Micro-vacuum frost valve for water supply and drainage system of high-speed motor train unit

Abstract

A micro-vacuum frost valve for a water supply and drainage system of a high-speed motor train unit relates to the technical field of drainage valves and comprises a valve body, an inner cavity of the valve body is divided into a left cavity and a right cavity through a partition plate, the left cavity and the right cavity are each provided with two openings communicated with the outside, and the lower opening of the left cavity is sealed through a lower valve cover. Two openings of the right cavity are sealed through an upper valve cover and a sealing plate respectively, a plurality of liquid drainage holes which are formed in a penetrating mode are formed in the top of the partition plate in the circumferential direction, a plurality of liquid inlet holes which are formed in a penetrating mode are formed in the top of the sealing plate in the circumferential direction, and a lifting column and a sliding column which are vertically arranged in a sliding mode are correspondingly arranged in the left cavity and the right cavity and synchronously arranged in a sliding mode. The top of the lifting column is fixedly provided with a plurality of first plugs, and the top of the sliding column is fixedly provided with a plurality of second plugs. The problems that an existing drain valve of the motor train unit is prone to freezing and blocking, and sewage discharge of the motor train unit is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of drainage valve technology, specifically a micro-vacuum antifreeze valve for the water supply and drainage system of a high-speed train. Background Technology

[0002] The high-speed train's water supply and drainage system is a comprehensive system integrating water supply, storage, distribution, wastewater collection, treatment, and discharge. Its main purpose is to provide clean drinking water for passengers and staff on the train and to collect and treat various types of domestic sewage generated during train operation. During operation, the system processes or temporarily stores sewage. When the train arrives at a designated station, staff quickly connect the drain valves in the train's water supply and drainage system to the station's ground-based sewage collection system. This safely and efficiently discharges the stored domestic sewage from the train to ground-based treatment facilities, ensuring train hygiene and compliance with environmental protection requirements.

[0003] The existing drain valves for high-speed trains have gradually revealed their shortcomings during use, mainly in the following aspects: To facilitate quick connection with the station's sewage collection system, the drain valves of the EMU are usually located in an easily accessible position on the outside of the carriage, while the sewage is stored in the collection system inside the carriage. The two are connected by an external pipe. When operating in cold regions, the sewage inside the external pipe is directly exposed to the low temperature environment, which can easily cause the pipe to freeze and become blocked, thus directly affecting the discharge of sewage from the EMU.

[0004] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a micro-vacuum anti-freezing valve for the water supply and drainage system of high-speed trains. This anti-freezing valve is installed in an easily accessible location on the outside of the carriage and is directly connected to the sewage collection system inside the carriage. This not only facilitates rapid connection and efficient discharge with the station's ground-based collection facilities, but also ensures that the valve body is emptied after sewage discharge, preventing sewage from accumulating and filling during operation. At the same time, the micro-vacuum environment maintained inside effectively isolates air and moisture, thereby preventing blockages caused by sewage freezing and internal corrosion caused by oxygen contact.

[0006] To address the above problems, the present invention provides the following technical solution: A micro-vacuum antifreeze valve for a high-speed train's water supply and drainage system includes a valve body. The inner cavity of the valve body is divided into a left chamber and a right chamber by a partition. Both the left and right chambers have two openings communicating with the outside. The lower opening of the left chamber is closed by a lower valve cover, and the two openings of the right chamber are closed by an upper valve cover and a sealing plate, respectively. The top of the partition has several through-holes along the circumference, and the top of the sealing plate has several through-holes along the circumference. The left and right chambers are respectively provided with vertically sliding lifting columns and sliding columns, which slide synchronously. Several first plugs are fixedly provided on the top of the lifting columns, and several second plugs are fixedly provided on the top of the sliding columns.

[0007] As an optimized solution, the valve body is provided with an air extraction valve on its outer wall, and the air extraction valve is connected to the vacuum pump on the EMU.

[0008] As an optimized solution, a rotatable valve stem is provided through the top of the partition, and a first threaded section is provided on the lower outer wall of the valve stem. The first threaded section passes through the lifting column and is threadedly connected to the lifting column.

[0009] As an optimized solution, the top of the valve stem extends upward through the upper valve cover and is rotatably connected to the upper valve cover, and a handle is fixedly fitted onto the top of the valve stem.

[0010] As an optimized solution, a support cylinder is fixedly provided on the top of the lower valve cover, the lifting column is located inside the support cylinder and is slidably connected to the support cylinder, and the valve stem is located inside the support cylinder and its bottom end is rotatably connected to the lower valve cover.

[0011] As an optimized solution, the bottom of the sealing plate is provided with a drive shaft that rotates synchronously with the valve stem. The outer wall of the drive shaft is provided with a second threaded section that passes through the sliding column and is threadedly connected to the sliding column. The bottom end of the drive shaft is rotatably connected to the valve body.

[0012] As an optimized solution, sprockets are fixedly fitted on the outer walls of both the valve stem and the drive shaft, and the two sprockets are connected by a chain.

[0013] As an optimized solution, several support plates are fixedly provided on the inner wall of the right chamber, and the sliding column is slidably connected to the support plates.

[0014] Compared with the prior art, the beneficial effects of the present invention are: Based on the overall design of the antifreeze valve, after installation, the port of the valve body with the sealing plate is connected to the sewage collection system inside the train carriage. The handle and the unsealed opening of the left chamber are located on the outside of the carriage for easy operation. When the train arrives at the designated station, the staff connects the unsealed opening of the left chamber to the station's ground-based collection facilities. By turning the handle, the valve stem and drive shaft rotate synchronously with the cooperation of the sprocket and chain, causing the lifting column and sliding column to slide downwards synchronously. This disengages the first blockage from the drain hole and the second blockage from the inlet hole. Sewage inside the carriage enters the right chamber through the inlet hole, then flows into the left chamber through the drain hole, and finally discharges through the unsealed opening of the left chamber to the station's ground-based collection facilities. After discharge, Rotate the handle in the opposite direction until the lifting column and sliding column are reset, restoring the entire right chamber to a closed state. At this point, there is no residual sewage inside the valve body. Then, the air extraction valve is opened, and the vacuum pump on the EMU evacuates the inside of the right chamber to a micro-vacuum state, effectively preventing internal rust. This anti-freeze valve is installed in an easily accessible position on the outside of the carriage and is directly connected to the sewage collection system inside the carriage. This not only facilitates quick docking and efficient discharge with the station's ground-based collection facilities, but also ensures that the inside of the valve body is emptied after sewage discharge, preventing sewage from accumulating and filling during the journey. At the same time, the micro-vacuum environment maintained inside effectively isolates air and moisture, thus preventing blockages caused by frozen sewage and internal corrosion caused by oxygen contact. Attached Figure Description

[0015] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the partition of the present invention; Figure 3 This is a schematic diagram of the sealing plate of the present invention.

[0017] In the diagram: 1-Valve body; 2-Lifting column; 3-Support cylinder; 4-Lower valve cover; 5-First threaded section; 6-Left chamber; 7-Baffle plate; 8-Chain; 9-Upper valve cover; 10-Handle; 11-Valve stem; 12-Right chamber; 13-Escape valve; 14-Second threaded section; 15-Sealing plate; 16-Sliding column; 17-Support plate; 18-Drive shaft; 19-Sprocket; 20-Drain hole; 21-First plug; 22-Second plug; 23-Inlet hole. Detailed Implementation

[0018] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0019] like Figures 1 to 3 As shown, a micro-vacuum antifreeze valve for the water supply and drainage system of a high-speed train includes a valve body 1. The inner cavity of the valve body 1 is divided into a left chamber 6 and a right chamber 12 by a partition 7. Both the left chamber 6 and the right chamber 12 have two openings that connect to the outside. The lower opening of the left chamber 6 is closed by a lower valve cover 4. The two openings of the right chamber 12 are closed by an upper valve cover 9 and a sealing plate 15, respectively. The top of the partition 7 has several through-holes 20 along the circumference. The top of the sealing plate 15 has several through-holes 23 along the circumference. The left chamber 6 and the right chamber 12 are respectively provided with vertically sliding lifting columns 2 and sliding columns 16. The lifting columns 2 and the sliding columns 16 are slidably arranged. Several first plugs 21 are fixedly provided on the top of the lifting columns 2, and several second plugs 22 are fixedly provided on the top of the sliding columns 16.

[0020] The outer wall of the valve body 1 is equipped with an air extraction valve 13, which is connected to the vacuum pump on the EMU.

[0021] A valve stem 11 with a rotating configuration is provided through the top of the partition plate 7. The lower outer wall of the valve stem 11 is provided with a first threaded section 5, which passes through the lifting column 2 and is threadedly connected to the lifting column 2.

[0022] The top of the valve stem 11 extends upward through the upper valve cover 9 and is rotatably connected to the upper valve cover 9. A handle 10 is fixedly fitted onto the top of the valve stem 11.

[0023] A support cylinder 3 is fixedly provided on the top of the lower valve cover 4. The lifting column 2 is located inside the support cylinder 3 and is slidably connected to the support cylinder 3. The valve stem 11 is located inside the support cylinder 3 and its bottom end is rotatably connected to the lower valve cover 4.

[0024] The bottom of the sealing plate 15 is provided with a drive shaft 18 that rotates synchronously with the valve stem 11. The outer wall of the drive shaft 18 is provided with a second threaded section 14 that passes through the sliding column 16 and is threadedly connected to the sliding column 16. The bottom end of the drive shaft 18 is rotatably connected to the valve body 1.

[0025] Both valve stem 11 and drive shaft 18 are fixedly fitted with sprockets 19, and the two sprockets 19 are connected by a chain 8.

[0026] Several support plates 17 are fixedly provided on the inner wall of the right chamber 12, and the sliding column 16 is slidably connected to the support plates 17.

[0027] The working principle of this device is as follows: Based on the overall design of the antifreeze valve, after installation, the valve body 1 with the sealing plate 15 connects to the sewage collection system inside the train carriage. The handle 10 and the unsealed opening of the left chamber 6 are located on the outside of the carriage in an easily accessible position. When the train arrives at the designated station, the staff connects the unsealed opening of the left chamber 6 to the station's ground-mounted collection facilities. By rotating the handle 10, with the cooperation of the sprocket 19 and the chain 8, the valve stem 11 and the drive shaft 18 rotate synchronously, causing the lifting column 2 and the sliding column 16 to slide downwards synchronously. This causes the first blockage 21 to disengage from the drain hole 20 and the second blockage 22 to disengage from the inlet hole 23. Sewage inside the carriage enters the right chamber 12 through the inlet hole 23, then flows into the left chamber 6 through the drain hole 20, and finally discharges to the station's ground-mounted collection facilities through the unsealed opening of the left chamber 6. After the collection facilities are discharged, the handle 10 is turned in the opposite direction until the lifting column 2 and sliding column 16 are reset, so that the entire right chamber 12 is restored to a closed state. At this time, there is no residual sewage inside the valve body 1. Then the vacuum valve 13 is opened, and the vacuum pump on the EMU evacuates the inside of the right chamber 12 to a micro-vacuum state, thereby effectively preventing internal rust. The anti-freeze valve is installed in an easily accessible position on the outside of the carriage and is directly connected to the sewage collection system inside the carriage. This not only facilitates quick docking and efficient discharge with the station's ground-based collection facilities, but also ensures that the inside of the valve body 1 is emptied after sewage discharge, preventing sewage from accumulating and filling during the journey. At the same time, the micro-vacuum environment maintained inside effectively isolates air and moisture, thereby preventing blockage caused by sewage freezing and internal corrosion caused by oxygen contact.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A micro-vacuum antifreeze valve for the water supply and drainage system of a high-speed train, characterized in that: The valve body (1) is divided into a left chamber (6) and a right chamber (12) by a partition (7). Both the left chamber (6) and the right chamber (12) have two openings that connect to the outside. The lower opening of the left chamber (6) is closed by a lower valve cover (4). The two openings of the right chamber (12) are closed by an upper valve cover (9) and a sealing plate (15), respectively. The top of the partition (7) has several through-holes (20) along the circumferential direction. The top of the sealing plate (15) has several through-holes (23) along the circumferential direction. The left chamber (6) and the right chamber (12) are respectively provided with vertically sliding lifting columns (2) and sliding columns (16). The lifting columns (2) and sliding columns (16) slide synchronously. The top of the lifting column (2) is fixed with several first plugs (21), and the top of the sliding column (16) is fixed with several second plugs (22).

2. The micro-vacuum antifreeze valve for the water supply and drainage system of a high-speed train according to claim 1, characterized in that: The valve body (1) is provided with an air extraction valve (13) on its outer wall, and the air extraction valve (13) is connected to the vacuum pump on the EMU.

3. The micro-vacuum antifreeze valve for the water supply and drainage system of a high-speed train according to claim 1, characterized in that: The top of the partition (7) is provided with a rotating valve stem (11), and the lower outer wall of the valve stem (11) is provided with a first threaded section (5), which passes through the lifting column (2) and is threadedly connected to the lifting column (2).

4. A micro-vacuum antifreeze valve for a high-speed train water supply and drainage system according to claim 3, characterized in that: The top of the valve stem (11) extends upward through the upper valve cover (9) and is rotatably connected to the upper valve cover (9). A handle (10) is fixedly fitted onto the top of the valve stem (11).

5. A micro-vacuum antifreeze valve for a high-speed train's water supply and drainage system according to claim 3, characterized in that: The lower valve cover (4) is fixedly provided with a support cylinder (3) at the top. The lifting column (2) is located inside the support cylinder (3) and is slidably connected to the support cylinder (3). The valve stem (11) is located inside the support cylinder (3) and its bottom end is rotatably connected to the lower valve cover (4).

6. A micro-vacuum antifreeze valve for a high-speed train water supply and drainage system according to claim 3, characterized in that: The sealing plate (15) is provided with a drive shaft (18) at the bottom. The drive shaft (18) is rotated synchronously with the valve stem (11). The outer wall of the drive shaft (18) is provided with a second threaded section (14). The second threaded section (14) passes through the sliding column (16) and is threadedly connected to the sliding column (16). The bottom end of the drive shaft (18) is rotatably connected to the valve body (1).

7. A micro-vacuum antifreeze valve for a high-speed train's water supply and drainage system according to claim 6, characterized in that: Both the valve stem (11) and the drive shaft (18) are fixedly fitted with sprockets (19), and the two sprockets (19) are connected by a chain (8).

8. A micro-vacuum antifreeze valve for a high-speed train water supply and drainage system according to claim 1, characterized in that: The upper inner wall of the right chamber (12) is fixedly provided with several support plates (17), and the sliding column (16) is slidably connected to the support plates (17).

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