Anhydrous hydrogen fluoride production acid-like sample holding cabinet

Abstract

The utility model discloses a kind of sample cabinet of anhydrous hydrogen fluoride production acid sample, belong to chemical storage equipment technical field, sample cabinet includes sample box, cover plate, magnetic attraction pad, ventilation mechanism and leakage prevention mechanism, the sample box is double inner container structure, the ventilation mechanism has the air inlet and air outlet hole of being arranged on the sample box wall, anticorrosive fan is fixedly connected on inner wall, and with timer electric connection to realize periodical ventilation, the air outlet hole is sealed communication with ventilation pipeline, and is provided with the sealing cover of rotary handle.Between the utility model is integrated ventilation and leakage prevention two big systems, realizes the timely safe replacement of acid gas in cabinet and automatic collection, neutralization processing to accidental leakage acid liquid, solve the problem of gas accumulation and liquid corrosion, significantly improve the safety of high-risk chemical storage and the reliability of equipment.

Description

Technical Field

[0001] This utility model relates to the field of chemical storage equipment technology, and in particular to a sample retention cabinet for anhydrous hydrogen fluoride production acid samples. Background Technology

[0002] Anhydrous hydrogen fluoride, as an important basic chemical raw material, is used in the fluorochemical, refrigerant, pesticide, and pharmaceutical industries. Anhydrous hydrogen fluoride is extremely corrosive and toxic, has a low boiling point, and easily volatilizes at room temperature to produce acidic gases. During the production process of anhydrous hydrogen fluoride, it is necessary to regularly sample and analyze the product to ensure product quality. These production acid samples usually need to be stored in a special sample retention cabinet for short or medium term for subsequent quality traceability, re-inspection, or scientific research analysis.

[0003] Existing sample storage cabinets for such highly corrosive and volatile chemical samples typically focus on the airtightness of the cabinet and the application of corrosion-resistant materials. While these measures can isolate the samples from the external environment to some extent and prevent external contamination or internal gas leakage, some shortcomings have been exposed in actual use. Due to the volatile nature of anhydrous hydrogen fluoride, even a small amount of leakage or volatilization can gradually accumulate high concentrations of acidic gas inside the sealed cabinet. This high concentration of acidic gas not only poses a potential threat to non-corrosion-resistant components inside the cabinet and shortens the equipment's lifespan, but also releases the accumulated acidic gas instantly when operators open the cabinet door to retrieve or place samples, posing a serious threat to the health and safety of the operators. If the sample bottle is accidentally broken or leaks, existing sample storage cabinets lack an effective automatic collection and treatment mechanism. The leaked acid directly contacts the bottom of the cabinet, exacerbating corrosion and potentially causing even more serious pollution and safety accidents. Current sample storage cabinets lack effective structures for environmental control and safety protection in handling volatile gases and accidental liquid leaks generated during the storage of anhydrous hydrogen fluoride samples, and there are problems with safety hazards and rapid equipment wear and tear.

[0004] Therefore, this utility model proposes a sample retention cabinet for anhydrous hydrogen fluoride production acid samples to address the shortcomings of the prior art. Utility Model Content

[0005] In view of the existing technology, the sample retention cabinet for anhydrous hydrogen fluoride production acid samples lacks an integrated, active gas emission and liquid leakage handling mechanism, which leads to the inability to effectively deal with the accumulation and leakage of acidic gas inside the cabinet. The present invention aims to provide a sample retention cabinet for anhydrous hydrogen fluoride production acid samples with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a sample retention cabinet for anhydrous hydrogen fluoride production acid samples, including: a sample box, a cover plate, a magnetic pad, a ventilation mechanism, and a leak-proof mechanism.

[0007] The ventilation mechanism and the leak prevention mechanism are both integrated on the sample box. The ventilation mechanism has an air inlet and an air outlet on the wall of the sample box. An anti-corrosion fan is fixedly connected to the inner wall of the sample box and is directly opposite the air inlet. The ventilation mechanism also includes a ventilation duct that is sealed and connected to the air outlet.

[0008] Furthermore, the leak-proof mechanism has a collection trough integrally formed in the bottom of the sample box, the outside of the sample box is fixed to the acid treatment pool, and the collection trough and the acid treatment pool are connected by a flow pipe that passes through the wall of the sample box and is in communication.

[0009] Preferably, the ventilation mechanism further includes a timer, which is electrically connected to the corrosion-resistant fan via a wire to set and control the start and stop of the fan. This structure enables automated, periodic ventilation without human intervention, ensuring timely removal of harmful gases for safety while avoiding energy waste caused by prolonged fan operation. The ventilation mechanism also includes a sealing cover, which is pivotally connected to the outer wall of the sample box via a hinge and used to open and close the air outlet. This structure ensures reliable sealing of the ventilation path when the equipment is not in use for extended periods or is moved, preventing external moisture or impurities from entering. Furthermore, a rotating handle for easy lifting is fixed to the outer surface of the sealing cover, improving operational convenience.

[0010] Preferably, the leak-proof mechanism further includes multiple lifting columns, the bottom ends of which are vertically fixed to the inner bottom surface of the collection tank. Each lifting column has a fixed pad on its top surface for stabilizing the sample bottle, physically isolating the bottom of the sample bottle from any potential leakage liquid. This effectively prevents corrosion of the bottle due to immersion, thus avoiding the risk of secondary leakage. The sample box has a detachable placement plate inside. This placement plate is horizontally mounted above the leak-proof mechanism and serves to support the acid sample. As the main support platform, the placement plate isolates the sample from the leak-proof area below. Its detachable design also facilitates regular cleaning and maintenance of the leak-proof mechanism below.

[0011] Preferably, the outer surface of the cover is adhesively fixed with a hazard warning sign. This sign conspicuously and visually reminds operators and those nearby of the hazardous nature of the items stored inside, serving as a crucial measure to ensure a safe operating environment and prevent misoperation. The acid treatment tank is a detachable box filled with dry lime for neutralizing the acid. This detachable structure allows for easy and quick replacement of the entire tank after the dry lime becomes saturated and ineffective with the acid, ensuring the continued effectiveness of the leak treatment function.

[0012] Preferably, the sample box has a double-liner structure, and the inner liner layer that is in direct contact with the sample is made of a material resistant to anhydrous hydrogen fluoride corrosion. This double-layer structure provides double safety protection. Even if the inner liner suffers minor damage due to long-term use or accidental events, the outer liner can serve as a second line of defense, greatly improving the structural strength of the entire cabinet and the long-term reliability of leak prevention.

[0013] This utility model has the following beneficial effects: 1. This utility model solves the problem that existing sample retention cabinets, due to their sealed storage, cannot timely discharge acidic gases generated by sample volatilization, which accumulate inside the cabinet, creating safety hazards and corroding the equipment. It achieves the beneficial effect of safely replacing and discharging acidic gases from the cabinet in a timely and automatic manner, ensuring a safe environment inside the cabinet and slowing down equipment corrosion.

[0014] 2. This utility model solves the problem that existing sample retention cabinets lack effective liquid collection, isolation, and harmless treatment structures when samples are accidentally leaked, resulting in leaked acid soaking the sample bottles and corroding the cabinet body. This is achieved by setting up an anti-leakage mechanism consisting of a collection tank, a lifting column, a flow pipe, and an acid treatment pool with a built-in neutralizing agent.

[0015] 3. This utility model solves the problems of single function, separate structure, and incomplete protection of safety protection measures for hazardous chemicals in the prior art by integrating the ventilation mechanism and the leak prevention mechanism into the sample box. It achieves the beneficial effects of compact structure, high functional integration and strong safety protection system, and significantly improves the overall safety and reliability of high-risk chemical sample storage. Attached Figure Description

[0016] Figure 1 This is a perspective view of a sample retention cabinet for producing acid samples from anhydrous hydrogen fluoride, as proposed in this utility model. Figure 2 This is a front view of a sample retention cabinet for producing acid samples from anhydrous hydrogen fluoride, as proposed in this utility model. Figure 3 This is a top view of a sample retention cabinet for producing acid samples from anhydrous hydrogen fluoride, as proposed in this utility model. Figure 4 This is a cross-sectional view of the sample box of a sample retention cabinet for producing anhydrous hydrogen fluoride acid, as proposed in this utility model.

[0017] Legend: 1. Hazard label; 2. Sample box; 3. Magnetic pad; 4. Placement board; 5. Cover; 6. Ventilation mechanism; 601. Air inlet; 602. Air outlet; 603. Ventilation duct; 604. Corrosion-resistant fan; 605. Timer; 606. Sealing cover; 607. Hinge; 608. Rotating handle; 7. Leakage prevention mechanism; 701. Collection tank; 702. Flow pipe; 703. Acid treatment tank; 704. Fixing pad; 705. Elevating column. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0019] Example: Please refer to Figures 1 to 4 This utility model provides a sample retention cabinet for anhydrous hydrogen fluoride production acid samples, which aims to solve the problems of existing chemical sample retention cabinets lacking an integrated structure in handling volatile toxic gases and accidental liquid leaks, posing safety hazards and causing equipment corrosion.

[0020] like Figure 1 and Figure 2 As shown, a sample retention cabinet for anhydrous hydrogen fluoride production acid samples includes a sample box 2 and a cover 5 that can be opened and closed to cover the opening of the sample box 2. The sample box 2 serves as the main body of the entire device, used to contain the acid sample and integrate various functional mechanisms. The cover 5 is used to close the opening of the sample box 2. The sample box 2 has a double inner liner structure, and the inner liner layer that is in direct contact with the sample is made of a material resistant to anhydrous hydrogen fluoride corrosion. The outer surface of the cover 5 is fixed with a warning hazard label 1. To achieve a seal, magnetic pads 3 that attract each other are fixed at the corresponding positions of the opening edge of the sample box 2 and the edge of the cover 5. The sample retention cabinet also includes a ventilation mechanism 6 integrally set on the sample box 2 and a leak-proof mechanism 7 set at the bottom of the sample box 2. The ventilation mechanism 6 is used to exhaust the acid gas inside the sample box 2, and the leak-proof mechanism 7 is used to collect and handle accidentally leaked acid.

[0021] Please refer to Figure 1 , Figure 2 and Figure 3The ventilation mechanism 6 has an air inlet 601 and an air outlet 602 on the wall of the sample box 2. A corrosion-resistant fan 604 is fixedly connected to the inner wall of the sample box 2, and the corrosion-resistant fan 604 is directly opposite the air inlet 601 to drive external air into the interior of the sample box 2 through the air inlet 601. The ventilation mechanism 6 also includes a ventilation duct 603 that is sealed and connected to the air outlet 602. The ventilation duct 603 guides the gas inside the sample box 2 to the external space. To achieve automated control of the ventilation process, the ventilation mechanism 6 is also equipped with a timer 605. The timer 605 is electrically connected to the corrosion-resistant fan 604 through a wire. The anti-corrosion fan 604 is used to set and control the periodic start and stop of the anti-corrosion fan 604. When the ventilation mechanism 6 stops working, in order to ensure the overall airtightness of the sample box 2, the sealing cover 606 is pivotally connected to the outer wall of the sample box 2 via the hinge 607, which is used to open and close the air outlet 602. The outer surface of the sealing cover 606 is also fixedly connected to a rotating handle 608 that is easy for the operator to lift. This integrated ventilation structure that integrates air intake, exhaust, drive and control ensures that the trace amount of acidic gas generated inside the sample box 2 due to sample volatilization can be discharged in a timely and safe manner, avoiding the accumulation of dangerous gas.

[0022] To achieve automated collection and treatment of accidental acid leaks, please refer to... Figure 1 and Figure 4 The leak-proof mechanism 7 has multiple lifting columns 705 and flow tubes 702. The bottom end of the lifting column 705 is vertically fixed to the inner bottom surface of the collection tank 701. The structure raises the sample bottle to prevent the bottle from being soaked by leaked acid. Each lifting column 705 has a fixed pad 704 for stabilizing the sample bottle. The acid treatment tank 703 is a detachable box designed for easy replacement of the internal reactants. It is filled with dry lime for neutralizing the acid. To provide an independent sample placement surface, a placement plate 4 is detachably installed inside the sample box 2. The placement plate 4 is horizontally mounted above the leak-proof mechanism 7 and is used to hold the acid sample, thereby isolating the sample from the leak-proof area below.

[0023] Working principle: When the produced anhydrous hydrogen fluoride acid sample needs to be stored, it is placed on the placement plate 4 inside the sample box 2. The sample box 2 is then sealed and secured by the magnetic pads 3 on the lid 5 and the outer magnetic pads 3. A hazard sign 1 is installed on the outside of the lid 5 to warn of the presence of hazardous materials. The sample box 2 has a double-liner structure, and all parts in contact with the sample are made of materials resistant to anhydrous hydrogen fluoride corrosion. To ensure that any trace amounts of acidic gas accumulated inside are discharged outside, external air is drawn into the sample box 2 through the air inlet 601 and the corrosion-resistant fan 604 in the ventilation mechanism 6. The system then discharges trace amounts of acidic gas from the interior through the air outlet 602 and out of the operating room through the ventilation duct 603. The ventilation duct 603 is designed for detachable installation, ensuring that the air outlet 602 is sealed by the sealing cover 606 and hinge 607 when the equipment is not in use. At the same time, the timer 605 is used to turn on the fan for periodic discharge. To facilitate opening the sealing cover 606, the handle 608 is rotated to pull it up. Additionally, when the cover plate 5 needs to be opened, the fan speed can be adjusted through the display screen on the outside of the cover plate 5. The overall mechanism improves the safety and sealing of the equipment. Furthermore, when an acid sample accidentally leaks inside the sample box 2, it is collected and treated through the collection tank 701 in the leak prevention mechanism 7. At the same time, the lifting column 705 is used to prevent the leaked acid sample from hanging outside the bottle. To ensure that the sample bottle is stably fixed on the collection tank 701 and the lifting column 705, it is fixed with a fixing pad 704. When the acid sample leaks inside the collection tank 701, it is collected through the flow pipe 702 and sent to the acid treatment tank 703. An appropriate amount of dry lime is placed inside the acid treatment tank 703 to treat minor leaks and prevent them from remaining inside the collection tank 701 and affecting the internal equipment. Meanwhile, the trace amount of acidic gas generated by the leak is discharged through the ventilation mechanism 6. The overall mechanism improves the leakage control and equipment protection of the equipment.

[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sample retention cabinet for anhydrous hydrogen fluoride production acid samples, comprising a sample box (2), a cover plate (5) capable of being opened and closed to cover the opening of the sample box (2), wherein magnetic suction pads (3) are respectively fixed on the sample box (2) and the cover plate (5) to attract each other; characterized in that, The sample retention cabinet also includes a ventilation mechanism (6) installed on the sample box (2); and a leak-proof mechanism (7) installed at the bottom of the sample box (2); The ventilation mechanism (6) includes an air inlet (601) and an air outlet (602) on the wall of the sample box (2). A corrosion-resistant fan (604) is fixedly connected to the inner wall of the sample box (2), and the corrosion-resistant fan (604) is directly opposite the air inlet (601) to drive external air in. The ventilation mechanism (6) also includes a ventilation duct (603) that is sealed and connected to the air outlet (602). The leak prevention mechanism (7) includes a collection tank (701) integrally formed in the bottom of the sample box (2), an acid treatment pool (703) fixed to the outside of the sample box (2), and a flow pipe (702) passing through the wall of the sample box (2) and connecting the collection tank (701) and the acid treatment pool (703).

2. The sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The ventilation mechanism (6) also includes a timer (605), which is electrically connected to the anti-corrosion fan (604) via a wire to set and control the start and stop of the anti-corrosion fan (604).

3. The sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The ventilation mechanism (6) also includes a sealing cover (606), which is pivotally connected to the outer wall of the sample box (2) via a hinge (607) and used to open and close the air outlet (602). A rotating handle (608) for easy lifting is fixedly connected to the outer surface of the sealing cover (606).

4. The sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The leak prevention mechanism (7) also includes a plurality of lifting columns (705), the bottom end of which is vertically fixed to the inner bottom surface of the collection tank (701), and the top surface of each lifting column (705) is fixedly connected to a fixing pad (704) for stabilizing the sample bottle.

5. A sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The sample box (2) is detachably equipped with a placement plate (4), which is horizontally mounted above the leak-proof mechanism (7) and is used to support the acid sample.

6. The sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The outer surface of the cover plate (5) is fixed with a warning sign (1) by adhesive bonding.

7. A sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The acid treatment tank (703) is a detachable box, and its interior is filled with dry lime for neutralizing the acid solution.

8. A sample retention cabinet for anhydrous hydrogen fluoride production acid samples according to claim 1, characterized in that, The sample box (2) has a double inner liner structure, and the inner liner layer that is in direct contact with the sample is made of a material resistant to anhydrous hydrogen fluoride corrosion.

Images