Perfluoropolyether liquid waste storage tank

Abstract

The utility model relates to the technical field of chemical equipment, and discloses a perfluoropolyether liquid waste storage tank which comprises a storage tank body and a sealing mechanism, and the storage tank body comprises high-performance fluororubber located on the innermost layer, reinforced fiber cloth located on the middle layer and glass fiber reinforced plastic located on the outermost layer. According to the perfluoropolyether liquid waste storage tank, the corrosion resistance is remarkably improved, corrosion of PFPE waste to the storage tank body is effectively prevented through the high-performance fluororubber on the inner layer, the service life of the storage tank body is greatly prolonged, the sealing performance is more reliable, double sealing is achieved through the design of the double O-shaped rings, the leakage risk is greatly reduced, and meanwhile, the service life of the storage tank is prolonged. The supporting frame is made of a light aluminum alloy material, the overall weight is reduced, the carrying and transporting burden is reduced, the safety performance of the storage tank is remarkably improved, and by monitoring the pressure and temperature changes in the storage tank body in real time, abnormal conditions can be found and handled in time, and the safety of operators is guaranteed.

Description

Technical Field

[0001] This application relates to the field of chemical equipment technology, specifically a perfluoropolyether liquid waste storage tank. Background Technology

[0002] Perfluoropolyether (PFPE) is a lubricant with excellent chemical and thermal stability, widely used in semiconductor manufacturing, precision machinery, and other fields. However, its waste disposal has become a significant environmental and technical challenge. Currently, most waste storage tanks on the market are made of metal, which, while strong, is susceptible to corrosion when storing PFPE waste for extended periods, increasing the risk of leakage. Furthermore, traditional storage tank designs often neglect safety, sealing, and monitoring functions, failing to meet the high environmental and safety standards required by modern industry.

[0003] In the existing technology, metal storage tanks, plastic storage tanks, or composite material storage tanks are usually used to store perfluoropolyether liquid waste.

[0004] However, metal, plastic, and composite material storage tanks all have their own problems. While metal tanks are strong, they are susceptible to corrosion, increasing the risk of leakage; plastic tanks have good corrosion resistance, but low strength and easy deformation; composite material tanks have good overall performance, but are expensive, difficult to manufacture, and their sealing performance is still not ideal. Therefore, existing waste storage tanks cannot fully meet the requirements of modern industry for the safety, reliability, and economy of storing perfluoropolyether waste. To address this, a perfluoropolyether liquid waste storage tank is proposed. Utility Model Content

[0005] To address the shortcomings of existing technologies, this application provides a perfluoropolyether liquid waste storage tank, which improves the corrosion resistance of the storage tank, extends its service life, improves the sealing performance of the storage tank, and prevents waste leakage.

[0006] To achieve the above objectives, this application provides the following technical solution: a perfluoropolyether liquid waste storage tank, comprising a storage tank body and a sealing mechanism. The storage tank body comprises a high-performance fluororubber layer in the innermost layer, a reinforcing fiber cloth layer in the middle layer, and a fiberglass layer in the outermost layer. The sealing mechanism comprises a cap threadedly connected to the top of the storage tank body. A pressure gauge is installed at the top of the cap, and a temperature sensor is installed at the bottom of the cap. O-rings are fixedly connected to both ends of the threaded lines on the surface of the cap.

[0007] Through the above solutions, its corrosion resistance is significantly improved. The high-performance fluororubber inner layer effectively prevents PFPE waste from corroding the storage tank body, extending the service life of the storage tank body. The sealing performance is more reliable. The cap adopts a double O-ring design, which achieves double sealing and greatly reduces the risk of leakage. The overall weight is reduced. The support frame is made of lightweight aluminum alloy material, which reduces the burden of handling and transportation. The safety performance is significantly improved. By monitoring the pressure and temperature changes inside the storage tank body in real time, abnormal situations can be detected and dealt with in a timely manner, ensuring the safety of operators.

[0008] Furthermore, the high-performance fluororubber and reinforcing fiber cloth are combined using a hot-pressing molding process, and the reinforcing fiber cloth and fiberglass are combined using a layer-by-layer casting method or a mechanical pressing process to form an integrated composite structure.

[0009] The above scheme combines hot-press molding technology to ensure a close match between the corrosion resistance of high-performance fluororubber and the strength of reinforcing fiber cloth. By using a layer-by-layer casting method or mechanical lamination process, a seamless overall structure can be formed between the reinforcing fiber cloth and fiberglass, which is suitable for the production of the outer layer of large-capacity tanks. This ensures a strong bond between the layers and meets the storage requirements of corrosion resistance, pressure resistance and long service life.

[0010] Furthermore, an insulation layer, which is polyurethane foam, is bonded to the outer surface of the fiberglass.

[0011] The above solution, by setting up an insulation layer, can reduce the impact of temperature fluctuations on the waste inside the storage tank and improve storage stability.

[0012] Furthermore, an automatic pressure relief valve is installed at the top of the cap.

[0013] With the above solution, when the pressure inside the storage tank exceeds the set value, the automatic pressure relief valve can be automatically opened to release excess gas, further improving safety.

[0014] Furthermore, a leak-proof tray is fixedly connected to the bottom surface of the storage tank body.

[0015] With the above solution, in the event of an accidental leak, the leaked material can be quickly collected using a leak-proof tray to prevent environmental pollution.

[0016] Furthermore, the bottom surface of the leak-proof tray is fixedly connected to four support frames, which are made of 6061-T6 aluminum alloy.

[0017] By using the above solution and limiting the material of the support frame, the overall weight of the device can be reduced while maintaining a certain level of strength.

[0018] Furthermore, each of the support frames is equipped with a roller on its bottom surface. The roller has a diameter of 100mm and a load-bearing capacity of 500kg.

[0019] The above solution, by adding rollers, enables the device to move flexibly and is easy to transport.

[0020] Furthermore, two symmetrical lifting rings are fixedly connected to the outer surface of the storage tank body, and the lifting rings are made of Q235 steel.

[0021] The above solution facilitates the hoisting and transportation of the device by setting up lifting rings. By limiting the material of the lifting rings, its maximum load-bearing capacity can be guaranteed to reach 1000kg.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0023] This perfluoropolyether liquid waste storage tank features significantly improved corrosion resistance. The inner high-performance fluororubber layer effectively prevents PFPE waste from eroding the tank body, greatly extending its service life. Its sealing performance is more reliable, employing a double O-ring design for dual sealing, significantly reducing the risk of leakage. Simultaneously, the support frame is made of lightweight aluminum alloy, reducing overall weight and the burden during handling and transportation. The tank's safety performance is significantly improved; by monitoring pressure and temperature changes within the tank in real time, abnormal situations can be detected and addressed promptly, ensuring the safety of operators. Attached Figure Description

[0024] Figure 1 This is a top view of the overall structure of this application.

[0025] Figure 2 This is a schematic diagram of the overall rear view structure of this application;

[0026] Figure 3 This is a partial cross-sectional view of the structure of this application;

[0027] Figure 4 This is a schematic diagram of the overall structure of the cap in this application.

[0028] In the picture:

[0029] 1. Storage tank body; 101. High-performance fluororubber; 102. Reinforcing fiber cloth; 103. Fiberglass; 104. Insulation layer; 2. Sealing mechanism; 201. Cover; 202. Pressure gauge; 203. Temperature sensor; 204. O-ring; 205. Automatic pressure relief valve; 3. Leak-proof tray; 4. Support frame; 5. Rollers; 6. Lifting ring. Detailed Implementation

[0030] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0031] Please see Figure 1 , Figure 2 and Figure 3 This embodiment provides a perfluoropolyether liquid waste storage tank, comprising a tank body 1 and a sealing mechanism 2. The tank body 1 includes a high-performance fluororubber 101 as the innermost layer, a reinforcing fiber cloth 102 as the middle layer, and a fiberglass 103 as the outermost layer. The high-performance fluororubber 101 and the reinforcing fiber cloth 102 are joined by a hot-press molding process, while the reinforcing fiber cloth 102 and the fiberglass 103 are joined by a layer-by-layer casting method or a mechanical lamination process to form an integrated composite structure. The hot-press molding process ensures the corrosion resistance of the high-performance fluororubber 101. The performance and strength of the reinforcing fiber cloth 102 are closely matched. By adopting a layer-by-layer casting method or mechanical pressing process, a seamless integral structure can be formed between the reinforcing fiber cloth 102 and the fiberglass 103. This is suitable for the production of the outer layer of large-capacity tanks. This ensures a strong bond between the layers and meets the storage requirements of corrosion resistance, pressure resistance and long service life. The outer surface of the fiberglass 103 is bonded with a heat insulation layer 104, which is made of polyurethane foam. By setting the heat insulation layer 104, the impact of temperature fluctuations on the waste inside the storage tank body 1 can be reduced, and the storage stability can be improved.

[0032] It should be noted that the high-performance fluororubber 101 is 5mm thick and has excellent corrosion resistance, which can effectively prevent PFPE waste from corroding the storage tank body 1. The reinforcing fiber cloth 102 is 3mm thick and can enhance the structural strength and rigidity of the storage tank body 1. The fiberglass 103 is 8mm thick and provides an additional protective layer to prevent external physical damage.

[0033] Please see Figure 2 , Figure 3 and Figure 4The sealing mechanism 2 includes a cap 201 threadedly connected to the top of the storage tank body 1. A pressure gauge 202 is installed on the top of the cap 201. The pressure gauge 202 is preferably a Wika P53U with a range of 0-600 kPa and an accuracy of ±1%. A temperature sensor 203 is installed at the bottom of the cap 201. The temperature sensor 203 is preferably a Honeywell TA1N with a measurement range of -40℃ to 150℃ and an accuracy of ±0.5℃. The pressure gauge 202 and the temperature sensor 203 are connected to an external display via cables, which can display the status inside the tank in real time. O-rings 204 are fixedly connected to both ends of the threaded lines on the surface of the cap 201. The storage tank body 1 and the sealing mechanism 2 are double-sealed through double O-rings 204, which optimizes the sealing effect. An automatic pressure relief valve 205 is installed on the top of the cap 201. When the pressure inside the storage tank body 1 exceeds the set value, the automatic pressure relief valve 205 can be automatically opened to release excess gas and further improve safety.

[0034] Please see Figure 1 , Figure 2 and Figure 3 The bottom surface of the storage tank body 1 is fixedly connected to a leak-proof tray 3. In the event of an accidental leak, the leak-proof tray 3 can quickly collect the leaked material to prevent environmental pollution. The bottom surface of the leak-proof tray 3 is fixedly connected to four support frames 4. The support frames 4 are made of 6061-T6 aluminum alloy. By limiting the material of the support frames 4, the overall weight of the device can be reduced while maintaining a certain strength. Each support frame 4 is equipped with a roller 5 on its bottom surface. The roller 5 has a diameter of 100mm and a load-bearing capacity of 500kg. The roller 5 allows the device to move flexibly and is easy to handle. The outer surface of the storage tank body 1 is fixedly connected to two symmetrical lifting rings 6. The lifting rings 6 are made of Q235 steel. The lifting rings 6 facilitate the lifting and handling of the device. By limiting the material of the lifting rings 6, their maximum load-bearing capacity can be guaranteed to reach 1000kg.

[0035] In this embodiment, a perfluoropolyether liquid waste storage tank exhibits significantly improved corrosion resistance. The inner high-performance fluororubber 101 effectively prevents PFPE waste from eroding the tank body 1, extending its service life. The sealing performance is more reliable, and the cap 201 employs a double O-ring 204 design, achieving double sealing and greatly reducing the risk of leakage. The overall weight is reduced, and the support frame 4 is made of lightweight aluminum alloy, reducing the burden of handling and transportation. Safety performance is significantly improved. By monitoring pressure and temperature changes within the tank body 1 in real time, abnormal situations can be detected and addressed promptly, ensuring the safety of operators.

[0036] It should be noted that the replaceable parts in this device include pressure gauge 202, temperature sensor 203, O-ring 204, and roller 5. It is recommended to replace O-ring 204 every six months, pressure gauge 202 and temperature sensor 203 should be calibrated once a year, and roller 5 should be replaced in time if it is damaged or severely worn.

[0037] The working principle of the above embodiment is as follows: After the perfluoropolyether waste is injected into the storage tank body 1, the cap 201 is tightened and locked. The double O-rings 204 ensure the seal between the cap 201 and the storage tank body 1. The waste stored in the storage tank body 1 will not cause corrosion to the storage tank body 1 because the high-performance fluororubber 101 of the inner layer has excellent corrosion resistance. The pressure gauge 202 and temperature sensor 203 of the cap 201 monitor the pressure and temperature changes in the storage tank body 1 in real time and transmit them to an external display via cable. The operator can check the status of the storage tank body 1 at any time. If any abnormality is found, measures can be taken in time to ensure safety. The support frame 4 and rollers 5 make the storage tank body 1 easy to move, and the lifting ring 6 facilitates hoisting and handling, improving the convenience of operation. Before use, the storage tank body 1 and the sealing mechanism 2 should be checked to ensure that there is no damage or wear. At the same time, during handling and transportation, the storage tank body 1 should be kept stable to avoid violent vibration or impact.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0039] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A storage tank for perfluoropolyether liquid waste, comprising a storage tank body (1) and a sealing mechanism (2), characterized in that: The storage tank body (1) includes a high-performance fluororubber (101) in the innermost layer, a reinforcing fiber cloth (102) in the middle layer, and a fiberglass (103) in the outermost layer. The sealing mechanism (2) includes a cap (201) threaded to the top of the storage tank body (1). A pressure gauge (202) is installed at the top of the cap (201), and a temperature sensor (203) is installed at the bottom of the cap (201). O-rings (204) are fixedly connected to both ends of the thread on the surface of the cap (201).

2. The perfluoropolyether liquid waste storage tank according to claim 1, characterized in that: The high-performance fluororubber (101) and the reinforcing fiber cloth (102) are combined by hot pressing molding process, and the reinforcing fiber cloth (102) and the fiberglass (103) are combined by layer-by-layer casting method or mechanical pressing process to form an integrated composite structure.

3. The perfluoropolyether liquid waste storage tank according to claim 1, characterized in that: The outer surface of the fiberglass (103) is bonded with a thermal insulation layer (104), which is polyurethane foam.

4. The perfluoropolyether liquid waste storage tank according to claim 1, characterized in that: An automatic pressure relief valve (205) is installed at the top of the cover (201).

5. The perfluoropolyether liquid waste storage tank according to claim 1, characterized in that: A leak-proof tray (3) is fixedly connected to the bottom surface of the storage tank body (1).

6. The perfluoropolyether liquid waste storage tank according to claim 5, characterized in that: The bottom surface of the leak-proof tray (3) is fixedly connected to four support frames (4), which are made of 6061-T6 aluminum alloy.

7. A perfluoropolyether liquid waste storage tank according to claim 6, characterized in that: Each of the support frames (4) is equipped with a roller (5) on its bottom surface. The roller (5) has a diameter of 100 mm and a load-bearing capacity of 500 kg.

8. The perfluoropolyether liquid waste storage tank according to claim 1, characterized in that: Two symmetrical lifting rings (6) are fixedly connected to the outer surface of the storage tank body (1), and the lifting rings (6) are made of Q235 steel.

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