A high-cold motor train unit anti-overflow water purifying tank

Abstract

The utility model relates to the field of rail vehicle water supply health system discloses a high cold motor train unit anti -overflow water purifying tank, including the water tank body, the water tank body left side inside fixedly connected with first water inlet, the water tank body right side inside fixedly connected with second water inlet, first water inlet and second water inlet are located water tank body inside one end and are provided with anti -overflow mechanism, the anti -overflow mechanism includes first pivot, first pivot rotation is connected in the outside of first water inlet, in the utility model, through the ball of anti -overflow mechanism with water level uplink linkage link, drives the cover plate to press the sealing ring and realizes automatic plugging, need not additional operation just can block the overflow channel. The pure mechanical linkage design adapts the high cold environment, effectively avoids the problem that the inspection door outside the water injection pipe freezes and cannot inject water, simultaneously puts an end to the problem that the water spills on the sidewalk, solves the design defect of the existing straight pipeline.

Description

Technical Field

[0001] This utility model relates to the field of water supply and sanitation systems for rail vehicles, and in particular to an overflow-proof clean water tank for high-speed trains operating in cold regions. Background Technology

[0002] With the development of rail vehicles, the application of high-speed trains in cold regions is increasing. Existing high-speed trains have a water inlet pipe on each side of the car body. The water inlet pipe is a straight pipe. When water is added to the water tank from any point under the car, the water will overflow from the other side of the water inlet pipe and overflow pipe after the tank is full. When the high-speed train is used for water filling in cold environments, the water overflowing from the water inlet freezes the inspection door outside the water inlet, making it impossible to carry out water filling operations at the next station section, affecting the use of the water tank on the car. In addition, the water overflowing from the water inlet pipe spills onto the sidewalk, causing inconvenience to passers-by and increasing the ground cleaning work. Therefore, an anti-overflow water tank for high-speed trains in cold regions is proposed to solve the above problems. Utility Model Content

[0003] To overcome the above deficiencies, this utility model provides an anti-overflow water tank for high-speed trains in cold regions, which aims to improve the problem that when water is filled from any point under the train, water will flow out from the other side of the water inlet pipe and overflow pipe after the tank is full.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a high-altitude and cold-weather high-speed train anti-overflow water tank, comprising a tank body, a first water inlet fixedly connected to the inside of the left side of the tank body, a second water inlet fixedly connected to the inside of the right side of the tank body, and an anti-backflow mechanism provided at one end of the first water inlet and the second water inlet inside the tank body. The anti-backflow mechanism includes a first rotating shaft, which is rotatably connected to the outside of the first water inlet. A first cover plate is fixedly connected to the outside of the first rotating shaft. A first linkage rod is fixedly connected to both ends of the first rotating shaft. A first float is fixedly connected to the end of the first linkage rod away from the first rotating shaft. A second rotating shaft is rotatably connected to the outside of the second water inlet. A second cover plate is fixedly connected to the outside of the second rotating shaft. A second linkage rod is fixedly connected to both ends of the second rotating shaft. A second float is fixedly connected to the end of the second linkage rod away from the second rotating shaft.

[0005] As a further description of the above technical solution: Both the first and second water inlets are fixedly connected to a sealing ring, which includes a first surface layer and a second surface layer.

[0006] As a further description of the above technical solution: An overflow prevention port is fixedly connected to the rear interior of the water tank body.

[0007] As a further description of the above technical solution: An inspection port is fixedly connected to the top of the water tank body, an emergency drain port is fixedly connected to the outside of the water tank body, and a fixing groove is provided on the outer wall of the water tank body.

[0008] As a further description of the above technical solution: The first surface layer is made of perfluoroelastomer, and the second surface layer is made of nano-silica.

[0009] As a further description of the above technical solution: The first cover plate and the second cover plate abut against the outer wall of the corresponding sealing ring.

[0010] This utility model has the following beneficial effects: 1. In this utility model, the float ball of the anti-overflow mechanism rises with the water level and is linked to the linkage rod, driving the cover plate to press the sealing ring to achieve automatic sealing, blocking the overflow channel without additional operation. This purely mechanical linkage design is suitable for cold environments, effectively avoiding the problem of the inspection door outside the water injection pipe freezing and preventing water injection, while also preventing overflow water from splashing onto the sidewalk, solving the design defects of existing straight-through pipes.

[0011] 2. In this utility model, the anti-overflow mechanism and the anti-overflow port provide dual protection. Combined with the anti-stick sealing function of the double-layer sealing ring, it achieves core anti-overflow through automatic buoyancy sealing, while the emergency anti-overflow port provides a backup in extreme situations. The inspection port and emergency drain port facilitate maintenance and drainage of residual water, preventing components from freezing and jamming, improving long-term reliability, and reducing ground cleaning and equipment maintenance workload. It balances practicality and adaptability to cold environments. Attached Figure Description

[0012] Figure 1 This is a three-dimensional schematic diagram of an anti-overflow water purification tank for high-speed trains in cold regions, as proposed in this utility model. Figure 2 This is a schematic diagram of the inspection port of the anti-overflow clean water tank for high-speed trains in cold regions, as proposed in this utility model. Figure 3 This is a schematic diagram of the first water inlet of an anti-overflow water purification tank for high-speed trains in cold regions, as proposed in this utility model. Figure 4 for Figure 3 Enlarged view of point A in the middle; Figure 5 for Figure 3 Enlarged view of point B in the middle; Figure 6 This is a schematic diagram of the first surface layer of an anti-overflow water purification tank for high-speed trains proposed in this utility model.

[0013] Legend: 1. Water tank body; 11. Inspection port; 12. Emergency drain port; 13. Fixing groove; 21. First water inlet; 22. Second water inlet; 23. Overflow port; 3. Anti-overflow mechanism; 31. First rotating shaft; 32. First cover plate; 33. First linkage rod; 34. First float; 35. Sealing ring; 351. First surface layer; 352. Second surface layer; 36. Second rotating shaft; 37. Second cover plate; 38. Second linkage rod; 39. Second float. Detailed Implementation

[0014] 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.

[0015] Reference Figures 1-2 An embodiment of this utility model is provided: a high-altitude and cold-weather high-speed train anti-overflow water tank, including a water tank body 1, a first water inlet 21 fixedly connected to the inside of the left side of the water tank body 1, a second water inlet 22 fixedly connected to the inside of the right side of the water tank body 1, and an anti-backflow mechanism 3 is provided at one end of the first water inlet 21 and the second water inlet 22 inside the water tank body 1. The water tank body 1 provides an installation carrier and water storage space for the entire anti-overflow system. The first water inlet 21 and the second water inlet 22 correspond to the water injection pipes on both sides of the car body, respectively, to meet the water injection needs of either side and solve the design defect of independent straight-through water injection pipes on both sides of the existing EMU. The anti-backflow mechanism 3, as the core anti-overflow component, acts directly on the inside of the water inlet and can automatically switch between water inlet conduction and water full sealing during the water injection process, blocking the overflow channel from the source and avoiding the problem of water injection on one side and water overflow on the other side in the existing design.

[0016] Reference Figures 2-5 The anti-backflow mechanism 3 includes a first rotating shaft 31, which is rotatably connected to the outside of the first water inlet 21. A first cover plate 32 is fixedly connected to the outside of the first rotating shaft 31. A first linkage rod 33 is fixedly connected to both ends of the first rotating shaft 31. A first float ball 34 is fixedly connected to the end of the first linkage rod 33 away from the first rotating shaft 31. A second rotating shaft 36 is rotatably connected to the outside of the second water inlet 22. A second cover plate 37 is fixedly connected to the outside of the second rotating shaft 36. A second linkage rod 38 is fixedly connected to both ends of the second rotating shaft 36. A second float ball 39 is fixedly connected to the end of the second linkage rod 38 away from the second rotating shaft 36. When water is injected from either inlet, the water flows into the inner side of the water tank body 1 through the injection pipe. The impact force of the water flow directly acts on the cover plate on the corresponding side. This impact force overcomes the initial adhesion force between the cover plate and the sealing ring 35, causing the rotating shaft to rotate along its own axis. This causes the cover plate to gradually detach from the inner sealing surface of the inlet, forming a smooth water inlet channel, allowing the water to flow smoothly into the interior of the water tank body 1. As the water injection process continues, the water level in the water tank body 1 gradually rises. The float ball submerged in the water floats upward under the buoyancy of the water. The buoyancy is converted into a pulling force along the tangential direction of the rotating shaft through the linkage rod, driving the rotating shaft to rotate in the opposite direction, thereby causing the cover plate to move towards the sealing surface of the inlet. The cover slowly moves closer to the water level; when the water level rises to the preset height, the float rises to its limit position, and the buoyancy generated is transmitted to the torque of the rotating shaft through the linkage rod, which reaches its maximum value, causing the cover to tightly press the sealing ring 35 on the outside of the water inlet, thus achieving reliable sealing of the water inlet; at this time, even if the water level in the tank continues to rise slightly, the cover will remain sealed under the continuous action of buoyancy, and there will be no backflow of water from the water inlet. At the same time, due to the linkage design of the float and the linkage rod, automatic sealing can be completed without additional operation, completely solving the problem of water overflowing from the other side of the water inlet when the existing straight pipe is full, and avoiding the hidden danger of overflow freezing the inspection door or spilling onto the sidewalk.

[0017] Reference Figure 1 , Figure 4 Both the first water inlet 21 and the second water inlet 22 are fixedly connected to a sealing ring 35, which includes a first surface layer 351 and a second surface layer 352. The sealing ring 35 is placed between the inlet and the mating surface of the cover plate, and the sealing reliability is improved through the synergistic effect of the double-layer structure. The first surface layer 351 forms the main sealing surface with the cover plate, which enhances the tightness of the fit and blocks the water leakage channel. The second surface layer 352 helps to strengthen the sealing effect, while reducing the frictional resistance between the cover plate and the inlet, ensuring smooth opening and closing of the cover plate and avoiding water overflow caused by the gap of the sealing surface.

[0018] Reference Figures 1-2 An overflow port 23 is fixedly connected to the interior of the rear side of the water tank body 1; The overflow port 23 serves as an emergency overflow protection component, forming a double protection with the anti-backflow mechanism 3. In extreme cases, if the anti-backflow mechanism 3 fails to completely seal, a small amount of overflow water exceeding the rated capacity in the water tank will be discharged through the overflow port 23, preventing the overflow water from flowing back from the inlet to the water injection pipes on both sides of the vehicle body. This prevents the overflow water from freezing the inspection door outside the water injection pipe or spilling onto the sidewalk, solving the problem of direct leakage from the existing overflow pipe and reducing the workload of ground cleaning.

[0019] Reference Figures 1-2 The top of the water tank body 1 is fixedly connected to an inspection port 11, the outside of the water tank body 1 is fixedly connected to an emergency drain port 12, and the outer wall of the water tank body 1 is provided with a fixing groove 13. The inspection port 11 provides a maintenance channel for internal anti-overflow mechanism 3, sealing ring 35 and other components, making it convenient for staff to regularly check the condition of components and clean residual impurities, ensuring the long-term stability of the anti-overflow function; the emergency drain port 12 can quickly drain the residual water in the water tank under special conditions such as long-term shutdown in winter or component maintenance, to prevent the residual water from freezing and damaging internal components or blocking the pipeline; the fixing groove 13 is used to securely mount the water tank body 1 to the EMU car body, ensuring the stability of the position of each component during train operation, avoiding vibration that could cause the anti-overflow mechanism 3 to misalign or fail to seal, and ensuring that the anti-overflow function is not affected by operating conditions.

[0020] Reference Figure 6 The first layer 351 is made of perfluoroelastomer, and the second layer 352 is made of nano-silica. The first layer 351 and the second layer 352 form a complementary double-layer sealing structure. The first layer 351 can provide sufficient sealing pressure to ensure no leakage at the mating surface. The second layer 352 enhances the hydrophobic and anti-stick properties of the sealing surface, reduces the risk of water residue and freezing adhesion, and avoids the sealing surface freezing in low-temperature environments, which can prevent the cover from opening and closing normally. This solves the problem of existing sealing components being prone to freezing and jamming, and ensures the reliability of use in cold environments.

[0021] Reference Figures 1-5 The first cover plate 32 and the second cover plate 37 abut against the outer wall of the corresponding sealing ring 35; The cover plate and the outer wall of the sealing ring 35 are designed to abut against each other, so that when the cover plate is closed, it can form a fully fitted sealing surface with the sealing ring 35, maximizing the sealing contact area and increasing the sealing pressure. When water is injected, the water flow pressure pushes the cover plate away from the sealing ring 35. The rigid fit between the cover plate and the sealing ring 35 blocks the reverse flow of water, avoiding overflow and leakage caused by loose fit. At the same time, it reduces the direct friction between the cover plate and the water inlet, extending the service life of the components.

[0022] Working principle: The water tank body 1 is securely mounted on the train body via a fixing groove 13 on its outer wall. The first water inlet 21 on its left side and the second water inlet 22 on its right side correspond to the water injection pipes on both sides of the train body, satisfying the water injection needs of either side. When water is injected from either inlet, the water flows into the inside of the water tank body 1 through the pipe. The impact force overcomes the initial adhesion between the corresponding side cover and the sealing ring 35, causing the corresponding rotating shaft to rotate along its own axis. This causes the cover to gradually detach from the inner sealing surface of the inlet, forming a smooth water inlet channel. The water flows smoothly into the interior of the water tank body 1. Meanwhile, the linkage rod and the float at the end of the anti-backflow mechanism 3, which are fixedly connected to both ends of the rotating shaft, gradually rise with the water level. The buoyancy is converted into a pulling force along the tangential direction of the rotating shaft through the linkage rod, driving the rotating shaft to rotate in the opposite direction. This, in turn, causes the cover to slowly move towards the sealing surface of the inlet. When the water level rises to the preset height, the float rises to its limit position, and the torque transmitted to the rotating shaft reaches its maximum value, causing the cover to... The plate tightly presses against the sealing ring 35 outside the water inlet. The first surface layer 351 of the sealing ring 35 forms the main sealing surface with the cover plate, and the second surface layer 352 assists in strengthening the seal and reducing friction. The water inlet is reliably sealed by the complete fit between the cover plate and the outer wall of the sealing ring 35. Even if the water level rises slightly, the cover plate remains sealed under the action of buoyancy to prevent backflow. At the same time, the overflow port 23 inside the rear side of the water tank body 1 serves as an emergency guarantee. When the anti-overflow mechanism 3 is not completely sealed, a small amount of overflow water is discharged in a directional manner to prevent overflow water from flowing back from the water inlet to the water injection pipe and to avoid freezing the inspection door or spilling onto the sidewalk. The maintenance port 11 on the top of the water tank body 1 allows staff to regularly check the condition of components such as the anti-overflow mechanism 3 and the sealing ring 35. The external emergency drain port 12 can quickly drain residual water under special working conditions to prevent freezing and damage to components or blockage of pipes. Finally, through the synergistic effect of various components, the overflow problem of the existing straight pipe is completely solved, ensuring the reliability of use in cold environments.

[0023] 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 water tank for preventing overflow in high-altitude and cold-weather high-speed trains, comprising a tank body (1), characterized in that: The water tank body (1) has a first water inlet (21) fixedly connected to the inside of the left side and a second water inlet (22) fixedly connected to the inside of the right side. The first water inlet (21) and the second water inlet (22) are provided with an anti-overflow mechanism (3) at one end inside the water tank body (1). The anti-backflow mechanism (3) includes a first rotating shaft (31), which is rotatably connected to the outside of the first water inlet (21). A first cover plate (32) is fixedly connected to the outside of the first rotating shaft (31). A first linkage rod (33) is fixedly connected to both ends of the first rotating shaft (31). A first float (34) is fixedly connected to the end of the first linkage rod (33) away from the first rotating shaft (31). A second rotating shaft (36) is rotatably connected to the outside of the second water inlet (22). A second cover plate (37) is fixedly connected to the outside of the second rotating shaft (36). A second linkage rod (38) is fixedly connected to both ends of the second rotating shaft (36). A second float (39) is fixedly connected to the end of the second linkage rod (38) away from the second rotating shaft (36).

2. The overflow-proof water purification tank for high-speed trains in cold regions according to claim 1, characterized in that: The first water inlet (21) and the second water inlet (22) are both fixedly connected with sealing rings (35), and the sealing rings (35) include a first surface layer (351) and a second surface layer (352).

3. The overflow-proof water purification tank for high-speed trains in cold regions according to claim 1, characterized in that: An overflow port (23) is fixedly connected to the rear interior of the water tank body (1).

4. The overflow-proof water purification tank for high-speed trains in cold regions according to claim 1, characterized in that: The water tank body (1) has an inspection port (11) fixedly connected to the top, an emergency drain port (12) fixedly connected to the outside of the water tank body (1), and a fixing groove (13) opened on the outer wall of the water tank body (1).

5. The overflow-proof water purification tank for high-speed trains in cold regions according to claim 2, characterized in that: The first surface layer (351) is made of perfluoroelastomer, and the second surface layer (352) is made of nano-silica.

6. The overflow-proof water purification tank for high-speed trains in cold regions according to claim 2, characterized in that: The first cover plate (32) and the second cover plate (37) abut against the outer wall of the corresponding sealing ring (35).

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