tank body for storing high-purity solvent;

[0009] a liquid outlet pipe inserted into the bottom of the tank body and driven to move downward and insert into the container by an external force;

[0010] a partition piece arranged in the liquid outlet pipe, the partition piece comprising:

[0011] a partition plate, the cross section of the partition plate being designed in "L" shape;

[0012] an outlet, the sealing plate being rotationally arranged in the liquid outlet pipe and forming a sealing blockage, the upper end surface of the sealing plate being attached to the lower end surface of the partition plate to form a sealed cavity, the cavity storing inert gas, the density of the inert gas being greater than that of air, an outlet being formed on the sealing plate, the outlet being coincided with the vertical edge of the partition plate on the projection plane of the sealing plate;

[0013] The sealing plate is driven by an external force to rotate around the center of the cavity to one side, so that the outlet is communicated with the cavity and the tank in sequence, and inert gas is pre-filled into the container.

[0014] As a further technical scheme of the present application, a notch is formed in the sidewall of the liquid outlet pipe, the top wall and the bottom wall of the notch are provided with cavities, a driving member is slidably connected to the liquid outlet pipe, and the driving member comprises:

[0015] A baffle is inserted into the notch and blocks the notch;

[0016] An abutment plate is connected to the outside of the baffle, and the outer diameter of the abutment plate is greater than the inner diameter of the container port;

[0017] A horizontal plate is arranged in the liquid outlet pipe and connected to the inner wall of the baffle, and the horizontal plate has a sliding block inside;

[0018] A connecting rod is connected to the center of the bottom of the sealing plate, a spiral groove is formed in the connecting rod, and the sliding block is slidably connected to the spiral groove;

[0019] When the driving member moves downward, it is abutted by the container port to drive the horizontal plate to move relative to the connecting rod, so that the sealing plate is driven to rotate to release the inert gas after the liquid outlet pipe is inserted into the container.

[0020] As a further technical scheme of the present application, the baffle and the abutment plate are connected by a connecting ring, the abutment plate and the connecting ring are rotationally connected, the inner diameter of the connecting ring is greater than the outer diameter of the liquid outlet pipe, and the outer diameter of the connecting ring is less than the inner diameter of the container port.

[0021] As a further technical scheme of the present application, the abutment plate is designed in a whole annular shape, can form a seal for the container when the container port is closed, and the bottom of the abutment plate is connected to a sealing gasket made of rubber.

[0022] As a further technical scheme of the present application, an exhaust passage is formed in the abutment plate, the exhaust passage extends downward and penetrates the sealing gasket, a cover plate is closed on the exhaust passage, and the cover plate is connected to the abutment plate by a second spring.

[0023] As a further technical scheme of the present application, a gas pipe is inserted into the cavity, and the gas pipe is connected to a gas source.

[0024] As a further technical scheme of the present application, a fixing ring is arranged above the abutment plate, the fixing ring is connected to the outside of the liquid outlet pipe, and a first spring is connected between the fixing ring and the abutment plate.

[0025] On the other hand, the present application also provides a filling method of the high-purity solvent filling device, and the specific steps are as follows:

[0026] S1, driving the liquid outlet pipe to move downwards;

[0027] S11, releasing the inert gas: when the liquid outlet pipe moves downwards and is inserted into the container, the driving part moves downwards synchronously with the liquid outlet pipe and is in contact with the container mouth, and the relative movement between the driving part and the liquid outlet pipe occurs, at this time, the sliding block slides in the spiral groove and drives the connecting rod and the sealing plate to rotate around the connecting rod, the outlet is connected with the partition again, and the inert gas in the partition is released;

[0028] S12, releasing the high-purity solvent: when the sealing plate rotates to a certain degree, the outlet is blocked by the partition again, the gas release is completed, and the sealing plate blocks the liquid outlet pipe again, and as the sealing plate continues to rotate, the outlet is connected with the tank body, and the high-purity solvent is released;

[0029] S2, driving the liquid outlet pipe to move upwards and reset.

[0030] The beneficial effects of the present application are as follows:

[0031] (1) In the present application, the inert gas and the high-purity solvent are released in sequence, the air in the container is replaced before the high-purity solvent is filled, the inert gas is filled in advance, the protection of the high-purity solvent is formed, and there is a short interval between the release of the inert gas and the high-purity solvent, which can avoid the generation of bubbles in the high-purity solvent during the release, ensure the accuracy of the liquid level of the high-purity solvent in the container, and facilitate the monitoring of the workers.

[0032] (2) Through the setting of the driving part, the sealing plate can automatically rotate and release the inert gas and the high-purity solvent in sequence during the downward movement of the sealing plate after the liquid outlet pipe is inserted into the container, the filling efficiency is ensured, and the workers do not need to control it again, and the possibility of misrelease of the gas outside the container is avoided.

[0033] (3) Through the design of the abutting plate, the container can be sealed, the inside and outside of the container can be isolated, the external air can be prevented from being sucked into the container by negative pressure during the liquid or gas filling process, and an exhaust passage is arranged on the abutting plate, which is a one-way flow passage from the inside of the container to the outside of the container. Under the premise of preventing the external air from entering the container, the excess air in the container can be effectively exhausted. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 The overall structure schematic diagram of the high-purity solvent filling device is shown;

[0035] Figure 2 The structure schematic diagram of the liquid outlet pipe is shown;

[0036] Figure 3 The cross-sectional structure schematic diagram of the liquid outlet pipe is shown;

[0037] Figure 4 An internal structure diagram of the liquid outlet pipe is shown;

[0038] Figure 5 An exploded structure diagram of the sealing plate, the cross plate and the connecting rod is shown;

[0039] Figure 6 A structure diagram at the baffle and the connecting ring is shown;

[0040] Figure 7 A structure diagram of Figure 6 An enlarged structure diagram at A in FIG. 4 is shown.

[0041] BRIEF DESCRIPTION OF DRAWINGS: 100, tank body; 110, driving cylinder; 120, fixed ring; 130, first spring; 200, liquid outlet pipe; 210, notch; 220, cavity; 300, partition; 310, baffle; 320, sealing plate; 321, outlet; 330, cavity; 340, air pipe; 400, driving piece; 410, baffle; 420, connecting ring; 430, abutting plate; 431, exhaust passage; 432, cover plate; 433, second spring; 440, sealing gasket; 450, cross plate; 451, sliding block; 460, connecting rod; 461, helical groove. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme of the present application will be described clearly and completely below in conjunction with embodiments.

[0043] The high-purity solvent filling device is a device for filling high-purity solvents according to the characteristics of high-purity solvents. Due to the characteristics of high-purity solvents, in order to avoid oxidation of high-purity solvents caused by contact with air, inert gas is introduced into the high-purity solvents at the same time in the prior art to protect the high-purity solvents.

[0044] However, the container itself has air inside before the solvent is filled, and the solvent will still contact with air when it is injected into the container. The prior art does not completely block the contact between air and high-purity solvents.

[0045] To solve the above technical problems, the present application provides a high-purity solvent filling device, Figure 1 An overall structure diagram of the high-purity solvent filling device is shown; Figure 1 In the embodiment, the high-purity solvent filling device comprises:

[0046] The tank body 100 is used for storing high-purity solvents.

[0047] The liquid outlet pipe 200 is inserted into the bottom of the tank body 100 and is driven to move downward and insert into the container under the action of an external force.

[0048] In use, a driving structure is arranged, the output end of the driving structure is connected with the liquid outlet pipe 200, when the driving structure is started, the liquid outlet pipe 200 can be driven to move downward and be inserted into the container for containing the high-purity solvent, at this time, the high-purity solvent can be injected into the container.

[0049] Figure 3 A sectional view structure schematic diagram at the liquid outlet pipe 200 is shown; Figure 4 A internal structure schematic diagram of the liquid outlet pipe 200 is shown; Figure 5 An explosion structure schematic diagram of the sealing plate 320, the horizontal plate 450 and the connecting rod 460 is shown; Figures 3-5 In the application, the high-purity solvent filling device further comprises a partition 300 arranged in the liquid outlet pipe 200, the partition 300 comprises:

[0050] The partition plate 310 is designed as an "L" shape in cross section;

[0051] The sealing plate 320 is arranged in the liquid outlet pipe 200 and forms a blockage, the upper end surface of the sealing plate 320 is attached to the lower end surface of the partition plate 310 to form a sealed cavity 330, the cavity 330 stores inert gas, the density of the inert gas is greater than that of air, an outlet 321 is arranged on the sealing plate 320, the outlet 321 coincides with the vertical edge of the partition plate 310 on the projection surface of the sealing plate 320;

[0052] When the liquid outlet pipe 200 is inserted into the container, the sealing plate 320 is driven to rotate to one side of the cavity 330 with the center as the axis, so that the outlet 321 is communicated with the cavity 330 and the inert gas stored in the cavity 330 is filled into the container and forms replacement of air.

[0053] In use, when the liquid outlet pipe 200 is inserted into the container, the sealing plate 320 is driven to rotate to the side of the cavity 330, so that the outlet 321 is communicated with the cavity 330, the inert gas in the cavity 330 is filled into the container in advance, the density of the inert gas is greater than that of air and begins to sink, the air is extruded by the inert gas and begins to float and escape to the outside of the container, so that the container is filled with inert gas to isolate air, in the application, the inert gas is filled in advance before the high-purity solvent is filled, the air in the container is replaced, and the high-purity solvent is protected;

[0054] When the sealing plate 320 rotates 180 degrees, the outlet 321 is again blocked by the partition plate 310, and the sealing plate 320 again forms a blockage to the liquid outlet pipe 200. As the sealing plate 320 continues to rotate, the outlet 321 is connected to the tank 100, and the release of high-purity solvent begins. In this application, the inert gas and high-purity solvent are released in sequence, and there is a short interval between the release of the inert gas and the high-purity solvent. This can avoid the formation of bubbles in the high-purity solvent during release, ensure the accuracy of the liquid level in the container, and facilitate monitoring by the staff.

[0055] Figure 6 The structure diagram of the baffle 410 and the connecting ring 420 is shown; Figures 4-6 In this application, the high-purity solvent filling device has a notch 210 on the side wall of the liquid outlet pipe 200, and the top wall and the bottom wall of the notch 210 are provided with cavities 220.

[0056] The drive member 400 is slidably connected to the liquid outlet pipe 200, and the drive member 400 includes:

[0057] The baffle 410 is inserted into the notch 210 and forms a blockage;

[0058] The abutment plate 430 is connected to the outside of the baffle 410, and the outer diameter of the abutment plate 430 is greater than the inner diameter of the container port;

[0059] The horizontal plate 450 is placed in the liquid outlet pipe 200 and connected to the inner wall of the baffle 410, and the horizontal plate 450 has a sliding block 451 inside;

[0060] The connecting rod 460 is connected to the center of the bottom of the sealing plate 320, and the connecting rod 460 has a spiral groove 461, and the sliding block 451 is slidably connected to the spiral groove 461;

[0061] When the drive member 400 moves downward, it is abutted by the container port to drive the horizontal plate 450 to move relative to the connecting rod 460, so as to drive the sealing plate 320 to rotate and release the inert gas after the liquid outlet pipe 200 is inserted into the container.

[0062] In use, when the liquid outlet pipe 200 is lowered, the driving member 400 is lowered synchronously with the liquid outlet pipe 200 at this time, when the liquid outlet pipe 200 is inserted into the container, with the continuous lowering of the liquid outlet pipe 200, the driving member 400 is attached to the container mouth, with the continuous lowering of the liquid outlet pipe 200, the driving member 400 is resisted by the container mouth and moves relatively with the liquid outlet pipe 200, at this time, the sealing plate 320 and the connecting rod 460 move relatively with the horizontal plate 450, the sliding block 451 slides in the spiral groove 461 and drives the connecting rod 460 and the sealing plate 320 to rotate around the connecting rod 460, the outlet 321 starts to communicate with the partition 300, and the inert gas in the partition 300 is released, at this time, the inert gas enters the container to form displacement with the air, in the application, the abutting plate 430 is used to drive the horizontal plate 450 and the connecting rod 460 to move relatively in the vertical plane, so that the sealing plate 320 is automatically rotated in the process of lowering after the liquid outlet pipe 200 is inserted into the container and releases the inert gas and the high-purity solvent in turn, the filling efficiency is ensured not to be affected, the worker does not need to control twice, and the possibility that the gas is mistakenly released outside the container is avoided.

[0063] It should be noted that the wall thickness of the baffle plate 410 matches the width of the cavity 220, and the baffle plate 410 always blocks the gap 210 in the process of relative movement between the driving member 400 and the liquid outlet pipe 200, so as to ensure the sealing.

[0064] Continuing to refer to Figure 6 The baffle plate 410 and the abutting plate 430 are connected through the connecting ring 420, the abutting plate 430 is threadedly connected with the connecting ring 420, the inner diameter of the connecting ring 420 is greater than the outer diameter of the liquid outlet pipe 200, and the outer diameter of the connecting ring 420 is less than the inner diameter of the container mouth.

[0065] Through the size design of the connecting ring 420, it is ensured that the connecting ring 420 does not interfere in the relative movement with the liquid outlet pipe 200, and it is also ensured that the connecting ring 420 can be inserted into the container, and the connecting mode between the connecting ring 420 and the abutting plate 430 can make the two move relatively up and down, the height of the abutting plate 430 is adjusted, so as to adapt to the depth of the liquid outlet pipe 200 inserted according to specific needs, and the applicability of the device is improved.

[0066] Continuing to refer to Figure 6 The abutting plate 430 is designed in a whole circular ring shape, can form sealing to the container when covering the container mouth, and is connected with a sealing gasket 440 at the bottom, and the sealing gasket 440 is made of rubber material.

[0067] Through the above design, the abutting plate 430 can form sealing to the container when covering the container mouth, can form isolation between the inside and outside of the container, so as to avoid that the external air is sucked into the container by negative pressure in the process of liquid or gas filling affected by the flow rate, and the sealing effect of the abutting plate 430 to the container mouth can be further improved by the arrangement of the sealing gasket 440.

[0068] Figure 7 As shown in Figure 6 The enlarged structural schematic view in A in FIG. 4; Figure 7 In the embodiment, an exhaust passage 431 is formed on the abutting plate 430, the exhaust passage 431 extends downward and penetrates the sealing pad 440, and a cover plate 432 is combined on the exhaust passage 431, the cover plate 432 is connected with the abutting plate 430 through a second spring 433.

[0069] In use, as the gas pressure in the container gradually increases, the gas pressure can push the cover plate 432 to rise and remove the plugging of the exhaust passage 431, and the second spring 433 is elastically deformed, at this time, air can be discharged from the container along the exhaust passage 431, when the pressure inside and outside the container is stable, the cover plate 432 can be reset to form the plugging of the exhaust passage 431 again under the driving of the elastic force of the second spring 433, so as to ensure the sealing of the container, in the application, the exhaust passage 431 is arranged on the abutting plate 430, and the exhaust passage 431 is a one-way flow passage from the inside of the container to the outside of the container, under the premise of avoiding the entry of external air into the container, the excess air in the container can be effectively discharged.

[0070] Continuing to refer to Figure 4 A gas pipe 340 is inserted into the accommodating cavity 330, and the gas pipe 340 is connected with a gas source.

[0071] Through the design of the gas pipe 340, the inert gas can be continuously filled into the accommodating cavity 330, on the one hand, the inert gas is sufficient to form the replacement of air, on the other hand, the pressure inside the accommodating cavity 330 is increased, and the flow rate of the inert gas is increased to ensure the injection amount of the inert gas into the container.

[0072] Figure 2 As shown in the structural schematic view of the liquid outlet pipe 200; Figure 2 In the embodiment, a fixing ring 120 is arranged above the abutting plate 430, the fixing ring 120 is connected to the outside of the liquid outlet pipe 200, and a first spring 130 is connected between the fixing ring 120 and the abutting plate 430.

[0073] When the abutting plate 430 and the liquid outlet pipe 200 move relatively, the first spring 130 can be deformed under extrusion, and when the liquid outlet pipe 200 moves upward, the first spring 130 can drive the abutting plate 430 to reset, so as to repeat the filling of the device.

[0074] It should be noted that, as Figure 2As shown, the driving cylinder 110 is installed on the tank body 100, and the output end of the driving cylinder 110 is connected with the fixed ring 120. When the driving cylinder 110 is started, the fixed ring 120 can be driven to move downward synchronously with the liquid outlet pipe 200 to form filling. In the present application, the driving cylinder 110 is used to drive the fixed ring 120 to serve as the driving member of the liquid outlet pipe 200, but this is not the only way. In some other embodiments, other ways can also be used to drive the liquid outlet pipe 200 to move downward.

[0075] According to the filling method of the high-purity solvent filling device, the specific steps are as follows:

[0076] S1, driving the liquid outlet pipe 200 to move downward;

[0077] S11, releasing the inert gas: when the liquid outlet pipe 200 moves downward and is inserted into the container, the driving member 400 moves downward synchronously with the liquid outlet pipe 200 and is abutted against the container opening to move relatively with the liquid outlet pipe 200. At this time, the sliding block 451 slides in the spiral groove 461 and drives the connecting rod 460 and the sealing plate 320 to rotate around the connecting rod 460. The outlet 321 starts to communicate with the partition 300, and the inert gas in the partition 300 is released.

[0078] S12, releasing the high-purity solvent: when the sealing plate 320 rotates by 180 degrees, the outlet 321 is again blocked by the partition 310, the gas releasing is ended, and the sealing plate 320 again forms the sealing of the liquid outlet pipe 200. With the continuous rotation of the sealing plate 320, the outlet 321 communicates with the tank body 100, and the high-purity solvent is released.

[0079] S2, driving the liquid outlet pipe 200 to move upward and reset.

[0080] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it.

Claims

1. A high-purity solvent filling device, comprising a tank (100) for storing high-purity solvent; a liquid outlet pipe (200) inserted into the bottom of the tank (100) and driven to move downward and insert into a container by an external force; characterized in that a partition (300) arranged in the liquid outlet pipe (200), the partition (300) comprising a baffle (310) with an "L" shaped cross section; a sealing plate (320) arranged in the liquid outlet pipe (200) and forming a seal, the upper end surface of the sealing plate (320) being attached to the lower end surface of the baffle (310) to form a sealed cavity (330), the cavity (330) containing inert gas, the density of the inert gas being greater than that of air, an outlet (321) being formed in the sealing plate (320) and coinciding with the vertical edge of the baffle (310) on the projection plane of the sealing plate (320); the sealing plate (320) being driven to rotate to one side of the cavity (330) with the center as the axis, so that the outlet (321) is sequentially communicated with the cavity (330) and the tank (100) to pre-fill the inert gas into the container; a notch (210) being formed in the side wall of the liquid outlet pipe (200), the top wall and the bottom wall of the notch (210) being provided with cavities (220), a driving member (400) being slidably connected to the liquid outlet pipe (200), the driving member (400) comprising a baffle (410) inserted into the notch (210) and forming a seal; an abutting plate (430) connected to the outside of the baffle (410), the outer diameter of the abutting plate (430) being greater than the inner diameter of the container opening; a cross plate (450) arranged in the liquid outlet pipe (200) and connected to the inner wall of the baffle (410), the cross plate (450) having a sliding block (451) therein; a connecting rod (460) connected to the center of the bottom of the sealing plate (320), the connecting rod (460) being provided with a helical groove (461), and the sliding block (451) being slidably connected to the helical groove (461); when the driving member (400) moves downward, it is abutted by the container opening to drive the cross plate (450) to move relative to the connecting rod (460) to drive the sealing plate (320) to rotate and release the inert gas after the liquid outlet pipe (200) is inserted into the container.

2. The high purity solvent filling apparatus according to claim 1, characterized by: the baffle (410) and the abutting plate (430) are connected by a connecting ring (420), the abutting plate (430) and the connecting ring (420) are rotationally connected, the inner diameter of the connecting ring (420) is greater than the outer diameter of the liquid outlet pipe (200), and the outer diameter of the connecting ring (420) is less than the inner diameter of the container opening.

3. The high purity solvent filling apparatus according to claim 2, characterized by: the abutting plate (430) is designed as a whole annular shape to form a seal for the container when the container opening is closed, and a sealing gasket (440) is connected to the bottom of the abutting plate (430), the sealing gasket (440) being made of rubber.

4. The high purity solvent filling apparatus according to claim 2, characterized by: An exhaust passage (431) is formed in the abutting plate (430), extends downwardly and penetrates the sealing gasket (440), and is covered by a cover plate (432) connected to the abutting plate (430) by a second spring (433).

5. The high purity solvent filling apparatus according to claim 2, characterized by: A gas pipe (340) is inserted into the cavity (330) and connected to a gas source.

6. The high purity solvent filling apparatus according to claim 2, characterized by: A fixing ring (120) is arranged above the abutting plate (430), connected to the outside of the liquid outlet pipe (200), and connected to the abutting plate (430) by a first spring (130).

7. The filling method of the high-purity solvent filling apparatus according to any one of claims 1 to 6, characterized by, The specific steps are as follows: S1, driving the liquid outlet pipe (200) to move downwardly; S11, releasing inert gas: when the liquid outlet pipe (200) moves downwardly and is inserted into the container, the driving member (400) moves downwardly synchronously with the liquid outlet pipe (200) and is abutted by the container mouth to move relatively with the liquid outlet pipe (200), at this time, the sliding block (451) slides in the helical groove (461) to drive the connecting rod (460) and the sealing plate (320) to rotate around the connecting rod (460), the outlet (321) starts to communicate with the partition (300), and the inert gas in the partition (300) is released; S12, releasing high-purity solvent: when the sealing plate (320) rotates by 180 degrees, at this time, the outlet (321) is again blocked by the partition (310), the gas releasing is ended, the sealing plate (320) again forms the sealing of the liquid outlet pipe (200), and with the continuous rotation of the sealing plate (320), at this time, the outlet (321) communicates with the tank (100) to start to release the high-purity solvent; S2, driving the liquid outlet pipe (200) to move upwardly and reset.

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