A pressure vessel for containing a corrosive liquid

Abstract

This utility model discloses a pressure vessel for holding corrosive liquids, including a container body, with a feed hopper connected to the top of the feed inlet of the container body. This utility model achieves docking and separation of the feed hopper and ...

Description

Technical Field

[0001] This utility model relates to the field of pressure vessel technology, specifically a pressure vessel for holding corrosive liquids. Background Technology

[0002] In industries such as chemical, pharmaceutical, and metallurgy, the storage and transfer of corrosive liquids (such as strong acids, strong alkalis, and strong oxidizing solutions) require specialized pressure vessels. The core performance characteristics of these devices lie in their corrosion resistance and sealing reliability, while also ensuring operational safety and efficiency. However, existing pressure vessels still face numerous unresolved issues in practical applications. From the perspective of sealing structure design, traditional pressure vessel inlet caps mostly adopt manual tightening or simple mechanical fastening structures. Manual tightening relies on the operator's experience, which is not only time-consuming per operation, but also makes it difficult to ensure uniform tightening force each time. This can easily lead to leakage of corrosive liquids due to loose sealing surfaces, causing material loss and potentially leading to equipment corrosion, environmental pollution, or even personnel safety accidents. Simple mechanical fastening structures generally suffer from insufficient locking stability. After equipment transportation, internal pressure fluctuations, or long-term use, the fastening components are prone to loosening, further increasing the risk of seal failure.

[0003] In terms of ease of operation and safety, the opening and closing of existing equipment often requires direct manual contact with the components around the feed inlet. Since corrosive liquids may remain on the feed inlet and the surface of the cap, operators are prone to chemical burns during contact, and even with protective equipment, it is difficult to completely avoid the risk. At the same time, for large-capacity pressure vessels, the cap is heavy, and manual turning or handling is labor-intensive. Improper operation can easily cause the cap to be bumped and deformed, affecting the subsequent sealing effect.

[0004] Therefore, a pressure vessel for holding corrosive liquids is needed to solve the aforementioned problems. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide a pressure vessel for holding corrosive liquids, which has the advantages of high sealing reliability, high degree of automation and strong safety. It solves the problems of uneven sealing fit, easy leakage, low efficiency due to reliance on manual operation and high risk of personnel contact with corrosive parts in similar pressure vessels in the prior art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pressure vessel for holding corrosive liquids, comprising a container body, a feed hopper connected to the top of the feed inlet of the container body, a flow guide liner made of corrosion-resistant material fixedly connected to the top of the feed hopper, a sealing groove assembly provided on the top of the flow guide liner, a sealing ring assembly engaged inside the sealing groove assembly, a support frame fixedly connected to the top of the feed hopper, a plurality of annularly evenly arranged limiting blocks fixedly connected to the outer side of the feed hopper, a locking ring rotatably connected to the inner side of the plurality of limiting blocks, and the locking ring being located outside the flow guide liner, a hinge fixedly connected to the top of the support frame, a tilting motor fixedly connected to one side of the hinge, the output end of the tilting motor passing through the hinge and fixedly connected to a cover through a coupling, the cover cooperating with the flow guide liner, a plurality of annularly evenly arranged snap-fit ​​blocks fixedly connected to the outer side of the cover, a plurality of evenly arranged snap-fit ​​grooves provided on the top of the locking ring, and the plurality of snap-fit ​​grooves cooperating with the plurality of snap-fit ​​blocks respectively.

[0007] As a preferred embodiment of this utility model, the top of the support frame is symmetrically fixedly connected with a fixing block, the surface of the fixing block is hinged with an electric push rod, the output end of the electric push rod is hinged with a connecting piece, and the other side of the connecting piece is fixedly connected to a locking ring by bolts.

[0008] In a preferred embodiment of this utility model, a support block is fixedly connected to the top of the support frame, a buffer is fixedly connected to the surface of the support block, and the buffer is used in conjunction with the connector. A limit post is fixedly connected to the surface of the support block, and the limit post is used in conjunction with the connector.

[0009] As a preferred embodiment of this invention, the top of the support frame is symmetrically and fixedly connected with auxiliary wheels, and the auxiliary wheels are in a rolling connection with the locking ring.

[0010] As a preferred embodiment of this utility model, the top of the guide liner is provided with an installation groove, and a touch switch is fixedly connected to the top of the installation groove, and the touch switch is electrically connected to the flipping motor.

[0011] As a preferred embodiment of this invention, the top of the cover is symmetrically fixedly connected with a limiting block, and the limiting block is used in conjunction with a locking ring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model achieves docking and separation of the snap-fit ​​groove and snap-fit ​​block through the coordinated cooperation of the container body, feeding hopper, guide liner, sealing groove assembly, sealing ring assembly, support frame, limiting block, locking ring, hinge, flip motor, cap, snap-fit ​​block and snap-fit ​​groove. Combined with the flip motor driving the cap to automatically flip and close, it replaces the traditional pressure vessel sealing and opening method that relies on manual operation. This not only greatly improves operating efficiency and avoids operators from directly contacting corrosive liquid-related parts to reduce safety hazards, but also ensures the sealing fit between the cap and the guide liner through the precise cooperation of multiple components, effectively reducing the risk of corrosive liquid leakage. It solves the problems of low efficiency, poor safety and insufficient sealing reliability of manual operation in the prior art.

[0013] 2. This utility model utilizes a linkage design involving an electric push rod, connectors, support blocks, buffers, limit posts, auxiliary wheels, touch switches, limiting blocks, and other core components. The electric push rod drives the locking ring to rotate, achieving automatic docking and separation of the locking groove and the locking block. The buffer absorbs the impact force of component movement, the limit post limits the movement trajectory, the auxiliary wheel reduces the rotational resistance of the locking ring, the touch switch enables automatic start / stop control of the flip motor, and the limiting block prevents the locking ring from accidentally rotating. This optimizes equipment performance from multiple dimensions, including component wear, operational stability, energy consumption control, and sealing safety. Compared to existing technologies where pressure vessels are prone to short service life and high maintenance costs due to component collision wear, movement misalignment, and motor overload, this utility model significantly improves the reliability and durability of the equipment under long-term corrosive liquid storage conditions, reduces subsequent maintenance costs, and further ensures consistent sealing performance through automated closed-loop control. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial cross-sectional perspective view of the feed hopper of this utility model; Figure 3 This is a three-dimensional schematic diagram of the feed hopper when the cap of this utility model is opened; Figure 4 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0015] In the diagram: 1. Container body; 2. Feed hopper; 3. Inner liner; 4. Sealing groove assembly; 5. Sealing ring assembly; 6. Support frame; 7. Limiting block; 8. Locking ring; 9. Hinge; 10. Tilting motor; 11. Cover; 12. Snap-fit ​​block; 13. Snap-fit ​​groove; 14. Fixing block; 15. Electric push rod; 16. Connecting piece; 17. Supporting block; 18. Buffer; 19. Limiting post; 20. Auxiliary wheel; 21. Point contact switch; 22. Limiting block. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 4 As shown, this utility model provides a pressure vessel for holding corrosive liquids, including a container body 1. A feed hopper 2 is connected to the top of the feed inlet of the container body 1. A guide liner 3 made of corrosion-resistant material is fixedly connected to the top of the feed hopper 2. A sealing groove assembly 4 is provided on the top of the guide liner 3. A sealing ring assembly 5 is engaged inside the sealing groove assembly 4. A support frame 6 is fixedly connected to the top of the feed hopper 2. Multiple annularly arranged limiting blocks 7 are fixedly connected to the outer side of the feed hopper 2. The inner sides of the multiple limiting blocks 7 are rotatably connected to the same locking mechanism. Ring 8, and locking ring 8 is located on the outside of the inner liner 3. The top of the support frame 6 is fixedly connected to a hinge 9. A flip motor 10 is fixedly connected to one side of the hinge 9. The output end of the flip motor 10 passes through the hinge 9 and is fixedly connected to a cover 11 through a coupling. The cover 11 is used in conjunction with the inner liner 3. Multiple ring-shaped evenly arranged snap-fit ​​blocks 12 are fixedly connected to the outside of the cover 11. Multiple evenly arranged snap-fit ​​grooves 13 are opened on the top of the locking ring 8, and the multiple snap-fit ​​grooves 13 are used in conjunction with the multiple snap-fit ​​blocks 12 respectively.

[0018] It should be noted that the corrosion-resistant material of the inner liner 3 can be, but is not limited to, Hastelloy (such as C276, B2, etc., which is resistant to strong corrosive media and is suitable for various acid and alkali environments), titanium and titanium alloys (which have excellent corrosion resistance, especially against seawater, chlor-alkali, organic acid and other corrosion) or 316L stainless steel (which is resistant to ordinary acid and alkali corrosion and salt spray corrosion, and has a relatively low cost, and is suitable for medium corrosion conditions).

[0019] refer to Figure 3 The top of the support frame 6 is symmetrically fixed with a fixing block 14. An electric push rod 15 is hinged to the surface of the fixing block 14. A connector 16 is hinged to the output end of the electric push rod 15. The other side of the connector 16 is fixedly connected to the locking ring 8 by bolts. That is, the two electric push rods 15 move alternately. When one is in the retracted state, the other is in the extended state.

[0020] As a technical optimization of this utility model, through the cooperation of the fixing block 14, the electric push rod 15 and the connector 16, the alternating retraction and extension of the two electric push rods 15 drive the locking ring 8 to rotate stably around the limiting block 7, thereby achieving precise docking and separation between the locking groove 13 on the locking ring 8 and the locking block 12 on the cap 11. This replaces manual operation, improves the automation level of container sealing and opening, and avoids the safety hazards caused by manual contact with corrosive liquid-related parts.

[0021] refer to Figure 3 A support block 17 is fixedly connected to the top of the support frame 6. A buffer 18 is fixedly connected to the surface of the support block 17, and the buffer 18 is used in conjunction with the connector 16. A limit post 19 is fixedly connected to the surface of the support block 17, and the limit post 19 is used in conjunction with the connector 16.

[0022] As a technical optimization of this utility model, through the synergistic effect of the support block 17, the buffer 18 and the limiting post 19, the buffer 18 can absorb the impact force generated when the electric push rod 15 drives the connecting piece 16 to move, reduce rigid collisions between components and reduce wear; the limiting post 19 can accurately limit the movement trajectory of the connecting piece 16, prevent it from rotating and misaligning due to force deviation, and ensure the stability of the sealing structure and the service life of the components.

[0023] refer to Figure 2 and Figure 3 The top of the support frame 6 is symmetrically fixed with auxiliary wheels 20, and the auxiliary wheels 20 are rolledly connected to the locking ring 8 to reduce the frictional resistance when the locking ring 8 rotates.

[0024] As a technical optimization of this utility model, the sliding friction between the locking ring 8 and the surrounding structure during rotation is transformed into rolling friction through the rolling cooperation between the auxiliary wheel 20 and the locking ring 8, which greatly reduces the rotational resistance, makes the starting, stopping and rotation of the locking ring 8 smoother, reduces the driving load of the electric push rod 15 and reduces energy consumption; at the same time, it reduces the wear of the locking ring 8, which is especially suitable for its use in environments where it is in contact with corrosive liquids for a long time, and improves the reliability of the equipment.

[0025] refer to Figure 3 The top of the inner liner 3 is provided with an installation groove, and a touch switch 21 is fixedly connected to the top of the installation groove. The touch switch 21 is electrically connected to the flip motor 10.

[0026] As a technical optimization of this utility model, the touch switch 21 is electrically connected to the flip motor 10. When the cover 11 is closed to the preset position of the inner liner 3, the cover 11 triggers the touch switch 21 to automatically cut off the power output of the flip motor 10, thus preventing the motor from running under overload. If the cover 11 does not reach the sealing position, the touch switch 21 remains open, and the motor cannot stop, forming a closed-loop control to ensure that the cover 11 can achieve an effective sealing state every time it is closed, preventing the leakage of corrosive liquid.

[0027] refer to Figure 3 and Figure 4 A limiting block 22 is symmetrically fixedly connected to the top of the cover 11. When the locking ring 8 completes the locking action, the limiting block 22 abuts against the end face of the locking ring 8 to limit its circumferential rotation.

[0028] As a technical optimization of this utility model, through the cooperation of the limiting block 22 and the locking ring 8, after the locking ring 8 completes the locking action on the cover 11, the limiting block 22 can limit the circumferential rotation of the locking ring 8, preventing it from rotating due to external forces such as equipment vibration, transportation bumps or corrosive liquid impact, which would cause the snap-fit ​​groove 13 to separate from the snap-fit ​​block 12, further strengthening the sealing stability between the cover 11 and the guide liner 3, and improving the safety performance of the container under complex working conditions.

[0029] The working principle and usage process of this utility model are as follows: When using this pressure vessel for containing corrosive liquids, first ensure that the container body 1 is placed stably. The initial states of each component are as follows: the locking ring 8 is in the unlocked position; the cover 11 is in the open state under the initial drive of the flipping motor 10; the two electric push rods 15 are in an alternating state, one retracted and one extended, and the connecting piece 16 maintains the corresponding position according to the state of the electric push rod 15; the auxiliary wheel 20 maintains a rolling connection with the locking ring 8 but without additional force; the buffer 18 and the limiting post 19 on the support block 17 are in a standby state without contacting the connecting piece 16; the top of the guide liner 3 is installed... The touch switch 21 in the slot was not triggered; the limiting block 22 on the cover 11 did not form a limiting engagement with the locking ring 8; the sealing ring group 5 in the sealing slot group 4 remained intact and securely engaged; then, corrosive liquid was injected into the feed hopper 2, and the liquid flowed into the container body 1 through the feed hopper 2. The guide liner 3, made of corrosion-resistant material, could prevent the liquid from corroding it and guide the liquid to flow smoothly. After the liquid was injected to the preset amount, the flip motor 10, which was fixedly connected to the hinge 9, was started. The output end of the flip motor 10 drove the cover 11 to flip in the direction of the guide liner 3 through the coupling. When the cover 11 closed to the preset sealing position of the guide liner 3, When the cover 11 triggers the touch switch 21 on the top of the inner liner 3, the touch switch 21 sends a signal to the tilting motor 10, causing the tilting motor 10 to stop running. Then, it controls the two electric push rods 15 hinged to the top fixing block 14 of the support frame 6 to move, causing the electric push rods 15 that were originally in the retracted state to extend and the extended electric push rods 15 to retract. The output end of the electric push rod 15 drives the locking ring 8 to rotate around the inner side of the evenly arranged ring of limiting blocks 7 on the outer side of the feed hopper 2 through the hinged connector 16. During this process, the auxiliary wheel 20 on the top of the support frame 6 maintains a rolling connection with the locking ring 8, preventing the locking ring 8 from rotating. Sliding friction is converted into rolling friction, reducing rotational resistance. At the same time, the connector 16 gradually approaches the support block 17 during movement. The buffer 18 on the support block 17 absorbs the impact force generated by the connector 16, and the limiting post 19 limits the movement trajectory of the connector 16 to prevent it from deviating. When the locking ring 8 rotates to the preset position, the snap-fit ​​groove 13 on the top of the locking ring 8 precisely snaps into the snap-fit ​​blocks 12 that are evenly arranged in a ring on the outer side of the cover 11. At the same time, the limiting block 22 that is symmetrically fixed on the top of the cover 11 forms a limiting fit with the locking ring 8 to prevent the locking ring 8 from rotating. At this time, the container is sealed and can be stored or transported.When it is necessary to remove corrosive liquid from the container, the internal pressure is first released through the pressure relief valve of the container body 1. Then, the two electric push rods 15 are controlled to move in opposite directions, causing the extended electric push rod 15 to retract and the retracted electric push rod 15 to extend. Through the connector 16, the locking ring 8 rotates in the opposite direction, causing the locking groove 13 to separate from the locking block 12. The limiting effect of the limiting block 22 on the locking ring 8 is released. Subsequently, the tilting motor 10 is started, causing the cover 11 to tilt and open. Finally, the internal liquid is removed through the discharge port at the bottom of the container body 1 and the control valve, completing one usage cycle.

[0030] 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 process, method, article, or apparatus.

[0031] 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 pressure vessel for containing a corrosive liquid comprising a vessel body (1) characterised in that: The top of the inlet of the container body (1) is connected to a feed hopper (2). The top of the feed hopper (2) is fixedly connected to a guide liner (3) made of corrosion-resistant material. The top of the guide liner (3) is provided with a sealing groove group (4). A sealing ring group (5) is snapped into the inside of the sealing groove group (4). The top of the feed hopper (2) is fixedly connected to a support frame (6). The outside of the feed hopper (2) is fixedly connected to multiple ring-shaped and uniformly arranged limiting blocks (7). The inner sides of the multiple limiting blocks (7) are rotatably connected to the same locking ring (8), and the locking ring (8) is located in the guide liner (3). On the outside, a hinge (9) is fixedly connected to the top of the support frame (6). A flip motor (10) is fixedly connected to one side of the hinge (9). The output end of the flip motor (10) passes through the hinge (9) and is fixedly connected to a cover (11) through a coupling. The cover (11) is used in conjunction with the guide liner (3). A number of ring-shaped and uniformly arranged snap-fit ​​blocks (12) are fixedly connected to the outside of the cover (11). A number of uniformly arranged snap-fit ​​grooves (13) are opened on the top of the locking ring (8). The multiple snap-fit ​​grooves (13) are used in conjunction with the multiple snap-fit ​​blocks (12).

2. A pressure vessel for containing a corrosive liquid according to claim 1, wherein: The top of the support frame (6) is symmetrically fixed with a fixing block (14), and an electric push rod (15) is hinged to the surface of the fixing block (14). The output end of the electric push rod (15) is hinged with a connector (16), and the other side of the connector (16) is fixedly connected to the locking ring (8) by bolts.

3. A pressure vessel for containing a corrosive liquid according to claim 2, wherein: The top of the support frame (6) is fixedly connected to a support block (17), and a buffer (18) is fixedly connected to the surface of the support block (17). The buffer (18) is used in conjunction with the connector (16). A limit post (19) is fixedly connected to the surface of the support block (17), and the limit post (19) is used in conjunction with the connector (16).

4. A pressure vessel for containing a corrosive liquid as defined in claim 1, wherein: The top of the support frame (6) is symmetrically fixedly connected with auxiliary wheels (20), and the auxiliary wheels (20) are tumblingly connected with the locking ring (8).

5. A pressure vessel for containing a corrosive liquid as defined in claim 1, wherein: The top of the inner liner (3) is provided with an installation groove, and a touch switch (21) is fixedly connected to the top of the installation groove. The touch switch (21) is electrically connected to the flip motor (10).

6. A pressure vessel for containing a corrosive liquid as defined in claim 1, wherein: The top of the cover (11) is symmetrically fixedly connected with a limiting block (22), and the limiting block (22) is used in conjunction with the locking ring (8).

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