Liquid inlet of aqueous ammonia storage tank for reducing volatilization of aqueous ammonia
By designing a multi-seal structure at the inlet of the ammonia storage tank, the problem of severe ammonia evaporation is solved, significantly reducing evaporation loss and improving the safety of the operating environment. It is applicable to fields such as chemical production, environmental protection, and agricultural fertilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ANHUI YINGSHEN ENVIRONMENTAL PROTECTION TECHNOLOGY CO LTD
- Filing Date
- 2025-09-23
- Publication Date
- 2026-07-21
AI Technical Summary
Traditional ammonia storage tanks have simple inlet structures, which leads to severe evaporation of ammonia during the inlet process, especially in high-temperature environments or when the inlet rate is fast. There is a lack of effective sealing and evaporation suppression measures.
It adopts a multi-seal structure, including a sealing cover, mounting plate, first sealing gasket, valve stem, valve core, second sealing ring, etc., to form a double end face seal and enhanced sealing performance when the valve is closed. Combined with threaded fit and sealing ring design, it blocks the volatilization path.
It significantly reduces ammonia evaporation loss, improves the safety of the operating environment, and has both energy-saving and environmental benefits. It is suitable for various storage scenarios that require strict control of ammonia evaporation.
Smart Images

Figure CN224529544U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of chemical equipment technology, specifically to an ammonia storage tank inlet that reduces ammonia evaporation. Background Technology
[0002] Ammonia is widely used as a common chemical raw material or reagent in many fields such as chemical production, environmental protection, and agricultural fertilization. Ammonia storage tanks are key equipment for storing ammonia. When replenishing ammonia in the storage tank, the inlet is the necessary channel for ammonia to enter the tank.
[0003] Traditional ammonia storage tank inlet structures are relatively simple. During the filling process, the contact area between air and ammonia is large and the contact time is long, and there is a lack of effective sealing and anti-evaporation measures, resulting in a large amount of ammonia evaporation. The evaporation problem is particularly serious in high-temperature environments or at high filling rates. Therefore, those skilled in the art have provided ammonia storage tank inlet design to reduce ammonia evaporation and solve the problems mentioned in the background art. Utility Model Content
[0004] The purpose of this invention is to provide an inlet for an ammonia storage tank that reduces ammonia evaporation, thereby solving the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An ammonia storage tank inlet for reducing ammonia evaporation includes an ammonia storage tank inlet pipe and a sealing cap. An installation plate is connected to the outer surface of the ammonia storage tank inlet pipe, and a first sealing gasket is installed on the left side of the installation plate. A connecting pipe is connected to the outer surface of the ammonia storage tank inlet pipe, and a valve stem is provided inside the connecting pipe. One end of the valve stem is connected to a valve core.
[0007] As a further improvement of this utility model: the inner wall of the sealing cover is connected to a second sealing gasket, and the outer surface of the sealing cover is connected to a ring-shaped arrangement of handles.
[0008] As a further improvement of this utility model: the inner wall of the sealing cap is provided with an internal thread, and the outer surface of the ammonia water storage tank inlet pipe is provided with a connecting thread, which is compatible with the internal thread.
[0009] As a further improvement of this utility model: the left side of the mounting plate is provided with a ring of mounting holes, and each mounting hole is provided with a mounting screw.
[0010] As a further embodiment of this utility model: a circular plate is connected to the outer surface of the valve stem, and a ring-shaped arrangement of handles is connected to the outer surface of the circular plate.
[0011] As a further improvement of this utility model: the inner wall of the connecting pipe is connected to a first sealing ring, and the inner wall of the first sealing ring is in contact with the valve stem.
[0012] As a further improvement of this utility model: a second sealing ring is connected to the outer surface of the valve core, and the outer surface of the second sealing ring is in contact with the inlet pipe of the ammonia storage tank.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] The ammonia storage tank inlet, designed to reduce ammonia evaporation, significantly minimizes ammonia loss through a multi-layered sealing structure. The threaded fit between the sealing cap and the inlet pipe, along with the second sealing gasket and the first sealing gasket on the mounting plate, forms a double-face seal, blocking the evaporation path. The second sealing ring outside the valve core and the first sealing ring inside the connecting pipe enhance the sealing performance when the valve is closed, reducing evaporation through liquid flow gaps. Simultaneously, the convenient handle and grip design ensures operational flexibility while preventing increased evaporation due to loose seals. Attached Figure Description
[0015] Figure 1 A three-dimensional structural diagram of the inlet of an ammonia storage tank designed to reduce ammonia evaporation;
[0016] Figure 2 A three-dimensional structural schematic diagram of the side view of the inlet of an ammonia storage tank designed to reduce ammonia evaporation.
[0017] Figure 3 A top view of the three-dimensional structure of the inlet of the ammonia storage tank to reduce ammonia evaporation;
[0018] Figure 4 A top sectional view of the inlet of an ammonia storage tank designed to reduce ammonia evaporation;
[0019] Figure 5 A cross-sectional view of the inlet of an ammonia storage tank designed to reduce ammonia evaporation.
[0020] In the diagram: 1. Ammonia storage tank inlet pipe; 2. Mounting plate; 3. First sealing gasket; 4. Connecting pipe; 5. Valve stem; 6. Valve core; 7. Sealing cap; 8. Connecting thread; 9. Internal thread; 10. Second sealing gasket; 11. Handle; 12. Mounting hole; 13. Mounting screw; 14. Round plate; 15. Handle; 16. First sealing ring; 17. Second sealing ring. Detailed Implementation
[0021] Please see Figures 1-5In this embodiment of the utility model, the ammonia storage tank inlet for reducing ammonia evaporation includes an ammonia storage tank inlet pipe 1 and a sealing cap 7. An installation plate 2 is connected to the outer surface of the ammonia storage tank inlet pipe 1, and a first sealing gasket 3 is installed on the left side of the installation plate 2. A connecting pipe 4 is connected to the outer surface of the ammonia storage tank inlet pipe 1, and a valve stem 5 is provided inside the connecting pipe 4. One end of the valve stem 5 is connected to a valve core 6. The overall structure effectively reduces ammonia waste, reduces the emission of irritating gases, improves the safety of the operating environment, and has both energy-saving and environmental protection benefits. It is suitable for various storage scenarios that require strict control of ammonia evaporation.
[0022] The inner wall of the sealing cover 7 is connected to a second sealing gasket 10, and the outer surface of the sealing cover 7 is connected to a ring-shaped handle 11. The inner wall of the sealing cover 7 is provided with an internal thread 9, and the outer surface of the ammonia storage tank inlet pipe 1 is provided with a connecting thread 8, which is compatible with the internal thread 9. The left side of the mounting plate 2 is provided with a ring-shaped mounting hole 12, and each mounting hole 12 is provided with a mounting screw 13. This not only improves the sealing effect of the equipment, but also makes it easier for people to install the equipment.
[0023] A circular plate 14 is connected to the outer surface of the valve stem 5, and a ring-shaped handle 15 is connected to the outer surface of the circular plate 14. A first sealing ring 16 is connected to the inner wall of the connecting pipe 4, and the inner wall of the first sealing ring 16 is in contact with the valve stem 5. A second sealing ring 17 is connected to the outer surface of the valve core 6, and the outer surface of the second sealing ring 17 is in contact with the inlet pipe 1 of the ammonia storage tank, which can form a double end face seal to block the evaporation path.
[0024] The working principle of this utility model is as follows: First, people can use the mounting holes 12 and mounting screws 13 of the mounting plate 2 to connect the inlet pipe 1 of the ammonia storage tank to the ammonia storage tank, and the first sealing gasket 3 is compressed to form an initial seal.
[0025] When liquid is introduced, the handle 15 of the circular plate 14 can be turned to drive the valve stem 5, causing the valve core 6 to disengage from the closed state. The second sealing ring 17 separates from the liquid inlet pipe 1, and the amine liquid flows in through the connecting pipe 4. The first sealing ring 16 is tightly attached to the valve stem 5 to prevent leakage at the valve stem 5.
[0026] After the liquid inlet stops, turn the handle 15 in the opposite direction to reset the valve core 6. The second sealing ring 17 fits tightly against the inner wall of the liquid inlet pipe 1 to form a primary seal. Then, tighten the sealing cap 7 by turning the handle 11. The connecting thread 8 engages with the internal thread 9, and the second sealing gasket 10 is deformed under pressure to form a secondary seal.
[0027] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An ammonia storage tank inlet for reducing ammonia evaporation, characterized in that, It includes an ammonia storage tank inlet pipe (1) and a sealing cap (7). The outer surface of the ammonia storage tank inlet pipe (1) is connected to an mounting plate (2). A first sealing gasket (3) is installed on the left side of the mounting plate (2). The outer surface of the ammonia storage tank inlet pipe (1) is connected to a connecting pipe (4). A valve stem (5) is provided inside the connecting pipe (4). One end of the valve stem (5) is connected to a valve core (6).
2. The ammonia storage tank inlet for reducing ammonia evaporation according to claim 1, characterized in that, The inner wall of the sealing cover (7) is connected to a second sealing gasket (10), and the outer surface of the sealing cover (7) is connected to a ring-shaped arrangement of handles (11).
3. The ammonia storage tank inlet for reducing ammonia evaporation according to claim 1, characterized in that, The inner wall of the sealing cap (7) is provided with an internal thread (9), and the outer surface of the ammonia storage tank inlet pipe (1) is provided with a connecting thread (8), which is compatible with the internal thread (9).
4. The ammonia storage tank inlet for reducing ammonia evaporation according to claim 1, characterized in that, The mounting plate (2) has a ring of mounting holes (12) arranged on its left side, and each mounting hole (12) is provided with a mounting screw (13).
5. The ammonia storage tank inlet for reducing ammonia evaporation according to claim 1, characterized in that, The outer surface of the valve stem (5) is connected to a circular plate (14), and the outer surface of the circular plate (14) is connected to a ring-shaped arrangement of handles (15).
6. The ammonia storage tank inlet for reducing ammonia evaporation according to claim 1, characterized in that, The inner wall of the connecting pipe (4) is connected to a first sealing ring (16), and the inner wall of the first sealing ring (16) is in contact with the valve stem (5).
7. The ammonia storage tank inlet for reducing ammonia evaporation according to claim 1, characterized in that, The outer surface of the valve core (6) is connected to a second sealing ring (17), and the outer surface of the second sealing ring (17) is in contact with the inlet pipe (1) of the ammonia storage tank.