Storage device for keeping stable concentration of volatile standard solution

Abstract

The utility model discloses a storage device for keeping the concentration of a volatile standard solution stable, and relates to the technical field of storage devices. The storage device for keeping the concentration of the volatile standard solution stable comprises a storage tank; the pressure relief cylinder fixedly communicates with the top end of the storage tank; and the sealing plate is arranged in the pressure relief cylinder in a sliding manner. According to the storage device capable of keeping the concentration of the volatile standard solution stable, by arranging the pressure relief cylinder, when the air pressure in the storage tank is increased, a sealing plate can be pushed to move upwards in the pressure relief cylinder, when an exhaust pipe communicates with the interior of the storage tank, redundant gas can be exhausted from the exhaust pipe, and at the moment, the pressure relief cylinder is pushed to move upwards; and the pressure in the storage tank is reduced, and the abutting spring recovers the elastic deformation to reset the sealing plate, so that the effect of automatic pressure relief in the storage tank is achieved, the situation that the storage tank is damaged due to too large internal pressure can be avoided, the safety of the storage tank is improved, and the service life of the storage tank is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a storage device technical field, specifically is a kind of storage device for keeping the concentration of volatile standard solution stable. BACKGROUND

[0002] Volatile standard solution refers to the substance with volatility is accurately weighed or taken, dissolved in appropriate solvent, and prepared into solution with certain concentration, used for calibrating instrument or as analysis standard, since it has the characteristic of volatilization, usually keep in storage device, and in the use process of solution, there will be gap in its storage device, which will cause the concentration of standard solution to reduce as solution volatilizes into the gap of storage device, and it is inconvenient for subsequent blending.

[0003] At present, in order to ensure that volatile standard solution can keep the stability of concentration when stored in storage tank, inert gas is usually injected in storage device, so that the gas pressure in storage device is kept at a certain threshold, so as to avoid the volatilization of solution in storage device, but when the external environment changes, the gas pressure in storage device is easy to increase further, so that the storage device is easy to be damaged, the service life of storage device is reduced and there is certain safety hazard. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a kind of storage device for keeping the concentration of volatile standard solution stable to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of storage device for keeping the concentration of volatile standard solution stable, comprising: storage tank;Pressure relief cylinder, fixedly communicated at the top end of storage tank;Sealing plate, slidingly arranged in the inside of pressure relief cylinder;Adjusting plate, slidingly arranged in the inside of pressure relief cylinder, the adjusting plate bottom end is provided with resistance spring, the other end of resistance spring and the top end of sealing plate are in contact;Exhaust pipe, fixedly communicated on the outer surface of pressure relief cylinder.

[0006] Preferably, it further includes: gas inlet pipe;Blending tank, with gas inlet pipe top end fixedly communicated;Mounting ring, is arranged in the inside of blending tank, and the mounting ring bottom end is rotatably connected with closure plate.

[0007] Preferably, the inside of blending tank is provided with connecting rod, the bottom end of connecting rod is fixedly provided with reset spring, the other end of reset spring and the top end of closure plate are fixedly provided.

[0008] Preferably, the top end of blending tank is fixedly provided with pressure gauge, the outer surface of sealing plate is provided with sealing ring, and the outer surface of sealing ring is in contact with the inner surface of pressure relief cylinder.

[0009] Preferably, an adjusting screw is rotatably connected inside the pressure relief cylinder, and the outer surface of the adjusting screw is threadedly connected to the inside of the adjusting plate.

[0010] Preferably, the pressure relief cylinder has a positioning groove inside, the outer surface of the adjusting plate is fixedly provided with a positioning block, the outer surface of the positioning block is slidably disposed with the inside of the positioning groove, a limit ring is fixedly provided inside the pressure relief cylinder, and the bottom end of the sealing plate abuts against the top end of the limit ring.

[0011] Preferably, a knob is fixedly connected to the top of the adjusting screw, and a dial is fixedly provided at the top of the pressure relief cylinder.

[0012] This invention provides a storage device for maintaining a stable concentration of volatile standard solutions, which has the following advantages:

[0013] (1) By setting up a pressure relief cylinder, when the gas pressure inside the storage tank increases, the sealing plate can be pushed to move upward in the pressure relief cylinder. When the exhaust pipe is connected to the inside of the storage tank, the excess gas will be discharged from the exhaust pipe. At this time, the pressure inside the storage tank decreases and the pressure spring restores its elastic deformation to reset the sealing plate, thus realizing the effect of automatic pressure relief inside the storage tank. This can prevent the storage tank from being damaged due to excessive internal pressure, and improve the safety and service life of the storage tank.

[0014] (2) In this utility model, when the pressure in the storage tank decreases, the inert gas in the mixing tank will push open the sealing plate and enter the storage tank in order to balance the pressure. After the pressure of the two is balanced, the reset spring will restore its elastic deformation and pull the sealing plate to close. At this time, the pressure gauge displays the pressure in the storage tank, which is convenient for the staff to perform pressurization operation, avoids the solution from evaporating, and helps to maintain the stability of the solution concentration. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the internal structure of the pressure relief cylinder in this utility model;

[0017] Figure 3 This is a schematic diagram of the internal structure of the mixing tank in this practical application;

[0018] Figure 4 This is an exploded view of the structure between the mounting ring and the sealing plate in this utility model.

[0019] In the diagram: 1. Storage tank; 2. Pressure relief cylinder; 3. Sealing plate; 4. Adjusting plate; 5. Pressure spring; 6. Exhaust pipe; 7. Adjusting screw; 8. Limit ring; 9. Positioning groove; 10. Positioning block; 11. Gas filling pipe; 12. Mixing tank; 13. Mounting ring; 14. Sealing plate; 15. Connecting rod; 16. Return spring; 17. Pressure gauge; 18. Knob; 19. Dial; 20. Sealing ring. Detailed Implementation

[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0021] This utility model provides a technical solution: Referring to 1-4, in this embodiment, a storage device for maintaining a stable concentration of a volatile standard solution includes: a storage tank 1; a pressure relief cylinder 2, fixedly connected to the top of the storage tank 1; a sealing plate 3, slidably disposed inside the pressure relief cylinder 2; an adjusting plate 4, slidably disposed inside the pressure relief cylinder 2, with a pressure-resistant spring 5 at the bottom of the adjusting plate 4, the other end of the pressure-resistant spring 5 abutting against the top of the sealing plate 3; and an exhaust pipe 6, fixedly connected to the outer surface of the pressure relief cylinder 2. The sealing plate 3 blocks the gas inside the storage tank 1, preventing inert gas from flowing out of the exhaust pipe 6 under normal conditions. The pressure-resistant spring 5 provides a continuous force to the sealing plate 3, ensuring that the pressure in the storage tank 1 reaches a certain value before the sealing plate 3 can be moved to release pressure.

[0022] It also includes: a gas filling pipe 11; a mixing tank 12, which is fixedly connected to the top of the gas filling pipe 11; and a mounting ring 13, which is set inside the mixing tank 12, and the bottom end of the mounting ring 13 is rotatably connected to a sealing plate 14. By setting the sealing plate 14, the storage tank 1 and the mixing tank 12 can be in a closed state when the tension is the same. By setting the mixing tank 12, the gas pressure in the storage tank 1 can be adjusted when the pressure decreases, so as to avoid the solution evaporation caused by the pressure decreasing too quickly.

[0023] The mixing tank 12 is equipped with a connecting rod 15. A return spring 16 is fixedly installed at the bottom end of the connecting rod 15. The other end of the return spring 16 is fixedly installed at the top end of the sealing plate 14. By setting the return spring 16, a pulling force can be applied to the sealing plate 14. When the pressure is balanced, the sealing plate 14 can be dragged to reset.

[0024] A pressure gauge 17 is fixedly installed at the top of the mixing tank 12. A sealing ring 20 is provided on the outer surface of the sealing plate 3. The outer surface of the sealing ring 20 abuts against the inner surface of the pressure relief cylinder 2. By setting the sealing ring 20, the sealing performance of the sealing plate 3 can be improved, making it less prone to air leakage.

[0025] The pressure relief cylinder 2 is rotatably connected to an adjusting screw 7. The outer surface of the adjusting screw 7 is threadedly connected to the inside of the adjusting plate 4. By changing the position of the adjusting plate 4, the force exerted by the pressure relief spring 5 on the sealing plate 3 can be changed, thereby changing the pressure relief threshold and improving its practicality.

[0026] The pressure relief cylinder 2 has a positioning groove 9 inside, and a positioning block 10 is fixedly installed on the outer surface of the adjusting plate 4. The outer surface of the positioning block 10 is slidably installed in the positioning groove 9. A limit ring 8 is fixedly installed inside the pressure relief cylinder 2. The bottom end of the sealing plate 3 abuts against the top end of the limit ring 8. By setting the positioning groove 9 and the positioning block 10, the adjusting plate 4 can be limited to prevent it from being unable to adjust due to the rotation of the adjusting screw 7. By setting the limit ring 8, the range of motion of the sealing plate 3 can be limited, thereby preventing it from falling out of the pressure relief cylinder 2.

[0027] A knob 18 is fixedly connected to the top of the adjusting screw 7, and a scale 19 is fixedly installed on the top of the pressure relief cylinder 2. The adjusting screw 7 can be easily rotated by the knob 18, and the position of the adjusting plate 4 can be precisely adjusted by the scale 19.

[0028] This invention provides a storage device for maintaining a stable concentration of volatile standard solutions. The specific working principle is as follows:

[0029] When the air pressure inside storage tank 1 increases due to external environmental influences, the air pressure pushes the sealing plate 3 upward within the pressure relief cylinder 2. When the exhaust pipe 6 connects to the inside of storage tank 1, excess gas is discharged from the exhaust pipe 6. At this time, the pressure inside storage tank 1 decreases, and the pressure spring 5 returns to its elastic deformation, resetting the sealing plate 3 to maintain a stable air pressure inside storage tank 1. When the external environment returns to normal, the air pressure inside storage tank 1 decreases. To balance the pressure, the inert gas in the mixing tank 12 pushes open the sealing plate 14 and enters storage tank 1. After the pressures of both are balanced, the return spring 16 returns to its elastic deformation and pulls the sealing plate 14 to close. At this time, the pressure gauge 17 displays the pressure in storage tank 1, facilitating pressurization operations by staff.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A storage device for maintaining the concentration of a volatile standard solution stable, characterized in that: Include: Storage tank (1); Pressure relief cylinder (2), fixed communication in the top end of storage tank (1); Sealing plate (3), slidingly disposed in the inside of pressure relief cylinder (2); Adjusting plate (4), slidingly disposed in the inside of pressure relief cylinder (2), the bottom end of the adjusting plate (4) is provided with abutting spring (5), the other end of the abutting spring (5) is in abutment with the top end of sealing plate (3); Exhaust pipe (6), fixed communication on the outer surface of pressure relief cylinder (2).

2. The storage device of claim 1, wherein: Also includes: Gas filling pipe (11); Harmonization tank (12), fixed communication with the top end of gas filling pipe (11); Mounting ring (13), disposed in the inside of harmonization tank (12), and the bottom end of the mounting ring (13) is rotatably connected with the closed plate (14).

3. A storage device for maintaining the concentration of a volatile standard solution according to claim 2, characterized in that: The inside of the harmonization tank (12) is provided with connecting rod (15), the bottom end of the connecting rod (15) is fixedly provided with reset spring (16), the other end of the reset spring (16) is fixedly provided with the top end of the closed plate (14).

4. The storage device of claim 3, wherein: The top end of the harmonization tank (12) is fixedly provided with pressure gauge (17), the outer surface of the sealing plate (3) is provided with sealing ring (20), the outer surface of the sealing ring (20) is in abutment with the inner surface of pressure relief cylinder (2).

5. The storage device of claim 1, wherein: The inside of the pressure relief cylinder (2) is rotatably connected with adjusting screw rod (7), the outer surface of the adjusting screw rod (7) is threadedly connected with the inside of adjusting plate (4).

6. A storage device for maintaining the concentration of a volatile standard solution according to claim 5, characterized in that: The inside of the pressure relief cylinder (2) is provided with positioning groove (9), the outer surface of the adjusting plate (4) is fixedly provided with positioning block (10), the outer surface of the positioning block (10) is slidingly provided with the inside of positioning groove (9), the inside of the pressure relief cylinder (2) is fixedly provided with limiting ring (8), the bottom end of the sealing plate (3) is in abutment with the top end of limiting ring (8).

7. A storage device for maintaining the concentration of a volatile standard solution according to claim 6, characterized in that: The top end of the adjusting screw rod (7) is fixedly connected with knob (18), the top end of the pressure relief cylinder (2) is fixedly provided with dial (19).

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